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写真a

フジタ アンドレ
藤田 アンドレ
FUJITA ANDRE
所属
生体防御医学研究所 ネットワークAI統計解析共同研究部門 教授
職名
教授

論文

  • Cavity approach for the approximation of spectral density of graphs with heterogeneous structures 査読 国際共著

    Guzman, GEC; Stadler, PF; Fujita, A

    PHYSICAL REVIEW E   109 ( 3 )   034303   2024年3月   ISSN:2470-0045 eISSN:2470-0053

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    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review E  

    Graphs have become widely used to represent and study social, biological, and technological systems. Statistical methods to analyze empirical graphs were proposed based on the graph's spectral density. However, their running time is cubic in the number of vertices, precluding direct application to large instances. Thus, efficient algorithms to calculate the spectral density become necessary. For sparse graphs, the cavity method can efficiently approximate the spectral density of locally treelike undirected and directed graphs. However, it does not apply to most empirical graphs because they have heterogeneous structures. Thus, we propose methods for undirected and directed graphs with heterogeneous structures using a new vertex's neighborhood definition and the cavity approach. Our methods' time and space complexities are O(|E|hmax3t) and O(|E|hmax2t), respectively, where |E| is the number of edges, hmax is the size of the largest local neighborhood of a vertex, and t is the number of iterations required for convergence. We demonstrate the practical efficacy by estimating the spectral density of simulated and real-world undirected and directed graphs.

    DOI: 10.1103/PhysRevE.109.034303

    Web of Science

    Scopus

    PubMed

  • Spectral density-based clustering algorithms for complex networks. 査読 国際共著

    Ramos TC, Mourao-Miranda J, Fujita A

    Frontiers in Neuroscience.   17   926321   2023年3月

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    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)  

  • A fast algorithm to approximate the spectral density of locally tree-like networks with assortativity. 査読 国際共著

    Guzman GEC and Fujita A

    Journal of Complex Networks.   11 ( 2 )   187 - 221   2023年3月

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    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1093/comnet/cnad005

  • Lead contamination in human milk affects infants' language trajectory: results from a prospective cohort study 査読 国際共著

    Naspolini, NF; Vanzele, PAR; Totolo, P; Schüroff, PA; Fatori, D; Neto, SAV; Barata-Silva, C; dos Santos, LMG; Fujita, A; Passos-Bueno, MR; Beltrao-Braga, PCB; Campos, AC; Carvalho, ACPLF; Polanczyk, GV; Moreira, JC; Taddei, CR

    FRONTIERS IN PUBLIC HEALTH   12   1450570   2024年8月   eISSN:2296-2565

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Frontiers in Public Health  

    Infants growing up in low- and middle-income countries are at increased risk of suffering adverse childhood experiences, including exposure to environmental pollution and lack of cognitive stimulation. In this study, we aimed to examine the levels of metals in the human milk of women living in São Paulo City, Brazil, and determine the effects on infants’ neurodevelopment. For such, a total of 185 human milk samples were analyzed for arsenic (As), lead (Pb), mercury (Hg), and cadmium (Cd) using inductively coupled plasma mass spectrometry (ICP-MS). We applied the Bayley scales of infant and toddler development Third Edition (Bayley-III) to assess developmental milestones. In our analysis, we found a mean (standard deviation) concentration of As in human milk equal to 2.76 (4.09) μg L−1, followed by Pb 2.09 (5.36) and Hg 1.96 (6.68). Cd was not detected. We observed that infants exposed to Pb presented language trajectories lower than non-exposed infants (β = −0.413; 95% CI -0.653, −0.173) after adjustment for infant age, maternal education, socioeconomic status, infant sex, and sample weights. Our results report As, Pb, and Hg contamination in human milk, and that infant exposure to Pb decreased infants’ language development. These results evidence maternal-child environmental exposure and its detrimental impact on infants’ health.

    DOI: 10.3389/fpubh.2024.1450570

    Web of Science

    Scopus

    PubMed

  • Food aversion, systemic inflammation and intramuscular adipose tissue are mortality predictors in advanced lung cancer patients. 査読 国際共著

    Das Neves W, de Souza Borges AP, Carvalho VJ, Fujita A, de Castro Jr G.

    JCSM Rapid Communications   2024年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  • Networks of neurodevelopmental traits, socioenvironmental factors, emotional dysregulation in childhood, and depressive symptoms across development in two UK cohorts. 査読 国際共著

    Farhat LC, Blakey R, Smith GD, Fujita A, Shephard E, Stergiakouli E, Tiling K, Eley T, Thapar A, Polanczyk.

    The American Journal of Psychiatry   180 ( 10 )   755 - 765   2023年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1176/appi.ajp.20220868

  • Autoregulation of blood flow drives early hypotension in a rat model of systemic inflammation induced by bacterial lipopolysaccharide. 査読 国際共著

    Moretti E, Rodrigues AC, Marques B, Totola L, Ferreira C, Brito C, Matos C, da Silva F, Santos R, Lopes L, Moreira T, Akamine E, Baccala LA, Fujita A, Steiner A.

    PNAS Nexus   2   1 - 13   2023年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  • Convergent evolution in silico reveals shape and dynamic principles of directed locomotion. 査読 国際共著

    Biazzi RB, Fujita A, Takahashi DY.

    eLife   12   RP87180   2023年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  • A model-based clustering algorithm with covariates adjustment and its application to lung cancer stratification.

    Relvas CEM, Nakata A, Chen G, Beer DG, Gotoh N, Fujita A

    Journal of Bioinformatics and Computational Biology   21 ( 4 )   2350019   2023年

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    担当区分:責任著者  

    DOI: 10.1142/S0219720023500191

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