Workflow management systems support an efficient, largely automated execution of business processes. If a workflow management system is used to implement a computer supported business process from scratch, all the functionality of the workflow management system can be fully exploited. In particular, the control flow will be completely specified in the workflow management system’s specification ...

The automated enactment of processes through the use of workflow management systems enables the transfer of control flow from application systems to workflow management systems. By now a large number of different systems, that follow different interpretations of the workflow paradigm, are available. This leads to the problem of selecting the appropriate workflow management system for a given si...

Today’s workflow management systems have problems dealing with both ad-hoc changes and evolutionary changes. As a result, the workflow management system is not used to support dynamically changing workflow processes or the workflow process is supported in a rigid manner, i.e., changes are not allowed or handled outside of the workflow management system. This paper addresses two notorious proble...

In this paper we discuss how an e-learning environment based on Learning Objects can be extended to cope with testing learners achievements. Provided that the learning management system is powerful enough to be able to handle complex relationships and process support, we found that the learning object framework is expressive enough to encapsulate reusable tests. By leveraging on a workflow engi...

† Part of this work was done at AIFB (University of Karlsruhe, Germany) and LSDIS (Univeristy of Georgia, USA) during a sabbatical leave. Abstract Traditionally, workflow management systems are used to support static processes, i.e., processes which do not change frequently. This has limited the scope of workflow management. Moreover, the networked economy of the new millennium requires workflo...

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...

The Workflow Management System AltaVista Works has been extended to be able to process workflows in a distributed, partly even parallel manner. Build-time data are replicated over all participating workflow servers. The distribution of workflow execution is based on migration. Instead of the usual, static pre-partitioning, highly dynamic management of distribution is applied.

Liaison is a workflow management model that supports complex workflows and human resources management. Liaison System is the implementation of the Liaison Model. This paper discusses the architecture of the Liaison Workflow Engine, the core of the Liaison Workflow Management System, which is responsible for controlling workflows. Besides managing and controlling complex workflows and human reso...

Traditionally, workflow management systems (WfMS) are heavy monolithic software with vendor specific protocol. The lack of standardisation become a real problem for interoperability. To face this problem, vendors, users and researchers founded the Workflow Management Coalition (WfMC) and defined the workflow reference model [3]. Based on this work, the OMG designed the Workflow Management Facil...

Peer-to-Peer (P2P) technology is being recognized as a new approach to decentralized workflow management systems to overcome the limitation of the current centralized ClienUServer workflow management systems. However, the lack of supporting adaptability and exception handling at instance level of this approach seems to be responsible for the weakness of the P2P workflow management systems. Dyna...