1. College of Mathematics and Computer ScienceFuzhou UniversityFuzhouPeople's Republic of China
2. Department of Electrical and Computer EngineeringDalhousie UniversityHalifaxNSCanada
3. School of Control Science and EngineeringShandong UniversityJinanShandongPeople's Republic of China
4. School of AutomationBeijing Institute of TechnologyBeijingPeople's Republic of China