Updated on 2024/11/18

Information

 

写真a

 
OKAYASU TAKASHI
 
Organization
Faculty of Agriculture Department of Agro-environmental Sciences Professor
Plant Frontier Research Center (Concurrent)
System LSI Research Center (Concurrent)
Joint Graduate School of Mathematics for Innovation (Concurrent)
School of Agriculture Department of Bioresource and Bioenvironment(Concurrent)
Graduate School of Bioresource and Bioenvironmental Sciences Department of Agro-environmental Sciences(Concurrent)
Title
Professor
Contact information
メールアドレス
Profile
1. DEVELOPMENT OF SOIL TILLAGE SIMULATOR USING FEM-DEM QUASI-COUPLING METHOD Soil tillage simulator was developed by the FEM (Finite Element Method) - DEM (Discrete Element Method) quasi-coupling method. By using this simulator, not only the prediction of the soil dynamics such as soil cutting, crushing, reversing, and throwing and the soil reaction forces acting on the tillage tool but also the evaluation of stress and strain distribution in the tillage tool during the soil tillage operation are carried out. We are also trying to improve the accuracy in the development of proper constitutive models for describing the mechanical behavior of soils and metals, and the accurate modeling of tillage tools using 3D scanner and CAD. 2. DEVELOPMENT OF INFORMATIZATION AGRICULTURAL SUPPORTING SYSTEM AND EVALUATION OF ITS VALIDITY The informatization agricultural supporting system called the “Agri-eye” is developed to optimize the agricultural production system. This system is composed of the field environmental monitoring and acquisition, the crop growth diagnosis and quality evaluation, the work history recording, the data analysis and visualization, the communication tools, and so on. Currently more than 50 devices have been already installed into more than 10 real fields mainly distributed in Fukuoka and Oita prefectures. The validity of the systems has been verified by the feasibility studies up to present. 3. UTILIZATION OF ICT IN TROPICAL AGRICULTURE Environmental information is important factor affecting the agricultural production system. In four season countries including Japan, a weather condition during cultivations will be controlled by using a greenhouse and environmental control facilities. However, in tropical countries like Indonesia and Bangladesh, a utilization of the automatic environmental control system is still rare because of the operational costs and the economic reasons. Thus, we try to utilize the Information and Communication Technology (ICT) in order to improve the agricultural production system in the tropical agriculture. In this study, the simple field monitoring systems have been developed and installed into the real tropical fields in Indonesia and Bangladesh. These information measured are utilized to establish the real-time environmental evaluation and the decision support on the farm operations.
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Research Areas

  • Environmental Science/Agriculture Science / Agricultural environmental engineering and agricultural information engineering

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Geotechnical engineering

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Civil engineering material, execution and construction management

Degree

  • Ph.D.

Education

  • Kyushu University   農学研究科   農業工学

    - 1999

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    Country:Japan

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  • Kyushu University   Graduate School, Division of Agriculture  

    - 1999

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Research Interests・Research Keywords

  • Research theme: 農業機械

    Keyword: 農業機械

    Research period: 2024

  • Research theme: Agroinformatics

    Keyword: Agroinformatics

    Research period: 2024

  • Research theme: Computational Mechanics

    Keyword: Computational Mechanics

    Research period: 2024

  • Research theme: 地盤工学

    Keyword: 地盤工学

    Research period: 2024

  • Research theme: geotechnical engineering

    Keyword: geotechnical engineering

    Research period: 2024

  • Research theme: Agricultural machinery

    Keyword: Agricultural machinery

    Research period: 2024

  • Research theme: Development of Low Cost Farming Support Robot and Verification of Its Validity

    Keyword: small and low-cost robots

    Research period: 2019.4

  • Research theme: Study on Measurement, Extraction, and Visualization of Plant Phenotype Using Computer Vision

    Keyword: Measurement, Extraction, and Visualization of Plant Phenotype, Computer Vision

    Research period: 2018.4

  • Research theme: Development of High-throughput Plant Phenotyping System

    Keyword: Plant Phenotyping, Plant Body Sensing, High Throughput Processing, Image Processing and Analysis, IoT

    Research period: 2014.4

  • Research theme: Study on numerical analyses of mechanical behavior in soils-machine system

    Keyword: Soils, Inelastic behavior, Discrete Element Method (DEM), Finite Element Analysis (FEM)

    Research period: 2008.6

  • Research theme: Study on Smart Agriculture

    Keyword: Smart Agricultre, Precision Agriculture, ICT, IoT, Field Monitoring System, GIS, Hyperspectral Imaging, Open software, Virtual and Augmented Reality

    Research period: 2005.6

  • Research theme: Study on numerical analyses of mechanical behavior in crop-machine system

    Keyword: Crop, Biomechanics, Inelastic behavior, Discrete Element Method (DEM), Finite Element Analysis (FEM)

    Research period: 2005.6

  • Research theme: Study on analysis of soil defomation behavior by elastoplastic FEM

    Keyword: Subloading surface model, Elastoplastic finite element method, Cyclic loading, Soil compaction, Optimal design

    Research period: 2002.9

  • Research theme: Study on experimental and theoretical analyses for frictional phenomena between structures

    Keyword: Frictional phenomenon, Subloading surface concept, Sliding, Cyclic friction

    Research period: 2002.4 - 2008.3

  • Research theme: Study on elastoplastic constitutive equation of materials

    Keyword: Elastoplastic, Rate (time)-dependency, Creep, Stress relaxation, Subloading surface model, Structure

    Research period: 2002.1

  • Research theme: Development of soil displacement measurement system based on PIV

    Keyword: PIV (Particle Image Velocimetry), Soil deformation, Soil compaction, Wheel, Online measurement system

    Research period: 2002.1

  • Research theme: Study on traveling performance of off-road vehicle and soil deformation

    Keyword: Drawbar pull, Traveling resistance, Trafficability, Tractive performance

    Research period: 1996.4

Awards

  • 2022年度農業情報学会フェロー

    2022.5   農業情報学会   農業・農村の情報化に関する永年の貢献

  • 2021年度農業情報学会功績賞

    2021.5   農業情報学会   圃場環境・植物生育情報計測技術の開発普及および学会運営への功績

  • 2019年度農業情報学会特別貢献賞

    2019.5   農業情報学会   30周年記念事業(出版)に関する特別な貢献

  • 2019年度農業情報学会学術普及賞

    2019.5   農業情報学会   圃場環境計測・制御IoTシステムの研究開発および実用化

  • ベストポスター賞

    2017.11   AFELiSA2017  

  • 農業情報学会学術奨励賞

    2014.5   農業情報学会   圃場環境情報の連続計測と収集した情報の特徴量抽出に関する研究

  • ベストポスター賞

    2007.9   農業環境工学関連学会合同大会  

  • 農業機械学会研究奨励賞

    2004.9   農業機械学会   「圃場機械走行による地盤変形・転圧現象の高精度予測に関する基礎研究」 圃場機械の乗用・大型化,持続型農業や精密農業の推進により,機械作業に伴う土壌転圧問題が深刻化し,現下,その具体的解決へ向けた研究が国内外で盛んに行われている.このような情勢の中,圃場機械には,優れた走行性能に加えて転圧を軽減し得る新たな走行部の設計・開発が求められている.その実現には,圃場機械走行部と土壌との力学的相互作用を詳細に把握する必要があるが,既往の研究は,経験的手法が主流で,圃場走行・転圧現象を合理的に予測し得るには至っていない.斯様な状況の下,本研究は近年発展の著しいコンピュータ技術,画像処理技術,数値解析技術を活用して,車輪走行に伴う地盤の変形・転圧現象の高精度オンライン計測システム,さらには弾塑性有限要素解析プログラムを開発し,実験・理論両面から本問題解明に取り組んだものである.

  • The International Society for Terrain-Vehicle Systems 7th Asia-Pacific Conference・Best Session Paper Award

    2004.1   ISTVS (Asia Pacific)  

  • 農業機械学会九州支部例会・ポスター賞受賞

    2000.9   農業機械学会九州支部  

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Papers

  • Enhancing Image Quality Assessment for Plant Phenotyping Robots Reviewed

    Pham D.T., Okayasu, T., Yasutake, D., Hirai, Y., Ozaki, T., Koga, M., Hidaka, K., Nomura, K., Vo, H.B.

    農業情報研究   33 ( 2 )   2024.7

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  • 小型UAVのための画像情報に基づく自己位置推定と3次元点群地図作成技術の精度評価 Reviewed

    田中 颯,岡安崇史*,Awal, S. M. S.,伊藤次郎,井上英二,平井康丸,光岡宗司

    九州農業食糧工学会誌   71   2021.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • フォトグラメトリー法に基づく植物3次元形状の計測とその精度評価 Reviewed

    兒玉拓也,岡安崇史*,井上英二,平井康丸,光岡宗司

    九州農業食糧工学会誌   71   2021.12

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  • Accuracy evaluation of mapping and self-localization for small robot navigation using ROS Reviewed

    Awal, S. M. S., Okayasu, T.*, Inoue, E., Hirai, Y.

    九州農業食糧工学会誌   71   2021.12

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  • Development of a plant phenotyping platform using low-cost IoT devices and its performance evaluation Reviewed International journal

    Ito, J., Okayasu, T., Nomura, K., Yasutake, D., Iwao, T., Ozaki, Y., Inoue, E., Hirai, Y., Mitsuoka, M.

    Proceedings of the Forum "Math-for-Industry" 2019   2021.9

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  • Water usage monitoring system for plants based on a weight sensor and imagery motion analysis Reviewed International journal

    Hamidah, A., Okayasu, T., Hoshino, Y., Inoue, E., Hirai, Y., Mitsuoka, M., Nugroho, A/P., Sutiarso, L.

    Proceedings of the Forum "Math-for-Industry" 2019   2021.9

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  • 低コストIoTデバイスを用いた植物フェノタイピングロボットの開発とその性能評価 Reviewed

    伊藤次郎,岡安崇史,野村浩一,安武大輔,岩尾忠重,尾崎行生,井上英二,平井康丸,光岡宗司

    農業情報研究   2021.7

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  • Development of plant phenotyping platform using affordable devices and sensors Reviewed International journal

    T. Okayasu, D. Arita, T. Yoshinaga, A. Shimada, R. Taniguchi, E. Inoue, Y. Hirai, and M. Mitsuoka

    Proc. AFITA/WCCA2018   2018.10

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  • Development of Plant Motion Monitoring System to Study The Circadian Rhythms Based on Leaf Motion Implementing the Optical Flow Method Reviewed International journal

    Nugroho A.P., Sutiarso, L., Masithoh, R.E., Okayasu, T.

    Proceedings of the 9th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)   2018.5

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  • Early Disease Detection of Bacterial Leaf Blight on Rice Plant by using Hyperspectral Imaging Reviewed International journal

    Ibrahim, M.N.R., Okayasu, T., Yoshimura, A., Yamagata, Y., Furuya, N, Inoue, E., Hirai, Y., Mitsuoka, M.

    Proceedings of the 9th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)   2018.5

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  • Development of Monorail-type Mobile Robot for Field Environment and Plant Status Monitoring Reviewed International journal

    Okayasu, T., Arita, D., Yoshinaga, T., Taniguchi, R., Inoue, E., Hirai, Y., Mitsuoka, M.

    Proceedings of the 9th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)   2018.5

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  • Affordable Field Environmental Monitoring and Plant Growth Measurement System for Smart Agriculture Reviewed International journal

    Okayasu, T., Nugroho, A.P., Sakai, A., Arita, D., Yoshinaga, T., Taniguchi, R., Horimoto, M., Inoue, E., Hirai, Y., Mitsuoka, M.

    11th International Conference on Sensing Technology (ICST)   2017.12

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    DOI: 10.1109/ICSensT.2017.8304486

  • 温室環境計測機器のための低コスト相対湿度センサの耐候性評価

    星 岳彦,越智眞之助,松山智紀,安場健一郎,黒崎秀仁,岡安崇史

    農業情報研究   2016.10

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  • Development of a field environmental monitoring node with over the air update function

    Andri Prima Nugroho, Takashi Okayasu, Masafumi Horimoto, Daisaku Arita, Takehiko Hoshi, Hidehito Kurosaki, Ken-ichiro Yasuba, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka and Lilik Sutiarso

    農業情報研究   2016.10

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  • Water leakage control by using vibratory roller on a dry-seeded rice field in southwestern Japan International journal

    Koichiro Fukami, Toshifumi Mukunoki, Keiko Nakano, Naoki Matsuo, Takashi Okayasu

    Soil and Tillage Research   2016.9

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  • Quantification of 2D Lateral Leaf Motion on Mature Plants Foliage using Optical Flow to Study the Circadian Rhythms International journal

    Andri Prima Nugroho, Takashi Okayasu, Rin-ichiro Taniguchi, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka and Lilik Sutiarso

    Proceesings of the 2nd International Symposium on Agricultural and Biosystem Engineering   2016.8

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  • Development of a remote environmental monitoring and control framework for tropical horticulture and verification of its validity under unstable network connection in rural area Reviewed International journal

    Andri, P. N., Okayasu, T., Hoshi, T., Inoue, E., Hirai, Y., Mitsuoka, aM., Lilik, S.

    Computers and Electronics in Agriculture   2016.6

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    DOI: 10.1016/j.compag.2016.04.025

  • Measurement and Visualization of Farm Work Information International journal

    Hashimoto, Y., Arita, D., Shimada, A., Yoshinaga, T., Okayasu, T., Uchiyama, H., Taniguchi, R.

    Proc. CIGR-AgEng conference 2016   2016.6

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  • Sutiarso:Development of a remote environmental monitoring and control framework for tropical horticulture and verification of its validity under unstable network connection in rural area International journal

    Andri Prima Nugroho, Takashi Okayasu, Takehiko Hoshi, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka, and Lilik

    Computers and Electronics in Agriculture   2016.6

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  • Plant growth evaluation for leaf vegetables using simple field monitoring system International journal

    Okayasu, T., Tanaka, D., Sakai, A., Sakai, Y., Shimada, K., Awai, K., Inoue, E., Hirai, Y., Mitsuoka, M.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Farmer position estimation in a tomato plant green house with smart devices International journal

    Hashimoto, Y., Arita, D., Shimda, A., Okayasu, T., Uchiyama, H., Taniguchi, R.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Effective investigation of 3D feature value extraction for plant body surface using rgb-d sensor International journal

    Sakai, A., Okayasu, T., Yoshinaga, T., Nugroho, A. P., Arita, D., Inoue, E., Hirai, Y., Mitsuoka, M.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Automatic leaf motion analysis using optical flow to diagnose plant behavior in response to environmental changes International journal

    Nugroho, A. P., Okayasu, T., Sakai, A., Inoue, E., Hirai, Y., Mitsuoka, M., Sutiarso, L.

    roceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • 低コスト環境制御システム構築のためのプログラムライブラリの開発

    安場 健一郎, 多根 知周, 田中 義行, 後藤 丹十郎, 吉田 裕一, 黒崎 秀仁, 岡安 崇史, 星 岳彦

    農業情報研究   2016.4

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  • Arduinoで構成したユビキタス環境制御システム対応ノードのパケット処理能力

    黒崎 秀仁, 安場 健一郎, 岡安 崇史, 星 岳彦

    農業情報研究   2016.4

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  • RGB-Dセンサを用いた植物体情報の計測とその精度評価 Reviewed

    境 淳成,岡安崇史,吉永 崇,有田大作,三好悠太,北野雅治, 井上英二,平井康丸,光岡宗司

    農業食料工学会九州支部誌   2015.8

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  • 農作業履歴収集の電子化とその利活用技術の開発

    田中大介,岡安崇史,永尾宏臣,坂井佑輔,粟井一勝,井上英二,平井康丸,光岡宗司

    九州大学大学院農学研究院学芸雑誌   2015.2

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  • Elastoplastic deformation behavior for ballast under monotonic and cyclic loading conditions International journal

    Takashi Okayasu, Takahisa Nakamura, Katsumi Muramoto, Yoshitsugu Momoya

    Proceedings of International Conference on International Society for Terrain-Vehicle Systems   2014.9

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  • Deployment of agricultural information system – installation and utilization of field monitoring system on agricultural production in Yogyakarta, Indonesia International journal

    Andri Prima Nugroho, Takashi Okayasu, Sribudi Astuti, Muneshi Mitsuoka, Eiji Inoue, Yasumaru Hirai, Lilik Sutiarso

    Proceesings of The International Conference on Sustainable Innovation (ICOSI) 2013   2014.6

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    DOI: 10.13140/2.1.1643.8401

  • Development of soil tillage simulator using fem-dem quasi-coupling method International journal

    Takashi Okayasu, Toshihisa Fukuda, Keita Tsuchiya, Koichiro Fukami, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014   2014.5

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  • Effectiveness evaluation on utilization of two snss in japan agriculture International journal

    Takashi Okayasu, Daisaku Arita, Andri Prima Nugroho, Takehiko Hoshi, Takashi Yoshinaga, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014   2014.5

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  • バングラデシュにおけるICTを用いた農業情報支援による貧困層農家の所得向上 Reviewed

    尾﨑彰則・緒方一夫・アシル アハメッド・宮島郁夫・岡安崇史・大杉卓三・田中祥子

    農学国際協力   2014.4

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  • 放牧による耕作放棄地解消がイノシシの行動に及ぼす影響 Reviewed

    丸居篤・藤堂乃夫宏・岡安崇史・後藤貴文・衛藤哲次・塩塚雄二・高橋秀之

    日本暖地畜産学会報   2014.4

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  • 変化点分析法を用いた圃場環境情報の特徴量抽出とその妥当性の検証 Reviewed

    岡安 崇史, Andri Prima Nugroho, 尾﨑 彰則, 光岡 宗司, 南石 晃明, 井上 英二, 平井 康丸

    農業情報研究   2013.10

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    圃場に設置された簡易モニタリング装置を用いて計測・収集される環境データは,作物の生育状況,病害虫の発生等の把握・予測のみならず,播種・移植,潅水,施肥,防除,収穫等の種々の農作業の最適化のための重要な情報となる.しかしながら,モニタリング装置の設置台数,さらには各装置に接続されたセンサー数の増加に伴い,データベースに保管されるた計測データは急速に増大していくすることが予想される.このため,これら膨大なデータの中から農業生産に必要なデータを効率的かつ迅速に抽出するための技術の開発が求められるている.本稿では,まず,圃場環境の常時監視,農業生産工程の最適化,農家間での生産情報の共有等を目的に著者らが開発を行ったハウス内環境の簡易モニタリングシステムについて概説する.次に,特異スペクトル変換と称される時系列データ解析手法に基づく特徴量抽出プログラムを開発し,同モニタリングシステムで計測されたハウス内環境情報の変化点の抽出,さらには,抽出した変化点情報と農作業履歴データとの比較・照査を行い,本解析手法ならびに自動検出された変化点情報の妥当性について検討を行った.

  • Environmental Change Point Analysis and Its Application to Agriculture International journal

    Takashi OKAYASU, Andri Prima Nugroho, Daisaku Arita, Akinori Ozaki, Mitsuoka Muneshi, Teruaki NANSEKI, Eiji Inoue, Hirai Yasumaru

    Proceedings of International conference on Instrumentation, Control, Information Technology and System Integration   2013.9

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    Field environmental information such as air temperature, humidity, and solar radiation would be important not only for evaluation of crop growth progress, status and quality or the occurrence of pests and diseases, but also for optimization of agricultural production processes such as plating, irrigation, fertilization, pest control, and harvesting. However, measured data stored in an agricultural information database, would be vast data with the increase in the number of monitoring devices and sensors installed in such devices. Thus, in order to extract feature values from such vast data, it is necessary to develop some numerical technologies and methods. In this study, the change point analysis based on Singular Spectrum Transformation (SST) was applied for extracting the difference of cultivation environmental conditions in each the tomato greenhouse. The change point scores were detected from the change of CO2 concentration data clearly. They agreed well with the farm work history recorded by a corporative farmer.

  • Development of Web-based Change Point Analysis for Field Environmental Information in Agriculture International journal

    Andri Prima NUGROHO, Takashi OKAYASU, Mitsuoka Muneshi, Eiji Inoue, Lilik SUTIARSO, Hirai Yasumaru

    Proceedings of International Symposium on Agricultural and Biosystem Engineering 2013   2013.8

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  • Modeling and Prediction of the Mechanical Interaction between Soil and Tillage Tool by DEM Reviewed International journal

    Takahisa FUKUDA, Takashi OKAYASU, Keita TSUCHIYA, Eiji Inoue, Hirai Yasumaru, Mitsuoka Muneshi

    Proc. 11th Int. Conf. Anal. Discontinuous Deformation   2013.8

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    Tillage is one of important operations to improve and maintain top soil condition in farmland. The soil condition is different according to soil types and region in general. Various kinds of the tillage methods and tools have been developed up to present. However, their developments have been often conducted by experience and sense using trial and error methods. From these backgrounds, developments of numerical analysis method have been tried to clarify the mechanism for soil-tillage interaction phenomena and to reduce the developing time and costs. In this study, the soil-tillage interaction simulation was established by a three-dimensional geometry of a disk plow and soil layer modeled by using discrete element method (DEM). Trac-tion resistances acting on the disk plow and soil cutting phenomena were estimated in the simulation. They were compared with the experimental results. The simulated results agreed qualitatively with the experimental results.

  • Development of Actuation Framework for Agricultural Informatization Supporting System International journal

    Andri, N.P., Okayasu, T., Inoue, E., Hirai, Y. and Mitsuoka, M.

    Proc. IFAC2013 Bio Robotics Conf.   2013.3

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  • Change Point Analysis for Environmental Information in Agriculture Reviewed International journal

    Okayasu, T., Mitsuoka, M., Andri, P.N., Yoshida, H., Nanseki, T. and Inoue, E

    Proc. AFITA/WCCA2012   2012.9

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  • Development of Intelligent Control System for Greenhouse Reviewed International journal

    Andri, P.N., Okayasu, T., Fushihara, H., Mitsuoka, M. and Inoue, E.

    Proc. AFITA/WCCA2012   2012.9

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  • Feasibility Study on Informatization Agricultural Supporting System and Evaluation of its Validity International journal

    Okayasu, T., Yoshida, H., Andri, P.,N., Mitsuoka, M., Inoue, E.

    CIGR-AgEng2012   2012.7

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  • Modeling and prediction of soil cutting behavior by a plow International journal

    Okayasu, T., Morishita, K., Terao, H., Muneshi, M., Inoue, E., Fukami, K.

    CIGR-AgEng2012   2012.7

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  • Development of intelligent irrigation system for greenhouse International journal

    Okayasu, T., Andri, P.,N., Fushihara, Hirano, O., Yoshida, H., Inoue, E.

    Proc. 6th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2012.6

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  • Strength evaluation of bearing in sidedisk for cutting small ditches by finite element method International journal

    Terao, H., Okayasu, T., Fkuda, K. Fukami, K., Mitsuoka, M., Inoue, E.

    Proc. 6th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2012.6

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  • Application of Change Point Analysis for Long-term Environmental Monitoring Data Reviewed International journal

    Okayasu, T. Mitsuoka, M., Andri P.N., Inoue, E.

    Proceeding on International Workshop on ICT in Geo-Engineering   2012.5

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  • 小明渠作溝用サイドディスク設計のための有限要素法の適用性に関する研究 Reviewed

    大庭裕史,岡安崇史,寺尾悠希,深見公一郎,渡辺輝夫,光岡宗司,井上英二

    農業機械学会誌   2012.5

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  • 農用車両走行による諫早湾干拓土壌の構造と力学特性の変化 Reviewed

    宮嵜朋浩,岡安崇史,杉本知史,井上英二

    農作業研究   2012.1

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  • Development of Simple Field Monitoring System for Agriculture and Evaluation of its Validity Reviewed International journal

    Okayasu, T., Yoshida, H., Afroja, K., Ozaki, A., Mitsuoka, M., Inoue, E.

    Proc. Int. Conf. Env. Aspects Bangladesh   2011.9

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  • 情報化農業支援システムのハウス栽培いちごの生産管理への応用に関する基礎的研究 Reviewed

    吉田博通,岡安崇史,平野修,小野聖一朗,安部貞昭,清水宣雄,光岡宗司,井上英二,崔 重燮

    農業機械学会九州支部誌   2011.8

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  • Prediction of compaction behavior of heavy clayey soil beneath an off-road vehicle International journal

    Miyazaki, T., Okayasu, T., Inoue, E.

    Proc. ASABE2011   2011.8

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  • Feasibility Study on Field Monitoring and Work Recording System in Agriculture International journal

    Okayasu, T., Yoshida, H., Miyazaki, T., Nanseki, T., Mitsuoka, M., Inoue, E.

    Proc. ASABE2011   2011.8

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  • 受口切りの不一致やツル幅の不均一が伐倒方向と作業の安全性に及ぼす影響 Reviewed

    上村巧,岡安崇史,加利屋義広,岡勝,鹿島潤,井上英二

    森林利用学会   2011.3

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  • 小明渠作溝用サイドディスク設計への有限要素法の適用に関する基礎的研究 Reviewed

    大庭裕史,岡安崇史,寺尾悠希,深見公一郎,渡辺輝夫,光岡宗司,井上英二

    農業機械学会九州支部誌   2011.3

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  • Soil Compaction Analysis on Structured Cohesive Soft Ground Reviewed International journal

    Okayasu, T., Kamitsuji, N., Murakami, T., Miyazaki, T., Mitsuoka, M., Inoue, E., Fukami, K.

    Proc. 9th Asia-Pacific Conf. ISTVS   2010.9

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  • Tractor Running Tests at Isahaya Bay Reclamation International journal

    Miyazaki, T., Okayasu, T., Inoue, E.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Development of Field Monitoring and Work Recording System in Agriculture International journal

    Okayasu,T., Yamabe, N., Marui, A., Miyazaki, T., Mitsuoka, M., Inoue, E.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • 諫早湾干拓土壌におけるトラクタ走行で生じる踏圧現象 Reviewed

    宮嵜朋浩・岡安崇史・山田寧直・井上英二

    農作業研究   2010.2

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  • Development of simple field monitoring system for agricultural production and management International journal

    Okayasu, T., Yamabe,N. Mrui, A. Mitsuoka, M., Inoue, E.

    IWABE2009   2009.12

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  • Numerical Soil Compaction Analysis on Structured Soft Ground International journal

    Okayasu, T., Miyazaki, T., Kamitsuji, N., Mitsuoka, M., Inoue, E., Fukami, K.

    ISTRO2009, Izmir   2009.6

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  • 倒伏初期における追口高さが内部応力に与える影響 Reviewed

    上村巧,岡安崇史,鹿島潤,佐々木達也,岡勝,加利屋義広,井上英二

    森林利用学会   2009.4

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  • ハイパースペクトルカメラ画像を用いた水稲の生育診断・品質評価に関する研究 Reviewed

    平田真理,岡安崇史,羽田野梨絵,山邉信利,安武隼人,内田 進,稲葉繁樹,光岡宗司,井上英二

    農業機械学会九州支部誌   2008.8

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  • Application of Discrete Element Method to Solve Shaking Separation Mechanisms in Head-Feeding Combine Harvester International journal

    Yamagata, Y., Okayasu, T., Eguchi, H., Sinkai, S., Furuno, Y., Mitsuoka, M., Inoue, E., Imamura, E.

    Proc. 4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2008.5

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  • Computational Mechanical Consideration on Soil Compaction Behavior due to Wheel Traffics after Tillage International journal

    Okayasu, T., Matsuda, H., Furuno, Y., Kamitsuji, N., Mitsuoka, M., Inoue, E., Ueno, M., Fukami, K.

    Proc. 4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2008.5

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  • 自脱型コンバイン揺動選別部の性能向上のための数値解析法の開発

    江口 寛,岡安崇史,山形友佑,新開聡,光岡宗司,井上英二,今村英一

    九州大学農学芸誌   2008.3

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  • 営農支援のための圃場気象環境情報モニタリングシステムの開発に関する基礎的研究

    羽田野梨絵,岡安崇史,平田真理,山邉信利,中司 敬,光岡宗司,井上英二

    九州大学農学芸誌   2008.3

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  • Elastoplastic deformation analysis on soil compaction by wheel traffics International journal

    Okayasu, T., Matsuda, H., Furuno, Y., Mitsuoka, M., Inoue, E., Hashiguchi, K.

    Plasticity 2008   2008.1

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  • Utilization of Hyperspectral Imaging Technique for Low Protein Rice Production in Kasuya, Fukuoka International journal

    Okayasu, T., Hadano, R., Hirata, M., Yamabe, N., Yasutake, H., Nakaji, K., Mitsuoka, M., Inoue, E.

    Int. S. Agr. Struct. Agr. Engng. 2007   2007.1

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  • 超過応力テンソル導入による接線粘塑性ひずみ速度を考慮した超過応力モデル Reviewed

    橋口公一,岡安崇史,尾崎利行

    日本機械学會論文集A編   2007.1

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  • Mathematical models for soil displacement under a rigid wheel Reviewed International journal

    Fukami, K., Ueno, M., Hashiguchi, K., Okayasu, T.

    J. Terramech.   2007.1

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  • Finite Element Analysis of Particle Assembly-water Coupled Frictional Contact Problem Reviewed International journal

    Ozaki, S., Hashiguchi, K., Okayasu, T. and Chen, D.H.

    CMES   2007.1

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  • 構造を有する地盤の転圧現象に関する弾塑性有限要素解析 Reviewed

    岡安崇史,大山将史,古野裕子,光岡宗司,井上英二,橋口公一

    応用力学論文集(土木学会)   2007.1

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  • Elastoplastic finite element analysis on soil compaction phenomena by wheel traffics International journal

    Okayasu, T., Matsuda, H., Furuno, Y., Mitsuoka, M., Inoue, E., Hashiguchi, K., Ueno, M., Fukami, K.

    Int. WS Agri. Biosy. Engng.   2007.1

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  • Elastoplastic finite element analysis on uplift problem of ground anchor subject to repeated loading Reviewed International journal

    Okayasu T., Ozaki, T., Hashiguchi, K., Inoue, E.

    Proc. 4th Asian-Joint Sympo. Geotech. & Geoenviron. Engng. (JS-Dalian 2006)   2006.1

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  • Finite element analysis on deformation behavior of metallic body International journal

    Okayasu, T., KInoshita, K., Shimomura, T. Hashiguchi, K., Inoue, E..

    Proc. 35th Solid Mech. Conf.   2006.1

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  • Finite Element Analysis of the Wheel Traveling Phenomenon by the Subfriction Surface Model International journal

    Ozaki, S., Hashiguchi, K., Okayasu, T., Chen, D.H.

    International Conference on Computational & Experimental Engineering and Sciences 2005   2005.1

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  • Elastoplastic constitutive equation of volcanic sandy soil “SHIRASU” based on the subloading surface model International journal

    Hira, M., Hashiguchi, K., Okayasu, K.

    Dislocations, Plasticity and Metal Forming (Proc. Plasticity ’05: 11th Int. Symp. Plasticity and its Application)   2005.1

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  • A basic research of the strength to the solidification soil on the soft ground International journal

    Yoshimaru, T., Okayasu T., Hashiguchi, K., Sakajo, S.

    Dislocations, Plasticity and Metal Forming (Proc. Plasticity ’05: 12th Int. Symp. Plasticity and its Application)   2005.1

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  • Finite element analysis on uplift problem of ground anchor, Dislocations International journal

    Okayasu T., Hashiguchi, K., Yajima, D., Ozaki, T., Ozaki, S.

    Dislocations, Plasticity and Metal Forming (Proc. Plasticity ’05: 11th Int. Symp. Plasticity and its Application)   2005.1

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  • PIV法(粒子画像流速測定法) Reviewed

    岡安崇史

    地盤工学会誌(土と基礎)   2005.1

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    PIV (Particle Image Velocimetry)

  • すべり摩擦現象を考慮した圧密試験の土-水連成有限要素解析 Reviewed

    尾崎伸吾,岡安崇史,橋口公一,陳玳

    応用力学論文集(土木学会)   2005.1

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    Soil-Water Coupled Finite Element Analysis of Consolidation Test Consdering Frictional Sliding Phenomenon

  • Proposal of elasto-viscoplastic constitutive model based on subloading surface concept and its application to metal material International journal

    Okayasu, T., Takabayashi, R., Hashiguchi, K., Inoue, E..

    International Conference on Computational & Experimental Engineering and Sciences 2005   2005.1

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  • Elastoplastic finite element analysis of footing problem on soil ground by the subloading surface model International journal

    Ozaki, T., Hashiguchi, K., Okayasu, T.

    International Conference on Computational & Experimental Engineering and Sciences 2005   2005.1

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  • Subfriction Surface Model" International journal

    Ozaki, S., Hashiguchi, K., Okayasu, T., Chen, D.H.

    International Conference on Computational & Experimental Engineering and Sciences 2005   2005.1

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  • 繰返し荷重を受けるアンカー周辺地盤の変形挙動に関する弾塑性有限要素解析 Reviewed

    岡安崇史,橋口公一,尾崎利行,矢嶋泰基,尾崎伸吾,木下和典

    応用力学論文集(土木学会)   2004.1

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    Elastoplastic finite element analysis on deformation behavior of ground surrounding anchor subjected to cyclic loading

  • Deformation analysis of cohesive soft grounds with solidified surface under fill construction International journal

    Yoshimaru, T., Hashiguchi, K., Okayasu T., Sakajo, S.

    Proc. Int. Conf. Comput. Exper. Eng. Sci.   2004.1

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  • Elastoplastic finite element analysis of the trapdoor problem International journal

    Ozaki, T., Okayasu, T., Hashiguchi, K. Yajima, D.

    Proc. Int. Conf. Comput. Exper. Eng. Sci.   2004.1

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  • Finite element simulation on uplift problem of ground anchor International journal

    Okayasu, T., Hashiguchi, K., Ozaki, T, Yajima, D., Ozaki, S.

    Proc. Int. Conf. Comput. Exper. Eng. Sci.   2004.1

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  • Rate-dependent inelastic constitutive equation: The extension of elastoplasticity Reviewed International journal

    Hashiguchi, K., Okayasu, T. and Saitoh, K.

    Int. J. Plasticity   2004.1

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  • Trap-Door問題に関する弾塑性有限要素解析 Reviewed

    岡安崇史,橋口公一,尾崎利行,矢島泰基,尾崎伸吾

    テラメカニックス   2004.1

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    Elastoplastic finite element analysis on trap-door problem

  • PIVによる地盤変形挙動の計測と地盤内応力予測に関する研究 Reviewed

    岡安崇史,橋口公一,尾崎伸吾,武部和之,川口史郎,上野正実,深見公一郎

    テラメカニックス   2004.1

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    Studies on the measurement of the soil deformation by piv and the prediction for the stress in soil

  • サイロ内紛粒体層の流動現象に関する弾塑性有限要素解析 Reviewed

    岡安崇史,橋口公一,尾崎利行,矢嶋泰基,尾崎伸吾

    農業機械学会誌   2004.1

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    Elastoplastic finite element analysis on flow phenomena of powder and granular materials in silo

  • 下負荷面摩擦モデルを用いた接触・摩擦問題の有限要素解析 Reviewed

    尾崎伸吾,橋口公一,岡安崇史,堀田直岐

    日本機械学会論文集A編   2004.1

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    Finite element analyses of frictional contact problems by the subloading-friction model

  • 下負荷面摩擦モデルを用いた地盤-杭間の相互作用の弾塑性有限要素解析 Reviewed

    尾崎伸吾,橋口公一,岡安崇史

    応用力学論文集(土木学会)   2004.1

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    An elastoplastic finite element analysis of soil-pile interaction by the subloading-friction model

  • 盛土施工に伴う過圧密地盤に関する基礎的研究 Reviewed

    吉丸哲司,橋口公一,岡安崇史,阪上最一

    応用力学論文集(土木学会)   2004.1

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    Deformation of over-consolidated soils under fill construction

  • 下負荷面モデルを導入した有限要素法による降下床実験のシミュレーション Reviewed

    尾崎利行,岡安崇史,橋口公一,矢嶋泰基

    応用力学論文集(土木学会)   2004.1

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    Lowering trap door simulation by finite element method introduced subloading surface model

  • 下負荷面の概念に基づく摩擦理論 Reviewed

    橋口公一,岡安崇史,尾崎伸吾

    日本機械学会論文集A編   2003.1

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    Friction theory based on the subloading surface concept

  • Tangential stress-rate effect in soils subjected to cyclic circular stress path in the deviatoric stress plane International journal

    Setouchi, H., Hashiguchi, K., Shikanai, T., Okayasu, T.

    Proc. Int. Conf. Comput. Exper. Eng. Sci.   2003.1

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  • Extended friction theory based on the subloading surface model, Discolations International journal

    Hashiguchi, K., Okayasu, T., Ozaki, T.

    Proc. Plasticity ’03: 10th Int. Symp. Plasticity and its Application   2003.1

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  • アンカー引抜時の地盤の変形挙動に関する弾塑性有限要素解析 Reviewed

    岡安崇史,橋口公一,尾崎利行,竹添亮

    応用力学論文集(土木学会)   2003.1

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    Elastoplastic finite element analysis of ground deformation behavior due to uplifting of anchor

  • 一般化速度依存性非弾性構成式(金属への適用) Reviewed

    岡安崇史,橋口公一

    日本機械学会論文集A編   2003.1

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    Generalized rate-dependent inelastic constitutive equation (Application to metals)

  • 新しい土の変位計測法 Reviewed

    岡安崇史,尾崎伸吾,武田敏

    農業機械学会誌   2002.1

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    An advanced technique for displacement measurement of soils

  • Deformation behavior of Shirasu and its prediction by the subloading surface model Reviewed International journal

    Hira, M., Hashiguchi, K., Okayasu, T. and Miwa, K.

    Soils and Foundations   2002.1

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    Deformation behavior of shirasu and its prediction by the subloading surface model

  • Evaluation of typical conventional and unconventional plasticity models for prediction of softening behavior of soils Reviewed International journal

    Hashiguchi, K., Saitoh, K., Okayasu, T. and Tsutsumi, S.

    Geotechnique   2002.1

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    Evaluation of typical conventional and unconventional plasticity models for prediction of softening behavior of soils

  • 弾塑性学に関するインターネット教育の一提案 Reviewed

    岡安崇史・橋口公一・尾崎伸吾

    地盤工学会誌(土と基礎)   2001.1

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    A proposal for internet education on elastoplasticity

  • Time-dependent elastoplastic constitutive equation of soils and its application to FEM implementation Reviewed International journal

    Okayasu, T. and Hashiguchi, K.

    Lowland Tech. Int.   2001.1

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    Time-dependent elastoplastic constitutive equation of soils and its application to fem implementation

  • 繰返し負荷を受ける平板下の地盤の弾塑性有限要素解析 Reviewed

    岡安崇史・橋口公一・堤成一郎・尾崎伸吾・上野正実

    農業機械学会誌   2001.1

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    Elastoplastic finite element analysis for ground deformation behavior subjected to cyclic loading

  • 古典塑性論および非古典塑性論の軟化挙動予測特性 Reviewed

    橋口公一・齊藤公志郎・岡安崇史・堤成一郎

    応用力学論文集(土木学会)   2001.1

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    Evaluation of conventional and unconventional plasticity for prediction of softening behavior

  • 拡張下負荷面モデルを導入した有限変形・土-水連成有限要素解析プログラムの開発 Reviewed

    橋口公一,岡安崇史,堤成一郎,上野正実

    農業機械学会誌   2000.1

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    Development of fem program as a soil-water coupled finite deformation introducing the extended subloading surface model

  • Deformation behavior of shallow foundation beneath footing subjected to cyclic load International journal

    Okayasu, T., Hashiguchi, K., Tsutsumi, S.

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications)   2000.1

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  • Comparison of Drucker-Prager’s and subloading surface models for prediction of soil deformation behavior International journal

    Hashiguchi K., Saitoh K., Okayasu T., Tsutsumi S.

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications)   2000.1

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  • Time-dependent elastoplastic constitutive equation Based on subloading surface model and its application to soils Reviewed International journal

    Hashiguchi, K. and Okayasu, T.

    Soils and Foundations.   2000.1

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    Time-dependent elastoplastic constitutive equation based on subloading surface model and its application to soils

  • 砂地盤上の剛性車輪のけん引変動に関する力学的考察 Reviewed

    上野正実,岡安崇史,橋口公一,鹿内健志,大嶺政朗

    農業機械学会誌   1999.1

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  • Time-dependent constitutive equation of soil International journal

    Hashiguchi, K., Wu, X., Okayasu, T.

    Proc. Int. Symp. Plasticity '99 (Proc. 7th Int. Symp. Plasticity & its Current Appl.   1999.1

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  • 画像処理による土の変位のオンライン計測に関する研究 Reviewed

    橋口公一,岡安崇史,上野正実,鹿内健志

    農業機械学会誌   1998.1

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    Image processing on-line measurement for soil displacement

  • Time-dependent elastoplastic constitutive model Reviewed International journal

    Hashiguchi, K., Wu, X., Okayasu, T. and Tsutsumi, S.,

    Metals and Materials   1998.1

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    Time-dependent elastoplastic constitutive model

  • 走行車輪下の土の変形の精密計測 Reviewed

    鹿内健志,上野正実,橋口公一,能勢行則,岡安崇史

    農業機械学会誌   1997.1

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  • On the general flow rule International journal

    Hashiguchi, K., Okayasu, T., Sakajo, S.

    On the general flow rule, Proc. 6th Int. Symp. Numer. Models Geomech., pp.87-92, 1997.   1997.1

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  • Walking motion of the soil reaction on a whee International journal

    Ueno, M., Shikanai, T., Okayasu, T., Hashiguchi, K., Nohse, Y., Gotoh, M., Uchiyama, K.

    Proc. 4th Asia-Pacific Regional Conf. Terrain Vechicle Systems   1995.1

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  • Soil deformation beneath a rigid wheel International journal

    Ueno, M., Shikanai, T., Okayasu, T., Hashiguchi, K., Nohse, Y., Gotoh, M, Uchiyama, K.

    Proc. 4th Asia-Pacific Regional Conf. Terrain Vechicle Systems   1995.1

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  • Development and Application of a Low-Cost 3-Dimensional (3D) Reconstruction System Based on the Structure from Motion (SfM) Approach for Plant Phenotyping

    Arief, MAA; Nugroho, AP; Putro, AW; Sutiarso, L; Cho, BK; Okayasu, T

    JOURNAL OF BIOSYSTEMS ENGINEERING   49 ( 3 )   326 - 336   2024.9   ISSN:1738-1266 eISSN:2234-1862

  • Enhancing Image Quality Assessment in Plant Phenotyping Robots

    Pham Dong Thanh, Okayasu Takashi, Yasutake Daisuke, Hirai Yasumaru, Ozaki Takenori, Koga Masaharu, Hidaka Kota, Nomura Koichi, Vo Hien Bich

    Agricultural Information Research   33 ( 2 )   97 - 108   2024.7   ISSN:09169482 eISSN:18815219

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    <p>As robotic systems become increasingly integrated into plant phenotyping processes, the quality of images captured plays an increasingly crucial role in accurate data collection and analysis. Here we address the challenge of assessing and enhancing image quality in the context of plant phenotyping robot using a pan-tilt-zoom camera. We present a data-driven approach using machine learning, specifically the Random Forest classifier, to classify both blurred and sharp images. Our method involves feature extraction, data preprocessing, hyperparameter tuning, and cross-validation. The resulting model demonstrates promising performance as indicated by its accuracy, precision, recall, area under the curve (AUC), and feature importance analysis. Notably, our results support a highly accurate classifier, achieving a correct classification rate of 95% for sharp images and 92% for blurred ones, a receiver operating characteristic curve with an AUC of 0.93, and a precision-recall curve with an average precision of 0.91. Shapley Additive Explanations analysis identifies “edge density” and “mean gradient magnitude” as influential to the classifier, offering valuable insights for future feature engineering and model refinement. The classifier has a short inference time (2.8 s) on a Raspberry Pi 4B computer, both improving the quality of captured images and automatically eliminating blurred images. By enhancing image quality assessment, this research improves data reliability and the overall effectiveness of plant phenotyping robots. We discuss the implications of these findings and their practical relevance and suggest directions for future research.</p>

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  • Control of vapor pressure deficit (VPD) in micro-plant factory (McPF) to enhanced spinach microgreens growth

    Dzaky, MAF; Nugroho, AP; Prasetyatama, YD; Sutiarso, L; Falah, MAF; Okayasu, T

    SCIENTIA HORTICULTURAE   332   2024.6   ISSN:0304-4238 eISSN:1879-1018

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    Harnessing the power of Vapor Pressure Deficit (VPD) control, this novel research illuminates a pathway to enhanced plant growth and yield within Micro-Plant Factory (McPF) and Urban Mini-Plant Factory (UMPF) environments. The research focused on the growth parameters of spinach microgreens, with the experimental data originating from each system's upper, central, and lower shelves. Results indicated significantly enhanced plant height and dry weight on the central shelves, attributed to optimal VPD control. Growth analysis also revealed higher relative growth rates (RGR) under tightly managed VPD conditions on the central shelves, even amidst varying environmental parameters. Most notably, effective VPD control translated these growth metrics into increased yields. For instance, a 71 % and 66 % increase in final plant dry weight over the lower and upper shelves was noted. These advances were mirrored in the plant height, which also saw 57 % and 103 % growth. Overall, the findings underscore the critical role of VPD control in plant growth and yield enhancement within structured environments like McPF and UMPF, offering significant insights for future research in manipulating VPD for optimal plant growth and productivity.

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  • Effect of microclimate and photosynthesis on strawberry reproductive growth in a greenhouse: using cumulative leaf photosynthesis as an index to predict the time of harvest

    Shintaro Ono, Daisuke Yasutake, Kensuke Kimura, I. Kengo, Yoshiya Teruya, Kota Hidaka, Gaku Yokoyama, Tomoyoshi Hirota, Masaharu Kitano, Takashi Okayasu, Yukio Ozaki

    Journal of Horticultural Science and Biotechnology   99 ( 2 )   223 - 232   2024.3   ISSN:1462-0316 eISSN:2380-4084

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    We evaluate whether cumulative photosynthesis (A n,C) could predict the time of harvest in strawberry better than light (I C) or temperature (T a,C) as forecast indices. We monitored the daily dynamics of flowering, fruit set, and harvest in over 2,700 fruits across the growing season in a greenhouse in Japan. Photosynthesis was calculated using a biochemical model, and A n,C calculated by totalling the cumulative rate from flowering to harvest in each fruit. I C and T a,C were calculated by totalling daily cumulative light intensity and average temperature. A new index (D) was defined as the normalised variation of A n,C, I C, and T a,C, and a statistical analysis was conducted on the means for each index. The results showed that A n,C had the lowest D (0.114), suggesting that it was a better index for predicting the time of harvest. This study suggests the importance of considering the accumulation of photosynthates in individual fruit, which cannot be achieved by I C or T a,C, these results can be used to improve the forecasting and optimisation of yield. However, further research is required to substantiate these claims.

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  • Control of vapor pressure deficit (VPD) in micro-plant factory (McPF) to enhanced spinach microgreens growth Reviewed

    Dzaky, M. A. F., Nugroho, A. P., Prasetyatama, Y. D., Sutiarso, L., Falah, M. A. F. & Okayasu, T.

    Scientia Horticulturae   2024.1

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  • Effect of microclimate and photosynthesis on strawberry reproductive growth in a greenhouse: using cumulative leaf photosynthesis as an index to predict the time of harvest Reviewed International journal

    Ono, S., Yasutake, D., Kimura, K., Kengo, I., Teruya, Y., Hidaka, K., Yokoyama, G., Hirota, T., Kitano, M., Okayasu, T. & Ozaki, Y.

    Journal of Horticultural Science and Biotechnology   99 ( 2 )   2024.1

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  • Future Phenotyping

    OKAYASU Takashi

    Shokubutsu Kankyo Kogaku   36 ( 1 )   2 - 5   2024   ISSN:18802028 eISSN:18803563

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    DOI: 10.2525/shita.36.2

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  • Eco-friendly strategy for CO2 enrichment performance in commercial greenhouses based on the CO2 spatial distribution and photosynthesis Reviewed International journal

    Zhang, Y., Yasutake, D., Hidaka, K., Kimura, K., Okayasu, T., Kitano, M. & Hirota, T.

    Scientific reports   13 ( 1 )   2023.12

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  • Eco-friendly strategy for CO2 enrichment performance in commercial greenhouses based on the CO2 spatial distribution and photosynthesis

    Yue Zhang, Daisuke Yasutake, Kota Hidaka, Kensuke Kimura, Takashi Okayasu, Masaharu Kitano, Tomoyoshi Hirota

    Scientific Reports   13 ( 1 )   17277   2023.10   ISSN:2045-2322 eISSN:2045-2322

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    Abstract

    CO<sub>2</sub> enrichment is an essential environmental control technology due to its significantly enhancing effect on crop production capacity. Despite being a key energy consumer in protected agriculture (i.e. greenhouse systems), CO<sub>2</sub> enrichment remains at a low energy use efficiency level, highlighting the need for developing more energy-efficiency strategies for CO<sub>2</sub> enrichment. Therefore, this study employed the computational fluid dynamics (CFD) simulation method to replicate the CO<sub>2</sub> diffusion process resulting from CO<sub>2</sub> enrichment in three commercial strawberry greenhouses with varying geometric characteristics. Based on the CFD-simulated CO<sub>2</sub> concentration distributions, the leaf photosynthetic rate was calculated using a mathematical model group. The CO<sub>2</sub> enrichment efficiency was then analysed by calculating the ratio of increased photosynthesis across the cultivation area to the amount of energy (in CO<sub>2</sub> equivalent) used. The efficiency peaked when the average CO<sub>2</sub> concentration was approximately 500 μmol mol<sup>−1</sup>, thereby providing guidance for determining the target concentration of CO<sub>2</sub> enrichment in production. Although this study is limited as the CFD simulation only considered a typical short-period CO<sub>2</sub> enrichment event, future research will provide a broader analysis by considering changes throughout the day.

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  • Plant Phenotyping

    OKAYASU Takashi

    Shokubutsu Kankyo Kogaku   35 ( 2 )   39 - 47   2023   ISSN:18802028 eISSN:18803563

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    DOI: 10.2525/shita.35.39

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  • Crop-localised CO<inf>2</inf> enrichment improves the microclimate, photosynthetic distribution and energy utilisation efficiency in a greenhouse

    Yue Zhang, Daisuke Yasutake, Kota Hidaka, Takashi Okayasu, Masaharu Kitano, Tomoyoshi Hirota

    Journal of Cleaner Production   371   2022.10   ISSN:0959-6526 eISSN:1879-1786

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    In greenhouse cultivation, microclimate control is a highly energy-consuming process, and CO2 enrichment, which is a part of it, requires the direct consumption of fossil fuel energy. To achieve sustainable and economical greenhouse management, we must understand the performance and energy utilisation efficiency of CO2 enrichment in greenhouses. In this study, we conducted computational fluid dynamics (CFD) simulations for two CO2 enrichment methods in a strawberry greenhouse: (1) conventional overall greenhouse enrichment (‘Entire Enrichment’) and (2) crop-localised enrichment (‘Local Enrichment’). The spatial distribution of microclimate parameters was simulated using a CFD model; based on the results, the spatial distribution of the crop photosynthetic rate was also simulated using an environment–plant coupled model group. Furthermore, we quantitatively analysed the efficiency of CO2 enrichment (ECE) by calculating the changes in the photosynthetic carbon assimilation capacity of the crop canopy in relation to CO2 usage, which allowed us to propose a more efficient enrichment strategy. Compared with the Entire Enrichment method, the Local Enrichment method reduced the effects on greenhouse temperature and humidity but increased the average CO2 concentration inside the canopy by 264 μmol mol−1. As a result, Local Enrichment increased the average leaf photosynthetic rate inside the canopy by 1.48 μmol m−2 s−1. According to ECE analysis, Local Enrichment has huge advantages over Entire Enrichment; the mean ECE of Local Enrichment was approximately 4.4 times higher than that of Entire Enrichment (25.7 and 5.9 mmol mol−1, respectively). Moreover, scenario analysis indicated that the Local Enrichment system could be applied to larger greenhouses and improves ECE relative to that in a conventional system. Having compared the two enrichment methods comprehensively, we conclude that the Local Enrichment method could significantly improve the environmental parameters around the crop canopy in relation to photosynthesis and greatly enhance CO2 utilisation efficiency.

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  • Crop-localised CO2 enrichment improves the microclimate, photosynthetic distribution and energy utilisation efficiency in a greenhouse Reviewed International journal

    Zhang, Y., Yasutake, D., Hidaka, K., Okayasu, T., Masaharu, K. & Hirota, T.

    Journal of Cleaner Productio   371   2022.10

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  • A canopy photosynthesis model based on a highly generalizable artificial neural network incorporated with a mechanistic understanding of single-leaf photosynthesis

    Takahiro Kaneko, Koichi Nomura, Daisuke Yasutake, Tadashige Iwao, Takashi Okayasu, Yukio Ozaki, Makito Mori, Tomoyoshi Hirota, Masaharu Kitano

    Agricultural and Forest Meteorology   323   109036 - 109036   2022.8   ISSN:0168-1923 eISSN:1873-2240

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    Crop productivity is largely dependent on canopy photosynthesis, which is difficult to measure at farming sites. Therefore, real-time estimation of the canopy photosynthetic rate (Ac) is expected to facilitate effective farm management. For the estimation of Ac, two types of mathematical models (i.e., process-based models and empirical models) have been used, although both types have their own weaknesses. Process-based models inevitably require many model parameters that are difficult to identify, while empirical models, including artificial neural network (ANN) models, have a low predictive ability outside of the range of training datasets. To overcome these weaknesses, we developed a hybrid canopy photosynthesis model that included components of both process-based models and ANN models. In this hybrid model, the single-leaf photosynthetic rate (AL) and leaf area index (LAI) were first estimated from information easily obtainable at farming sites: AL was estimated by the process-based model of AL (i.e., the biochemical photosynthesis model of Farquhar et al. (1980)) from environmental data (photosynthetic photon flux density (PPFD), air temperature (Ta), humidity, and atmospheric CO2 concentration (Ca)), and the LAI was estimated by an analysis of crop canopy imagery. As highly explainable information for Ac, the estimated AL and LAI were input into the ANN model to estimate Ac. As such, the ANN model learned the logical relationships between the inputs (AL and LAI) and the output (Ac). Detailed validation analysis using nine spinach Ac datasets revealed that the hybrid ANN model can estimate Ac accurately throughout the whole growth period, even when training and test datasets were obtained in different seasons under different CO2 concentrations and based on training datasets of only three days. This study highlights the high generalizability of the hybrid ANN model, which is a prerequisite for practical application in environmentally controlled crop production.

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  • A canopy photosynthesis model based on a highly generalizable artificial neural network incorporated with a mechanistic understanding of single-leaf photosynthesis Reviewed International journal

    Kaneko, T., Nomura, K., Yasutake, D., Iwao, T., Okayasu, T., Ozaki, Y., Mori, M., Hirota, T. & Masaharu, K.

    Agricultural and Forest Meteorology   323   2022.8

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  • Mini plant factory development using IoT and cloud system for urban greens cultivation Reviewed International journal

    Dzaky, M. A. F., Nugroho, A. P., Prasetyatama, Y. D., Falah, M. A. F., Sutiarso, L. & Okayasu, T.

    IOP Conference Series: Earth and Environmental Science   1116 ( 1 )   2022.8

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  • Crop-local CO<inf>2</inf> enrichment improves strawberry yield and fuel use efficiency in protected cultivations

    Kota Hidaka, Shunji Nakahara, Daisuke Yasutake, Yue Zhang, Takashi Okayasu, Kazuhiro Dan, Masaharu Kitano, Kazuyoshi Sone

    Scientia Horticulturae   301   2022.7   ISSN:0304-4238 eISSN:1879-1018

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    In protected strawberry (Fragaria × ananassa Duch.) cultivation, CO2 enrichment is essential to enhance both fruit quality and yield. Fuel burning generators are commonly used to supply CO2 to entire commercial greenhouse space. However, methods that are less fuel-based are desired for contemporary agricultural practices. A new crop-local CO2 enrichment system using a modified fuel-burning generator has been developed to increase yields and decrease the fuel required for CO2 enrichment in greenhouse strawberry production. This crop-local CO2 enrichment (CLC) method directly supplies CO2 from perforated tubes set in the interrow space of the plant canopy. The effects of this technique on fruit quality, fruit yield, and fuel use efficiency have been examined in comparison with conventional CO2 enrichment (CC) practices. The CLC method increased CO2 concentration inside the plant canopy by 100–200 μmol mol–1 when compared with CC under the ventilating conditions by a roof window. This resulted in significant increases of approximately 10–26% in the average fruit weight, 13% in the cumulative fruit number, and 22% in cumulative marketable yield when compared to CC. Furthermore, cumulative fuel consumption was approximately 27% lower with the CLC method when compared to CC. These results indicate that CLC improves fuel use efficiency when compared with CC as it increased yields and decreased fuel consumption.

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  • Crop-local CO2 enrichment improves strawberry yield and fuel use efficiency in protected cultivations Reviewed International journal

    Crop-local CO2 enrichment improves strawberry yield and fuel use efficiency in protected cultivations Hidaka, K., Nakahara, S., Yasutake, D., Zhang, Y., Okayasu, T., Dan, K., Masaharu, K. & Sone, K.

    Scientia Horticulturae   2022.7

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  • Dynamics of carbon export from leaves as translocation affected by the coordination of carbohydrate availability in field strawberry Reviewed International journal

    Nakai, H., Yasutake, D., Kimura, K., I, K., Hidaka, K., Eguchi, T., Hirota, T., Okayasu, T., Ozaki, Y. & Kitano, M.

    Environmental and Experimental Botany   196   2022.4

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  • Dynamics of carbon export from leaves as translocation affected by the coordination of carbohydrate availability in field strawberry

    Nakai, H; Daisuke,; Kimura, K; Kengo, I; Hidaka, K; Eguchi, T; Hirota, T; Okayasu, T; Ozaki, Y; Kitano, M

    ENVIRONMENTAL AND EXPERIMENTAL BOTANY   196   2022.4   ISSN:0098-8472 eISSN:1873-7307

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    Carbon export from leaves as translocation is a result of plant coordination of leaf carbohydrate availability. Carbohydrate availability coordination is actively studied in model plants (Arabidopsis) under regulated conditions and can be optimized to increase productivity. However, in horticultural crops grown under field conditions, carbon export dynamics and coordination are poorly understood. The objective of this study was to analyze the dynamics of carbon export from leaves and the effects of carbohydrate availability coordination on these dynamics in strawberry grown under field conditions. Through three different day/night cycles, we measured leaf carbohydrate concentrations and photosynthetic rates and evaluated the dynamics of carbon export based on the leaf carbon balance. During the daytime, when carbon resources are almost entirely supplied by photosynthesis, strawberry leaves stored sucrose and starch. Starch synthesis was remarkable when sucrose concentration exceeded 150 mmol m−2, and the carbon export rate tended to increase. In the nighttime, when carbon resources are supplied by leaf sucrose and starch stored during the daytime, the starch concentrations decreased linearly and the carbon export rate was lower than the daytime level. These results indicate that in the daytime, the coordination of leaf carbohydrate availability for starch storage and carbon export was affected by leaf sucrose concentration, whereas, at night, it was regulated by leaf carbon storage levels at dusk rather than sucrose concentration. Thus, this study elucidates the basis of carbon export dynamics in strawberry leaves under field conditions, advancing our understanding of the role of leaf carbohydrates in translocation.

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  • Building of the Predictive Model for Ripened Brown Rice Yield Using Data Collected in the Production Sites and Analysis of Determinants of Yield Classes

    HIRAI Yasumaru, YAMAKAWA Takeo, INOUE Eiji, OKAYASU Takashi, MITSUOKA Muneshi

    Journal of the Japanese Agricultural Systems Society   38 ( 1 )   1 - 14   2022.3   ISSN:09137548 eISSN:21890560

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    <p>Rice production in Japan faces concerns over yield reduction and poor grain quality owing to unstable weather conditions and the deterioration of soil fertility. In addition, it needs to increase competitiveness against foreign agricultural products and other food products. This situation requires to develop analytical methods to effectively use data regarding agriculture, which is becoming easily available with information and communication technologies. The objectives of this study were 1) to build the predictive model of three classes (low, middle, and high) of ripened brown rice yield using data collected in the production sites, 2) to clarify limiting factors of yield using the predictive model, and 3) to investigate measures to improve yield. We applied support vector machine to build the predictive model using data collected from 2011 to 2016 in a total of 90 paddy fields. The paddy fields where Hinohikari cultivar was cultivated were located in the city of Itoshima, Fukuoka Prefecture. The predictive model built included three explanatory variables: the number of rough rice, daily mean sunshine hours during the period from five days after heading to the late ripening period, and mineral nitrogen supply from the early panicle formation to the late ripening periods. The predictive model achieved the classification accuracy of 77.8%. Particularly, paddy fields categorized in the low yield class had small tiller number at the panicle initiation stage. As the result, small number of rough rice decreased yield. Some paddy fields, where their yield was categorized in the middle class and was categorized in the high class with the number of rough rice greater than 28 thousand m<sup>-2</sup>, reduced yield because of shortage of mineral nitrogen supply during the ripening period. The measures to improve yield were as follows: for the paddy fields categorized in low yield class, to ensure appropriate number of rough rice by increasing tiller number during the vegetative growth stage, and for paddy fields where shortage of mineral nitrogen supply during the ripening period reduced yield, to apply topdressing two times to meet the standard nitrogen application rate in the surveyed region (3.6 kg/10a in total). This measure obtained for topdressing indicates that the analysis using survey data collected in rice production sites supported the standard that has been determined by local cultivation tests as well as trial and error in the production sites.</p>

    DOI: 10.14962/jass.38.1_1

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  • Closed Chamber System for Easily Measuring the Respiration Rate of Intact Fruits

    ONO Shintaro, YASUTAKE Daisuke, YOKOYAMA Gaku, TERUYA Yoshiya, HIDAKA Kota, OKAYASU Takashi, NOMURA Koichi, KITANO Masaharu

    Environment Control in Biology   60 ( 1 )   33 - 37   2022.1   ISSN:1880554X eISSN:18830986

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    <p> We designed and constructed a light-shielding, closed fruit chamber system that can easily measure the respiration rate of intact fruits. Intact strawberries (<i>Fragaria×ananassa</i> Duch. cv. Fukuoka S6) were placed in the newly-developed system, and the change in CO<sub>2</sub> concentration was measured. It was observed that this method was a valid means of determining the change in the CO<sub>2</sub> concentration. Also, the respiration rate of the intact fruits could be evaluated appropriately by fitting a theoretical equation to the change in CO<sub>2</sub> density for 180 s after closing the chamber measured by newly-developed system and obtaining the initial slope. This method was applied to intact strawberries at different ripening stages, and the effect of on the respiration rate was investigated. As the ripening stage progressed and the volume of fruits increased, the respiration rate per fruit at each ripening stage also significantly increased. However, there was no significant difference in the respiration rate per unit fruit volume at each ripening stage. These results suggest that newly-developed system is effective in measuring the respiration rate per fruit. This system would contribute to the comprehension of intact fruit respiration and photosynthate translocation to fruits.</p>

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  • Closed Chamber System for Easily Measuring the Respiration Rate of Intact Fruits Reviewed International journal

    Closed Chamber System for Easily Measuring the Respiration Rate of Intact Fruits Ono, S., Yasutake, D., Yokoyama, G., Teruya, Y., Hidaka, K., Okayasu, T., Nomura, K. & Masaharu, K.

    Environmental Control in Biology   60 ( 1 )   2022.1

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  • Mini plant factory development using IoT and cloud system for urban greens cultivation

    Dzaky M.A.F., Nugroho A.P., Prasetyatama Y.D., Falah M.A.F., Sutiarso L., Okayasu T.

    IOP Conference Series: Earth and Environmental Science   1116 ( 1 )   2022   ISSN:17551307

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    A significant urban population increases with the rising demand for higher food quality and security. Adapting the current food chain system and our eating patterns are needed to make them more sustainable. Plant factories are one approach for making the food chain system more sustainable. However, plant factory systems typically require significant initial capital expenditure. As a result, a mini plant factory, which is more affordable and flexible, will be appropriate in urban areas. The objective of this study was to design, build, and evaluate a mini plant factory system for horticultural crop production. The mini plant factory system comprises a mini cultivation room with three growing shelves equipped with a microclimate sensor, nutrient dosing system, artificial growth light, and ventilation system. Sensors and actuators are integrated with the Agrieye Cloud system for monitoring and control and can autonomously execute data retrieval and actuation. Mini Plant Factory operates by automatically capturing monitoring data every five minutes; if a value exceeds the limit, the actuator control system activates to stabilize that value. The linear regression test yielded the most excellent R2 value of 0.999 for sensor calibration. The validation test was conducted using RMSE (Root Mean Square Error) and MAPE (Mean Absolute Percentage Error). The results show that the lowest RMSE values are 0.133, and the lowest MAPE values are 0.082%. The data logging system's performance is perfect. The control and scheduling system works well but does not function optimally since there are no interruptions throughout the data gathering process.

    DOI: 10.1088/1755-1315/1116/1/012028

    Scopus

  • Investigation of the Feasibility of Applying Maturity-Stage Green Manure (Crimson Clover) for Rice Production through a Pot Experiment

    Ko Kyi Mon Mon, Hirai Yasumaru, Yamakawa Takeo, Mori Yuki, Inoue Eiji, Okayasu Takashi, Mitsuoka Muneshi

    Journal of the Japanese Society of Agricultural Technology Management   27 ( 3 )   85 - 98   2022   ISSN:13410156 eISSN:24242403

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    DOI: 10.20809/seisan.27.3_85

    CiNii Research

  • Development of Plant Phenotyping Platform Using Low-Cost IoT Devices and Its Performance Evaluation

    Jiro Ito, Takashi Okayasu, Koichi Nomura, Daisuke Yasutake, Tadasige Iwao, Yukio Ozaki, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    Proceedings of the Forum "Math-for-Industry" 2019   109 - 116   2022   ISSN:2198-350X ISBN:9789811911538, 9789811911545 eISSN:2198-3518

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    DOI: 10.1007/978-981-19-1154-5_6

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  • Application of 3D reconstruction system based on close-range photogrammetry method for plant growth estimation

    Putro A.W., Nugroho A.P., Sutiarso L., Okayasu T.

    IOP Conference Series: Earth and Environmental Science   1038 ( 1 )   2022   ISSN:17551307

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    Plant growth monitoring is an important aspect of precision agriculture implementation. The monitoring can be performed by estimating the volume by the result of Three-dimensional (3D) reconstruction by using Close-range Photogrammetry. However, to present the functionality of the system for plant growth behavior, it is necessary to evaluate its accuracy and performance. In this study, a plant growth estimation system based on non-contact measurement using the Close-Range Photogrammetry (CRP) method for volume estimation of Chinese cabbage was developed to measure the growth. The objective of this study was to apply a 3D reconstruction system using the CRP method for validating volume variation and estimate the rate of growth of Chinese cabbage. This system consists of Canon 700D's DSLR camera and camera stabilizer. The stage of image processing using 3DF's Zephyr Pro photogrammetric software for generating 3D models. For the validation purposes and its functionality for modelling and estimating volumetric objects, Chinese cabbage with four size variations at different ages was used (14, 21, 28, and 35 Days After Transplant). As the result, the developed system could observe and generate the plant in a three-dimensional manner resemble the actual plant model. Farther the volumetric validation could be obtained with the result of R2 of 0,9991, Root Mean Square Error (RMSE) = 26,08 cm3 and Mean Absolute Percentage Error (MAPE) = 10,43%. From the result, the system could be used for generating plants into 3D objects and its accuracy of measurement is quite good. Further improvements in accuracy need to be made for precise measurements as well as validation for other crop types.

    DOI: 10.1088/1755-1315/1038/1/012051

    Scopus

  • Analysis of airflow distribution on urban mini plant factory using computational fluid dynamics

    Suwardana R., Nugroho A.P., Prasetyatama Y.D., Falah M.A.F., Sutiarso L., Okayasu T.

    IOP Conference Series: Earth and Environmental Science   1116 ( 1 )   2022   ISSN:17551307

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    Limited land for agricultural cultivation in urban areas makes it difficult to fulfill for healthy and sustainable food. Mini Plant Factory is an alternative to produce food, especially vegetables. In the Mini Plant Factory, the distribution of air flow is one thing that must be considered because the air flow will affect the growth of the plants in it so it is necessary to do an analysis to determine the good air flow in the mini plant factory using Computational Fluid Dynamics (CFD) software. The purpose of this study was to analyse the aeration of the air flow in the mini plant factory using Computational Fluid Dynamics. This research was carried out at smart agriculture UGM, in this study using a mini plant factory measuring 70 x 40 x 150 cm, which is equipped with a temperature sensor (DHT 22) of 1 units in each shelf and 1 unit on the outside for measure environmental conditions, with a total number of 4 temperature sensors, the mini plant factory is also equipped with an automatic nutrition system that is integrated with the cloud, and is equipped with artificial lighting. CFD analysis was carried out using the Ansys 2022 software, the laptop specifications used were AMD Ryzen 7 4800 H, NVIDIA GeForce RTX 3050. Temperature data was measured during the observation period. The analysis method in CFD has several stages, namely preparation, meshing workflow, mesh, models, materials, boundary conditions, solution and post-processing. The last part is data validation, namely by making a comparison between the CFD results and the actual data, then calculating the error value using MAPE. The expected result are visualisation various distribution of aeration temperatures inside mini plant factory, optimum aeration design for mini plant factory.

    DOI: 10.1088/1755-1315/1116/1/012029

    Scopus

  • Analysis of airflow distribution on urban mini plant factory using computational fluid dynamics Reviewed International journal

    Suwardana, R., Nugroho, A. P., Prasetyatama, Y. D., Falah, M. A. F., Sutiarso, L. & Okayasu, T.

    IOP Conference Series: Earth and Environmental Science   1116   2021.10

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  • Application of 3D reconstruction system based on close-range photogrammetry method for plant growth estimation Reviewed International journal

    Putro, A. W., Nugroho, A. P., Sutiarso, L. & Okayasu, T.

    IOP Conference Series: Earth and Environmental Science   1038   2021.10

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  • Effect evaluation of drainage condition and water content on cyclic plastic deformation of aged ballast and its estimation models Reviewed International journal

    Yang, J., Ishikawa, T., Tokoro, T., Nakamura, T., Kijiya, I., Okayasu, T.

    Transportation Geotechnics   283   2021.6

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  • Long-term compound interest effect of CO2 enrichment on the carbon balance and growth of a leafy vegetable canopy Reviewed International journal

    Nomura, K., Yasutake, D., Kaneko, T., Takada., A., Okayasu, T., Ozaki, Y., Mori, M., Kitano, M.

    Scientia Horticulturae   283   2021.6

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  • Investigation of the feasibility of applying maturity-stage green manure (crimson clover) for rice production through a pot experiment Reviewed

    Ko, K. M. M,, Hirai, Y., Yamakawa, T., Mori, Y., Inoue, E., Okayasu, T., Mitsuoka, M.

    Journal of Japanese Society of Agricultural Technology Management   27 ( 3 )   2021.2

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  • Volume Measurement of Particle Layers in a Container by Using Helmholtz Resonance

    Inoue, S., Hirai, Y., Inagaki, S., Inoue, E., Okayasu, T., Mitsuoka, M.

    J. Faculty of Agriculture, Kyushu University   66 ( 1 )   2021.2

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    Repository Public URL: https://catalog.lib.kyushu-u.ac.jp/opac_detail_md/?lang=0&amode=MD100000&bibid=4363556

  • An Evaluation Method for Threshing Operations Using a Rod–shaped Threshing Tooth Acting on a Single Rice

    Hirai, Y., Furukawa, D., Inoue, E., Okayasu, T., Mitsuoka, M.

    J. Faculty of Agriculture, Kyushu University   66 ( 1 )   2021.2

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    Repository Public URL: http://hdl.handle.net/2324/4363552

  • Mobile mecavision: automatic plant monitoring system as a precision agriculture solution in plant factories International journal

    Wijanarko, A., Nugroho, A.P., Kusumastuti, A.I., Dzaky, M.A.F., Masithoh, R.E., Sutiarso, L., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Development of environmental monitoring systems based on LoRa with cloud integration for rural area International journal

    Hidayat, M.S., Nugroho, A.P., Sutiarso, L., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Appropriate adaptation of precision agriculture technology in open field cultivation in tropics International journal

    Nugroho, A.P., Sutiarso, L., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Quantification of leaf movement to study the circadian rhythm using the optical flow International journal

    Nugroho, A.P., Maghfiroh, S., Fatmawati, D., Edwantiar, G.P., Sutiarso, L., Masithoh, R.E., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Implementation of crop growth monitoring system based on depth perception using stereo camera in plant factory International journal

    Nugroho, A.P., Fadilah, M.A.N., Wiratmoko, A., Azis, Y.A., Efendi, A.W., Sutiarso, L., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Development of short-term evapotranspiration forecasting model using time series method for supporting the precision agriculture management in tropics International journal

    Nugroho, A.P., Rahayu, D.E., Sutiarso, L., Fallah, M.A.F., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Plant growth prediction model for lettuce (Lactuca sativa.) in plant factories using artificial neural network International journal

    Rizkiana, A., Nugroho, A.P., Salma, N.M., Afif, S., Masithoh, R.E., Sutiarso, L., Okayasu, T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Three-dimensional (3D) reconstruction for non-destructive plant growth observation system using close-range photogrammetry method International journal

    Arief, M.A.A., Nugroho, A.P., Putro, A.W., Dananta, D.H., Masithoh, R.E., Sutiarso, L., Okayasu T.

    IOP Conference Series: Earth and Environmental Science,   2021.1

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  • Prediction of Tractor Behavior Based on Reconstructed Terrain Profiles by Stereo-vision Camera - Influence of Stereo-vision Camera Arrangement on Reconstructed Terrain Profiles accuracy ? Reviewed

    Shin,S., Mitsuoka,M., Inoue, E., Okayasu, T., Hirai, Y., Choe, J.

    Journal of the Japanese Society of Agricultural Machinery and Food Engineers   82 ( 5 )   2020.9

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  • Long-term compound interest effect of CO2 enrichment on the carbon balance and growth of a leafy vegetable canopy Reviewed International journal

    Nomura, K., Yasutake, D., Kaneko, T., Takada., A., Okayasu, T., Ozaki, Y., Mori, M., Kitano, M.

    Scientia Horticulturae   2020.9

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  • CFD analysis for evaluating and optimizing spatial distribution of CO2 concentration in a strawberry greenhouse under different CO2 enrichment methods Reviewed International journal

    Zhang, Y., Yasutake, D., Hidaka, K., Kitano, M., Okayasu, T.

    Computers and Electronics in Agriculture   179   2020.9

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  • Prediction of Tractor Behavior based on Reconstructed Terrain Profiles Using Stereo-vision Camera ? Investigation of tractor behavior simulation on reconstructed ground and actual ground ? Reviewed

    Shin,S., Mitsuoka,M., Inoue, E., Okayasu, T., Hirai, Y., Matsui, M., Choe, J.

    Journal of the Japanese Society of Agricultural Machinery and Food Engineers   82 ( 3 )   2020.9

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  • グレンタンクに種々の形状で堆積した籾層の重量検量式 Reviewed

    平井 康丸, 樫野 雅和, 上加郁朗, 光岡宗司, 井上英二, 岡安崇史

    農業食料工学会誌   82 ( 4 )   2020.7

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  • Prediction of Tractor Behavior Based on Reconstructed Terrain Profiles by Stereo-vision Camera - Influence of Stereo-vision Camera Arrangement on Reconstructed Terrain Profiles accuracy – Reviewed

    Shin,S., Mitsuoka,M., Inoue, E., Okayasu, T., Hirai, Y., Choe, J.

    Journal of the Japanese Society of Agricultural Machinery and Food Engineers   82 ( 3 )   2020.5

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  • Effects of supplemental lighting during the period of rapid fruit development on the growth, yield, and energy use efficiency in strawberry plant production Reviewed International journal

    Yoneda, A., Yasutake, D., Hidaka, K., Muztahidin, N., Miyoshi, Y., Kitano, M., Okayasu, T.

    International Agrophysics   34 ( 2 )   2020.3

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  • Design and Test of a Flow Valve Orifice in a Crane Hoisting System

    Li, M., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y., Song, X.

    J. Faculty of Agriculture, Kyushu University   65 ( 1 )   2020.2

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  • Long-term and continuous measurement of canopy photosynthesis and growth of spinach Reviewed

    Koichi Nomura, Akihiro Takada, Hirosato Kunishige, Yukio Ozaki, Takashi Okayasu, Daisuke Yasutake, Masaharu Kitano

    Environmental Control in Biology   58 ( 2 )   21 - 29   2020.1

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    To understand long-term association between canopy-scale photosynthesis and growth, we continuously and simultaneously measured the net photosynthetic rate (Ac) and leaf area index (LAI) of a spinach canopy from transplantation to harvesting. This long-term measurement was enabled by combining an open-type flux chamber method and image analysis of top-of-view canopy photographs. The photosynthetic photon flux density (PPFD) was the major determinant of Ac during a short-term period, but the change in Ac was significantly amplified by an increase in LAI during a long-term period. LAI, measured with reliable accuracy from gap fractions (projected non-leaf areas) of top-of-view photographs, increased exponentially through the growth period. These results indicate a positive feedback loop between photosynthesis and growth (i.e., the growth of leaves amplifies photosynthesis, and the amplified photosynthesis further accelerates the growth of leaves). Consequently, a linearity was found between cumulative canopy net photosynthesis (ΣAc) and LAI, implying that throughout the growth period, a fixed proportion of dry matter was partitioned to the leaves and that the leaf area was expanded in proportion to the partitioned dry matter. This linearity between ΣAc and LAI also suggests that growth of a leafy vegetable canopy can be predicted from canopy photosynthesis.

    DOI: 10.2525/ecb.58.21

  • Physicochemical properties and nitrogen mineralization of maturity-stage green manure (crimson clover) and the effects on growth of rice cultivated in a wagner Pot Reviewed

    Ko, K. M. M,, Hirai, Y., Yamakawa, T., Inoue, E., Okayasu, T., Mitsuoka, M.

    Journal of Japanese Society of Agricultural Technology Management   27 ( 1 )   2020.1

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  • Long-term and continuous measurement of canopy photosynthesis and growth of spinach Reviewed

    Koichi Nomura, Akihiro Takada, Hirosato Kunishige, Yukio Ozaki, Takashi Okayasu, Daisuke Yasutake, Masaharu Kitano

    Environmental Control in Biology   58 ( 2 )   21 - 29   2020.1

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    To understand long-term association between canopy-scale photosynthesis and growth, we continuously and simultaneously measured the net photosynthetic rate (Ac) and leaf area index (LAI) of a spinach canopy from transplantation to harvesting. This long-term measurement was enabled by combining an open-type flux chamber method and image analysis of top-of-view canopy photographs. The photosynthetic photon flux density (PPFD) was the major determinant of Ac during a short-term period, but the change in Ac was significantly amplified by an increase in LAI during a long-term period. LAI, measured with reliable accuracy from gap fractions (projected non-leaf areas) of top-of-view photographs, increased exponentially through the growth period. These results indicate a positive feedback loop between photosynthesis and growth (i.e., the growth of leaves amplifies photosynthesis, and the amplified photosynthesis further accelerates the growth of leaves). Consequently, a linearity was found between cumulative canopy net photosynthesis (ΣAc) and LAI, implying that throughout the growth period, a fixed proportion of dry matter was partitioned to the leaves and that the leaf area was expanded in proportion to the partitioned dry matter. This linearity between ΣAc and LAI also suggests that growth of a leafy vegetable canopy can be predicted from canopy photosynthesis.

    DOI: 10.2525/ecb.58.21

  • Crop growth prediction model at vegetative phase to support the precision agriculture application in plant factory

    Aulia Rizkiana, Andri Prima Nugroho, Muhammad Abiyyu Irfan, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019 International Conference on Science and Applied Science, ICSAS 2019   2019.12

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    Plant factory is an extensive cultivation that produce vegetable under a controllable environment. The concept of Precision Agriculture has been introduced to enhance the plant factory production by monitoring of crop growth intensively. Crop growth can be estimated using a mathematical model to determine the state of the plant during the growth period. However, the application of a crop growth model in plant factory has several challenges because every plant has a specific model to be observed. The objective of this study was to construct a crop growth prediction model for vegetative development phase. The activity covers the development of mathematical model and model validation using Chili (Capsicum frutescens) as a preliminary experiment. Four samples (S1, S2, S3, S4) of Chili with age of five weeks after planting were used and measured daily for 30 days to get the actual height (cm). Three crop height observation data set (S1, S1, S3), were used to develop a mathematical model and the rest dataset was for model validation and evaluation. Linear and polynomial model were applied to obtain the appropriate prediction. The model was validated and evaluated using the Root Mean Squared Error (RMSE) and Mean Absolute Percentage Error (MAPE). As a result, Determination coefficient (R2) of the Linear model was 0.9667, and the RMSE was 2.16; The Polynomial model shows R2 0.98755, and RMSE RMSE 1.68. The result of the model that is suitable for the Chili crop during the vegetative phase is the polynomial model with error rate of 1,68%.

    DOI: 10.1063/1.5141717

  • Implementation of leaf motion monitoring system to study plant behavior with variations of the lighting interval in Capsicum annuum L.

    Siti Maghfiroh, Andri Prima Nugroho, Adetya Raya Putra, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019 International Conference on Science and Applied Science, ICSAS 2019   2019.12

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    Circadian rhythm is a biological rhythm in a plant that has a 24-hour period, which affects the plant activities, such as metabolism processes, physiology processes, and plant behavior. Generally, Circadian rhythm has two factors affecting the synchronizing the biological clock: Light and temperature cycle. In our previous studies, plant motion monitoring systems based on leaf movement have been developed to determine the circadian rhythms of a regular plant under the normal condition. However, the performance of the system to monitor the plant rhythm under abnormal conditions relating to the biological clock, lighting interval treatment, does not establish yet. The objective of this study was to implement a plant motion monitoring system to study plant behavior with 16-hour and 12-hour lighting interval treatment. The plant's motion of Chili (Capsicum annum L.) was observed in a growth chamber equipped with an infrared camera and raspberry pi, which is used to take pictures continuously at certain intervals using top projection view. Periode of circadian rhythms phase, the amplitude of the plant were analyzed and compared. As a result, plant motion monitoring system could be used to monitor the circadian rhythm on Chili (Capsicum annum L.) with the variation of lighting interval (12-h and 16-h). The amplitude of 16-hour lighting has higher and the period shift indicated late oscilation comparing the 12-hour lighting. The higher amplitude and late in oscilation is accordance with previous studies that environmental cues, such as light, can reset the clock and can also affect the rhythm output clock.

    DOI: 10.1063/1.5141715

  • Development of mobile RoboVision with stereo camera for automatic crop growth monitoring in plant factory

    Anggit Wijanarko, Andri Prima Nugroho, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019 International Conference on Science and Applied Science, ICSAS 2019   2019.12

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    Plant Factory is a large-scale vegetable production method with limited, closed, and controlled space. This system is endeavored to support the sustainability of agricultural production system by applying the concept of precision agriculture. This concept is implemented to observe plant growth effectively and efficiently. Currently, in the conventional way monitoring carried out one by one, using the computer vision technology will help accelerate plant growth monitoring in the Plant Factory. However, in the application in a Plant Factory, it requires many cameras to be used for growth monitoring for each crop to support the precise measurement. So, it is necessary to have a system that supports the mobility of the camera module inside the plant factory. The objective of this study was to design the Mobile RoboVision using the stereo camera for automatic Crop Growth Monitoring. The system consists of three modules: Stereo camera positioning system using M1 Computer Numerical Control (1000mm x 1000mm of size) equipped with x and y motor for flexible movement; Image acquisition system using Raspberry Pi B+ as microcomputer unit installed Stereo Camera standard with quad IR Illuminator and sensors; Data collection system using Cloud Storage. The camera positioning system manages the position of the camera module to stop in every crop in specified coordinate C1..n = {(x1, y1), (x2, y2), ..(xn, yn)} and capture stereo images automatically. The captured image will be managed in a data collection system using Cloud System to provide flexible and convenient access for further analysis.

    DOI: 10.1063/1.5141713

  • Design and performance evaluation of multi-camera for continuous plant motion monitoring system

    Dian Fatmawati, Andri Prima Nugroho, Arifin Widiyatmoko, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019 International Conference on Science and Applied Science, ICSAS 2019   2019.12

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    Circadian rhythm is a biological rhythm that has a period of 24 hours. Leaf movement is one of physical indicator that commonly used to detect the circadian rhythms in the plant. In its application, it is required to design a plant motion monitoring system that can work automatically and continuously to estimate the period of plant motion and quantify the circadian rhythm. Generally, a plant monitoring system uses a top view projection to monitor plant activity. To extend its functionality, the side view projection was also important to monitor the plant behavior from a horizontal point of view. The objective of this study was to design and evaluate the performance of the Top and Side view projection as multi-camera for continuous plant motion monitoring system. The system composed of two IR LED cameras with Top and Side view projection and connected to the microcomputer (Raspberry Pi3 B+). The data were analyzed by Optical Flow method using OpenCV Library applying Shi-Tomasi and Lucas Kanade. Estimation of circadian rhythms was using the FFT (Fast Fourier Transform) method. The multi-camera system was evaluated to monitor the motion of Chili (Capsicum annum L.) by observing the time series of circadian rhythm, Period, Amplitude, and Phase. As a result, the system could be used to monitor the circadian rhythm for both Top and Side view projection. The Frequency and Period have the same value 0,00001157 and 24-hour. The Top view projection has higher amplitude means, for the same object motion it could represent clear motion.

    DOI: 10.1063/1.5141716

  • Appropriate adaptation of precision agriculture technology in open field cultivation in tropics Reviewed

    A. P. Nugroho, L. Sutiarso, T. Okayasu

    3rd International Symposium on Agricultural and Biosystem Engineering, ISABE 2019 IOP Conference Series: Earth and Environmental Science   355 ( 1 )   2019.11

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    Tropical agriculture production is profoundly affected by the uncontrollable environmental condition. To obtain good agricultural products, farmers manage their farm to fit with the variation of weather and season. The farming managements are generally determined according to farmers personal knowledge, gained from the long-term experience from preceding years. Nowadays, climate change intensifies unpredictable weather and its unstable distribution. Consequently, conventional farming management considering the climate change factor should be considered. The farming management should face the dynamic change of weather condition as well as improve the farmer's knowledge towards the implementation of precision agriculture approach. The objective of this study was to introduce an appropriate adaptation of precision agriculture technology by the utilization of information and communication technology (ICT) to improve conventional farming management in tropical agriculture production. The framework is implementing cloud technology as a backbone, which can be extended with various knowledge such as data science, plant biology, plant physiology, biophysical, and biomechanical. The appropriate adaptation of precision agriculture represented by the improvement of the conventional farming method using the technological aspect by fostering their knowledge to adopt modern agriculture empowered with Information and Communication Technology (ICT). Learning process from data-information-knowledge on the application of precision agriculture will be documented at the PA Knowledge Management System.

    DOI: 10.1088/1755-1315/355/1/012028

  • 下負荷面モデルを用いた繰返し載荷を受けた道床バラストの弾塑性変形挙動の検討 Reviewed

    木次谷 一平, 伊藤壱記, 中村貴久, 石川達也, 岡安崇史

    土木学会論文集E1(舗装工学)   2019.11

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  • Development of environmental monitoring systems based on LoRa with cloud integration for rural area Reviewed

    M. S. Hidayat, A. P. Nugroho, L. Sutiarso, T. Okayasu

    3rd International Symposium on Agricultural and Biosystem Engineering, ISABE 2019 IOP Conference Series: Earth and Environmental Science   355 ( 1 )   2019.11

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    Wireless Sensor Network (WSN) is widely used in field environmental monitoring recently, because of its ease of use and being able to simplify the complexity installation in real application. Indonesia is an agricultural country with more than 16.5 million of farming land, most of the farming land is located in a rural area. The problems on the implementation of IoT-based environmental monitoring system in a rural area is the limited signal and energy. Accordingly, the objective of this study was to develop an Environmental Monitoring System based on LoRa in a rural area with the implementation of the Local Management Subsystem (LMS) and Global Management Subsystem (GMS) framework to optimize the existing development of the Environmental Monitoring System with focused on optimum distance by measuring the RSSI, signal strength and packet loss. The research was conducted in Bulaksumur Universitas Gadjah Mada, Yogyakarta, with four zones and various obstacles. As the result, Zone D with line of sight was the best result for getting the affordable distance for data transmission. This Zone can reach over 800 m distance with only 20% packet loss.

    DOI: 10.1088/1755-1315/355/1/012010

  • dSPACE based Hardware in the loop Testing Platform for Powertrain Management Unit of Electric Tractor International journal

    Wu, ZB., Xie, B., Li, Z., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y.

    Journal of the Faculty of Agriculture Kyushu University   2019.10

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  • dSPACE based Hardware in the loop Testing Platform for Powertrain Management Unit of Electric Tractor

    Wu, Z., Xie, B., Li, Z., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y.

    J. Faculty of Agriculture, Kyushu University   64 ( 2 )   2019.9

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  • Design and Experiment of a Semiphysical Simulation Platform of the Lifting System of a Tractor with an Adaptive Function

    Li, Z., Mitsuoka, N., Inoue, E., Okayasu, T., Hirai, Y., Liu, J.

    J. Faculty of Agriculture, Kyushu University   64 ( 2 )   2019.9

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  • Modelling and verification of driving torque management for electric tractor Dual-mode driving intention interpretation with torque demand restriction Reviewed

    Zhongbin Wu, Bin Xie, Zhen Li, Ruijuan Chi, Zhiyong Ren, Yuefeng Du, Eiji Inoue, Mitsuoka Muneshi, Takashi Okayasu, Hirai Yasumaru

    Biosystems Engineering   182   65 - 83   2019.6

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    A torque management model (TMM) focused on the close matching of driving requirements and operating conditions for electric tractors was developed. The TMM used the accelerator pedal output signal to establish the torque demand to adapt for two conditions – field traction and road driving. Further, the TMM uses the limitations of a time-based torque ramp, maximum motor torque at the current speed, and battery state of charge. To verify the performance of the TMM, a tractor control unit (TCU) to support the TMM was designed, and a test bench comprising both driving and loading devices was built. The bench provided the TMM/TCU with the necessary operating states needed as inputs to determine the torque demand. Experiments were performed under five specific manoeuvring cases. The test results showed that the TMM was capable of accurately converting pedal manipulations into torque demands both in the field traction and road driving conditions. The torque changes during testing were properly smoothed by limiting the rising and falling time of the target torque, which was favourable for eliminating impacts due to torque fluctuations. Overloading operations that would occur in case of excessive torque request were avoided by the torque capacity limitation both in the field traction and road acceleration tests. When the bus voltage was deliberately adjusted below the alarm threshold, the TMM could scale down the torque demand in real time according to the deviation between the actual voltage and the threshold, and therefore, it always kept the voltage above the safe level.

    DOI: 10.1016/j.biosystemseng.2019.04.002

  • Modelling and verification of driving torque management for electric tractor Dual-mode driving intention interpretation with torque demand restriction Reviewed

    Zhongbin Wu, Bin Xie, Zhen Li, Ruijuan Chi, Zhiyong Ren, Yuefeng Du, Eiji Inoue, Muneshi Mitsuoka, Takashi Okayasu, Yasumaru Hirai

    Biosystems Engineering   182   65 - 83   2019.6

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    A torque management model (TMM) focused on the close matching of driving requirements and operating conditions for electric tractors was developed. The TMM used the accelerator pedal output signal to establish the torque demand to adapt for two conditions – field traction and road driving. Further, the TMM uses the limitations of a time-based torque ramp, maximum motor torque at the current speed, and battery state of charge. To verify the performance of the TMM, a tractor control unit (TCU) to support the TMM was designed, and a test bench comprising both driving and loading devices was built. The bench provided the TMM/TCU with the necessary operating states needed as inputs to determine the torque demand. Experiments were performed under five specific manoeuvring cases. The test results showed that the TMM was capable of accurately converting pedal manipulations into torque demands both in the field traction and road driving conditions. The torque changes during testing were properly smoothed by limiting the rising and falling time of the target torque, which was favourable for eliminating impacts due to torque fluctuations. Overloading operations that would occur in case of excessive torque request were avoided by the torque capacity limitation both in the field traction and road acceleration tests. When the bus voltage was deliberately adjusted below the alarm threshold, the TMM could scale down the torque demand in real time according to the deviation between the actual voltage and the threshold, and therefore, it always kept the voltage above the safe level.

    DOI: 10.1016/j.biosystemseng.2019.04.002

  • Variable fertilizer recommendation for grass production by image–based growth status

    Kabir, M., Nur, S., Chung, S., Jang, B., Kim, Y., Lee, G., Lee, K., Okayasu, T.

    J. Faculty of Agriculture, Kyushu University   64 ( 1 )   2019.2

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  • Behavior Simulation of Tractor Driven on Slopes and Undulating Roads

    Choe, J.S., Akimune, H., Shin, S., Inoue, E., Mitsuoka, M., Okayasu, T., Hirai, Y.

    J. Faculty of Agriculture, Kyushu University   64 ( 1 )   2019.2

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  • Testing the Tractor Behavior Simulation with Experimental Driving of a Model Tractor

    Choe, J.S., Akimune, H., Shin, S., Inoue, E., Mitsuoka, M., Okayasu, T., Hirai, Y., Inoure, E.

    J. Faculty of Agriculture, Kyushu University   64 ( 1 )   2019.2

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  • Integrated contextual learning environments with sensor network for crop cultivation education Concept and design

    Rin Ichiro Taniguchi, Daisaku Arita, Atsushi Shimada, Masanori Yamada, Yoshiko Goda, Ryota Yamamoto, Takashi Okayasu

    16th International Conference on Cognition and Exploratory Learning in Digital Age, CELDA 2019 16th International Conference on Cognition and Exploratory Learning in Digital Age, CELDA 2019   242 - 248   2019.1

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    This paper presents an outline of our project, in which we develop an observation framework for integrating lecture and contextual learning in the field of crop cultivation. Specifically, we will use multi sensing of learners' activities in classrooms, and contextual learning in fieldwork, farm planting, and farming environments. The motivation for our project is twofold: First, crop cultivation provides a powerful illustration of educational technology. It requires both explicit knowledge (from lectures) and implicit knowledge (from contextual learning outside of class). Second, from a practical viewpoint, the number of Japanese farmers is shrinking due to low income and to aging population. Thus, in order to maintain crop yields, farming skills must be transferred efficiently to novice farm workers. Herein, the major features of our framework will be described.

  • Yield visualization based on farm work information measured by smart devices Reviewed

    Yoshiki Hashimoto, Daisaku Arita, Atsushi Shimada, Takashi Yoshinaga, Takashi Okayasu, Hideaki Uchiyama, Rin-Ichiro Taniguchi

    Sensors (Switzerland)   18 ( 11 )   2018.11

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    This paper proposes a new approach to visualizing spatial variation of plant status in a tomato greenhouse based on farm work information operated by laborers. Farm work information consists of a farm laborer’s position and action. A farm laborer’s position is estimated based on radio wave strength measured by using a smartphone carried by the farm laborer and Bluetooth beacons placed in the greenhouse. A farm laborer’s action is recognized based on motion data measured by using smartwatches worn on both wrists of the farm laborer. As experiment, harvesting information operated by one farm laborer in a part of a tomato greenhouse is obtained, and the spatial distribution of yields in the experimental field, called a harvesting map, is visualized. The mean absolute error of the number of harvested tomatoes in each small section of the experimental field is 0.35. An interview with the farm manager shows that the harvesting map is useful for intuitively grasping the states of the greenhouse.

    DOI: 10.3390/s18113906

  • Yield visualization based on farm work information measured by smart devices Reviewed

    Yoshiki Hashimoto, Daisaku Arita, Atsushi Shimada, Takashi Yoshinaga, Takashi Okayasu, Hideaki Uchiyama, Rin Ichiro Taniguchi

    Sensors (Switzerland)   18 ( 11 )   2018.11

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    This paper proposes a new approach to visualizing spatial variation of plant status in a tomato greenhouse based on farm work information operated by laborers. Farm work information consists of a farm laborer’s position and action. A farm laborer’s position is estimated based on radio wave strength measured by using a smartphone carried by the farm laborer and Bluetooth beacons placed in the greenhouse. A farm laborer’s action is recognized based on motion data measured by using smartwatches worn on both wrists of the farm laborer. As experiment, harvesting information operated by one farm laborer in a part of a tomato greenhouse is obtained, and the spatial distribution of yields in the experimental field, called a harvesting map, is visualized. The mean absolute error of the number of harvested tomatoes in each small section of the experimental field is 0.35. An interview with the farm manager shows that the harvesting map is useful for intuitively grasping the states of the greenhouse.

    DOI: 10.3390/s18113906

  • Relationships between Mass and Porosity of Rough Rice Piled in a Combine Grain Tank Reviewed International journal

    Yoshizak, R., Hirai, Y., Mitsuoka, M., Inagaki, S., Inoue, E., Okayasu, T.

    Proceedings of the 9th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)   2018.5

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  • Effects of different application methods of fertilizer and manure on soil chemical properties and yield in whole crop rice cultivation Reviewed

    Borin Khem, Hirai Yasumaru, Takeo Yamakawa, Yuki Mori, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Soil Science and Plant Nutrition   64 ( 3 )   406 - 414   2018.5

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    Whole crop rice (WCR) is expected to establish a cultivation method using manure produced from animal wastes. Meanwhile, application methods of fertilizer and manure in the WCR cultivation are affected by availability of manure, available time for its application, and field drainage, and low market price of WCR. This raises concerns about soil fertility deterioration and yield reduction in the WCR cultivation. The objectives of this study were to investigate how different application methods of fertilizer and manure affected soil chemical properties and yield in the WCR cultivation. Field surveys were conducted in 2013 and 2014 at 10 fields cultivated by five different farmers in the Itoshima region, Fukuoka Prefecture, Japan. The surveyed fields included two application methods of manure (M) alone and chemical fertilizer (CF) alone. Clay plus silt content was significantly correlated with total nitrogen (TN), total phosphorus (TP), and exchangeable potassium (Exch. K), which indicated that soil texture partly contributed to the variations of these soil chemical properties. Meanwhile, clear gaps of TN, TP, Exch. K, K saturation degree, and available N between CF and M at around 40% of clay plus silt content strongly suggested that manure application contributed to increases in the soil chemical properties. Yearly differences of available N had relatively large negative values in CF fields. This result suggested a possible decrease in mineralizable part of soil TN in the WCR cultivation with CF alone, which needs to be clarified through long-term study. Significant relationships between potential N supply and straw weight (r = 0.698, p < 0.05 for 2013; r = 0.873, p < 0.01 for 2014) or yield of whole crop (r = 0.852, p < 0.01 for 2014) indicated that N mineralized from soil, which was enhanced by manure application, increased straw weight, resulting in an increase in yield of whole crop. However, excessive amounts of manure applied in surveyed fields can cause groundwater and surface water pollution. Thus, nutrient balances in a paddy field need to be analyzed further to determine an appropriate application amount of manure.

    DOI: 10.1080/00380768.2018.1443399

  • Investigation of Terrain Slope Information and Tractor Driving Simulation on Reconstructed Ground Reviewed International journal

    Shin, S., Inoue, E., Mitsuoka, M., Okayasu, T., Hirai, Y., Matsui, M.

    Proceedings of the 9th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)   2018.5

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  • Analysis of the load of a transplanter PTO shaft based on the planting distance Reviewed

    Wan Soo Kim, Yeon Soo Kim, Yong Joo Kim, Chang Hyun Choi, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   63 ( 1 )   97 - 102   2018.2

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    The purpose of this study was to analyze the load of a transplanter PTO shaft during transplanting operations with respect to planting distances. To measure the loads on the PTO shaft of a transplanter, a load measurement system was constructed using a torque sensor and an embedded system. Field experiments were conducted at planting distances of 26,35,43, and 80 cm in a field with similar soil conditions. The load measured was converted from the time domain to the frequency domain using the rain-flow counting and SWT methods. The damage level of the transplanter to the working load with respect to the planting distance was calculated using Miner's rule, and the damage level was represented by ratio of the damage sum to the smallest damage sum among the planting distances. The damage level was increased by 199,493, and 708% when the planting distance gradually decreased from 80 to 43,35, and 26 cm, respectively. The results show that a shorter planting distance has a stronger effect on the transplanter PTO shaft than a longer planting distance. Therefore, it is known that transplanter PTO shafts should be designed while considering working loads with respect to planting distance.

  • Performance analysis for a card cleaner type separating system of pepper harvester Reviewed

    Yeon Ju Jo, Young Sun Kang, Ju Seok Nam, Jung Seob Choe, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   63 ( 1 )   103 - 111   2018.2

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    This study conducted a factorial experiment with an experimental bench to analyze the separation performance of a card cleaner type separating system of pepper harvesters. The factors used for this study were the card arrangement (inline and staggered), slope angle (5° and 15°), and rotational speed (35, 50, and 65 rpm) of the card cleaner. The separation efficiency of peppers was influenced by the slope and rotational speed of the card cleaner in both types of card arrangement. In the inline arrangement, the mixing ratio of foreign materials was influenced by slope angle but not influenced by the rotational speed of the card cleaner. In the staggered arrangement, the mixing ratio of foreign materials was influenced by slope angle and the rotational speed of the card cleaner. The high separation efficiency in the staggered arrangement was obtained under the conditions of a slope of 5° and a rotational speed of 50 rpm. However, the mixing ratio of foreign materials was also high in this condition. The high separation efficiency in the inline arrangement was obtained under the conditions of a slope of 15° and a rotational speed of 50 rpm, and the mixing ratio of foreign materials was relatively low in this condition. Thus, the inline arrangement with a slope angle of 15°was recommended for a separating system of self-propelled pepper harvesters.

  • Identification of configurational effectiveness on improvement of tractor stability on uneven roads Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru, Zhongxiang Zhu, Zhenghe Song, Enrong Mao

    Journal of the Faculty of Agriculture, Kyushu University   63 ( 1 )   113 - 117   2018.2

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    It has been identified that tractor stability can be affected by multiple factors, including configurational and environmental parameters. To improve tractor stability and enhance the resistance of the tractorimplement system to exterior disturbs, three tractor physical parameters were selected as the key control factors to examine their statistical significances and to find out the corresponding desired levels. In this study, a scaled experimental system consisting of a scaled tractor-implement model, force-sensing system, random road surfaces was developed. The tractor was operated to travel forward passing over two classes of rough road. Various tractor configuration patterns were assigned following the L27 orthogonal array according to the Taguchi design of experiment. Adopting the concept of lateral-load transfer ratio, the output voltage signals of the force sensing resistors were calculated for the stability indexes basing on tractor front and rear axles. Results showed that the type of tractor front tire and the ballast weight significantly varied the ground contact condition of the front tires, while the rear track width of the tractor predominantly determined the rear-axle-based vehicle stability.

  • Characteristics of low-light LED as supplemental lighting and its effects on leaf gas exchange in strawberry Reviewed

    Nur Iman Muztahidin, Daisuke Yasutake, Kota Hidaka, Yuta Miyoshi, Ayami Yoneda, Koyo Nagao, Kitano Masaharu, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   63 ( 1 )   139 - 142   2018.2

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    The aim of this study was to analyze the fundamental lighting characteristics (spectrum distribution and light intensity) of a low-light LED unit and its effect on gas exchange in strawberry leaves. This unit was newly developed to provide low-cost supplemental lighting for greenhouses. The low-light LED unit was made using 24 LED module chips, each of which were 1 m in length and 43.2 W. The electricity consumption of this unit was only 55% of that of the high-light LED previously reported by Hidaka et al. (2013). The spectrum characteristics of low-light LED were measured using a portable spectro-radiometer. The photosynthetic photon flux density (PPFD) was measured using a photon sensor, and its distribution was measured at five different heights from a reference plane (110 cm x 150 cm). Gas exchange in strawberry leaves under low-light LED (Low LED treatment) supplemental lighting and no lighting (Control treatment) were measured using a leaf chamber system. The results demonstrated that the spectrum distribution patterns of the low-light LED and the high-light LED were similar; we found that the relative light intensity of both LEDs peaked once near a wavelength of 450 nm and again near a wavelength of 550 nm. The PPFD and its horizontal distribution showed that, as the height of the light source increased, the PPFD and lighting regions decreased and increased, respectively. On the other hand, as the height of 20 cm, PPFD under supplemental lighting with the low-light LED increased by 2.1 times than natural condition. As a result, stomatal conductance and transpiration rate increased by 1.5 times and 1.2 times, respectively; further photosynthetic rate increased by 2.2 times. Thus, the low-light LED was demonstrated to have suitable wavelength for crop production. Furthermore, applying supplemental lighting with the low-light LED significantly improved light intensity and accelerated photosynthesis in strawberry.

  • Development of program library using an open-source hardware for implementation of low-cost greenhouse environmental control system Reviewed

    Ken ichiro Yasuba, Hidehito Kurosaki, Takehiko Hoshi, Takashi Okayasu, Yoshiyuki Tanaka, Tanjuro Goto, Yuichi Yoshida

    Environmental Control in Biology   56 ( 3 )   107 - 112   2018.1

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    A program library for use on open-source hardware was developed in order to construct a low-cost environmental control system for greenhouses. The library facilitated the development of environmental sensing and control devices that conform to the protocols of the Ubiquitous Environment Control System (UECS). The open-source hardware used was the “Arduino Ethernet” and the “Arduino Mega 2560 with Ethernet Shield” microcontroller boards. UECS is a system for controlling greenhouse environments that communicates information via a local area network, and devices utilizing the library that we developed can perform the UECS defined communication tasks automatically. With the help of this library, device developers no longer need to program the communications aspects of the device and can concentrate on programming setting and control logic of the device. The library occupies about 29 kilobytes of the read only memory area of the target board. The library and associated open-source microcontroller boards are powerful tools for developing low-cost environmental control systems.

    DOI: 10.2525/ecb.56.107

  • Sensing technologies for advanced smart agricultural systems Reviewed International journal

    Uchiyama, H., Sakurai, S., Hashimoto, Y., Hanasaki, A., Arita, D., Okayasu, T., Shimada, A., Taniguchi R.

    11th International Conference on Sensing Technology (ICST)   2017.12

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    DOI: 10.1109/ICSensT.2017.8304451

  • An Easy-to-Setup 3D Phenotyping Platform for KOMATSUNA Dataset Reviewed International journal

    Uchiyama, H., Sakurai, S., Mishima, M., Arita, D., Okayasu, T., Shimada, A., Taniguchi, R.

    2017 IEEE International Conference on Computer Vision Workshops (ICCVW)   2017.10

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    DOI: 10.1109/ICCVW.2017.239

  • Measurement accuracy of the area of combine-harvested field sections corresponding to a truckload of grain received at a grain elevator Reviewed

    Hirai Yasumaru, K. Tanaka, T. Nakanishi, T. Shikanai, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Engineering in Agriculture, Environment and Food   10 ( 4 )   272 - 281   2017.10

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    Measuring the area of combine-harvested field sections corresponding to a truckload of grain received at a grain elevator (LHA: load harvest area) allows the estimation of brown rice yield. The objective of this study was to evaluate the accuracy of LHA measured based on combine movement traces when the traces were recorded by a GPS or a GPS + Quasi-Zenith Satellite System (QZSS) receiver. For the measurements using a GPS receiver, the mean and standard deviation of relative errors of LHA were 4.7% and 8.1%. The center of the relative error distribution shifted toward positive because positioning errors of a GPS receiver shifted outer edges of harvested sections outward and resulted in measuring larger harvested area than a true value. For the measurements using a GPS + QZSS receiver, the mean and standard deviation of relative errors of LHA were 0.5% and 4.8%. The center of the relative error distribution was around 0% for its better positioning accuracy. The relative errors of LHA tended to be large when an LHA was measured from a field section where only the outer-part of a field is harvested or several small harvested sections. These cases of LHA measurements increased the sum of the perimeter of harvested sections and resulted in deteriorating the measurement accuracy. This result indicated that measurement accuracy of LHA can be further improved by correcting error, which can be estimated based on positioning errors and the perimeter of harvested sections.

    DOI: 10.1016/j.eaef.2017.05.001

  • Judging the abnormalities of agricultural machinery by using Mahalanobis' distance Reviewed

    Jung Seob Choe, Kohei Takata, Eiji Inoue, Tae Wook Kim, Mitsuoka Muneshi, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   62 ( 2 )   469 - 476   2017.9

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    This study calculated the Mahalanobis' distance, which is a multidimensional space distance with correlations, from the time-series data of 3-axis translational acceleration and 3-axis rotational angular speed, and examined whether this could be used in judging the abnormalities of the agricultural machineries. As the result, using the Mahalanobis' distance to determine the abnormality of the data was not possible for the changes in not-so-big behaviors, such as turning and temporary stop, but determining the abnormality of the data using the Mahalanobis' distance was clearly possible for sudden changes to the operating status of the equipment, such as a roll over and passing obstacles through an experiment using the model car. We hypothesized in the beginning that the distribution of the Mahalanobis' distance at the signal space could be separated with the distribution of the Mahalanobis' distance at the unit space. However, unless there is a large-scale change to the behavior, such as a roll over, etc., complete separation is difficult in reality, and we determined realistically that conducting the abnormality determination from the significant difference viewpoint by placing a threshold value to the normalized distribution of the Mahalanobis' distance at the unit space is possible.

  • Sensing and visualization in agriculture with affordable smart devices

    Takashi Okayasu, Andri Prima Nugroho, Daisaku Arita, Takashi Yoshinaga, Yoshiki Hashimoto, Rin ichiro Tachiguchi

    Smart Sensors at the IoT Frontier   299 - 325   2017.5

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    DOI: 10.1007/978-3-319-55345-0_12

  • Water leakage control by using vibratory roller on a dry-seeded rice field in southwestern Japan Reviewed

    Koichiro Fukami, Toshifumi Mukunoki, Keiko Nakano, Naoki Matsuo, Takashi Okayasu

    Soil and Tillage Research   166   138 - 146   2017.3

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    Dry-seeded rice cultivation is an effective low-cost cultivation method in Japan, but preventing water leakage from cultivated rice fields remains a challenge. Here we assessed the efficiency of using a vibratory roller in a dry-seeded rice field for preventing water leakage. The tests were conducted at two different soil-water contents (WC: 32 and 39%) before roller compaction. We measured the acceleration response of the vibrating roller by using a micro-electro mechanical system (MEMS) accelerometer, and we determined the volume of water leakage from the field by using a rapid leakage capacity tester. We analyzed the changes in the soil structure by using a micro-focused X-ray CT scanner. We analyzed all of the resulting data to identify any correlation. We observed that water leakage from the field was sufficiently prevented when prior to roller compaction, soil moisture content was 39%. The shape of the soil pores that could efficiently prevent water leakage was flatter than that of the inefficiently compacted soil. In addition, the total porosity decreased, but the small-sized pore fraction increased. The vibration acceleration of the roller significantly increased with the decrease in the volume of water leakage. Thus, in addition to assessing the efficiency of vibratory rollers in reducing water leakage, our data suggest that it is to some extent possible to estimate the water leakage prevention effect from the acceleration response of a vibrating roller.

    DOI: 10.1016/j.still.2016.09.011

  • Chemical Free Vegetable Cultivation and Outcomes in Winter Season in Bangladesh A case study on BOP farmers in five districts

    Mansur Ahmed, Akinori Ozaki, Dipok K. Choudhury, Kazuo Ogata, Shoichi Ito, Ikuo Miyajima, Ashir Ahmed, Takashi Okayasu, Amin Nayeen Al

    Journal of the Faculty of Agriculture, Kyushu University   62 ( 1 )   255 - 262   2017.2

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    In Bangladesh the demand of chemical free vegetables is increasing due to health hazards of conventional vegetables. However, the awareness of the farmers and supply of such vegetables are not sufficient. In this research, therefore, we focused on why agrochemical free vegetable production including marketing has been underdeveloped in Bangladesh as a growing business compared to conventional vegetable production. In order to collect the information, which can argue these reality of chemical free vegetable production, distribution and marketing in Bangladesh, we especially focused on widely cultivated winter vegetables such as cabbage, cauliflower and tomato. Data were collected targeting the activities of SENSE (Support to establish a new society of BOP farmers by using the power of ICT) project regarding production and marketing. The results indicated that the production of chemical free cauliflower and tomato were substandard compare to the cabbage. The reasons for getting substandard production were unavailability of proper production inputs such as appropriate organic pesticides, quality compost and lack of timely execution of the farming activities. Moreover, the selling results indicated that farmers got higher income from tomato compare to cabbage and cauliflower. Additionally, revenue (per kg) of the products sold in Dhaka market was more than the local markets. The differences of revenue (per kg) between Dhaka and locally sold cabbage, cauliflower and tomato were BDT 6.02, BDT 6.63 and BDT 10.22, respectively. However, the average selling percentage of cabbage, cauliflower and tomato in Dhaka market (10.06%) and local market (89.94%) indicated that chemical free vegetable production had high potential by selling more products in Dhaka market for high income generation of the resource poor farmers.

  • Development of a parallel hybrid system for agricultural tractors Reviewed

    Dae Hyun Lee, Yong Joo Kim, Chang Hyun Choi, Sun Ok Chung, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   62 ( 1 )   137 - 144   2017.2

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    The purpose of this study was to develop parallel hybrid tractor. The hybrid tractor was constructed by adding major components of a hybrid driving system on a tractor. The tractor has 71 kW engine power and the major components included an EMG (electric motor/generator), an inverter, batteries, a battery management system (BMS), and a hybrid control unit (HCU). The hybrid tractor had three control modes: idle, power assist, and battery charge and it were determined by the workload which estimated by measuring engine rotational speed. Performance of the hybrid tractor was evaluated through the field tests of plowing. Performance tests were conducted by comparing the hybrid tractor and the conventional one, and one hybrid tractor was used for the experiment. The hybrid tractor used the hybrid system for the control of EMG, and the conventional tractor was driven by the engine not using the hybrid system. Performances of the hybrid tractor and the conventional tractor were similar at M2 which is low speed condition and it could work with low load, but the performance of the hybrid tractor was better than one of the conventional tractor at higher load condition (M3, M4). Fuel efficiency of the hybrid tractor at M2 was similar with the one of the conventional tractor, but it was lower at M3 and M4 than the one of the conventional tractor by 74%. Considering all results of this study, the developed parallel hybrid tractor is feasible to improve plowing performance of the conventional tractor.

  • Chemical free vegetable cultivation and outcomes in winter season in Bangladesh A case study on BOP farmers in five districts Reviewed

    Mansur Ahmed, Akinori Ozaki, Dipok K. Choudhury, Kazuo Ogata, Shoichi Ito, Ikuo Miyajima, Ashir Uddin Ahmed, Takashi Okayasu, Nayeen Aamin

    Journal of the Faculty of Agriculture, Kyushu University   62 ( 1 )   255 - 262   2017.2

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    In Bangladesh the demand of chemical free vegetables is increasing due to health hazards of conventional vegetables. However, the awareness of the farmers and supply of such vegetables are not sufficient. In this research, therefore, we focused on why agrochemical free vegetable production including marketing has been underdeveloped in Bangladesh as a growing business compared to conventional vegetable production. In order to collect the information, which can argue these reality of chemical free vegetable production, distribution and marketing in Bangladesh, we especially focused on widely cultivated winter vegetables such as cabbage, cauliflower and tomato. Data were collected targeting the activities of SENSE (Support to establish a new society of BOP farmers by using the power of ICT) project regarding production and marketing. The results indicated that the production of chemical free cauliflower and tomato were substandard compare to the cabbage. The reasons for getting substandard production were unavailability of proper production inputs such as appropriate organic pesticides, quality compost and lack of timely execution of the farming activities. Moreover, the selling results indicated that farmers got higher income from tomato compare to cabbage and cauliflower. Additionally, revenue (per kg) of the products sold in Dhaka market was more than the local markets. The differences of revenue (per kg) between Dhaka and locally sold cabbage, cauliflower and tomato were BDT 6.02, BDT 6.63 and BDT 10.22, respectively. However, the average selling percentage of cabbage, cauliflower and tomato in Dhaka market (10.06%) and local market (89.94%) indicated that chemical free vegetable production had high potential by selling more products in Dhaka market for high income generation of the resource poor farmers.

  • Application of the constant soil temperature layer for energy-saving control in the local environment of greenhouse crops II. Application to strawberry cultivation during the winter season Reviewed

    Yuta Miyoshi, Kota Hidaka, Takashi Okayasu, Daisuke Yasutake, Kitano Masaharu

    Environmental Control in Biology   55 ( 1 )   37 - 40   2017.1

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    For stable year-round production of greenhouse crops with sustainability and high profitability, it is essential to establish a system that encompasses energy-saving and year-round environmental control via the application of renewable energy resources. One such renewable energy resource is the constant soil temperature layer, which is widespread and easily accessible in agricultural fields. However, owing to the low heat capacity and conductivity of media such as soil and air, heat exchange with the constant soil temperature layer has been considered insufficient for temperature control of the entire air volume inside a greenhouse. Therefore, we utilized a novel local temperature control system based on heat exchange between the constant soil temperature layer and the ambient air surrounding greenhouse crops. In the present study, we applied this system to the elevated bed system of strawberry crops with no-heating culture during the winter season. The system, that control the ambient air temperature of strawberry crops, increased fruits yield compared with no-heating, and was estimated 45% reduction of heating load to maintain 8°C or more.

    DOI: 10.2525/ecb.55.37

  • Effects of local CO2 enrichment on strawberry cultivation during the winter season Reviewed

    Yuta Miyoshi, Kota Hidaka, Takashi Okayasu, Daisuke Yasutake, Kitano Masaharu

    Environmental Control in Biology   55 ( 4 )   165 - 170   2017.1

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    In strawberry production, carbon dioxide (CO2) enrichment is widely used to promote crop photosynthesis and to improve growth and yield of strawberry fruits. However, a standard CO2 enrichment method has not been established clearly. For sustainable strawberry production with high profitability, it is essential to establish an efficient system for CO2 enrichment. Therefore, in this study, we newly propose a local CO2 enrichment system. The system enriches CO2 only ambient to strawberry crops, not a whole greenhouse, and thereby enables efficient control of CO2 concentration. We applied this system in a strawberry cultivation greenhouse with ventilating windows and examined the performance of system. During the daytime on clear days with opened greenhouse ventilation windows, the proposed system stabilized the ambient CO2 concentration to strawberry crops at 800 ppm. Furthermore, when the day after CO2 enrichment was begun, strawberry crop photosynthesis and photosynthate translocation from source leaves were promoted as the effects of short-term CO2 enrichment. Nevertheless, the yields and quality of fruits was not affected by the system. It is considered that long-term CO2 enrichment thickened source leaves and thereby caused down-regulation of photosynthesis. Further consideration will be needed on effect of long-term CO2 enrichment on physiological function of crops.

    DOI: 10.2525/ecb.55.165

  • Dynamics of photosynthate loading in strawberries affected by light condition on source leaves Reviewed

    Yuta Miyoshi, Tomomi Hidaka, Kota Hidaka, Takashi Okayasu, Daisuke Yasutake, Kitano Masaharu

    Environmental Control in Biology   55 ( 1 )   53 - 58   2017.1

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    In greenhouse production of strawberries (Fragaria×ananassa×Duch.) during winter season in Japan, unsuitable climate condition (low solar radiation, low temperature, etc.) for strawberry growth causes serious problems such as yield depression and low quality of fruits. For sustainable production with high profitability, it is keenly desired to establish a system for efficient environmental control based on physiological functions of crops. Translocation of photosynthate from leaves to fruits is a major physiological determinant for size and sugar content of strawberries. It is therefore essential to clarify the response of photosynthate loading to surrounding environment. In this study, we focused on light condition which strongly influences the photosynthesis, and analyzed effects of irradiation on dynamics of photosynthate loading. Furthermore, aiming at the estimation of dynamics of photostnthate loading in cultivation field, we simulated daily amount of photosynthate loading by kinetic model using a saturable Michaelis-Menten component in combination with an unsaturable component obeying first-order kinetics.

    DOI: 10.2525/ecb.55.53

  • Parameter sensitivity for tractor lateral stability against Phase I overturn on random road surfaces Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru, Zhongxiang Zhu

    Biosystems Engineering   150   10 - 23   2016.10

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    Statistics show that lateral overturns are the most frequent fatal accidents involving tractors. There is thus much research interest in improving tractor lateral stability. Previous research has discovered the effects of various factors on tractor dynamic responses. While these factors have been analysed separately, their relative significance with respect to other factors remain uncertain. Furthermore, the practical limits of what operators can do have not been considered. The present study assumed a possible case that a tractor operator has several spare tyres of different types and service condition. Additionally, the ballast weight, track width, and implement position can usually be controlled before operation. A scale model tractor was thus developed allowing changes to these factors. The model tractor was designated to pass over typical farming road surfaces. Moreover, the tractor lateral stability was evaluated in terms of the roll angle, lateral-load transfer ratio, and Phase I overturn index. Employing the Taguchi method, we arranged experiments and assessed the applicability of the three kinds of indexes regarding tractor Phase I overturn. Results revealed that the roll angle did not well reflect the initiations of overturns. Compared with the lateral-load transfer ratio, the Phase I overturn index had more convincing factorial effects on tractor stability. Further investigation of the suggested tractor configuration supported this conclusion by comparing predicted and experimental results. In practical cases, this approach may provide a reference for engineers to help operators improve driving safety with limited spare parts.

    DOI: 10.1016/j.biosystemseng.2016.07.004

  • Sensor comparison for grass growth estimation Reviewed

    Md Shaha Nur Kabir, Sun Ok Chung, Yong Joo Kim, Geung Joo Lee, Seung Hwa Yu, Kyeong Hwan Lee, Takashi Okayasu, Eiji Inoue

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 2 )   367 - 374   2016.9

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    Precision agriculture has been implemented in various cultivation operations for various crops. Recently, autonomous mower tractor with variable rate fertilization has been tried. Variable rate fertilization requires quantification of grass growth level. Objective of this study was to compare the performance of potential sensors under different growth levels and sensor operation conditions. A CCD camera, an ultrasonic module, and an optical reflectance sensor (i.e., Crop Circle) were tested at fields with different grass growth levels. Effects of sensor mounting height and angle were investigated. Effects of vehicle (i.e., mower tractor) vibration and traveling were also investigated: under static, vibration and no traveling, and vibration with traveling conditions. Results showed that sensor mounting height had a little effect on the sensor performance, and grass growth level was successfully quantified. Camera angle of 90° showed the best performance with less noise. The ultrasonic sensor could work with less deviation under static condition, whereas, CCD camera proved the applicability under all operating conditions. Operation condition of the optical reflectance sensor showed a little effect on the grass growth detection results. This study would provide information useful for automated grass growth mapping and variable fertilization recommendation.

  • Transport performance simulation of separating system for self-propelled peanut harvester using edem software Reviewed

    Je Lim, Myoung Ho Kim, Seong Min Kim, Jung Seob Choe, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 2 )   361 - 365   2016.9

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    This study evaluated a DEM (Discrete Element Method) model through test results and analysis results for the simulation of the conveying performance of the separating system in a peanut harvester. With the validated DEM model, analysis under three conditions of slope angle of separating system compare with horizon (-7°, 0°, and 7°) was also conducted to examine the conveying performance. From the comparison between the test results and simulation results, the conveying performances of 0° and 7° were observed to be the same at the initial period and completion period; however, the gradient of 0° and 7° from the simulation were higher than the ones from the test by 8.9% (0°) and 9.2% (7°). The higher gradient means that the transport performance is better. The gradient of -7° from the simulation was higher than the one from the test by 3.6%, and the amount of the peanuts from the simulation was larger than the test by 500 g at the initial period of 5 seconds. The higher gradient of the simulation was due to the losses at the collecting part as 3.4% (0°), 3.1% (7°), and 2.0% (-7°). The error in the amount of the peanuts (500 g) at the initial period of 5 seconds with -7° was due to the initial input difference between the test and simulation.

  • Accuracy of rice straw weight and rough grain yield predicted by a modified crop growth model based on sucros1 International journal

    Iwasaka, S., Hirai, Y., Yamakawa, T., Inoue, E., Okayasu, T., Mitsuoka, M.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Correlation anomaly detection by using time series data of agricultural machinery International journal

    Mitsuoka, M., Takata, K., Inoue, E., Okayasu, T., Hirai, Y.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Investigation of the mechanical threshing characteristics of sorghum International journal

    Momanyi J. Simanto, M. J., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Evaluation of a method to estimate light-intercepting characteristics of a rice hill using a RGB-Depth sensor International journal

    Hirai, T., Nakamura, Y., Sakai, A., Okayasu, T., Inoue, E., Mitsuoka, M.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Accuracy evaluation of a method to compute the area of combine-harvested field sections International journal

    Ogata, M., Hirai, Y., Nakanishi, T., Shikanai, T., Inoue, E., Okayasu, T., Mitsuoka, M.

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2016   2016.5

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  • Evaluation of Tractor Fuel Efficiency using Dynamometer and Baler Operation Cycle

    Dae–Hyun Lee, Chang–Hyun Choi, Sun–Ok Chung, Yong–Joo Kim, Eiji Inoue and Takashi Okayasu

    九州大学大学院農学研究院紀要   2016.2

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    Repository Public URL: http://hdl.handle.net/2324/1564100

  • Poor farmer, entrepreneurs and ICT relation in production & marketing of quality vegetables in Bangladesh Reviewed

    Mansur Ahmed, Akinori Ozaki, Kazuo Ogata, Shoichi Ito, Ikuo Miyajima, Ashir Uddin Ahmed, Takashi Okayasu, Dipok K. Choudhury, Nayeen Al Amin

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 1 )   241 - 250   2016.2

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    Bangladesh is a country where people mostly depend on agriculture. The crop sub-sector of agriculture mainly depends on extensive agrochemicals to increase production and to ensure the national food security. Although, farmers have been using agrochemicals, the production was still found not to increase significantly due to the lack of knowledge about proper and modern cultivation technology. In addition, farmers are getting less income from agriculture compared to another profession, because of the inconsistent price of agricultural produces between the rural and urban area. In order to improve the situation, Kyushu University has conducted JICA (Japan International Cooperation Agency) grassroots technical cooperation project which aims at income generation for BOP (Bottom of Pyramid) farmers by producing and marketing the chemical free quality vegetables using ICT (Information and Communication Technology). The project has been conducted in five rural areas in Bangladesh. Here, the farmers are producing vegetables under a quality vegetable management center (QVMC) which is well equipped with ICT tools, and a quality vegetable entrepreneur (QVE) is helping them regularly to get the desired production and also ensuring the marketing of such vegetables. The project has targeted 100 farmers for producing chemical free vegetables and already got 42 interested farmers in 1.5 years of time. It is observed that farmers get better production under this QVMC in the winter season (called "Rabi" in Bangladesh) than summer season (called "Kharif-1" in Bangladesh).

  • Modeling agricultural tractor motion on sloping ground considering longitu-dinal and lateral gradients Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 1 )   147 - 152   2016.2

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    Tractor overturning or rollover is a serious accident owing to its high fatality rate. Reviews of farm tractor rollover incidents indicate that overturns account for over 50% of all tractor-related deaths. To understand a tractor's performance on uneven terrain, a three-dimensional (3D) mathematical model describing the general bouncing and pitching motions of a tractor would be very useful. In this study, we design a rigid-body tractor system with the tires modeled as spring-damper units. To predict the tractor's motion on undulating surfaces, a half sine wave bump is adopted for the front and rear wheels on both the longitudinal and transverse slopes. The tractor's dimensional parameters and physical properties are taken from the work of Takeda et al. (2010). The passing over process is divided into four detailed phases and the attitude of the tractor is obtained by capturing the motion of the vehicle's center of gravity (COG). The displacement, pitch angle, and accelerations of the COG are numerically analyzed by applying the Runge-Kutta method. We introduce in this study three coordinates for the vehicle, slope and horizontal ground-based observations. The results are presented as factors of forward velocity, bump height, and slope gradient. Predictions show that there is a decrease in stability and an increase in danger at higher velocities, higher bump heights, and steep inclines. The specific cases indicating dangerous situations for the tractor are pointed out according to the results.

  • Evaluation of tractor fuel efficiency using dynamometer and baler operation cycle Reviewed

    Dae Hyun Lee, Chang Hyun Choi, Sun Ok Chung, Yong Joo Kim, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 1 )   173 - 182   2016.2

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    The purpose of this study was to evaluate fuel efficiency of tractor using working cycle. First, baler operation was conducted in Italian ryegrass farmlands and engine torque and fuel consumption were measured as field data. Second, baler operation cycle was developed using the field data. The arbitrary working cycles were generated by randomly selected micro-trips, ininimum working patterns. Some of the arbitrary working cycles were selected and baler operation cycle was determined considering sum of squared difference (SSD). The baler operation cycle was evaluated using performance value (PV) comparing with driving cycles. The results showed that PVs of the driving cycles were 67 - 109% of the baler operation cycle. Third, fuel efficiency of the baler operation was evaluated by dynamometer test using dynamometer system and the baler operation cycle. The fuel consumption and engine power were measured while the engine acted on the baler operation cycle and fuel efficiency was evaluated. The results of t-test showed no significant difference between fuel efficiency by the dynamometer test and fuel efficiency of each farmland by the field test. Considering all results of this study, the baler operation cycle is feasible to apply to evaluate fuel efficiency of tractor with dynamometer system.

  • Effect of geometrie configuration on tractor stability characteristics Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 1 )   153 - 156   2016.2

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    In this study, tractor stability was discussed from the aspects of rollover initiation, vertical and lateral vibration characteristics considering tractor dynamics in Phase I overturn. As two of the key geometric parameters of a tractor, track width ratio and wheel base ratio were intro-duced into the mathematical model developed earlier as the independent variables. Results showed that both factors greatly reduced the risk of initializing tractor rollover with their in-creasing values. Higher track width ratios were found to generally enhance the contact condition between the sensitive tire and the ground, while higher wheel base ratios showed an effect of stabilizing the vehicle more rapidly after a disturbance. However, no obvious changes in tractor bounce acceleration were observed with the variation in track width ratio, nor were the changes in lateral acceleration found with different values of wheel base ratio.

  • Design parameter optimization for tillage blade of crank-type rotavators considering strength and weight Reviewed

    Ju Seok Nam, Sang Gon Moon, Sang Hun Park, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   61 ( 1 )   165 - 172   2016.2

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    This study conducted design parameter optimization for tillage blade of a crank-type rotavator (45 kW rated power, eight blades). Load, stress, and mass of the blade were obtained from field tests and a commercial program, and design parameter optimization was carried out with them. Selected design parameters were the heights of front and rear ribs, and thickness of the blade. And objective function was minimizing the mass of the blade. Optimization for the nominal tillage blade was conducted considering two different cases of thickness profile: constant thickness of tillage blade in the length direction and inclined thickness. In addition, it was conducted in two different cases of safety factor to consider the changes of tillage load depending on the soil characteristics: higher safety factor on the stress than the nominal tillage blade and lower safety factor. From the results of the optimization for the nominal tillage blade, the mass of the blade reduced by 3.2% under the same safety factor condition. And results of the optimizations with various conditions showed that higher safety factor increased the mass of the blade. The inclined blade also increased the mass of the blade to have the same safety factor. The results of the sensitivity analysis provided that the design parameter affected most on the stress and mass of the blade was thickness of the blade. Therefore, determining appropriate safety factor and thickness of the blade is important in designing the tillage blade. Design parameters of this study do not affect on the surface area of the blade, which is the important influence factor for the tillage performance. Thus, the process used in this study will contribute to the design of tillage blade in minimizing the mass while having similar tillage performance. Further studies on optimization of the shape of the frame and optimization of geometrical structure of the blade will be needed.

  • Modeling Agricultural Tractor Motion on Sloping Ground Considering Longitu–dinal and Lateral Gradients

    Zhen LI, Muneshi MITSUOKA, Eiji INOUE, Takashi OKAYASU, and Yasumaru HIRAI

    九州大学大学院農学研究院紀要   2016.2

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  • Effect of Geometric Configuration on Tractor Stability Characteristics

    Zhen LI, Muneshi MITSUOKA, Eiji INOUE, Takashi OKAYASU, and Yasumaru HIRAI

    九州大学大学院農学研究院紀要   2016.2

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    Repository Public URL: http://hdl.handle.net/2324/1564097

  • Design Parameter Optimization for Tillage Blade of Crank–type Rotavators considering Strength and Weight

    Ju–Seok NAM, Sang–Gon MOON, Sang–Hun PARK, Eiji INOUE, Takashi OKAYASU and Dae–Cheol KIM

    九州大学大学院農学研究院紀要   2016.2

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    Repository Public URL: http://hdl.handle.net/2324/1564099

  • Development of stability indicators for dynamic Phase I overturn of conventional farm tractors with front axle pivot Reviewed International journal

    Li, Z., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y.

    Biosystems Engineering   2015.6

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  • Development of stability indicators for dynamic Phase I overturn of conventional farm tractors with front axle pivot Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru

    Biosystems Engineering   134   55 - 67   2015.6

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    Tractor overturns are serious potential hazards for operators. While rollover protective structures (ROPS) protect operators passively, greater protection can be achieved through theoretical prediction of a potential overturn. Given effective warning, an operator can act to correct a tractor's motion when a tyre is about to lose contact with the ground. Such a loss of contact is associated with the initiation of a Phase I tractor overturn. However, it remains unclear how the initiation of tractor overturn is influenced by certain factors. Furthermore, the current mathematical models for tractors should be further extended for general utilisation. This study was conducted to develop stability indicators based on a more general model for dynamic Phase I tractor overturn. We considered practical tractor configurations and motion characteristics in a three-dimensional (3D) reference frame in formulating the mathematical model. Tractor stability indicators for overturn and sideslip were derived from force calculations. A parametric study was conducted using an example tractor. The tractor speed and slope angle were found to affect the overturning stability significantly. The coefficient of maximum static friction was found to be the main factor contributing to tractor sideslip. Critical tractor speeds for various ground conditions were identified by considering the zero values of the tractor stability indicators. The critical tractor speed was determined as a function of the maximum static friction and the slope angle. By providing a display device based on ergonomics principles, the results of this study can be further implemented in the form of guidance to operators.

    DOI: 10.1016/j.biosystemseng.2015.03.016

  • Analysis of the Separating Performance of Peanut Harvester Sorting System

    Bong-Jin KIM, Young-Sun Kang, Hong-Gon KIM , Eiji INOUE ,Takashi OKAYASU, Dae-Cheol KIM

    Journal of the Faculty of Agriculture Kyushu University   2015.2

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    Repository Public URL: http://hdl.handle.net/2324/1526311

  • Analysis of the separating performance of peanut harvester sorting system Reviewed

    Bong Jin Kim, Young Sun Kang, Hong Gon Kim, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   60 ( 1 )   209 - 214   2015.1

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    This study examined the performance of the separating system of a self-propelled peanut harvester by analyzing the relationship between a shaking screen and rotational speeds of winnowing. The shaking screen was manufactured to have rotational speeds of 370, 470, 570 rpm and winnowing was manufactured to have rotational speeds of 1,500, 1,760, 2,020 rpm by adjusting the pitch circle diameter of each pulley. The sample was prepared based on the yields of an actual self-propelled peanut harvester and analyzed with Statistical Analysis Software after measuring the weight of peanuts and stems. The stem separation ratio was high as 95.3% when rotational speeds were 570 rpm (shaking screen) and 2,020 rpm (winnowing). The peanut loss ratio was low as 0% when rotational speeds were 370 rpm (shaking screen) and 1,500 rpm (winnowing). The results indicated that the stem separation ratio was improved with high rotational speeds of shaking screen and winnowing; the peanut loss ratio was reduced with low rotational speeds of shaking screen and winnowing. However, the rotational speed of winnowing did not influence on the peanut loss ratio; as a result, separation performance was improved with low rotational speed of shaking screen and high rotational speed of winnowing. Low rotational speed of shaking screen, however, may cause congestion during process, thus follow-up studies are needed.

  • Production of rice for whole crop silage using manure in Itoshima Region, Fukuoka prefecture Reviewed

    Borin Khem, Hirai Yasumaru, Takeo Yamakawa, Yuki Mori, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Journal of the Faculty of Agriculture, Kyushu University   60 ( 1 )   65 - 71   2015.1

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    The cultivation area of rice for whole crop silage (WCS) has rapidly increased in the last decade in Japan due to increasing demand for domestic livestock feed as well as a measure for the use of redundant paddy field. On the other hand, the production cost of rice for WCS is largely supported by subsidy now, so it is required to reduce the production cost. Manure application is a prospective way to reduce the cost of fertilizer and to sustain soil fertility. Thus, we investigated the production of rice for WCS using manure in Itoshima region, Fukuoka Prefecture, Japan, from the aspects of soil fertility, plant growth, and dry matter weight. The fields where manure was applied showed relatively high TN contents in soil whereas fields where manure was not applied showed low TN contents. This result indicated that soil fertility can be deteriorated by the continuous production of rice for WCS when organic matter is not supplied by manure and other materials. Plant length (r=0.748) and tiller number (r=0.891∗∗) at panicle initiation stage were closely correlated with TN content in soil whereas SPAD readings (r=0.846∗∗) at the same stage was closely correlated with mineralized N in soil. Dry matter weight was positively correlated with TN content in soil (r=0.767∗∗). Fields where manure was not applied had small dry matter weight although nitrogen was supplied from fertilizer. These results indicated that dry matter weight was significantly affected by soil fertility.

  • Prediction of tractor sideslipping behavior using a quasi-static model Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru, Zhongxiang Zhu

    Journal of the Faculty of Agriculture, Kyushu University   60 ( 1 )   215 - 218   2015.1

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    Tractor stability predominantly determines operator's safety. For a tractor parking on lateral slopes, overturning accidents have been frequently discussed using mathematical models. While the existing static models remarkably contribute tractor overturning mechanisms, few of them have considered the stability from the perspective of tractor sideslip. In our study, a relatively precise quasi-static model presented recently was adopted as the base model. We expanded it by introducing potential tractor sideslips. While the original model pointed out the lateral slope angle as the main factor influencing tractor overturns, we investigated tractor slipping stability under the influences of the slope angle and the coefficient of friction. The dimensional parameters of the example tractor for simulation were set the same as those in the original work. It was found that the allowable friction forces of both the front and rear tires primarily depended on the coefficient of friction rather than the slope angle. By comparing the surfaces of the allowable friction forces and the corresponding friction forces, tractor slipping thresholds for the front and rear tires were identified. Caution areas implying certain ground conditions that will definitely cause tractor sideslip were marked accordingly. The results shown in this study provide a relatively comprehensive way to understand tractor static stability when both tractor sideslip and overturn are concerned.

  • Modification of a tractor dynamic model considering the rotatable front end Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru, Zhongxiang Zhu

    Journal of the Faculty of Agriculture, Kyushu University   60 ( 1 )   219 - 224   2015.1

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    A mathematical model for tractor dynamics was expanded by considering the rotatable tractor front end. The fundamental shortcoming of the simplified model was revealed by the loss of contact of the tire with a rigid horizontal surface in an obstacle-passing case. Further shortcomings of the simplified model arise from aspects of the motion and vibration characteristics. The improved model provides a better and more realistic representation of the tire-ground contact condition and is applicable to tractors on lateral slopes. The independent roll motions of the two main tractor parts (the front end and main body) significantly reduce the motions of the tractor and thus increase its stability. Furthermore, the effects of the forward tractor speed and obstacle height were studied for a tractor on a 10° lateral slope. By analyzing the motion amplitude and tire-ground contact condition, the tractor speed and obstacle height parameters associated with danger and risk were evaluated. The results suggest the greater capability of the improved model to predict tractor dynamic response in Phase I overturn.

  • Performance of measuring vibration of MEMS sensor Reviewed

    Jung Seob Choe, Eiji Inoue, Muneshi Mitusoka, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   59 ( 2 )   351 - 358   2014.8

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    The purpose of this study is to examine the usefulness of an MEMS sensor for measuring vibration of agricultural vehicle by obtaining serial data of vibration acceleration of agricultural vehicle using an MEMS sensor and translational accelerometer and thereby calculating RMS and PSD for comparison and analysis as a step before construction of measuring system which can identify operating conditions of agricultural packaging machinery at all times. Although there are differences between vertical acceleration RMS and pitching angular acceleration measured by an MEMS sensor and translational accelerometer due to disturbance factors and computation errors, both measurements obtained by the two methods typically increase as vehicle body moves faster. For PSD, likewise RMS, there were differences in measurements, but peak frequencies were almost matched between the two methods, so it was confirmed that an MEMS sensor could exactly detect vibration characteristics. Therefore, it was considered that instead of large and costly translational accelerometer, an MEMS sensor which can measure both translational acceleration (back-and-forth, lateral, and vertical) and angular acceleration (rolling, pitching, and yawing) only with a single unit could be properly used in identifying vibration characteristics of agricultural packaging machinery.

  • Abnormal detection of agricultural machineries using multi-time series International journal

    Muneshi Mitsuoka, Yuki Kimoto, Kohei Takata, Eiji Inoue, Takashi Okayasu, Yasumaru Hirai

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014   2014.5

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  • Evaluation of measurement accuracy of the harvest area corresponding to each shipment to country elevator using GPS and QZSS International journal

    Yasumaru Hirai, Kodai Tanaka, Tsuneo Nakanishi, Takeshi Shikanai, Eiji Inoue, Akira Fukuda, Takashi Okayasu, Muneshi Mitsuoka

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014   2014.5

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  • Study on noise reduction in cabin of agricultural machineries using active noise control method International journal

    Satoru Umeno, Eiji Inoue, Muneshi Mitsuoka, Takashi Okayasu, Yasumaru Hirai

    Proceedings of International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014   2014.5

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  • 植物面積指数および葉緑素計値に基づく複数の水稲生育指標の推定法, Reviewed

    平井康丸・西本琢人・猿田恵輔・田中恒大・井上 英二・岡安 崇史・光岡 宗司

    システム農学   2014.4

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  • 水稲の収量・品質決定要因解析手法としての回帰木の適用 Reviewed

    田中恒大・平井康丸・猿田恵輔・井上 英二・岡安 崇史・光岡 宗司

    日作紀   2014.4

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  • Shape model of grain and straw using coupling elements and flight simulation of threshing unit of combine by discrete element method Reviewed International journal

    Yuko Ueka, Masami Matsui, Eiji Inoue, Muneshi Mitsuoka, Takashi Okayasu

    Engineering in Agriculture Environment and Food   2014.2

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  • GPS記録計を用いた精玄米収量計測法

    田中恒大・平井康丸・鹿内健志・井上 英二・岡安 崇史・光岡 宗司

    九大農学芸誌   2014.2

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  • Application of a regression tree to analysis of rice yield and quality determinants Reviewed

    Kodai Tanaka, Hirai Yasumaru, Keisuke Saruta, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Japanese Journal of Crop Science   83 ( 2 )   143 - 154   2014.1

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    In recent years, it is becoming important to collect and utilize different data on rice production to achieve a high yield and high quality, and to transfer the skill to the next generation. The objective of this study was to investigate the validity of a regression tree for analysis of yield and quality determinants. Determinants of grain yield (yield), 1000-grain weight, and protein content of brown rice (protein) were analyzed by focusing on explanatory variables for the meteorological environment and conditions of rice growth and nutrition after the heading period. The spikelet number/m2 was identified as a yield determinant by a regression tree and multiple regression analysis. However, the predictive accuracy was higher in multiple regression analysis due to a strong linear correlation between yield and spikelet number/m2. For the analysis of the 1000-grain weight with nonlinear data structure, no reasonable determinant was identified in multiple regression analysis, while a regression tree implied the 1000-grain weight determinant by clarifying its relationship with SPAD readings about 20-d after heading (SPAD20). The SPAD20 was also identified as a protein determinant. Furthermore, it was indicated for data under the condition with high SPAD readings that protein was lowered by the high temperature during 5 to 30 days period after heading. A regression tree can clarify the relationship among parts of data by splitting data hierarchically, but multiple regression analysis can not.

    DOI: 10.1626/jcs.83.143

  • 7-1-6 パターン認識を用いた水稲の収量・タンパク質含有率予測モデル(7-1 肥料および施肥法,2014年度東京大会)

    Hirai Yasumaru, Takeo Yamakawa, Yuki Mori, Teruaki Nanseki, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    日本土壌肥料学会講演要旨集   60 ( 0 )   117   2014.1

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    DOI: 10.20710/dohikouen.60.0_117_3

  • Shape model of grain and straw using coupling elements and flight simulation of threshing unit of combine by discrete element method Reviewed

    Yuko Ueka, Masami Matsui, Eiji Inoue, Mitsuoka Muneshi, Takashi Okayasu

    Engineering in Agriculture, Environment and Food   7 ( 1 )   34 - 39   2014.1

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    The threshing unit of a combine comprises a multiphase flow; therefore, it is essential to consider it on the basis of the flow model. In this study, flight simulation by DEM with fixed wind velocity was carried out. The grain and straw were considered to be ellipsoidal and cuboidal, respectively. A two-dimensional model coupling with a circle element was constructed. Each flight trajectory was reproduced in terms of the initial conditions and changes in winnowing velocity. The average flight velocity of the grain was 0.2 m/s higher than that measured in the experiment. It can simulate to closer phenomenon by mixing different particle mass and straw, analyzing the increase in particles and linking it with fluid analysis.

    DOI: 10.1016/j.eaef.2013.12.006

  • Lateral slope effect on tipping behavior of a tractor encountering an obstacle (model development) Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   59 ( 2 )   345 - 349   2014.1

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    A three-dimensional mathematical model of tractor on lateral slopes was developed in this study. The model considers the nonlinear geometric relationships of the arms of the ground supporting forces when the tractor passes over a half sine curve obstacle. It is subsequently ap-phcable to large rotations of a tractor. Meanwhile, the change of the direction of a supporting force due to the interaction between tractor pitch and roll motions and its result in corresponding tire deformation are the concern of this study. Given the transformation matrix, the tractor translations and rotational motions were observed in a global coordinate. According to the de-veloped model, one can obtain the tractor bounce displacement, the pitch angle, and the accel-eration characteristics. Furthermore, the supporting and lateral friction forces can be examined since they predominantly determine the tractor lateral rollover and sideslip which affect tractor safety to a great extent. Therefore, the lateral slope effect on these forces was investigated con-sidering a tractor speed of 0.5 m/s and an obstacle height of 0.08 m. Results showed that as the slope angle increases, both the supporting and lateral friction forces put the tractor to a situation closer to danger. In particular, a specific slope angle of 25' was highlighted as a warning parameter because the onset of rollover as well as tractor sideslip were discovered. It is also found that a tractor is more susceptible to sideslip than rollover along with the slope increasing.

  • Elastoplastic deformation behavior for ballast under monotonic and cyclic loading conditions

    Takashi Okayasu, Takahisa Nakamura, Katsumi Muramoto, Yoshitsugu Momoya

    18th International Conference of the International Society for Terrain-Vehicle Systems, ISTVS 2014 18th International Conference of the ISTVS   2014.1

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    Various constitutive models for soils and gravels have been developed in the last century. Among them unconventional plasticity theory is a key and necessary approach for describing cyclic deformation behavior of materials. The "subloading surface model" proposed by Hashiguchi, which belongs to the unconventional plasticity framework, does not assume a purely-elastic domain inside a yield surface and premises that an inelastic strain is induced by stress changes inside the yield surface. It is able to describe the mechanical behavior of materials such as not only smooth elastoplastic transition but also cyclic loading behavior. Thus, elastoplastic constitutive models for various materials based on this model have been developed up to present. Moreover computational analysis methods such as a finite element method (FEM) incorporating this constitutive model have been utilized for solving problems in geotechnical engineering fields. On the other hand, gravel such as ballast causes elastoplastic deformation in the proportional loading process. However the accumulation of the plastic deformation under a cyclic loading condition is smaller than that for typical soils such as sand and clay in general since the elastic property of ballast particle is high and the slip between each ballast is remarkably suppressed by the particles' packing. In this study, the subloading surface model is modified by assuming an existence of the elastic domain surface inside the subloading surface so as to realistically describe the inelastic deformation behavior of ballast including monotonic and cyclic loading conditions. The validity of the model is verified by the comparison with large-scale triaxial compression test data for both loading conditions.

  • Dynamic analysis of agricultural wheel tractor driving on uneven surface under the influences of speed and slope angle Reviewed

    Zhen Li, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   59 ( 2 )   339 - 343   2014.1

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    A dynamic three-dimensional model of a tractor travelling through a half sine wave obstacle was developed considering bouncing, pitching, and rolling motions. Compared with the case of bouncing on a level road, setting the obstacle on a sideways slope under the upper side of the forwarding tractor could stimulates a much more dangerous scenario, which may lead to tractor overturn. In this model, the tractor was considered as a rigid body, except for the tires, which were regarded as spring-damper units. The entire passing-over process was divided into four periods as done by Yamamoto and Shimada (1957), and Takeda et al. (2010) for dissecting the influence of each specific travelling period on the tractor. Basic dimensional parameters and physical properties of the objective tractor, used as input parameters in our simulation, were cited directly from the work of Takeda et al. (2010). Dynamic behavior of the tractor was described by capturing the motion of its center of gravity, which includes vertical displacement, angle, and angular acceleration for the pitching and rolling phenomena. Using the Runge-Kutta method, the desired mathematical model was numerically simulated through programming in Visual Basic Application language within Microsoft Excel. Tractor dynamic predictions were presented as factors of forward constant speed and lateral slope. The simulation results show fluctuations and increase in danger levels owing to higher velocities and steep lateral slopes. Therefore, this model enables us to explore potential overturning judgment standards.

  • Predictive models for yield and protein content of brown rice using support vector machine Reviewed International journal

    Keisuke Saruta, Yasumaru Hirai, Kodai Tanaka, Eiji Inoue, Takashi OKAYASU, Muneshi Mitsuoka

    Computers and Electronics in Agriculture   2013.11

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    Rice production in Japan is facing problems of yield and quality instability owing to recent climate changes, aging of farmers, and a decrease in the farmer population. Thus, it is becoming important to develop an improved rice production technology that utilizes collected data about rice production rather than relying on the conventional technology that is based on the experience and knowledge of individual farmers. We developed predictive models for yield and protein content of brown rice that can provide useful knowledge to support farmer’s management decision-making, utilizing data sets from 47 paddy fields where rice was produced under various environments and management styles. Support vector machines (SVMs) were applied to build the predictive models based on explanatory variables representing the growth and nutrition conditions after the heading stage and the meteorological environment after the late spikelet initiation stage. The models achieved quantitative accuracy that was within approximately 1 t ha−1 in yield for 85.1% of the total data sets and within 0.8% in protein content for 76.6% of the total data sets, respectively. Further, patterns of explanatory variables classified in three classes of yield and protein content, which were visualized by the predictive models, were reasonable in terms of knowledge of crop science. We found that the predictive models using SVMs had the potential to describe a relation between yield or protein content and multiple explanatory variables that reflected diverse rice production in actual fields, and could provide useful knowledge for decision-making of topdressing and basal fertilization.

    Keywords
    Rice production; Yield; Protein content; Predictive model; Support vector machine; Pattern recognition

    DOI: http://dx.doi.org/10.1016/j.compag.2013.09.003

  • 部分浅耕播種法がコムギの品質・収量および播種の省力化に及ぼす影響 Reviewed

    川村富輝,中野恵子,光岡宗司,井上英二,岡安崇史

    農作業研究   48 ( 3 )   111 - 120   2013.9

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    Effects of Partially Shallow Tilling and Sowing Method on the Growth and the Yield of Wheat (Triticum aestivum L.) and Labor-Saving Cultivation

  • Ergonomic study for comfort operating the pedals of the agricultural tractors Reviewed

    Hyuck Joo Kim, Myoung Ho Kim, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 2 )   329 - 338   2013.9

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    Aging and feminization of farming population are a major burden on current agricultural sector, and some measures are demanding to adjust this trend. The agricultural mechanization has relieved farmers of most of the hard physical labor, but still work environments are poor, and there are a lot of harmful factors affecting human health. Therefore, improvement of safety and comfort in agricultural machinery is needed. In case of the most commonly used domestic agricultural machinery, agricultural tractors, operation device location and operating force are regulated by international rules such as ISO 4253, but the rule is not sufficient for domestic operators, since it was not developed for operator's comfort and was drawn out based on the westerners. In this study, we developed a technique that evaluates the conformability of tractor driving operation device for all Korean farmers including senior and women farmers. We also established evaluation equipments and inspection method of tractor operation conformability to promote dissemination of tractors that suit for Korean farmers' physique. In the future, the result allows tractor manufacturers to propose design guidelines for proper location and operating force of tractor operating device. It also allows domestic agriculture manufacturers to develop agricultural machinery that considered the conformability of farmers from the design stage.

  • Analysis of the tillage and power consumption characteristics of a crank-type rotavator according to the tillage blade shape Reviewed

    Dae Chun Kim, Ju Seok Nam, Myoung Ho Kim, Jung Seob Choe, Eiji Inoue, Takashi Okayasu, Dae Cheol Kim

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 2 )   319 - 328   2013.9

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    In this study, the effects of tillage blade shape on tillage and power consumption characteristics were investigated for a crank-type rotavator. Three types of tillage blades were applied, i.e. standard blade, endsloped blade and narrow blade for the purpose of the study. Tillage operations were carried out using each blade with the same prime mover tractor and rotavator platforms in two different soil and Power Take-Off (PTO) speed conditions. During the operations, PTO speed and torque, soil pulverizing ratio and inversion ratio, actual work speed, and rotavating width and depth were measured, and the required power of the PTO shaft, field capacity and flow of tilled soil were calculated to compare the characteristics according to the tillage blade shape. Experimental results show that the rotavating width, actual work speed, field capacity, flow of tilled soil and soil inversion ratio were independent of the blade shape, whereas the rotavating depth and soil pulverizing ratio were influenced by the blade shape according to the soil condition. In the most commonly used tractor gear conditions of L2 and L3, the PTO power of the end-sloped blade and narrow blade were almost the same as each other, and significantly lower than the standard blade in the paddy field, whereas there were no significant differences among blades in the dry field. It can be concluded that if an adequate blade shape suitable for specific soil conditions is applied to the crank-type rotavator, power efficiency and good tillage performance operation can be achieved at the same time. Further research is needed to determine the optimal shape of tillage blade with certain soil properties.

  • Application of the constant soil temperature layer for energy-saving control of the local environment of greenhouse crops. I. Local control of the ambient environment of strawberry Reviewed

    Yuta Miyoshi, Kota Hidaka, Takashi Okayasu, Osamu Hirano, Daisuke Yasutake, Kitano Masaharu

    Environmental Control in Biology   51 ( 2 )   89 - 94   2013.8

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    In a farmer's strawberry greenhouse, seasonal changes in solar radiation and air conditions (temperature, humidity, and CO2 concentration) were measured, and it became clear that the stable year-round production of strawberry was depressed by low temperature and low solar radiation in the cold season and by excessively high temperature in early autumn. Furthermore, dew formations during the nighttime and inappropriate application of CO2 enrichment were also related to the depression of stable production. Therefore, a local environmental control system was newly developed for strawberry crops based on air circulation and heat exchange between the constant soil temperature layer and the ambient air. The system consisted of an underground air pipe (UAP) and perforated inter-row air ducts (IAD) connected to the UAP; the UAP was set at a depth of 1.5 m, where soil temperature remained suitable for year-round strawberry growth. The greenhouse air was drawn into the UAP, and the air flowing through the UAP exchanged heat with the constant soil temperature layer and was dispersed to the ambient environment of the strawberry crops through the perforated IAD. In the nighttime during the cold season, air flowing through the system was heated by 8°C, and a heating effect of 3°C was observed in the ambient air. The proposed system of applying the constant soil temperature layer can be expected to reduce the nighttime heating load by 50% and enable energy-saving environmental control.

    DOI: 10.2525/ecb.51.89

  • 転換畑における部分浅耕播種法がダイズの生育・収量に及ぼす影響 Reviewed

    川村富輝,小田原孝治,光岡宗司,井上英二,岡安崇史

    農作業研究   48 ( 2 )   49 - 59   2013.6

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    Effects of Partially Shallow Tilling and Sowing Method on the Growth and the Yield of Soybean (Glicine max L.) in Upland Filed Converted from Paddy Field

  • Application of the Constant Soil Temperature Layer for Energy-saving Control of the Local Environment of Greenhouse Crops. I. Local Control of the Ambient Environment of Strawberry Reviewed

    Yuta MIYOSHI, Kota HIDAKA, Takashi OKAYASU, Osamu HIRANO, Daisuke YASUTAKE, KITANO Masaharu

    Environ. Control Biol.   51 ( 2 )   89 - 94   2013.5

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  • Approach to Local Enviroment Control for Stable Production of Stawberry International journal

    Miyoshi, Y., Hidaka, K., Okayasu, T., Hirano, O., Yasutake, D., Kitano, M.

    Proc. IFAC2013 Bio Robotics Conf.   2013.3

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  • Modeling of soil displacement and soil strain distribution under a traveling wheel Reviewed International journal

    Saengprachatanarug, K., Ueno, M., Taira, E., Takashi OKAYASU

    Journal of Terramechanics   50 ( 1 )   5 - 16   2013.2

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    The empirical Gaussian-based mathematical model of the soil displacement increment under a traveling wheel was extended to be applicable to any depth of soil layer under the ground contact surface of the wheel. The unknown coefficients were obtained by least mean-square fitting with the soil displacement curve measured through a sophisticated laboratory soil bin test. Those coefficients were then re-derived as a function of depth. The movement of soil particles at the ground contact surface was modeled by dividing movement into two kinds; first, the free movement of soil particles before contact with the wheel and the movement of the particles after they are separated from the wheel surface and, second, soil movement during attachment to the wheel surface. By combining the models for the ground contact surface of the wheel with that for all soil layers, an extended model that can describe soil displacement increment in both vertical and horizontal directions using one equation was established. The predicted results obtained using the extended model fitted quite well with the measured values. The predicted strain increment distributions also show the same trends as the measured distributions.

    DOI: http://dx.doi.org/10.1016/j.jterra.2012.06.001

  • Sterilization in hydroponic recycling system using visible light-reactive titanium dioxide photocatalysts Reviewed

    Sung Won Chung, Yu Shin Ha, Kim Yung Lee, Jong Soon Kim, Jong Min Park, Soon Goo Kwon, Won Sik Choi, Soon Hong Kwon, Muneshi Mitusoka, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 1 )   93 - 98   2013.2

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    This research was aimed at developing a hydroponie recycling system using a visible light- reactive titanium dioxide (TiO
    2
    ) photocatalyst. We made a sterilization system for the nutrient solution by utilizing the features of the filters coated with visible light-reactive titanium dioxide photocatalyst. The system is composed of a photocatalyst filter (300×300×20 mm), a 4-tier stair type processing channel (305 mm wide, 2,100 mm long, 30 mm high), a supply tank, a catchment tank, a water pump, a circulation control facility, an insolation sensor, and a data log. We also evaluated the sterilization performance using a number of filters, the initial density of spores in the nutrient solution, the species of spores, flow rates, and the amount of insolation. In the experiment with 20 filters, sterilization performance per 1 filter was 20.3% higher than one per 5 filters. Sterilization performance at a low initial density of spores (26 counts/0.9 mm3) is 23.9% higher than at a high initial density of spores (440.3 counts/0.9 mm3). Colletotrichum was more sensitive to the photocatalyst than Fusarium, and the slow flow rate (0.5 L/min) has more sterilization effects (9.0%) than the fast flow rate (1.0 L/min). The logarithmic relation of the average insolation and lethal intensity of unit spore density is correlated as 0.926 of the coefficient of determination (R2). These results provide valuable information for TlO
    2
    photocatalytic treatment of waste nutrient solutions under solar light irradiation.

  • Statistical analysis of threshing characteristics of Impact-type rice plant threshing device Reviewed

    Jung Seob Choe, Eiji Inoue, Muneshi Mitusoka, Takashi Okayasu, Hirai Yasumaru

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 1 )   69 - 78   2013.2

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    An impact-type threshing device that applies perpendicular force to rice ear was developed in this study. Threshing experiment was performed for a single ear and to a bundle of rice plants. Crop properties and collision conditions were used as input parameters in this experiment to perform multiple regression analysis, thereby estimating threshing rate and percentage of grains with rachis branch. Optimal regression model for estimating threshing rate and percentage of grains with rachis branch was obtained for both single ear and bundle of rice plants. Although all four regression models had low analytical error and verification error, but relative error was high due to insufficient number of datasets and accuracy was low as a result. However, certain extent of estimation was possible for threshing rate. Observing that threshing rate was highly correlated with transverse threshing force and transverse displacement, it was inferred that threshing of rice plant by impact-type threshing device is from perpendicular force acting on rice ears. Although estimation of percentage of grains with rachis branch had low absolute error, accuracy was low because of relative error that is enlarged due to low rate of occurrence. Since percentage of grains with rachis branch was negatively correlated with net's mesh size, we concluded that the mesh size must be made as low as possible to reduce percentage of grains with rachis branch.

  • Measuring inclination angle of Semi-crawler tractors using MEMS sensor Reviewed

    Jung Seob Choe, Muneshi Mitusoka, Eiji Inoue, Takashi Okayasu, Hirai Yasumaru, K. I.M. Tae Wook, Soon Goo Kwon, Jong Min Park

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 1 )   79 - 85   2013.2

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    In this study, we established a method to calculate inclination angle of moving vehicles from acceleration and angular velocity measured by microelectromechanical systems (MEMS) sensor, which is becoming popular recently due to its ultra-small size and low manufacturing cost. We applied the technique to measure inclination angle of semi-crawler tractor to validate its usefulness. Results from various methods to calculate inclination angle of a vehicle from acceleration and angular velocity data showed that moving average acceleration method and wavelet acceleration method produced results that significantly deviated from the actual inclination angle, while results from angular velocity method and acceleration-angular velocity method were close to the actual inclination angle. Inclination angle calculated by acceleration method in a static state was very similar to the measurement from inclination sensor and was highly accurate, but did not demonstrate sufficient accuracy in dynamic state as the estimated inclination angle was at maximum 10' smaller at inclination angle of 75". In the meanwhile, the inclination angle calculated by angular velocity method showed only small deviation from the sensor measurement even at dynamic state. As a result of measuring inclination of semi-crawler type tractor using MEMS sensor, it was determined that the angular velocity method is the most versatile of the four methods tested as it can not only produce very accurate time series of inclination angle but also be used to easily obtain angular displacement from the angular velocity data obtained. However, error of integration was shown to increase with longer measurement times and it must be addressed by an appropriate solution. Acceleration-angular velocity method also produced similar results as experiments were performed indoors where disturbance factors were few. The inclination angle measurement system using MEMS sensor established in this study can be applied to agricultural vehicles such as tractors as well as to almost all construction and general vehicles with drive system. We expect the system to contribute to development of a safety system that can prevent rollover accidents and quickly respond to them.

  • Development of Post-harvest bulk handling system of onions (I) - Characteristics of friction and airflow resistance Reviewed

    Jong Min Park, Ghi Seok Kim, Soon Hong Kwon, Sung Won Chung, Soon Goo Kwon, Won Sik Choi, Jong Soon Kim, Muneshi Mitusoka, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   58 ( 1 )   87 - 92   2013.2

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    Onion is one of the major vegetables and is also the number one crop from the perspective of storage amount in South Korea. However, the postharvest processing for onions has been accomplished mainly with net package, causing high cost and low efficiency. Thus, development of a continuous and integrated processing system is required to ensure buyer satisfaction and marketing success. The objective was to determine factional properties and airflow resistance of onion, which are very important to understand the behavior of onions in developing its bulk handling system. Frictional properties of onions, friction coefficient and rolling resistance, were determined by the method of inclined surface. Those values were investigated on three different surfaces (rubber, plywood, and galvanized steel) for four size grades (extra-large, large, medium, small). The airflow resistance, or static pressure drop, was measured with different mixing rate of onion sizes, and equations were developed for prediction of pressure drop in bulk state. The static-friction coefficient ranged from 0.35 to 0.46 for all experiment condition. The highest value was obtained on the plywood surface (0.46+0.06) followed by the rubber (0.41±0.03) and galvanized steel surface (0.35±0.03). This friction coefficient decreased with the onion bulb size. The static-rolling resistance ranged from 8.4' to 17.6° for all sizes, and, unlike the friction coefficient, increased with the onion bulb size. The highest values of rolling angles were obtained on the rubber surface (15.43±4.78) followed by the plywood (13.77±3.77) and galvanized steel surface (10.84±4.26). The airflow resistance increased as the onion size decreased, and a low porosity produced a higher pressure drop in all mixing rate of onion size. The pressure drop in stacked onion was also proportional to the superficial air velocity. Equation developed for prediction of pressure drop with superficial air velocity (SV) and stacking depth (SD) (r2=0.99) was better than one with stacking depth (SD) (r2=0.95) only. These results are invaluable to design post-harvest bulk handling system of onions.

  • Approach to local environment control for stable production of strawberry Reviewed

    Yuta Miyoshi, Kota Hidaka, Takashi Okayasu, Osamu Hirano, Daisuke Yasutake, Kitano Masaharu

    IFAC-PapersOnLine   1 ( PART 1 )   2013.1

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    In a farmer's strawberry greenhouse, seasonal changes in solar radiation and air conditions (temperature, humidity and CO2 concentration) were measured, and it became clear that the stable yearround production of strawberry was depressed by low temperature and low solar radiation in the cold season and excessively high daytime temperature in the warm season. Furthermore, dew formation in the nighttime, excessively low humidity in the fair daytime and the inappropriate application of CO2 enrichment were also concerned with the depression of stable production. Therefore, a local environment control system was newly developed on the basis of the air circulation and the heat exchange between the constant soil temperature layer and strawberry inter-rows. The system was composed of an underground air pipe (UAP) and inter-row air ducts (IAD) connected to UAP, and UAP was set at a depth of 1.5m where the soil temperature is kept around a temperature suitable for the strawberry growth all the year round. The system can be expected to enable the energy-saving and local control of the ambient air condition of strawberry crops for the stable year-round production.

  • 変化点分析法を用いた圃場環境情報の特徴量抽出とその妥当性の検証 Reviewed

    Takashi Okayasu, Prima Nugroho Andri, 尾崎 彰則, Mitsuoka Muneshi, Teruaki Nanseki, Eiji Inoue, Hirai Yasumaru

    農業情報研究   22 ( 3 )   174 - 182   2013.1

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    Feature Extraction of Field Environmental Information Using the Change Point Analysis Method

    DOI: 10.3173/air.22.174

  • Predictive models for yield and protein content of brown rice using support vector machine Reviewed

    Keisuke Saruta, Hirai Yasumaru, Kodai Tanaka, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Computers and Electronics in Agriculture   99   93 - 100   2013.1

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    Rice production in Japan is facing problems of yield and quality instability owing to recent climate changes, aging of farmers, and a decrease in the farmer population. Thus, it is becoming important to develop an improved rice production technology that utilizes collected data about rice production rather than relying on the conventional technology that is based on the experience and knowledge of individual farmers. We developed predictive models for yield and protein content of brown rice that can provide useful knowledge to support farmer's management decision-making, utilizing data sets from 47 paddy fields where rice was produced under various environments and management styles. Support vector machines (SVMs) were applied to build the predictive models based on explanatory variables representing the growth and nutrition conditions after the heading stage and the meteorological environment after the late spikelet initiation stage. The models achieved quantitative accuracy that was within approximately 1tha-1 in yield for 85.1% of the total data sets and within 0.8% in protein content for 76.6% of the total data sets, respectively. Further, patterns of explanatory variables classified in three classes of yield and protein content, which were visualized by the predictive models, were reasonable in terms of knowledge of crop science. We found that the predictive models using SVMs had the potential to describe a relation between yield or protein content and multiple explanatory variables that reflected diverse rice production in actual fields, and could provide useful knowledge for decision-making of topdressing and basal fertilization.

    DOI: 10.1016/j.compag.2013.09.003

  • Modeling of soil displacement and soil strain distribution under a traveling wheel Reviewed

    Khwantri Saengprachatanarug, Masami Ueno, Eizo Taira, Takashi Okayasu

    Journal of Terramechanics   50 ( 1 )   5 - 16   2013.1

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    The empirical Gaussian-based mathematical model of the soil displacement increment under a traveling wheel was extended to be applicable to any depth of soil layer under the ground contact surface of the wheel. The unknown coefficients were obtained by least mean-square fitting with the soil displacement curve measured through a sophisticated laboratory soil bin test. Those coefficients were then re-derived as a function of depth. The movement of soil particles at the ground contact surface was modeled by dividing movement into two kinds; first, the free movement of soil particles before contact with the wheel and the movement of the particles after they are separated from the wheel surface and, second, soil movement during attachment to the wheel surface. By combining the models for the ground contact surface of the wheel with that for all soil layers, an extended model that can describe soil displacement increment in both vertical and horizontal directions using one equation was established. The predicted results obtained using the extended model fitted quite well with the measured values. The predicted strain increment distributions also show the same trends as the measured distributions.

    DOI: 10.1016/j.jterra.2012.06.001

  • Evaluation of the effects of maturity acceleration of rice straw and nitrogen fertilizer on application of aerobically fermented liquid fertilizer in rice production Reviewed

    Yasumaru Hira, Keisuke Saruta, Hirohiko Shuto, Takeo Yamakawa, Toshihiro Mochizuki, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Japanese Journal of Crop Science   82 ( 4 )   325 - 336   2013.1

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    There is growing concern to promote the use of aerobically fermented liquid fertilizer produced from human waste and sludge to reduce the cost, environmental load, and energy consumption in rice production. We tested the maturity accelerating effects on rice straw and effects as a nitrogen fertilizer by applying liquid fertilizer in 2009 and 2010. The maturity accelerating effects were not significant in terms of dry weight, total nitrogen content (T-N), and nitrogen uptake. When liquid fertilizer, which had an ammonium nitrogen (NH4-N) ratio of approximately 70%, was incorporated into the plow layer of the soil as a basal fertilizer, the nitrogen fertilizer effect and panicle number were equivalent to those for chemical fertilizers. However, when liquid fertilizer with a low NH4-N ratio was applied, the dry weight, T-N, and nitrogen uptake were lowered resulting in reduced panicle number. When applied as a top-dressing on the soil surface, nitrogen uptake decreased because of NH4-N loss through volatilization. This decrease in nitrogen uptake may have reduced spikelet number. Nitrogen uptake slowed under the low NH4-N ratio, and nitrogen nutrition conditions deteriorated during the ripening period. This may have lowered 1000-grain weight under the high average temperature conditions in 2010 (26.7°C during the 20-d period after heading). The yield tended to be low because of these reductions in yield components. Nitrogen fertilizer effects were affected by NH4-N ratio, whose fluctuation is considered problematic.

    DOI: 10.1626/jcs.82.325

  • Development of actuation framework for agricultural informatization supporting system Reviewed

    Andri Prima Nugroho, Takashi Okayasu, Eiji Inoue, Hirai Yasumaru, Mitsuoka Muneshi

    IFAC-PapersOnLine   1 ( PART 1 )   2013.1

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    Agriculture faces many challenges in the production system, such as climate and weather, field conditions, crop types, soils types and conditions, and so on. Farmers consider many aspects to optimize the "on-farm" process by their long-term experiences. Various informatization agricultural supporting systems have been developed using ICT (Information and Communication Technologies) to improve agricultural productivity. Authors have developed the ICT-based agricultural supporting system called the "Agri-eye" in which a field monitoring, crop growth and quality evaluation, work recording, and online data offering and sharing sub-systems were incorporated. On the other hand, an actuation subsystem for controlling and managing agricultural facilities in a greenhouse such as a heater, water pumps, circulation fans, a CO2 generator, etc. has been introduced. In this study, an actuation framework is developed as a useful method for monitoring and controlling local facilities and machineries. The method can be used for controlling particular device with adjusting parameter from Agri-eye server to meet the cultivation requirement. Furthermore, the validity of the developed framework was verified to monitor and control air temperature in laboratory test box.

  • Evaluation of a multiple linear regression model for the prediction of panicle number in rice Reviewed

    Yusaku Yamauchi, Hirai Yasumaru, Keisuke Saruta, Takeo Yamakawa, Eiji Inoue, Takashi Okayasu, Mitsuoka Muneshi

    Journal of the Faculty of Agriculture, Kyushu University   57 ( 2 )   421 - 426   2012.9

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    In Japan, rice production technology must be developed to meet stable yield and quality targets. This objective is important because of the demand for high quality rice by consumers, the necessity of enhancing Japan's international competitive power, and a declining trend in the production of first grade rice. To achieve stable yield and quality, it is important to control panicle number appropriately since it is a primary factor to determine rice yield and quality. In this study, a multiple linear regression model was built to predict panicle number, which can support the decision-making process of farmers in agricultural practice. Surveys of 33 paddy fields were conducted in the Fukuoka Prefecture in 2010-2011. Data regarding influential factors on panicle number, such as solar radiation, water temperature, and exchangeable ammonium (eNHJ content in the soil, were collected and used for building the model as candidates of the explanatory variable. As the results, eNH, content in the soil at the beginning of tillering stage and accumulated amount of daily solar radiation during the tillering stage were selected as explanatory variables. The adjusted coefficient of determination was 0.448 and RMSECV was 2.49. In the prediction model, eNH, content in the soil at the beginning of the tillering stage was selected as an explanatory variable to represent inorganic nitrogen supply. In comparison, this variable does not reflect the inorganic nitrogen supplied throughout the tillering stage. This difference resulted in a large error in the field with organic fertilizer application, as the manner of inorganic nitrogen release is different to that of typical fields in the survey area that are subject-ed to chemical fertilizer application.

  • Monitoring of Hydraulic Gradient in Agricultural Land-use using Grid Wireless Sensor Network Reviewed International journal

    Soetiarso, L. Goenadi, S., Andri P.N., Okayasu, T.

    Proceeding on International Workshop on ICT in Geo-Engineering   2012.5

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  • Finite Element Analysis of Corrugated Board under Bending Stress

    Jongmin PARK, Ghiseok KIM, Soonhong KWON, Sungwon CHUNG, Soongoo KWON, Wonsick CHOI, Muneshi Mitsuoka, Eiji INOUE, Takashi OKYASU, Jungseob CHOE.

    Journal of the Faculty of Agriculture Kyushu University   2012.2

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    Repository Public URL: http://hdl.handle.net/2324/22070

  • Finite element analysis of corrugated board under bending stress Reviewed

    Jongmin Park, Ghiseok Kim, Soonhong Kwon, Sungwon Chung, Soongoo Kwon, Wonsick Choi, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu, Jungseob Choe

    Journal of the Faculty of Agriculture, Kyushu University   57 ( 1 )   181 - 188   2012.2

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    Corrugated board is an engineering structure, whose strength characteristics depend on the cross-section geometry and the material properties of liner and corrugated medium. Therefore, the board combination (combination of material for preparing corrugated board) of corrugated boards should be optimized with considering the quality characteristics of corrugated board demanded to achieve the optimum packaging design. The board combinations of corrugated boards can be determined by employing the configuration method for the paperboard stiffness and the basis weight. The results of board combinations can greatly affect the buckling resistance and compression strength of the box. 11,15 In order to analyze the effect of the configuration method for the board stiffness and the basis weight on the flexural stiffness of corrugated board, we performed experiments based on cost- and time-consuming procedures. However, by using a simulation method such as finite element analysis (FEA) has the advantages such as saving of the time and cost in experiments and sample production as well as detailed analysis by adjusting several parameters. In the case of the simulation method, the estimation of reliability and reproducibility of the results should be strongly considered. In this study, we observed the strength-optimal design conditions for the corrugated board combinations by analyzing the flexural stiffness index (FSI). The FEA method was used in the study using the four-point loading conditions. We found that the difference between the FEA result and the test results were approximately 18-31%. However, it was estimated that the variations in FSI estimated by using both methods are similar. Therefore, we expect that the flexural balance for different board combinations would be successfully analyzed on the basis of the qualitative comparison of FSI values corresponding to the combinations when the stiffness for each of the liner and the corrugating medium are assumed to be with 2-3 levels.

  • Collision vibration characteristics with interspace in knife driving system of combine harvester Reviewed

    Takashi Fukushima, Eiji Inoue, Mitsuoka Muneshi, Takashi Okayasu, Kunio Sato

    Engineering in Agriculture, Environment and Food   5 ( 3 )   115 - 120   2012.1

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    It is necessary to develop a design theory of the knife driving system of combine harvesters in order to derive the control parameters of the balance weights used for vibration reduction. A collision vibration model of the knife driving system that is equipped with a slider-crank mechanism was constructed in order to examine the influence of the interspace that arises at the joint of the drive knife and the end of the link arm. The simulation result revealed that the harmonic frequency components varied with an increase in the width of the interspace although the highest harmonic frequency in the simulation without the interspace was three times the crank wheel rotation frequency. However, the vibration reduction by the balance weight was not dependent on the width of the interspace.

    DOI: 10.1016/S1881-8366(12)80024-3

  • Study on knowledge management platform about the field of agricultural infomatization

    Eiji Aoki, Ken Kudo, Akira Fukuda, Tsuneo Nakanishi, Shigeaki Tagashira, Takashi Okayasu, Naoyuki Tsuruda, Satoru Yamasaki, Yasuhito Imura

    2012 6th International Conference on Complex, Intelligent, and Software Intensive Systems, CISIS 2012 Proceedings - 2012 6th International Conference on Complex, Intelligent, and Software Intensive Systems, CISIS 2012   705 - 710   2012.1

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    In the region of Japan, broadband network and informatization have spread. However the field of agriculture has not come willingly. The infrastructure that has not been enough in mountainous areas, but various initiatives of computerization are being started using production and distribution as the subjects. Since this began in reality, there are still insufficient matters that have been resolved in regards to the technical validations and cost effectiveness. Therefore necessitates pouring in a tremendous amount of expertise, possibility is ICT and its related technologies of sensors. In our research and developments, we create demo hardware for the experiment using in the farm collected data. On the other hand, making study group with farmers for accumulation of data and experience. That visualized information configure to the platform of knowledge management.

    DOI: 10.1109/CISIS.2012.149

  • Turbulent flow characteristics of the cleaning wind in combine harvester Reviewed

    Yuko Ueka, Masami Matsui, Eiji Inoue, Ken Mori, Takashi Okayasu, Mitsuoka Muneshi

    Engineering in Agriculture, Environment and Food   5 ( 3 )   102 - 106   2012.1

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    The flight of separated straws is thought to affect the cleaning wind of a combine harvester. To comprehend the turbulent flow characteristics of the cleaning wind and its passage through the grains, the cleaning wind velocity is measured by particle image velocimetry and laser Doppler velocimetry. The flow of the cleaning wind is blocked by the grains, and therefore the distribution of wind velocity changes. It is found that the energy loss of the cleaning wind is not a result of turbulent flow. The wall friction and the pressure change observed as a result of the shape and the friction loss in the grains are the main considerations while calculating the energy loss of the cleaning wind in combine harvester.

    DOI: 10.1016/S1881-8366(12)80022-X

  • Characteristics of Vibration Transmissibility for Corrugated Paperboard

    Jongmin PARK, Ghiseok KIM, Hakjin KIM, Soongoo KWON, Muneshi Mitsuoka, Eiji INOUE, Takashi OKYASU, Jungseob CHOE.

    Journal of the Faculty of Agriculture Kyushu University   2011.11

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    Repository Public URL: http://hdl.handle.net/2324/20328

  • Prediction of the vibration characteristics of half-track tractor considering a three-dimensional dynamic model Reviewed

    M. A. Rabbani, T. Tsujimoto, Mitsuoka Muneshi, Eiji Inoue, Takashi Okayasu

    Biosystems Engineering   110 ( 2 )   178 - 188   2011.10

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    A dynamic three-dimensional model was constructed for a half-track tractor that considers its bounce, pitch, and roll motions in order to clarify the tractor's vibration characteristics. Driving experiments were conducted in which the tractor was driven on a solid asphalt road surface in order to investigate its vibration characteristics and to verify the validity of an analysis based on motion equations that were formulated from the proposed dynamic model. The experiments were conducted with a half-track tractor apparatus equipped with twelve accelerometers for the measurement of 6 DOF of acceleration of the tractor's centre of gravity. The discrete time series of the measured data was resolved and reconstructed by wavelet analysis. The model was verified using the fixed lug phase difference between the left and the right crawler systems for each combination of three location arrangements of the track rollers and seven levels of tractor speed. Results showed that the acceleration of the centre of gravity for the bounce, pitch, and roll motions was at a minimum when the track rollers were set equidistant from one another. The acceleration caused by the bounce and pitch motions decreased with an increase in the lug phase difference, while the acceleration caused by the roll motion increased with an increase in the lug phase difference. The results further suggested that the proposed three-dimensional dynamic model could be improved by incorporating into it the lug phase differences that change during actual tractor driving, instead of a constant lug phase difference.

    DOI: 10.1016/j.biosystemseng.2011.07.013

  • Prediction of the vibration characteristics of half-traced tractor condering a three-dimensional dynamic model Reviewed International journal

    M.A. Rabbani, T. Tsujimoto, M. Mitsuoka, E. Inoue, T. Okayasu

    Biosystems Enginering   2011.9

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  • Characteristics of vibration transmissibility for corrugated paperboard Reviewed

    Jongmin Park, Ghiseok Kim, Hakjin Kim, Soongoo Kwon, Muneshi Mitusoka, Eiji Inoue, Takashi Okayasu

    Journal of the Faculty of Agriculture, Kyushu University   56 ( 2 )   327 - 333   2011.9

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    Corrugated fiberboard are typically lightweight and inexpensive with high stiffness-to-weight and strength-to-weight ratios as an environmental-friendly packaging materials. In order to optimize the application of corrugated paperboard for packaging cushioning materials, it is essential that both a vibration transmissibility test and drop shock test be completed for the transmissibility-frequency curve and dynamic cushion curve respectively. This paper deals with the characterization of properties of corrugated paperboard relevant to its application for protective packaging in transportation, such as vibration transmissibility, resonant frequency, damping ratio, and maximum dynamic stress. The main feature of the paper is the evaluation on the vibration transmissibility of corrugated paperboard with corrugation shape and the equilibrium atmospheric conditions by a sinusoidal sweep vibration test. Additionally, damping ratio and maximum dynamic stress were evaluated by linear vibration theory. All the works provide basic data relevant to its application for protective packaging in transportation.

  • 転輪とゴム履帯との非線形作用特性を考慮したセミクローラ式トラクタの力学モデル Reviewed

    光岡宗司, 武岡達, 辻本規, 井上英二, 岡安崇史, 崔重燮

    農業機械学会九州支部誌   2011.8

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  • Feasibility study on field monitoring and work recording system in agriculture

    Takashi Okayasu, Hiromichi Yoshida, Tomohiro Miyazaki, Teruaki Nanseki, Mitsuoka Muneshi, Eiji Inoue

    American Society of Agricultural and Biological Engineers Annual International Meeting 2011 American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011   2   1652 - 1662   2011.3

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    Simple field monitoring system for optimizing and improving agricultural production process and management is developed by the built-in mail sender data logger unit with some weather and field monitoring sensors. In this monitoring system, all the monitoring data are once transferred and stored to mail servers. Thereafter the data are transferred periodically to the agricultural information database system. The database system was fully developed using open software such as apache (web server), MySQL, PHP, Java, CMS (Contents Management System) and so on. The stability of the monitoring system was verified using more than 20 monitoring units at four test sites where weather, crop type and farm size are different. On the other hand, work recording system to manage and optimize current production process was also developed and integrated to the developed database system. A list of farming processes and schedules was arranged flexibly by a farmer thorough a web browser. All the process data were entered into the information database by using mobile device and/or PC. The availability and validity of the developed recording system were verified by feasibility studies in the real farming sites.

  • Prediction of compaction behavior of heavy clayey soil beneath an off-road vehicle

    Tomohiro Miyazaki, Takashi Okayasu, Eiji Inoue

    American Society of Agricultural and Biological Engineers Annual International Meeting 2011 American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011   4   2666 - 2675   2011.3

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    Soil compaction is one of the major subjects in a well-mechanized modern agricultural system. In order to reduce the risk of soil compaction, the mechanical impacts to topsoil and subsoil during agricultural machinery operations have to be controlled. Soil compaction test using an off-road vehicle was conducted in the reclamation farmland at Isahaya bay, Nagasaki, Japan. The farmland was formed by sedimentary heavy clayey soil having high water-holding capacity and strong cohesion. In all the tests, the penetration resistance (cone index) of the soil and the bulk density before and after the vehicle running was measured in the field. The detail of soil mechanical properties was obtained from typical soil tests such as the standard compression, oedometer and triaxial compression test, respectively. On the other hand, an unconventional elastoplastic constitutive model for soils having the structure and cohesion was proposed by the superloading-yield/subloading surface model with Hashiguchi and Mase concept (2007). The validity of the model was evaluated by comparisons with the test data mentioned above.

  • Modeling of soil displacement and soil strain distribution under the traveling wheel

    Khwantri Saengprachatanarug, Masami Ueno, Eizo Taira, Takashi Okayasu

    17th International Conference of the International Society for Terrain Vehicle Systems 2011, ISTVS 2011 17th International Conference of the International Society for Terrain Vehicle Systems 2011, ISTVS 2011   12 - 24   2011.3

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    The empirical Gaussian-based mathematical model of soil displacement increment under the traveling wheel was extended to be applicable to any depth of soil layer under the ground contact surface of the wheel. The unknown coefficients were obtained by least mean-square fitting with the soil displacement curve measured through laboratory sophisticated soil bin test. Then those coefficients were re-derived as a function of depth. The movement of soil particles at the ground contact surface was modeled by dividing into 2 kinds; first, the free movement of soil particles before contact with the wheel and the movement of the particles after they are separated from the wheel surface and the second type represent soil movement during attachment to the wheel surface. By combining the models for the ground contact surface of the wheel with that for all soil layers, the extended model that can describe soil displacement increment in both the vertical and horizontal directions using one equation was established. The predicted results obtained using the extended model fitted quite well with the measured values. The predicted strain increment distributions show the same trends as the measured distributions.

  • Simulation for Vertical Dynamic Loading Forces on Track Rollers of the Half-tracked Tractor Based on Nonlinear Voigt's Model, (EAEF) ,Vol.3 ,(4) ,119-126,2010.11. Reviewed International journal

    RABBANI, M.A., TAKEOKA, S., MITSUOKA, M., INOUE, E., FUKUSHIMA, T., OKAYASU, T.

    Engineering in Agriculture Environment and Food   2010.10

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  • Fluid Analysis of Cleaning Wind in Combine Harvester International journal

    Ueka, Y., Matsui, M., Inoue, E., Mori, K., Okayasu, T.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Investigation of Chilling Sensitivity and Effect of Instant Water Soaking Treatment on the Quality of Amaranth Leaves International journal

    Nakano, K., Takahashi, C., Oba, S., Shimazu, T., Okayasu, T.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Three Dimension Model of Vibration Characteristics of the Half-tracked Tractor International journal

    Mitsuoka, M., Tsuzimoto, T., Ashik, R.M., Inoue , E., Fukushima, T., Okayasu, T.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Dynamic Model of Half-Tracked Tractor Considering the Nonlinear Voigt Model International journal

    Ashik, R.M., Mitsuoka, M., Takeoka, S., Inoue, E., Fukushima, T., Okayasu T.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Study on Durability Improvement of the Shallow Tillage Seeding Machine with Cutting Small Ditches - Measurement of an acting force on the bearing part of the side disk to cut small ditch International journal

    Fukami, K. Watanabe, T., Sasaki, Y., Tanio, M., Tsutiya, S., Tasaka, K., Okayasu, T., Inoue, E., Ohba, H., Kamitsuzi, N.

    Proc. 5th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)   2010.4

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  • Simulation for vertical dynamic loading forces on track rollers of the half-tracked tractor based on nonlinear Voigt's model Reviewed

    M. A. Rabbani, Susumu Takeoka, Mitsuoka Muneshi, Eiji Inoue, Takeshi Fukushima, Takashi Okayasu

    Engineering in Agriculture, Environment and Food   3 ( 4 )   119 - 126   2010.1

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    Experiments to measure the vertical dynamic loading forces acting on the track rollers of a half-tracked tractor were conducted by using strain gauges. In addition, a driving simulation model was constructed to predict the vertical dynamic loading forces acting on the track rollers as the tractor ran on an asphalt road surface. A twodimensional model to evaluate the vibration characteristics of the half-tracked tractor is discussed. It was modified and improved by considering the linear and nonlinear interactions of the rubber crawler with the track roller as well as the roller's location arrangement.

    DOI: 10.1016/S1881-8366(10)80003-5

  • Study on Durability Improvement of the Shallow Tillage Seeding Machine with Cutting Small Ditches International journal

    Fukami, K., Watanabe, T., Tanio, M., Masuda, K., Okayasu, T. Inoue, E., Kamitsuji, N., Ohba, H.

    ISTRO2009, Izmir   2009.6

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  • Dynamic model of an agricultural rubber crawler vehicle with nonlinear spring (part 1) -Investigation of the nonlinear interaction between a track roller and an agricultural rubber crawler Reviewed

    Mistsuoka, M., Inaba, S., Inoue, E., Fukushima, T., Okayasu, T., Mori, K.

    J. JSAM   2008.9

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  • Prediction and evaluation of vibration characteristics of an agricultural rubber crawler vehicle equipped with movable track rollers Reviewed

    Mistsuoka, M., Inaba, S., Inoue, E., Fukushima, T., Hara, S., Okayasu, T., Mori, K.

    J. JSAM   2008.9

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  • 乱流モデルを導入した選別風の数値流体解析 Reviewed

    松浦大海・古野裕子・松井正実・井上英二・森 健・岡安崇史

    農業機械学会九州支部誌   2008.8

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  • Analysis of Winnorw Mechanism on the Basis of Particle-Particle/Particle-Airflow Interaction (Part 1)-Dispersion Characteristics of Paddy Grains/Straws- Reviewed

    Furuno, Y., Matsui, M., Inoue, E., Mori, K., Okayasu, T. Fukata, R.

    J. Jpn. Soc. Agr. Mach.   2008.1

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  • Finite element analysis of particle assembly-water coupled frictional contact problem Reviewed

    S. Ozaki, K. Hashiguchi, Takashi Okayasu, D. H. Chen

    CMES - Computer Modeling in Engineering and Sciences   18 ( 2 )   101 - 119   2007.4

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    In order to analyze precisely not only the elastoplastic deformation phenomenon of saturated particle assembly such as soils, grains, powdered and tablet medicines or three dimensional cellular materials, but also the frictional sliding phenomenon between saturated particle assembly and other bodies, a particle assembly-water coupled finite element program, that incorporates both the subloading surface and the subloading-friction models, is developed. Subsequently, simulations of the compaction behavior of saturated particle assembly under strain rate control are performed. It is revealed by the numerical experiment adopting the finite element program that the frictional sliding behavior of the contact boundary influences both the deformation behavior and the pore water flow behavior in the saturated particle assembly.

  • Overstress model with tangential-viscoplastic strain rate by incorporation of overstress tensor Reviewed

    Koichi Hashiguchi, Takashi Okayasu, Toshiyuki Ozaki

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   73 ( 1 )   151 - 158   2007.1

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    The elastoplastic stress is first defined as the stress which evolves as the actual strain rate is induced in an imaginary quasi-static process of elastoplastic deformation, while internal variables evolve with the viscoplastic strain rate calculated by the viscoplastic constitutive equation. Further, the novel variable "overstress tensor" reaching the current stress from the elastoplastic stress is defined. Then, the overstress model is extended so as to describe also the tangential viscoplastic strain rate induced by the overstress tensor component tangential to the yield surface. Furthermore, the viscoplastic strain rate due to the change of stress inside the yield surface is incorporated by adopting the concept of the subloading surface which falls within the framework of the unconventional elastoplasticity describing the smooth elastic-plastic transition fulfilling the smoothness and continuity conditions.

  • Deformation behavior of Shirasu soil by the extended subloading surface model Reviewed

    M. Hira, K. Hashiguchi, M. Ueno, Takashi Okayasu

    Lowland Technology International   8 ( 1 )   37 - 46   2006.6

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    This study is aimed at evaluation of the deformation behavior of Shirasu soil (volcanic sandy soil) for reclamation and embankment construction, using elastoplastic constitutive equation based on the subloading surface model with the rotational hardening. Test results for isotropic consolidation and monotonic/cyclic loading-unloading compression with several lateral stresses under the drained conditions for various initial void ratios are reported. Further, the simulation by the constitutive equation based on the extended subloading surface model is compared with the test results. High applicability of the constitutive equation for the prediction of mechanical behavior of Shirasu soil for a geo-material at the lowland in the southern Kyushu is verified by the comparison.

  • セミクローラ式トラクタの転動抵抗を考慮した振動解析モデルとその評価 Reviewed

    福島崇志,岡田淳,井上英二,光岡宗司,稲葉繁樹,岡安崇史

    農業機械学会誌   2006.1

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  • Mathematical models for soil displacement under a rigid wheel Reviewed

    Koichiro Fukami, Masami Ueno, Koichi Hashiguchi, Takashi Okayasu

    Journal of Terramechanics   43 ( 3 SPEC. ISS. )   287 - 301   2006.1

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    Soil-wheel interaction especially soil deformation caused by the wheel motion was investigated experimentally using a sophisticated soil bin test apparatus and an on-line measurement system for soil displacement. Based on these test results, characteristics of soil deformation were summarized focusing on the behavior and distribution of displacement increment vectors. Mathematical models were examined in order to describe the displacements of soil particles. Properties of the displacement loci are described. The magnitude of the displacement increment vector, its horizontal and vertical components are discussed, and characteristics of these distributions with respect to the relative horizontal distance from the vertical centerline of the wheel to the target point are clarified. Shapes of these distribution curves were closely similar to those of the derivatives of a Gaussian function. A distribution curve of the horizontal displacement increment had two peaks and that of the vertical one had three peaks. Based on the results, mathematical models for those displacement increments were proposed by employing a Gaussian function through multiplication of a linear function and a quadratic function. Predicted distributions and displacement loci of the models agreed with high accuracy to the measured values. The mathematical models were extended taking into consideration the wheel slip. The predicted distributions according to test conditions agreed very well to the measured results.

    DOI: 10.1016/j.jterra.2005.05.005

  • Extended tangential-subloading surface model for general loading behavior of soils Application to nonproportional loadings Reviewed

    Hideki Setouchi, Koichi Hashiguchi, Takeshi Shikanai, Takashi Okayasu

    Soils and Foundations   46 ( 4 )   449 - 463   2006.1

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    The conventional elastoplastic model premising that the interior of yield surface is a purely elastic domain is incapable of describing the plastic deformation by the rate of stress inside the yield surface. Thus, it is inapplicable to the description of cyclic loading behavior. Besides, the traditional elastoplastic model is independent of the stress rate component tangential to the yield surface. Therefore, it predicts an unrealistically high stiffness modulus for non- v proportional loading process deviating significantly from proportional one. The extended tangential-subloading surface model proposed by Hashiguchi and Tsutsumi (2001) would be capable of describing the cyclic loading behavior and the inelastic strain rate induced by the stress rate component tangential to the subloading surface. In this article, the extended tangential-subloading surface model is applied to the prediction of deformation behavior of sands subjected to various loading ranging from proportional to cyclic nonproportional loading. The validity is verified by comparing with the various test data. Then, it is revealed that the incorporation of the strain rate due to the stress rate component tangential to the subloading surface is of importance for the description of nonproportional loading behavior.

    DOI: 10.3208/sandf.46.449

  • Extended tangential-subloading surface model for general loading behavior of soils: application to nonproportional loadings Reviewed International journal

    Setouchi, H., Hashiguchi, K., Shikanai, T., Okayasu, T.

    Soils and Foundations.   2006.1

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  • 選別風を受ける藁の飛散範囲シミュレーション. Reviewed

    古野裕子,松井正実,井上英二,森健,岡安崇史

    農業機械学会誌   2006.1

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  • Vibration Characteristics and Modeling of Knife Driving System of Combine Harvester(Part1)-Frequency Resolution of Time Series by Wavelet Analysis- Reviewed

    Fukushima, T., Inoue, E., Mitsuoka, M., Matsui, M., Okayasu, T.

    J. Jpn. Soc. Agr. Mach.   2006.1

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  • Vibration Characteristics and Modeling of Knife Driving System of Combine Harvester(Part2)-Recurrence Plots and Trajectory Considering Frequency Components- Reviewed

    Fukushima, T., Inoue, E., Mitsuoka, M., Matsui, M., Okayasu, T.

    J. Jpn. Soc. Agr. Mach.   2006.1

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  • Vibration Characteristics and Modeling of Knife Driving System of Combine Harvester(Part3)-A Dynamic Model of the Knife Driving System- Reviewed

    Fukushima, T., Inoue, E., Mitsuoka, M., Matsui, M., Okayasu, T.

    J. Jpn. Soc. Agr. Mach.   2006.1

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  • Rate-dependent inelastic constitutive equation The extension of elastoplasticity Reviewed

    K. Hashiguchi, Takashi Okayasu, K. Saitoh

    International Journal of Plasticity   21 ( 3 )   463 - 491   2005.3

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    A rate-dependent inelastic constitutive equation is formulated by extending the elastoplastic constitutive equation so as to retain the latter's mathematical structure and thus reduce to the latter equation at an infinitesimal rate of deformation. That structure differs substantially from that of the over-stress model, the best-known rate-dependent inelastic constitutive model. The proposed constitutive model is a type of superposition model, which is premised on the additive decomposition of the inelastic strain rate into the plastic and creep strain rates. The plastic strain rate is formulated so as to become suppressed as the rate of deformation increases but is induced even at the infinite rate of deformation. This is the distinguishing features of this model from the existing superposition models. The present model can describe realistically the rate-dependent inelastic deformation for a wide range of strain rates. On the other hand, the over-stress model cannot predict appropriately the difference of mechanical response due to the rate of deformation, especially being inapplicable to the description of deformation at high rate of deformation as known from the unrealistic prediction of the infinite strength at an infinite rate of deformation. The proposed model is applied to various metals, and its adequacy is verified through comparisons with various test data under a wide variety of strain rates and temperatures.

    DOI: 10.1016/j.ijplas.2004.04.001

  • Unconventional friction theory based on the subloading surface concept Reviewed

    K. Hashiguchi, S. Ozaki, Takashi Okayasu

    International Journal of Solids and Structures   42 ( 5-6 )   1705 - 1727   2005.3

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    A constitutive model for the description of friction phenomena is formulated by incorporating the concept of the subloading surface [Hashiguchi, K., 1978. Plastic constitutive equations of granular materials. In: Proc. US-Japan Seminar Continuum Mech. Stast. Appr. Mech. Granular Materials, Sendai, pp. 321-329; Hashiguchi, K., 1980. Constitutive equations of elastoplastic materials with elastic-plastic transition. J. Appl. Mech. (ASME) 47 (1980) 266-272; Hashiguchi, K., 1989. Subloading surface model in unconventional plasticity. Int. J. Solids Struct. 25 (1989) 917-945] falling within the framework of unconventional plasticity [Drucker, D.C., 1988. Conventional and unconventional plastic response and representation. Appl. Mech. Rev. (ASME) 41 (1988) 151-167], which excludes the premise that the interior of a yield surface is a purely elastic domain. It describes the nonlinear relationship between the normal and tangential tractions on a contact surface. Furthermore, it predicts the gradual progress of sliding displacement with an increase in traction, and thus a judgment regarding the fulfillment of the sliding condition is not necessary. This is in contrast to a conventional friction model with a sliding surface enclosing an elastic domain, in which such gradual progress cannot be described and the judgment is required. Thus, a rough numerical calculation with large loading steps even in the explicit numerical method is allowed in the present friction model. In addition, typical friction boundary value problems are analyzed by the finite element method incorporating the present friction model.

    DOI: 10.1016/j.ijsolstr.2004.08.006

  • Rate-dependent inelastic constitutive equation The extension of elastoplasticity Reviewed

    K. Hashiguchi, Takashi Okayasu, K. Saitoh

    International Journal of Plasticity   21 ( 3 )   463 - 491   2005.3

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    A rate-dependent inelastic constitutive equation is formulated by extending the elastoplastic constitutive equation so as to retain the latter's mathematical structure and thus reduce to the latter equation at an infinitesimal rate of deformation. That structure differs substantially from that of the over-stress model, the best-known rate-dependent inelastic constitutive model. The proposed constitutive model is a type of superposition model, which is premised on the additive decomposition of the inelastic strain rate into the plastic and creep strain rates. The plastic strain rate is formulated so as to become suppressed as the rate of deformation increases but is induced even at the infinite rate of deformation. This is the distinguishing features of this model from the existing superposition models. The present model can describe realistically the rate-dependent inelastic deformation for a wide range of strain rates. On the other hand, the over-stress model cannot predict appropriately the difference of mechanical response due to the rate of deformation, especially being inapplicable to the description of deformation at high rate of deformation as known from the unrealistic prediction of the infinite strength at an infinite rate of deformation. The proposed model is applied to various metals, and its adequacy is verified through comparisons with various test data under a wide variety of strain rates and temperatures.

    DOI: 10.1016/j.ijplas.2004.04.001

  • Unconventional friction theory based on the subloading surface concept Reviewed

    K. Hashiguchi, S. Ozaki, Takashi Okayasu

    International Journal of Solids and Structures   42 ( 5-6 )   1705 - 1727   2005.3

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    A constitutive model for the description of friction phenomena is formulated by incorporating the concept of the subloading surface [Hashiguchi, K., 1978. Plastic constitutive equations of granular materials. In: Proc. US-Japan Seminar Continuum Mech. Stast. Appr. Mech. Granular Materials, Sendai, pp. 321-329; Hashiguchi, K., 1980. Constitutive equations of elastoplastic materials with elastic-plastic transition. J. Appl. Mech. (ASME) 47 (1980) 266-272; Hashiguchi, K., 1989. Subloading surface model in unconventional plasticity. Int. J. Solids Struct. 25 (1989) 917-945] falling within the framework of unconventional plasticity [Drucker, D.C., 1988. Conventional and unconventional plastic response and representation. Appl. Mech. Rev. (ASME) 41 (1988) 151-167], which excludes the premise that the interior of a yield surface is a purely elastic domain. It describes the nonlinear relationship between the normal and tangential tractions on a contact surface. Furthermore, it predicts the gradual progress of sliding displacement with an increase in traction, and thus a judgment regarding the fulfillment of the sliding condition is not necessary. This is in contrast to a conventional friction model with a sliding surface enclosing an elastic domain, in which such gradual progress cannot be described and the judgment is required. Thus, a rough numerical calculation with large loading steps even in the explicit numerical method is allowed in the present friction model. In addition, typical friction boundary value problems are analyzed by the finite element method incorporating the present friction model.

    DOI: 10.1016/j.ijsolstr.2004.08.006

  • Rate-dependent inelastic constitutive equation The extension of elastoplasticity Reviewed

    K. Hashiguchi, Takashi Okayasu, K. Saitoh

    International Journal of Plasticity   21 ( 3 )   463 - 491   2005.3

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    A rate-dependent inelastic constitutive equation is formulated by extending the elastoplastic constitutive equation so as to retain the latter's mathematical structure and thus reduce to the latter equation at an infinitesimal rate of deformation. That structure differs substantially from that of the over-stress model, the best-known rate-dependent inelastic constitutive model. The proposed constitutive model is a type of superposition model, which is premised on the additive decomposition of the inelastic strain rate into the plastic and creep strain rates. The plastic strain rate is formulated so as to become suppressed as the rate of deformation increases but is induced even at the infinite rate of deformation. This is the distinguishing features of this model from the existing superposition models. The present model can describe realistically the rate-dependent inelastic deformation for a wide range of strain rates. On the other hand, the over-stress model cannot predict appropriately the difference of mechanical response due to the rate of deformation, especially being inapplicable to the description of deformation at high rate of deformation as known from the unrealistic prediction of the infinite strength at an infinite rate of deformation. The proposed model is applied to various metals, and its adequacy is verified through comparisons with various test data under a wide variety of strain rates and temperatures.

    DOI: 10.1016/j.ijplas.2004.04.001

  • Unconventional friction theory based on the subloading surface concept Reviewed

    K. Hashiguchi, S. Ozaki, Takashi Okayasu

    International Journal of Solids and Structures   42 ( 5-6 )   1705 - 1727   2005.3

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    A constitutive model for the description of friction phenomena is formulated by incorporating the concept of the subloading surface [Hashiguchi, K., 1978. Plastic constitutive equations of granular materials. In: Proc. US-Japan Seminar Continuum Mech. Stast. Appr. Mech. Granular Materials, Sendai, pp. 321-329; Hashiguchi, K., 1980. Constitutive equations of elastoplastic materials with elastic-plastic transition. J. Appl. Mech. (ASME) 47 (1980) 266-272; Hashiguchi, K., 1989. Subloading surface model in unconventional plasticity. Int. J. Solids Struct. 25 (1989) 917-945] falling within the framework of unconventional plasticity [Drucker, D.C., 1988. Conventional and unconventional plastic response and representation. Appl. Mech. Rev. (ASME) 41 (1988) 151-167], which excludes the premise that the interior of a yield surface is a purely elastic domain. It describes the nonlinear relationship between the normal and tangential tractions on a contact surface. Furthermore, it predicts the gradual progress of sliding displacement with an increase in traction, and thus a judgment regarding the fulfillment of the sliding condition is not necessary. This is in contrast to a conventional friction model with a sliding surface enclosing an elastic domain, in which such gradual progress cannot be described and the judgment is required. Thus, a rough numerical calculation with large loading steps even in the explicit numerical method is allowed in the present friction model. In addition, typical friction boundary value problems are analyzed by the finite element method incorporating the present friction model.

    DOI: 10.1016/j.ijsolstr.2004.08.006

  • Unconventional friction theory based on the subloading surface concept Reviewed International journal

    Hashiguchi, K., Ozaki, S. and Okayasu, T.

    Int. J. Solids Struct.   2005.1

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  • Deformation behavior analysis in tunnel excavation by elastoplastic finite element method based on subloading surface model International journal

    Ozaki, T., Okayasu T., Hashiguchi, K. , Yajima, D.

    Dislocations, Plasticity and Metal Forming (Proc. Plasticity ’05: 11th Int. Symp. Plasticity and its Application)   2005.1

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  • Finite element analyses of frictional contact problems by the subloading-friction model Reviewed

    Shingo Ozaki, Koichi Hashiguchi, Takashi Okayasu, Naoki Hotta

    Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   70 ( 7 )   995 - 1002   2004.7

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    The subloading-friction model is the unconventional elastoplastic friction model which allows the slip displacement due to the contact stress below the sliding surface. It is capable of describing the nonlinear relationship between the normal and the tangential stress on the contact surface and a gradual progress of relative tangential displacement with the increase of the contact stress. In this paper, the compression problem of rectangular block, the indentation problem of circular rigid roller and the cyclic friction problem for the elastic body under the plane strain condition are analyzed by the finite element program incorporating the subloading-friction model. It is revealed that the distribution of contact stress is predicted appropriately and the accumulation of relative displacement due to the cyclic loading of contact tangential traction below the sliding condition can be described. Besides, the computation time is shortened by the present finite element program compared with programs with the conventional friction model.

  • Finite element analyses of frictional contact problems by the subloading-friction model Reviewed

    Shingo Ozaki, Koichi Hashiguchi, Takashi Okayasu, Naoki Hotta

    Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   70 ( 7 )   995 - 1002   2004.7

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    The subloading-friction model is the unconventional elastoplastic friction model which allows the slip displacement due to the contact stress below the sliding surface. It is capable of describing the nonlinear relationship between the normal and the tangential stress on the contact surface and a gradual progress of relative tangential displacement with the increase of the contact stress. In this paper, the compression problem of rectangular block, the indentation problem of circular rigid roller and the cyclic friction problem for the elastic body under the plane strain condition are analyzed by the finite element program incorporating the subloading-friction model. It is revealed that the distribution of contact stress is predicted appropriately and the accumulation of relative displacement due to the cyclic loading of contact tangential traction below the sliding condition can be described. Besides, the computation time is shortened by the present finite element program compared with programs with the conventional friction model.

  • Finite element analyses of frictional contact problems by the subloading-friction model Reviewed

    Shingo Ozaki, Koichi Hashiguchi, Takashi Okayasu, Naoki Hotta

    Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   70 ( 7 )   995 - 1002   2004.7

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    The subloading-friction model is the unconventional elastoplastic friction model which allows the slip displacement due to the contact stress below the sliding surface. It is capable of describing the nonlinear relationship between the normal and the tangential stress on the contact surface and a gradual progress of relative tangential displacement with the increase of the contact stress. In this paper, the compression problem of rectangular block, the indentation problem of circular rigid roller and the cyclic friction problem for the elastic body under the plane strain condition are analyzed by the finite element program incorporating the subloading-friction model. It is revealed that the distribution of contact stress is predicted appropriately and the accumulation of relative displacement due to the cyclic loading of contact tangential traction below the sliding condition can be described. Besides, the computation time is shortened by the present finite element program compared with programs with the conventional friction model.

  • 下負荷面モデルによる繰返し円形応力負荷を受ける砂の変形挙動の予測および接線応力速度の効果 Reviewed

    瀬戸内秀規,橋口公一,鹿内健志,岡安崇史

    応用力学論文集(土木学会)   2004.1

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  • Proposal of a phenome-nological friction model incorporating the subloading surface concept Reviewed International journal

    Hashiguchi, K., Ozaki, S., Okayasu, T. and Zaigo, T.

    Terramechanics   2004.1

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    Proposal of a phenome-nological friction model incorporating the subloading surface concept

  • Friction theory based on the subloading surface concept Reviewed

    Koichi Hashiguchi, Takashi Okayasu, Shingo Ozaki

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   69 ( 2 )   295 - 301   2003.2

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    A constitutive model for the description of friction phenomenon is formulated by incorporating the subloading surface concept proposed for the formulation of the unconventional plastic constitutive equation. It describes the nonlinearity of the relationship between the normal and the tangential forces on the contact boundary. Further, it describes the smooth relation of the contact force and the sliding distance, i.e. the smooth elastic-plastic transition and the thus the judgment for the fulfillment of friction condition is not needed, which is required in the conventional friction theory. Thus, a rough numerical calculation with large loading steps is allowed in the present model.

  • Generalized rate-dependent inelastic constitutive equation (application to metals) Reviewed

    Takashi Okayasu, Koichi Hashiguchi

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A   69 ( 2 )   288 - 294   2003.2

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    The rate-dependent inelastic constitutive equation was formulated by extending the subloading model such that the plastic strain rate is suppressed with the increase of strain rate and incorporating the creep strain rate in the previous article. It retains the mathematical structure of the subloading surface model and thus reduces to the model itself at infinitesimal strain rate. It belongs to the superposition model premising on the additive decomposition of the inelastic strain rate into the plastic and the creep strain rates. It is applied to metals, and its adequacy is verified comparing with various test data at a wide variety of strain rates and temperatures.

  • 砂地盤における剛性車輪下の土の変形(第2報) Reviewed

    深見公一郎,上野正実,橋口公一,岡安崇史

    農業機械学会誌   2003.1

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  • 砂地盤における剛性車輪下の土の変形(第1報) Reviewed

    深見公一郎,上野正実,橋口公一,岡安崇史

    農業機械学会誌   2003.1

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  • Deformation behavior of "Shirasu" and its prediction by the subloading surface model Reviewed

    Mizuki Hira, Koichi Hashiguchi, Takashi Okayasu, Koichi Miwa

    Soils and Foundations   42 ( 5 )   37 - 46   2002.10

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    The description of the deformation behavior of Shirasu (volcanic sandy soil) by the elastoplastic constitutive equation is studied adopting a subloading surface model with rotational hardening. Also, test results for isotropic consolidation and triaxial compression with several lateral stresses under the drained and the undrained conditions for various initial void ratios are reported. Further, simulation by the constitutive equation is compared with the test results. High ability of the constitutive equation for the prediction of mechanical behavior of Shirasu is verified by the comparison.

  • Peculiar response of plastically compressive materials with associated and non-associated flow rule International journal

    Tsutsumi, S., Hashiguchi, K., Okayasu, T., Saitoh, K.

    Plasticity, Damage and Fracture at Macro, Micro and Nano Scales (Proc. Plasticity ’02: 9th Int. Symp. Plasticity and its Application   2002.1

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  • Evaluation of typical conventional and unconventional plasticity models for prediction of softening behaviour of soils Reviewed

    K. Hashiguchi, K. Saitoh, Takashi Okayasu, S. Tsutsumi

    Geotechnique   52 ( 8 )   561 - 578   2002.1

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    Conventional elastoplasticity is based on the idealisation that the interior of the yield surface is a purely elastic domain. This idealisation would not lead to unrealistic prediction of hardening behaviour, but would cause unrealistic prediction of softening behaviour, which is observed typically in overconsolidated soils, whereas metals and normally consolidated soils exhibit hardening behaviour. By contrast, unconventional elastoplasticity that does not use this idealisation makes it possible to describe the plastic deformation due to the change of stress inside the yield surface exhibiting a smooth elastic-plastic transition, and is thus expected to describe softening behaviour more accurately. In this paper the capabilities of conventional and unconventional elastoplasticity for describing softening behaviour are examined, comparing the Drucker-Prager model as the conventional one and the subloading surface model as the unconventional one for predicting the deformation behaviour of overconsolidated soils. It is concluded that unconventional elastoplasticity has to be adopted for predicting softening behaviour.

    DOI: 10.1680/geot.2002.52.8.561

  • Dependency of inelastic flow directions on stress rate directions, Plasticity International journal

    Tsutsumi, S., Hashiguchi, K., Sugimoto, M., Takezoe, R., Okayasu, T.

    Plasticity, Damage and Fracture at Macro, Micro and Nano Scales (Proc. Plasticity ’02: 9th Int. Symp. Plasticity and its Application)   2002.1

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  • Post-localization analysis by the subloading surface model with tangential stress rate effect Reviewed

    Koichi Hashiguchi, Alexander Y. Protasov, Takashi Okayasu

    Materials Science Research International   7 ( 4 )   265 - 272   2001.12

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    Various constitutive models have been applied to the analyses of localized deformation of solids. However, most of them fall within the framework of the conventional plasticity premising that the interior of yield surface is an elastic domain and obeys the plastic potential theory in which the plastic stretching is independent of the stress rate component tangential to the yield surface. Therefore, they predict a stiff elastic response until the stress reaches the yield state and further a stiff elastoplastic response after yielding. On the other hand, the subloading surface model falling within the unconventional plasticity would be only the model capable of describing pertinently the plastic deformation induced by the rate of stress within the yield surface in general loading process including the unloading, reloading and inverse loading. Further, the numerical calculation by this model is quite efficient disusing the special algorism, e.g. the mean normal method and the radial return method in order to make the stress lie just on the yield surface in the plastic loading process since it contains the controlling function to make the stress approach automatically the yield surface in the plastic loading process. Further, this model is recently extended so as to describe the tangential stress rate effect, i.e. the inelastic deformation induced by the stress rate component tangential to the subloading surface. In this article the post-localized deformation of metal due to the shear band formation is analyzed by the finite element method incorporating the subloading surface model with the tangential stress rate effect. Thus, the influence of the tangential stress rate effect on the shear band formation is discussed exhibiting several examples of the deformation patterns.

  • Post-localization analysis by the subloading surface model with tangential stress rate effect Reviewed International journal

    Hashiguchi, K., Protasov, A. Y. and Okayasu, T.

    Materials Sci. Res. Int.   2001.1

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    Post-localization analysis by the subloading surface model with tangential stress rate effect

  • Subloading surface model with tangential stress rate effect and its application to soils International journal

    Hashiguchi, K., Tsutsumi, S., Okayasu, T., Saitoh, K.

    Bifurcation and Localization Theory Geomech. (IWBL'99)   2001.1

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  • Changes in soil deformation by the frictional property of a wheel with repetition travel International journal

    Fukami, K., Ueno, M., Hashiguchi, K., Okayasu, T.

    Proc. 6th Asia-Pacific Reg. Conf. Terrain Vechicle Systems   2001.1

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  • Effects of traveling speed of a wheel on the soil deformation International journal

    Fukami, K., Ueno, M., Hashiguchi, K., Okayasu, T.

    Proc. 6th Asia-Pacific Reg. Conf. Terrain Vechicle System   2001.1

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  • Mechanical response of the subloading surface model with tangential stretching Reviewed International journal

    Tsutsumi S., Hashiguchi K., Okayasu T., Saitoh K. and Sugimoto M.

    J. App. Mech. (JSCE)   2001.1

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    Mechanical response of the subloading surface model with tangential stretching

  • 接線応力速度を考慮した地盤材料の弾塑性構成式によるせん断帯発生の理論的考察 Reviewed

    橋口公一,堤成一郎,岡安崇史,斎藤公志郎

    農業機械学会誌   2000.1

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    Consideration of shear band formation by elastoplastic constitutive equation of soils with tangential stress rate effect

  • Time-dependent elastoplastic constitutive equation based on the subloading surface model and its application to soils Reviewed

    Koichi Hashiguchi, Takashi Okayasu

    Soils and Foundations   40 ( 4 )   19 - 36   2000.1

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    Various constitutive models for the description of time-dependent deformation behavior have been proposed. However, it is first verified in this article that a pertinent model applicable to the description of deformation for a wide range of stress below and over the elastic limit, i.e. the yield stress, has not been found up to the present. It should be noted that a stress goes out over the yield surface at a high rate of deformation, only elastic deformation being induced. The subloading surface model does not premise that a stress exists on the yield surface even in the plastic loading process and thus describes the plastic deformation induced by the rate of stress within the yield surface, exhibiting the smooth elastic-plastic transition. In this article the subloading surface model is extended so as to describe the time-dependence for a wide range of deformation rates by allowing the stress to go out from the yield surface based on the physical interpretation that a plastic deformation due to the mutual slip between microstructures is suppressed for the deformation at a high rate causing the increase of viscous resistance acting between the microstructures. Further, based on this, a time-dependent elastoplastic constitutive equation of soils is formulated by incorporating the secondary-consolidation phenomenon, and its ability to predict deformation behavior of soils is verified by comparisons with test data on fundamental time-dependent behavior with various deformation rates, creep and stress relaxation under the undrained condition.

    DOI: 10.3208/sandf.40.4_19

  • Precise measurement of soil deformation and fluctuation in drawbar pull for steel and rubber-coated rigid wheels Reviewed

    T. Shikanai, K. Hashiguchi, Y. Nohse, M. Ueno, Takashi Okayasu

    Journal of Terramechanics   37 ( 1 )   21 - 39   2000.1

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    The travelling performance of rigid wheels on sand stratum is measured using two kinds of surface material, i.e. steel and steel coated with rubber. A new method for measuring the displacement of soil beneath the wheel has been developed using small polyester film markers. The trajectories of soil particles beneath the wheels are approximated by an exponential function and the fluctuations in the drawbar pull are represented by a sinusoidal function. The amplitude and basic wavelength of the fluctuation in the drawbar pull are discussed for both types of wheels.

    DOI: 10.1016/S0022-4898(99)00011-7

  • Shear band analysis in soils by elastoplastic constitutive equation with tangential stress rate effect International journal

    Hashiguchi, K., Tsutsumi, S., Okayasu, T., Saitoh, K.

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications   2000.1

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  • Analysis of soil deformation beneath a wheel in the repetition travel International journal

    Fukami, K., Ueno, M., Hashiguchi, K., Okayasu, T.

    Proc. CIGR2000   2000.1

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  • Fluctuation of the drawbar pull of a wheel due to the inhomogeneous soil deformation International journal

    Fukami, K., Ueno, M., Hashiguchi, K. , Okayasu, T.

    Proc. Int. Conf. Agr. Eng.   2000.1

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  • Precise measurement of soil deformation and fluctuation in drawbar pull for steel and rubber-coated rigid wheels Reviewed International journal

    Shikanai T., Hashiguchi K., Nohse Y., Ueno M., and Okayasu T.

    J. Terramech.   2000.1

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    Precise measurement of soil deformation and fluctuation in drawbar pull for steel and rubber-coated rigid wheels

  • 稲稈の周波数応答特性に関する理論的考察 Reviewed

    井上英二,平井康丸,橋口公一,岡安崇史

    農業機械学会誌   2000.1

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  • 接線応力速度を考慮した弾塑性構成式の提案および地盤材料への適用 Reviewed

    橋口公一,堤成一郎,岡安崇史,斎藤公志郎

    農業機械学会誌   2000.1

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  • 砂地盤上における剛性車輪の走行性高精度予測モデル Reviewed

    上野正実,大嶺政朗,鹿内健志, 橋口公一,岡安崇史

    農業機械学会誌   1999.1

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  • 稲稈の力学的特性に関する一考察 Reviewed

    井上英二,金暎根,橋口公一,岡安崇史,鹿島潤

    農業機械学会誌   1998.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Time-dependent elastoplastic constitutive model Reviewed

    Koichi Hashiguchi, Xianan Wu, Takashi Okayasu, Seiichiro Tsutsumi

    Metals and Materials International   4 ( 3 )   345 - 349   1998.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    The subloading surface model does not premise that the stress exists on the yield surface and thus describes a plastic deformation even when the stress exists inside the yield surface. The measure describing the degree that the stress approaches the yield surface or goes out from the surface is involved in this model. It is extended so as to describe the time-dependent deformation behavior of materials by allowing the stress to go out from the yield surface and considering the fact that a plastic deformation requires time to occur, although an elastic deformation is induced momentarily. Further, based on it, the constitutive equation of soils is formulated by taking the secondary consolidation phenomenon into account.

  • Waveform analysis of drawbarpull of a rigid wheel by FFT International journal

    Ueno, M., Fukami, K., Shikanai, T., Hashiguchi, K., Okayasu, T.

    Proc. 5th Asia-Pacific Reg. Conf. Terrain Vechicle Systems   1998.1

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Precise prediction of the traveling performance for a rigid wheel International journal

    Ueno, M., Oomine, M., Shikanai, T., Hashiguchi, K., Okayasu, T.

    Proc. 5th Asia-Pacific Reg. Conf. Terrain Vechicle Systems   1998.1

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • The Extended Elastoplastic Constitutive Equation with Tangential Stress Rate Effect Reviewed

    Koichi Hashiguchi, Takashi Okayasu, Seiichiro Tsutsumi

    Journal of the Faculty of Agriculture, Kyushu University   42 ( 1-2 )   225 - 235   1997.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    The extension of the elastoplastic constitutive equation so as to describe the plastic stretching due to the stress rate component tangential to the yield or loading surface has been one of the most pressing problems in the elastoplasticity. To this aim, various models have been proposed in the past. However, a pertinent model applicable to a general loading process has not previously been proposed. In this article, the elastoplastic constitutive equation extended so as to describe a plastic stretching due to a stress rate component tangential to a yield or loading surface is formulated keeping a single and smooth yield surface. It would be a pertinent one which fulfills the mechanical requirements for elastoplastic constitutive equation and which is applicable to an arbitrary loading process. Based on this equation, a constitutive equation of metals with the isotropic-kinematic hardening is formulated.

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Books

  • 農業食料工学ハンドブック

    岡安崇史他(Role:Joint author)

    コロナ社  2020.6 

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    Responsible for pages:ISBN: 978-4-339-05267-1   Language:Japanese   Book type:Scholarly book

    農業機械はもとよりセンシング技術や電子制御,自動化ならびにロボット化,ICTの活用さらには環境やエネルギー,ポストハーベスト技術に加えて食料生産・流通に係わる技術分野を体系的にまとめ直し,農業食料工学の知見に資する。

  • 新スマート農業「進化する農業情報利用」

    岡安崇史他(Role:Joint author)

    農林統計出版  2019.5 

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    Responsible for pages:ISBNコード:9784897324074   Language:Japanese   Book type:Scholarly book

  • Ubiquitous Environment Control System: An Internet-of- Things–Based Decentralized Autonomous Measurement and Control System for a Greenhouse Environment

    Takehiko Hoshi, Ken-Ichiro Yasuba, Hideto Kurosaki and Takashi Okayasu(Role:Joint author)

    IntechOpen  2018.3 

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    Responsible for pages:107-123   Language:English   Book type:Scholarly book

    DOI: 10.5772/intechopen.71661

  • Smart Sensors at the IoT Frontier -Sensing and Visualization in Agriculture with Affordable Smart Devices-

    Takashi Okayasu, Andri Prima Nugroho, Daisaku Arita, Takashi Yoshinaga, Yoshiki Hashimoto, Rin-ichiro Tachiguchi(Role:Joint author)

    Springer  2017.6 

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    Responsible for pages:299-325   Language:English   Book type:Scholarly book

  • スマート農業バイブル~『見える化』で切り拓く経営&育成改革「廉価なワンボードマイコンを利用した圃場環境と植物生育状態の計測と可視化」

    岡安 崇史, アンドリ プリマ ヌグロホ, 有田大作(Role:Joint author)

    映像情報  2016.10 

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    Language:Japanese   Book type:General book, introductory book for general audience

  • 農業情報学会25周年記念出版「スマート農業」

    岡安崇史他(Role:Joint author)

    農業情報学会  2014.6 

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    Language:Japanese   Book type:Scholarly book

  • よくわかる農業施設用語解説集(農業施設学会)

    農業施設学用語解説集編集委員会編(Role:Joint author)

    農業施設学会  2012.9 

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    Responsible for pages:175頁   Language:Japanese   Book type:Scholarly book

  • 地盤工学・基礎理論シリーズ「3.土の弾塑性構成モデル」

    岡安崇史他(飛田善雄監修)(Role:Joint author)

    地盤工学会  2009.3 

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    Language:Japanese   Book type:Scholarly book

  • 地盤設計への弾塑性力学の活用に関する講習会テキスト

    岡安崇史他(Role:Joint author)

    地盤工学会九州支部  2005.9 

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    Language:Japanese   Book type:Scholarly book

  • ラズパイ・Arduino農業実験集 : Raspberry Piからはじめるカメラ撮&IoT栽培

    インターフェース編集部, 漆谷 正義 , エンヤ ヒロカズ, 岡安 崇史, 小野田 晃久, 黒崎 秀仁, 小池 誠, 須田 隼輔, 大黒 篤, 塚本 勝孝, 長井 正彦, 堀本 正文, 本多 潔, 松本 信幸, 峰野 博史, 安場 健一郎, 横山 昭義, 米本 和也

    CQ出版  2022    ISBN:9784789859882

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    Language:Japanese  

    CiNii Books

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Presentations

  • Accuracy Evaluation of Low-cost Weight Measurement Sensor for Plants

    Hamidah, A., Okayasu, T., Hoshino, Y., Inoue, E., Yasumaru, H., Mitsuoka, M., Nugroho, A.P., Sutiarso, L.

    International Symposium on Agriculture, Food, Environmental and Life Science in Asia 2019  2020.11 

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    Event date: 2019.11

    Language:English  

    Venue:Tottori   Country:Japan  

  • Informatization Agriculture in Japan Invited International conference

    Takashi OKAYASU

    The International Symposium on Agricultural and Biosystem Engineering (ISABE) 2013  2013.8 

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    Event date: 2013.8

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Yogyakarta   Country:Indonesia  

    Agriculture is dependent on climate, weather, soil conditions, and crop types. Therefore, farmers have tried to develop and improve their own cultivation techniques and senses during the long-term experiences so as to fit the peripheral field environment. Information Communication Technology (ICT) is currently applied in several fields of agriculture to improve the agricultural productivity and cultivation skills. There are many kinds of ICT-agriculture applications that already used for supporting the agricultural production such as environmental monitoring, precision agriculture including spatial data collection, precision irrigation and supplying data to farmers, facility automation including greenhouse control and animal-feeding facility (Wang, 2006).
    On the other hand, authors have tried to develop the informatization agricultural supporting system called “Agri-eye” to optimize the agricultural production system (Okayasu et al., 2010). This system is composed of field environmental monitoring and acquisition, crop growth diagnosis and quality evaluation, work history recording, data analysis and visualization, and communication tools, and so on. The field environmental monitoring devices above 50 have been installed in the fields above 10 mainly in the Fukuoka and the Oita prefectures. The work recording system has been also distributed over the Internet and can be utilized through the web browsers on personal computers, mobile phones, and smartphones. The validity of the systems has been verified by the feasibility studies up to present.
    In this article, several application examples of the informatization agriculture in Japan will be introduced here.

  • 植物フェノタイピングにおける仮想現実技術の利用

    岡安崇史,Pham Thanh Dong,満窪久也

    農業情報学会2024年次大会  2023.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Toyohashi  

  • Evaluation of a method to estimate light-intercepting characteristics of a rice hill using a RGB-Depth sensor

    Hirai, T., Nakamura, Y., Sakai, A., Okayasu, T., Inoue, E., Mitsuoka, M.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

  • Farmer position estimation in a tomato plant green house with smart devices

    Hashimoto, Y., Arita, D., Shimda, A., Okayasu, T., Uchiyama, H., Taniguchi, R.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

  • Effective investigation of 3d feature value extraction for plant body surface using rgb-d sensor

    Sakai, A., Okayasu, T., Yoshinaga, T., Nugroho, A. P., Arita, D., Inoue, E., Hirai, Y., Mitsuoka, M.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

  • Automatic leaf motion analysis using optical flow to diagnose plant behavior in response to environmental changes

    Nugroho, A. P., Okayasu, T., Sakai, A., Inoue, E., Hirai, Y., Mitsuoka, M., Sutiarso, L.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

    We have proposed an automatic leaf motion analysis based on Infrared (IR) photography. The proposed system allows continuous, high-resolution time-lapse imaging, independent of the present of visible light, and based on open source platform. The utilization of microcomputer as a capturing unit might increase the simplicity and flexibility. The IR camera positioned above the plant as top view projection to capture the foliage images. As the motion tracking, the Optical Flow method was adopted, implementing the Lucas-Kanade technique with Shi-Tomasi corner detection. Optical flow is one of the motion detection methods to analyze the motion between two consecutive images by differentiating the constraint. Displacement distance and direction angle were used as a parameter for evaluation with regards to circadian rhythm. As the result, the proposed automatic leaf motion analysis could perform a continuous IR time-lapse photography and analyze the lateral 2D motion using the Optical Flow method. The highest probability of displacement distance observed at 6px (48%) and the direction angle was at 180° (39.2%). According to the visual appearance of time series data, the motion displacement seems to have a regular pattern resembles the circadian rhythm with regards to environmental changes although the noise also appears. To verify the relation between displacement distance, motion angle and circadian rhythm, analysis of phase and amplitude of data using a Fast Fourier Transform Nonlinear Least Squares (FFT-NLS) method will be in our future works.

  • Plant growth evaluation for leaf vegetables using simple field monitoring system

    Okayasu, T., Tanaka, D., Sakai, A., Sakai, Y., Shimada, K., Awai, K., Inoue, E., Hirai, Y., Mitsuoka, M.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

  • UX的手法を用いた消費者向け農業情報提供インタフェースの有効性評価

    石丸俊介,岡安崇史,吉永 崇,有田大作,井上英二,平井康丸,光岡宗司

    2016年度農業情報学会年次大会  2016.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • オクトコプタを用いた作物生育情報の計測に関する研究

    入江田大輝,岡安崇史,境 淳成,森本 透,冨吉袈裟右衛門,井上英二,平井康丸,光岡宗司

    2016年度農業情報学会年次大会  2016.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • 日本型中小規模多棟分散園芸施設へのUECSプラットホームの活用

    星 岳彦,安場健一郎,黒崎秀仁,岡安崇史

    2016年度農業情報学会年次大会  2016.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • タイヤ表面への土の付着特性の計測と評価

    岡安崇史, 佐久間孝人, 阪上最一, 神村 真, 尾辻秀希, 井上英二, 平井康丸, 光岡宗司

    第75回農業食料工学会年次大会  2016.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都  

  • 植物栽培空間の時空間情報計測に関する基礎的研究

    境 淳成,岡安崇史,松本千里,吉永 崇,有田大作,谷口倫一郎,井上 英二,平井康丸,光岡宗司

    第75回農業食料工学会年次大会  2016.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都  

  • 省電力無線方式圃場環境モニタリングシステムの実証実験と課題抽出

    岡安崇史,尾崎彰則,堀本正文,AMIN Nayeen Al,緒方和夫,AHMED Ashir,宮島郁夫,伊東正一,井上英二,平井康丸,光岡宗司

    第70回農業食料工学会九州支部例会  2016.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡  

  • Smart Agriculture Framework and Its Implementation to Open-Field Tropical Horticulture Production

    Andri Prima Nugroho, Takashi Okayasu, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka, Lilik Sutiarso

    第70回農業食料工学会九州支部例会  2016.9 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:福岡  

  • Measurement and Visualization of Agricultural Information by Using ICT International conference

    Takashi OKAYASU

    Forum “Math-for-Industry” 2016 –Agriculture as a metaphor for creativity in all human endeavor- in QUT, Brisbane, Australia.  2016.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brisbane   Country:Australia  

  • RGB―D画像を用いた植物生育特徴量の計測とその精度評価

    境 淳成,岡安 崇史,吉永 崇,有田 大作,谷口 倫一郎,井上 英二,平井 康丸,光岡 宗司

    2017年度農業情報学会年次大会  2017.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • IT: an enabling technology for small- and medium-scale farmers in Japan Invited International conference

    Takashi OKAYASU

    Conference on Smart Agriculture for Sustainable, Inclusive Productivity  2017.9 

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    Venue:東京  

  • 下負荷面モデルによる粒状体の繰返し負荷挙動予測の高精度化

    岡安崇史, 片山優海, 井上英二, 平井康丸, 光岡宗司

    第76回農業食料工学会年次大会  2017.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • 圃場環境・植物生体計測のための小型移動ロボットの開発

    岡安崇史,高場雄太郎,谷口倫一郎,井上英二,平井康丸,光岡宗司,有田大作,吉永 崇

    第76回農業食料工学会年次大会  2017.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • UECS方式簡易グロースチャンバを用いた植物体の生育特徴量計測

    最上雄介,岡安崇史,黒崎秀仁,星岳彦,安場健一郎,井上英二,平井康丸,光岡宗司

    第71回農業食料工学会九州支部例会  2017.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:佐賀  

  • 農業情報の可視化・共有のための仮想現実技術の応用

    高場雄太郎,岡安崇史,吉永 崇,有田大作,谷口倫一郎,安武大輔,北野雅治,井上英二,平井康丸,光岡宗司

    第71回農業食料工学会九州支部例会  2017.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:佐賀  

  • FAB×農業はおもしろい!中小規模施設園芸を変える次の戦略 Invited

    岡安崇史

    第71回農業食料工学会九州支部例会  2017.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:佐賀  

  • ICT Application in Agriculture with Affordable Sensors and Devices Invited International conference

    Takashi Okayasu

    2nd International Conference on Tropical Agriculture  2017.10 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Yogyakarta   Country:Indonesia  

  • Identification and Evaluation of Bacterial Leaf Blight on Rice Field Using Hyperspectral Imaging International conference

    Muhammad Naufal Rauf Ibrahim, Takashi Okayasu, Atsushi Yoshimura, Yoshiyuki Yamagata, Naruto Furuya, Eiji Inoue, Yasumasu Hirai, Muneshi Mitsuoka

    International Symposium on Agricultural, Food, Environmental and Life Sciences in Asia, 2017 (AFELiSA 2017)  2017.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Affordable Field Environmental Monitoring and Plant Growth Measurement System for Smart Agriculture International conference

    Takashi Okayasu, Andri Prima Nugroho, Atsushige Sakai, Disaku Arita, Takashi Yoshinaga, Rin-ichiro Taniguchi, Masafumi Horimoto, Eiji Inoue, Yasumaru Hirai, and Muneshi Mitsuoka

    International Symposium on Agricultural, Food, Environmental and Life Sciences in Asia, 2017 (AFELiSA 2017)  2017.12 

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    Venue:Sydney   Country:Australia  

  • Sensing Technologies for Advanced Smart Agricultural Systems International conference

    Hideaki Uchiyama, Shunsuke Sakurai, Toshiki Hashimoto and Atsutoshi Hanasaki, Daisaku Arita, Takashi Okayasu, Atsushi Shimada and Rin-ichiro Taniguchi

    International Symposium on Agricultural, Food, Environmental and Life Sciences in Asia, 2017 (AFELiSA 2017)  2017.12 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sydney   Country:Australia  

  • 近未来の日本農業に必要なセンシング技術を考える Invited

    岡安崇史

    第7回超異分野学会  2018.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • 中小規模農家のためのスマート農業を創造する

    岡安崇史

    第7回超異分野学会  2018.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • スマート農業の現状とこれから Invited

    岡安崇史

    第2回農工連携シンポジウム  2018.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡  

  • Arduino低コストUECSによる自律分散型複合環境制御システムのイチゴ高設養液栽培ハウス導入試験

    星 岳彦,瀧川義浩,坂本 勝,戸板裕康,小林一晴,安場健一郎,吉田裕一,後藤丹十郎,黒崎秀仁,岡安崇史

    2018年度農業情報学会年次大会  2018.5 

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    Venue:東京  

  • イチゴ高設栽培における排液情報の計測と活用

    竹中智哉,山田晴夫,上曽山 大,岡安崇史

    2018年度農業情報学会年次大会  2018.5 

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    Venue:東京  

  • イチゴ栽培における画像を用いた生育情報測定および収量予測の実証研究

    政井隆之,岡安崇史,安武大輔,北野雅治,西澤駿人,原 康平,田中泰洋

    2018年度農業情報学会年次大会  2018.5 

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    Venue:東京  

  • Investigation of communication networking protocol for UECS using IM920 and its validity

    Nayeen Al Amin, Takashi Okayasu, Masafumi Horimoto, Takehiko Hoshi, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    2018年度農業情報学会年次大会  2018.5 

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    Venue:東京  

  • 植物栽培空間情報モニタリングのためのモノレール式移動計測ロボットの開発

    岡安崇史,有田大作, 高場雄太郎,吉永 崇, 谷口倫⼀郎, 内山英昭, 尾﨑彰則

    2018年度農業情報学会年次大会  2018.5 

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    Venue:東京  

  • Smart irrigation management system to enhance agriculture in Bangladesh using UECS and LPWAN

    AminNayeen Al, OkayasuTakashi, InoueEiji , (Kyushu University), HiraiYasumaru (Kyushu University), MitsuokaMuneshi (Kyushu University), HoshiTakehiko (Kindai University), HorimotoMasafumi () Holly & Co. Ltd)

    第72回農業食料工学会九州支部例会  2018.8 

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    Venue:Kumamoto  

  • Development of a web-based data sharing and management platform to improve accuracy and reliability of elastoplastic constitutive model International conference

    Takashi Okayasu, Masami Katayama, Takahisa Nakamura, Ippei Kijiya and Tatsuya Ishikawa

    Fourth International Conference on Railway Technology: Research, Development and Maintenance  2018.9 

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    Venue:Barcelona  

  • 粒状体力学モデルの精度向上のための情報共有プラットフォームの開発

    岡安崇史,片山優海,井上英二 ,平井康丸,光岡宗司

    農業環境工学関連学会2018年合同大会  2018.9 

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    Venue:Ehime  

  • Development of plant phenotyping platform using affordable devices and sensors International conference

    T. Okayasu, D. Arita, T. Yoshinaga, A. Shimada, R. Taniguchi, E. Inoue, Y. Hirai, and M. Mitsuoka

    AFITA/WCCA2018  2018.10 

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    Venue:Mumbai   Country:Japan  

  • RGB-D センサを用いた植物生育特徴量の計測とその精度評価

    長浜義典,野田龍一,野村浩一,安武大輔,岩尾忠重,北野雅治,井上英二,岡安崇史

    2019年度農業情報学会年次大会  2019.5 

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    Venue:Tokyo  

  • 深層学習で得られたイチゴ生育特徴量の利用に関する研究

    内山美咲・岡安崇史・政井隆之・田中泰洋・前田衡・安武大輔・井上英二・平井康丸・光岡宗司

    2019年度農業情報学会年次大会  2019.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • Plant Weight Measurement Using Low Cost Load Cell and Its Accuracy Evaluation

    Astriati Hamidah, Takashi Okayasu, Yu Hoshino, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka, Andri Prima Nugroho and Lilik Sutiarso

    2019年度農業情報学会年次大会  2019.5 

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    Venue:Tokyo  

  • Development of Irrigation Management System Based on LPWAN-UECS for Distributed Open Fields

    Nayeen Al Amin, Takashi Okayasu, Masafumi Horimoto, Hideto Kurosaki Takehiko Hoshi, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    2019年度農業情報学会年次大会  2019.5 

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    Venue:Tokyo  

  • RGB-D センサを用いた植物生育特徴量の計測とその精度評価

    長浜義典,野田龍一,野村浩一,安武大輔,岩尾忠重,北野雅治,井上英二,岡安崇史

    2019年度農業情報学会年次大会  2019.5 

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    Venue:Tokyo  

  • 深層学習で得られたイチゴ生育特徴量の利用に関する研究

    内山美咲・岡安崇史・政井隆之・田中泰洋・前田衡・安武大輔・井上英二・平井康丸・光岡宗司

    2019年度農業情報学会年次大会  2019.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • Plant Weight Measurement Using Low Cost Load Cell and Its Accuracy Evaluation

    Astriati Hamidah, Takashi Okayasu, Yu Hoshino, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka, Andri Prima Nugroho and Lilik Sutiarso

    2019年度農業情報学会年次大会  2019.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • Development of Irrigation Management System Based on LPWAN-UECS for Distributed Open Fields

    Nayeen Al Amin, Takashi Okayasu, Masafumi Horimoto, Hideto Kurosaki Takehiko Hoshi, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    2019年度農業情報学会年次大会  2019.5 

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    Venue:Tokyo  

  • 画像情報を用いて植物の特徴を探す Invited

    岡安崇史

    第207回SAM会  2021.4 

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    Venue:Online  

  • Plant phenotyping technologies using low cost devices Invited

    Okayasu, T.

    The 14th TSAE International Conference & 22nd TSAE National Conference (Webinar)  2021.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online  

  • Development of plant phenotyping system using affordable IoT devices Invited International conference

    Okayasu, T., Ito, J., Nomura, K., Yasutake, D., Ozaki, Y., Iwao, T., Inoue, E., Hirai, Y.

    5th edition of the International Conference of the International Commission of Agricultural Engineering  2021.5 

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    Venue:Online  

  • Accuracy Evaluation of Self-position Estimation and Mapping Method for Farm Supporting Robot in Greenhouse

    Sadam A, A.M., Okayasu, T., Inoue, E., Hirai, Y.

    農業情報学会2021年度 年次大会  2021.5 

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    Venue:Online  

  • RGB-Dカメラと複数波長LEDを用いた植物形状・分光画像計測技術の開発

    岡安崇史,高橋秀平,伊藤次郎,長浜義典,井上英二,平井廉丸,光岡宗司

    農業情報学会2021年度 年次大会  2021.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online  

  • 深層学習によるパノラマ画像からの植物生育情報の抽出

    小野渓太, 岡安崇史, 井上英二 , 平井康丸, 光岡宗司

    農業情報学会2021年度 年次大会  2021.5 

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    Venue:Online  

  • DX で変わる・変える地域農業 Invited

    岡安崇史

    ICT 活用技術マンスリー講演会・地盤工学会関西支部  2021.6 

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    Venue:Online  

  • 廉価なイメージセンサーを用いた植物の生育特徴量の計測と可視化について Invited

    岡安崇史

    施設園芸・環境制御技術セミナー  2021.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Online  

  • 情報を生かす農業の実現に向けて Invited

    岡安崇史

    KOINEオンラインセミナー 「地域エネルギー・情報を基盤としたスマートシティ構想」  2021.9 

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    Venue:Online  

  • Plant phenotyping technology to enhance smart farming Invited International conference

    Okayasu, T.

    2021 IPB-FFTC Workshop on "Adaptation and Adoption of Agricultural Sensors, Information Communication Technologies, and Smart Supply Chains to Support Smallholder Farmers"  2021.9 

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    Venue:Online  

  • スマート農業で活かす・活かせる植物フェノタイピング技術について

    岡安崇史,岡山 毅,川越義則,梅田大樹,平良英三

    第79回農業食料工学会年次大会  2021.9 

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    Venue:Online  

  • 植物形質の時空間計測におけるRGB-D特徴量を用いた生育評価

    伊藤次郎, 岡安崇史, 安武大輔, 井上英二, 平井康丸

    第79回農業食料工学会年次大会  2021.9 

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    Venue:Online  

  • 深層学習による全天球画像からの植物生育情報の抽出とその精度評価

    小野渓太, 岡安崇史, 井上英二, 平井康丸

    第79回農業食料工学会年次大会  2021.9 

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    Venue:Online  

  • 施設園芸を中心としたスマート農業の現状について Invited

    岡安崇史

    電気学会 農業センシング委員会  2021.10 

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    Venue:Online  

  • 低コストデバイスを用いた植物生育特徴量の計測とその利用 Invited

    岡安崇史

    令和3年度野菜総合研修会  2021.10 

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    Venue:Online  

  • 農業における IT(Information Technology)の活用 Invited International conference

    岡安崇史

    ベトナム・九州農学フォーラム  2021.11 

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    Venue:Online  

  • 非GNSS環境における小型ドローンの 自律飛行制御システムの開発

    田中 颯,岡安崇史,Sutan M. S. Awal,伊藤次郎,井上英二,平井康丸,光岡宗司

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • 栽植密度差をつけたホウレンソウを対象としたRGB-D特徴量による体積推定および生育評価

    伊藤次郎, 岡安崇史, 安武大輔, 井上英二, 平井康丸

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • Accuracy evaluation of data augmentation to improve fruit fly detection

    Dong, P.T., Okayasu, T., Inoue, E., Hirai, Y., Vo., H.B.

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • Accuracy Evaluation of Navigation Stack for Small Tank Robot based on ROS

    Awal, S.M.S., Okayasu, T., Inoue, E., Hirai, Y.

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • 農業IoT 普及のための教材開発と問題点の抽出

    堀本正文・岡安崇史・八島亜美・釜瀬朋子・河野知和

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • 深度画像情報を用いた植物3Dモデルの再構築

    兒玉拓也,岡安崇史,井上英二,平井康丸

    第75回九州農業食料工学会例会  2021.12 

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    Venue:Online  

  • Plant Phenotyping Technology to Enhance Next Smart Agriculture Invited International conference

    Okayasu, T.

    AgriApp 2022 Workshop  2022.3 

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    Venue:Online   Country:Japan  

  • Data augmentation combining with active learning for fruit fly detection and verification of its validity

    Dong, P. T., Okayasu, T., Inoue , E., Hirai, Y., Vo, H. B.

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • Autonomous Mobile Robot Design Based on ROS

    Sadam, S. M., Okayasu, T., Inoue, E., Hirai, Y.

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • Development of Farming Support Robot Based on ROS

    Sadam, S. M., Okayasu, T., Inoue, E., Hirai, Y.

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • 植物の水分吸収・ストレス動態に着目した灌水制御ロジックの開発とその評価

    上野文太,岡安崇史,堀本正文,井上英二,平井康丸

    農業情報学会2022年度年次大会  2022.5 

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    Language:Japanese  

    Venue:Online  

  • 植物フェノタイピングプラットフォームによる生育情報の時空間計測・評価技術の構築

    伊藤次郎,岡安崇史,安武大輔,野村浩一,井上英二,平井康丸

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • スマート農業講習会用環境計測ノード製作キットの開発

    堀本正文 ,岡崇史安,平井康丸,八島亜美,釜瀬朋子,河野知和

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • 3次元点群情報からの植物骨格形状の抽出

    兒玉拓也,岡安崇史 ,安武大輔,畔栁武司 ,井上英二,平井康丸

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • 3Dプリンタパーツを援用した植物フェノタイピング装置の開発

    津倉舜司,岡安崇史,丸山明子,井上英二,平井康丸

    農業情報学会2022年度年次大会  2022.5 

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    Language:Japanese  

    Venue:Online  

  • 低コストフェノタイピング装置を用いた植物形質の計測と抽出

    津倉舜司,岡安崇史,丸山明子,井上英二,平井康丸

    農業情報学会2022年度年次大会  2022.5 

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    Venue:Online  

  • Affordable plant phenotyping tools for digital agriculture Invited International conference

    Okayasu, T.

    International Webinar on Smart Systems for a Sustainable Agriculture and Food Security  2022.6 

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    Venue:Online   Country:Japan  

  • Change and evaluation of growth feature values using time-series images for leafy plant community

    Okayasu, T., Ito, J., Nomura, K., Yasutake, D., Ozaki, Y., Iwao, T., Hirai, Y.

    The XX CIGR World Congress 2022  2022.12 

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    Venue:Kyoto  

  • 農業におけるAIの利用事例の紹介 Invited

    岡安崇史

    AIを身近で活用するスマート農業セミナー  2022.7 

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    Venue:Online  

  • 農業におけるICT,AI,ロボット技術の利用 Invited

    岡安崇史

    農業教育研究部会研修会  2022.8 

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    Presentation type:Oral presentation (general)  

    Venue:福岡市  

  • 九州大学における農学DXの実践と生物環境工学への貢献 Invited

    岡安崇史

    日本生物環境工学会2022年福岡大会  2022.9 

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    Venue:福岡市  

  • DXを活用した農学におけるデータサイエンス・工学教育の強化 Invited

    岡安崇史

    第75回九州農業食料工学会例会  2022.10 

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    Presentation type:Oral presentation (general)  

    Venue:Online  

  • Smart farming technologies for small and mid scale horticulture Invited International conference

    Okayasu, T.

    KoRAA training program  2022.10 

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    Venue:Online  

  • Plant growth sensing for data-driven agriculture Invited International conference

    Okayasu, T.

    The 10th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB 2022)  2022.11 

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    Presentation type:Oral presentation (general)  

    Venue:Kaohsiung  

  • Plant Phenotyping for The Next Smart Agriculture Invited International conference

    Okayasu, T.

    Implementasi Program Kompetisi Kampus Merdeka  2022.12 

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    Venue:Online  

  • 深層学習と仮想現実技術を用いた植物生育情報の抽出と可視化

    小野渓太,岡安崇史 ,安武大輔 ,平井康丸

    農業情報学会2023年度年次大会  2023.5 

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    Venue:福岡市  

  • 農業情報を記録・共有するためのWeb アプリ開発とその有効性の評価

    満窪久也,岡安崇史,安武大輔,平井康丸,尾崎剛教,古賀正治

    農業情報学会2023年度年次大会  2023.5 

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    Venue:福岡市  

  • UECSによる複合制御実現のためのアルゴリズム的実験と実装

    堀本正文,岡安崇史,安武大輔,平井康丸,尾崎剛教,古賀正治

    農業情報学会2023年度年次大会  2023.5 

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    Venue:福岡市  

  • 重量センサによる植物の水利用特性の可視化と灌水制御への応用

    草水穏敬,岡安崇史,堀本正⽂,安武大輔 ,平井康丸 ,尾崎剛教,古賀正治

    農業情報学会2023年度年次大会  2023.5 

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    Venue:福岡市  

  • ニラの点群情報を用いた3次元形状モデルの生成

    兒玉拓也,岡安崇史,安武大輔,平井康丸,畔栁武司

    農業情報学会2023年度年次大会  2023.5 

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    Venue:福岡市  

  • A Trial of DX-oriented Research and Education in Kyushu University Invited

    Okayasu, T.

    International Joint Workshop on DX Research and Education to Realize Sustainable Food Production  2023.3 

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    Venue:福岡市  

  • 農業DX人材育成のための数理・データサイエンス・工学教育の強化 Invited

    岡安崇史

    農業情報学会2023年次大会シンポジウム   2023.5 

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    Venue:福岡市  

  • 多機能収穫台車を用いた多元農業情報センシングの試み

    新開飛雅・岡安崇史・堀本正文・有田大作・平井康丸・安武大輔

    第76回九州農業食料工学会例会  2023.9 

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    Venue:Okinawa  

  • 3次元個別要素法によるロータリ耕うん時動力の予測

    平山祐多・岡安崇史・加藤豊大・平井康丸・中谷公紀・海田健児・秀川睦実

    第76回九州農業食料工学会例会  2023.9 

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    Venue:Okinawa  

  • 農業DXを加速させる数理・データサイエンス教育の一提案

    岡安崇史・尾﨑彰則・Muhammad Rashed Al Mamun・平井康丸

    第76回九州農業食料工学会例会  2023.9 

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    Venue:Okinawa  

  • 最適な受粉機構設計のための噴射ノズルの性能評価

    蒋 再飛・岡安崇史・Muhammad Rashed Al Mamun・平井康丸・安武大輔

    第76回九州農業食料工学会例会  2023.9 

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    Venue:Okinawa  

  • ハイパースペクトルイメージングによる植物葉の分光・蛍光特性の評価

    宮田亮介・岡安崇史・安武大輔・平井康丸・福島崇志

    第76回九州農業食料工学会例会  2023.9 

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    Venue:Okinawa  

  • Comparison of High Accuracy and Throughput 3D Reconstruction Techniques to Collect Plant Canopy Information

    Pham, D.T., Okayasu, T., Yasutake, D., Hirai, Y., Mamun, M.R.A., Ozaki, T., Koga, M., Hidaka, K., Nomura, K., Vo, H.B.

    農業情報学会2024年次大会  2024.5 

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    Venue:Takasaki  

  • Neural Radiance Fieldsを用いたニラ植物の3Dメッシュ生成とその精度評価

    Pham, D.T., Okayasu, T., Yasutake, D., Hirai, Y., Mamun, M.R.A., Ozaki, T., Koga, M., Hidaka, K., Nomura, K., Vo, H.B.

    農業情報学会2024年次大会  2024.5 

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    Venue:Takasaki  

  • ノーコーディングを目指したUECS環境計測・制御ノードの設計・開発

    堀本正文,岡安崇史,Amin Nayeen Al,安武大輔,平井康丸,尾崎剛教,古賀正治

    農業情報学会2024年次大会  2024.5 

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    Venue:Takasaki  

  • データ駆動型農業のためのUECS対応植物フェノタイピングノードの提案

    岡安崇史,Dong Thanh Pham,安武大輔,Muhammad Rashed Al Mamun, 平井康丸,尾崎剛教,古賀正治

    農業情報学会2024年次大会  2024.5 

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    Venue:Takasaki  

  • Plant Phenotyping Technology Leading to Data-driven Agriculture Invited

    Takashi OKAYASU

    Fifth International Workshop on Machine Learning for Cyber-Agricultural Systems (MLCAS2023)  2023.7 

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    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Sarabetsu  

  • Development of An Artificial Intelligent-based Plant Phenotyping Platform to Enhance Smart Agriculture and Verification of Its Validity

    Pham Thanh Dong, Takashi Okayasu, Daisuke Yasutake, Yasumaru Hirai, Takenori Ozaki, Masaharu Koga, Kota Hidaka, Masaharu Kitano

    Fifth International Workshop on Machine Learning for Cyber-Agricultural Systems (MLCAS2023)  2023.7 

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    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:Sarabetsu  

  • Trials on ICT application for typical small and medium scale farmers in Japan agriculture International conference

    Okayasu, T.

    AWSSS2016  2016.3 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Beijing  

  • せん断方向の違いによる塑性変形の方向依存性を表現可能な構成式−中空ねじりせん断試験結果との比較−

    橋口公一,杉本昌也,竹添亮,堤成一郎,岡安崇史,斉藤公志郎

    第56回農業機械学会九州支部例会  2001.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • PIVに基づく土の変位オンライン計測システムの開発とその妥当性の検討

    岡安崇史,橋口公一,武田 敏,尾崎伸吾,武部和之,上野正実,深見公一郎

    第56回農業機械学会九州支部例会  2001.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • 走行車輪下の地盤変形に関する弾塑性有限要素解析

    岡安崇史,橋口公一,堤成一郎,メヒディコジャステポール,尾崎伸吾,上野正実

    第56回農業機械学会九州支部例会  2001.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • 走行車輪下近傍の地盤の変形特性に関する研究

    岡安崇史,橋口公一,尾崎伸吾,武田 敏,白 勇,上野正実,深見公一郎

    第56回農業機械学会九州支部例会  2001.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • 砂地盤における剛性車輪下の土粒子変位予測モデル

    上野正実,深見公一郎,橋口公一,岡安崇史

    第56回農業機械学会九州支部例会  2001.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • 時間依存性・下負荷面モデルの土への適用性の検討

    橋口公一,岡安崇史,尾崎利行

    第37回地盤工学研究発表会  2002.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Osaka  

  • 走行車輪下近傍の土の変位計測へのPIVの適用

    岡安崇史,橋口公一,尾崎伸吾,武田敏,上野正実

    第37回地盤工学研究発表会  2002.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Osaka  

  • 静的下負荷面導入による時間依存性・下負荷面モデルの拡張

    岡安崇史,橋口公一,尾崎利行

    第37回地盤工学研究発表会  2002.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Osaka  

  • 下負荷面モデルの概念の導入によるクーロン摩擦則の拡張

    尾崎伸吾,岡安崇史,橋口公一,コジャステポール・メヘディ

    第37回地盤工学研究発表会  2002.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Osaka  

  • 下負荷面の概念を導入した一般化摩擦モデル

    橋口公一,岡安崇史,尾崎伸吾,コジャステポール・メヘディ,在郷 毅

    第57回農業機械学会九州支部例会  2002.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Isahaya  

  • 時間依存性非弾性構成式による金属の力学特性に関する予測

    橋口公一,岡安崇史,齊藤公志郎,梅田大樹,大西 陽

    第57回農業機械学会九州支部例会  2002.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Isahaya  

  • 一般化摩擦モデルを導入した有限要素解析プログラムの開発

    岡安崇史,橋口公一,尾崎伸吾,在郷 毅,コジャステポール・メヘディ,上野正実

    第57回農業機械学会九州支部例会  2002.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Isahaya  

  • 走行車輪下近傍の土の変位計測と地盤の変形挙動解析

    岡安崇史,橋口公一,尾崎伸吾,コジャステポール・メヘディ,武田 敏,武部和之,上野正実,深見公一郎

    第57回農業機械学会九州支部例会  2002.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Isahaya  

  • PIVを利用した車輪下の初期沈下状態における土の変形特性とモデル化

    上野正実,深見公一郎,橋口公一,岡安崇史

    第57回農業機械学会九州支部例会  2002.8 

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    Venue:Isahaya  

  • 剛性車輪下の土の変位増分モデルへのガウス関数の適応性

    深見公一郎,上野正実,橋口公一,岡安崇史

    第57回農業機械学会九州支部例会  2002.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Isahaya  

  • 下負荷面の概念に基づく一般化摩擦モデルとその予測特性の評価

    橋口公一,岡安崇史,尾崎伸吾,メヒディ・コジャステポール,在郷毅,上野正実,深見公一郎

    第61回農業機械学会年次大会  2002.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Morioka  

  • Elastoplastic Finite Element Analysis of Soil Beneath a Rigid Wheel

    HASHIGUCHI, K. KHOJASTEHPOUR, M., OKAYASU, T. and OZAKI S.:

    第61回農業機械学会年次大会  2002.9 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Morioka  

  • PIVに基づく走行車輪下近傍の地盤変形挙動解析

    岡安崇史,橋口公一,メヒディ・コジャステポール,武田敏,尾崎伸吾,武部和之,上野正実,深見公一郎

    第61回農業機械学会年次大会  2002.9 

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    Venue:Morioka  

  • Symmetric Bifurcation Analysis by the Subloading Surface Model with Tangential Stretching

    HASHIGUCHI, K., KHOJASTEHPOUR, M., OKAYASU, T. and OZAKI, S.

    第62回農業機械学会年次大会  2003.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Saitama  

  • 下摩擦面モデルによる接触問題の有限要素解析

    橋口公一,岡安崇史,尾崎伸吾,KHOJASTEHPOUR, M.,堀田直岐,上野正実

    第62回農業機械学会年次大会  2003.4 

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    Venue:Saitama  

  • 速度依存性−拡張下負荷面モデルによる金属材料の繰返し負荷挙動の予測

    橋口公一,岡安崇史,大西 陽,齊藤公志郎,梅田大樹,西出寿也

    第62回農業機械学会年次大会  2003.4 

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    Venue:Saitama  

  • 土の構造変化表現のための拡張上負荷面モデルの提案および適用性の検討

    岡安崇史,橋口公一,中山 祥,尾崎利行

    第62回農業機械学会年次大会  2003.4 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saitama  

  • サイロ内粒子の流動特性に関する弾塑性有限要素解析

    岡安崇史,橋口公一,VARDOULAKIS, I.,尾崎利行,矢嶋泰基

    第62回農業機械学会年次大会  2003.4 

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    Venue:Saitama  

  • 下負荷面モデルを導入した弾塑性有限要素法によるTrap-Door問題の解析

    岡安崇史,橋口公一,VARDOULAKIS, I.,尾崎利行,竹添 亮

    第62回農業機械学会年次大会  2003.4 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saitama  

  • 車輪走行性の高精度予測に関する研究—第4報 接地応力予測モデルの作成—

    上野正実,深見公一郎,橋口公一,岡安崇史,尾崎伸吾

    第62回農業機械学会年次大会  2003.4 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saitama  

  • すべり下負荷面モデルによる接触・摩擦問題の有限要素解析

    橋口公一,岡安崇史,尾崎伸吾,堀田直岐,上野正実

    第38回地盤工学研究発表会  2003.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Akita  

  • アンカー引揚試験の弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,竹添亮

    第38回地盤工学研究発表会  2003.7 

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    Venue:Akita  

  • PIVによる地盤変形挙動の計測と地盤内応力予測に関する研究

    岡安崇史,橋口公一,尾崎伸吾,武田敏,武部和之,上野正実,深見公一郎

    第38回地盤工学研究発表会  2003.7 

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    Venue:Akita  

  • 拡張下負荷面モデルを適用したシラスの非排水繰返しせん断挙動の予測

    平瑞樹,橋口公一,岡安崇史

    第38回地盤工学研究発表会  2003.7 

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    Venue:Akita  

  • アンカー引抜時の地盤の変形挙動に関する弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,竹添亮

    第6回応用力学シンポジウム(土木学会)  2003.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokushima  

  • 回転攪拌機による地盤改良土の品質特性と品質評価方法に関する考察

    古賀浩史,赤坂宗昭,杉谷和彦,藤井道博,橋口公一,岡安崇史

    土木学会平成15年度全国大会  2003.9 

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    Venue:Tokushima  

  • 下負荷面摩擦モデルによる接触・摩擦現象の有限要素解析(第二報)−接触応力および相対変位特性について−

    橋口公一,尾崎伸吾,岡安崇史,在郷毅,上野正実

    第58回農業機械学会九州支部例会  2003.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Miyazaki  

  • サイロ内紛粒体層の流動現象に関する弾塑性有限要素解析(第一報)

    岡安崇史・橋口公一・尾崎利行・矢嶋泰基・尾崎伸吾

    第58回農業機械学会九州支部例会  2003.9 

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    Venue:Miyazaki  

  • 下負荷面の概念を導入した現象論的摩擦モデルの提案

    橋口公一,尾崎伸吾,岡安崇史,在郷 毅

    第24回テラメカニックス研究会  2003.11 

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    Venue:Fukuoka  

  • 下負荷面摩擦モデルを用いた土−機械間の相互作用の有限要素解析

    橋口公一,尾崎伸吾,岡安崇史,堀田直岐

    第24回テラメカニックス研究会  2003.11 

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    Venue:Fukuoka  

  • Trap-Door問題に関する弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,矢嶋泰基

    第24回テラメカニックス研究会  2003.11 

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    Venue:Fukuoka  

  • 盛土基礎地盤の側方流動解析に関する一考察

    橋口公一,岡安崇史,吉丸哲司,近平卓哉,阪上最一

    第39回地盤工学研究発表会  2004.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Niigata  

  • 繰返し荷重を受けるアンカーの支持力に関する弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,尾崎伸吾,矢嶋泰基

    第39回地盤工学研究発表会  2004.7 

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    Venue:Niigata  

  • 上負荷面概念を導入した拡張下負荷面モデルによる密度の異なる砂の繰返し負荷挙動予測

    岡安崇史,橋口公一,中山 祥,吉丸哲司

    第39回地盤工学研究発表会  2004.7 

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    Venue:Niigata  

  • 下負荷面摩擦モデル用いた地盤−杭間の相互作用の有限要素解析

    尾崎伸吾,岡安崇史,橋口公一,在郷毅

    第39回地盤工学研究発表会  2004.7 

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    Venue:Niigata  

  • 下負荷面モデルに基づく弾塑性有限要素法による落し戸問題の解

    尾崎利行,橋口公一,岡安崇史

    第39回地盤工学研究発表会  2004.7 

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    Venue:Niigata  

  • ダブルミキシング工法による軟弱地盤の改良とその有効性の評価

    古賀浩史,赤坂宗昭,杉谷和彦,藤井道博,橋口公一,岡安崇史

    第39回地盤工学研究発表会  2004.7 

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    Venue:Niigata  

  • 2つの非古典弾塑性モデルを用いた車輪走行・転圧現象の有限要素解析

    橋口公一,尾崎伸吾,岡安崇史,堀田直岐

    第63回農業機械学会年次大会  2004.9 

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    Venue:Kobe  

  • PIVによる走行車輪下の地盤変形挙動の精密計測に関する研究 —PIVアルゴリズムの改良とその妥当性の検討—

    岡安崇史,橋口公一,尾崎伸吾,川口史郎,矢嶋泰基,木下和典,上野正実,深見公一郎

    第63回農業機械学会年次大会  2004.9 

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    Venue:Kobe  

  • 繰返し荷重作用時のアンカー支持力に関する弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,矢嶋泰基,尾崎伸吾

    第63回農業機械学会年次大会  2004.9 

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    Venue:Kobe  

  • サイロ内粉粒体層の流動現象に関する基礎的研究 —実験値との比較および影響因子(摩擦角)についての考察—

    岡安崇史,橋口公一,矢嶋泰基,尾崎伸吾,木下和典

    第63回農業機械学会年次大会  2004.9 

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    Venue:Kobe  

  • 繰返し荷重を受けるアンカー周辺地盤の変形挙動に関する弾塑性有限要素解析

    岡安崇史,橋口公一,尾崎利行,矢嶋泰基,尾崎伸吾,木下和典

    第7回応用力学シンポジウム(土木学会)  2004.9 

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    Venue:Nagoya  

  • 下負荷面モデルを導入した有限要素法による降下床実験のシミュレーション

    尾崎利行,岡安崇史,橋口公一,矢嶋泰基

    第7回応用力学シンポジウム(土木学会)  2004.9 

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    Venue:Nagoya  

  • 盛土施工に伴う過圧密地盤に関する基礎的研究

    吉丸哲司,橋口公一,岡安崇史,阪上最一

    第7回応用力学シンポジウム(土木学会)  2004.9 

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    Venue:Nagoya  

  • 下負荷面摩擦モデルを用いた地盤−杭間の相互作用の弾塑性有限要素解析

    尾崎伸吾,橋口公一,岡安崇史

    第7回応用力学シンポジウム(土木学会)  2004.9 

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    Venue:Nagoya  

  • サイロ内粉粒体層の流動現象に関する研究

    岡安崇史,橋口公一,矢嶋泰基,木下和典,田代克己,尾崎伸吾

    農業環境工学関連学会2004年合同大会  2004.9 

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    Venue:Fukuoka  

  • 土の変形および粉粒体層の流動現象の高精度計測法に関する研究

    岡安崇史,橋口公一,尾崎伸吾,武部和之,川口史郎,田代克己

    農業環境工学関連学会2004年合同大会  2004.9 

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    Venue:Fukuoka  

  • Tangential Stress-rate Effect in Soils Subjected to Cyclic Circular Stress Path in the Deviatoric Stress Plane International conference

    Setouchi, H. Hashiguchi, K., Okayashu, T. and Shikanai, T.

    International Conference on Computational & Experimental Engineering and Sciences 2004  2004.9 

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    Venue:Madeira   Country:Portugal  

  • Elastoplastic Finite Element Analysis of the Trapdoor Problem International conference

    Ozaki,T., Okayasu T., Hashiguchi K. and Yajima D.

    International Conference on Computational & Experimental Engineering and Sciences 2004  2004.9 

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    Venue:Madeira   Country:Portugal  

  • Finite Element Simulation on Uplift Problem of Ground Anchor International conference

    Okayasu, T., Hashiguchi, K.., Ozaki, T., Yajima, D. and Ozaki, S.

    International Conference on Computational & Experimental Engineering and Sciences 2004  2004.9 

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    Venue:Madeira   Country:Portugal  

  • Deformation Analysis of Cohesive Soft Ground with Solidified Surface under Fill Construction International conference

    Yoshimaru, T., Hashiguchi, K. Okayasu, T. and Sakajo, S.

    International Conference on Computational & Experimental Engineering and Sciences 2004  2004.9 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Madeira   Country:Portugal  

  • サイロ内粉粒体層の流動現象に関する基礎的研究

    岡安崇史,橋口公一,矢嶋泰基,木下和典,田代克己,尾崎伸吾

    第59回農業機械学九州支部例会  2004.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Okinawa  

  • 農用ハウス基礎の引抜現象に関する一考察

    岡安崇史,橋口公一,長崎裕司,玉城勝彦,金井源太

    第59回農業機械学九州支部例会  2004.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Okinawa  

  • 接線緩和を考慮した下負荷面モデルによる非比例負荷変形挙動の予測

    橋口公一,岡安崇史,籾井秀斗,尾崎伸吾

    第59回農業機械学九州支部例会  2004.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Okinawa  

  • 弾塑性有限要素法による車輪走行・転圧現象の再現

    尾崎伸吾,岡安崇史,橋口公一,川口史郎,上野正実

    第59回農業機械学九州支部例会  2004.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Okinawa  

  • A basic research of the strength to the solidification soil on the soft ground International conference

    Yoshimaru, T., Okayasu T., Hashiguchi, K. and Sakajo, S.

    Plasticity ’05: 11th Int. Symp. Plasticity and its Application  2005.1 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kauwai   Country:United States  

  • Deformation behavior analysis in tunnel excavation by elastoplastic finite element method based on subloading surface model International conference

    Ozaki, T., Okayasu T., Hashiguchi, K. and Yajima, D.

    Plasticity ’05: 11th Int. Symp. Plasticity and its Application  2005.1 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kauwai   Country:United States  

  • Elastoplastic constitutive equation of volcanic sandy soil “SHIRASU” based on the subloading surface model International conference

    Hira, M., Hashiguchi, K. and Okayasu, K.

    Plasticity ’05: 11th Int. Symp. Plasticity and its Application  2005.1 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kauwai   Country:United States  

  • Finite element analysis on uplift problem of ground anchor International conference

    Okayasu T., Hashiguchi, K., Yajima, D., Ozaki, T and Ozaki, S.

    Plasticity ’05: 11th Int. Symp. Plasticity and its Application  2005.1 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kauwai   Country:United States  

  • 盛土の転圧工程に関する一考察

    橋口公一,岡安崇史,吉丸哲司

    第39回地盤工学研究発表会  2005.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hakodate  

  • PIVによる地盤変形計測法とその高精度化に関する研究

    岡安崇史,橋口公一,川口史郎,矢嶋泰基,尾崎伸吾

    第40回地盤工学研究発表会  2005.7 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hakodate  

  • すべり摩擦現象を考慮した圧密試験の土−水連成有限要素解析

    尾崎伸吾,岡安崇史,橋口公一,陳玳

    第8回応用力学シンポジウム(土木学会)  2005.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • 農用ハウス基礎の引抜現象に関する研究

    岡安崇史,橋口公一,木下和典,長﨑裕司,玉城勝彦,金井源太

    農業環境工学関連学会2005年合同大会  2005.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Kanazawa  

  • サイロ内粉粒体層の流動現象に関する基礎的研究—排出口部傾斜付きサイロにおける流動現象および傾斜角度についての考察—

    矢嶋泰基,岡安崇史,橋口公一,安河内 栄

    農業環境工学関連学会2005年合同大会  2005.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Kanazawa  

  • 金属材料における接線方向のクリープを伴う弾・粘塑性モデルの提案

    安河内栄,岡安崇史,矢嶋泰基,井上英二

    第60回農業機械学九州支部例会  2005.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • ホッパ型サイロ内粒子層における流動現象の弾塑性有限要素解析

    木下和典,岡安崇史,高林亮,井上英二

    第60回農業機械学九州支部例会  2005.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Elastoplastic Finite Element Analysis of Footing Problem on Soil Ground by the Subloading Surface Model International conference

    Ozaki, T., Hashiguchi, K., Okayasu, T.

    International Conference on Computational & Experimental Engineering and Sciences 2005  2005.12 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Chennai   Country:India  

  • Proposal of Elasto-Viscoplastic Constitutive Model based on Subloading Surface Concept and Its Application to Metal Material International conference

    Okayasu, T., Takabayashi, R., Hashiguchi, K., Inoue, E..

    International Conference on Computational & Experimental Engineering and Sciences 2005  2005.12 

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    Venue:Chennai   Country:India  

  • 構造を有する土の転圧現象に関する弾塑性有限要素解析

    大山将史, 岡安崇史, 松田浩幹, 尾崎伸吾, 井上英二

    農業環境工学関連学会2006年合同大会  2006.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Sapporo  

  • 計算力学教育のための有限要素解析入門パッケージの構築

    岡安崇史, 井上英二

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • サイロ内粉粒体層の流動現象に関する実験と数値解析

    安河内栄, 岡安崇史, 奥田康隆, 矢島泰基, 井上英二

    農業環境工学関連学会2006年合同大会  2006.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Sapporo  

  • 汎用有限要素解析コードMSC.Marcへの下負荷面モデルの導入とその妥当性評価

    下村武司,岡安崇史,光岡宗司,井上英二

    農業機械学会九州支部  2007.8 

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    Venue:Kagoshima  

  • 営農支援のための圃場気象環境モニタリングの開発とその利用

    岡安崇史,西出寿也,羽田野梨絵,長瀬亮祐,平田真理,中司 敬,山邊信利,光岡宗司,井上英二,

    農業機械学会九州支部  2007.8 

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    Venue:Kagoshima  

  • ハイパースペクトルイメージングシステムの開発とその検証

    西出寿也,岡安崇史,羽田野梨絵,長瀬亮祐,井上英二

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • 浅層耕うんされた土壌の踏圧現象に関する一考察

    松田浩幹,岡安崇史,光岡宗司,井上英二,上野正実,深見公一郎

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • 粒状材料の揺動選別現象に関する個別要素法解析

    江口 寛,岡安崇史,山形友祐,光岡宗司,井上英二,今村英一

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Kagoshima  

  • 構造を有する地盤の転圧現象に関する弾塑性有限要素解析

    岡安崇史,大山将史,古野裕子,光岡宗司,井上英二,橋口公一

    土木学会(応用力学シンポジウム)  2007.9 

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    Venue:Hiroshima  

  • 3次元有限要素法による立木伐倒時の切り口周辺部の応力解析

    岡安崇史・上村 巧・松田浩幹・光岡宗司・井上英二・鹿島潤・岡 勝

    森林利用学会  2007.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tsukuba  

  • Utilization of Hyperspectral Imaging Technique for Low Protein Rice Production in Kasuya, Fukuoka International conference

    Okayasu, T. Hadano, R., Hirata, M., Yamabe, N., Yasutake, H., Nakaji, K., Mitsuoka, M., Inoue, E.

    Int. S. Agr. Struct. Agr. Engng. 2007  2007.12 

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    Venue:Taipei   Country:Taiwan, Province of China  

  • Elastoplastic finite element analysis on soil compaction phenomena by wheel traffics International conference

    Okayasu, T., Matsuda, H., Furuno, Y., Mitsuoka, M., Inoue, E., Hashiguchi, K., Ueno, M., Fukami, K.

    Int. WS Agri. Biosy. Engng.  2007.12 

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    Venue:Ho Chi Minh   Country:Viet Nam  

  • 車輪走行時の土壌踏圧現象に関する三次元弾塑性有限要素解析

    上辻直哉,岡安崇史,松田浩幹,井上英二,光岡宗司,上野正実,深見公一郎

    第67回農業機械学会年次大会  2008.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Miyazaki  

  • 汎用有限要素解析ソフト(MSC.Marc)への拡張下負荷面モデルの導入とその妥当性の評価

    下村武司,岡安崇史,光岡宗司,井上英二

    第67回農業機械学会年次大会  2008.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Miyazaki  

  • Application of Discrete Element Method to Solve Shaking Separation Mechanisms in Head-Feeding Combine Harvester International conference

    Yamagata, Y., Okayasu, T., Eguchi, H., Sinkai, S., Furuno, Y., Mitsuoka, M., Inoue, E., Imamura, E.

    4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2008.5 

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    Venue:Taichung   Country:Taiwan, Province of China  

  • Computational Mechanical Consideration on Soil Compaction Behavior due to Wheel Traffics after Tillage International conference

    Okayasu, T., Matsuda, H., Furuno, Y., Kamitsuji, N., Mitsuoka, M., Inoue, E., Ueno, M., Fukami, K.

    4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2008.5 

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    Venue:Taichung   Country:Taiwan, Province of China  

  • 自脱型コンバインにおける揺動選別現象の解明に資する数値解析法の開発

    山形友佑,岡安崇史,新開 聡,光岡宗司,井上英二,今村英一

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • ハイパースペクトルカメラ画像による水稲の生育診断・品質評価に関する研究

    平田真理,岡安崇史,羽田野梨絵,山邉信利,安武隼人,光岡宗司,井上英二

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • Study on Durability Improvement of the Shallow Tillage Seeding Machine with Cutting Small Ditches International conference

    Fukami, K., Watanabe, T., Tanio, M., Masuda, K., Okayasu, T. Inoue, E., Kamitsuji, N., Ohba, H.

    ISTRO2009  2009.6 

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    Venue:Izmir   Country:Turkey  

  • Numerical Soil Compaction Analysis on Structured Soft Ground International conference

    Okayasu, T., Miyazaki, T., Kamitsuji, N., Mitsuoka, M., Inoue, E., Fukami, K.

    ISTRO2009  2009.6 

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    Venue:Izmir   Country:Turkey  

  • 小明渠作溝用サイドディスク設計への有限要素法の適用とその評価

    大庭裕史,岡安崇史,深見公一郎,上辻直哉,光岡宗司,井上英二

    第64回農業機械学会九州支部  2009.8 

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    Venue:Saga  

  • 簡易型農地環境モニタリングシステムの開発に関する研究

    岡安崇史,平田真理,宮本剛史,山邉信利,安武隼人,光岡宗司,井上英二,平野 修

    第64回農業機械学会九州支部  2009.8 

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    Venue:Saga  

  • 諫早湾干拓地農業における機械作業性の向上のための条件解明と耕うん特性の解析(第1報)干拓土壌におけるトラクタ走行およびロータリ耕うんによる土壌圧縮の解明

    宮嵜朋浩,岡安崇史,山田寧直,川原洋子,小林雅昭,井上英二

    第64回農業機械学会九州支部  2009.8 

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    Venue:Saga  

  • 小明渠浅耕播種機作溝部の耐久性向上に関する研究

    深見公一郎,渡辺輝夫,谷尾昌彦,岡安崇史,井上英二,上辻直哉,大庭裕史

    第64回農業機械学会九州支部  2009.8 

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    Venue:Saga  

  • 土壌踏圧現象の弾塑性有限要素解析に関する研究

    上辻直哉,岡安崇史,宮嵜朋浩,井上英二,光岡宗司,上野正実,深見公一郎

    農業環境工学関連学会2009年合同大会  2009.9 

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    Venue:Tokyo  

  • 3次元個別要素法による自脱コンバイン揺動選別部内の選別現象の可視化と評価

    岡安崇史,山形友佑,新開 聡,井上英二,光岡宗司,今村英一,水島 淳

    農業環境工学関連学会2009年合同大会  2009.9 

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    Venue:Tokyo  

  • 低タンパク米生産のためのハイパースペクトル画像の利用に関する研究

    平田真理,岡安崇史,安武隼人,山邉信利,井上英二,光岡宗司,稲葉繁樹

    農業環境工学関連学会2009年合同大会  2009.9 

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    Venue:Tokyo  

  • 小明渠浅耕播種機の耐久性向上に関する研究 −作溝用サイドディスクの軸受部に作用する力の測定−

    深見 公一郎,渡辺 輝夫,谷尾 昌彦,岡安 崇史,井上 英二,上辻 直哉

    農業環境工学関連学会2009年合同大会  2009.9 

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    Venue:Tokyo  

  • Development of simple field monitoring system for agricultural production and management International conference

    Okayasu, T., Yamabe,N. Mrui, A. Mitsuoka, M., Inoue, E.

    IWABE2009  2009.12 

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    Venue:Hanoi   Country:Viet Nam  

  • Tractor Running Tests at Isahaya Bay Reclamation International conference

    Miyazaki, T., Okayasu, T., Inoue, E.

    ISMAB2010  2010.4 

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    Venue:Fukuoka  

  • Development of Field Monitoring and Work Recording System in Agriculture International conference

    Okayasu,T., Yamabe, N., Marui, A., Miyazaki, T., Mitsuoka, M., Inoue, E.

    ISMAB2010  2010.4 

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    Venue:Fukuoka  

  • 構造・粘着力を有する土の弾塑性構成モデルの提案

    岡安崇史,上辻直哉,村上貴志,宮嵜朋浩,光岡宗司,井上英二

    第69回農業機械学会年次大会  2010.6 

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    Venue:Matuyama  

  • 簡易センサーネットワークを用いた環境情報の収集とその有効利用に関する研究

    岡安崇史,丸居 篤,光岡宗司,井上英二

    第45回地盤工学研究発表会  2010.6 

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    Venue:Matuyama  

  • Soil Compaction Analysis on Structured Cohesive Soft Ground International conference

    Okayasu, T., Kamitsuji, N., Murakami, T., Miyazaki, T., Mitsuoka, M., Inoue, E., Fukami, K.

    9th Asia-Pacific Conference of the ISTVS  2010.9 

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    Venue:Matuyama  

  • CMSを活用した簡易営農支援システムの開発

    岡安崇史,宮嵜朋浩,山邊信利,中野浩平,光岡宗司,井上英二

    第69回農業機械学会年次大会  2010.9 

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    Venue:Matuyama  

  • 構造・粘着力を有する土壌の踏圧現象に関する弾塑性有限要素解析

    岡安崇史,上辻直哉,村上貴志,宮嵜朋浩,深見公一郎,光岡宗司,井上英二

    第69回農業機械学会年次大会  2010.9 

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    Venue:Matuyama  

  • 情報化農業支援システムの開発とその妥当性評価

    吉田博通,南石晃明,加茂正彦,光岡宗司,井上英二

    農業情報学会2011  2011.5 

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    Venue:Tokyo  

  • 三次元有限要素解析による小明渠作溝用サイドディスク軸受部の強度評価

    寺尾悠希,岡安崇史,大庭裕史,深見公一郎,光岡宗司,井上英二

    第66回農業機械学会九州支部  2011.8 

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    Venue:Naha  

  • 情報化農業支援システムを利用した高品質いちご生産システムの開発

    吉田博通,岡安崇史,平野修,小野聖一朗,安部貞昭,清水宣雄,光岡宗司,井上英二

    第66回農業機械学会九州支部  2011.8 

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    Venue:Naha  

  • Prediction of compaction behavior of heavy clayey soil beneath an off-road vehicle International conference

    Miyazaki, T., Okayasu, T., Inoue, E.

    ASAE2011  2011.8 

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    Venue:Kentucky   Country:United States  

  • Feasibility Study on Field Monitoring and Work Recording System in Agriculture International conference

    Okayasu, T., Yoshida, H., Miyazaki, T., Nanseki, T., Mitsuoka, M., Inoue, E.

    ASAE2011  2011.8 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kentucky   Country:United States  

  • 簡易情報化農業支援システムの有効性に関する実証実験

    岡安崇史,吉田博通,光岡宗司,井上英二

    第70回農業機械学会年次大会  2011.9 

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    Venue:Hirosaki  

  • 小明渠作溝用サイドディスク設計への三次元有限要素法の適用とその評価

    岡安崇史,寺尾悠希,光岡宗司,井上英二,大庭裕史,深見公一郎,渡辺輝夫

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • 個別要素法(DEM)を用いた耕うん現象の予測とその妥当性の評価

    森下健,岡安崇史,光岡宗司,井上英二,深見公一郎

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • 三次元個別要素法によるバルク輸送コンテナ内積荷の動的挙動解析

    岡安崇史,井上英二,椎名武夫,中村宣貴,中野浩平

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • Monitoring of Hydraulic Gradient in Agricultural Land-use using Grid Wireless Sensor Network International conference

    Soetiarso, L. Goenadi, S., Andri P.N., Okayasu, T.

    International Workshop on ICT in Geo-Engineering  2012.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyoto  

  • Application of Change Point Analysis for Long-term Environmental Monitoring Data International conference

    Okayasu, T. Mitsuoka, M., Andri P.N., Inoue, E.

    International Workshop on ICT in Geo-Engineering  2012.5 

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    Venue:Kyoto  

  • 情報化農業支援システムを用いた圃場環境情報の可視化とその利活用法の検討

    岡安崇史,アンドリ プリマ ヌグロホ,吉田博通,南石晃明,光岡宗司,井上英二

    2012年度農業情報学会年次大会  2012.5 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • Development of intelligent irrigation system for greenhouse International conference

    Okayasu, T., Andri, P.,N., Fushihara, Hirano, O., Yoshida, H., Inoue, E.

    6th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2012.6 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jonju   Country:Korea, Republic of  

  • Strength evaluation of bearing in sidedisk for cutting small ditches by finite element method International conference

    Terao, H., Okayasu, T., Fkuda, K. Fukami, K., Mitsuoka, M., Inoue, E.

    6th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2012.6 

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    Venue:Jonju   Country:Korea, Republic of  

  • Modeling and prediction of soil cutting behavior by a plow International conference

    Okayasu, T., Morishita, K., Terao, H., Muneshi, M., Inoue, E., Fukami, K.

    CIGR-AgEng2012  2012.7 

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    Venue:Valencia   Country:Spain  

  • Feasibility Study on Informatization Agricultural Supporting System and Evaluation of its Validity International conference

    Okayasu, T., Yoshida, H., Andri, P.,N., Mitsuoka, M., Inoue, E.

    CIGR-AgEng2012  2012.7 

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    Venue:Valencia   Country:Spain  

  • バングラデシュにおける気象環境情報の連続モニタリングに関する実証実験

    岡安崇史,尾崎彰則,緒方和夫,アシル・アハメッド,宮島郁夫,大杉卓三,井上英二

    農業機械学会九州支部第66回九州支部例会  2012.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Miyazaki  

  • Development of field monitoring and intelligent actuating system in agriculture

    Andri P,N., Okayasu, T., Mitsuoka, M., Inoue, E.

    農業機械学会九州支部第66回九州支部例会  2012.8 

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    Venue:Miyazaki  

  • 摩擦接触を考慮した小明渠作溝用サイドディスクの3次元構造解析

    福田稔久,岡安崇史,寺尾悠希,深見公一郎,光岡宗司,井上英二

    農業機械学会九州支部第66回九州支部例会  2012.8 

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    Venue:Miyazaki  

  • 三次元個別要素法による耕うん現象のモデル化とその妥当性の検討

    岡安崇史,森下健,深見 公一郎,光岡 宗司,井上英二

    農業機械学会九州支部第66回九州支部例会  2012.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Miyazaki  

  • Development of Intelligent Control System for Greenhouse International conference

    Andri, P.N., Okayasu, T., Fushihara, H., Mitsuoka, M. and Inoue, E.

    AFITA/WCCA2012  2012.9 

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    Venue:Taipei   Country:Taiwan, Province of China  

  • Change Point Analysis for Environmental Information in Agriculture International conference

    Okayasu, T., Mitsuoka, M., Andri, P.N., Yoshida, H., Nanseki, T. and Inoue, E

    AFITA/WCCA2012  2012.9 

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    Venue:Taipei   Country:Taiwan, Province of China  

  • カメラ画像を用いた作物生育情報の抽出とその有効利用に関する研究

    吉田博通,岡安崇史,安部貞昭,光岡宗司,井上英二

    農業環境工学系関連合同大会2012  2012.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Utsunomiya  

  • 摩擦接触を考慮したサイドディスク軸受部の構造解析

    寺尾悠希,岡安崇史,福田稔久,深見公一郎,光岡宗司,井上 英二

    農業環境工学系関連合同大会2012  2012.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Utsunomiya  

  • 耕うん現象の三次元シミュレーションとその妥当性評価

    岡安崇史,福田稔久,森下 健,深見公一郎,光岡宗司,井上英二

    農業環境工学系関連合同大会2012  2012.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Utsunomiya  

  • Utilization of Field Monitoring Information to Agriculture - Potential of Informatization Agriculture in Bangladesh Invited International conference

    Okayasu, T.

    ICEAB2012  2012.11 

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    Venue:Kitakyushu  

  • Potential of Informatization Agriculture in Bangladesh-Installation and Utilization of Field Monitoring System in Agriculture- International conference

    Ozaki, A., Okayasu, T., Rahman, M.A., Choudhury, D.K., Ogata, K., Miyajima, I., Ahmed, A., Ohsugi, T., Inoue, E.

    ICEAB2012  2012.11 

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    Venue:Kitakyushu  

  • Development of Actuation Framework for Agricultural Informatization Supporting System

    Andri, N.P., Okayasu, T., Inoue, E., Hirai, Y. and Mitsuoka, M.

    IFAC2013 Bio Robotics Conf.  2013.3 

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    Venue:Osaka  

  • Soil-tool interaction analysis using fem & dem coupling method Invited International conference

    Takashi Okayasu

    International Seminar Program in Chonbuk National University  2013.5 

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    Venue:Jeonju   Country:Korea, Republic of  

  • Development of Web-based Change Point Analysis for Field Environmental Information in Agriculture International conference

    Andri Prima NUGROHO, Takashi OKAYASU, Muneshi MITSUOKA, Eiji INOUE, Lilik SUTIARSO, Yasumaru HIRAI

    International Symposium on Agricultural and Biosystem Engineering 2013  2013.8 

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    Venue:Yogyakarta   Country:Indonesia  

  • Modeling and Prediction of the Mechanical Interaction between Soil and Tillage Tool by DEM International conference

    Takahisa FUKUDA, Takashi OKAYASU, Keita TSUCHIYA, Eiji INOUE, Yasumaru HIRAI, Muneshi MITSUOKA

    11th Int. Conf. Anal. Discontinuous Deformation  2013.8 

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    Venue:Fukuoka  

  • 農業におけるソーシャルネットワークサービス活用の可能性の検討 Invited

    岡安崇史,有田大作,アンドリ プリマ ヌグロホ,増山晃史,井上英二,平井康丸,光岡宗司

    第67回農業機械学会九州支部例会  2013.9 

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    Venue:Oita  

  • 3次元個別要素法を用いた小明渠作溝シミュレーションとその精度評価

    福田稔久,土谷肇太,岡安崇史,深見公一郎,井上英二,平井康丸,光岡宗司

    第67回農業機械学会九州支部例会  2013.9 

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    Venue:Oita  

  • FEM-DEM準連成解析による小明渠作溝時のサイドディスク周辺応力の可視化

    岡安崇史, 寺尾悠希, 福田稔久, 土谷肇太, 深見公一郎, 井上英二, 平井康丸, 光岡宗司

    第72回農業食料工学会年次大会  2013.9 

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    Venue:Obihiro  

  • Environmental Change Point Analysis and Its Application to Agriculture,Proceedings of International conference on Instrumentation International conference

    Takashi Okayasu, Andri Prima Nugroho, Daisaku Arita, Akinori Ozaki, Muneshi Mitsuoka, Teruaki Nanseki, Eiji Inoue, Yasumaru Hirai

    Control, Information Technology and System Integration  2013.9 

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    Venue:Nagoya  

  • 3次元個別要素法を用いた耕うんシミュレーションの高速化手法の検討

    福田稔久,岡安崇史,土谷肇太,深見公一郎,井上英二,平井康丸,光岡宗司

    第72回農業食料工学会年次大会  2013.9 

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    Venue:Obihiro  

  • Elastoplastic deformation analysis on ballasted track under repeated loading condition International conference

    Takashi OKAYASU, Katsumi MURAMOTO, Takahisa NAKAMURA

    Workshop on Ballasted Track Maintenance between Japan and the United Kingdom  2013.11 

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    Venue:Tokyo  

  • What is informatization agriculture? International conference

    Takashi Okayasu

    International Symposium on Agricultural, Food, Environmental and Life Sciences in Asia, 2013 (AFELiSA 2013)  2013.11 

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    Venue:Miyazaki  

  • Development of Plant Growth Feature Measurement System Using Affordable Devices International conference

    Takashi Okayasu, Atsushige Sakai, Disaku Arita, Takashi Yoshinaga, Rin-ichiro Taniguchi, Eiji Inoue, Yasumaru Hirai, and Muneshi Mitsuoka

    International Symposium on Agricultural, Food, Environmental and Life Sciences in Asia, 2017 (AFELiSA 2017)  2013.11 

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    Venue:Fukuoka  

  • Utilization of two SNSs in Japan agriculture Invited International conference

    Takashi Okayasu

    2013 International Symposium on ICT Convergence in the Food and Agriculture  2013.12 

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    Venue:Seoul   Country:Korea, Republic of  

  • 農業におけるセンサーネットワークシステムの活用 Invited

    岡安崇史,有田大作,アンドリ プリマ ヌグロホ,星 岳彦,吉永 崇,井上英二,平井康丸,光岡宗司

    情報処理学会CVIM2015年5月研究会  2014.3 

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    Venue:Tokyo  

  • Agri-sensing for farmer-consumer communication International conference

    Daisaku Arita, Takashi Okayasu, Andri Prima Nuguroho, Takashi Yoshinaga

    Asian Workshop on Smart Sensor Systems  2014.3 

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    Venue:Taiwan  

  • ふたつのSNSによる農と食の見える化 Invited

    有田大作, 岡安崇史, プリマヌグロホアンドリ, 吉永崇

    情報処理学会CVIM2015年5月研究会  2014.3 

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    Venue:Tokyo  

  • Development of soil tillage simulator using fem-dem quasi-coupling method International conference

    Takashi Okayasu, Toshihisa Fukuda, Keita Tsuchiya, Koichiro Fukami, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014  2014.5 

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    Country:Taiwan, Province of China  

  • Effectiveness evaluation on utilization of two snss in japan agriculture International conference

    Takashi Okayasu, Daisaku Arita, Andri Prima Nugroho, Takehiko Hoshi, Takashi Yoshinaga, Eiji Inoue, Yasumaru Hirai, Muneshi Mitsuoka

    International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB) 2014  2014.5 

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    Country:Taiwan, Province of China  

  • 農業情報提供インターフェースとしてのARの活用

    石丸俊介,岡安崇史,吉永崇,有田大作,井上英二,平井康丸,光岡宗司

    2014年度農業情報学会年次大会  2014.5 

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    Venue:Tokyo  

  • Arduino用簡易環境計測シールドの開発とその妥当性の検討

    岡安崇史,アンドリ・プリマ・ヌグロホ,有田大作,星岳彦,安場健一郎,黒崎秀仁,井上英二,平井康丸,光岡宗司

    2014年度農業情報学会年次大会  2014.5 

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    Venue:Tokyo  

  • 農作業履歴収集の電子化とその活用技術の開発

    田中大介,岡安崇史,永尾宏臣,坂井佑輔,粟井一勝,井上英二,平井康丸,光岡宗司

    2014年度農業情報学会年次大会  2014.5 

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    Venue:Tokyo  

  • 3次元耕うんシミュレータの予測精度向上に関する研究

    岡安崇史,福田稔久,土谷肇太, 井上英二,平井康丸,光岡宗司,深見公一郎

    第73回農業食料工学会年次大会  2014.5 

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    Venue:Ginowan  

  • Deployment of agricultural information system – installation and utilization of field monitoring system on agricultural production in Yogyakarta, Indonesia International conference

    Andri Prima Nugroho, Takashi Okayasu, Sribudi Astuti, Muneshi Mitsuoka, Eiji Inoue, Yasumaru Hirai, Lilik Sutiarso

    International Symposium on Innovation Technology for Natural Resource Exploitation Toward Sustainable Environment  2014.6 

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  • 弾性限界面を考慮した下負荷面モデルによるバラストの繰返し負荷挙動の予測

    岡安崇史,村本勝己,中村貴久

    第49回地盤工学研究発表会  2014.7 

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    Venue:Kitakyushu  

  • 農作業履歴収集の電子化と圃場環境モニタリング装置の開発

    田中大介,岡安崇史,井上英二,平井康丸,光岡宗司,永尾宏臣,坂井佑輔,粟井一勝

    第68回農業機械学会九州支部例会  2014.8 

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    Venue:Fukuoka  

  • 農業情報提供のためのARインタフェースの開発

    石丸俊介,岡安崇史,吉永崇,有田大作,井上英二,平井康丸,光岡宗司

    第68回農業機械学会九州支部例会  2014.8 

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    Venue:Fukuoka  

  • 三次元統合解析手法を用いた耕うん作業機性能評価に関する研究

    土谷肇太,岡安崇史,福田稔久,深見公一郎,井上英二,平井康丸,光岡宗司

    第68回農業機械学会九州支部例会  2014.8 

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    Venue:Fukuoka  

  • Elastoplastic deformation behavior for ballast under monotonic and cyclic loading conditions International conference

    Takashi Okayasu, Takahisa Nakamurab, Katsumi Muramoto, Yoshitsugu Momoya

    International Conference on International Society for Terrain-Vehicle Systems  2014.9 

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    Venue:South Korea  

  • Agricultural information sensing and visualization for farmer-consumer communication International conference

    Daisaku Arita, Takashi Okayasu, Andri Prima Nugroho, Takashi Yoshinaga, Nobushige Doi, Atsushi Shimada, Rin-ichiro Taniguchi

    Joint Workshop on Machine Perception and Robotics  2014.10 

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  • Cyclic elastoplastic deformation analysis on Ballasted railway track Invited International conference

    Takashi OKAYASU, Takahisa NAKAMURA, Katsumi MURAMOTO, Yoshitsugu MOMOYA

    The Second Workshop of Ballasted Track between Japan & the UK Cedar Suite  2014.10 

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    Venue:Edinburgh  

  • 圃場環境情報の高密度計測のためのWiFi内蔵ワンボードマイコンの利用

    岡安崇史,堀本正文,アンドリ プリマ ヌグロホ,有田大作,星岳彦,安場健一郎,黒崎秀仁,井上英二,平井康丸,光岡宗司

    2015年度農業情報学会年次大会  2015.5 

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    Venue:Tokyo  

  • RGB-Dセンサを用いた植物体情報の計測とその精度評価

    境 淳成,岡安崇史,吉永 崇,有田大作,北野雅治,井上英二,平井康丸,光岡宗司

    2015年度農業情報学会年次大会  2015.5 

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    Venue:Tokyo  

  • 拡張現実を用いた農業情報提供アプリの開発とその有効性評価

    石丸俊介,岡安崇史,吉永 崇,有田大作,井上英二,平井康丸,光岡宗司

    2015業情報学会年次大会  2015.5 

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    Venue:Tokyo  

  • RGB-Dセンサを用いた植物体情報の計測とその精度評価

    境 淳成,岡安崇史,吉永 崇,有田大作,北野雅治,井上英二,平井康丸,光岡宗司

    第69回農業食料工学会九州支部例会  2015.8 

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    Venue:Kagoshima  

  • 圃場環境情報の高密度計測のための簡易計測装置の利用

    岡安崇史,アンドリ プリマ ヌグロホ,堀本正文,有田大作,星岳彦,安場健一郎,黒崎秀仁,井上英二,平井康丸,光岡宗司

    農業工学関連学会2015合同大会  2015.9 

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    Venue:Morioka  

  • 葉菜類生産における圃場環境計測システムの利用に関する研究

    田中大介,岡安崇史,井上英二,平井康丸,光岡宗司,島田和子,坂井佑輔,粟井一勝

    農業工学関連学会2015合同大会  2015.9 

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    Venue:Morioka  

  • 拡張現実を用いた農業情報提供システムのユーザビリティ評価

    石丸俊介,岡安崇史,吉永 崇,有田大作,井上英二,平井康丸,光岡宗司

    農業工学関連学会2015合同大会  2015.9 

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    Venue:Morioka  

  • オフロード用タイヤ表面に付着した土の定量評価手法の検討

    佐久間孝人, 岡安崇史,朴チャン,尾辻秀希,阪上最一,神村 真,井上英二, 平井康丸, 光岡宗司

    農業工学関連学会2015合同大会  2015.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Morioka  

  • Soil tillage simulation using FEM-DEM quasi-coupling method International conference

    Okayasu, T., Tsuchiya, K., Fukami, K., Inoue, E., Hirai, Y., Mitsuoka, M.

    ISTVS 13th European Conference  2015.10 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rome  

  • Agricultural informatics in Japan -For typical small and medium scale farmers- Invited International conference

    OKAYASU, T.

    THE 11TH INTERNATIONAL WORKSHOP ON NONDESTRUCTIVE QUALITY EVALUATION OF AGRICULTURAL, LIVESTOCK AND FISHERY PRODUCTS  2015.11 

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    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Taipei  

  • 中小規模農家向けのスマート農業支援システムの開発

    岡安崇史,アンドリ プリマ ヌグロホ,石丸俊介,田中大介,境 淳成,入江田大輝,松本千里,有田大作,吉永 崇,堀本正文,谷口倫一郎,井上英二,平井康丸,光岡宗司

    農業情報学会2015年度秋季大会  2015.12 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Kagoshima  

  • RGB-Dカメラと複数波長LEDを用いた植物形状・分光画像計測技術の開発

    岡安崇史,高橋秀平,伊藤次郎,長浜義典,井上英二,平井廉丸,光岡宗司

    2021年度農業情報学会年次大会  2021.5 

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    Event date: 2021.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 長期・安定運用が可能な植物フェノタイピングロボット

    伊藤次郎,岡安崇史,安武大輔,野村浩一,尾崎行生,井上英二,平井康丸

    2021年度農業情報学会年次大会  2021.5 

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    Event date: 2021.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 植物形質の時空間計測における各種RGB-Dセンサの利用と性能評価

    伊藤次郎,岡安崇史,安武大輔,野村浩一,岩尾忠重,尾崎行生,井上英二,平井康丸

    2021年度農業情報学会年次大会  2021.5 

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    Event date: 2021.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • Accuracy Evaluation of Self-position Estimation and Mapping Method for Farm Supporting Robot in Greenhouse

    Sadam A, A.M., Okayasu, T., Inoue, E., Hirai, Y.

    Annual Meeting of Japanese Society of Agricultural Informatics 2021  2021.5 

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    Event date: 2021.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • Navigation System Based on Object Tracking for Assisting Robot Operation in Greenhouse

    Sadam A, S.M. Widodo, S., Okayasu, T., Inoue, E., Hirai, Y.

    1st Japan, Thailand and Indonesia Joint Seminar on Sustainable Agricultural Development Goals (SADGs) 2021  2021.3 

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    Event date: 2021.3

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • Development of low cost plant phenotyping platform and spatio-temporal measurement of plant growth using RGB-D sensors

    Ito, J., Okayasu, T., Yasutake, D., Inoue, E., Hirai, Y., Ozaki, Y.

    1st Japan, Thailand and Indonesia Joint Seminar on Sustainable Agricultural Development Goals (SADGs) 2021  2021.3 

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    Event date: 2021.3

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 低コスト植物フェノタイピングプラットフォームを用いたホウレンソウの生育計測

    伊藤次郎,岡安崇史,野村浩一,安武大輔,岩尾忠重,尾崎行生,井上英二,平井康丸, 光岡宗司

    2020年度農業情報学会年次大会  2020.5 

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    Event date: 2020.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 低コストIoTデバイスを用いた植物フェノタイピングプラットフォームの開発

    伊藤次郎,岡安崇史,野村浩一,安武大輔,岩尾忠重,尾崎行生,井上英二,平井康丸, 光岡宗司:

    2020年度農業情報学会年次大会  2020.5 

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    Event date: 2020.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 画像から抽出した生育特徴量を用いたイチゴの生育評価の妥当性の検討

    室田涼輔 ,岡安崇史,田川 愛,政井隆之,田中泰洋.井上英二,平井康丸,光岡宗司

    2020年度農業情報学会年次大会  2020.5 

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    Event date: 2020.5

    Presentation type:Oral presentation (general)  

    Venue:Online   Country:Japan  

  • 画像情報を用いた植物生育特徴量の計測と利用 Invited

    岡安崇史,伊藤次郎,野村浩一,安武大輔,政井隆之,田中泰洋,岩尾忠重,尾崎行生,有田大作

    2020年電子情報通信学会総合大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:広島   Country:Japan  

  • コンバインのグレンタンクに堆積した籾層の底面圧力の推定

    井上 真大朗, 平井 康丸, 井上 英二, 岡安 崇史, 光岡 宗司

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • Fabとオープンソースを活用した植物フェノタイピングシステムの開発

    岡安崇史, 有田大作, 安武大輔, 黒崎秀仁, 井上英二, 平井康丸, 光岡宗司

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • Accuracy Evaluation of Low-cost Weight Measurement Sensor for Plants

    Hamidah, A., Okayasu, T., Hoshino, Y., Inoue, E., Hirai, Y., Mitsuoka, M., Nugroho, A.P., Sutiarso, L.

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • 葉菜類を対象としたフェノタイピングシステムの開発とその性能評価に関する研究

    伊藤次郎,岡安崇史,長浜義典,野村浩一,安武大輔,岩尾忠重,尾崎行生,井上英二,平井康丸,光岡宗司

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • 乗用トラクタの作業機位置による周波数応答の実験的解析

    山田剛巳, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • 心拍変動解析によるトラクタ操縦者のストレスレベル評価に関する基礎的研究

    森本倫太郎, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • ロータリ耕うんにおける土壌条件の違いによる作業機の振動データと耕うん砕土に関する研究

    諸隈賢吾, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • Stereo-camera installation configuration to improve accuracy of 3D ground reconstruction for tractor rollover prediction

    Shin, S., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y., Matsui M.

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • 弾性梁と質点の連結モデルによるこぎ歯作用時の穂の挙動解析

    古川 大二郎, 平井 康丸, 樫野 雅和, 井上 英二, 岡安 崇史, 光岡 宗司

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • 2つのロードセル荷重を用いた場合のコンバイングレンタンク内の籾質量検量式の精度評価

    樫野 雅和, 平井 康丸, 井上 英二, 岡安 崇史, 光岡 宗司

    第73回農業食料工学会九州支部例会  2019.11 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

    Venue:春日市   Country:Japan  

  • Integrated contextual learning environments with sensor network for crop cultivation education Concept and design

    Rin Ichiro Taniguchi, Daisaku Arita, Atsushi Shimada, Masanori Yamada, Yoshiko Goda, Ryota Yamamoto, Takashi Okayasu

    16th International Conference on Cognition and Exploratory Learning in Digital Age, CELDA 2019  2019.1 

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    Event date: 2019.11

    Language:English  

    Venue:Cagliari   Country:Italy  

    This paper presents an outline of our project, in which we develop an observation framework for integrating lecture and contextual learning in the field of crop cultivation. Specifically, we will use multi sensing of learners' activities in classrooms, and contextual learning in fieldwork, farm planting, and farming environments. The motivation for our project is twofold: First, crop cultivation provides a powerful illustration of educational technology. It requires both explicit knowledge (from lectures) and implicit knowledge (from contextual learning outside of class). Second, from a practical viewpoint, the number of Japanese farmers is shrinking due to low income and to aging population. Thus, in order to maintain crop yields, farming skills must be transferred efficiently to novice farm workers. Herein, the major features of our framework will be described.

  • Smart Agriculture Utilizing Affordable IoT Devices Invited

    Okayasu T.

    International Symposium on Agriculture, Food, Environmental and Life Science in Asia 2019  2019.11 

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    Event date: 2019.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Tottori   Country:Japan  

  • Effects of unflooded periods and growth stage on nitrogen mineralization of green manure (hairy vetch) under flooded conditions

    Ko, K. M. M. , Hirai Y. , Yamakawa, T. , Inoue, E., Okayasu, T., Mitsuoka, M.

    International Symposium on Agriculture, Food, Environmental and Life Science in Asia 2019  2019.11 

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    Event date: 2019.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tottori   Country:Japan  

  • Appropriate adaptation of precision agriculture technology in open field cultivation in tropics

    A. P. Nugroho, L. Sutiarso, T. Okayasu

    3rd International Symposium on Agricultural and Biosystem Engineering, ISABE 2019  2019.11 

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    Event date: 2019.8

    Language:English  

    Venue:South Sulawesi   Country:Indonesia  

    Tropical agriculture production is profoundly affected by the uncontrollable environmental condition. To obtain good agricultural products, farmers manage their farm to fit with the variation of weather and season. The farming managements are generally determined according to farmers personal knowledge, gained from the long-term experience from preceding years. Nowadays, climate change intensifies unpredictable weather and its unstable distribution. Consequently, conventional farming management considering the climate change factor should be considered. The farming management should face the dynamic change of weather condition as well as improve the farmer's knowledge towards the implementation of precision agriculture approach. The objective of this study was to introduce an appropriate adaptation of precision agriculture technology by the utilization of information and communication technology (ICT) to improve conventional farming management in tropical agriculture production. The framework is implementing cloud technology as a backbone, which can be extended with various knowledge such as data science, plant biology, plant physiology, biophysical, and biomechanical. The appropriate adaptation of precision agriculture represented by the improvement of the conventional farming method using the technological aspect by fostering their knowledge to adopt modern agriculture empowered with Information and Communication Technology (ICT). Learning process from data-information-knowledge on the application of precision agriculture will be documented at the PA Knowledge Management System.

  • Development of environmental monitoring systems based on LoRa with cloud integration for rural area

    M. S. Hidayat, A. P. Nugroho, L. Sutiarso, T. Okayasu

    3rd International Symposium on Agricultural and Biosystem Engineering, ISABE 2019  2019.11 

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    Event date: 2019.8

    Language:English  

    Venue:South Sulawesi   Country:Indonesia  

    Wireless Sensor Network (WSN) is widely used in field environmental monitoring recently, because of its ease of use and being able to simplify the complexity installation in real application. Indonesia is an agricultural country with more than 16.5 million of farming land, most of the farming land is located in a rural area. The problems on the implementation of IoT-based environmental monitoring system in a rural area is the limited signal and energy. Accordingly, the objective of this study was to develop an Environmental Monitoring System based on LoRa in a rural area with the implementation of the Local Management Subsystem (LMS) and Global Management Subsystem (GMS) framework to optimize the existing development of the Environmental Monitoring System with focused on optimum distance by measuring the RSSI, signal strength and packet loss. The research was conducted in Bulaksumur Universitas Gadjah Mada, Yogyakarta, with four zones and various obstacles. As the result, Zone D with line of sight was the best result for getting the affordable distance for data transmission. This Zone can reach over 800 m distance with only 20% packet loss.

  • Crop growth prediction model at vegetative phase to support the precision agriculture application in plant factory

    Aulia Rizkiana, Andri Prima Nugroho, Muhammad Abiyyu Irfan, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019  2019.12 

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    Event date: 2019.7

    Language:English  

    Venue:Surakarta   Country:Indonesia  

    Plant factory is an extensive cultivation that produce vegetable under a controllable environment. The concept of Precision Agriculture has been introduced to enhance the plant factory production by monitoring of crop growth intensively. Crop growth can be estimated using a mathematical model to determine the state of the plant during the growth period. However, the application of a crop growth model in plant factory has several challenges because every plant has a specific model to be observed. The objective of this study was to construct a crop growth prediction model for vegetative development phase. The activity covers the development of mathematical model and model validation using Chili (Capsicum frutescens) as a preliminary experiment. Four samples (S1, S2, S3, S4) of Chili with age of five weeks after planting were used and measured daily for 30 days to get the actual height (cm). Three crop height observation data set (S1, S1, S3), were used to develop a mathematical model and the rest dataset was for model validation and evaluation. Linear and polynomial model were applied to obtain the appropriate prediction. The model was validated and evaluated using the Root Mean Squared Error (RMSE) and Mean Absolute Percentage Error (MAPE). As a result, Determination coefficient (R2) of the Linear model was 0.9667, and the RMSE was 2.16; The Polynomial model shows R2 0.98755, and RMSE RMSE 1.68. The result of the model that is suitable for the Chili crop during the vegetative phase is the polynomial model with error rate of 1,68%.

  • Implementation of leaf motion monitoring system to study plant behavior with variations of the lighting interval in Capsicum annuum L.

    Siti Maghfiroh, Andri Prima Nugroho, Adetya Raya Putra, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019  2019.12 

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    Event date: 2019.7

    Language:English  

    Venue:Surakarta   Country:Indonesia  

    Circadian rhythm is a biological rhythm in a plant that has a 24-hour period, which affects the plant activities, such as metabolism processes, physiology processes, and plant behavior. Generally, Circadian rhythm has two factors affecting the synchronizing the biological clock: Light and temperature cycle. In our previous studies, plant motion monitoring systems based on leaf movement have been developed to determine the circadian rhythms of a regular plant under the normal condition. However, the performance of the system to monitor the plant rhythm under abnormal conditions relating to the biological clock, lighting interval treatment, does not establish yet. The objective of this study was to implement a plant motion monitoring system to study plant behavior with 16-hour and 12-hour lighting interval treatment. The plant's motion of Chili (Capsicum annum L.) was observed in a growth chamber equipped with an infrared camera and raspberry pi, which is used to take pictures continuously at certain intervals using top projection view. Periode of circadian rhythms phase, the amplitude of the plant were analyzed and compared. As a result, plant motion monitoring system could be used to monitor the circadian rhythm on Chili (Capsicum annum L.) with the variation of lighting interval (12-h and 16-h). The amplitude of 16-hour lighting has higher and the period shift indicated late oscilation comparing the 12-hour lighting. The higher amplitude and late in oscilation is accordance with previous studies that environmental cues, such as light, can reset the clock and can also affect the rhythm output clock.

  • Development of mobile RoboVision with stereo camera for automatic crop growth monitoring in plant factory

    Anggit Wijanarko, Andri Prima Nugroho, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019  2019.12 

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    Event date: 2019.7

    Language:English  

    Venue:Surakarta   Country:Indonesia  

    Plant Factory is a large-scale vegetable production method with limited, closed, and controlled space. This system is endeavored to support the sustainability of agricultural production system by applying the concept of precision agriculture. This concept is implemented to observe plant growth effectively and efficiently. Currently, in the conventional way monitoring carried out one by one, using the computer vision technology will help accelerate plant growth monitoring in the Plant Factory. However, in the application in a Plant Factory, it requires many cameras to be used for growth monitoring for each crop to support the precise measurement. So, it is necessary to have a system that supports the mobility of the camera module inside the plant factory. The objective of this study was to design the Mobile RoboVision using the stereo camera for automatic Crop Growth Monitoring. The system consists of three modules: Stereo camera positioning system using M1 Computer Numerical Control (1000mm x 1000mm of size) equipped with x and y motor for flexible movement; Image acquisition system using Raspberry Pi B+ as microcomputer unit installed Stereo Camera standard with quad IR Illuminator and sensors; Data collection system using Cloud Storage. The camera positioning system manages the position of the camera module to stop in every crop in specified coordinate C1..n = {(x1, y1), (x2, y2), ..(xn, yn)} and capture stereo images automatically. The captured image will be managed in a data collection system using Cloud System to provide flexible and convenient access for further analysis.

  • Design and performance evaluation of multi-camera for continuous plant motion monitoring system

    Dian Fatmawati, Andri Prima Nugroho, Arifin Widiyatmoko, Lilik Sutiarso, Takashi Okayasu

    International Conference on Science and Applied Science 2019, ICSAS 2019  2019.12 

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    Event date: 2019.7

    Language:English  

    Venue:Surakarta   Country:Indonesia  

    Circadian rhythm is a biological rhythm that has a period of 24 hours. Leaf movement is one of physical indicator that commonly used to detect the circadian rhythms in the plant. In its application, it is required to design a plant motion monitoring system that can work automatically and continuously to estimate the period of plant motion and quantify the circadian rhythm. Generally, a plant monitoring system uses a top view projection to monitor plant activity. To extend its functionality, the side view projection was also important to monitor the plant behavior from a horizontal point of view. The objective of this study was to design and evaluate the performance of the Top and Side view projection as multi-camera for continuous plant motion monitoring system. The system composed of two IR LED cameras with Top and Side view projection and connected to the microcomputer (Raspberry Pi3 B+). The data were analyzed by Optical Flow method using OpenCV Library applying Shi-Tomasi and Lucas Kanade. Estimation of circadian rhythms was using the FFT (Fast Fourier Transform) method. The multi-camera system was evaluated to monitor the motion of Chili (Capsicum annum L.) by observing the time series of circadian rhythm, Period, Amplitude, and Phase. As a result, the system could be used to monitor the circadian rhythm for both Top and Side view projection. The Frequency and Period have the same value 0,00001157 and 24-hour. The Top view projection has higher amplitude means, for the same object motion it could represent clear motion.

  • Heat storage induced by salinity stratification in tropical saline aquaculture ponds

    Akinori Ozaki, Panitan Kaewjantawee, Monton Anongponyoskul, Nguyen Van Thinh, Masaru Matsumoto, Masayoshi Harada, Kunihiko Hamagami, Takashi Okayasu

    2019 ASABE Annual International Meeting  2019.1 

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    Event date: 2019.7

    Language:English  

    Venue:Boston   Country:United States  

    In saline aquaculture ponds in the tropics, intermittent rainfall during the rainy season can cause salinity stratification, and strong solar radiation can cause thermal stratification. The combination of these factors may result in thermohaline convection in the ponds. Thermohaline convection in a closed saline water body can in turn induce heat storage in these ponds. Heat storage in saline aquaculture ponds strongly influences the water environment and consequently affects the quality and yield of aquaculture products from these ponds. We investigated how heat storage in experimental saline aquaculture ponds was influenced by the variation in the weather and water properties during the rainy season. If the pond stratifies into three layers with a salinity gradient in the middle layer, heat storage can occur. The salinity gradient prevents heat from escaping from the lower layer by effectively insulating it from nighttime radiative cooling. When the salinity gradient is perturbed by rainfall, solar radiation, or wind, the heat stored in the pond can begin to dissipate. We explain how the stratification stability and the heat balance in the ponds account for the occurrence of heat storage in the ponds.

  • Heat storage induced by salinity stratification in tropical saline aquaculture ponds

    Akinori Ozaki, Panitan Kaewjantawee, Monton Anongponyoskul, Nguyen Van Thinh, Masaru Matsumoto, Masayoshi Harada, Kunihiko Hamagami, Takashi Okayasu

    2019 ASABE Annual International Meeting  2019.1 

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    Event date: 2019.7

    Language:English  

    Venue:Boston   Country:United States  

    In saline aquaculture ponds in the tropics, intermittent rainfall during the rainy season can cause salinity stratification, and strong solar radiation can cause thermal stratification. The combination of these factors may result in thermohaline convection in the ponds. Thermohaline convection in a closed saline water body can in turn induce heat storage in these ponds. Heat storage in saline aquaculture ponds strongly influences the water environment and consequently affects the quality and yield of aquaculture products from these ponds. We investigated how heat storage in experimental saline aquaculture ponds was influenced by the variation in the weather and water properties during the rainy season. If the pond stratifies into three layers with a salinity gradient in the middle layer, heat storage can occur. The salinity gradient prevents heat from escaping from the lower layer by effectively insulating it from nighttime radiative cooling. When the salinity gradient is perturbed by rainfall, solar radiation, or wind, the heat stored in the pond can begin to dissipate. We explain how the stratification stability and the heat balance in the ponds account for the occurrence of heat storage in the ponds.

  • Affordable field environmental monitoring and plant growth measurement system for smart agriculture

    Takashi Okayasu, Andri Prima Nugroho, Atsushige Sakai, Disaku Arita, Takashi Yoshinaga, Rin-Ichiro Taniguchi, Masafumi Horimoto, Eiji Inoue, Hirai Yasumaru, Mitsuoka Muneshi

    11th International Conference on Sensing Technology, ICST 2017  2018.2 

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    Event date: 2017.12

    Language:English  

    Venue:Sydney   Country:Australia  

    Nowadays, various affordable sensors and devices have been developed and utilized in a wide area of sectors. Needless to say, agriculture sector is no exception. They have already been applied to improve agricultural production in terms of advancing the knowledge and techniques of farming, reducing production costs, and improving the quality of agricultural produce. This paper introduces the current situation and example of the affordable sensors and devices for field environment monitoring and plant growth measurement in smart agriculture.

  • Sensing technologies for advanced smart agricultural systems

    Hideaki Uchiyama, Shunsuke Sakurai, Yoshiki Hashimoto, Atsutoshi Hanasaki, Daisaku Arita, Takashi Okayasu, Atsushi Shimada, Rin-Ichiro Taniguchi

    11th International Conference on Sensing Technology, ICST 2017  2018.2 

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    Event date: 2017.12

    Language:English  

    Venue:Sydney   Country:Australia  

    We introduce our sensing technologies to acquire agricultural information, such as image-based plant phenotyping, harvest quantity data, and localization information using a camera in a greenhouse. Commercial systems exist that support agriculture, but many unresolved issues remain regarding optimization of farming sustainability and productivity. Therefore, we intend to apply state-of-the-art information and communication technology (ICT) to tackle these agricultural issues and to investigate their limitations for developing advanced smart agricultural systems.

  • An Easy-to-Setup 3D Phenotyping Platform for KOMATSUNA Dataset

    Hideaki Uchiyama, Shunsuke Sakurai, Masashi Mishima, Daisaku Arita, Takashi Okayasu, Atsushi Shimada, Rin-Ichiro Taniguchi

    16th IEEE International Conference on Computer Vision Workshops, ICCVW 2017  2018.1 

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    Event date: 2017.10

    Language:English  

    Venue:Venice   Country:Italy  

    We present a 3D phenotyping platform that measures both plant growth and environmental information in small indoor environments for plant image datasets. Our objective is to construct a compact and complete platform by using commercial devices to allow any researcher to begin plant phenotyping in their laboratory. In addition, we introduce our annotation tool to manually but effectively create leaf labels in plant images on a pixel-by-pixel basis. Finally, we show our RGB-D and multiview datasets containing images in the early growth stages of the Komatsuna with leaf annotation.

  • コンバインの移動軌跡に基づく集荷穀物に対応した収穫面積の自動計算手法

    平井康丸, 緒方聖大, 鹿内健志, 井上英二, 岡安崇史, 光岡宗司

    農業食料工学会年次大会講演要旨  2017.9 

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  • 水稲籾のかさ密度と登熟の関係

    吉嵜隆一, 平井康丸, 井上英二, 岡安崇史, 光岡宗司, 鹿内健志

    農業食料工学会年次大会講演要旨  2017.9 

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  • UECS方式簡易グロースチャンバを用いた植物体の生育特徴量計測

    最上雄介, 岡安崇史, 黒崎秀仁, 星岳彦, 安場健一郎, 井上英二, 平井康丸, 光岡宗司

    九州農業試験研究機関協議会研究発表会発表要旨集(Web)  2017 

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  • ICT application for typical small- and medium-scale farmers in Japan Agriculture Invited

    岡安 崇史

    Conference on State-of-the-Art Technology to Drive Agriculture Productivity in the Next Quarter of the Century  2016.6 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tokyo   Country:Japan  

    中小規模農業経営におけるICT応用に関する課題やその具体的導入方法について解説した。

  • 暖地輪作体系における乾田直播圃場の透水性制御技術に関する研究―振動ローラ鎮圧が水稲の生育・収量に及ぼす影響の解明―

    深見公一郎, 中野恵子, 椋木俊文, 稲葉繁樹, 松尾直樹, 土屋史紀, 佐々木豊, 岡安崇史

    農業食料工学会年次大会講演要旨  2016.5 

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  • Elastoplastic deformation behavior for ballast under monotonic and cyclic loading conditions

    Takashi Okayasu, Takahisa Nakamura, Katsumi Muramoto, Yoshitsugu Momoya

    18th International Conference of the International Society for Terrain-Vehicle Systems, ISTVS 2014  2014.1 

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    Event date: 2014.9

    Language:English  

    Venue:Seoul   Country:Korea, Republic of  

    Various constitutive models for soils and gravels have been developed in the last century. Among them unconventional plasticity theory is a key and necessary approach for describing cyclic deformation behavior of materials. The "subloading surface model" proposed by Hashiguchi, which belongs to the unconventional plasticity framework, does not assume a purely-elastic domain inside a yield surface and premises that an inelastic strain is induced by stress changes inside the yield surface. It is able to describe the mechanical behavior of materials such as not only smooth elastoplastic transition but also cyclic loading behavior. Thus, elastoplastic constitutive models for various materials based on this model have been developed up to present. Moreover computational analysis methods such as a finite element method (FEM) incorporating this constitutive model have been utilized for solving problems in geotechnical engineering fields. On the other hand, gravel such as ballast causes elastoplastic deformation in the proportional loading process. However the accumulation of the plastic deformation under a cyclic loading condition is smaller than that for typical soils such as sand and clay in general since the elastic property of ballast particle is high and the slip between each ballast is remarkably suppressed by the particles' packing. In this study, the subloading surface model is modified by assuming an existence of the elastic domain surface inside the subloading surface so as to realistically describe the inelastic deformation behavior of ballast including monotonic and cyclic loading conditions. The validity of the model is verified by the comparison with large-scale triaxial compression test data for both loading conditions.

  • パターン認識を用いた水稲の収量・タンパク質含有率予測モデル

    平井康丸, 山川武夫, 森裕樹, 南石晃明, 井上英二, 岡安崇史, 光岡宗司

    日本土壌肥料学会講演要旨集  2014.9 

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  • ローラ鎮圧による暖地乾田直播圃場の漏水防止技術―X線CT画像に基づく鎮圧土壌の構造解析―

    深見公一郎, 椋木俊文, 中野恵子, 松尾直樹, 岡安崇史, 広間達夫, 土屋史紀, 佐々木豊

    九州農業研究発表会専門部会発表要旨集  2014.8 

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  • 三次元統合解析手法を用いた耕うん作業機性能評価に関する研究

    土谷肇太, 岡安崇史, 福田稔久, 深見公一郎, 井上英二, 平井康丸, 光岡宗司

    九州農業研究発表会専門部会発表要旨集  2014.8 

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  • 3次元耕うんシミュレータの予測精度向上に関する研究

    岡安崇史, 福田稔久, 土谷肇太, 井上英二, 平井康丸, 光岡宗司, 深見公一郎

    農業食料工学会年次大会講演要旨  2014.5 

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  • 暖地輪作体系における乾田直播圃場の透水性制御技術に関する研究―ローラ鎮圧作業に及ぼす土壌水分の影響―

    深見公一郎, 中野恵子, 松尾直樹, 土屋史紀, 佐々木豊, 椋木俊文, 岡安崇史, 広間達夫

    農業食料工学会年次大会講演要旨  2014.5 

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  • 7-1-6 パターン認識を用いた水稲の収量・タンパク質含有率予測モデル(7-1 肥料および施肥法,2014年度東京大会)

    平井 康丸, 山川 武夫, 森 裕樹, 南石 晃明, 井上 英二, 岡安 崇史, 光岡 宗司

    日土肥講要  2014  一般社団法人 日本土壌肥料学会

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  • Environmental change point analysis and its application to agriculture

    Takashi Okayasu, Andri Prima Nugroho, Daisaku Arita, Akinori Ozaki, Mitsuoka Muneshi, Teruaki Nanseki, Eiji Inoue, Hirai Yasumaru

    2013 52nd Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2013  2013.1 

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    Event date: 2013.9

    Language:English  

    Venue:Nagoya   Country:Japan  

    Field environmental information such as air temperature, humidity, and solar radiation would be important not only for evaluation of crop growth progress, status and quality or the occurrence of pests and diseases, but also for optimization of agricultural production processes such as plating, irrigation, fertilization, pest control, and harvesting. However, measured data stored in an agricultural information database, would be vast data with the increase in the number of monitoring devices and sensors installed in such devices. Thus, in order to extract feature values from such vast data, it is necessary to develop some numerical technologies and methods. In this study, the change point analysis based on Singular Spectrum Transformation (SST) was applied for extracting the difference of cultivation environmental conditions in each the tomato greenhouse. The change point scores were detected from the change of CO2 concentration data clearly. They agreed well with the farm work history recorded by a corporative farmer.

  • Environmental change point analysis and its application to agriculture

    Takashi Okayasu, Andri Prima Nugroho, Daisaku Arita, Akinori Ozaki, Mitsuoka Muneshi, Teruaki Nanseki, Eiji Inoue, Hirai Yasumaru

    2013 52nd Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2013  2013.1 

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    Event date: 2013.9

    Language:English  

    Venue:Nagoya   Country:Japan  

    Field environmental information such as air temperature, humidity, and solar radiation would be important not only for evaluation of crop growth progress, status and quality or the occurrence of pests and diseases, but also for optimization of agricultural production processes such as plating, irrigation, fertilization, pest control, and harvesting. However, measured data stored in an agricultural information database, would be vast data with the increase in the number of monitoring devices and sensors installed in such devices. Thus, in order to extract feature values from such vast data, it is necessary to develop some numerical technologies and methods. In this study, the change point analysis based on Singular Spectrum Transformation (SST) was applied for extracting the difference of cultivation environmental conditions in each the tomato greenhouse. The change point scores were detected from the change of CO2 concentration data clearly. They agreed well with the farm work history recorded by a corporative farmer.

  • 3次元個別要素法を用いた耕うんシミュレーションの高速化手法の検討

    福田稔久, 岡安崇史, 土谷肇太, 深見公一郎, 井上英二, 平井康丸, 光岡宗司

    農業食料工学会年次大会講演要旨  2013.9 

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  • 水稲乾田直播栽培における振動ローラ加速度応答に基づく圃場透水性制御技術

    深見公一郎, 中野恵子, 松尾直樹, 土屋史紀, 佐々木豊, 椋木俊文, 岡安崇史, 広間達夫

    農業食料工学会年次大会講演要旨  2013.9 

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  • FEM‐DEM準連成解析による小明渠作溝時のサイドディスク周辺応力の可視化

    岡安崇史, 寺尾悠希, 福田稔久, 土谷肇太, 深見公一郎, 井上英二, 平井康丸, 光岡宗司

    農業食料工学会年次大会講演要旨  2013.9 

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  • Modeling and prediction of the mechanical interaction between soil and tillage tool by DEM

    T. Fukuda, Takashi Okayasu, K. Tsuchiya, Eiji Inoue, Hirai Yasumaru, Mitsuoka Muneshi, H. Terao

    11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013  2013.10 

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    Event date: 2013.8

    Language:English  

    Venue:Fukuoka   Country:Japan  

    Tillage is one of important operations to improve and maintain top soil condition in farmland. The soil condition is different according to soil types and region in general. Various kinds of the tillage methods and tools have been developed up to present. However, their developments have been often conducted by experience and sense using trial and error methods. From these backgrounds, developments of numerical analysis method have been tried to clarify the mechanism for soil-tillage interaction phenomena and to reduce the developing time and costs. In this study, the soil-tillage interaction simulation was established by a three-dimensional geometry of a disk plow and soil layer modeled by using Discrete Element Method (DEM). Traction resistances acting on the disk plow and soil cutting phenomena were estimated in the simulation. They were compared with the experimental results. The simulated results agreed qualitatively with the experimental results.

  • Modeling and prediction of the mechanical interaction between soil and tillage tool by DEM

    T. Fukuda, Takashi Okayasu, K. Tsuchiya, Eiji Inoue, Hirai Yasumaru, Mitsuoka Muneshi, H. Terao

    11th International Conference on Analysis of Discontinuous Deformation, ICADD 2013  2013.10 

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    Event date: 2013.8

    Language:English  

    Venue:Fukuoka   Country:Japan  

    Tillage is one of important operations to improve and maintain top soil condition in farmland. The soil condition is different according to soil types and region in general. Various kinds of the tillage methods and tools have been developed up to present. However, their developments have been often conducted by experience and sense using trial and error methods. From these backgrounds, developments of numerical analysis method have been tried to clarify the mechanism for soil-tillage interaction phenomena and to reduce the developing time and costs. In this study, the soil-tillage interaction simulation was established by a three-dimensional geometry of a disk plow and soil layer modeled by using Discrete Element Method (DEM). Traction resistances acting on the disk plow and soil cutting phenomena were estimated in the simulation. They were compared with the experimental results. The simulated results agreed qualitatively with the experimental results.

  • 3次元個別要素法を用いた小明渠作溝シミュレーションとその精度評価

    福田稔久, 土谷肇太, 岡安崇史, 深見公一郎, 井上英二, 平井康丸, 光岡宗司

    九州農業研究発表会専門部会発表要旨集  2013.8 

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  • 振動式鎮圧ローラによる暖地乾田直播圃場の漏水防止技術―振動ローラの改良と最適な土壌水分条件の解明―

    深見公一郎, 中野恵子, 松尾直樹, 土屋史紀, 佐々木豊, 椋木俊文, 岡安崇史, 広間達夫

    九州農業研究発表会専門部会発表要旨集  2013.8 

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  • Study on knowledge management platform about the field of agricultural infomatization

    Eiji Aoki, Ken Kudo, Akira Fukuda, Tsuneo Nakanishi, Shigeaki Tagashira, Takashi Okayasu, Naoyuki Tsuruda, Satoru Yamasaki, Yasuhito Imura

    2012 6th International Conference on Complex, Intelligent, and Software Intensive Systems, CISIS 2012  2012.7 

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    Event date: 2012.7

    Language:English  

    Venue:Palermo   Country:Italy  

    In the region of Japan, broadband network and informatization have spread. However the field of agriculture has not come willingly. The infrastructure that has not been enough in mountainous areas, but various initiatives of computerization are being started using production and distribution as the subjects. Since this began in reality, there are still insufficient matters that have been resolved in regards to the technical validations and cost effectiveness. Therefore necessitates pouring in a tremendous amount of expertise, possibility is ICT and its related technologies of sensors. In our research and developments, we create demo hardware for the experiment using in the farm collected data. On the other hand, making study group with farmers for accumulation of data and experience. That visualized information configure to the platform of knowledge management.

  • Modeling of soil displacement and soil strain distribution under the traveling wheel

    Khwantri Saengprachatanarug, Masami Ueno, Eizo Taira, Takashi Okayasu

    17th International Conference of the International Society for Terrain Vehicle Systems 2011, ISTVS 2011  2011.11 

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    Event date: 2011.11

    Language:English  

    Venue:Blacksburg, VA   Country:United States  

    The empirical Gaussian-based mathematical model of soil displacement increment under the traveling wheel was extended to be applicable to any depth of soil layer under the ground contact surface of the wheel. The unknown coefficients were obtained by least mean-square fitting with the soil displacement curve measured through laboratory sophisticated soil bin test. Then those coefficients were re-derived as a function of depth. The movement of soil particles at the ground contact surface was modeled by dividing into 2 kinds; first, the free movement of soil particles before contact with the wheel and the movement of the particles after they are separated from the wheel surface and the second type represent soil movement during attachment to the wheel surface. By combining the models for the ground contact surface of the wheel with that for all soil layers, the extended model that can describe soil displacement increment in both the vertical and horizontal directions using one equation was established. The predicted results obtained using the extended model fitted quite well with the measured values. The predicted strain increment distributions show the same trends as the measured distributions.

  • Feasibility study on field monitoring and work recording system in agriculture

    Takashi Okayasu, Hiromichi Yoshida, Tomohiro Miyazaki, Teruaki Nanseki, Mitsuoka Muneshi, Eiji Inoue

    American Society of Agricultural and Biological Engineers Annual International Meeting 2011  2011.8 

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    Event date: 2011.8

    Language:English  

    Venue:Louisville, KY   Country:United States  

    Simple field monitoring system for optimizing and improving agricultural production process and management is developed by the built-in mail sender data logger unit with some weather and field monitoring sensors. In this monitoring system, all the monitoring data are once transferred and stored to mail servers. Thereafter the data are transferred periodically to the agricultural information database system. The database system was fully developed using open software such as apache (web server), MySQL, PHP, Java, CMS (Contents Management System) and so on. The stability of the monitoring system was verified using more than 20 monitoring units at four test sites where weather, crop type and farm size are different. On the other hand, work recording system to manage and optimize current production process was also developed and integrated to the developed database system. A list of farming processes and schedules was arranged flexibly by a farmer thorough a web browser. All the process data were entered into the information database by using mobile device and/or PC. The availability and validity of the developed recording system were verified by feasibility studies in the real farming sites.

  • Prediction of compaction behavior of heavy clayey soil beneath an off-road vehicle

    Tomohiro Miyazaki, Takashi Okayasu, Eiji Inoue

    American Society of Agricultural and Biological Engineers Annual International Meeting 2011  2011.8 

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    Event date: 2011.8

    Language:English  

    Venue:Louisville, KY   Country:United States  

    Soil compaction is one of the major subjects in a well-mechanized modern agricultural system. In order to reduce the risk of soil compaction, the mechanical impacts to topsoil and subsoil during agricultural machinery operations have to be controlled. Soil compaction test using an off-road vehicle was conducted in the reclamation farmland at Isahaya bay, Nagasaki, Japan. The farmland was formed by sedimentary heavy clayey soil having high water-holding capacity and strong cohesion. In all the tests, the penetration resistance (cone index) of the soil and the bulk density before and after the vehicle running was measured in the field. The detail of soil mechanical properties was obtained from typical soil tests such as the standard compression, oedometer and triaxial compression test, respectively. On the other hand, an unconventional elastoplastic constitutive model for soils having the structure and cohesion was proposed by the superloading-yield/subloading surface model with Hashiguchi and Mase concept (2007). The validity of the model was evaluated by comparisons with the test data mentioned above.

  • Drucker‐Pragerモデルと下負荷面モデルによる土壌変形の予測特性の比較

    橋口公一, 斉藤公志郎, 岡安崇史, 堤成一郎

    農業機械学会年次大会講演要旨  2000.4 

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  • 車輪走行に伴う地盤変形の弾塑性有限要素解析

    岡安崇史, 橋口公一, 池末英二, 堤成一郎, 上野正実, 鹿内健志

    農業機械学会年次大会講演要旨  2000.4  農業食料工学会

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  • 車輪の走行性能に及ぼす繰り返し走行の影響

    上野正実, 深見公一郎, 鹿内健志, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  2000.4 

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  • 車輪の繰り返し走行に伴う土の変形プロセス

    上野正実, 深見公一郎, 鹿内健志, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  2000.4 

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  • 走行車輪下の不均一な土壌変形とけん引力の変動

    上野正実, 深見公一郎, 鹿内健志, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  2000.4 

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  • 接線応力速度を考慮した非弾性構成式

    橋口公一, 堤成一郎, 岡安崇史, 斎藤公志郎, 杉本昌也

    農業機械学会年次大会講演要旨  2000.4  農業食料工学会

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  • 弾塑性学入門者を対象としたインターネット教材の開発 JavaによるインタラクティブWebコンテンツの開発

    岡安崇史, 橋口公一, 堤成一郎, 岩永真由美, 永島玲子

    農業機械学会年次大会講演要旨  2000.4  農業食料工学会

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  • Precise measurement of soil deformation and fluctuation in drawbar pull for steel and rubber-coated rigid wheels

    T Shikanai, K Hashiguchi, Y Nohse, M Ueno, T Okayasu

    JOURNAL OF TERRAMECHANICS  2000.1  PERGAMON-ELSEVIER SCIENCE LTD

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    Event date: 2000.1

    Language:English  

    The travelling performance of rigid wheels on sand stratum is measured using two kinds of surface material, i.e. steel and steel coated with rubber. A new method for measuring the displacement of soil beneath the wheel has been developed using small polyester him markers. The trajectories of soil particles beneath the wheels are approximated by an exponential function and the fluctuations in the drawbar pull are represented by a sinusoidal function. The amplitude and basic wavelength of the fluctuation in the drawbar pull are discussed for both types of wheels. (C) 2000 ISTVS. All rights reserved.

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  • Analysis of soil deformation beneath a wheel in the repetition travel

    Fukami, K, Ueno, M, Hashiguchi, K, Okayasu, T

    Proc. CIGR2000  2000 

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  • Shear band analysis in soils by elastoplastic constitutive equation with tangential stress rate effect

    Hashiguchi, K, Tsutsumi, S, Okayasu, T, Saitoh, K

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications  2000 

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  • Fluctuation of the drawbar pull of a wheel due to the inhomogeneous soil deformation

    K Fukami, M Ueno, K Hashiguchi, T Okayasu

    PROCEEDINGS OF THE INTERNATIONAL AGRICULTURAL ENGINEERING CONFERENCE  2000  ASIAN INST TECHNOLOGY

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    Event date: 2000

    Language:English  

    Drawbar pull of a traveling wheel varies with certain amplitude in the stationary state, even though the speed of it is so slow that the inertia force is negligible. Averaged values of the mechanical quantities are used as characteristic values of traveling performance, and such fluctuation is usually neglected. The properties of fluctuation had been mechanically examined by authors in the previous studies. The purpose of this study was to clarify the cause of it from a view point of soil deformation under the wheel. A close relation between the settlement and the drawbar pull was made clear by using waveform analysis. Volumetric strain and shear strain remained after traveling showed similar distribution patterns, which meant that the remarkable dilatancy occurred. Negative correlation was observed between the positive shear strain increment and the drawbar pull increment. In addition, frequency components of it and the positive shear strain increment agreed with very well. The increase and decrease of positive shear strain which was the uneven soil deformation caused the fluctuation of the drawbar pull.

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  • Deformation behavior of shallow foundation beneath footing subjected to cyclic load

    Okayasu, T, Hashiguchi, K, Tsutsumi, S

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications)  2000 

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  • Comparison of Drucker-Prager’s and subloading surface models for prediction of soil deformation behavior

    Hashiguchi K, Saitoh K, Okayasu T, Tsutsumi S

    Proc. Int. Symp. Plasticity 2000 (Proc. Eighth Int. Symp. Plasticity and Its Current Applications)  2000 

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  • The soil‐water coupled finite element analysis with the extended subloading surface model.

    橋口公一, 岡安崇史, 堤成一郎

    地盤工学研究発表会発表講演集  1999.6 

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  • Inelastic Constitutive Equation with Tangential Stress Rate Effect.

    橋口公一, 堤成一郎, 岡安崇史

    地盤工学研究発表会発表講演集  1999.6 

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  • 剛性車輪のけん引力などの変動と土の変形に関する解析

    上野正実, 深見公一郎, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  1999.4 

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    Language:Japanese  

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  • 繰返し転圧を受ける耕盤圃場の土壌固結防止に関する研究 車輪のすべりと土壌間隙比などの効果

    橋口公一, 岡安崇史, 上野正実, 深見公一郎

    農業機械学会年次大会講演要旨  1999.4 

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    Event date: 1999.4

    Language:Japanese  

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  • 繰返し負荷を受ける地盤の土‐水連成有限変形解析

    橋口公一, 岡安崇史, 川崎若, 堤成一郎

    農業機械学会年次大会講演要旨  1999.4  農業食料工学会

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    Language:Japanese  

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  • 接線応力速度効果を持つ下負荷面モデルの提案 土のせん断変形解析への適用

    橋口公一, 堤成一郎, 岡安崇史

    農業機械学会年次大会講演要旨  1999.4  農業食料工学会

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    Language:Japanese  

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  • Time-dependent constitutive equation of soil

    Hashiguchi, K, Wu, X, Okayasu, T

    Proc. Int. Symp. Plasticity '99 (Proc. 7th Int. Symp. Plasticity &amp; its Current Appl.  1999 

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    Event date: 1999

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  • Soil deformation simulation by water - soil linkage elasto-plasticity FEM.

    橋口公一, 岡安崇史, 友山隆広, 堤成一郎, 上野正実, 鹿内健志

    農業機械学会年次大会講演要旨  1998.4  農業食料工学会

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    Event date: 1998.4

    Language:Japanese  

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  • Waveform analysis of fluctuation in tractive force of wheels.

    上野正実, 鹿内健志, 深見公一郎, 大嶺政朗, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  1998.4 

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  • Research on high-precision prediction of runnability of rigid wheels in sandy ground.

    上野正実, 鹿内健志, 大嶺政朗, 深見公一郎, 橋口公一, 岡安崇史

    農業機械学会年次大会講演要旨  1998.4 

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  • Precise prediction of the traveling performance for a rigid wheel

    Ueno, M, Oomine, M, Shikanai, T, Hashiguchi, K, Okayasu, T

    Proc. 5th Asia-Pacific Reg. Conf. Terrain Vechicle Systems  1998 

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    Event date: 1998

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  • Waveform analysis of drawbarpull of a rigid wheel by FFT

    Ueno, M, Fukami, K, Shikanai, T, Hashiguchi, K, Okayasu, T

    Proc. 5th Asia-Pacific Reg. Conf. Terrain Vechicle Systems  1998 

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  • Soil deformation beneath a rigid wheel

    Ueno, M, Shikanai, T, Okayasu, T, Hashiguchi, K, Nohse, Y, Gotoh, M, Uchiyama, K

    Proc. 4th Asia-Pacific Regional Conf. Terrain Vechicle Systems  1995 

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    Event date: 1995

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  • Walking motion of the soil reaction on a whee

    Ueno, M, Shikanai, T, Okayasu, T, Hashiguchi, K, Nohse, Y, Gotoh, M, Uchiyama, K

    Proc. 4th Asia-Pacific Regional Conf. Terrain Vechicle Systems  1995 

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    Event date: 1995

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  • Accuracy of rice straw weight and rough grain yield predicted by a modified crop growth model based on sucros1

    Iwasaka, S., Hirai, Y., Yamakawa, T., Inoue, E., Okayasu, T., Mitsuoka, M.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Venue:Niigata  

  • Investigation of the mechanical threshing characteristics of sorghum

    Momanyi J. Simanto, M. J., Mitsuoka, M., Inoue, E., Okayasu, T., Hirai, Y.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Venue:Niigata  

  • 農業機械騒音低減のためのANCシステムの構築

    日野翔太, 堀江亮汰, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    第75回農業食料工学会年次大会  2016.5 

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    Venue:京都  

  • コンバイン走行時に撮影したイネの刈り株画像を用いた穂数計測法

    平井康丸, 成田圭佑, 境淳成, 稲葉繁樹, 井上英二, 岡安崇史, 光岡宗司

    第75回農業食料工学会年次大会  2016.5 

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    Venue:京都  

  • 暖地輪作体系における乾田直播圃場の透水性制御技術に関する研究-振動ローラ鎮圧が水稲の生育・収量に及ぼす影響の解明-

    深見公一郎, 中野恵子, 椋木俊文, 稲葉敏樹, 松尾直樹, 土屋史紀, 佐々木豊, 岡安崇史

    第75回農業食料工学会年次大会  2016.5 

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    Venue:京都  

  • 受動騒音制御による農業機械の騒音低減に関する研究

    堀江亮汰, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    第75回農業食料工学会年次大会  2016.5 

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    Venue:京都  

  • Investigation of Tire Air Pressure of Tractor with Tire Pressure Monitoring System

    Soyoung SHIN, Eiji INOUE, Muneshi MITSUOKA, Takashi OKAYASU, Yasumaru HIRAI

    第70回農業食料工学会九州支部例会  2016.9 

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    Venue:福岡  

  • 脱穀現象の三次元個別要素解析

    今浜洋樹,井上英二,光岡宗司,岡安崇史,平井康丸

    第70回農業食料工学会九州支部例会  2016.9 

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    Venue:福岡  

  • コンバインによる収穫物データ収集の方向性

    平井康丸,岩坂宗一郎,井上英二,岡安崇史,光岡宗司

    第70回農業食料工学会九州支部例会  2016.9 

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    Venue:福岡  

  • 転輪-農用ゴム覆帯間の力学的作用の個別要素法解析

    安藤真基,井上英二,光岡宗司,岡安崇史,平井康丸

    第70回農業食料工学会九州支部例会  2016.9 

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    Venue:福岡  

  • DEMによる揺動選別部の最適設計要素パラメータの検討

    池田康佑,井上英二,岡安崇史,平井康丸,光岡宗司,廣松大樹

    第76回農業食料工学会年次大会  2017.9 

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    Venue:東京  

  • 計測データセットの相関グラフ学習による農業機械の異常検出に関する研究

    光岡宗司,高田康平,井上英二,岡安崇史,平井康丸

    第76回農業食料工学会年次大会  2017.9 

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    Venue:東京  

  • Terrain Reconstruction Using Stereo Vision Camera forTractor Rollover Estimation

    SHIN SOYOUNG,光岡宗司,井上英二,岡安崇史,平井康丸

    第76回農業食料工学会年次大会  2017.9 

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    Venue:東京  

  • コンバインの移動軌跡に基づく集荷穀物に対応した収穫面積の自動計算手法

    平井康丸,緒方聖大,井上英二,岡安崇史,光岡宗司,鹿内健志

    第76回農業食料工学会年次大会  2017.9 

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    Venue:東京  

  • 水稲籾のかさ密度と登熟の関係

    吉嵜隆一,平井康丸,井上英二,岡安崇史,光岡宗司,鹿内健志

    第76回農業食料工学会年次大会  2017.9 

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    Venue:東京  

  • 農業機械の振動時系列データを用いた密度比推定による変化検知

    光岡宗司, 井上英二, 岡安崇史, 平井康丸

    農業環境工学関連学会2018年合同大会  2018.9 

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    Venue:Ehime  

  • 籾の堆積状態がグレンタンクの支持荷重および籾質量の推定精度に及ぼす影響

    平井康丸, 古川大二郎, 吉嵜隆一, 樫野雅和, 上加郁朗, 光岡宗司, 井上英二, 岡安崇史

    農業環境工学関連学会2018年合同大会  2018.9 

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    Venue:Ehime  

  • グレンタンクに堆積した籾の空隙率と底面圧力の関係

    吉嵜隆一, 平井康丸, 上加郁朗, 古川大二郎, 樫野雅和, 光岡宗司, 稲垣紫緒, 井上英二, 岡安 崇史

    農業環境工学関連学会2018年合同大会  2018.9 

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    Venue:Ehime  

  • 3-Dimensional Reconstruction of Traveling Terrain and Prediction of Rollover Risk of Agricultural Machinery

    SHINSOYOUNG, 井上英二, 光岡宗司, 岡安崇史, 平井康丸

    農業環境工学関連学会2018年合同大会  2018.9 

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    Venue:Ehime  

  • Development of Plant Monitoring using Pan Tilt Zoom Camera for Smart Agriculture and Verification of Its Validity

    Pham Thanh Dong, Takashi Okayasu, Daisuke Yasutake, Yasumaru Hirai,Takenori Ozaki, Masaharu Koga, Kota Hidaka

    Annual meeting of Japanese Society of Agricultural Informatics 2023  2023.5 

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    Venue:福岡市  

  • Accuracy evaluation of a method to compute the area of combine-harvested field sections

    Ogata, M., Hirai, Y., Nakanishi, T., Shikanai, T., Inoue, E., Okayasu, T., Mitsuoka, M.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Venue:Niigata  

  • 恒温植物ハスの熱発生メカニズムに関する温度変動の実験的考察

    後藤薫平, 福島崇志, 井上英二, 石丸有香, 岡安崇史

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • セミクローラ式トラクタ走行部の転動抵抗を考慮した振動モデル

    福島崇志, 井上英二, 光岡宗司, 岡安崇史,

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • 稲葉繁樹,転輪と農用ゴム履帯との非線形作用特性

    宮本亮, 光岡宗司, 井上英二, 福島崇志, 岡安崇史

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • 穀粒群を通過する選別風の圧力損失特性

    古野裕子, 松井正実, 井上英二, 森健, 岡安崇史, 深田龍介

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • 穀粒群の流下拡散現象に関する研究

    古野裕子, ,松井正実, 井上英二, 森健, 岡安崇史, 深田龍介

    農業環境工学関連学会2006年合同大会  2006.9 

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    Venue:Sapporo  

  • 発熱植物ハスの発熱制御に関する研究

    石丸有香,福島崇志,光岡宗司,井上英二,岡安崇史,和田小百合

    農業機械学会九州支部  2007.8 

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    Venue:Kagoshima  

  • 穀粒群が受ける抗力に関する研究

    古野裕子,松井正実,井上英二,森健,岡安崇史,深田龍介

    農業機械学会九州支部  2007.8 

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    Venue:Kagoshima  

  • セミクローラ式トラクタの振動特性に関する研究

    奥田康隆,福島崇志,光岡宗司,井上英二,岡安崇史,松本和起

    農業機械学会九州支部  2007.8 

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    Venue:Kagoshima  

  • 発熱植物ハスの発熱制御に関する実験的考察

    福島崇志,井上英二,光岡宗司,後藤薫平,石丸有香,岡安崇史

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • 選別風を受ける籾群・藁群の飛行特性

    古野裕子,松井正実,井上英二,森 健,岡安崇史,深田龍介

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • 履帯構造上有する張力変動を考慮した農用ゴム履帯車両の振動特性の解明

    光岡宗司,井上英二,福島崇志,宮本 亮,大倉典雄,岡安崇史

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • 一定風速条件下における穀粒群の飛散シミュレーション

    古野裕子,深田龍介,松井正実,井上英二,岡安崇史,森 健

    農業環境工学関連学会2007年合同大会  2007.9 

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    Venue:Tokyo  

  • INVESTIGATION OF VIBRATION CHARACTERISTICS OF AGRICULTURAL RUBBER CRAWLER VEHICLES International conference

    Muneshi Mitsuoka, Eiji INOUE*, Takashi Fukushima, Takashi Okayasu, Noiro Okura

    Int. S. Agr. Struct. Agr. Engng. 2007  2007.12 

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    Venue:Taipei   Country:Taiwan, Province of China  

  • INVESTIGATION OF THE VIBRATION CHARACTERISTIC OF THE HALF TRACKED TRACTOR International conference

    Muneshi Mitsuoka, Eiji Inoue, Takashi Fukushima, Takashi Okayasu

    Int. WS Agri. Biosy. Engng.  2007.12 

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    Venue:Ho Chi Minh   Country:Viet Nam  

  • 農用ゴム履帯車両の振動加速度のカオス時系列解析

    大倉典雄,光岡宗司,井上英二,岡安崇史,福島崇志

    第67回農業機械学会年次大会  2008.3 

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    Venue:Miyazaki  

  • セミクローラ式トラクタの非線形振動に関する研究

    松本和起,井上英二,光岡宗司,岡安崇史,福島崇志,奥田康隆

    第67回農業機械学会年次大会  2008.3 

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    Venue:Miyazaki  

  • k-εモデルを導入した選別風の数値流体解析

    古野裕子,井上英二,森 健,岡安崇史,松浦大海,松井正実

    第67回農業機械学会年次大会  2008.3 

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    Venue:Miyazaki  

  • 藁群の終末速度および選別風との相互作用に関する研究

    古野裕子,井上英二,森 健,岡安崇史,松井正実,松浦大海

    第67回農業機械学会年次大会  2008.3 

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    Venue:Miyazaki  

  • 衝撃式脱穀装置における作物物性と脱粒の関係についての統計的解析

    土師 健,井上英二,光岡宗司,岡安崇史,今村英一,上加郁郎,松浦大海

    第67回農業機械学会年次大会  2008.3 

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    Venue:Miyazaki  

  • INVESTIGATION OF NONLINEAR VIBRATION CHARACTERISTICS OF AGRICULTURAL RUBBER CRAWLER VEHICLES International conference

    Eiji INOUE, Muneshi MITSUOKA, Norio OKURA, Takashi FUKUSHIMA, Takashi OKAYASU

    4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2008.5 

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    Venue:Taichung   Country:Taiwan, Province of China  

  • INVESTIGATION OF NONLINEAR VIBRATION CHARACTERISTICS OF THE HALF TRACKED TRACTOR International conference

    Muneshi MITSUOKA, Yasutaka OKUDA, Kazuki MATSUMOTO, Takashi FUKUSHIMA, Takashi OKAYASU, Eiji INOUE

    4th Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB)  2008.5 

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    Venue:Taichung   Country:Taiwan, Province of China  

  • 衝撃式脱穀装置における作物物性と脱粒性との関係について

    土師 健,井上英二,光岡宗司,岡安崇史,今村英一,上加郁郎

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • 一定風速条件下における藁の飛行シミュレーション

    松浦大海,古野裕子,深田龍介,松井正実,井上英二,岡安崇史

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • モデル車両を用いたセミクローラ式トラクタの牽引特性に関する基礎的研究

    畑崎達哉,光岡宗司,井上英二,岡安崇史

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • セミクローラ式トラクタの履帯走行部転輪荷重特性の実験的考察

    武岡 達,光岡宗司,井上英二,岡安崇史

    第63回農業機械学会九州支部例会  2008.8 

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    Venue:Kumamoto  

  • 農用ゴム履帯車両の非線形振動解析

    大倉典雄,光岡宗司,井上英二,岡安崇史

    第63回農業機械学会九州支部例会  2008.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Kumamoto  

  • 一定風速条件下における籾と藁の飛散シミュレーション

    松浦大海,井上英二,光岡宗司,岡安崇史,上加裕子

    第64回農業機械学会九州支部  2009.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Saga  

  • 流体力学理論による粒子間,粒子-気流間の相互作用の解明

    上加裕子,松井正実,井上英二,森健,岡安崇史

    農業環境工学関連学会2009年合同大会  2009.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • セミクローラ式トラクタの振動特性の3次元予測モデルの構築

    辻本 規,光岡宗司,井上英二,福島崇志,岡安崇史

    農業環境工学関連学会2009年合同大会  2009.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • セミクローラ式トラクタの牽引特性に関する基礎的研究

    武岡 達,光岡宗司,井上英二,畑崎達哉,岡安崇史

    農業環境工学関連学会2009年合同大会  2009.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo  

  • Three Dimension Model of Vibration Characteristics of the Half-tracked Tractor International conference

    Mitsuoka, M., Tsuzimoto, T., Ashik, R.M., Inoue , E., Fukushima, T., Okayasu, T.

    ISMAB2010  2010.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Investigation of Chilling Sensitivity and Effect of Instant Water Soaking Treatment on the Quality of Amaranth Leaves International conference

    Nakano, K., Takahashi, C., Oba, S., Shimazu, T., Okayasu, T.

    ISMAB2010  2010.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Fluid Analysis of Cleaning Wind in Combine Harvester International conference

    Ueka, Y., Matsui, M., Inoue, E., Mori, K., Okayasu, T.

    ISMAB2010  2010.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Study on Durability Improvement of the Shallow Tillage Seeding Machine with Cutting Small Ditches - Measurement of an acting force on the bearing part of the side disk to cut small ditch International conference

    Fukami, K. Watanabe, T., Sasaki, Y., Tanio, M., Tsutiya, S., Tasaka, K., Okayasu, T., Inoue, E., Ohba, H., Kamitsuzi, N.

    ISMAB2010  2010.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • Dynamic Model of Half-Tracked Tractor Considering the Nonlinear Voigt Model International conference

    Ashik, R.M., Mitsuoka, M., Takeoka, S., Inoue, E., Fukushima, T., Okayasu T.

    ISMAB2010  2010.4 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka  

  • MEMSセンサーを用いた自脱コンバインの稼働状況の把握

    森田岳,永翁和明,光岡宗司,井上英二,岡安崇史

    第66回農業機械学会九州支部  2011.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Naha  

  • 自脱コンバインにおける2番分配率の穀粒損失に与える影響

    加賀龍哉,松井正実,光岡宗司,井上英二,岡安崇史,上加裕子

    第66回農業機械学会九州支部  2011.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Naha  

  • MEMSセンサを用いたトラクタの傾斜角の検出

    光岡宗司,井上英二,岡安崇史,坂口 希,辻本規

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • MEMSセンサーを用いた農業機械の稼働状況の把握に関する研究

    永翁和明,森田 岳,光岡宗司,井上英二,岡安崇史,穴井孝幸

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • 風選別部における3次元流体解析について

    片山隆司,溝口寛子,光岡宗司,井上英二,岡安崇史,上加裕子,松井正実

    第70回農業機械学会年次大会  2011.9 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hirosaki  

  • Approach to Local Enviroment Control for Stable Production of Stawberry International conference

    Miyoshi, Y., Hidaka, K., Okayasu, T., Hirano, O., Yasutake, D., Kitano, M.

    IFAC2013 Bio Robotics Conf.  2013.3 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Osaka   Country:Japan  

  • Correlation anomaly detection by using time series data of agricultural machinery

    Mitsuoka, M., Takata, K., Inoue, E., Okayasu, T., Hirai, Y.

    8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Niigata  

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MISC

  • これからのフェノタイピング Reviewed

    岡安崇史

    植物環境工学   2024.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 交通地盤工学に関する基礎講座「第7章 鉄道軌道の設計施工・維持管理」 Reviewed

    桃谷尚嗣,中村貴久,川崎祐征,早野公敏,岡安崇史,石川達也

    地盤工学会誌   2021.3

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • センサ・画像情報を用いたイチゴの栽培環境計測と生育評価

    岡安崇史・田中泰洋・政井隆之

    電気評論、電気評論社   2018.11

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • はじめてのラズパイ植物センシング

    岡安崇史・堀本正文

    CQ出版   2018.10

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 農業・植物フェノタイピング研究における映像技術の利用

    岡安崇史

    映像情報メディア学会誌, 査読無   2018.3

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 露地栽培作物の生育評価のためのドローンの利用

    岡安 崇史, 深見公一郎, 長谷川克也

    農業食料工学会誌   2016.3

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • スマート農業と二つのSNS

    岡安崇史・有田大作

    電気計算   2015.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 中小農家も使える圃場環境モニタリング装置

    岡安崇史・有田大作

    ニューカントリー   2015.2

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 農業に活用できるICT

    岡安 崇史, 有田 大作

    全農 福岡県本部   2013.10

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 2つのSNSが切り拓く新たな農業の展開

    岡安 崇史, 有田 大作

    産学官連携ジャーナル・科学技術振興機構   2013.9

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • Informatization Agriculture in Japan

    Takashi OKAYASU

    Proceedings of the International Symposium on Agricultural and Biosystem Engineering (ISABE) 2013   2013.8

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    Agriculture is dependent on climate, weather, soil conditions, and crop types. Therefore, farmers have tried to develop and improve their own cultivation techniques and senses during the long-term experiences so as to fit the peripheral field environment. Information Communication Technology (ICT) is currently applied in several fields of agriculture to improve the agricultural productivity and cultivation skills. There are many kinds of ICT-agriculture applications that already used for supporting the agricultural production such as environmental monitoring, precision agriculture including spatial data collection, precision irrigation and supplying data to farmers, facility automation including greenhouse control and animal-feeding facility (Wang, 2006).
    On the other hand, authors have tried to develop the informatization agricultural supporting system called “Agri-eye” to optimize the agricultural production system (Okayasu et al., 2010). This system is composed of field environmental monitoring and acquisition, crop growth diagnosis and quality evaluation, work history recording, data analysis and visualization, and communication tools, and so on. The field environmental monitoring devices above 50 have been installed in the fields above 10 mainly in the Fukuoka and the Oita prefectures. The work recording system has been also distributed over the Internet and can be utilized through the web browsers on personal computers, mobile phones, and smartphones. The validity of the systems has been verified by the feasibility studies up to present.
    In this article, several application examples of the informatization agriculture in Japan will be introduced here.

  • 地盤材料の構成モデル最前線 4. 地盤材料の密度や繰返し載荷を考えたモデル化

    岡安崇史

    地盤工学会誌   2011.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • H19年度現代的教育ニーズ取組支援プログラム 「地域環境・農業活用による大学教育の活性化-ネットワーク型農学校が大学と地域社会の未来像を創造する-」

    中司 敬,原田昌佳,岡安崇史,佐藤剛史,丸居 篤,吉木美恵子

    九州大学   2010.3

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    Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  • 大都市周辺生態圏・河川領域における環境科学研究創成のための次世代研究者ネットワークの構築

    岡安崇史

    2007.10

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    Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

    Other Link: http://www.agr.kyushu-u.ac.jp/

  • 圃場環境情報モニタリングシステムの開発とその営農利用への試み

    岡安崇史,西出寿也,中司 敬,井上英二

    Bio九州   2006.10

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 粒状体の現象論的力学モデルとその農業機械分野への応用

    岡安崇史

    農業機械学会誌   2006.7

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 穀物層流動等を理論的に解明

    岡安崇史

    農機新聞   2006.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • Examining Load on the Top Plate of a Combine for Multi-crops during the Harvesting of Feed Corns through Rosette Analysis and DEM

    大塚望実, 平井康丸, 岡安崇史, 深見公一郎, 高橋仁康

    農業食料工学会誌   85 ( 6 )   2023   ISSN:2188-224X

  • Examining load on the top plate of a combine for multi-crops during the harvesting of feed corns through rosette analysis and DEM-FEM coupled analysis

    大塚望実, 平井康丸, 岡安崇史, 深見公一郎, 高橋仁康

    農業環境工学関連学会合同大会講演要旨集(CD-ROM)   2023   2023   ISSN:1880-2087

  • データ駆動型農業のための植物フェノタイピング技術について

    岡安崇史, 岡山毅, 平良英三, 福島崇志, 梅田大樹

    農業食料工学会年次大会講演要旨   80th (CD-ROM)   2022   ISSN:2188-2584

  • NFT水耕栽培における根群の成長モニタリングシステム-地上部も含めた統合評価に向けて-

    安武大輔, 安武大輔, 北内拓樹, 野村浩一, 北野雅治, 岡安崇史, 岡安崇史, 尾崎行生, 広田知良

    日本生物環境工学会大会講演要旨   2022   2022

  • Internet of Plants(IoP)の共創(1)IoPの概念と目指す姿

    北野雅治, 岩尾忠重, 山崎富弘, 齊藤雅彦, 但田育直, 野村浩一, 安武大輔, 岡安崇史

    日本農業気象学会全国大会講演要旨/Proceedings of International Symposium on Agricultural Meteorology   2022 (CD-ROM)   2022

  • 九州各地区の独自の活動

    岡安崇史

    地盤工学会   2010.6

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    Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

    Divisional Activities in Kyushu Branch

  • 伊都キャンパス農学研究院分室を拠点とした糸島地域の持続的農業のための効率的水資源利用技術の研究展開

    平松和昭,神野健二,広城吉成,横田雅紀,望月俊宏,中野 豊,吉越 恆,小松 光,弓削こずえ,丸居 篤,森 牧人,原田昌佳,岡安崇史

    2008.5

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    Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

    Other Link: http://www-water.bpes.kyushu-u.ac.jp/ito/

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Works

  • グループウェア連動型ホームページ管理システム

    岡安崇史

    2021.4

  • グループウェア連動型イベント管理システム

    岡安崇史

    2020.6

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  • グループウェア連動型ジャーナル投稿等管理システム

    岡安崇史

    2020.2

  • 低コスト植物フェノタイピングプラットフォーム

    岡安崇史・伊藤次郎

    2018.10

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    Low-cost Plant Phenotyping Platform

    Other Link: https://www-ampsd.bpes.kyushu-u.ac.jp/?Page=Researches

  • 簡易グループウェア

    岡安崇史

    2017.4

  • ハウス内簡易環境制御システム

    岡安崇史

    2016.4

  • 農作業履歴記録システム

    岡安崇史

    2015.4

  • 情報化農業支援システム(アクトいちごファーム)

    岡安崇史

    2010.10

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    農地環境情報と農作業履歴を収集・分析できるデータベースシステム(研究・開発中)

  • 情報化農業支援システム(糸島農業)

    岡安崇史

    2010.10

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    農地環境情報と農作業履歴を収集・分析できるデータベースシステム(研究・開発中)

  • Web書籍オンライン執筆支援ツール

    岡安崇史

    2009.8

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    本ツールは,Web上で教材・書籍を共同執筆するための支援ツールで,大学等で利用する教材や専門書等の作成・出版に活用できる.

  • 出版物管理データベース

    岡安崇史

    2009.8

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    Web上で書籍の管理ができるデータベースプログラム.

  • 営農支援システム(Agri-eye)

    岡安崇史

    2009.3

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    営農支援のためのデータベースシステムとして開発を進めている.現在は,圃場環境情報の提供を行っている.

  • 下負荷面モデルに基づく土の弾塑性計算プログラム

    岡安崇史

    2009.3

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    本プログラムは,排水・非排水三軸条件,平面ひずみ条件,さらには,任意の負荷条件(アドバンスドモード)に対して,本節で説明した「下負荷面モデル」の予測性能を評価することが可能である.計算は,応力の初期値および材料定数を設定後,負荷・水理・拘束条件をそれぞれ設定し,「計算開始」ボタンをマウスでクリックすることによって行うことが可能である.

  • 簡易農地モニタリングシステム

    岡安崇史,山邉信利(JA粕屋),羽田野梨絵,平田真理

    2007.4

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    本システムは,農地に設置された簡易気象観測装置により計測された気象観測データをインターネットを介して収集・蓄積し,独自開発のWebデータベースシステムにより情報公開することが可能である.

    Other Link: http://bpel08.bpes.kyushu-u.ac.jp/fs_graph/index_itoshimagp.htm

  • 下負荷面モデルに基づく弾塑性有限要素解析パッケージ(地盤工学会九州支部講習会版)

    岡安崇史

    2005.9

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    下負荷面モデルに基づく弾塑性有限要素解析を行うための入門パッケージ(ソースコード,解析用サンプルデータ,簡易プレ/ポストプログラム,土の簡易要素試験シミュレータなど)

  • Visual Basic入門

    岡安崇史

    2000.1

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    Visual Basic Programming for Beginners on the Web (in Japanese)

  • 弾塑性学のためのインターネット教材

    岡安崇史,橋口公一,岩永真由美,永島玲子,小柳誠文

    2000.1

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    Internet Teaching Material on the Elastoplasticity (in Japanese)

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Professional Memberships

  • Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

    2022.1 - Present

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  • The Japanese Society of Agricultural Machinery and Food Engineers

    1996.4 - Present

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  • International Society for Terrain-Vehicle Systems

  • Japanese Society of Terramechanics

  • The Japanese Society of Kyushu Agricultural Machinery and Food Engineers

  • Japanese Geotechnical Society

  • Information Processing Society of Japan

  • Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

  • Japan Forest Engineering Society

  • The Society of Instrument and Control Engineers

  • Japanese Society of Agricultural Informatics

  • The Japanese Society of Agricultural Machinery and Food Engineers

  • 農業情報学会

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  • 地盤工学会

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Committee Memberships

  • 九州農業食料工学会   Organizer   Domestic

    2023.4 - 2025.3   

  • 農業食料工学会   Executive   Domestic

    2023.4 - 2025.3   

  • 農業情報学会   Vice-chairman   Domestic

    2023.4 - 2025.3   

  • 農業情報学会   Councilor   Domestic

    2023.4 - 2025.3   

  • 農業情報学会   Executive   Domestic

    2023.4 - 2025.3   

  • 農業情報学会   情報工学部会・部会長   Domestic

    2023.4 - 2025.3   

  • 農業食料工学会   国際委員会委員長   Domestic

    2023.4 - 2025.3   

  • 農業食料工学会   代議員   Domestic

    2023.4 - 2025.3   

  • 農業情報学会   国際委員会委員長   Domestic

    2023.4 - 2025.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2023.4 - 2024.3   

  • 地盤工学会九州支部   広報委員会委員   Domestic

    2023.4 - 2024.3   

  • 農業情報学会   Councilor   Domestic

    2021.4 - 2023.3   

  • 農業情報学会   Vice-chairman   Domestic

    2021.4 - 2023.3   

  • 農業食料工学会   Executive   Domestic

    2021.4 - 2023.3   

  • 九州農業食料工学会   Organizer   Domestic

    2021.4 - 2023.3   

  • 農業情報学会   Executive   Domestic

    2021.4 - 2023.3   

  • 九州農業食料工学会   人材育成委広報・情報委員長員会委員長   Domestic

    2021.4 - 2023.3   

  • 農業情報学会   情報工学部会・部会長   Domestic

    2021.4 - 2023.3   

  • 農業情報学会   国際委員会委員長   Domestic

    2021.4 - 2023.3   

  • 農業食料工学会   代議員   Domestic

    2021.4 - 2023.3   

  • 農業食料工学会   国際委員会委員長   Domestic

    2021.4 - 2023.3   

  • 九州農業食料工学会   人材育成委員会委員長   Domestic

    2021.4 - 2023.3   

  • 九州農業食料工学会   人材育成委員会委員長   Domestic

    2021.4 - 2023.3   

  • 九州農業食料工学会   人材育成委員会委員長   Domestic

    2021.4 - 2023.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2021.4 - 2022.3   

  • 地盤工学会九州支部   広報委員会委員   Domestic

    2021.4 - 2022.3   

  • 農業情報学会   Executive   Domestic

    2019.4 - 2021.3   

  • 九州農業食料工学会   Organizer   Domestic

    2019.4 - 2021.3   

  • 農業食料工学会   Councilor   Domestic

    2019.4 - 2021.3   

  • 農業情報学会   Councilor   Domestic

    2019.4 - 2021.3   

  • 農業情報学会   情報工学部会・副部会長   Domestic

    2019.4 - 2021.3   

  • 九州農業食料工学会   人材育成委員会委員長   Domestic

    2019.4 - 2021.3   

  • 農業食料工学会   国際委員会副委員長   Domestic

    2019.4 - 2021.3   

  • 農業食料工学会   IT・メカトロニクス部会幹事   Domestic

    2019.4 - 2021.3   

  • 農業情報学会   総務委員会員   Domestic

    2019.4 - 2021.3   

  • 農業情報学会   国際委員会委員長   Domestic

    2019.4 - 2021.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2019.4 - 2020.3   

  • 地盤工学会九州支部   70周年記念実行委員会委員   Domestic

    2019.4 - 2020.3   

  • 地盤工学会   TC202国内委員会委員   Domestic

    2019.4 - 2020.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2018.4 - 2019.3   

  • 農業情報学会   記念誌出版委員会   Domestic

    2018.4 - 2019.3   

  • 農業食料工学会   Organizer   Domestic

    2017.4 - 2019.3   

  • 農業食料工学会九州支部   Organizer   Domestic

    2017.4 - 2019.3   

  • 農業情報学会   Executive   Domestic

    2017.4 - 2019.3   

  • 農業情報学会   Councilor   Domestic

    2017.4 - 2019.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2017.4 - 2019.3   

  • 農業食料工学会九州支部   IT・メカトロニクス部会担当  

    2017.4 - 2019.3   

  • 農業食料工学会九州支部   人材育成委員会委員長   Domestic

    2017.4 - 2019.3   

  • 農業情報学会   Executive   Domestic

    2015.4 - 2017.3   

  • 農業情報学会   Executive   Domestic

    2015.4 - 2017.3   

  • 農業情報学会   Councilor   Domestic

    2015.4 - 2017.3   

  • 農業食料工学会九州支部   庶務  

    2015.4 - 2017.3   

  • 農業食料工学会   IT・メカトロニクス部会委員  

    2015.4 - 2017.3   

  • 農業機械学会   Councilor   Domestic

    2013.4 - 2015.3   

  • 農業食料工学会九州支部   Organizer  

    2013.4 - 2015.3   

  • 農業情報学会   Councilor   Domestic

    2013.4 - 2015.3   

  • 農業情報学会   Councilor   Domestic

    2013.4 - 2015.3   

  • 農業機械学会   情報委員会   Domestic

    2013.4 - 2015.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2013.4 - 2014.3   

  • 地盤工学会九州支部   国際委員会委員   Domestic

    2013.4 - 2014.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2012.4 - 2013.3   

  • 農業情報学会   Councilor   Domestic

    2011.4 - 2013.3   

  • 農業機械学会   情報委員会   Domestic

    2011.4 - 2013.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2011.4 - 2012.3   

  • 地盤工学会   情報通信技術(ICT技術)の適用による地盤工学の高度化に関する研究委員会委員   Domestic

    2009.4 - 2012.3   

  • 農業情報学会   Councilor   Domestic

    2009.4 - 2011.3   

  • 農業情報学会   Councilor   Domestic

    2009.4 - 2011.3   

  • 農業機械学会九州支部   Organizer   Domestic

    2009.4 - 2011.3   

  • 農業情報学会   情報工学部会・副部会長   Domestic

    2009.4 - 2011.3   

  • 農業機械学会   出版委員会委員   Domestic

    2009.4 - 2011.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2009.4 - 2010.3   

  • 地盤工学会九州支部   広報委員会・副委員長・兼主査   Domestic

    2009.4 - 2010.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2008.4 - 2009.3   

  • 地盤工学会九州支部   広報委員会・副委員長・兼主査   Domestic

    2008.4 - 2009.3   

  • 土木学会応用力学委員会「離散体の力学」小委員会   委員   Domestic

    2008.4 - 2009.3   

  • 農業機械学会九州支部   Organizer   Domestic

    2007.4 - 2009.3   

  • 農業機械学会九州支部   常任幹事(編集担当)   Domestic

    2007.4 - 2009.3   

  • 農業機械学会   編集員会論文誌担当小委員会幹事長   Domestic

    2007.4 - 2009.3   

  • 農業情報学会   Councilor   Domestic

    2004.4 - 2009.3   

  • 地盤工学会九州支部   Organizer   Domestic

    2004.4 - 2008.3   

▼display all

Academic Activities

  • 現地開催実行委員長

    農業情報学会2023年大会  ( Fukuoka Japan ) 2023.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2023年大会  ( Fukuoka Japan ) 2023.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2023

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:8

    Number of peer-reviewed articles in Japanese journals:3

    Proceedings of International Conference Number of peer-reviewed papers:5

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 座長(Chairmanship) International contribution

    CIGR2022  ( Kyoto Japan ) 2022.12

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB) 2022  ( Kaohsiung Taiwan ) 2022.11

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第76回九州農業食料工学会例会  ( Online Japan ) 2022.10

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    第80回農業食料工学会年次大会  ( Online Japan ) 2022.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第80回農業食料工学会年次大会  ( Online Japan ) 2022.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2022年大会  ( Fukuoka Japan ) 2022.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2022

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:7

    Number of peer-reviewed articles in Japanese journals:4

    Proceedings of International Conference Number of peer-reviewed papers:1

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 年次大会・プログラム専門委員会委員

    第79回農業食料工学会年次大会  ( Online Japan ) 2021.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第79回農業食料工学会年次大会  ( Online Japan ) 2021.9

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    Type:Competition, symposium, etc. 

  • 農業食料工学会大会運営委員会委員

    第79回農業食料工学会年次大会  ( Online Japan ) 2021.9

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    Type:Competition, symposium, etc. 

  • 農業食料工学会大会実行委員会事務局長

    第79回農業食料工学会年次大会  ( Online Japan ) 2021.9

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    Type:Competition, symposium, etc. 

  • 主催者 International contribution

    1st Japan, Thailand and Indonesia Joint Seminar on Sustainable Agricultural Development Goals (SADGs) 2021  ( Online Japan ) 2021.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2021

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:7

    Number of peer-reviewed articles in Japanese journals:4

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 実行委員

    農業情報学会2019年秋季大会  ( Japan ) 2020.11

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • 座長(Chairmanship)

    農業情報学会2020年大会  ( Online Japan ) 2020.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2021年大会  ( Online Japan ) 2020.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2020

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:3

    Number of peer-reviewed articles in Japanese journals:5

    Proceedings of International Conference Number of peer-reviewed papers:3

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 座長(Chairmanship)

    農業情報学会2019年大会  ( Tokyo Japan ) 2019.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2019

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:6

    Number of peer-reviewed articles in Japanese journals:5

    Proceedings of International Conference Number of peer-reviewed papers:4

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:8

    Number of peer-reviewed articles in Japanese journals:8

    Proceedings of International Conference Number of peer-reviewed papers:2

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 農業情報研究

    2017.4 - 2021.3

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    Type:Academic society, research group, etc. 

  • 農業食料工学会

    2017.4 - 2019.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2017

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:8

    Number of peer-reviewed articles in Japanese journals:8

    Proceedings of International Conference Number of peer-reviewed papers:6

    Proceedings of domestic conference Number of peer-reviewed papers:1

  • 実行委員

    第70回農業食料工学会九州支部  ( Fukuoka Japan ) 2016.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Conference on State-of-the-Art Technology to Drive Agriculture Productivity in the Next Quarter of the Century  ( Tokyo Japan ) 2016.6

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第75回農業食料工学会年次大会  ( Kyoto Japan ) 2016.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB) 2016  ( Niigata Japan ) 2016.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2016

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:12

    Number of peer-reviewed articles in Japanese journals:6

    Proceedings of International Conference Number of peer-reviewed papers:10

    Proceedings of domestic conference Number of peer-reviewed papers:2

  • 実行委員 International contribution

    第15回国際地盤工学会アジア地域会議  ( Fukuoka Japan ) 2015.11

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業工学関連学会2015合同大会  ( Japan ) 2015.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2015年大会  ( Tokyo Japan ) 2015.5

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    Type:Competition, symposium, etc. 

  • 農業情報研究

    2015.4 - 2017.3

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    Type:Academic society, research group, etc. 

  • Engineering in Agriculture, Environment and Food International contribution

    2015.4 - 2017.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2015

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:10

    Number of peer-reviewed articles in Japanese journals:3

    Proceedings of International Conference Number of peer-reviewed papers:5

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 実行委員

    第68回農業食料工学会九州支部  ( Fukuoka Japan ) 2014.8 - 2014.9

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    Type:Competition, symposium, etc. 

  • 実行委員

    第49回地盤工学研究発表会  ( Kitakyushu Japan ) 2014.7

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    第73回農業食料工学会年次大会  ( Ginowan Japan ) 2014.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第73回農業食料工学会年次大会  ( Ginowan Japan ) 2014.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2014年大会  ( Tokyo Japan ) 2014.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2014

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:9

    Number of peer-reviewed articles in Japanese journals:2

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • オーガナイザー

    第72回農業食料工学会年次大会  ( Japan ) 2013.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    第72回農業食料工学会年次大会  ( Japan ) 2013.9

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    Type:Competition, symposium, etc. 

  • 農業情報研究

    2013.4 - 2015.3

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    Type:Academic society, research group, etc. 

  • Agribusiness and Information Management International contribution

    2013.4 - 2014.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2013

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:10

    Number of peer-reviewed articles in Japanese journals:5

    Proceedings of International Conference Number of peer-reviewed papers:5

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • オーガナイザー

    農業工学関連学会2012合同大会  ( Utsunomiya Japan ) 2012.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Int. Symp. Mach. Mech. Agr. Biosys. Engng. (ISMAB) 2016  ( Jeonju Korea ) 2012.6

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    Type:Competition, symposium, etc. 

  • 実行委員(広報・情報) International contribution

    Int. W. ICT in Geo-Engineering  ( Kyoto Japan ) 2012.5

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    Type:Competition, symposium, etc. 

    Number of participants:70

  • 実行委員 International contribution

    Int. W. ICT in Geo-Engineering  ( Kyoto Japan ) 2012.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Int. W. ICT in Geo-Engineering  ( Kyoto Japan ) 2012.5

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2012

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:23

    Number of peer-reviewed articles in Japanese journals:4

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 座長(Chairmanship)

    第70回農業機械学会年次大会  ( HIrosaki Japan ) 2011.9

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    第70回農業機械学会年次大会  ( HIrosaki Japan ) 2011.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業情報学会2011年大会  ( Tokyo Japan ) 2011.5

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    Type:Competition, symposium, etc. 

  • 農業情報研究

    2011.4 - 2013.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2011

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:25

    Number of peer-reviewed articles in Japanese journals:2

    Proceedings of International Conference Number of peer-reviewed papers:3

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • 座長(Chairmanship) International contribution

    9th Asia-Pacific Conference of the ISTVS  ( Sapporo Japan ) 2010.9

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    第69回農業機械学会年次大会  ( Japan ) 2010.9

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    Type:Competition, symposium, etc. 

  • Soils and Foundations International contribution

    2010.6 - 2014.3

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    Type:Academic society, research group, etc. 

  • 座長(Chairmanship)

    農業情報学会2010年大会  ( Tokyo Japan ) 2010.5

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    Type:Competition, symposium, etc. 

  • 実行委員(情報担当) International contribution

    The 5th International Symposium on Machinery and Mechatronics for Agricultural and Biosystems Engineering  ( Fukuoka Japan ) 2010.4

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2010

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:9

    Number of peer-reviewed articles in Japanese journals:5

  • 実行委員 International contribution

    International Joint Symposium on Geodisaster Prevention and Geoenvironment in Asia (JS-Fukuoka 2009)  ( Fukuoka Japan ) 2009.11

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    Type:Competition, symposium, etc. 

  • 自由集会司会

    農業工学関連学会2009合同大会  ( Tokyo Japan ) 2009.9

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    農業工学関連学会2009合同大会  ( Tokyo Japan ) 2009.9

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    Type:Competition, symposium, etc. 

  • Soils and Foundations International contribution

    2009.5 - 2011.3

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    Type:Academic society, research group, etc. 

  • 農業情報研究

    2009.4 - 2013.3

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2009

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:8

    Number of peer-reviewed articles in Japanese journals:6

    Proceedings of International Conference Number of peer-reviewed papers:4

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • コーディネーター

    第60回農業機械学会九州支部例会  ( Kumamoto Japan ) 2008.8

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    第67回農業機械学会年次大会  ( Miyazaki Japan ) 2008.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2008

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:11

    Number of peer-reviewed articles in Japanese journals:5

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

  • オーガナイザー

    農業工学関連学会2007合同大会  ( Tokyo Japan ) 2007.9

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    Type:Competition, symposium, etc. 

  • 農業機械学会九州支部誌

    2007.4 - 2009.3

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    Type:Academic society, research group, etc. 

  • 農業機械学会誌

    2007.4 - 2009.3

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    Type:Academic society, research group, etc. 

  • 実行委員

    産学官連携促進セミナー(九州バイオリサーチネット主催)  ( Fukuoka Japan ) 2007.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2007

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:9

    Number of peer-reviewed articles in Japanese journals:7

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:3

  • 実行委員

    第11回テクノフェスタ  ( Kyoto Japan ) 2006.11

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    Type:Competition, symposium, etc. 

  • 実行委員

    第60回農業機械学会九州支部例会  ( Fukuoka Japan ) 2006.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    農業工学関連学会2006合同大会  ( Sapporo Japan ) 2006.9

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    Type:Competition, symposium, etc. 

  • オーガナイザー

    農業工学関連学会2006合同大会  ( Sapporo Japan ) 2006.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Plasticity2006  ( Halifax UnitedStatesofAmerica ) 2006.7

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2006

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:13

    Number of peer-reviewed articles in Japanese journals:4

    Proceedings of International Conference Number of peer-reviewed papers:3

  • 座長(Chairmanship)

    農業工学関連学会2005合同大会  ( Kanazawa Japan ) 2005.9

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    Type:Competition, symposium, etc. 

  • Soils and Foundations International contribution

    2005.1 - 2009.4

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2005

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:2

    Number of peer-reviewed articles in Japanese journals:3

  • 座長(Chairmanship)

    第59農業機械学会九州支部例会  ( Okinawa Japan ) 2004.10

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    Type:Competition, symposium, etc. 

  • 副座長

    第63回農業機械学会年次大会  ( Kobe Japan ) 2004.4

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2004

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    Type:Peer review 

    Number of peer-reviewed articles in Japanese journals:4

  • 座長(Chairmanship)

    第62回農業機械学会年次大会  ( Ohmiya Japan ) 2003.4

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    Type:Competition, symposium, etc. 

  • 副座長

    第62回農業機械学会年次大会  ( Ohmiya Japan ) 2003.4

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2003

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    Type:Peer review 

    Number of peer-reviewed articles in Japanese journals:3

  • 座長(Chairmanship)

    第61回農業機械学会年次大会  ( Morioka Japan ) 2002.9

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    Type:Competition, symposium, etc. 

  • 農業機械学会九州支部誌

    2002.1 - 2002.10

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    Type:Academic society, research group, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2002

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    Type:Peer review 

    Number of peer-reviewed articles in Japanese journals:2

▼display all

Research Projects

  • Development of Visualization Technologies for the Bottom Environment of Shrimp Culture Ponds Using Autonomous Boats

    Grant number:24K21904  2024.6 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    尾崎 彰則, 岡安 崇史, 入江 博樹, 葉山 清輝

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    Grant type:Scientific research funding

    クルマエビ養殖生産では水底環境管理が極めて重要であり,生産者は潜水作業により汚泥の除去,生産個体の状態確認などを行っている.本研究ではこれらの水底管理作業に対し,自動航行ボートによる水底環境動画の取得と解析により,水底管理作業を支援可能とする技術開発を目指す.具体的には,まず,市販IoTパーツにより自動航行ボートを開発し水底環境動画を撮影する.次に,ボートが撮影する画像を用いて,水底環境特性マップを生成するとともに,水底環境状態のリアルタイム検知技術を開発する.これら2つの見える化技術により,養殖生産支援ひいては水環境関連研究の観測手法として応用できる画期的技術確立に挑戦する.

    CiNii Research

  • 施設栽培における栽培管理AIを搭載した統合型環境制御システムの開発

    2024.4 - 2025.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • イチゴ生産における自動選別パック詰めロボットを活用したスマート出荷体系の構築

    2023.4 - 2026.3

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    Authorship:Coinvestigator(s) 

  • Computational fluid dynamics analysis using sophisticated plant models towards the development of digital twins in greenhouse horticulture

    Grant number:23K05477  2023.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    畔柳 武司, 岡安 崇史, 安武 大輔

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    Grant type:Scientific research funding

    本研究では、温室の数値流体力学(Computational Fluid Dynamics, CFD)解析に精緻な植物モデルを取り入れた温室のデジタルツインの実現を目指す。具体的には、①CFD解析空間に精緻な植物体形状を再現する手法、②植物体内の水・物質移動のCFD解析用モデルを開発し、①の精緻な植物体形状と②の養水分移動等を反映したCFD解析の実現することを目的とする。これらにより、従来のセンサ群では捉えきれない精緻な地上部環境・植物体データをサイバー空間上に再現する温室のデジタルツインの実現を加速し、最適な生育環境の網羅探索等への展開を通じて、我が国の施設園芸を新たな段階へ持ち上げる。

    CiNii Research

  • 耕うん現象の数値シミュレーション技術開発に関する研究

    2023.4 - 2025.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 施設栽培における栽培管理AIを搭載した統合型環境制御システムの開発

    2023.4 - 2024.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 耕うん現象の数値シミュレーション技術開発に関する研究

    2023.4 - 2024.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • デジタルツインを活用した耕うん現象の新解析手法の提案

    Grant number:23K05468  2023 - 2026

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • デジタルツインを活用した耕うん現象の新解析手法の提案

    Grant number:23K05468  2023 - 2025

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 奨学寄附金

    2023

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    Grant type:Donation

  • 透明太陽光パネルの農業用ハウス電源としての利用の可能性検討

    2022.10 - 2023.3

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 施設栽培における栽培管理AIを搭載した統合型環境制御システムの開発

    2022.4 - 2023.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 奨学寄附金

    2022

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    Grant type:Donation

  • DIYスマート環境計測・制御システムおよび活用支援教育コンテンツの設計・開発

    2022

    2022年度 大学発ベンチャー事業シーズ育成支援プログラム・第Ⅵ期 九大ギャップファンド

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • 日本産イチゴの輸出拡大を強力に後押しするスマート高品質生産・出荷体系の構築

    2021.4 - 2023.3

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    Authorship:Coinvestigator(s) 

  • Development of translocation control technique based on the live-imaging-analysis for strawberry production under climate change

    Grant number:21K05860  2021 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    日高 功太, 三好 悠太, 岡安 崇史

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

    イチゴ生産では,地球温暖化に伴うハウス温度の上昇による果実の早熟化とそれがもたらす収穫期のズレや果実品質の低下が深刻な問題となっている.
    本研究では,同化産物の転流プロセスに着目して,収穫期・果実品質の制御や成り疲れの回避を実現するために, RIイメージング技術を用いて転流制御のための局所温度処理条件と,そのメカニズムを解明する.この解明に基づく局所温度処理によって同化産物の転流制御を検討し,その効果をオンサイトフェノタイピング技術を用いた生育特徴量解析(葉面積,果実体積等)で検証することで,温暖化に対応した「高糖度・大玉」イチゴの安定生産と成り疲れの回避を実現する転流制御技術を開発する.

    CiNii Research

  • 日本産イチゴの輸出拡大を強力に後押しするスマート高品質生産・出荷体系の構築

    2021 - 2023

    スマート農業技術の開発・実証プロジェクト及びスマート農業加速化実証プロジェクト

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 経年劣化したバラストの弾塑性変形挙動の数値解析手法に関する研究

    2020.9 - 2021.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 農業機械と土の接触に関する研究

    2020.5 - 2021.8

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 農業機械と土の接触に関する研究

    2020.4 - 2021.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 1st Japan, Thailand and Indonesia Joint Seminar on Sustainable Agricultural Development Goals (SADGs) - Current Status and Future Development on Sustainable Agriculture and Food Supply System in Asia -

    2020 - 2021

    1. 九州大学スーパーグローバル大学創成支援事業(SHARE-Q)における「九州大学ウェビナー100(Webiner100)」

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • 経年劣化したバラストの弾塑性変形挙動の数値解析手法に関する研究

    2019.10 - 2020.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • スマート農業技術の開発・実証プロジェクト「促成イチゴ栽培における圃場内環境および作物生育情報を活用した局所適時環境調節技術による省エネ多収安定生産と自動選別・パック詰めロボットを活用した調製作業の省力化による次世代型経営体系の検証」

    2019.4 - 2021.3

    スマート農業技術の開発・実証プロジェクト 

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    Authorship:Coinvestigator(s) 

  • 遠隔制御ロボットによる果樹受粉作業のAI化と農作業への障害者活用

    Grant number:19K06328  2019 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    長谷川 克也, 岡安 崇史, 跡見 友章

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

    CiNii Research

  • 促成イチゴ栽培における圃場内環境および作物生育情報を活用した局所適時環境調節技術による省エネ多収安定生産と自動選別・パック詰めロボットを活用した調製作業の省力化による次世代型経営体系の検証

    2019 - 2020

    スマート農業技術の開発・実証プロジェクト

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 「戦略的イノベーション創造プログラム」(スマートバイオ産業・農業基盤技術)「生産から流通・消費までのデータ連携により最適化を可能とするスマー トフードチェーンの構築」

    2018.10 - 2022.9

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    Authorship:Coinvestigator(s) 

  • 需要に応じた食の安定供給モデルのシステム化に関する研究

    2018.4 - 2020.3

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 生産から流通・消費までのデータ連携により最適化を可能とするスマートフードチェーンの構築

    2018 - 2022

    「戦略的イノベーション創造プログラム」(スマートバイオ産業・農業基盤技術)

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 作物栽培技術学習のための多元センシングに基づく作物栽培知識マップの形成

    Grant number:18H04117  2018 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 低コスト・汎用デバイスを用いた高速植物フェノタイピングシステムの開発

    Grant number:18K05906  2018 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • STARTプロジェクト支援型第2サイクル:農産物の品質や生産性を向上させる為の環境制御システムの開発

    2017.10 - 2020.3

    国立大学法人九州大学 

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    Authorship:Coinvestigator(s) 

  • 農産物の品質や生産性を向上させる為の環境制御システムの開発

    2017 - 2020

    Special Coordination Fund for Promoting Science and Technology (Ministry of Education, Culture, Sports, Science and Technology)

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 栽培時農業情報の融合のための植物モデル構築

    Grant number:17H01768  2017 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 「革新的技術開発・緊急展開事業」(うち地域戦略プロジェクト)イチゴの省エネ栽培・収量予測・低コスト輸送技術の融合による販売力・国際競争力の強化

    2016.10 - 2019.9

    国立大学法人九州大学 

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    Authorship:Principal investigator 

    https://www.ichigo.agri-eye.net/

  • 「革新的技術開発・緊急展開事業」(うち地域戦略プロジェクト)UECSプラットホームで日本型施設園芸が活きるスマート農業の実証

    2016.5 - 2018.5

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    Authorship:Coinvestigator(s) 

  • イチゴの省エネ栽培・収量予測・低コスト輸送技術の融合による販売力・国際競争力の強化

    2016 - 2019

    革新的技術開発・緊急展開事業(うち地域戦略プロジェクト)【第2回】

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    Authorship:Principal investigator  Grant type:Contract research

  • UECSプラットホームで日本型施設園芸が活きるスマート農業の実証

    2016 - 2019

    革新的技術開発・緊急展開事業

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 奨学寄附金

    2016

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    Grant type:Donation

  • 奨学寄附金

    2016

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    Grant type:Donation

  • 奨学寄附金

    2016

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    Grant type:Donation

  • 圃場環境情報とカメラ画像を用いたイチゴの生育評価システムの開発

    2015.10 - 2017.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ハウス栽培におけるオゾンを活用した滅菌・殺菌技術の研究・開発

    2015.7 - 2017.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 気象環境・画像情報のリアルタイム特徴量抽出システムの開発と農業生産への応用

    Grant number:15K07677  2015 - 2017

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 次世代農業支援のための高機能センシング技術の開発

    Grant number:15H01695  2015 - 2017

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 準天頂衛星を利用したマルチコプター自動飛行による超効率型農業経営のモデル研究

    Grant number:15K07683  2015 - 2017

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 奨学寄附金

    2015

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    Grant type:Donation

  • 奨学寄附金

    2015

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    Grant type:Donation

  • 奨学寄附金

    2014

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    Grant type:Donation

  • 奨学寄附金

    2014

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    Grant type:Donation

  • 奨学寄附金

    2014

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    Grant type:Donation

  • 広域大区画農地の水稲生産におけるICT利用自動化システムの開発

    2013 - 2016

    平成26年度官民連携新技術研究開発事業

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • バングラデシュ国 ICTの高度活用によるBOP層農民の組織化支援

    2013 - 2016

    草の根技術協力事業(草の根パートナー型)

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • オープンCPU基板を用いた低コスト自律分散型施設環境計測制御情報システムの構築

    Grant number:25292157  2013 - 2015

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 唐津ブランド戦略支援型、防災・減災システム

    2013

    ICT街づくり推進事業

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid)  Grant type:Contract research

  • 奨学寄附金

    2013

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    Grant type:Donation

  • 新型フィールドサーバとフィールドビジョンに関する研究

    2012.6 - 2013.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 農業ICTに関するパイロットシステムの研究・開発

    2012.6 - 2013.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • IT活用による高品質いちご栽培システムの開発

    2012.4 - 2013.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ハウストマト栽培のためのIT基盤の構築とその利活用の高度化に関する研究

    2012.2 - 2013.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 農業分野におけるソーシアルネットワーク利活用に向けた人材育成事業

    2012 - 2014

    九州経済産業局平成24年度企業立地促進法補助金

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 奨学寄附金

    2012

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    Grant type:Donation

  • イチゴ(あまおう)の糖度アップを目的とした灌水制御のあり方の研究・開発

    2011.10 - 2012.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • イノシシによる農業被害の現況調査と軽減技術のプロトタイプ開発

    2011.4 - 2012.3

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 素材を活かした高品質いちごジャムの開発-素材となるいちごの品質向上のため、IT を活用した高度な生産技術の確立-

    2011.4 - 2012.3

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 多様な土壌条件に対応し得る三次元耕うんシミュレータの開発

    Grant number:23780258  2011 - 2012

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • イチゴの高収益安定生産を目指した条間配風ダクトによる適温管理とCO2施用

    2011

    平成23年度糸島市九州大学連携研究助成金

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 奨学寄付金

    2011

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    Grant type:Donation

  • 奨学寄付金

    2011

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    Grant type:Donation

  • ICTを活用したBOP層農民所得向上プロジェクト International coauthorship

    2010.7 - 2013.6

    九州大学 

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    バングラデシュでは,零細なBOP層農民の所得向上が貧困削減に不可欠である.同国政府農業指導員の人数・提供情報が限られるなか,農村に普及し始めたテレセンターを拠点に,ICT(情報通信技術)を活用し,農民が必要とする多様な農業情報をいつでも提供出来る体制を作る意義・必要性がある.
    http://igpf.gramweb.net/jp/index.htmより抜粋

  • IT活用による高品質いちご栽培システムの開発

    2010.6 - 2011.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 農家の作業技術の数値化およびデータマイニング手法の研究開発

    2010.4 - 2014.3

    九州大学 

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    本研究開発では、今後数年で急速に失われていく可能性のある篤農家の有する「匠の技」(暗黙知)を可視化し、他の農業者や新規参入者等に継承する仕組み確立する。このため、「農家の作業技術の数値化およびデータマイニング手法の研究開発」を行う。本提案で研究開発を行う手法およびシステムを総称して「農匠ナビ」(のうしょうなび)と呼ぶ。

  • 農家の作業技術の数値化およびデータマイニング手法の研究開発

    2010 - 2014

    農作業の軽労化に向けた農業自動化・アシストシステムの開発

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 糸島地域における情報化農業推進のためのIT基盤システムの開発

    2010

    平成22年度糸島市九州大学連携研究助成金

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    Authorship:Principal investigator  Grant type:Contract research

  • 奨学寄付金

    2010

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    Grant type:Donation

  • 数値解析による小明渠浅耕播種機作溝部の最適設計に関する研究

    2009.4 - 2010.3

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 諫早湾干拓大規模環境保全型農地における圃場機械による土壌踏圧メカニズムの解明

    Grant number:21780231  2009 - 2010

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 岐阜大学ブランド野菜の生産流通による産学連携農業モデルの構築

    2009

    平成21年度岐阜大学活性化経費(地域連携:一般)

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 数値解析による小明渠作溝用サイドディスクの最適設計に関する研究

    2008.10 - 2008.11

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 奨学寄付金

    2008

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    Grant type:Donation

  • 現代的教育ニーズ取組支援プログラム: 地域環境・農業活用による大学教育の活性化

    2007.10 - 2010.3

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    Authorship:Coinvestigator(s) 

    本取組では,九州大学と糸島地域が有機的連携を図り,農業を基盤とする同地域の持続的発展と調和した新しい学生教育学習基盤の形成を目指す.そこで,糸島地域に分散する農地や畜舎等の生物生産基盤,森林・ため池・河川等の環境資源,歴史的・文化的資源等を集約したネットワーク型農学校を創設し,これを核に学生参加型・体験型教育システムを構築する.具体的には,①農業体験実習プログラム,②農村留学プログラム,③小中学校体験学習受入プログラム,④シルバー世代受入プログラム,⑤教育研究サイトとしての耕作放棄地の利活用プログラムから構成される.本取組を通じて,学生の食・環境・地域文化への意識や自発的に問題を発見し解決する能力を養いつつ,地域との人的交流の深化によりコミュニケーション能力,マネージメント能力,ファシリテ-ション能力を養う.さらに,成果を地域に積極的に還元しうるシステムを整備し,地域社会の活性化を促す.

  • 立木伐倒における鋸断部の応力解析

    2007.7 - 2008.3

    Research commissions

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 地域環境・農業活用による大学教育の活性化

    2007 - 2009

    Grants-in-Aid for Scientific Research 

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    Authorship:Coinvestigator(s)  Grant type:Competitive funding other than Grants-in-Aid for Scientific Research

  • 奨学寄付金

    2007

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    Grant type:Donation

  • 奨学寄付金

    2007

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    Grant type:Donation

  • 大都市周辺生態圏・河川領域における環境科学研究創成のための次世代研究者ネットワークの構築

    2007

    大学運営経費等・研)部局長裁量経費

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • 圃場環境モニタリングデータの営農利用に関する基礎的研究

    2006.9 - 2007.3

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 要間伐林分の効率的施業法の開発(立木伐倒における鋸断部の応力解析)

    2006.4 - 2007.3

    Research commissions

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • コンバイン脱穀選別部内の風選メカニズムの理論的解明と選別制御への応用

    Grant number:18380149  2006 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 伊都キャンパス農学研究院分室を拠点とした糸島地域の持続的農業のための効率的水資源利用技術の研究展開

    2006 - 2007

    P&P

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    Authorship:Coinvestigator(s)  Grant type:On-campus funds, funds, etc.

  • 奨学寄付金

    2006

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    Grant type:Donation

  • 奨学寄付金

    2006

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    Grant type:Donation

  • 大都市周辺生態圏・河川領域における環境科学研究創成のための次世代研究者ネットワークの構築

    2006

    大学運営経費等・研)部局長裁量経費

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • 農業機械・施設・利用技術による耕地環境影響の広域分散ネットワーク型評価手法開発

    Grant number:17208022  2005 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 奨学寄付金

    2005

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    Grant type:Donation

  • サイロ内粉粒材料の異常流動現象の発生因子およびそのメカニズムの解明

    Grant number:16780183  2004 - 2005

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 土壌槽試験におけるPIV活用による土の変形・応力計測/算定オンラインシステム

    Grant number:14360150  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

▼display all

Educational Activities

  • Undergraduate School
    Special Lecture on Advanced Topics of Agriculture
    Water, Soil and Green in Itoshima Area
    Agri-Food Production System Engineering
    Agricultural Informatics
    Structural Mechanics
    Farm Machinery II
    Machinery Design II
    Scientific English
    Graduation Research (Bioproduction System Engineering)

    Graduate School
    Master Course
    Advanced Bioproduction Environmental Data Analyses
    Bioproduction Environmental Sciences
    Bioproduction Environmental Sciences Special Reseach II
    Bioproduction Environmental Sciences Project Learning
    Advanced Production Systsems Desgin
    Graduation Research (Bioproduction Environmental Science)

Class subject

  • 自動制御工学Ⅱ

    2024.12 - 2025.2   Winter quarter

  • 情報演習Ⅱ

    2024.10 - 2025.3   Second semester

  • 構造力学

    2024.10 - 2025.3   Second semester

  • 自動制御工学Ⅰ

    2024.10 - 2024.12   Fall quarter

  • 生産システム設計学特論

    2024.10 - 2024.12   Fall quarter

  • 機械設計学Ⅱ

    2024.6 - 2024.8   Summer quarter

  • 卒業研究(生物生産システム工学分野)

    2024.4 - 2025.3   Full year

  • Master's Thesis Research Ⅰ

    2024.4 - 2025.3   Full year

  • Seminar in a Specified Field Ⅰ

    2024.4 - 2025.3   Full year

  • 情報演習Ⅰ

    2024.4 - 2024.9   First semester

  • 科学英語(生物生産システム工学分野)

    2024.4 - 2024.9   First semester

  • 生産環境データ解析論

    2024.4 - 2024.6   Spring quarter

  • 農業情報学

    2023.12 - 2024.2   Winter quarter

  • 自動制御工学Ⅱ

    2023.12 - 2024.2   Winter quarter

  • 情報演習Ⅱ

    2023.10 - 2024.3   Second semester

  • 構造力学

    2023.10 - 2024.3   Second semester

  • 生産環境科学演習第一

    2023.10 - 2024.3   Second semester

  • 生産環境科学演習第二

    2023.10 - 2024.3   Second semester

  • 自動制御工学Ⅰ

    2023.10 - 2023.12   Fall quarter

  • 生産システム設計学特論

    2023.10 - 2023.12   Fall quarter

  • 生物生産機械学Ⅱ

    2023.6 - 2023.8   Summer quarter

  • 機械設計学Ⅱ

    2023.6 - 2023.8   Summer quarter

  • 生産環境科学プロジェクト演習

    2023.4 - 2024.3   Full year

  • 修士論文

    2023.4 - 2024.3   Full year

  • 生産環境科学特別研究第二

    2023.4 - 2024.3   Full year

  • 生産環境科学特別研究第一

    2023.4 - 2024.3   Full year

  • 情報演習Ⅰ

    2023.4 - 2023.9   First semester

  • 生産環境の科学

    2023.4 - 2023.6   Spring quarter

  • 生産環境データ解析論

    2023.4 - 2023.6   Spring quarter

  • 生産環境の科学(国際コース)

    2023.4 - 2023.6   Spring quarter

  • 農業情報学

    2022.12 - 2023.2   Winter quarter

  • 自動制御工学Ⅱ

    2022.12 - 2023.2   Winter quarter

  • 農業情報学

    2022.12 - 2023.2   Winter quarter

  • 農学入門Ⅰ

    2022.10 - 2023.3   Second semester

  • 構造力学

    2022.10 - 2023.3   Second semester

  • 生物生産システム工学問題演習

    2022.10 - 2023.3   Second semester

  • Agri-Food Production System Engineering

    2022.10 - 2023.3   Second semester

  • 構造力学

    2022.10 - 2023.3   Second semester

  • 構造力学

    2022.10 - 2023.3   Second semester

  • 自動制御工学Ⅰ

    2022.10 - 2022.12   Fall quarter

  • 生産システム設計学特論

    2022.10 - 2022.12   Fall quarter

  • 農学入門Ⅰ

    2022.10 - 2022.12   Fall quarter

  • 持続可能な農業生産・食料流通システム

    2022.10 - 2022.12   Fall quarter

  • 生産システム設計学特論

    2022.10 - 2022.12   Fall quarter

  • 生物生産機械学Ⅱ

    2022.6 - 2022.8   Summer quarter

  • 機械設計学Ⅱ

    2022.6 - 2022.8   Summer quarter

  • 機械設計学Ⅱ

    2022.6 - 2022.8   Summer quarter

  • 生物生産機械学Ⅱ

    2022.6 - 2022.8   Summer quarter

  • 卒業研究(生物生産システム工学分野)

    2022.4 - 2023.3   Full year

  • Master's Thesis

    2022.4 - 2023.3   Full year

  • Seminar in a Specified Field Ⅱ

    2022.4 - 2023.3   Full year

  • Master's Thesis Research Ⅱ

    2022.4 - 2023.3   Full year

  • 科学英語(生物生産システム工学分野)

    2022.4 - 2022.9   First semester

  • 生物生産システム工学実験

    2022.4 - 2022.9   First semester

  • 数学共創概論Ⅰ

    2022.4 - 2022.9   First semester

  • 生産環境データ解析論

    2022.4 - 2022.6   Spring quarter

  • 生産環境データ解析論

    2022.4 - 2022.6   Spring quarter

  • Master's Thesis Research Ⅰ

    2022.4 - 2022.6   Spring quarter

  • 生産環境データ解析論

    2022.4 - 2022.6   Spring quarter

  • Master's Thesis

    2022.4 - 2022.6   Spring quarter

  • Seminar in a Specified Field Ⅱ

    2022.4 - 2022.6   Spring quarter

  • Master's Thesis Research Ⅱ

    2022.4 - 2022.6   Spring quarter

  • 農業情報学

    2021.12 - 2022.2   Winter quarter

  • 自動制御工学

    2021.10 - 2022.3   Second semester

  • 構造力学

    2021.10 - 2022.3   Second semester

  • 数学共創概論Ⅰ

    2021.4 - 2021.9   First semester

  • 生物生産システム工学実験

    2021.4 - 2021.9   First semester

  • Seminar in a Specified Field Ⅰ

    2021.4 - 2021.6   Spring quarter

  • 生産環境データ解析論

    2021.4 - 2021.6   Spring quarter

  • Master's Thesis Research Ⅰ

    2021.4 - 2021.6   Spring quarter

  • 農業情報学

    2020.12 - 2021.2   Winter quarter

  • 構造力学

    2020.10 - 2021.3   Second semester

  • 持続可能な農業生産・食料流通システム

    2020.10 - 2020.12   Fall quarter

  • Master's Thesis

    2020.4 - 2020.6   Spring quarter

  • 生産環境データ解析論

    2020.4 - 2020.6   Spring quarter

  • Master's Thesis Research Ⅱ

    2020.4 - 2020.6   Spring quarter

  • Seminar in a Specified Field Ⅱ

    2020.4 - 2020.6   Spring quarter

  • 農業情報学

    2019.12 - 2020.2   Winter quarter

  • 農業情報学

    2019.12 - 2020.2   Winter quarter

  • 少人数セミナー

    2019.12 - 2020.2   Winter quarter

  • スマート農業概論

    2019.12 - 2020.2   Winter quarter

  • Agri-Food Production System Engineering

    2019.10 - 2020.3   Second semester

  • 構造力学

    2019.10 - 2020.3   Second semester

  • 課題協学科目

    2019.10 - 2020.3   Second semester

  • 構造力学

    2019.10 - 2020.3   Second semester

  • 生産環境データ解析論

    2019.10 - 2020.3   Second semester

  • 持続可能な農業生産・食料流通システム

    2019.10 - 2019.12   Fall quarter

  • 修士論文

    2019.4 - 2020.3   Full year

  • Special Lecture on Advanced Topics of Agriculture

    2019.4 - 2019.9   First semester

  • 材料力学

    2019.4 - 2019.9   First semester

  • 生産環境の科学

    2019.4 - 2019.9   First semester

  • 糸島の水と土と緑

    2019.4 - 2019.9   First semester

  • 材料力学

    2019.4 - 2019.9   First semester

  • Seminar in a Specified FieldⅡ

    2019.4 - 2019.6   Spring quarter

  • 生産環境データ解析論

    2019.4 - 2019.6   Spring quarter

  • Seminar in a Specified Field Ⅲ

    2019.4 - 2019.6   Spring quarter

  • Master's Thesis Research Ⅱ

    2019.4 - 2019.6   Spring quarter

  • Seminar in a Specified Field Ⅰ

    2019.4 - 2019.6   Spring quarter

  • Master's Thesis Research Ⅰ

    2019.4 - 2019.6   Spring quarter

  • Special Lecture on Advanced Topics of Agriculture 5

    2019.4 - 2019.6   Spring quarter

  • Master’s Thesis ResearchⅠ

    2019.4 - 2019.6   Spring quarter

  • 生物生産システム工学

    2018.10 - 2019.3   Second semester

  • 生物生産システム工学

    2018.10 - 2019.3   Second semester

  • 生産環境データ解析論

    2018.10 - 2019.3   Second semester

  • Agri-Food Production System Engineering

    2018.10 - 2019.3   Second semester

  • 持続可能な農業生産・食料流通システム

    2018.10 - 2018.12   Fall quarter

  • 材料力学

    2018.4 - 2018.9   First semester

  • 生産環境の科学

    2018.4 - 2018.9   First semester

  • 糸島の水と土と緑

    2018.4 - 2018.9   First semester

  • 材料力学

    2018.4 - 2018.9   First semester

  • Special Lecture on Advanced Topics of Agriculture

    2018.4 - 2018.9   First semester

  • 生産環境データ解析論

    2018.4 - 2018.6   Spring quarter

  • Master’s Thesis ResearchⅠ

    2018.4 - 2018.6   Spring quarter

  • Seminar in a Specified FieldⅡ

    2018.4 - 2018.6   Spring quarter

  • Master's Thesis Research II

    2018.4 - 2018.6   Spring quarter

  • Master's Thesis

    2018.4 - 2018.6   Spring quarter

  • Master’s Thesis ResearchⅠ

    2018.4 - 2018.6   Spring quarter

  • Seminar in a Specified FieldⅡ

    2018.4 - 2018.6   Spring quarter

  • 材料力学Ⅱ

    2017.10 - 2018.3   Second semester

  • 生物生産システム工学

    2017.10 - 2018.3   Second semester

  • 生産システム設計学特論

    2017.10 - 2018.3   Second semester

  • 生物生産システム工学

    2017.10 - 2018.3   Second semester

  • 生産環境データ解析論

    2017.10 - 2018.3   Second semester

  • Agri-Food Production System Engineering

    2017.10 - 2018.3   Second semester

  • 生産システム設計学特論

    2017.10 - 2018.3   Second semester

  • Seminar in a Specified Field III

    2017.10 - 2017.12   Fall quarter

  • Seminar in a Specified Field I

    2017.10 - 2017.12   Fall quarter

  • 生産環境科学特別研究第1

    2017.4 - 2018.3   Full year

  • 生産環境科学プロジェクト演習

    2017.4 - 2018.3   Full year

  • 生産環境科学特別研究第2

    2017.4 - 2018.3   Full year

  • 材料力学

    2017.4 - 2017.9   First semester

  • 生産環境データ解析論

    2017.4 - 2017.9   First semester

  • 生産環境の科学

    2017.4 - 2017.9   First semester

  • 生産環境の科学

    2017.4 - 2017.9   First semester

  • 糸島の水と土と緑

    2017.4 - 2017.9   First semester

  • 材料力学

    2017.4 - 2017.9   First semester

  • Special Lecture on Advanced Topics of Agriculture

    2017.4 - 2017.9   First semester

  • 生産環境データ解析論

    2017.4 - 2017.9   First semester

  • Seminar in a Specified FieldⅡ

    2017.4 - 2017.6   Spring quarter

  • 糸島の水と土と緑Ⅰ

    2017.4 - 2017.6   Spring quarter

  • Master’s Thesis ResearchⅠ

    2017.4 - 2017.6   Spring quarter

  • 生産システム設計学特論

    2016.10 - 2017.3   Second semester

  • 生物生産システム工学

    2016.10 - 2017.3   Second semester

  • 科学英語

    2016.10 - 2017.3   Second semester

  • 材料力学Ⅱ

    2016.10 - 2017.3   Second semester

  • 生産環境データ解析論

    2016.10 - 2017.3   Second semester

  • Agri-Food Production System Engineering

    2016.10 - 2017.3   Second semester

  • 生産環境科学特別研究第1

    2016.4 - 2017.3   Full year

  • 生産環境科学プロジェクト演習

    2016.4 - 2017.3   Full year

  • 生産環境科学特別研究第2

    2016.4 - 2017.3   Full year

  • Special Lecture on Advanced Topics of Agriculture

    2016.4 - 2016.9   First semester

  • 基幹物理学ⅠA

    2016.4 - 2016.9   First semester

  • 生産環境の科学

    2016.4 - 2016.9   First semester

  • 糸島の水と土と緑

    2016.4 - 2016.9   First semester

  • 材料力学I

    2016.4 - 2016.9   First semester

  • 糸島農村留学

    2016.4 - 2016.9   First semester

  • 生産システム設計学特論

    2015.10 - 2016.3   Second semester

  • 生物生産システム工学

    2015.10 - 2016.3   Second semester

  • 科学英語

    2015.10 - 2016.3   Second semester

  • 材料力学Ⅱ

    2015.10 - 2016.3   Second semester

  • 生産環境データ解析論

    2015.10 - 2016.3   Second semester

  • Agri-Food Production System Engineering

    2015.10 - 2016.3   Second semester

  • 生産環境科学特別研究第2

    2015.4 - 2016.3   Full year

  • 生産環境科学プロジェクト演習

    2015.4 - 2016.3   Full year

  • 生産環境科学特別研究第1

    2015.4 - 2016.3   Full year

  • Special Lecture on Advanced Topics of Agriculture

    2015.4 - 2015.9   First semester

  • 基幹物理学ⅠA

    2015.4 - 2015.9   First semester

  • 情報科学

    2015.4 - 2015.9   First semester

  • 生産環境の科学

    2015.4 - 2015.9   First semester

  • 糸島の水と土と緑

    2015.4 - 2015.9   First semester

  • 材料力学I

    2015.4 - 2015.9   First semester

  • 糸島農村留学

    2015.4 - 2015.9   First semester

  • 生産システム設計学特論

    2014.10 - 2015.3   Second semester

  • 科学英語I

    2014.10 - 2015.3   Second semester

  • 材料力学Ⅱ

    2014.10 - 2015.3   Second semester

  • 生産環境データ解析論

    2014.10 - 2015.3   Second semester

  • Agri-Food Production System Engineering

    2014.10 - 2015.3   Second semester

  • Special Lecture on Advanced Topics of Agriculture

    2014.4 - 2014.9   First semester

  • 基幹物理学ⅠA

    2014.4 - 2014.9   First semester

  • 生産環境の科学

    2014.4 - 2014.9   First semester

  • 糸島の水と土と緑

    2014.4 - 2014.9   First semester

  • 科学英語Ⅱ

    2014.4 - 2014.9   First semester

  • 材料力学I

    2014.4 - 2014.9   First semester

  • 糸島農村留学

    2014.4 - 2014.9   First semester

  • 生産システム設計学特論

    2013.10 - 2014.3   Second semester

  • 科学英語I

    2013.10 - 2014.3   Second semester

  • 材料力学Ⅱ

    2013.10 - 2014.3   Second semester

  • 生産環境データ解析論

    2013.10 - 2014.3   Second semester

  • Agri-Food Production System Engineering

    2013.10 - 2014.3   Second semester

  • Bioproduction Environmental Sciences II

    2013.4 - 2013.9   First semester

  • 生産環境の科学

    2013.4 - 2013.9   First semester

  • 糸島の水と土と緑

    2013.4 - 2013.9   First semester

  • 科学英語Ⅱ

    2013.4 - 2013.9   First semester

  • 材料力学I

    2013.4 - 2013.9   First semester

  • 糸島農村留学

    2013.4 - 2013.9   First semester

  • Special Lecture on Advanced Topics of Agriculture

    2013.4 - 2013.9   First semester

  • Agri-Food Production System Engineering

    2012.10 - 2013.3   Second semester

  • 科学英語I

    2012.10 - 2013.3   Second semester

  • 材料力学Ⅱ

    2012.10 - 2013.3   Second semester

  • 生産環境データ解析論

    2012.10 - 2013.3   Second semester

  • Special Lecture on Advanced Topics of Agriculture

    2012.4 - 2012.9   First semester

  • 糸島の水と土と緑

    2012.4 - 2012.9   First semester

  • 科学英語Ⅱ

    2012.4 - 2012.9   First semester

  • 材料力学I

    2012.4 - 2012.9   First semester

  • 糸島農村留学

    2012.4 - 2012.9   First semester

  • 糸島農村留学

    2011.10 - 2012.3   Second semester

  • 科学英語I

    2011.10 - 2012.3   Second semester

  • 糸島で学ぶ“卓越した過去の農業生産技術と現代日本農業

    2011.10 - 2012.3   Second semester

  • 基礎静力学

    2011.10 - 2012.3   Second semester

  • 生産環境データ解析論

    2011.10 - 2012.3   Second semester

  • Special Lecture on Advanced Topics of Agriculture

    2011.4 - 2011.9   First semester

  • 生産環境の科学

    2011.4 - 2011.9   First semester

  • 糸島の水と土と緑

    2011.4 - 2011.9   First semester

  • 材料力学

    2011.4 - 2011.9   First semester

  • 科学英語Ⅱ

    2011.4 - 2011.9   First semester

  • 糸島農村留学

    2010.10 - 2011.3   Second semester

  • 基礎静力学

    2010.10 - 2011.3   Second semester

  • 生産環境データ解析論

    2010.10 - 2011.3   Second semester

  • 糸島で学ぶ“卓越した過去の農業生産技術と現代日本農業

    2010.10 - 2011.3   Second semester

  • 科学英語I

    2010.10 - 2011.3   Second semester

  • 農業科指導法Ⅰ

    2010.4 - 2010.9   First semester

  • 科学英語Ⅱ

    2010.4 - 2010.9   First semester

  • 生産環境の科学

    2010.4 - 2010.9   First semester

  • 糸島の水と土と緑

    2010.4 - 2010.9   First semester

  • 材料力学

    2010.4 - 2010.9   First semester

  • 科学英語I

    2009.10 - 2010.3   Second semester

  • 糸島で学ぶ“卓越した過去の農業生産技術と現代日本農業

    2009.10 - 2010.3   Second semester

  • 糸島農村留学

    2009.10 - 2010.3   Second semester

  • 基礎静力学

    2009.10 - 2010.3   Second semester

  • 生物生産システム工学

    2009.10 - 2010.3   Second semester

  • 生物生産工学特別演習第二

    2009.4 - 2010.3   Full year

  • 科学英語Ⅱ

    2009.4 - 2009.9   First semester

  • 材料力学

    2009.4 - 2009.9   First semester

  • 糸島の水と土と緑

    2009.4 - 2009.9   First semester

  • 計算力学特論

    2009.4 - 2009.9   First semester

  • 科学英語I

    2008.10 - 2009.3   Second semester

  • 基礎静力学

    2008.10 - 2009.3   Second semester

  • 生物生産システム工学

    2008.10 - 2009.3   Second semester

  • 生物生産工学特別演習第二

    2008.4 - 2009.3   Full year

  • 科学英語Ⅱ

    2008.4 - 2008.9   First semester

  • 応用力学演習

    2008.4 - 2008.9   First semester

  • 応用力学

    2008.4 - 2008.9   First semester

  • 糸島の水と土と緑

    2008.4 - 2008.9   First semester

  • 計算力学特論

    2008.4 - 2008.9   First semester

  • 科学英語I

    2007.10 - 2008.3   Second semester

  • Bioproduction Environmental Sciences II

    2007.10 - 2008.3   Second semester

  • 応用力学入門

    2007.10 - 2008.3   Second semester

  • 生物生産工学特別演習第二

    2007.4 - 2008.3   Full year

  • 科学英語Ⅱ

    2007.4 - 2007.9   First semester

  • 応用力学演習

    2007.4 - 2007.9   First semester

  • 応用力学

    2007.4 - 2007.9   First semester

  • 計算力学特論

    2007.4 - 2007.9   First semester

  • Bioproduction Environmental Sciences II

    2006.10 - 2007.3   Second semester

  • 応用力学特論

    2006.10 - 2007.3   Second semester

  • 科学英語I

    2006.10 - 2007.3   Second semester

  • 応用力学入門

    2006.10 - 2007.3   Second semester

  • 応用力学演習

    2006.4 - 2006.9   First semester

  • 生物生産機械学実験

    2006.4 - 2006.9   First semester

  • 応用力学

    2006.4 - 2006.9   First semester

  • 科学英語I

    2005.10 - 2006.3   Second semester

  • 生物生産機械学実験

    2005.4 - 2005.9   First semester

  • Bioproduction Environmental Sciences II

    2004.10 - 2005.3   Second semester

  • 応用力学入門

    2003.10 - 2004.3   Second semester

  • 応用力学入門

    2003.10 - 2004.3   Second semester

  • 統計的方法論演習

    2003.4 - 2003.9   First semester

  • 応用力学

    2003.4 - 2003.9   First semester

  • 応用力学演習

    2003.4 - 2003.9   First semester

  • 応用力学

    2003.4 - 2003.9   First semester

  • 応用力学演習

    2003.4 - 2003.9   First semester

  • 統計的方法論

    2003.4 - 2003.9   First semester

  • 自動制御工学Ⅱ

    2024.12 - 2025.2   Winter quarter

  • 農業情報学

    2024.12 - 2025.2   Winter quarter

  • 構造力学

    2024.10 - 2025.3   Second semester

  • 情報演習Ⅱ

    2024.10 - 2025.3   Second semester

  • 生産システム設計学特論

    2024.10 - 2024.12   Fall quarter

  • 自動制御工学Ⅰ

    2024.10 - 2024.12   Fall quarter

  • 持続可能な農業生産・食料流通システム

    2024.10 - 2024.12   Fall quarter

  • Agri-Food Production System Engineering Ⅰ

    2024.10 - 2024.12   Fall quarter

  • 機械設計学Ⅱ

    2024.6 - 2024.8   Summer quarter

  • 生物生産機械学Ⅱ

    2024.6 - 2024.8   Summer quarter

  • 卒業研究(生物生産システム工学分野)

    2024.4 - 2025.3   Full year

  • Seminar in a Specified Field Ⅰ

    2024.4 - 2025.3   Full year

  • Master's Thesis Research Ⅰ

    2024.4 - 2025.3   Full year

  • 情報演習Ⅰ

    2024.4 - 2024.9   First semester

  • 科学英語(生物生産システム工学分野)

    2024.4 - 2024.9   First semester

  • 生産環境データ解析論

    2024.4 - 2024.6   Spring quarter

▼display all

FD Participation

  • 2019.5   Role:Participation   Title:優良な博士人材の獲得と育成に向けて~農学研究院教授に学ぶ ~

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2010.6   Role:Participation   Title:農学研究院における情報セキュリティについて

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2009.8   Role:Participation   Title:農学研究院部門組織再編の基本方針等について

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2009.6   Role:Participation   Title:農学研究院の国際化に向けた取り組み~アジア農学教育のプラットフォーム形成~

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2007.6   Role:Participation   Title:学生指導について

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2006.10   Role:Participation   Title:教職員のメンタルヘルスケアについて

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2006.7   Role:Participation   Title:1)安全管理について 2)e−ラーニングについて

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2006.6   Role:Participation   Title:法人化後の九州大学農学研究院の目指すべき方向性

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2006.5   Role:Participation   Title:学生指導について

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2005.5   Role:Participation   Title:学生指導について

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2005.3   Role:Participation   Title:農林水産研究基本計画について場所

    Organizer:[Undergraduate school/graduate school/graduate faculty]

▼display all

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2019  バイオシステム工学特別講義Ⅰ  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2019/09/9-11

  • 2018  琉球大学(JICA)  Classification:Intensive course  Domestic/International Classification:Japan 

  • 2017  琉球大学(JICA)  Classification:Intensive course  Domestic/International Classification:Japan 

  • 2016  琉球大学(JICA)  Classification:Intensive course  Domestic/International Classification:Japan 

  • 2014  東京大学大学院農学生命科学研究科 生物・環境工学専修  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:「生物システム工学特論」 集中講義

  • 2013  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2013.4-2014.3

  • 2012  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2012.4-2013.3

  • 2011  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2011.4-2012.3

  • 2010  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2010.4-2011.3

  • 2009  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2009.4-2010.3

  • 2008  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2008.4-2009.3

  • 2007  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2007.4-2008.3

  • 2006  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2006-2007

  • 2005  渕上医療福祉専門学校  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2005-2006

▼display all

Participation in international educational events, etc.

  • 2007.10

    九州大学

    大学サミット・イン・九州2007「都市と大学~大学がいかに地域に貢献できるか~」

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    Venue:日本・福岡

Other educational activity and Special note

  • 2024  Class Teacher  学部

  • 2022  Class Teacher  学部

  • 2017  Class Teacher  学部

Social Activities

  • 第4・5回スマート農業塾2022の開催

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2023.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • JAオホーツク青年部の施設見学

    JAオホーツク青年部  伊都キャンパス  2022.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • 第2回スマート農業塾2022の開催

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第3回スマート農業塾2022の開催

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第1回スマート農業塾2022の開催

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第1回スマート農業塾2022の開催

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 農業教育研究部会研修会

    福岡県内農業高校  2022.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第6回 環境モニタリング装置の設置遠隔からの環境情報の確認方法4 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第6回 環境モニタリング装置の設置遠隔からの環境情報の確認方法4 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第5回 環境モニタリング装置の設置遠隔からの環境情報の確認方法3 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2022.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第4回 環境モニタリング装置の設置遠隔からの環境情報の確認方法2 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2021.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第3回 環境モニタリング装置の設置遠隔からの環境情報の確認方法1 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2021.10

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第2回 第2回 環境モニタリング装置の製作 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2021.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第1回 スマート農業の可能性や意義について 農業者自らはじめる!スマート農業塾,

    糸島地域広域連携プロジェクト推進会議事業  伊都キャンパス  2021.7

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • DX で変わる・変える地域農業

    地盤工学会関西支部  ウェビナー  2021.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 画像情報を用いて植物の特徴を探す

    第207回SAM会  ウェビナー  2021.4

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • スマートファームについて

    九州大学大学院農学研究院,九州大学学術研究都市推進機構  西鉄グランドホテル  2021.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • スマート農業で作るホウレンソウ教室

    福岡市内小学校  2020.12

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 画像センシングによる植物生育特微量の計測とその利用

    スマートアグリシンポジウム  ウェビナー  2020.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 不明

    九州大学大学院農学研究院伊都キャンパス農場フォーラム  九州大学伊都キャンパス  2020.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • スマート農業って何!情報科学を利用して新たな農業をつくる

    筑前高校  2019.11

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • スマート農業によるソリューション

    第2回福岡市スマート農業推進事業ワークショップ  福岡市  2019.7

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • ICTを用いたイチゴの省エネ栽培・収量予測技術の開発

    JAISAスマートアグリシンポジウム  東京  2019.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • スマート農業によるソリューション

    福岡市スマート農業推進事業ワークショップ  福岡市  2019.5

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 中・小規模施設園芸のためのスマート農業技術

    JA  福岡市  2019.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 農工の連携で変わる・変える農業の未来

    大分工業高等専門学校  2018.12

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • イチゴの省エネ栽培と収量予測による販売力・国際競争力の強化

    アグリビジネス創出フェア2018  東京  2018.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • Society5.0時代の農業を考える

    「九州大学学術研究都市」セミナーin東京2018  東京  2018.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • Society 5.0で農業はどのように変わるのか?

    平成30年度九州沖縄農業試験研究推進会議  別府市  2018.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 中小規模農家で使えるスマート農業のしくみを考える

    久留米市農業振興協議会  久留米市  2018.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • スマホが日本農業を変える!農学と情報科学を組み合わせた新たな技術を考える

    糸島市  2017.11

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • Community-based approaches by ICT-using farmers towards 2050s

    AASSA (The Association of Academies and Societies of Sciences in Asia) Regional Workshop -Role of Science for Inclusive Society  Tokyo  2017.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 中小規模農業で使えるICTを考える

    第21回テクノフェスタ?農と食のスマート化に向けた新たな取組み・新技術?  さいたま市  2016.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • IoTによる農業情報の収集とその利用

    農業IoTセミナー  福岡市  2016.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 担い手向けの農業ICTを考える

    第2回農政課題解決力向上研修  広島市  2016.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2016.12

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • IoTによる農業情報のセンシングとその利用

    農業×計測×情報通信ワークショップ2016  名古屋市  2016.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • スマート農業の今後を考える

    ベンチャー支援ネットワークSAM  福岡市  2016.10

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • IoTとスマートセンサによる農業情報の見える化とその利用

    「センサ・マイクロマシンと応用システム」シンポジウム  平戸市  2016.10

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • ICTを活用した農業生産とその可能性

    平成28年度第 1回植物工場研修会(太陽光利用型植物工場における環境制御技術)  久留米市  2016.10

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • Introduction of ICT applications for small and mid-scale farmers in Japan

    Conference on State-of-the-Art Technology to Drive Agriculture Productivity in the Next Quarter of the Century  Tokyo  2016.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 北野町で取り組んでいるICTの課題と今後について

    第4回三井地区農業振興協議会野菜部会  久留米市  2016.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 農業分野におけるIoTの取り組みとその課題

    ABC 2016 Spring  東京  2016.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 「ICTって農業に役立つの?」をみんなで考える

    平成27年度福岡県青年農業士会経営研究会  福岡市  2016.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • ICTがもたらす新しい農業経営のかたち

    北九州地域担い手・産地育成総合支援協議会研修会  北九州市  2016.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 中小規模農家向けの農業ICTを考える,

    平成27年度近畿中国四国農業試験研究推進会議  福山市  2016.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 欧州農業の調査報告と研究内容紹介

    食料生産とICTを考える協議会  鳥栖市  2015.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 世界の農業の動きとICTの活用

    農業食料工学会九州支部若手交流会2015  霧島市  2015.8

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • ドイツ・オランダの先端的農業施設の視察報告

    アグリコラボいとしま講演会「地域で広がるスマート農業の現状と今後の展望~情報が農業の未来を創る~」  福岡市  2015.5

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • ICTで農業をもっと面白くしたい!

    Future Sync vol.5  福岡市  2015.5

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2015.3

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 圃場環境モニタリング装置の計測結果と 作物生育状態の可視化手法の提案

    三井地区農業振興協議会野菜部会  久留米市  2015.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 生産から消費までを繋ぐ情報の架け橋~ICTは何をもたらすか?~

    平成26年度日本技術士会九州本部第2回CPD  福岡市  2014.7

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • ICTがクールな農業を創造する

    Future Sync vol.4  福岡市  2014.7

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • ArduinoとSNSを活用した 次世代施設園芸生産支援システム

    UECS研究会セミナー  宮崎市  2014.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2014.3

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 2つのSNSを用いた農業の新展開

    ハイレベル先進技術セミナー  福岡市  2014.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • スマートフォンで行える農作業履歴の管理~データを集めて活かすために~

    三井地区農業振興協議会野菜部会  久留米市  2014.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 農業生産から消費までを繋ぐ情報の架け橋~ICTは農業に何をもたらすか?~

    日本技術士会九州本部みどり部会  筑紫野市  2014.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 「農業の情報化を考える」 IT融合化講演会2013 in Nagasaki~IT融合化による農業の近代化~

    長崎県IT融合化推進協議会(ES-Nagasaki)  長崎市  2013.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 九州での農業IT(農業SNSプロジェクト)の取り組み、人材育成

    株式会社SJC 仙台市  仙台市  2013.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 農業のIT化・人材育成セミナー

    九州経済産業局,人吉市,中小企業基盤整備機構九州本部  中小企業大学校人吉校  2013.7

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    Type:Seminar, workshop

    農業は,我が国の経済再生の一翼を担う分野ですが,生産者の減少や高齢化の進展など,構造的な問題を抱えています.また,九州には,世界を惹きつける高品質な農産物があり,「九州ブランド」ともいうべき価値が存在していますが,農業の競争力強化の観点から,IT技術の活用や人材の育成が重要です.本セミナーでは,農業分野におけるIT技術の活用,農家・流通業者・消費者をつなぐネットワーク形成,IT技術やマーケティングに精通した人材の育成などについて,各発表者からその事例紹介を行い,農業のIT化・人材育成に,積極的に取り組む事業者の皆様を応援します.

  • ITで農業を変える!

    麻生情報ビジネス専門学校  2013.7

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 「センサ・ネットワーク・システムと農業の見える化」 現在,一般農家を対象に実証実験中の情報化農業支援システムについての紹介等

    福岡県農林水産部経営技術支援課  福岡市中央区  2013.6

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    Type:Seminar, workshop

  • 地域企業連携ネットワークシンポジウム「農業IT化の現場の取組」

    人吉市、中小企業基盤整備機構、九州経済産業局  中小企業大学校人吉校  2013.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

     厳しい経済情勢、進む地域の疲弊の中で、地域企業は、独自の努力や展開を行うのはもちろん、他の企業や機関との連携を更に密にして、いろいろな場面に適応できるネットワーク体制を構築することが重要です。
     本シンポジウムの開催地、人吉には、中小企業大学校があり人材育成の拠点となっており、この拠点を核として地域企業のネットワークを構築し、企業支援のためのプラットフォームづくりをすることは、今後の地域企業振興の一つの方向性になると考えられます。
     本シンポジウムでは、企業連携の全国的パイオニア、ファイブネット等の広域企業連携の中心人物、国の各種の審議会の委員も多数つとめる、東成エレクトロビームの上野会長に基調講演をしていただき、また、複数の農家との共同で、産学連携と農商工連携を推進する九州大学の岡安准教授に、現場の取り組みについて報告していただきます。その後、講演者、報告者、現地報告者及び専門家、その他の参加者間の自由な意見交換により、参加者の理解を深めていくシンポジウムです。

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2013.3

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 第3回農業SNSセミナー

    財)九州先端科学技術研究所  2013.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 農業とIT の事業者マッチングフォーラム

    財)九州ヒューマンメディア創造センター  福岡市  2013.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第2回農業SNSセミナー

    財)九州先端科学技術研究所  2012.12

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    Type:Seminar, workshop

  • 新しい農業の紹介

    西南小学校  2012.12

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 第1回農業SNSセミナー

    財)九州先端科学技術研究所  2012.9

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    Type:Seminar, workshop

  • 農業のIT利活用セミナーのご案内『農業の情報化に向けて今なにができるのか』

    大分県 財団法人ハイパーネットワーク社会研究所  大分県  2012.2

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    Type:Seminar, workshop

  • 農業のIT活用研究会

    大分県 財団法人ハイパーネットワーク社会研究所  大分県  2012.1

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • 農産物のブランド化をめざす情報通信技術の活用

    アグリコラボいとしま  糸島市  2011.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • クラウドコンピューティングの広がり:農業

    熊本ソフトウェア株式会社・財団法人九州先端科学技術研究所(ISIT)  2011.10

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 第44回ハイパーネットワーク社会研究会 農業情報化ケーススタディ発表会

    ハイパーネットワーク社会研究所  大分県  2011.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • 農産物の品質管理は圃場から -仙寿菜生産における試み-

    美濃市役所  美濃市  2011.3

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2011.3

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 題目:第1回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2010.11

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 農業の情報化で何が変わる?何を変える?

    岐阜県美濃市  美濃市  2010.4

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    Type:Lecture

  • 第62回ハイパーフォーラム『農業へのIT活用を考える』~継続的かつ安定的営農を目指して~ 「農業の情報化と安全・安心の推進」~ITを活用した農業生産システムの高度化について~

    ハイパーネットワーク社会研究所  2010.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 第10回OPACK交流会 『農業の情報化と安全・安心』~農業生産システムの高度化のためのICTの利用について~

    九大学研都市推進機構  2009.12

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 「農業のお悩み、九大農学部がドーンと受け止めます!3」

    主催:九州大学大学院農学研究院  JA糸島本本所  2009.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 題目:第2回西区子ども体験学習 内容:福岡市西区在住の小・中学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小・中学校  2009.8

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 題目:第1回西区子ども体験学習 内容:福岡市西区在住の小学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小学校  2009.5

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 糸島現代GPシンポジウム ドーンと農・食・環境のまちづくり −九州大学・地域協働の発信−

    主催: 九州大学 共催: 福岡市、前原市、二丈町、志摩町 後援: 西日本新聞、糸島新聞、JA福岡,JA糸島,(財)九州大学学術都市推進機構,福岡県福岡地域農業改良普及センター  九州大学伊都キャンパス西講義棟  2008.12

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    Type:Seminar, workshop

  • 新開発ロータリでジャンボタニシ(スクミリンゴ貝)の食害を減らす

    主催:九州大学大学院農学研究院生物生産工学分野,糸島現代GP 共催:九州バイオリサーチネット  九州大学箱崎キャンパス国際ホール  2008.11

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 題目:西区小学生体験授業プログラム 内容:福岡市西区在住の小学生を対象にした福岡市近郊農業体験実習 (糸島現代GP事業:http://itoshima-gp.bpes.kyushu-u.ac.jp/)

    福岡市西区管内の小学校  2008.11

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 「農業のお悩み、九大農学部がドーンと受け止めます!2」

    主催:九州大学大学院農学研究院  九州大学伊都キャンパス「BIG ORANGE」  2008.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 糸島現代GPシンポジウム 糸島の緑が九大生をドーンと育てます。 −ともに地域農業の未来を創造する−

    主催: 九州大学 共催: 福岡市、前原市、二丈町、志摩町 後援: 西日本新聞、糸島新聞、JA糸島  前原市隣保館  2008.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 福岡県糟屋郡と福岡県糸島地域において農地環境情報のインターネット配信を行い,営農への利活用を図っている.

    2008

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    福岡県糟屋郡と福岡県糸島地域において農地環境情報のインターネット配信を行い,営農への利活用を図っている.

  • 糸島現代GP第1回ワークショップ  糸島地域農業の明日と九大との連携を考える! 糸島まるごと農学校 「宝 さがしワークショップ」

    九州大学大学院農学研究院  九州大学伊都キャンパス「BIG ORANGE」  2007.11

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    Type:Seminar, workshop

  • 大学発ブランドグッズシンポジウム

    主催 九州大学大学院農学研究院環境科学系研究者グループ 九州大学 共催 (財)九州大学学術研究都市推進機構  九州大学箱崎キャンパス50周年記念講堂  2007.5

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    Type:Lecture

  • 「農業のお悩み、九大農学部がドーンと受け止めます!」

    主催 九州大学農学部環境系グループ 共催 (財)九州大学学術研究都市推進機構 後援 NPOアカデミック伊都  九大伊都キャンパス ビッグオレンジ  2007.2

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 一般に難解と受け止められている弾塑性力学を極力分かり易く解説するとともに,その演習を通して参加者の皆さんが構成式の具体的特性を明確に把握できるようにした.さらに,近年,地盤工学分野でも広く活用されつつある有限要素法について,その基本概念,弾塑性構成式を導入した非線形有限要素法(土−水連成解析も含む)の解法および活用法を平易に解説した後,参加者が各自持参のノートパソコンを使って実際に演習を行って,FEM 解析のより有効な利用法を学んだ.

    地盤工学会九州支部  福岡(九州大学西新プラザ)  2005.9

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

  • 進化するスマート農業

    QBファンド 第9回技術交流会  ウェビナー 

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

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Media Coverage

  • 福岡市西区今津に自社研究農場「welzo研究農場」完成 Newspaper, magazine

    西日本新聞  2022.11

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    福岡市西区今津に自社研究農場「welzo研究農場」完成

  • 大学圃場からライブ配信・第1回オンラインセミナー開催(農業情報学会) Newspaper, magazine

    農業機械新聞  2021.12

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    大学圃場からライブ配信・第1回オンラインセミナー開催(農業情報学会)

  • 農業の省力化実践的に学ぶー来月から九州大などー Newspaper, magazine

    西日本新聞  2021.6

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    農業の省力化実践的に学ぶー来月から九州大などー

  • 九州大学における スマート農業の取り組み Newspaper, magazine

    スマート農業360  2019.9

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    九州大学における スマート農業の取り組み

  • キヤノン版スマート農業 Newspaper, magazine

    日本経済新聞社  2017.8

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    キヤノン版スマート農業

  • AI農業 効率経営の芽 ゲームチェンジ 技術が拓く未来(上) Newspaper, magazine

    日経新聞  2017.3

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    AI農業 効率経営の芽 ゲームチェンジ 技術が拓く未来(上)

  • ネットワークカメラと画像解析技術で農業の生産性向上を支援

    キヤノンMJhttp://cweb.canon.jp/csr/bwc-portal/social/2016-11.html)  2016.11

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    ネットワークカメラと画像解析技術で農業の生産性向上を支援

  • 可能性は無限大 究極のデジタル革命 IoTが切り拓く未来とは!? TV or radio program

    ぐっ!ジョブ 九州ゲンキ主義経済(TVQ) http://www.tvq.co.jp/o_j/goodjob/archive/detail.html?id=20161105  2016.11

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    可能性は無限大 究極のデジタル革命 IoTが切り拓く未来とは!?

  • 農業の光と影 ITが負担軽減の一手に TV or radio program

    「今日感ニュース」(RKB)http://rkb.jp/news/news/35024/  2016.10

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    農業の光と影 ITが負担軽減の一手に

  • スマート農業の流れと新しいセンシング技術開発の取り組み

    キヤノンITソリューションズ株式会社HP・https://www.canon-its.co.jp/case/detail/cloud_aws05.html  2016.10

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    スマート農業の流れと新しいセンシング技術開発の取り組み

  • 大分県×農業ソリューション 経験則をデータ化し,農家の収益力に貢献できるのか?

    Canon Frontline  2016.7

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    大分県×農業ソリューション 経験則をデータ化し,農家の収益力に貢献できるのか?

  • 画像で収量予測高精度ー成熟状態を自動判別ー Newspaper, magazine

    日刊工業新聞  2016.7

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    画像で収量予測高精度ー成熟状態を自動判別ー

  • JAXA・九州大学などが「みちびき」対応のドローンで農業利用を共同研究

    内閣府宇宙戦略室 http://qzss.go.jp/news/archive/jaxa_150608.html  2015.6

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    JAXA・九州大学などが「みちびき」対応のドローンで農業利用を共同研究

  • アグリコラボいとしま 先駆的な農業を紹介 Newspaper, magazine

    糸島新聞  2015.6

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    アグリコラボいとしま 先駆的な農業を紹介

  • ドローン 生育調査 農薬散布 農業利用へ 操縦自動化めざす JAXAなど研究着手 Newspaper, magazine

    日本農業新聞  2015.5

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    ドローン 生育調査 農薬散布 農業利用へ 操縦自動化めざす JAXAなど研究着手

  • トマトソース作り体験 Newspaper, magazine

    糸島新聞  2015.4

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    トマトソース作り体験

  • 日英ワークショップ開催-鉄道軌道メンテで- Newspaper, magazine

    交通新聞  2014.11

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    日英ワークショップ開催-鉄道軌道メンテで-

  • 有機栽培デジタル化-バングラで九大が支援- Newspaper, magazine

    日本農業新聞  2014.5

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    有機栽培デジタル化-バングラで九大が支援-

  • 礫耕トマト児童は興味津々 Newspaper, magazine

    読売新聞福岡西かわらばん  2014.3

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    礫耕トマト児童は興味津々

  • 1次産業 未来に駆ける -脱農協 直接届ける- Newspaper, magazine

    日本経済新聞  2013.12

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    1次産業 未来に駆ける -脱農協 直接届ける-

  • 農業IT活用例に学ぶ!他業種への展開と可能性 -【第4回】農家×大学×支援機関によるIT活用事例

    中小企業ITコラム@キーマンズネット  2013.7

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    農業IT活用例に学ぶ!他業種への展開と可能性 -【第4回】農家×大学×支援機関によるIT活用事例

  • スマート農業九州に芽 Newspaper, magazine

    朝日新聞  2013.7

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    スマート農業九州に芽

  • 農業IT活用例に学ぶ!他業種への展開と可能性 -【第5回】スマホが「仕事で使える道具」になる工夫

    中小企業ITコラム@キーマンズネット  2013.7

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    農業IT活用例に学ぶ!他業種への展開と可能性 -【第5回】スマホが「仕事で使える道具」になる工夫

  • 農業IT活用例に学ぶ!他業種への展開と可能性 -【第1回】7割がPC所有も…農業のIT化は進んでいるか-

    中小企業ITコラム@キーマンズネット  2013.6

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    農業IT活用例に学ぶ!他業種への展開と可能性 -【第1回】7割がPC所有も…農業のIT化は進んでいるか-

  • 農業IT活用例に学ぶ!他業種への展開と可能性 -【第3回】スマホでの栽培管理も日常化?

    中小企業ITコラム@キーマンズネット  2013.6

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    農業IT活用例に学ぶ!他業種への展開と可能性 -【第3回】スマホでの栽培管理も日常化?

  • 6次化への担い手増を -大学生記者が追う 地域農業を支える人たち21- Newspaper, magazine

    日本農業新聞  2013.4

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    6次化への担い手増を -大学生記者が追う 地域農業を支える人たち21-

  • スマホで畑管理/SNS連動 手元に最新データ Newspaper, magazine

    毎日新聞  2013.2

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    スマホで畑管理/SNS連動 手元に最新データ

  • 2つの“SNS“を使い農家、消費者、流通業者が交流 Newspaper, magazine

    熊本日日新聞(電子版)  2013.2

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    2つの“SNS“を使い農家、消費者、流通業者が交流

  • 圃場・生消ネットでつなぐ Newspaper, magazine

    日本農業新聞  2013.1

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    圃場・生消ネットでつなぐ

  • 農業IT化で激突 人材育成の富士通,新型センサーで挑むNEC Newspaper, magazine

    日本経済新聞  2012.4

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    農業IT化で激突 人材育成の富士通,新型センサーで挑むNEC

  • イチゴ2.3ヘクタール1億円目標 -IT活用し省力かん水- Newspaper, magazine

    日本農業新聞  2012.3

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    イチゴ2.3ヘクタール1億円目標 -IT活用し省力かん水-

  • 農業のIT活用研究会 Newspaper, magazine

    -ハイパーフラッシュ(50号)  2012.3

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    農業のIT活用研究会

  • 農業にIT導入を -データで管理,課題は費用対効果の検討- Newspaper, magazine

    大分合同新聞  2012.2

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    農業にIT導入を -データで管理,課題は費用対効果の検討-

  • 大分県内における農業へのIT技術活用事例。蓄積データを基に栽培技術のマニュアル化・経営情報も把握 -<アクトいちごファーム、衛藤産業など>- Newspaper, magazine

    イノプレックス  2012.2

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    大分県内における農業へのIT技術活用事例。蓄積データを基に栽培技術のマニュアル化・経営情報も把握 -<アクトいちごファーム、衛藤産業など>-

  • ブランド化へ情報活用 -福岡・アグリコラボいとしま新技術を紹介- Newspaper, magazine

    日本農業新聞  2011.12

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    ブランド化へ情報活用 -福岡・アグリコラボいとしま新技術を紹介-

  • 九大と鹿島市が連携協定締結へ Newspaper, magazine

    西日本新聞Web版  2011.9

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    九大と鹿島市が連携協定締結へ

  • 農家の知恵ITで磨き -九州の大学が導入支援- Newspaper, magazine

    日本経済新聞  2011.1

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    農家の知恵ITで磨き -九州の大学が導入支援-

  • 大学「新」潮流−開発した夏野菜を農家に紹介商標使用を許諾,販売も支援 Newspaper, magazine

    日経グローカル  2010.9

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    大学「新」潮流−開発した夏野菜を農家に紹介商標使用を許諾,販売も支援

  • 産学官が活性策検討−アグリコラボいとしま総会-稲作技術など報告 Newspaper, magazine

    日本農業新聞  2010.8

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    産学官が活性策検討−アグリコラボいとしま総会-稲作技術など報告

  • 情報化農業構築へ Newspaper, magazine

    毎日新聞  2010.8

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    情報化農業構築へ

  • 「情報化農業」を提案・福岡県糸島地域 Newspaper, magazine

    日本農業新聞  2010.6

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    「情報化農業」を提案・福岡県糸島地域

  • 糸島の農業活性化へ連携 Newspaper, magazine

    西日本新聞  2010.3

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    糸島の農業活性化へ連携

  • 独自気象観測を充実/福岡・JA粕屋 Newspaper, magazine

    日本農業新聞  2009.6

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    独自気象観測を充実/福岡・JA粕屋

  • 農地モニタリングシステムをJA粕屋で営農利用 Newspaper, magazine

    日本農業新聞  2008.9

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    農地モニタリングシステムをJA粕屋で営農利用

  • 九大が農村留学試行 Newspaper, magazine

    糸島新聞  2008.9

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    九大が農村留学試行

  • 北崎地区の住民と九州大学からの専門家約50名が、特産の牡蠣を囲み意見交換を行った Newspaper, magazine

    西日本新聞  2008.4

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    北崎地区の住民と九州大学からの専門家約50名が、特産の牡蠣を囲み意見交換を行った

  • 糸島を資源循環型社会へ Newspaper, magazine

    糸島新聞  2008.3

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    糸島を資源循環型社会へ

  • 糸島現代GPが農家で体験教育をスタート Newspaper, magazine

    日本経済新聞  2008.3

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    糸島現代GPが農家で体験教育をスタート

  • シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」 TV or radio program

    RKB  2007.5

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    シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」

  • シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」 Newspaper, magazine

    日刊工業新聞  2007.5

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    シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」

  • シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」 Newspaper, magazine

    西日本新聞  2007.5

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    シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」

  • シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」 Newspaper, magazine

    読売新聞  2007.4

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    シンポジウム「すごい!大学ブランドグッズ−大学発・環境ブランド化への挑戦−」

  • 九州大学伊都キャンパス・農学研究院分室の紹介,環境科学系若手研究者グループの紹介等 Newspaper, magazine

    糸島新聞  2007.4

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    九州大学伊都キャンパス・農学研究院分室の紹介,環境科学系若手研究者グループの紹介等

  • 産学連携による”農業機械学”の創成 Newspaper, magazine

    農機新聞  2006.5

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    産学連携による”農業機械学”の創成

  • ワークショップ「農業のお悩み、九大農学部がドーンと受け止めます!」 Newspaper, magazine

    糸島新聞  2003.3

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    ワークショップ「農業のお悩み、九大農学部がドーンと受け止めます!」

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Activities contributing to policy formation, academic promotion, etc.

  • 2023.4 - 2024.3   スマート農業推進協議会

    スマート農業の普及等に関する助言

  • 2023.4 - 2024.3   福岡県農業DX推進協議会

    スマート農業の普及等に関する助言

  • 2021.4 - 2023.1   農林業振興審議会

    福岡市の農業政策に関する助言

  • 2019.4 - 2022.3   福岡県スマート農業推進協議会

    スマート農業の普及等に関する助言

  • 2017.3 - 2022.3   独立行政法人国際協力機構

    ベトナム国「カントー大学強化附帯プロジェクト」専門部会・専門部門員(環境)として従事

  • 2016.3 - 2017.3   独立行政法人国際協力機構

    ベトナム国「カントー大学強化附帯プロジェクト」専門部会・専門部門員(環境)として従事

  • 2014.4 - 2017.3   公益財団法人・九州先端科学技術研究所

    農業情報学の専門家の立場から農業SNSプロジェクト関連技術研究開発に参加・助言・指導

  • 2010.9 - 2011.3   財団法人 九州地域産業活性化センター

    九州広域地域産業活性化基本計画の素案となる平成22年度半導体(エレクトロニクスを含む)・IT産業振興ビジョンを策定する.

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Educational Activities for Highly-Specialized Professionals in Other Countries

  • 2019.12   イノベイティブアジア短期プログラム

    Main countries of student/trainee affiliation:Thailand

  • 2018.11   JICA集団研修「バイオマスの活用による持続可能な地域開発」

    Main countries of student/trainee affiliation:Other

    Other countries of student/trainee affiliation:不特定

  • 2017.11   APO Conference on Smart Agriculture for Sustainable, Inclusive Productivity

    Main countries of student/trainee affiliation:Other

    Other countries of student/trainee affiliation:不特定

  • 2017.9 - 2018.9   JICA集団研修「バイオマスの活用による持続可能な地域開発」

    Main countries of student/trainee affiliation:Other

    Other countries of student/trainee affiliation:不特定

  • 2016.11   JICA集団研修「バイオマスの活用による持続可能な地域開発」

    Main countries of student/trainee affiliation:Other

    Other countries of student/trainee affiliation:不特定

  • 2016.6   APO Conference on State-of-the Art Technologies to Drive Agricultural Productivity in the Next Quarter of the Century

    Main countries of student/trainee affiliation:Other

    Other countries of student/trainee affiliation:不特定

  • 2013.2   日本のIT農業の現状紹介とIT農業の実証実験圃場の見学

    Main countries of student/trainee affiliation:Egypt

    Other countries of student/trainee affiliation:エジプト日本科学技術大学(EJUST大学)

  • 2011.2   The ICT Workshop on e-Governance for Bangladesh

    Main countries of student/trainee affiliation:Bangladesh

    Other countries of student/trainee affiliation:バングラデシュにおいて、e-Governanceの推進に関与している関係省庁の上級,管理者・実務担当者、ICT企業関係者ならびにグラミン銀行関係者

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Acceptance of Foreign Researchers, etc.

  • ソウル大学

    Acceptance period: 2024.5 - 2025.3   (Period):1 month or more

    Nationality:Korea, Republic of

  • シレット農業大学

    Acceptance period: 2024.4 - 2025.3   (Period):1 month or more

    Nationality:Bangladesh

    Business entity:Ministry of education

  • シレット農業大学

    Acceptance period: 2023.4 - 2024.3   (Period):1 month or more

    Nationality:Bangladesh

    Business entity:Ministry of education

  • シレット農業大学

    Acceptance period: 2023.3   (Period):1 month or more

    Nationality:Bangladesh

    Business entity:Ministry of education

  • ポーランド科学アカデミー基礎工学研究所

    Acceptance period: 2006.1 - 2006.2   (Period):1 month or more

    Nationality:Poland

    Business entity:On-campus funds

  • ポーランド科学アカデミー基礎工学研究所

    Acceptance period: 2005.1 - 2005.3   (Period):1 month or more

    Nationality:Poland

    Business entity:On-campus funds

  • ポーランド科学アカデミー基礎工学研究所

    Acceptance period: 2003.11 - 2004.3   (Period):1 month or more

    Nationality:Poland

    Business entity:On-campus funds

  • ルール大学土木工学科

    Acceptance period: 2003.6 - 2003.10   (Period):1 month or more

    Nationality:Germany

    Business entity:On-campus funds

  • アテネ工科大学地盤材料研究室

    Acceptance period: 2002.10 - 2003.2   (Period):1 month or more

    Nationality:Greece

    Business entity:On-campus funds

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Travel Abroad

  • 2023.11

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Gyeongsang National University

    Staying institution name 2:Hidden Bay Hotel

  • 2023.9

    Staying countory name 1:Korea, Republic of   Staying institution name 1:ソウル大学

  • 2022.11

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:-

  • 2020.2

    Staying countory name 1:Thailand   Staying institution name 1:キングモンクット工科大学

  • 2019.11

    Staying countory name 1:New Zealand   Staying institution name 1:マッセー大学

  • 2019.10

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:逢甲大学

  • 2019.9

    Staying countory name 1:Spain   Staying institution name 1:Meliá Sitges Hotel

  • 2019.8

    Staying countory name 1:Thailand   Staying institution name 1:コンケン大学

    Staying countory name 2:Thailand   Staying institution name 2:キングモンクット工科大学

    Staying countory name 3:Thailand   Staying institution name 3:カセサート大学

  • 2018.12

    Staying countory name 1:Cambodia   Staying institution name 1:カンボジア王立農業大学

  • 2018.5

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Jeju KAL Hotel

  • 2018.3

    Staying countory name 1:United States   Staying institution name 1:University of California, Davis

  • 2017.12

    Staying countory name 1:Australia   Staying institution name 1:Macquarie University

  • 2017.10

    Staying countory name 1:Indonesia   Staying institution name 1:Universitas Gadjah Mada

  • 2017.10

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:台湾大学

  • 2017.3

    Staying countory name 1:United States   Staying institution name 1:University of California, Davis

  • 2016.11

    Staying countory name 1:Australia   Staying institution name 1:University of New South Wales

    Staying countory name 2:Australia   Staying institution name 2:Queensland University of Technology

  • 2016.11

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:台湾大学

  • 2016.3

    Staying countory name 1:Korea, Republic of   Staying institution name 1:忠南大学(Chungbuk National University)

  • 2016.3

    Staying countory name 1:China   Staying institution name 1:Swan Lakeview Hotel

  • 2016.2

    Staying countory name 1:Bangladesh   Staying institution name 1:-

  • 2015.11

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:National Taiwan University

  • 2015.10

    Staying countory name 1:Italy   Staying institution name 1:-

    Staying countory name 2:Germany  

  • 2015.9

    Staying countory name 1:Bangladesh   Staying institution name 1:-

  • 2015.3

    Staying countory name 1:United States   Staying institution name 1:University of Hawaii, Manowa

  • 2015.3

    Staying countory name 1:United States   Staying institution name 1:University of Hawaii, Manowa

  • 2015.2

    Staying countory name 1:Germany   Staying institution name 1:Forschungszentrum Jülich

  • 2015.2

    Staying countory name 1:Netherlands   Staying institution name 1:Wageningen UR

  • 2014.11

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Chunnam University

  • 2014.10

    Staying countory name 1:United Kingdom   Staying institution name 1:Watt University

  • 2014.9

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Soul National University

  • 2014.5

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:National Ilan University

  • 2014.4

    Staying countory name 1:Viet Nam   Staying institution name 1:Can Tho University

  • 2014.3

    Staying countory name 1:United States   Staying institution name 1:University of Hawaii, Manowa

  • 2013.12

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Kintex

  • 2013.8

    Staying countory name 1:Indonesia   Staying institution name 1:Universitas Gadjah Mada

  • 2013.5

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Chonbuk National University

  • 2013.3

    Staying countory name 1:United States   Staying institution name 1:University of California, Davis campus

  • 2012.9

    Staying countory name 1:Indonesia   Staying institution name 1:Grand Quality Hotel Yogyakarta

  • 2012.9

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:National Training Institute of Farmers’ Organizations

  • 2012.7 - 2012.8

    Staying countory name 1:Germany   Staying institution name 1:ホーエンハイム大学

  • 2012.7

    Staying countory name 1:Spain   Staying institution name 1:Valencia Conference Center

  • 2011.10

    Staying countory name 1:Korea, Republic of   Staying institution name 1:ソウル教育文化会館

  • 2011.8

    Staying countory name 1:United States   Staying institution name 1:Galt House Hotel, Louisville, Kentucky

  • 2011.5

    Staying countory name 1:China   Staying institution name 1:Cityview Hotel, Kowloon, Hong Kong

  • 2009.11

    Staying countory name 1:Korea, Republic of   Staying institution name 1:忠南大学(Chungbuk National University)

  • 2009.8 - 2009.9

    Staying countory name 1:United States   Staying institution name 1:UC-Davis

  • 2009.6

    Staying countory name 1:Turkey   Staying institution name 1:Surmeri Hotel

  • 2009.3

    Staying countory name 1:Korea, Republic of   Staying institution name 1:忠南大学(Chungbuk National University)

    Staying institution name 2:忠北大学(Chungbuk National University)

    Staying institution name 3:慶北大学(Kyungpook National University)

  • 2008.11

    Staying countory name 1:Germany   Staying institution name 1:-

  • 2008.5

    Staying countory name 1:China   Staying institution name 1:National Chung Hsing University

  • 2008.1

    Staying countory name 1:United States   Staying institution name 1:-

  • 2008.1

    Staying countory name 1:United States   Staying institution name 1:-

  • 2007.12

    Staying countory name 1:Viet Nam   Staying institution name 1:Hoa Binh Hotel

  • 2007.12

    Staying countory name 1:Germany   Staying institution name 1:-

  • 2007.12

    Staying countory name 1:China   Staying institution name 1:台湾大学

  • 2007.12

    Staying countory name 1:Viet Nam   Staying institution name 1:Nong Lam University

  • 2007.12

    Staying countory name 1:Germany   Staying institution name 1:-

  • 2007.12

    Staying countory name 1:China   Staying institution name 1:台湾大学

  • 2007.12

    Staying countory name 1:Viet Nam   Staying institution name 1:Nong Lam University

  • 2006.7

    Staying countory name 1:Canada   Staying institution name 1:-

  • 2006.7

    Staying countory name 1:Canada   Staying institution name 1:-

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