1. Key Laboratory of High Performance Computing and Stochastic Information Processing (HPCSIP) (Ministry of Education of China), College of Mathematics and Statistics, Hunan Normal University, Changsha, China;
2. Department of Mathematical Sciences, Georgia Southern University Statesboro, GA, USA;
3. College of Mathematics and Computational Science, Hunan First Normal University, Changsha, China;
4. Optimization and Uncertainty Quantification Department, Sandia National Laboratories, Albuquerque, NM, USA;
5. Department of Mathematics, University of South Carolina Columbia, SC, USA