This paper distinguishes, at a high level, the differences between the architectures of workflow management systems. Its main function is to clarify the segmentation between autonomous and embedded workflow deployments. Workflow is the automation of a business process, in whole or in part, during which documents, information, or tasks are passed from one participant to another for action, accor...

Many important scientific and engineering problems may be solved by combining multiple applications in the form of a Grid workflow. We consider that for the wide acceptance of Grid technology it is important that the user has the possibility to express requirements on Quality of Service (QoS) at workflow specification time. However, most of the existing workflow languages lack constructs for Qo...

In an e-service environment, workflow involves not only a single organization but also a number of business partners. Workflow inter-operability is therefore an important issue for workflow enactment in such an environment. In this paper, we introduce a novel concept of workflow views as a fundamental support for E-service workflow inter-operability and for controlled visibility by external par...

This paper introduces a novel approach for flexible workflow management by applying constraint satisfaction problem solving. This enables us to support workflow deviations at runtime, react to upcoming events or unpredictable circumstances, but still support the user through worklist suggestions. The developed workflow engine is completely based on declarative workflow representations, whereas ...

As more Grid workflow applications are built, workflow sharing and reuse becomes important, because (i) building a Grid workflow application from scratch is still a challenging task for domain scientists, and (ii) reusing of established and validated workflows not only reduces workflow authoring time but also improves the quality of workflows. In this paper, we present a Grid workflow sharing a...

Although most existing teamwork management systems support userfriendly interface to some extent, few of them have take into consideration of the special requirements of workflow visualisation. This paper realises the unique features of visualisation for run-time workflow, i.e., workflow enactment and execution. We present a detailed discussion of the emerging problems against the general aesth...

Scientific workflow systems frequently are used to execute a variety of long-running computational pipelines prone to premature termination due to network failures, server outages, and other faults. Researchers have presented approaches for providing fault tolerance for portions of specific workflows, but no solution handles faults that terminate the workflow engine itself when executing a mix ...

Workflow management techniques are aiming at supporting business process across organization boundaries. Current techniques are lacking of the formalism tools to model and analyze workflows in a large scale. And current WFMSs do not have the ability to react to the response of another WFMS dynamically. Using Petri Nets as the modeling tools, we present the concept of Standard Workflow Structure...

Current workflow management systems are under dynamic evolution and tend to move to distributed business processes. Software agents and Peerto-Peer (P2P) technology are being recognized as a new approach to decentralized workflow management systems. Plugging Multi-agents into P2P workflow management systems can support run-time functions, workflow instance monitoring, adaptability and exception...

In an e-commerce or e-service environment, workflow involves not only a single organization but also a number of business partners. Workflow interoperability is therefore an important issue for workflow enactment in such an environment. In this paper, we propose the use of workflow views as a fundamental support for workflow inter-operability and for visibility by external parties. We present t...