Teaching Professor of Information Systems and Public Policy. He received his Ph.D. in 1992 from the University of Pennsylvania. His teaching interests include object-oriented programming and program design, uncertain reasoning, database confidentiality and evolutionary programming. Dr. Roehrig's current research applies mathematical programming and probabilistic methods to database confidentiality protection and intelligent databases. He has consulted for a number of government agencies such as the Bureau of the Census, Bureau of Labor Statistics and Executive Office of the President (Office of Management and Budget). Dr. Roehrig has an extensive list of publications in journals such as Operations Research, Management Science, and the Journal of Official Statistics.