Dr Dhirendra Kumar is retired from the North Carolina (NC) State University in the USA. He has worked as an engineer, technical adviser and program manager for Outboard Marine, John Deere, Pratt and Whitney, and Pitney Bowes. Since turning to academia, Dr. Kumar has been a researcher, senior lecturer, and visiting and adjunct professor, holding different posts at the universities of Iowa, Nebraska, Hartford, Central Connecticut and New Haven and NC State University. He has written books, instructional manuals, and many conference and journal papers and was a member of a number of advisory boards and scholarship committees. In his last assignment he advised undergraduate and graduate students on industrial projects and led projects in organizations external to NC State University.