* This work was partially supported by the German Ministry for Research and Technology (BMBF) , project MOKASSIN under grant number 01 IS 601 D. Abstract Dynamic evolution of workflow models due to process (re)engineering activities and dynamic changing situations of the real process is one of the most important challenges in workflow management. In this paper, we present an approach for the ma...

In many distributed systems robustness is a major concern since network nodes might fail spontaneously. Such failures can be a major problem when a workflow needs to be run on a set of unreliable and distributed nodes. Replication is a widely used architecture paradigm to increase system reliability. This thesis addresses robustness of workflow execution in distributed systems using replication...

Workflow management systems provide a flexible way of implementing business processes. Structural conflicts such as deadlock and lack of synchronization are commonly occurring errors in workflow processes. Workflows with structural conflicts may lead to error-prone and undesirable results in business processes, which may in turn affect customer satisfaction, employee productivity, and integrity...

Mining, discovering, and integrating process-oriented services has attracted growing attention in the recent year. Workflow precedence graph and workflow block structures are two important factors for comparing and mining processes based on distance similarity measure. Some existing work has done on comparing workflow designs based on their precedence graphs. However, there lacks of standard di...

Workflows have been successfully applied to express the decomposition of complex scientific applications. This has motivated many initiatives that have been developing scientific workflow tools. However the existing tools still lack adequate support to important aspects namely, decoupling the enactment engine from workflow tasks specification, decentralizing the control of workflow activities, ...

Business Process includes workflows which integrated some critical activities among different departments. Workflow management is a quickly evolving technology that can assist business process reengineering and accomplish full or partial automatic processing of a business. Workflow plays a critical role in the ERP (Enterprise Resources Planning) system since it aims to achieve maximum satisfact...

In this paper, we describe a distributed transactional workflow system named ICU/COWS, which supports multiple workflow types of large scale enterprises. The system aims to support the whole workflow for large scale enterprises effectively within a single workflow system and the system is designed to satisfy several design goals such as availability, scalability, and reliability. Transactional ...

This paper presents the architecture of a novel Peer to Peer (P2P) workflow management system. The proposed P2P architecture is based on concepts such as a Web Workflow Peers Directory (WWPD) and Web Workflow Peer (WWP). The WWPD is an active directory system that maintains a list of all peers (WWPs) that are available to participate in Web workflow processes. Similar to P2P systems such as Nap...

A central problem in workflow concerns optimizing the distribution of work in a workflow: how should the execution of tasks and the management of tasks be distributed across multiple processing nodes (i.e., computers). In some cases task management or execution may be at a processing node with limited functionality, and so it is useful to optimize translations of (sub-)workflow schemas into flo...