定义工作流模型资源为网格资源，并遵照网格资源描述的规范描述工作流模型资源，实现从网格基础设施资源层支持协同工作流；
The workflow model is defined as the grid resource, and described according to the grid resource definition. The workflow-collaboration is implemented from the grid base level.
在此基础上，提出了面向服务的工作流性能评价模型，并将战略层、业务层、服务层与IT层的性能很好地加以结合。
Then, a service-oriented workflow performance evaluation model was put forward, which combined the performances of strategic layer, business layer, service layer and IT layer.
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