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Service process has been increasingly adopted in various domains with the development of service computing. As more and more service processes come to have complex business logic for changing business requirements, service process must have the ability to configure itself automatically in a certain business context. In this paper, we provide an approach to realize service process's self-configuration...
Software Product Lines (SPLs) engineering aims to develop similar software systems by sharing a common set of software assets. Service-Oriented Computing (SOC) uses services as fundamental elements for developing applications. SOC provide dynamic capabilities that are needed in many product-lines. SPLs provide useful mechanisms for modeling dynamic applications implemented through service compositions...
When supporting ad-hoc collaboration in heterogeneous environments, one has to be able to optimistically cope with failures in order to support reliable cooperation. Composite services technically provide suitable means to implement ad-hoc cooperations. We explore transactional properties of services at runtime to ensure correct execution of workflows by still respecting the autonomy of participants...
Making collaborative work environments fit the needs of changing collaboration situations is currently supported by collaborative tailoring or customization approaches requiring end-users to actively take initiative of tailoring or customization. We propose to avoid this overhead by (1) context-based adaptations of collaboration environments and (2) supporting a process model guiding the interaction...
Mashups propose a lightweight integration of applications by combining distributed web resources. Their development is aided by a number of visual tools and platforms. However, they all imply a server-side mashup execution. Since data, application logic, and UI can all be provided as a service, we argue that the client can be the ideal integration platform for such applications. In this paper we highlight...
Nowadays virtual communities are spread all over the web, providing users a cyber-place to share a common purpose and interact with each other around the world. These environments face new challenges in order to provide their users with better tools to interact and fulfill the environment's goals. In this context we propose a model to create regulated interaction environments based on the theater...
Many computer systems and applications must be “non-stop” that is, provide continuous and uninterrupted services. Meanwhile, Service-Based Applications (SBAs) should be dynamic in terms of adap¬tability in order to operate and evolve in highly dynamic environments. Thus, in general, non-stop service-based applications require the ability to be updated without interruption. Flurry of researches on...
In many cases, we would like to enhance the predefined adaptability of a running application, for example, to enable it to cope with a strange environment. To make such kind of runtime modifications is a challenging task. In existing engineering practices, the online policy upgrade approach just focuses on the modification of adaptation decision logic and lacks system-level means to assess the validity...
Workflow technology has recently been introduced in pervasive and mobile computing due to its inherent capabilities of task coordination and interoperability among heterogeneous resources. Pervasive and mobile applications require context i.e. situation information for adaptation to efficiently achieve goals. Current workflow designers are very useful in designing rigid or evolving process models...
Developers of software engineering tools are facing high expectations regarding capabilities and usability. Users expect tools tailored to their specific needs and integrated in their working environment. This increases tools' complexity and complicates their customization and deployment despite available mechanisms for adaptability and extensibility. A main challenge lies in understanding and managing...
In this paper, we present a model to dynamically compose adaptable context-dependent applications using context conditions. The contributions of this work are: designing components as compositions of behaviour; embedding decision points in the component at development time to determine component behaviour; supporting reconfiguration of decision policies at runtime to adapt behaviours. The approach...
Since software systems need to be continuously available under varying conditions, their ability to evolve at runtime is increasingly seen as one key issue. Modern programming frameworks already provide support for dynamic adaptations. However the high-variability of features in Dynamic Adaptive Systems (DAS) introduces an explosion of possible runtime system configurations (often called modes) and...
Today's society increasingly depends on software systems deployed in large companies, banks, airports, and so on. These systems must be available 24/7 and continuously adapt to varying environmental conditions and requirements. Such dynamically adaptive systems exhibit degrees of variability that depend on user needs and runtime fluctuations in their contexts. The paper presents an approach for specifying...
Our research shows that autonomic behavior can be achieved by leveraging variability models at runtime. In this way, the modeling effort made at design time is not only useful for producing the system but also provides a richer semantic base for autonomic behavior during execution. The use of variability models at runtime brings new opportunities for autonomic capabilities by reutilizing the efforts...
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