1. Public Teaching and Research Department, Huzhou College, Huzhou 313000, P. R. China
2. Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA
3. University of Massachusetts Medical School, Worcester, MA 01655, USA
4. Department of Information Technology, Faculty of Computing and Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia
5. Department of Mathematics, Huzhou University, Huzhou 313000, P. R. China
6. Institute for Advanced Study Honoring Chen Jian Gong, Hangzhou Normal University, Hangzhou 311121, P. R. China