An improved role hierarchy model is introduced against the drawback of RBAC96; some new concepts such as public permission, private permission and scope of inheritance are presented in the model.
提出了一种改进的角色层次模型用于改善RBAC96，并提出一些新的概念，比如：公有权限、私有权限和继承范围。
In this paper, we introduce the role-based access control model, analyse the role hierarchy model and the problem of private permissions in RBAC96, and point out the disadvantage of Sandhu s solution.
针对著名的 RBAC96模型的不足之处 ，结合私有权限、部门权限和权限属性变化等问题 ，对角色权限及角色层次关系进行了分析 ，提出了一个改进的角色层次化关系模型 。
Enterprise model management scenarios are broken down into a hierarchy with three levels, each of which is governed by a specific role within the enterprise.
企业模型管理分解为有三个层次的阶层，它们中的每一个是由企业内的特定角色管理的。
Based on the RBAC model and related role inheritance rules, concepts such as permission group and an improved role hierarchy and permission hierarchy model are introduced.
基于对RBAC模型及相关模型中角色继承规则，引入权限组等概念，提出了一个改进的角色与权限层次关系模型。
This dissertation defines the concepts such as role and the role hierarchy, proves the versatile of the IG-RBAC model, and presents the unification of concepts of roles, users and permissions.
论文定义了IG -RBAC模型中角色和角色继承的概念，证明了IG - RBAC模型的通用性，并提出以角色统一用户和权限的概念。
To adapt to the situation that a user could not complete the assigned task in time, a role-hierarchy-based task delegation model in workflow is proposed.
针对工作流系统中用户由于某些原因不能按时完成所分配任务的情况，提出了基于角色层次的任务转授权模型。
To adapt to the situation that a user could not complete the assigned task in time, a role-hierarchy-based task delegation model in workflow is proposed.
针对工作流系统中用户由于某些原因不能按时完成所分配任务的情况，提出了基于角色层次的任务转授权模型。
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