About the Editor William D. Brown is the associate dean for research in the College of Engineering and a professor in the Department of Electrical Engineering at the University of Arkansas. Since 1991, he has been actively involved with the High Density Electronics Center (HiDEC) at the University of Arkansas--a center dedicated to advancing the state of the art of electronic packaging materials and technologies--in particular, multichip module technologies. Dr. Brown currently serves on the Executive Committee of the Board of Directors of the Electrochemical Society. In 1996, he received the Thomas D. Callinan Award by the Dielectric Science and Technology Division of the Electrochemical Society in recognition of outstanding contributions to the chemistry and physics of dielectric materials. He has published over 180 technical journal and proceedings articles, has contributed to eight books, and holds four U.S. patents. His research interests include electronic packaging technology; semiconductor materials (focusing on dielectrics) and devices; and solid-state and semiconductor physics. He holds memberships in IEEE, IMAPS, AVA, MRS, and ASEE.