ANDRZEJ HANDKIEWICZ is a professor at the Faculty of Computing and Management, Poznan University of Technology, Poznan, Poland. After a brief research leave at the Swiss Federal Institute of Technology in Zurich in the early 1990s, Mr. Handkiewicz returned to Poznan University to become vice dean of the Faculty of Electrical Engineering, a title he held from 1993 to 1999. He has published over 100 technical articles in the areas of mixed-signal circuits; switched-capacitor (SC), switched-current (SI), and digital filters; and image compression and processing.