Application-Oriented Characterized Disciplines, China; Double First-Class University Project of Hunan Province, China (Xiangjiaotong) [20181469]; Science and Technology Plan Project of Hunan Province, China [2016TP1020]; Open Fund Project of Hunan Provincial Key Laboratory of Intelligent Information Processing and Application for Hengyang Normal University, China [IIPA18K06]; Hengyang City Science and Technology Project [2018 kJ125]; Mathematical Research Impact Centric Support (MATRICS) of the Department of Science and Technology (DST), IndiaDepartment of Science & Technology (India) [MTR/2017/000367]