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Ken Yamada
Faculty of Eng., Tohoku gakuin Univ.:Graduate School of Eng., Tohoku Gakuin Univ.
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Hisato Honda
Faculty of Eng., Tohoku gakuin Univ.
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Shuhei Horiuchi
Graduate School of Eng., Tohoku Gakuin Univ.
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Tetsuya Kinai
Faculty of Eng., Tohoku gakuin Univ.