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*Chang-Min Lee
Department of Industrial & Management Engineering, DongEui University., Busan, South Korea
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Yeon-Ju Oh
Department of Industrial & Management Engineering, DongEui University., Busan, South Korea
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Dae-Woong Kim
Department of Industrial & Management Engineering, DongEui University., Busan, South Korea
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Jung-Hyeon Yoo
Department of Industrial & Management Engineering, DongEui University., Busan, South Korea
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Kwang-Hyeon Shin
Department of Industrial & Management Engineering, DongEui University., Busan, South Korea
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Keun-Sang Park
[in Japanese]