1. College of Mathematics and StatisticsGuangxi Normal University Guilin China
2. Department of Electrical EngineeringYeungnam University Kyongsan South Korea
3. Faculty of Electronic Information and Electrical EngineeringDalian University of Technology Dalian China
4. School of MathematicsSoutheast University Nanjing China
5. School of EngineeringQufu Normal University Rizhao China