Composite web services are defined using the industry-standard language BPEL (Business Process Execution Logic). There is a strong need for graphical and automated support for this task. It is explained how CRESS (Chisel Representation Employing Systematic Specification) has been extended to meet this challenge. CRESS supports straightforward graphical descriptions of composite web services. Sa...

To date, research on web-service discovery has followed the traditional component-discovery methodology and has examined signature matching, specification matching and information retrieval approaches, based on the interface description and documentation captured in WSDL. WSDL specifications, however, can be information poor, with standard data types, unintuitive identifiers for data, messages ...

Web Services integration using languages such as BPEL is to be applied not only on the Internet but also in pervasive networks using wireless mobile devices. However, in such a network it is necessary to deal with constraints in resources, typically the relative narrowness and instability of network connections. Our study adopts the mobile agent technology in response to this problem and presen...

In order to facilitate business collaboration and interoperation in virtual enterprises, it is crucial to discover appropriate business processes modeled in different languages and stored in different repositories. For this purpose, it is more efficient to register existent process models into a common process model registry, rather than defining numerous mappings from one modeling language to ...

This paper proposes a model-based lifecycle for the development of web services, which is based on two kinds of models, collaboration models and service ones. After agreeing upon a collaboration model, which is a public specification, each party can work out a service model and then can turn it into a process written in an orchestration language such as BPEL. As the conceptual gap between a ser...

To date, research on web-service discovery has followed the tradition of signature matching based on the interface description captured in WSDL. WSDL specifications, however, can be information poor, with basic data types, and unintuitive identifiers for data, messages and operations. The nature of the usage of the WSDL component in the context of a BPEL composition can be an extremely useful s...

Composite Web services technologies are widely used due to their ability to provide interoperability among services from different companies. Web services are usually stateless, which means that no state is stored from the clients viewpoint. However, some new applications and services have emerged, which require to capture the state of some resources. Thus, new standards to model Web services s...