Agent-Based Social Systems Volume 15 Editor in Chief Hiroshi Deguchi, Yokohama, Japan Series Editors Shu-Heng Chen, Taipei, Taiwan, ROC Claudio Cioffi-Revilla, Fairfax, USA Nigel Gilbert, Guildford, UK Hajime Kita, Kyoto, Japan Takao Terano, Yokohama, Japan Kyoichi Kijima, Tokyo, Japan Setsuya Kurahashi, Tokyo, Japan Manabu Ichikawa, Saitama, Japan Shingo Takahashi, Tokyo, Japan Motonari Tanabu, Yokohama, Japan Aki-Hiro Sato, Kyoto, Japan