Unified model of collective bio-motion and group formation as phase transition

• Project/Area Number: 18540409
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biophysics/Chemical physics
• Research Institution: Meijo University (2007-2009); University of the Ryukyus (2006)
• Principal Investigator: NAKAYAMA Akihiro Meijo University, 理工学部, 教授 (60212106)
• Project Period (FY): 2006 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,700,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥600,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
• Keywords: 最適速度模型 / 生物集団 / 集団運動 / 群れ形成 / 蛇行 / 相転移 / 非線形動力学 / 力学模型 / 同期現象 / 歩行者流 / 不安定性 / 最適速度

Research Abstract

It is well-known that the traffic jam is understood by the idea of physics. Phase transition can explain why a state of traffic flow changes suddenly at a certain density. In pedestrian flow, so-called blocking occurs in a narrow corridor at high density. It can be understood in the same way as the traffic jam. In this work, we investigate phenomena in collective bio-motion by the same model as traffic and pedestrian flow. As a result, a meander which appears in a long group of organisms can be explained in a similar way.

Research Products

• [Journal Article] Metastability in the formation of an experimental traffic jam (2009)
  • Author(s): A. Nakayama, M. Fukui, M. Kikuchi, K. Hasebe, K. Nishinari, Y. Sugiyama, S. Tadaki, S. Yukawa
  • Journal Title: New Journal of Physics 11 Pages: 83025-83025
  • Peer Reviewed
• [Journal Article] Detailed data of traffic jam experiment (2009)
  • Author(s): A. Nakayama, M. Fukui, K. Hasebe, M. Kikuchi, K. Nishinari, Y. Sugiyama, S. Tadaki, S. Yukawa
  • Journal Title: Traffic and Granular Flow '07(ed. C. Appert-Rolland, F. Chevoir, P. Gondret, S. Lassarre, J.-P. Lebacque, M. Schreckenberg) (Springer-Verlag) Pages: 389-394
• [Journal Article] Detailed data of traffic jam experiment (2009)
  • Author(s): A.Nakayama
  • Journal Title: Traffic and Granular Flow '07 Pages: 389-394
• [Journal Article] Metastability in the formation of an experimental traffic jam (2009)
  • Author(s): A.Nakayama
  • Journal Title: New Journal of Physics 11 Pages: 83025-83025
  • Peer Reviewed
• [Journal Article] Traffic jams without bottlenecks - experimental evidence for the physical mechanism of the formation of a jam (2008)
  • Author(s): Y. Sugiyama, M. Fukui, M. Kikuchi, K. Hasebe, A. Nakayama, K. Nishinari, S. Tadaki, S. Yukawa
  • Journal Title: New Journal of Physics 10 Pages: 33001-33001
  • Peer Reviewed
• [Journal Article] Effect of attractive interaction on instability of pedestrian flow in two dimensional optimal velocity model (2008)
  • Author(s): A. Nakayama, K. Hasebe, Y. Sugiyama
  • Journal Title: Physical Review E 77 Pages: 16105-16105
  • Peer Reviewed
• [Journal Article] Instability of pedestrian flow in 2D optimal velocity model with attractive interaction (2008)
  • Author(s): A.Nakayama, K.Hasebe, Y.Sugiyama
  • Journal Title: Computer Physics Communications 177 Pages: 162-163
  • Peer Reviewed
• [Journal Article] Effect of attractive interaction on instability of pedestrian flow in two dimensional optimal velocity model (2008)
  • Author(s): A.Nakayama, K.Hasebe, Y.Sugiyama
  • Journal Title: Physical Review E77
  • Peer Reviewed
• [Journal Article] Traffic jams without bottlenecks-experimental evidence for the physical mechanism of the formation of a jam (2008)
  • Author(s): Y.Sugiyama, M.Fukui, M.Kikuchi, K.Hasebe, A.Nakayama, K.Nishinari, S.Tadaki, S.Yukawa
  • Journal Title: New Journal of Physics 10
  • Peer Reviewed
• [Journal Article] Effect of attractive interaction on instability of pedestrian flow in two dimensional optimal velocity model (2008)
  • Author(s): A. Nakayama
  • Journal Title: Physical Review E 77
  • Peer Reviewed
• [Journal Article] Traffic jams without bottlenecks-experimental evidence for the physical mechanism of the formation of a jam (2008)
  • Author(s): Y. Sugiyama
  • Journal Title: New Journal of Physics 10
  • Peer Reviewed
• [Journal Article] Economic Fluctuations Based on Optimal Diffusion Index Model (2007)
  • Author(s): M. Taniguchi, M. Bando, A. Nakayama
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 124003-124003
  • NAID: 110006532194
  • Peer Reviewed
• [Journal Article] Instability of pedestrian flow in 2D optimal velocity model with attractive interaction (2007)
  • Author(s): A. Nakayama, K. Hasebe, Y. Sugiyama
  • Journal Title: Computer Physics Communications 177 Pages: 162-163
  • Peer Reviewed
• [Journal Article] Phase Diagram of Group Formation in 2-d Optimal Velocity Model (2007)
  • Author(s): Y. Sugiyama, A. Nakayama, E. Yamada
  • Journal Title: Traffic and Granular Flow '05(ed. A. Schadschneider, T. Poeschel, R. Kuehne, M. schreckenberg, D.E. Wolf)(Springer-Verlag) Pages: 277-282
• [Journal Article] Instability of pedestrian flow in 2D optimal velocity model with attractive interaction (2007)
  • Author(s): A. Nakayama
  • Journal Title: Computer Physics Communications 177 Pages: 162-163
  • Peer Reviewed
• [Journal Article] Instability of pedestrian flow in 2D optimal velocity model with attractive interaction (2007)
  • Author(s): A.Nakayama, H.Hasebe, Y.Sugiyama
  • Journal Title: Computer Physics Communications (in press)
• [Journal Article] Instability ob pedestrian flow in two-dimensional optimal velocity model (2007)
  • Author(s): A.Nakayama, Y.Sugiyama, H.Hasebe
  • Journal Title: Pedestrian and Evacuation Dynamics 2005 Pages: 321-332
• [Journal Article] Power-Law Fluctuation in Expressway Traffic Flow : Detrended Fluctuation Analysis (2006)
  • Author(s): S. Tadaki, M. Kikuchi, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, S. Yukawa
  • Journal Title: J. Phys. Soc. Jpn. 75
  • Peer Reviewed
• [Journal Article] 引力のある2次元最適速度模型型における歩行者流の不安定 (2006)
  • Author(s): 中山彰宏, 長谷部勝也, 杉山雄規
  • Journal Title: Proceedings of the 12th Symposium on Simulation of Traffic Flow Pages: 5-8
• [Journal Article] Instability of pedestrian flow in two-dimensional optimal velocity model (2005)
  • Author(s): A. Nakayama, Y. Sugiyama, K. Hasebe
  • Journal Title: Pedestrian and Evacuation Dynamics 2005(ed. N. Waldau, P. Gattermann, H. Knoflacher, M. Schreckenberg)(Springer-Verlag) Pages: 321-332
• [Presentation] Dynamical pattern formations of self-driven particles and group formation (2007)
  • Author(s): Y. Sugiyama
  • Organizer: Conference on Computational Physics
  • Place of Presentation: Brussels, Belgium
  • Year and Date: 2007-09-05
• [Presentation] Detailed Data of Traffic Jam Experiment (2007)
  • Author(s): A. Nakayama
  • Organizer: Traffic and Granular Flow
  • Place of Presentation: Orsay, Frahce
  • Year and Date: 2007-06-20
• [Presentation] Dynamical pattern formations of self-driven particles and group formation (2007)
  • Author(s): Y. Sugiyama, A. Nakayama
  • Organizer: Conference on Computational Physics 2007
  • Place of Presentation: Brussels, Belgium
• [Presentation] Business Cycle based on Optical DI Model (2007)
  • Author(s): M. Bando, A. Nakayama, M. Taniguchi
  • Organizer: The 10th Asia Pacific Physics Conference
  • Place of Presentation: Pohang, Republic of Korea
• [Presentation] Detailed Data of Traffic Jam Experiment (2007)
  • Author(s): A. Nakayama, M. Fukui, K. Hasebe, M. Kikuchi, K. Nishinari, Y. Sugiyama, S. Tadaki, S. Yukawa
  • Organizer: Traffic and Granular Flow '07
  • Place of Presentation: Orsay, France
• [Presentation] Instability of pedestrian flow in 2D optimal velocity model with attractive interaction (2006)
  • Author(s): A. Nakayama, K. Hasebe, Y. Sugiyama
  • Organizer: Conference on Computational Physics 2006
  • Place of Presentation: Gyeongju, Republic of Korea
• [Remarks] 論文(3)は国内外の新聞(例えば毎日新聞2008年5月2日東京夕刊)、Web(例えばScience 2008年3月28日)などで広く取り上げられた