1. Faculty of Science and Technology, Hirosaki University, Hirosaki, Japan
2. Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan
3. Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, Tokyo, Japan
4. Faculty of Engineering, Tohoku Gakuin University, Sendai, Japan
5. Department of Mechanical Engineering, National Defense Academy of Japan, Yokosuka, Japan