Dissertation writing is not stress-free. When you are just successful to write your dissertation, you may be concerned about the whole procedure of writing as well as the result you’ll obtain having skilled it. But I owe sincere appreciation to my research advisors, Dissertation Writers, who made me believe in myself and guided me complete the whole process of dissertation writing. I am assured that this dissertation would not have been possible without his support, accepting and help I felt when working on my research paper. I would also like to show my gratitude to my parents, friends, and colleagues for their help and proper support.