1. School of Mechanical Engineering and the Division of Industrial and System Engineering, Taiyuan University of Science and Technology, Taiyuan, China
2. Division of Industrial and System Engineering and the School of Economics and Management, Taiyuan University of Science and Technology, Taiyuan, China
3. Division of Industrial and System Engineering, Taiyuan University of Science and Technology, Taiyuan, China
4. Division of Industrial and System Engineering and the School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan, China