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Research on sensor network has been focused at overcoming these deficiencies through more energy efficient routing, localization algorithms and system design. This paper tried to discuss some application related challenges, such as data integration, data storage, metadata generation, data fast query. We use analytical data management concept to create a virtual layer, which maps the real sensor network...
Exceptions cause temporal failures of Web-based systems to deliver continuous and responsive end-to-end services. On cloud platforms, resource provisioning and administration become less explicit, which entails techniques that can act on exceptions according to known strategies. In this paper, we propose a middleware-based approach that encompasses a healing process that links available strategies...
In this paper, we proposed an advanced face analysis platform for large-scale consumer photos, namely PFAP. Leveraging Client/Server architecture, the platform provides users high-performance face clustering and near-real time image retrieval service. Advanced face analysis schema, two-level parallel computing architecture and analysis as a service are three key innovations in PFAP. In face analysis...
Services composition is a challenging research issue which comprises services composition and verification. Existing solutions focus on either composition or verification. In this paper, we propose such a complete solution using temporal logic of actions (TLA). Firstly we model Web services as automata, and use TLA to describe it; then generate composition proposals in a generic conceptual service...
Quality of individual services is substantial to guarantee high performance and availability of overall composite service oriented systems. This requires the process of diagnosing service quality degradation and responding to it in a timely and non-stopping manner. This paper presents a modeling-based approach to coordinate the process of Web service management, configuring parameters or invoking...
Service capability, which represents the actions performed or the information delivered by a service, has become an important issue for service-oriented architecture. But most of the current semantic representation methods for service capabilities are usually based on top-down methodology and there is a gap between the semantic web services approach and the real features of web services. We aim to...
REpresentational State Transfer (REST) is the set of design principles behind the World Wide Web (WWW). REST treats all entities in the world as link-connected resources, and supports a resource-oriented architecture (ROA) for the design of applications. REST and ROA are responsible for many of the desirable quality attributes achieved in the WWW, such as loose-coupling (better adaptability) and interoperability...
With Web service technology widely accepted, Web service has become the standard of resources package in the Internet. The approach of exchanging information and transaction is also from a single device to the collaboration in the worldwide network. To face the challenges posed by today??s changing and uncertain business environment, traditional business system integration approaches are not sufficient...
The evolution of the Web 2.0 phenomenon provides a possible adoption of the RESTful services in reengineering web service. REST components concern the current or intended state of that resource with further transferring among components. A resource can have multiple representations. Itpsilas impossible to predetermine all possible representation of a resource during design of a system while it is...
With the rapid development of SOA and SaaS technologies, it's possible to construct a powerful e-services system rapidly with ready-to-use services. At the same time, it brings a big challenge to the architecting and design of e-services system compared with traditional software design. In this paper, we propose a novel approach for new generation e-services system design and evolution, which use...
Most of the current semantic representation methods for service capabilities are usually based on top-down methodology. We aim to develop services characterization methods with statistical study on existing Web services and to improve services capability representation with bottom-up software services comprehension. Two services characterization methods are proposed in our work: quantitative statistical...
Composing adaptive and self-managing Web services needs plug-and-play architecture so that the deployment of control components does not require changes made to the Web services and the host middleware platforms. This is especially challenging for Web services running on COTS middleware platforms, such as Microsoft.Net. In this paper, we propose an architectural solution that introduces a management...
Web service standards are being developed in a loosely coordinated and constantly evolving manner and there is a lack of Web service modeling approaches that efficiently reflect the status of the standardization. Consequently the development and deployment of Web services tend to be ad-hoc and platform-oriented. This introduces potential interoperability issues and maintenance overhead. This paper...
Most of the SOA (Service Oriented Architecture) applications are not brand new and usually evolved from legacy systems. Legacy systems carry out the enterprisepsilas most crucial business information together with business processes and many organizations have leveraged the value of their legacy systems by exposing parts of it as services. Most of current Web services are SOAP-RPC style services....
Web services (WS) are becoming more and more popular nowadays and service-oriented architecture (SOA) have been widely used in the construction of information systems. But most of the SOA applications are not brand new and usually evolved from legacy systems. Our research group is building a service identification framework used for the SOA reengineering of existing large-scale information applications...
An enterprise service bus (ESB) is a standards-based integration platform that combines messaging, web services, data transformation, and intelligent routing in a highly distributed environment. The ESB has been adopted as a key component of SOA infrastructures. For SOA implementations with large number of users, services, or traffic, maintaining the necessary performance levels of applications integrated...
Designing complex multi-tier applications that must meet strict performance requirements is a challenging software engineering problem. Ideally, the application architect could derive accurate performance predictions early in the project life-cycle, leveraging initial application design-level models and a description of the target software and hardware platforms. To this end, we have developed a capacity...
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