1. Department of Mathematics, Faculty of Science, University of Zakho, Zakho, Iraq
2. Department of Mathematics, Riphah International University, Faisalabad Campus, Faisalabad, Pakistan
3. Department of Electrical Engineering, College of Engineering, Qassim University, Unaizah, Saudi Arabia
4. Department of Mechanical Engineering, College of Engineering, Qassim University, Unaizah, Saudi Arabia
5. Department of Mechanical and Production Engineering, Eastern Technical University of Sierra Leone (ETU-SL), Kenema, Sierra Leone