Affiliation: | aDepartment of Industrial Engineering, Hanyang University, 17 Haengdang-Dong, Sungdong-Ku, Seoul, 133-791, South Korea bVoronoi Diagram Research Center, Hanyang University, 17 Haengdang-Dong, Sungdong-Ku, Seoul, 133-791, South Korea cConcurrent Engineering Research Team, Electronics and Telecommunications Research Institute, Daejeon, South Korea |