Saori Iwanaga

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The Great East Japan Earthquake occurred at 14:46 h on Friday, 11 March 2011. It was the most powerful known earthquake to have hit Japan, and one of the five most powerful earthquakes overall in the world since modern record-keeping began in 1900. The earthquake triggered extremely destructive tsunami waves of up to 40.5 m in Miyako, Iwate. More than(More)
In this paper we address the issue realizing efficient and equitable utilization of limited resources by collective decision of interacting heterogeneous agents. There is no presumption that collective action of interacting agents leads to collectively satisfactory results without any central authority. How well agents do for it in adapting to their(More)
There are growing interests for studying collective behavior including the dynamics of markets, the emergence of social norms and conventions, and collective phenomena in daily life such as traffic congestion. In this paper, we deal with collective behavior in population with several social networks. We showed that collective behavior in cooperative(More)
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