[1] Cent South Univ, Sch Math & Stat, Changsha 410083, Hunan, Peoples R China
[2] Dalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R China
[3] Qassim Univ, Coll Sci & Arts, Dept Math, Al Badaya 51951, Saudi Arabia
[4] King Khalid Univ, Coll Sci, Dept Phys, Abha 61413, Saudi Arabia
[5] Future Univ Egypt, Fac Engn, Ctr Res, New Cairo 11835, Egypt
[6] Cairo Univ, Fac Grad Studies Stat Res, Dept Operat & Management Res, Giza 12613, Egypt