I would like to express my deepest gratitude to my parents, whose unconditional love, constant encouragement, and unwavering support have been the foundation of all my achievements. Their sacrifices, values, and belief in my abilities have always inspired me to strive for excellence. Their patience and understanding during the most challenging phases of my academic and personal journey have provided me with the strength to persevere. It is because of their nurturing and guidance that I have been able to pursue this work with dedication and determination. This book is as much a result of their efforts and blessings as it is of my own. With immense love and respect, I dedicate this acknowledgement to them.