1. National Tsing Hua University, Institute of Information Systems and Applications Hsinchu, Taiwan
2. De Lin Institute of Technology, Department of Computer and Communication Engineering, Taipei, Taiwan
3. China University of Technology, Department of Information Management Hsinchu, Taiwan
4. Institute of Nuclear Energy Research, Nuclear Instrumentation Division Hsinchu, Taiwan
5. National Chiao Tung University, Institute of Information Management Hsinchu, Taiwan