Dr. Sio-Iong Ao finished his doctoral research in The University of Hong Kong and postdoctoral researches in the University of Oxford and Harvard University and is a former visiting professor of Cranfield University, UK and University of Wyoming, USA.Dr. Haeng-Kon Kim is currently a Dean of engineering college and a professor in the Department of Computer Engineering Catholic University of Daegu, in Korea. He has been a research staff member in Bell Lab. and NASA center in U.S.A. He has taught in Central Michigan Univ. in U.S.A. during his Sabbatical (Dec., 20, 2000 ~ Feb., 20,2002).Prof. Oscar Castillo is a Professor of Computer Science in the Graduate Division, Tijuana Institute of Technology, Tijuana, Mexico. Prof. Castillo serves as Research Director of Computer Science and head of the research group on fuzzy logic and genetic algorithms, and is President of HAFSA (Hispanic American Fuzzy Systems Association) and Vice-President of IFSA (International Fuzzy Systems Association). Prof. Castillo is also Vice-Chair of the Mexican Chapter of the Computational Intelligence Society (IEEE).Dr Alan H.S. Chan obtained his BSc, MPhil, and PhD from the University of Hong Kong. He has a wide range of research interests in human factors, work design, and occupational safety and health and has published more than 160 papers in SCI journals. He has been contributing to his profession and was elected as a Fellow of Institute of Industrial and Systems Engineers, International Ergonomics Association, Hong Kong Institution of Engineers, Institution of Engineering and Technology, and the Hong Kong Ergonomics Society. Dr Chan was the President of Institute of Industrial Engineers (HK) for 96/97 and twice the President of Hong Kong Ergonomics Society (03-05, 09-11). Prof. Hideki Katagiri is a Professor of Department of Industrial Engineering and Management at Kanagawa University, Japan. He is also a Visiting Professor of Hiroshima University, Japan. His research and teaching activities are in the area of Operations Research and Computational Intelligence such as Mathematical Optimization under Uncertainty, Soft Computing and Data Analysis.?