1. OKUMURA ENGINEERING CORPORATION(1-11-18, Misaki, Minato-ku, Osaka-shi, Osaka 552-0016, Japan)
2. KINDAI UNIVERSITY(3-4-1, Kowakae, Higashiosaka-shi, Osaka 577-8502, Japan)
3. KOBE CITY COLLEGE OF TECHNOLOGY(8-3, Gakuenhigashi-machi, Nishi-ku, Kobe-shi, Hyogo, 651-2194, Japan)