We hereby extend our thanks and acknowledge the support provided for making this piece of work come to conclusion, to our worthy Head of the Department, Professor Anil Kumar Aggarwal and Professor SS Saluja. Last but not the least, I, Dr. Aabid Naik, would like to thank my parents for their unconditional support throughout my career and lately my wife Dr. Farheen Arief who has been an inspiration and a source of continuous support for me. Thank you all.