Acknowledgements

I would, first and foremost, like to thank the God Almighty who showed me the right path in life. I would like to thank all my teachers, especially my Ph.D. supervisor Prof. Vijayasree who truly guided me. My friend Dr. Ravi Paturi made me think about the need for a book of this kind, and I gratefully acknowledge his insight. I would also like to express my gratitude to Sri. Ch. Malla Reddy, Chairman of the Malla Reddy Group of Institutions, for encouraging me and to all my colleagues who helped me give shape to this book.

I am thankful to my parents for always guiding me towards the right path in life, and my mother, especially, for introducing me to the world of books. My husband Chandra Sekhar, my children, Hasita and Suhruth ...

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