1. Electrical Engineering Department , College of Engineering, Najran University , Najran , Kingdom of Saudi Arabia
2. Physics Department , Islamic University of Gaza , P.O. Box 108 , Gaza , Palestine
3. Department of Math. & Sc. , Dhofar University , Salalah , Oman
4. Department of Electrical and Electronics Engineering , Nisantasi University , Istanbul , Turkey
5. Department of Computer Engineering , Marwadi University , Rajkot 360003 , India