Workflow management systems should efficiently manage workflow constraints such as time, resource, and cost during workflow executions. Especially, workflow time management is important in timely scheduling of workflow process execution, avoiding deadline violations, and improving the workflow throughput. Though there have been some studies on the dynamic deadline management in a workflow, the ...

The concept of the critical path has not been much addressed in a workflow even though it has been studied in many areas of computer engineering such as a directed acyclic graph. In this paper we first specify workflow control constructs which create workflow control structures used to describe business processes. And, we propose a method to find out the critical path in a time-constrained work...

Workflow graphs represent the main control-flow constructs of industrial process modeling languages such as BPMN, EPC and UML Activity diagrams, whereas free-choice workflow nets is a well understood class of Petri nets that possesses many efficient analysis techniques. In this paper, we provide new results on the translation between workflow graphs and free-choice workflow nets. We distinguish...

Influenced by the success of web service technologies for the development and deployment of IT services, the telecommunications R&D community starts adapting and building similar service delivery platforms, trying to manage the hard constraints of telco domains, such as: existence of heterogeneous protocols, extensive use of asynchronous communications and real-time delivery requirements. In th...

Currently some complex grid applications developing often need orchestrate multiple diverse grid services into a workflow of tasks that can submit for executing on the grid environment. In this paper, we present CROWN FlowEngine—a GPEL-based grid workflow engine for executing grid workflow instances. Besides basic functions of a conventional BPEL4WSbased workflow engine, CROWN FlowEngine has ma...

Service Invocation Interface is the interface which workflow engine uses to communicate with external application procedures. Analyzed the difficulties caused by diversity of external network resources to realize service invocation interface, took the description, search and evaluation of these resources into consideration, put forward an integrated service invocation strategy based on SOA stru...

There currently exists a gap between medical data and the clinicians who wish to use the data as the foundation for evidence-based medicine. The current disjointed workflow often requires statisticians to act as bridges in order to answer inquiries from clinicians. This can lead to suboptimal results as due to a gap between the fundamental understanding of clinical underpinnings and formal stat...

Workflow design is often an effort of distributed and heterogeneous teams, thus making tool support for collaboration a necessity. We present a novel concept of collaborative workflow design which combines cooperation and workflow model analysis. Workflow analysis is simplified using workflow metrics, which help identifying problematic aspects of the workflow model. Our findings are implemented...