Dedication
To the candles of my life, to the lights by whose inspiration I see my way to the best
To my late parents (may they rest in peace) To those who support me throughout my whole
life, to those who stand by me To my brothers and sisters
To those who share each moment of happiness and sadness as well, to the soul partners
To my friends
To those who have given me their time, patience and knowledge
To my teachers
I present this humble work Acknowledgments
First of all, I thank Allah, the almighty, for giving me the strength to carry on
this project and for blessing me with many great people who have been my greatest support in both my personal and professional life.
I would like to seize this opportunity to express my deepest regards and gratitude to my family who inspired me to seek for higher degrees in my major of knowledge. All of them consist the ladder by whom i go up to higher degrees.
Special thanks for all the friends who standed by me in this period of time specially those who lived with me in the same house ( Sumber Umble House), I tell them i m really grateful to you (starting with Ahmed El-Garrari and ending with Feras Saleh).
