Eckehard Sch ll was born on February 6, 1951 in Stuttgart, Germany. He received his Diplom degree in physics (M. Sc.) from the University of Tuebingen, Germany, in 1976, the Ph. D. degree in applied mathematics from the University of Southampton, England, in 1978, and the Dr. rer. nat. degree and the veni legendi from Aachen University of Technology (RWTH Aachen), Germany, in 1981 and 1976 respectively. During 1983-1984 he was a Visiting Assistant Professor in the Department of Electrical and Computer Engineering, Wayne State University Detroit, Michigan. Since 1989 he has been a Professor The...