1. Department of Mechanical, Electrical, and Electronic Engineering, Shimane University; 1060 Nishikawatsu-cho Matsue Shimane 690-8504 Japan
2. Department of Mechanical Engineering, Kinki University; 3-4-1 Kowakae Higashiosaka Osaka 577-8502 Japan
3. Daio Paper Cooperation; 2-60 Mishima-kamiya-cho Shikokuchuo Ehime 799-0492 Japan