287 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP65 papers
- Kyoto UniversityJP56 papers
- National Astronomical Observatory of JapanJP28 papers
- Japan Science and Technology AgencyJP16 papers
- Tohoku UniversityJP16 papers
- Kyushu UniversityJP13 papers
- Institute of Space and Astronautical ScienceJP12 papers
- Nagoya UniversityJP11 papers
- Centre National de la Recherche ScientifiqueFR8 papers
- Pennsylvania State UniversityUS8 papers
- The University of OsakaJP7 papers
- University of California, BerkeleyUS7 papers
13 papers · 1 filter
Evolution of global development cooperation: An analysis of aid flows with hierarchical stochastic block models
Koji Oishi, Hiroto Ito, Yohsuke Murase +2
Despite considerable scholarly attention on the institutional and normative aspects of development cooperation, its longitudinal dynamics unfolding at the global level have rarely…
Balanced-imbalanced transitions in indirect reciprocity dynamics on networks
Koji Oishi, Shuhei Miyano, Kimmo Kaski +1
Here we investigate the dynamics of indirect reciprocity on networks, a type of social dynamics in which the attitude of individuals, either cooperative or antagonistic, toward oth…
Inflow process of pedestrians to a confined space
Takahiro Ezaki, Kazumichi Ohtsuka, Mohcine Chraibi +5
To better design safe and comfortable urban spaces, understanding the nature of human crowd movement is important. However, precise interactions among pedestrians are difficult to…
Collective motion of oscillatory walkers
Takahiro Ezaki, Ryosuke Nishi, Daichi Yanagisawa +1
We study a system of interacting self-propelled particles whose walking velocity depends on the stage of the locomotion cycle. The model introduces a phase equation in the optimal…
Dynamics of assembly production flow
Takahiro Ezaki, Daichi Yanagisawa, Katsuhiro Nishinari
Despite recent developments in management theory, maintaining a manufacturing schedule remains difficult because of production delays and fluctuations in demand and supply of mater…
Taming macroscopic jamming in transportation networks
Takahiro Ezaki, Ryosuke Nishi, Katsuhiro Nishinari
In transportation networks, a spontaneous jamming transition is often observed, e.g in urban road networks and airport networks. Because of this instability, flow distribution is s…
Co-evolution of networks and quantum dynamics: a generalization of preferential attachment
Vincenzo Nicosia, Takuya Machida, Richard Wilson +4
We propose a model of network growth in which the network is co-evolving together with the dynamics of a quantum mechanical system, namely a quantum walk taking place over the netw…
Simulation of space acquisition process of pedestrians using Proxemic Floor Field Model
Takahiro Ezaki, Daichi Yanagisawa, Kazumichi Ohtsuka +1
We propose the Proxemic Floor Field Model as an extension of the Floor Field Model, which is one of the successful models describing the pedestrian dynamics. Proxemic Floor Field i…
Group Chase and Escape with Conversion from Targets to Chasers
Ryosuke Nishi, Atsushi Kamimura, Katsuhiro Nishinari +1
We are studying the effect of converting caught targets into new chasers in the context of the recently proposed `group chase and escape' problem. Numerical simulations have shown…
Exclusive Queueing Process with Discrete Time
Chikashi Arita, Daichi Yanagisawa
In a recent study [C Arita, Phys. Rev. E 80, 051119 (2009)], an extension of the M/M/1 queueing process with the excluded-volume effect as in the totally asymmetric simple exclusio…
A Condition for Cooperation in a Game on Complex Networks
Tomohiko Konno
We study a condition of favoring cooperation in a Prisoner's Dilemma game on complex networks. There are two kinds of players: cooperators and defectors. Cooperators pay a benefit…
Excluded Volume Effect in Queueing Theory
Daichi Yanagisawa, Akiyasu Tomoeda, Rui Jiang +1
We have introduced excluded volume effect, which is an important factor to model a realistic pedestrian queue, into queueing theory. The probability distributions of pedestrian num…
Introduction of Frictional and Turning Function for Pedestrian Outflow with an Obstacle
Daichi Yanagisawa, Ayako Kimura, Akiyasu Tomoeda +4
In this paper, two important factors which affect the pedestrian outflow at a bottleneck significantly are studied in detail to analyze the effect of an obstacle set up in front of…