1. Faculty of Innovation Engineering, Macau University of Science and Technology, Macau, China
2. Faculty of Science and Technology, University of Macau, Macau, China
3. School of Mathematics and Computational Science, Wuyi University, Jiangmen, China
4. Hubei Key Laboratory of Applied Mathematics, Faculty of Mathematics and Statistics, Hubei University, Wuhan, China
5. Faculty of Electrical and Computer Engineering, University of Iceland, Reykjavik, Iceland