He worked at the research Institute of Control Science in Moscow from 1940 until 1981 as a iunior researcher, a senior researcher, and the first director of the Computer Simulation Laboratory that he created. He received the U.S.S.R. State Prize in 1951 for creating the first analog computer. After immigrating to the United States in 1987, Prof. Kogan's research interests have transferred from automatic control, analog and hybrid computers, and computer simulation to the investigation of electrical wave propagation in excitable media (spe- cial trpe ofnonlinear distributed in space dynamic systems) using massively parallel digital computer systems. In conjunction with cardiologists, this study focuses on pe- culiarities of electrical wave propagation along healthy and diseased heart muscle to find the mechanisms of heart fibrillation and the corresponding preventing means. He hascontinued to teach and supervise graduate students at an age when most researchers have long retired. In 1994 he was honored with a special symposium at UCLA celebrating not only his early career but also his incredible level ofactivity since his immigration. He has published over 120 papers and is the author oftwo books. Dr. Kogan is an editorial board member of the Transactions of the Society for Computer Simulation and a member of the American Heart Association and the Society for Computer Simulation.