Role Based Access Control (RBAC) has been introduced in an effort to facilitate authorization in database systems. It introduces roles as a new layer in between users and permissions. This not only provides a well maintained access granting mechanism, but also alleviates the burden to manage multiple users. While providing comprehensive access control, current RBAC models and systems do not tak...

The recent upsurge in interest in autonomous robots for combat applications has focused considerable attention on several of the obvious technical issues (e.g, target recognition, autonomous navigation, route planning). However, several technical issues exist which remain unapproached and, in some cases, even unacknowledged by the robotics community. This paper explores three such issues: (1) r...

Two separate groups of reviewers were involved in the Consensus Development Conference on Diagnosis and Management of Dental Caries Throughout Life. The training of the independent reviewers and the methodology they used differed from that of the team at the Research Triangle Institute and the University of North Carolina at Chapel Hill (RTI/UNC).