An open extensible tool environment for Event-B

Abstract. We consider modelling indispensable for the development of complex systems. Modelling must be carried out in a formal notation to reason and make meaningful conjectures about a model. But formal modelling of complex systems is a difficult task. Even when theorem provers improve further and get more powerful, modelling will remain difficult. The reason for this that modelling is an exploratory activity that requires ingenuity in order to arrive at a meaningful model. We are aware that automated theorem provers can discharge most of the onerous trivial proof obligations that appear when modelling systems. In this article we present a modelling tool that seamlessly integrates modelling and proving similar to what is offered today in modern integrated development environments for programming. The tool is extensible and configurable so that it can be adapted more easily to different application domains and development methods.

Millipede - A Programming Environment providing Graphical Support for Parallel Programming

This paper describes Millipede, a graphical programming environment for a Transputer-based MIMD multiprocessor system. The environment provides a visual extension to the CSP/Occam programming model. Parallel programs are described as graphs, where the nodes denote parallel processes and the edges denote communication channels between processes. Graphs are constructed using a hierarchical graph editor which allows the user to group processes (nodes) together into hierarchical process structures. The highest level in the graph hierarchy, called the processor graph, also describes the processor network on which to execute the parallel program. Millipede contains tools for mapping processor graphs onto a reconfigurable transputer network and for configuring the target processor network accordingly. Monitoring data, produced and collected by a performance monitoring system, can also be presented upon the processor graph. 1 Introduction Programming multiprocessor systems is often associated..

Australian and Filipino students’ approaches to learning, conceptions of learning, and learner self-concepts : a cross-cultural comparison

. We describe the Refinement Calculator, a tool which support

An Open Extensible Tool Environment for Event-B

Abstract. We consider modelling indispensable for the development of complex systems. Modelling must be carried out in a formal notation to reason and make meaningful conjectures about a model. But formal modelling of complex systems is a difficult task. Even when theorem provers improve further and get more powerful, modelling will remain difficult. The reason for this that modelling is an exploratory activity that requires ingenuity in order to arrive at a meaningful model. We are aware that automated theorem provers can discharge most of the onerous trivial proof obligations that appear when modelling systems. In this article we present a modelling tool that seamlessly integrates modelling and proving similar to what is offered today in modern integrated development environments for programming. The tool is extensible and configurable so that it can be adapted more easily to different application domains and development methods.