Since the end of 2004, when the law decree about accessibility for Brazilian governmental websites came into force, the federal agencies have been struggling to conform to the nor...
Abstract— A distributed medium access control (MAC) algorithm for uplink OFDMA networks under the IEEE 802.16 framework is proposed and analyzed in this work. We present a simple...
Role-based access control (RBAC) has attracted considerable research interest. However, the computational issues of RBAC models are yet to be thoroughly studied. In this paper, we...
Abstract. We investigate a security framework for collaborative applications that relies on the role-based access control (RBAC) model. In our framework, roles are pre-defined and...
Isabel F. Cruz, Rigel Gjomemo, Benjamin Lin, Mirko...
The growing number of information security breaches in electronic and computing systems calls for new design paradigms that consider security as a primary design objective. This i...