*Tatsuya Suzuki¹, Fauzia Hanum Ikhawan¹, Chikage Abe², Kenji Konashi² (1. Nagaoka University of Technology (Japan), 2. Tohoku University (Japan))

*Fauzia Hanum Ikhwan¹, Masahiko Nakase¹, Kenji Konashi², Chikage Abe², Andri Rahma Putra³, Tatsuya Suzuki³ (1. Tokyo Tech. (Japan), 2. Tohoku Univ. (Japan), 3. Nagaoka Univ. of Tech. (Japan))

*Tommy Suhartono Wijaya Tan¹, Naokazu Idota¹, Takehiko Tsukahara¹ (1. Tokyo Tech (Japan))