Computer Aided Engineering Design

To my parents, all my teachers and for my son Suved when he grows up

Anupam Saxena

To my mother, Charushila Devi, an icon of patience

To my eldest brother, Dhanendra Sahay who never let me feel the absence of my father
To my brother, Dr. Barindra Sahay for initiating me into the realm of mathematics
To my teachers at McMaster University and University of Waterloo
To my wife, Kusum, children Urvashi, Menaka, Pawan and the little fairy
Radhika (granddaughter)
Birendra Sahay