〇Naoki Toyama1, Hiroe Kimura2, Naoyuki Matsumoto3, Shinnosuke Kamei1, Don Futaba3, Norifumi Terui2, Shigeki Furukawa1
(1. Nihon University, 2. National Institute of Technology, Ichinoseki Collage, 3. National Institute of Advanced Industrial Science and Technology)