First Author:   Masamitsu Kurata Sophia University kurata@sophia.ac.jp   7-1 Kioi-cho Chiyoda-ku, 102-8554, Japan   +81-90-9819-0317(Phone) +81-90-9819-0317(Fax) Second Author: Noriatsu Matsui Teikyo University noripmat@main.teikyo-u.ac.jp         Third Author: Yukio Ikemoto University of Tokyo ikemoto@ioc.u-tokyo.ac.jp         Fourth Author: Hiromi Tsuboi Akita University tsuboi@jimu.akita-u.ac.jp