We present an approach towards a formal dynamic semantics for UML using ASM. We aim to remain as close as possible to the standard definition of UML and to cover the operational pa...
Abstract. In a trace-based world, the modular speci cation, veri cation, and control of live systems require each module to be receptive that is, each module must be able to meet i...
This paper describes concepts and features of a Web-based system called XRL/flower for carrying out Petri-net based workflows described with XRL (eXchangeable Routing Language). XR...
We present a new programming language designed to allow the convenient expression of algorithms for a parallel random access machine (PRAM). The language attempts to satisfy two p...
This paper presents the results of two separate studies into electronic book production. The Visual Book (Landoni, 1997) which explored the importance of the visual component of t...