模型-视图-控制器：Rails的MVC框架(称为Action Pack)为基于Web的访问进行了定制并且实现了著名的被称为Model 2(参见参考资料)的设计策略。

Model-view-controller: The Rails MVC framework — called Action Pack — is customized for Web-based access and implements a well-known design strategy called Model 2 (see Resources).

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最后使用此策略构造了一个基于属性证书的授权和访问控制模型，能够灵活方便地实现电子政务中的安全访问控制。

At last, based on attribute certificate, a model is constructed to solve the authorization and access-control problem, to realize secure access-control in the electronic government.

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提出了一种基于委托逻辑的访问控制模型——dlbac，将凭证、RBAC元素和访问策略转化为统一的委托逻辑规则。

The paper puts forward a delegation logic based access control model (DLBAC). It translates the credentials, RBAC elements and access policies into unified delegation logic rules.

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