1. Department of Industrial Education and Technology, National Changhua University of Education, 2 Shi-Da Road, Changhua County, Changhua City 500, Taiwan
2. Department of Information Management, National United University, 1 Lienda Road, Miaoli County, Miaoli City 36003, Taiwan
3. Institute of Mechatronoptic Systems and Department of Automation Engineering, Chienkuo Technology University, No. 1 Chiehshou North Road, Changhua City 500, Taiwan
4. Department of International Business, National Chi Nan University, 1 University Road, Nantou County, Puli City 54561, Taiwan