Affiliation: | a Computer Science Department, University of Northern British Columbia, Prince George, BC, Canada, V2N 4Z9 b Sunflare Company, Shinjuku-Hirose Bldg., 7 Yotsuya 4-chome, Sinjuku-ku, Tokyo, Japan 160-0004 c Advanced Media Network Center, Utsunomiya University, Utsunomiya, Tochigi, Japan 321-8585 |