In the last few years Component Based Development (CBD) and Aspect Oriented Programming (AOP) are gaining more and more relevance. Whilst CBD has been shown as a good mean to reuse designs and to build complex systems by the plug-and-play mechanisms, AOP makes code more reusable and complex systems more comprehensible. However, little efforts have been made to integrate both paradigms and conse...

Decentralized services, that is, services distributed across multiple, distinct spheres of authority, offer substantial challenges; particularly when we demand that they be both adaptive and secure. We consider decentralized services in the context of COmputAtional State Transfer (COAST), an architectural style for which service adaptivity and security are principal concerns, and discuss how th...

Current web has a vast number of applications available that offer users a wide domain of services. Most services, however, cannot be machine processed, which limits service composition for application and mashup development. Research on Semantic Web Services contributes to the improvement of interoperability and composition of applications and services. Many approaches cover service descriptio...

Software Architecture is a key artifact in the software development process, as it provides a bridge between the requirements of the system-to-be and its final design. Architectural description is therefore a critical step, which can be assisted by the use of Architectural Styles. Styles make it possible to reuse architectural knowledge by providing guidelines for its description, and by constr...

Domain-specific languages (DSL) receive a constantly growing attention in the area of software development. However, so far the documentation of reusable architectural knowledge for DSL design is rather limited. In this paper, we systematically explore the DSL design space by combining reusable architectural decision modeling and software patterns. In particular, we have explored three reusable...

We present a new architectural style for synchronous groupware that eases the transition from scenario based modeling to component design, and from component design to distributed implementation. The style allows developers to work at a distribution-independent conceptual level and provides for automatic or semi-automatic refinement of conceptual designs into appropriate distributed implementat...

Domain-specific languages (DSL) receive a constantly growing attention in the area of software development. However, so far the documentation of reusable architectural knowledge for DSL design is rather limited. In this paper, we systematically explore the DSL design space by combining reusable architectural decision modeling and software patterns. In particular, we have explored three reusable...

A question that frequently arises for architectural design is \When can I implement a design in style S1 using a design in style S2?" In this paper I propose a technique for structuring a solution to this kind of problem using the idea of substyles. This technique leads to a two-step process in which rst, useful subsets of a family of architectures are identied, and second, re nement rules spec...

The quality of an architectural design of a software system has a great influence on achieving non-functional requirements to the system, so formal evaluation and validation techniques to designed architectures are necessary in the early phase of development processes. In this paper, we present a technique for describing software architectures formally based on Coloured Petri Nets (CPNs) and a ...