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*Noritsune Yokoyama
Hiroshima Prefectural Technology Research Institute
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Koji Hashimoto
Hiroshima Prefectural Technology Research Institute
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Hitoshi Okano
Hiroshima Prefectural Technology Research Institute
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Koji Nakamura
Hiroshima Prefectural Technology Research Institute
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Fumio Nomura
Shindaiwa Corporation
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Makoto Akita
Shindaiwa Corporation
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Masanori Kawahara
Faculty of Art and Design, University of Toyama