His research interests focus on hardware and software fault-tolerant systems, network computing, performance evaluation, parallel computers, testing, and fault injection. He has chaired the 1996-1999 Annual IEEE Workshops on Fault-Tolerant Parallel and Distributed Systems, which are held in conjunction with the International Parallel Processing Symposium. He served as 1996 and 1998 Program and General Co-chair of the IEEE Workshop on Embedded Fault-Tolerant Systems, as he will also in 2000. He is a member of the IEEE, the IEEE Computer Society, and The New York Academy of Sciences.