2:30 PM - 2:45 PM
*Yasuhiro Hirai1, Satoshi Okamura1, Izumi Sakamoto2, Ryuichi Shinjo3, Keiji Wada4, Takanori Yoshida5 (1.Hokkaido Education University, Sapporo, 2.Tokai University, 3.University of the Ryukyus, 4.Hokkaido Education University, Asahikawa, 5.Niki Junior High School, Hokkaido)