*Marina Miyagawa¹, Tomoko Shigematsu¹, Koichi Kimura¹, Yoshiyuki Kushizaki¹, Hideki Tomiyama¹ (1. The Japan Steel Works, LTD)

*kazuki suzuki¹, tomoya okada¹, go matuba¹ (1. Yamagata Univ.)

*Shun Otaka¹, Noboru Nakayama¹ (1. Shinshu Univ.)

*Ryota Sameshima¹, Tetsu Sato¹, Takeshi Saito¹, Masahito Toyonaga¹, Mariko Takahashi¹, Rie Yamada¹, Itsuo Tanuma¹, Satoru Hosoda² (1. Tohoku Electronic Industrial Co., Ltd., 2. Kyoto Institute of Technology)