The rapid emergence of GPS enabled devices, sensors and mobile equipment in commercial as well as government organizations has led to considerable research in time- and location-b...
Abstract. We present a modelling language, called X-Policy, for webbased collaborative systems with dynamic access control policies. The access to resources in these systems depend...
A significant deterrent to the ability to connect in a spontaneous manner in cross-enterprise collaborative applications is the difficulty in users from different domains being ab...
The advent of emerging technologies such as Web services, serviceoriented architecture, and cloud computing has enabled us to perform business services more efficiently and effec...
Delegation of authority is an important process that needs to be captured by any access control model. In role-based access control models, delegation of authority involves delega...