Information systems are increasingly built using component models such as Enterprise Java Beans, COM+, or CORBA objects. Dynamically aggregated and composed Web services can be seen as a newly emerging research area for Service oriented architectures, which are combined with components. Our paper presents three main arguments: firstly, that composition of combined e-services and components is i...

This paper presents the uDSSP (“micro DSSP”) programming model which simplifies the development of distributed sensor network applications that make use of complex in-network processing. Using uDSSP, an application is composed of state-centric services. These services interact by accessing the state of other services or by subscribing to changes of that state. uDSSP supports heterogeneous netwo...

A fundamental feature of service oriented computing is that simple services need to be composed for generating complex services. This work focuses on the analysis and verification of behavior models of web services composition. In particular, we have to check that neither deadlock nor livelock occurs in this composition. Usually, the verification of such integration, with or without mediators, ...

The automated execution of business processes that are composed of individual web services has seen a growing importance throughout enterprise computing in the recent years. The Business Process Execution Language for Web Services (BPEL4WS) has become the predominant language to express such business process compositions. In this paper we present the design and implementation of a Robust Execut...

Run-Time Monitoring of SLA for Web Services Based Systems (WSBS) is an interesting as well as challenging topic in the field of Web Service Monitoring. Several works already address different aspects of the Run-Time monitoring. But most of the approaches are limited to composition layer (BPEL process). The behavior of composed web services is also affected by the behavior of other layers of the...

Creating new services through composition of existing ones is an attractive option. However, composition can be complex and service compatibility needs to be checked. A rigorous and industrially-usable methodology is therefore desirable required for creating, verifying, implementing and validating composed services. An explanation is given of the approach taken by CRESS (Communication Represent...

Choreography, orchestration and dynamic invocation allow new web services to be composed from existing ones. However, these compositions create service interdependencies that can be misused for financial fraud and other illegal purposes. When a misuse is reported, investigators have to navigate through collections of logs to recreate the invocation scenario in order to evaluate the misuse claim...

We present a Web service composition approach that relies on three selection criteria: execution cost, execution time, and location of provider hosts. A Web service is an accessible application that can be automatically discovered and invoked by other applications and humans. Web services can be composed into high level business-processes that users trigger in order to satisfy their needs. Beca...

Web services have received widespread attention and acceptance in the software engineering community. Automatic composition of services, to meet user’s requirements, is a powerful mechanism to ensure satisfaction of varied needs and thus enable the vision of Web services. Although Web services are equipped with the fundamental concepts and supporting technologies, the architectural style of the...

Interactive applications like Problem Solving Environments require on demand access to Web Services, where the services are autonomously discovered, composed, selected and invocated based on a description of requested capabilities. Semantic Web Services aim at providing semantically interpretable capabilities through the use of shared ontologies. We demonstrate how Grid Services for an interact...