About the author DIEGO A. MURIO is Professor of Mathematics at the University of Cincinnati. A recipient of both the Taft and National Science Foundation grants, Professor Murio has published more than forty papers and serves as referee for the NSF as well as several mathematics journals. He is a member of SIAM and an executive member of the Annual Seminar on Inverse Problems in Engineering. Professor Murio received his doctorate in applied mathematics from the University of California at Berkeley in 1979.