1. Al-Aqsa University,Faculty of Science,Physics Dept.,,Gaza,Palestine
2. Islamic University of Gaza,Faculty of Engineering,Electrical Engineering & Smart Systems Depts,Gaza,Palestine
3. Wadi Alshatti University, Brack,Mechchanical & Renewable Energy,Engineering dept., Engineering Faculty,Libya
4. The British University in Egypt (BUE), El Sherouk,Faculty of Engineering,Dept.of Mechanical Engineering,Cairo,Egypt,11837
5. Helwan University,Faculty of Technology & education,Dept. of Electrical Technology,Cairo,Egypt