Santosh K Gupta is Professor of Chemical Engineering at the Indian Institute of Technology, Kanpur, India. A graduate of the same institute, he obtained his PhD from the University of Pennsylvania, Philadelphia, USA, in 1972. His research interests include modelling, optimisation and on-line optimal control of polymerisation reactors, and modelling and multi-objective optimisation (using genetic algorithm) of chemical engineering systems. He has published over 200 papers in these areas, and has also authored/co-authored various other textbooks. He has been Visiting Professor at the Department of Chemical Engineering, University of Notre Dame, IN, USA (1985-87), National University of Singapore (1998-99), University of Wisconsin, Madison, USA (1999-2000), and IIT Bombay, Mumbai (2008-2010), where he was the L & T Chair Professor of Chemical Engineering. He has received several awards and honours, including the honoree in two festschrift sessions in the Catalysis and reaction Engineering Division, AIChE Annual Meeting, Minneapolis, 18 Oct2011, and the honoree in the festschrift issue of the journal, Polym. Eng. Sci. (Volume 51, No. 10, 2011).