The Unified Modeling Language (UML) is likely to become an important industry standard language for modelling object-oriented systems. However, its use as a precise analysis tool ...
In applications like nancial trading, scheduling, manufacturing and process control, time based predicates in queries and rules are very important. There is also a need to dene ...
This paper presents a language, based on transaction logic, for specifying dynamic authorisation policies, i.e., rules governing actions that may depend on and update the authoris...
Abstract. We study the problem of checking the competence of communicative agents operating in a global society in order to receive and offer electronic services. Such a society wi...
The B-Method is a state-based formal method that describes behaviour in terms of MACHINES whose states change under OPERATIONS. The process algebra CSP is an event-based formalism ...