1. College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, China
2. College of Computer Science and Engineering, Dalian Minzu University, Dalian, China
3. Department of Industrial Engineering, University of Padova, Padova, Italy
4. University of Cassino and South Lazio, Cassino, Italy
5. Dipartimento Energia, Politecnico di Torino, Torino, Italy