How and Why Fish School: An Information-theoretic Analysis of Coordinated Swimming

鱼群的方式和原因：协调游泳的信息论分析

• 批准号: 1901697
• 负责人: Maurizio Porfiri
• 金额: $ 39万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1901697&HistoricalAwards=false
• 关键词: How; Why; Fish; Information; theoretic

This grant will support research that will contribute new knowledge related to fluid-structure interactions and collective dynamics, promoting the progress of science and empowering technological advancements. There is a dire need for advancements in the analysis of complex fluid-structure interactions and in the diagnostics of fluid coupling between solids, without having access to reliable mathematical models. Critical examples across engineering and science include human phonation, clusters of tall civil structures reacting to wind gusts, arrays of active materials for underwater sensing, nanomats of carbon nanotubes, arrays of cilia for fluid mixing and transport, and antennulary setal hairs of copepods. This award supports fundamental research to fill these gaps in knowledge, focusing on fish schooling, whose energy efficiency, geometric complexity, and visual allure have attracted the interest of the scientific community and general public for centuries. This research involves several disciplines bridging data-driven dynamical systems, experimental fluid mechanics, and experimental biology. The multi-disciplinary approach carries momentum in formal and informal learning, by training University students from underrepresented groups, exposing high school students from underprivileged communities to biology, engineering, and mathematics, and outreach to the general public.Recent experimental results demonstrate that at sufficiently large swimming speeds, schooling fish may prefer to swim in a "phalanx" formation, where there is no leader and every fish beats their tail almost in synchrony. The transition from the classical diamond formation to the phalanx challenges the present understanding of the role of vortex interactions in fish schooling, which might be superseded by other hydrodynamic or visual pathways. Yet, it is currently impossible to rigorously test this possibility, due to the lack of data-driven techniques to disentangle causes from effects in coordinated swimming. This project will contribute a mathematically-principled, experimentally-grounded approach to quantify information flow in ensembles of dynamical systems, interacting through multiple pathways that involve varying propagation times and physical variables. Hypothesis-driven, engineering-principled experiments will be conducted toward the discovery and exploration of dynamic structure, information pathways, and energetic mechanisms that underpin coordinated swimming.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该赠款将支持研究，这些研究将促进与流体结构相互作用和集体动态相关的新知识，从而促进科学的进步和授权技术进步。在分析复杂的流体结构相互作用以及固体之间流体耦合的诊断时，迫切需要进步，而无需访问可靠的数学模型。跨工程和科学的关键例子包括人类的发音，对风阵风反应的高层民用结构的簇，用于水下感应的活性材料阵列，碳纳米管的纳米纳米特，用于液体混合和运输的纤毛阵列以及Copepods的固定头发。该奖项支持基本研究，以填补这些知识的差距，重点是鱼类学校，其能源效率，几何复杂性和视觉魅力吸引了科学界和公众的兴趣数百年。这项研究涉及几个学科，桥接数据驱动的动力学系统，实验流体力学和实验生物学。多学科的方法通过培训来自代表性不足的群体的大学生，从贫困社区到生物学，工程学和数学的高中生来培训大学生，并向公众推广，向普通公众展开。同步。从古典钻石形成到卵形的过渡挑战了对涡流相互作用在鱼类学校中的作用的当前理解，这可能被其他流体动力或视觉途径所取代。然而，由于缺乏数据驱动的技术，目前不可能严格测试这种可能性，从而将其引起的原因与协调游泳的效果相关。该项目将贡献一种数学原理的实验基础方法，以量化动态系统集合的信息流，并通过多种途径进行交互，这些途径涉及不同的传播时间和物理变量。假设驱动的工程原理实验将进行，以发现和探索动态结构，信息途径和能量机制，这些机制是基于协调游泳的基础的。该奖项反映了NSF的法定任务，并通过评估该基金会的智力功能和广泛的影响来审查Criteria，并认为通过评估的支持值得进行。

项目成果

Inferring directional interactions in collective dynamics: a critique to intrinsic mutual information

推断集体动态中的定向相互作用：对内在互信息的批判

• DOI: 10.1088/2632-072x/acace0
• 发表时间: 2022
• 期刊: Journal of Physics: Complexity
• 作者: De Lellis, Pietro;Ruiz Marín, Manuel;Porfiri, Maurizio
• 通讯作者: Porfiri, Maurizio

A controlled transfer entropy approach to detect asymmetric interactions in heterogeneous systems

• DOI: 10.1088/2632-072x/acde2d
• 发表时间: 2023-06-01
• 期刊: JOURNAL OF PHYSICS-COMPLEXITY
• 影响因子: 2.7
• 作者: Das，Rishita;Porfiri，Maurizio
• 通讯作者: Porfiri，Maurizio

Hydrodynamic Performance of Euplectella aspergillum: Simulating Real Life Conditions in the Abyss

Euplectella aspergillum 的水动力性能：模拟深渊中的真实生活条件

• DOI: 10.4208/cicp.oa-2022-0063
• 发表时间: 2022
• 期刊: Communications in Computational Physics
• 影响因子: 3.7
• 作者: Falcucci, Giacomo;Amati, Giorgio;Fanelli, Pierluigi;null, Sauro Succi;Porfiri, Maurizio
• 通讯作者: Porfiri, Maurizio

Educating Youth About Human Impact on Freshwater Ecosystems Using an Online Serious Game

• DOI: 10.1109/tg.2022.3185959
• 发表时间: 2023-12-01
• 期刊: IEEE TRANSACTIONS ON GAMES
• 影响因子: 2.3
• 作者: Lombana，Daniel A. Burbano;Ventura，Roni Barak;Porfiri，Maurizio
• 通讯作者: Porfiri，Maurizio

Reply to: Models of flow through sponges must consider the sponge tissue

回复：通过海绵的流动模型必须考虑海绵组织

• DOI: 10.1038/s41586-021-04381-7
• 发表时间: 2022
• 期刊: Nature
• 影响因子: 64.8
• 作者: Falcucci, Giacomo;Polverino, Giovanni;Porfiri, Maurizio;Amati, Giorgio;Fanelli, Pierluigi;Krastev, Vesselin K.;Succi, Sauro
• 通讯作者: Succi, Sauro