David Hartvigsen received a Ph.D. in Mathematics from Carnegie Mellon University in 1984. After a stint on the faculty of the Kellogg Graduate School of Management at Northwestern University, he joined the Mendoza College of Business at the University of Notre Dame. His research interests are in the field of operations research and his work has appeared in a variety of mathematics and operations research journals. Professor Hartvigsen has taught Operations Management, Statistics, and Spreadsheet Modeling to traditional MBAs, executive MBAs, and undergraduate business majors. He has twice won the Outstanding Teacher Award in Mendoza’s Executive MBA Program.