M. Jaseemuddin

A bidirectional ring is proposed in this thesis as an interconnection network for shared-memory multiprocessors to improve their performance and reliability. It consists of two rings transmitting packets in opposite directions. The constituent rings are bit-parallel and use the …

Incorporating denial in an authorization model gives rise to the inference problem. The goal of secure query processing is then to derive inference free query. This thesis contributes to extending the view based authorization model with the denied views for specifying denials. I…