Updated on 2024/10/07

Information

 

写真a

 
MORI FUMITO
 
Organization
Faculty of Agriculture Department of Bioresource Sciences Associate Professor
Title
Associate Professor
External link

Degree

  • PhD

Research Interests・Research Keywords

  • Research theme:Information flows in complex networks, Period variability of noisy oscillations

    Keyword:Complex networks, Information flows, Biological rhythms, Synchronization

    Research period: 2019.4

Papers

  • Information-transfer characteristics in network motifs

    Fumito Mori, Takashi Okada

    Physical Review Research   2023.1

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

    DOI: 10.1103/PhysRevResearch.5.013037

  • Noninvasive inference methods for interaction and noise intensities of coupled oscillators using only spike time data Reviewed

    Fumito Mori, Hiroshi Kori

    Proceedings of the National Academy of Sciences   119 ( 6 )   e2113620119 - e2113620119   2022.2

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

    DOI: 10.1073/pnas.2113620119

  • Diagrammatic expansion of information flows in stochastic Boolean networks Reviewed

    Fumito Mori, Takashi Okada

    Physical Review Research   2 ( 4 )   2020.12

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

    DOI: 10.1103/physrevresearch.2.043432

  • Expected Number of Fixed Points in Boolean Networks with Arbitrary Topology Reviewed

    Fumito Mori, Atsushi Mochizuki

    PHYSICAL REVIEW LETTERS   119 ( 2 )   2017.7

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

    DOI: 10.1103/PhysRevLett.119.028301

  • Necessary Condition for Frequency Synchronization in Network Structures Reviewed

    Fumito Mori

    PHYSICAL REVIEW LETTERS   104 ( 10 )   2010.3

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

    DOI: 10.1103/PhysRevLett.104.108701

  • Maximisation of synchronisability under low injection power

    Hisa Aki Tanaka, Yoji Yabe, Somei Suga, Akira Keida, Kai Maeda, Fumito Mori, Hiroo Sekiya

    EPL   146 ( 5 )   2024.6   ISSN:0295-5075 eISSN:1286-4854

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    Publishing type:Research paper (scientific journal)  

    Synchronisability of limit cycle oscillators has been measured by the width of the synchronous frequency band, known as the Arnold tongue, concerning external forcing. We clarify a fundamental limit on maximizing this synchronisability within a specified extra low power budget, which underlies an important and ubiquitous problem in nonlinear science related to an efficient synchronisation of weakly forced nonlinear oscillators. In this letter, injection-locked Class-E oscillators are considered as a practical case study, and we systematically analyse their power consumption; our observations demonstrate the independence of power consumption in the oscillator from power consumption in the injection circuit and verify the dependency of power consumption in the oscillator solely on its oscillation frequency. These systematic observations, followed by the mathematical optimisation establish the existence of a fundamental limit on synchronisability, validated through systematic circuit simulations. The results offer insights into the energetics of synchronisation for a specific class of injection-locked oscillators.

    DOI: 10.1209/0295-5075/ad4414

    Web of Science

    Scopus

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  • Enhanced precision of circadian rhythm by output system Reviewed

    Hotaka Kaji, Fumito Mori, Hiroshi Ito

    Journal of Theoretical Biology   574   111621 - 111621   2023.10

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

    DOI: 10.1016/j.jtbi.2023.111621

  • Root PRR7 improves the accuracy of the shoot circadian clock through nutrient transport

    Kyohei Uemoto, Fumito Mori, Shota Yamauchi, Akane Kubota, Nozomu Takahashi, Haruki Egashira, Yumi Kunimoto, Takashi Araki, Atsushi Takemiya, Hiroshi Ito, Motomu Endo

    Plant and Cell Physiology   2023.1

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

    DOI: 10.1093/pcp/pcad003

  • Locking Range Maximization in Injection-Locked Class-E Oscillator—A Case Study for Optimizing Synchronizability Reviewed

    67 ( 5 )   1762 - 1774   2020.1

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

    We propose a method for designing optimal external forcings of injection-locked oscillators. This method enables to maximize the locking range of general injection-locked oscillators under certain practical constraints that encompass the power, magnitude, or area of forcing waveforms. Here, as a case study, we focus on a class-E oscillator in the injection-locked mode, for which we obtain the following systematic results. First, by using the proposed method, the optimal waveform of external forcings is obtained analytically under three different constraints, i.e., the power-(i.e., root mean square-) reduced, magnitude-reduced, and area-reduced constraints. Second, through systematic circuit simulations, those predicted optimal forcings are verified to outperform any other forcings. Third, circuits experiments confirm that the theoretical predictions and the circuit simulation results are correct and consistent, regarding lock range maximization. These findings result in a first demonstration of locking range maximization for practical electrical oscillators.

    DOI: 10.1109/tcsi.2019.2960847

  • Synchronization of three electrochemical oscillators From local to global coupling Reviewed

    Chaos   28 ( 4 )   2018.4

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

    DOI: 10.1063/1.5012520

  • Precision of collective oscillations in complex dynamical systems with noise Reviewed International journal

    Fumito Mori, Alexander S. Mikhailov

    PHYSICAL REVIEW E   93 ( 6 )   2016.6

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

    DOI: 10.1103/PhysRevE.93.062206

  • Period variability of coupled noisy oscillators Reviewed

    Fumito Mori, Hiroshi Kori

    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   87 ( 3 )   2013.3

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

    DOI: 10.1103/PhysRevE.87.030901

  • Synchronization of coupled oscillators on small-world networks Reviewed

    Fumito Mori, Takashi Odagaki

    Physica D: Nonlinear Phenomena   238 ( 14 )   1180 - 1185   2009.7

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

    DOI: 10.1016/j.physd.2009.04.002

  • The Laplacian spectra of small-world networks Reviewed

    F Mori, T Odagaki

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 12 )   3294 - 3298   2004.12

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

    DOI: 10.1143/JPSJ.73.3294

  • Percolation analysis of clusters in random graphs Reviewed

    F Mori, T Odagaki

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   70 ( 8 )   2485 - 2489   2001.8

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

    DOI: 10.1143/JPSJ.70.2485

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Presentations

  • 概日時計出力系は時計を正確にし得る

    #梶穂高、@森史、@伊藤浩史

    第29回日本時間生物学会学術大会  2022.12 

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    Event date: 2022.12

    Language:Japanese  

    Venue:宇都宮   Country:Japan  

  • 振動の時刻データを用いた振動子間の結合強度の推定

    森史

    研究集会:データサイエンスにおける統計科学  2022.11 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • Output systems can improve accuracy of biological rhythms International conference

    #Hotaka Kaji, @Fumito Mori, and @Hiroshi Ito

    Conference on complex systems 2022  2022.10 

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    Event date: 2022.10

    Language:English  

    Country:Spain  

  • Graphical expansion of information flows in network motifs International conference

    Fumito Mori

    Conference on complex systems 2022  2022.10 

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    Event date: 2022.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Spain  

  • 概日リズムの出力系のゆらぎ

    梶穂高、森史、伊藤浩史

    第127回日本物理学会九州支部例会  2021.12 

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 同期している振動子間の非対称な結合強度の推定

    森史、岩見貴弘、郡宏、伊藤浩史

    第127回日本物理学会九州支部例会  2021.12 

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Which clock is master? : inference of asymmetric interaction intensities in coupled oscillators

    2021.11 

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    Event date: 2021.11

    Language:Japanese  

    Country:Japan  

  • 振動子間の非対称な結合強度をスパイク時刻データだけから推定する

    森史、岩見貴弘、郡宏、伊藤浩史

    日本物理学会 2021年秋季大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Does synchronization improve precision of biological oscillations?

    2020.9 

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    Event date: 2021.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • ブーリアンネットワークにおける移動エントロピーのダイアグラム展開

    森史, 岡田崇

    日本物理学会第76回年次大会  2021.3 

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    Event date: 2021.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • ブーリアンネットワーク上の情報流をダイアグラムで展開する理論

    森史, 岡田崇

    第126回日本物理学会九州支部例会  2020.12 

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    Event date: 2021.5

    Language:Japanese  

    Country:Japan  

  • Fixed Points and Information Flow in Boolean Networks International conference

    Fumito Mori

    SIAM Conference on Applications of Dynamical Systems  2019.5 

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    Event date: 2019.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • Expected Number of Fixed Points in Boolean Networks with Arbitrary Topology International conference

    Fumito Mori

    Complex networks 2018  2018.12 

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    Event date: 2018.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United Kingdom  

  • ブーリアンネットワークの固定点数の期待値の定理 Invited

    森史

    第23回交通流と自己駆動粒子系のシンポジウム  2017.12 

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    Event date: 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

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MISC

  • Maximization of Injection-Locking Ability under Low Injection Power

    慶田朗, 矢部洋司, 前多夏維, 菅聡明, 森史, 関屋大雄, 田中久陽

    電子情報通信学会論文誌 A(Web)   J107-A ( 3 )   2024   ISSN:1881-0195

  • Inference Methods for Interaction and Noise Intensities Using Only Spike-time Data on Coupled Oscillators

    Fumito Mori, Hiroshi Kori

    2013.8

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    Language:Others  

    Inference Methods for Interaction and Noise Intensities Using Only Spike-time Data on Coupled Oscillators
    We propose theoretical methods to infer coupling strength and noise intensity<br />
    simultaneously through an observation of spike timing in two well-synchronized<br />
    noisy oscillators. A phase oscillator model is applied to derive formulae<br />
    relating each of the parameters to some statistics from spike-time data. Using<br />
    these formulae, each parameter is inferred from a specific set of statistics.<br />
    We demonstrate the methods with the FitzHugh-Nagumo model as well as the phase<br />
    model. Our methods do not require any external perturbation and thus are ready<br />
    for application to various experimental systems.

Professional Memberships

  • The Institute of Electronics, Information and Communication Engineers

  • Japanese Society for Chronobiology

  • Japanese Society for Mathematical Biology

  • The Physical Society of Japan

Research Projects

  • 情報流のパス展開理論と神経ネットワーク活動計測に基づく生物の行動決定機構の解明

    Grant number:22K03453  2022 - 2024

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 複雑ネットワーク上の情報の流れの理論構築と生物の環境適応機構の解明

    2019.4

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    Authorship:Principal investigator 

  • 複雑ネットワーク上の情報の流れの理論構築と生物の環境適応機構の解明

    Grant number:19K03663  2019 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 複雑ネットワーク上の情報の流れの理論構築と生物の環境適応機構の解明

    Grant number:19K03663  2019 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 振動子集団のネットワーク構造と同期ダイナミクスの関係を統一的に記述する理論の構築

    Grant number:11J11148  2011 - 2013

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Grant type:Scientific research funding

  • 振動子集団のネットワーク構造と同期ダイナミクスの関係を統一的に記述する理論の構築

    Grant number:11J11148  2011 - 2013

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

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    Authorship:Principal investigator  Grant type:Scientific research funding

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Class subject

  • 非線形理論

    2022.6 - 2022.8   Summer quarter