First Author:   Hiroshi Gunji Daito Bunka University hgunji@ic.daito.ac.jp   1-9-1 Takashimadaira Itabashi, 175-8571, Japan   +81-3-5399-7326(Phone) +81-3-5399-7326(Fax) Second Author: Kazuki Miura Aichi Gakuin University k-miura@za3.so-net.ne.jp   Nisshin, 470-0195, Japan