Existing security models require that information of a given security level be prevented from “leaking” into lower-security information. High-security applications must be dem...
This article describes an ontological model of norms. The basic assumption is that a substantial part of a legal system is grounded on the concept of agency. Since a legal system a...
Abstract. Relational algebra has been a crucial foundation for relational database systems, and has played a large role in enabling their success. A corresponding XML algebra for X...
A Web service is frequently defined as browser-less access to content on a Web site. The industry’s focus to date has been on providing easy-to-use low-level libraries, tools a...
— The CoSMoS project aims to develop reusable tools and techniques for complex systems modelling and simulation. Using process-oriented software design techniques, we have built ...