*Toru Terao¹, Fumie Murata², Yusuke Yamane³, Masashi Kiguchi⁴, Azusa Fukushima⁵, Masahiro Tanoue⁶, Taiichi Hayashi⁷ (1.Faculty of Education, Kagawa University, 2.Faculty of Science, Kochi University, 3.Faculty of Education, Tokoha Univesity, 4.Insitute of Industrial Science, The University of Tokyo, 5.Faculty of Humanity, Kobe Gakuin University, 6.School of Engineering, The University of Tokyo, 7.Center for Southeast Asian Research, Kyoto University)