1. Tunghai University,Department of Computer Science,Taichung,Taiwan, R.O.C
2. National Pingtung University of Science and Technology,Department of Management Information Systems,Taiwan, R.O.C
3. National Taitung University,Department of Computer Science and Information Engineering,Taitung,Taiwan, R.O.C
4. National Dong Hwa University,Department of Electrical Engineering,Hualien,Taiwan, R.O.C