An important aspect for the acceptance of Service-Oriented Architectures is having convenient ways to help designers build secure applications. Numerous standards define ways to apply security in web services. However, these standards are rather complex and sometimes overlap, which makes them hard to use and may produce inconsistencies. Representing them as patterns makes them easier to underst...

Formal study of aspect-oriented languages is difficult because current theoretical models provide a range of features that is too limited and rely on encodings using lower-level abstractions, which involve a cumbersome level of indirection. We present a calculus, based on Abadi and Cardelli’s object calculus, that explicitly models a base language and a variety of point cut description language...

The service-oriented paradigm plays an increasingly significant role in designing and governing IT architectures in organizations. The identification of services belongs to the most important parts of the service management lifecycle and is essential for the successful implementation of service-oriented architectures (SOA). However, existing methods for service identification mostly ignore situ...

At present, web Service is the first choice to reuse the legacy system for the implementation of SOA. According to the status of the implementation of SOA and the status of the legacy systems, we propose four encapsulating strategies. Base on the strategies, we proposal the service-oriented encapsulating framework, the legacy system can be encapsulated by the service-oriented encapsulating laye...

Applications with run-time changing architectures constitute a challenge for both modelling and reasoning. Their description is not limited to the specification of a unique static topology but must cover the scope of all the correct configurations. We develop, in this paper, the concept of architectural styles to achieve this goal. We elaborate and specify the basic architectural styles for the...

When similar business processes are deployed in different organizations, one typically adapts manually a template process to the different execution environments and organizational needs. Service-Oriented Architectures facilitate the task of adaptation by exposing the functionalities needed by the process in an abstract way, decoupled from the implementation. Nevertheless, manual intervention t...

Service-oriented architectures evolved rapidly as the solution to the latest requirements for loosely-coupled distributed computing. Into this broad context several approaches emerged towards the discovery and the systematic composition/orchestration of services. One of the next challenges in this field is the maintenance of service-oriented architectures towards accomplishing the ultimate goal...

Scientific experiments are supported by activities that create, use, communicate and distribute information whose organizational dynamics is similar to processes performed by distributed cooperative enterprise units. On this premise, the aim of this paper is to apply existing enterprise models and processes for designing cooperative scientific experiments. The presented approach assumes the Ser...

Service oriented architecture is a new paradigm to exponentially reduce the development time of applications. In a service oriented computing environment, consumers interact with service providers through service brokers to get a service done. The presence of a central service broker is essential in SOA paradigm. The roles of a service broker can be explained in terms of functionalities such as...

As a matter of fact, SOA-based systems have a huge internal complexity due to plenty of services. On the one hand, this complexity enables and strongly supports the flexible alignment of the enterprise architecture with business processes. On the other hand, it requires a special management and control framework – provided by SOA Governance. For IT Governance, many accepted approaches exist. In...