For these problems, extended the original UCON, presented a comprehensive obligation model and finally proposed a general usage control enforcement model.
针对上述问题，给出了一个完整的职责模型，扩展了原有的UCON，并提出了一种通用的使用控制实施模型。
This paper analyzes the administrative model of RBAC and Usage Control (UCON) model, and points out the deficiency of UCON core model.
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。
The paper analyzes security of UCON model and puts forward the TUCON model based on Trusted Computing Module(TPM).
主要对UCON模型的安全性进行了分析，并将可信计算模块TPM引入UCON模型，构建了基于TPM的使用控制模型——TUCON模型。
Combining the feature of resource access control in the grid environment, this paper presents an access control model based on UCON, combined with XACML and SAML.
针对网格环境下资源访问控制的特点，提出了一个基于使用控制模型UCON，结合XACML和SAML的访问控制模型。
A policy language was introduced and its syntax and semantics were defined formally, and control policies were given according to action characteristics of core models of Usage control (UCON).
在给出了一种策略语言后，对其语法和语义进行了形式定义，并根据使用控制(ucon)模型族的行为特性给出了控制策略。
The UCON can not only solve the updates of subject and object attributes as a consequence of access, but also solve the continuity or immediate revocation of rights during the access.
这种模型包含授权、证书和条件组成成分，能解决作为访问结果而对主体客体属性进行更新的问题，以及在访问过程中对访问权限延续和即时回收的问题。
The UCON can not only solve the updates of subject and object attributes as a consequence of access, but also solve the continuity or immediate revocation of rights during the access.
这种模型包含授权、证书和条件组成成分，能解决作为访问结果而对主体客体属性进行更新的问题，以及在访问过程中对访问权限延续和即时回收的问题。
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