The application scenarios envisioned for ‘global ubiquitous computing’ have unique requirements that are often incompatible with traditional security paradigms. One alternativ...
The graphical formalism of Petri Nets (PNs) is established on a strong mathematical foundation that can be applied in systems speci®cation, analysis and veri®cation. However, cl...
Vasilis C. Gerogiannis, Achilles Kameas, Panayioti...
For multimedia interpretation, and in particular for the combined interpretation of information coming from different modalities, a semantically well-founded formalization is requ...
Accountability mechanisms, which rely on after-the-fact verification, are an attractive means to enforce authorization policies. In this paper, we describe an operational model of ...
Radha Jagadeesan, Alan Jeffrey, Corin Pitcher, Jam...
This paper describes a complete denotational semantics, in the UTP framework, of slotted-Circus, a generic framework for reasoning about discrete timed/synchronously clocked system...