1. College of Engineering, Swansea University, Swansea SA1 3UA, UK
2. College of Computer Science and Engineering, Jishou University, Jishou 416000, China
3. School of Mathematics, Tongji University, Shanghai 200092, China
4. Institute of Mechanics, Vietnam Academy of Science and Technology, Hanoi 000084, Vietnam
5. School of Business, Jiangnan University, Wuxi 214122, China