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A case study on behavioural modelling of service-oriented architectures

Rychly M.

e-Informatica Software Engineering Journal

2010

Vol. 4, nr 1

71--87

Service-oriented architecture (SOA) is an architectural style for software systems' design, which merges well-established software engineering practices. There are several approaches to describe systems and services in SOA, the services' derivation, mutual cooperation to perform specific tasks, composition, etc. In this article, we introduce a new approach to describe behaviour of services in SOA, including behaviour of underlying systems of components, which form the services' implementation. The behavioural description uses the process algebra _-calculus and it is demonstrated on a case study of a service-oriented architecture for functional testing of complex safety-critical systems.

On abstraction and interpretability: a behavioural perspective

Pfaff R., Burnham K. J.

Systems Science

2009

Vol. 35, no 2

19-26

The process of abstracting physical systems to obtain models and interpret these for the desired purpose is considered from a perspective originating from the behavioural framework. It is pointed out that for the purpose of modelling regenerative processes or passive controllers, the behavioural framework and bond graphs are well suited. The reader is introduced to modelling of dynamical systems in the behavioural framework; in this context system representations predominant in the behavioural framework are presented. In addition, the concepts of interconnection and control by interconnection are shown together with a numerical simulation and an illustrative example. Bond graphs for graphical modelling of systems without a priori assumptions of causality are presented, with the key concepts illustrated by repeating the illustrative example from the behavioural modelling section by help of bond graphs. A comparison shows that manifest behaviours of interconnected systems can be stated directly from the corresponding bond graph. This shows the common applicability of both techniques to handle real world modelling and control problems.