1. School of Mechanical Engineering, Jiangsu University,Zhenjiang,China
2. School of Computer and Information Engineering, Chuzhou University,Chuzhou,China
3. School of Mathematics and Computer Science, Yunnan Minzu University,Kunming,China
4. School of Information Engineering, Kunming University,Kunming,China
5. School of Systems Information Science, Future University,Hakodate,Japan