本文分析了多种主体之间的相互关系，针对隐私保护问题提出了可管理的使用控制模型。
This paper analyzes the administrative model of RBAC and Usage Control (UCON) model, and points out the deficiency of UCON core model.
使用控制模型是最近才提出的新型访问控制模型，它系统全面地定义了现代访问控制模型的框架。
Usage control model is a new access control model proposed nearly, it defines the framework of modern access control mod-el systematically and semantically.
使用控制模型是最近提出的新型访问控制模型，它系统全面地定义了现代访问控制模型的范畴和框架。
Usage control model is a new access control model proposed nearly, it defines the scope and framework of modern access control model systematically and comprehensively.
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