Multilevel security for information retrieval systems

Bhavani Thuraisingham is a lead engineer with the MITRE Corporation where she has initiated R & D activities in secure distributed database systems, secure object-oriented database systems, and secure intelligent database systems. She is currently working on multilevel object-oriented data models, approaches to handle the inference problem, theory of concurrency control for multilevel databases, and modeling the security engineering process. Previously she was at Honeywell Inc. where she was involved with the design of Lock Data Views, and before that at Contra1 Data Corporation where she was involved with the development of CDCNET. She was also an adjunct professor of computer science and a member of the graduate faculty at the University of Minnesota. Dr. Thuraisingham received the M.S. degree in computer science from the University of Minnesota, MSc. degree in Mathematical Logic from the University of Bristol, and the Ph.D. degree in Recursive Functions and Computability theory from the University of Wales, Swansea. She has published over thirty journal articles in database security, distributed processing, artificial intelligence applications, and computability theory. She is a member of the Editorial Board of the Journal of Computer Security and serves as the program chair of the 6th IFIP 11.3 working conference in database security. Correspondence to: Bhavani Thuraisingham, The MITRE Corporation, Bedford, MA01730, USA.