Acknowledgement

First and foremost, thanks to ALLAH as without His overwhelming grace and mercy, I would not have been able to complete this thesis and the master degree. I would like to express my respect and sincere gratitude to Dr. Hamid Ali, associate professor and the chair of public policy and administration, the American University in Cairo who supervised and greatly helped me to continue and finish this thesis. I thank him for his expert guidance, constructive criticism and continuous encouragement. I have learned a lot from his patience and beloved way of teaching. I would like to express my gratefulness and appreciation to Dr. Khaled Amin, and Dr. Shahjahan Bhuiyan associate professors of public policy and administration, the American University in Cairo for their wise guidance and also for the time they spared during revising this thesis. They are actually great examples of outstanding professors at both ethical and scientific levels