First and foremost, praise and thanks be to God Almighty for his abundance of blessings throughout our research work to complete the research successfully.
We would like to express our deep and sincere gratitude to our research supervisor Dr. Dalida Adel El-Dawayaty, for giving the opportunity to do research and providing invaluable guidance throughout this research. Her vision, sincerity and motivation have deeply inspired us. She has taught us the methodology to carry out the research and to present the research works as clearly as possible. It was a great privilege and honor to work and study under her guidance. We are extremely grateful for her helpful advices and comments.
Finally, we are extending our thanks to our TAs: Karim Farag, Amera Omar & Bassant Mamdouh for their support and kindness during our research work.
