The Late Warren E. Stewart, PhD, was a professor of chemical engineeringat the University of Wisconsin–Madison, published numerous research articles, coauthored the landmark textbook Transport Phenomena, and was the recipient of many awards from AIChE, ACS, ASEE, and the University of Wisconsin. He was a fellow of the American Institute of Chemical Engineers and a member of the National Academy of Engineering.

Michael Caracotsios, PhD, is a Senior Modeling and Optimization Specialist in research and development at UOP LLC, a company that has been delivering cutting-edge technology to the petroleum refining, gas processing, petrochemical production, and other major manufacturing industries for over ninety years. He is also an Adjunct Professor of Chemical Engineering at the Northwestern University.