A top-down query processing method for first order deductive databases under the disjunctive well-founded semantics (DWFS) is presented. The method is based upon a characterisation...
We report on the development of a visual programming environment for building applications for execution on a range of parallel computing platforms. This work exploits the dataflo...
We introduce a language for creating and manipulating certificates, that is, digitally signed data based on public key cryptography, and a system for revoking certificates. Our ap...
Identifying the source of space faults in functional programs is hard. The problem is compoundedas space usage can vary enormously from one implementation to another. We use a ter...
We survey logic-based and automata-based languages and techniques for the speci cation and veri cation of real-time systems. In particular, we discuss three syntactic extensions of...