First Author:   Masaya Yasuoka Kwansei Gakuin University yasuoka@kwansei.ac.jp   1-155 Uegahara Ichiban-Cho Nishinomiya, 6628501, Japan   +81-798-54-6993(Phone) +81-798-54-6993(Fax) https://sites.google.com/view/myasuoka1978/home Second Author: Hiroki Tanaka Doshisha University hitanaka@mail.doshisha.ac.jp   Imadegawa-Shinmachi, Kamigyo-ku Kyoto, 6020047, Japan   +81-75-251-3507(Phone) +81-75-251-3507(Fax) http://www.cam.hi-ho.ne.jp/thiroki/