有时候，用户会重点投入到这些层，作为获取他们组织建模和模型转换最佳实践的途径。
In some cases, customers have significant investment in these layers as a way of capturing their organization's best practices for modeling and model transformation.
分析了网格工作流中基于虚拟组织的组织建模，定义了虚拟组织中组织成员的各种关系；
The virtual organization in the grid environment is analyzed. The relationship of members in the virtual organization is defined.
最后给出一个基于组织建模的访问控制模型实现，并结合具体实例表明了该模型的可行性和有效性。
Finally, an instance of the access control model based on organization modeling is given, which is further used to verify the feasibility and effectiveness of the model.
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