1. a Department of Intelligent Systems Design Engineering, Faculty of Engineering, Toyama Prefectural University, Kurokawa 5180, Imizu, Toyama 939-0398, Japan;, Email: koyanagi@pu-toyama.ac.jp
2. b Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama 223-0061, Japan
3. c Fujikura Kasei Co., Ltd., 13-1 Sakurada 5-chome, Washimiya-machi, Kitakatsushika-Gun, Saitama 340-0203, Japan
4. d Department of Intelligent Systems Design Engineering, Faculty of Engineering, Toyama Prefectural University, Kurokawa 5180, Imizu, Toyama 939-0398, Japan