*Miwa Yokokawa¹, Kazunori Fujita¹, Isamu Mori¹, Robert Fernandez², Matt Czapiga³, John Berrens⁴, Jeffrey Kwang⁴, Kensuke Naito⁴, Gary Parker⁴, Norihiro Izumi⁵, Hajime Naruse⁶ (1.Osaka Institute of Technology, 2.University of Hull, 3.Technical University of Delft, 4.University of Illinois, 5.Hokkaido University, 6.Kyoto University)