Daichi Yanagisawa
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Daichi Yanagisawa has a total of 9 co-authors. Here are the top co-authors by number of shared publications:
- Katsuhiro Nishinari
Department of Aeronautics and Astronautics, School of Engineering, The University of Tokyo, Tokyo, Japan
4 shared publications Akiyasu Tomoeda
Meiji University
3 shared publicationsKatsuhiro Nishinari
The University of Tokyo
3 shared publications- Akiyasu Tomoeda
Meiji University
2 shared publications - Takahiro Ezaki
Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
2 shared publications Ayako Kimura
1 shared publication
Latest Publications
- 6 December 2013
- Published by Springer Nature
- p. 1375-1383
Starting-wave and Optimal Density in a Queue
- 6 December 2013
- Published by Springer Nature
- p. 1291-1303
Influence of Rhythm and Velocity Variance on Pedestrian Flow
- 6 December 2013
- Published by Springer Nature
- p. 1291-1303
Influence of Rhythm and Velocity Variance on Pedestrian Flow
- 2 September 2013
- Published by Springer Nature
- p. 187-196
Effect of Rhythm on Pedestrian Flow
- Open Access
Pedestrian flow through multiple bottlenecks
We investigate the dynamics of the evacuation process with multiple bottlenecks using the floor field model. To deal with this problem, we first focus on a part of the system and report its microscopic behavior. The system is controlled by parameters of inflow and the competitiveness of the pedestrians, and large inflow leads to a congested situation. Through simulations, the metastable state induced by conflicts of pedestrians is observed. The metastability is related to the phase transition from free flow to congestion. The critical condition of the transition is theoretically derived. In addition, we give simulation results of situations with multiple bottlenecks. They imply that local improvement of pedestrian flow sometimes adversely affects the total evacuation time, and that the total optimization of the system is not straightforward.
Open AccessPedestrian flow through multiple bottlenecks
We investigate the dynamics of the evacuation process with multiple bottlenecks using the floor field model. To deal with this problem, we first focus on a part of the system and report its microscopic behavior. The system is controlled by parameters of inflow and the competitiveness of the pedestrians, and large inflow leads to a congested situation. Through simulations, the metastable state induced by conflicts of pedestrians is observed. The metastability is related to the phase transition from free flow to congestion. The critical condition of the transition is theoretically derived. In addition, we give simulation results of situations with multiple bottlenecks. They imply that local improvement of pedestrian flow sometimes adversely affects the total evacuation time, and that the total optimization of the system is not straightforward.
- 30 August 2012
- Published by American Physical Society (APS) in Physical Review E
- Vol. 86 (2) , 026118
Pedestrian flow through multiple bottlenecks
We investigate the dynamics of the evacuation process with multiple bottlenecks using the floor field model. To deal with this problem, we first focus on a part of the system and report its microscopic behavior. The system is controlled by parameters of inflow and the competitiveness of the pedestrians, and large inflow leads to a congested situation. Through simulations, the metastable state induced by conflicts of pedestrians is observed. The metastability is related to the phase transition from free flow to congestion. The critical condition of the transition is theoretically derived. In addition, we give simulation results of situations with multiple bottlenecks. They imply that local improvement of pedestrian flow sometimes adversely affects the total evacuation time, and that the total optimization of the system is not straightforward.
- 30 August 2012
- Published by American Physical Society (APS) in Physical Review E
- Vol. 86 (2) , 026118
Pedestrian flow through multiple bottlenecks
We investigate the dynamics of the evacuation process with multiple bottlenecks using the floor field model. To deal with this problem, we first focus on a part of the system and report its microscopic behavior. The system is controlled by parameters of inflow and the competitiveness of the pedestrians, and large inflow leads to a congested situation. Through simulations, the metastable state induced by conflicts of pedestrians is observed. The metastability is related to the phase transition from free flow to congestion. The critical condition of the transition is theoretically derived. In addition, we give simulation results of situations with multiple bottlenecks. They imply that local improvement of pedestrian flow sometimes adversely affects the total evacuation time, and that the total optimization of the system is not straightforward.
- 23 January 2012
- Published by American Physical Society (APS) in Physical Review E
- Vol. 85 (1) , 016111
Improvement of pedestrian flow by slow rhythm
We have developed a simple model for pedestrians by dividing walking velocity into two parts, which are step size and pace of walking (number of steps per unit time). Theoretical analysis on pace indicates that rhythm that is slower than normal-walking pace in a low-density regime increases flow if the flow-density diagram is convex downward in a high-density regime. In order to verify this result, we have performed an experiment with real pedestrians and observed the improvement of flow in a congested situation using slow rhythm.
- 23 January 2012
- Published by American Physical Society (APS) in Physical Review E
- Vol. 85 (1) , 016111
Improvement of pedestrian flow by slow rhythm
We have developed a simple model for pedestrians by dividing walking velocity into two parts, which are step size and pace of walking (number of steps per unit time). Theoretical analysis on pace indicates that rhythm that is slower than normal-walking pace in a low-density regime increases flow if the flow-density diagram is convex downward in a high-density regime. In order to verify this result, we have performed an experiment with real pedestrians and observed the improvement of flow in a congested situation using slow rhythm.
- Open Access
- 1 March 2010
- Published by IntechOpen
Theoretical and Experimental Study for Queueing System with Walking Distance
Theoretical and Experimental Study for Queueing System with Walking Distance | InTechOpen, Published on: 2010-03-01. Authors: Daichi Yanagisawa, Yushi Suma, Akiyasu Tomoeda, et
- 1 March 2010
- Published by IntechOpen
Open AccessTheoretical and Experimental Study for Queueing System with Walking Distance
Theoretical and Experimental Study for Queueing System with Walking Distance | InTechOpen, Published on: 2010-03-01. Authors: Daichi Yanagisawa, Yushi Suma, Akiyasu Tomoeda, et