文章提出了一个具有主动适应机制的，适用基于角色的权限控制模型的系统的通用权限组件。
Therefore, this article proposes a role-based universally privilege controlled component which has the mechanism can actively adapt to different systems.
而基于角色的访问控制模型以角色为中介，将用户与权限逻辑隔离，但该模型不能处理有执行顺序的任务；
Role is introduced to separate user and privilege in role-based access control model, but RBAC can't directly control the permission for a sequence of events.
针对基于角色的访问控制(RBAC)模型中由于继承关系产生的子角色不能拥有私有权限问题进行了研究。
A problem that child role cannot obtain private permissions because of inherited relation in the Role-Based Access Control (RBAC) model is researched.
该模型采用基于角色的访问控制策略，实现了各业务系统间的一次登录、统一认证、统一权限管理和业务漫游功能。
And, it implements single sign-on, uniform authentication, uniform authorization management and business systems roam between different application systems.
模型引入客体与客体的关联，使得权限既可以通过角色也可以通过客体获得，并采用描述逻辑对模型访问控制过程进行了形式化描述。
In the model an associated object was presented, so the permissions can be obtained through roles and objects. The access control processes were described with the description logic.
该模型解决了传统的基于角色访问控制中的动态适应性差和最小权限约束假象的问题，用于分布式工作流管理系统，提高了安全性、实用性。
This model overcomes the weaknesses of the bad dynamic adaption and the fake constraint of the least privilege. It can enhance the security and practicability of the distributed workflow system.
本文就该模型在OA系统中的应用，提出了具体的实现方案，利用用户、角色、动态权限列表和动态菜单列表，实现了系统访问权限的灵活管理和动态控制。
The paper brings out a concrete realization program with the model for the application of this model in the OA system. By using lists of users, roles, dynamic privilege and dynamic men…
角色和权限逐层分离，带来整个模型系统设计的简易性和安全控制的灵活性，这是RBAC 模型最突出的特点；
Role is separated from authority layer, bring whole model getting simple and easy in system design and flexibility in security controlling, this is the most outstanding characteristic of RBAC model;
角色和权限逐层分离，带来整个模型系统设计的简易性和安全控制的灵活性，这是RBAC 模型最突出的特点；
Role is separated from authority layer, bring whole model getting simple and easy in system design and flexibility in security controlling, this is the most outstanding characteristic of RBAC model;
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