In traditional RBAC model, relationship between users and roles is static.
在传统的RBAC模型中，用户与角色间的关系是静态对应的。
And, the expanded RBAC model-ERBAC model and the formal description are given.
给出了扩展的RBAC模型—ERBAC模型，并给出了其形式化描述。
ACL model and RBAC model, which are usually used now in P2P, are described and analyzed.
分析了目前P 2 P网络常用的访问控制模型acl模型和rbac模型的优点和不足。
This paper intro - duces RBAC model and analyses access control model in grid environments.
首先介绍了RBAC模型，分析网格中基于RBAC访问控制的模型。
A sort of RBAC model for electric power MIS was designed on the basis of studying access control models.
本文在研究r BAC访问控制模型的基础上，设计了一种应用于电力MIS系统的RBAC模型。
Compared with the general RBAC model, this model can dynamically allocate roles based on user attributes.
与普通rbac模型相比，该模型可以动态根据用户属性分配角色。
RBAC model is the most popular access control strategy because of its flexibleness, convenience and security.
RBAC模型具有灵活性、方便性和安全性的特点，因此成为访问控制策略的首选。
Based on RBAC model, the paper adds user group, role group to extend the model from user, role and permission.
在RBAC模型的基础上引入用户组、角色组的概念，从用户、角色和权限三个方面对R BAC模型进行了扩展。
This article also introduces the design and implementation of the improved RBAC model in network file service system.
本文最后还介绍了改进型r BAC模型在网络文件服务系统中的设计和实现过程。
On the basis of RBAC model, this paper put forward a new model PRBAC, which was a twolevel model based on the post and role.
在RBAC模型的基础上，提出一种基于岗位和角色的两级访问控制模型——PRBAC。
Through introducing the concept of resource into the traditional RBAC model, a databased-based fine grain RBAC control is implemented.
提出将资源概念引入传统RBAC模型中，实现一种基于数据库的动态细粒度rbac控制。
But the traditional RBAC model doesnot give the method to control the role assignment and it cannot assure the least priority of the role's permission.
但传统的RBAC模型既没有给出控制角色指派的方法，也不能保证角色许可最少优先原则。
A novel method for designing and implementing database safe access control in a statistic management system is proposed on the basis of analyzing RBAC model.
通过分析r BAC模型结构，提出并设计实现了统计管理系统中数据库安全访问控制的新方法。
Present the RBAC model with this well-known modeling language UML , and specify the RBAC model with three views: static view, functional view, and dynamic view.
提出从静态、功能需求、动态观点来分析模型，并利用UML来表示基于角色访问控制模型。
According to this disadvantage, a user properties oriented RBAC model is put forward. The attributes collection and constraints are added based on the original model.
针对这一缺点，提出了一种面向用户属性的RBAC模型，在原有RBAC模型的基础上添加了属性集合和约束。
Based on the classifying of the protected documents, a DR-RBAC model is defined, and its data-flow diagram and two examples of PolicySets expressed by XACML are given out.
在对文档进行分类的基础上，定义了一种双角色的基于角色的访问控制模型，并给出了此模型的数据流图及部分以XACML形式表示的控制策略。
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。
Based on RBAC model, this paper introduces negative authorization into the user assignment and permission assignment, and discusses their realizing approaches and features.
本文在RBAC模型基础上，分别在用户分配和权限分配中引入了负授权，讨论了负授权的实现方式及其特点。
Currently, there are some models that extend RBAC model to support role delegation. However, their supports for constraints on the usage of delegated roles are very limited.
目前已有一些模型扩展了RBAC模型以支持角色委托，但是这些模型对委托限制的支持非常有限。
In Figure 2, users Admin1, Admin2 and Admin3 are logical volume administrators and are ideally designated to manage any of the logical volume groups (vg1, vg2 and vg3) in RBAC model.
在图2中，用户Admin1、Admin2和Admin3均为逻辑卷管理员，在RBAC模式下可管理任其一个逻辑卷组(vg 1、vg 2或vg3)。
It also combines dispatching business in public traffic enterprises and RBAC model, localized the latter one, and then put forward the ERBAC model which meets the systematic demand.
将公交企业具体的调度业务与RBAC模型思想结合，对RBAC模型进行了本地化改造，提出了适合系统需求的ERBAC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。
This model extends the traditional RBAC model with user credentials, temporal constraints and XML document classification to enforce a content-based time-aware multi-granularity access control.
该模型从用户证书、时间约束、XML文档分类等方面对传统的RBAC模型进行了扩展，以实现基于内容的时间上下文敏感的多粒度访问控制。
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；
In this article, we'll review sudo and then outline how you can migrate to RBAC to improve your organization's administration model.
在本文中，我们将首先检查sudo，然后概述如何迁移到RBAC来改进组织的管理模型。
In this paper we introduce an Object-Oriented and a novel role administrative model of RBAC. In this way, we simplify the administration and implementation of systems.
已有的RBAC模型对于角色的授权是简单的、不全面的，我们提出了对象式以及具有管理功能的角色管理模型。
This paper analyzed the problems existing in administration of authorization in MIS and applied the RBAC in MIS, then presented a logic model of implementation.
文中分析了目前MIS实施中权限管理存在的问题，并将RBAC应用于管理信息系统中，给出了实现的逻辑模型。
So the article mainly consists of two parts: the Information System Risk Analysis and security Management and the design of the security model based on the RBAC.
因此，本文主要分为两个重要的组成部分：信息系统的风险分析和管理过程及基于RBAC的安全模型设计。
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.
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.
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。
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