*芳原 容英¹、Amir Mohamed²、Chandima Gomes³、Wan Ismail Bin Ibrahim²、Zulkurnain Abdul-Malek⁴、Syahrun Nizam⁵、Michael Stock⁶、塩川 和夫⁷、菊池 博史¹、津田 卓雄¹ (1.電気通信大学　大学院情報理工学研究科、2.University of Malaysia Pahang Pekan, Malaysia、3.University of the Witwatersrand Johannesburg, South Africa、4.Universiti Teknologi Malaysia Johor Bahru, Malaysia、5.University Malaysia Perlis Perlis, Malaysia、6.EarthNetworks, Inc. Germantown, USA、7.Nagoya University, Nagoya, Japan)