We make the case that Discrete Event System Speci cation DEVS is a universal formalismfor discrete event dynamical systems DEDS. DEVS o ers an expressive framework for modelling, ...
Bernard P. Zeigler, Hae Sang Song, Tag Gon Kim, He...
Increasingly, scalable distributed applications are being constructed by integrating reusable components spanning multiple administrative domains. Dynamic composition and deployme...
The functioning of modern IT-systems with autonomously acting components requires an elaborate access control system in which each participant can maintain her own trust structure....
Sandra Wortmann, Barbara Sprick, Christoph Kobusch
The PolicyUpdater1 system is a fully-implemented access control system that provides policy evaluations as well as dynamic policy updates. These functions are achieved by the use o...
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...