DWIGHT F. MIX, PhD, PE, is Professor Emeritus at the University of Arkansas, where he taught from 1965 to 1998 in the Department of Electrical Engineering. Kraig J. Olejniczak, PhD, PE, is Dean of the College of Engineering at Valparaiso University. He served on the faculty of the University of Arkansas Department of Electrical Energy from 1991 to 2002.