中文摘要：

作为网格环境的基本服务,网格工作流的大规模共享和重用是使网格成为问题求解的智能化集成环境的一项核心技术。工作流复合技术能够通过已存在的解决方法的重用简化复杂的科学应用问题,而基于语义的工作流复合降低了需要了解工作流语法细节才能重用网格工作流带来的复杂性。首先运用知识表达技术提出一个基于目标概念的网格工作流语义模板,其次介绍了一个实现基于语义的工作流复合的工作流管理原型系统,其中详细阐述了工作流建模过程中基于语义的工作流复合的实现。

英文摘要：

The large-scale sharing and reuse of Grid workflow, a basic grid service, are the core technologies in making grid an intelligentized and integrated environment for problem solving. Workflow composition can simplify the complex business logic or scientific application problems by reusing existing solution. A semantic-based approach for grid workflow composition reduces the complexity of workflow reuses which incurred from the knowledge required in details of syntactic expression. We described first a semantic grid workflow description template based on goal concept in use of knowledge expression technique in the paper, then presented a workflow management prototype system for achieving the semantic-based workflow composition, especially introduced in it the details of the realization of semantic-based workflow composition in workflow design tool.