The paper presents a method for designing a production process simulation system using workflow management technique, which consists of three parts: process model, organization resource model and workflow engine. Based on this method, we put forward a production process simulation system structure, and discuss the function of the key modules in detail. At last we present a sample in practical a...

The paper presents an architecture of a Petri net based framework for modelling and control of workflow processes. It focuses on the PNEditor module and briefly discusses workflow engine based on the models designed using the PNEditor. Then the paper describes method of synthesis Separating feasible places and an algorithm for reducing the number of places in the resulting Petri net.

Based on the analysis of limitation of existing workflow management system, a workflow management system based on micro kernel is researched and designed. In this system, a micro kernel based workflow engine is designed by separating the service implementation and activity scheduling; the workflow engine interface is defined to connect the related workflow components seamlessly; and then graphi...

This paper presents the SWFL workflow engine, a general workflow framework that meets the needs of business processes as well as scientific computing processes with fine multi-level parallelism supports. The workflow description language, SWFL, follows a graph-oriented model to specify workflow processes composed of services. The workflow engine provides an efficient enactment environment for S...

When orchestrating highly distributed and data-intensive Web service workflows the geographical placement of the orchestration engine can greatly affect the overall performance of a workflow. We present CloudForecast: a Web service framework and analysis tool which, given a workflow specification, computes the optimal Amazon EC2 Cloud region to automatically deploy the orchestration engine and ...

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...

In the D-Grid project BIS-Grid we developed the BIS-Grid Workflow Engine in order to utilize a common WS-BPEL workflow engine for scientific workflow execution in WSRF-based Grid infrastructures. The BIS-Grid Workflow Engine itself is built on the Grid middleware UNICORE 6 to benefit from its security mechanisms and to automatically gain interoperability with UNICORE 6-based Grid infrastructure...

In this paper, we propose a framework supporting dynamic interoperation between heterogeneous workflow systems and workflow-based dynamic Enterprise Application Integration (EAI). To this end, based on Subflow Task Model and Multi-Tiered Dynamic State Transition Model, four major components are defined: The workflow engine, Adapter, Service Interface Repositories (SIRs), and XML messages. Workf...