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The recent evolution of internet technologies, mainly guided by the Extensible Markup Language (XML) and its related technologies, are extending the role of the World Wide Web from information interaction to service interaction. This next wave of the internet era is being driven by a concept named Web services. The Web services technology provides the(More)
With the advance of the Cloud Computing paradigm, new challenges in terms of models, tools, and techniques to support developers to design, build and deploy complex software systems that make full use of the cloud technology arise. In the heterogeneous scenario of this new paradigm, the development of applications using cloud services becomes hard, and the(More)
The current sensor networks are assumed to be designed for specific applications, having data communication protocols strongly coupled to applications. The future sensor networks are envisioned as comprising heterogeneous devices assisting to a large range of applications. To achieve this goal, a new architecture approach is needed, having application(More)
Wireless Sensor Networks (WSNs) are distributed systems whose main goal is to collect and deliver data to applications. This paper proposes a reflective, service-oriented middleware for WSN. The middleware provides an abstraction layer between applications and the underlying network infrastructure and it also keeps the balance between application QoS(More)
The current wireless sensor networks (WSN) are assumed to be designed for specific applications, having data communication protocols strongly coupled to applications. The future WSNs are envisioned as comprising of heterogeneous devices assisting to a large range of applications. To achieve this goal, a flexible middleware layer is needed, separating(More)
The Web services technology provides the underpinnings to a new business opportunity, i.e., the possibility of providing value-added Web services. However, building value-added services on this new environment is not a trivial task. Due to many singularities of the Web service environment, such as the inherent structural and behavioral heterogeneity of Web(More)
One of the major challenges for the adoption of the service-oriented architecture (SOA) is the service identification phase that aims to determine which services are appropriate to be implemented. In the last decade, several service identification methods (SIMs) were proposed. However, the service identification phase still remains a challenge to(More)
Mobile systems characterize by dynamic environments, thus requiring adaptive and context aware mechanisms to perceive changes in the execution context and to dynamically adapt to them. We propose a framework for developing adaptive context aware applications which employs aspect-oriented techniques and dynamic composition to modularize the adaptive behavior(More)
The use of Representational State Transfer (REST) as an architectural style for integrating services and applications brings several benefits, but also poses new challenges and risks. Particularly important among those risks are failures to effectively address quality attribute requirements such as security, reliability, and performance. An architecture(More)
SUMMARY Growth of genome data and analysis possibilities have brought new levels of difficulty for scientists to understand, integrate and deal with all this ever-increasing information. In this scenario, GARSA has been conceived aiming to facilitate the tasks of integrating, analyzing and presenting genomic information from several bioinformatics tools and(More)