Dedication

To my mother, Mrs. Indu Srivastava, my father, Mr. Dilip Kumar, and to my lovely wife, Aishwarya, for their continuous support and encouragement. All the time that I have spent on this book should have been spent with them. For trips that we canceled and for weekends that I spent at my desk.To my family, teachers, and colleagues. They have extended their continuous support, provided critical feedback, and made it possible for me to focus on this book.