Institution: | a Department of Technology Management, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea b Department of Industrial Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea c Department of Industrial and Systems Engineering, Texas A&M University, College Station, TX 77843-3131, USA d Department of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, TX 77843-3367, USA |