This paper proposes the role concept, discusses the dynamic access control of role-based workflow status, and describes and analyses the formal model.
本文将角色的概念加入进来，讨论了基于角色的工作流状态的动态访问控制，并对其模型进行了形式化描述和分析。
In the problem of dynamic access control, we present a secure and efficient scheme, which is based on discrete logarithms and polynomial interpolation.
在用户层次结构的动态存取控制问题上，本文提出了一种安全有效的方案。
The protocol the author designed for SuperPON, provides half-static and demand dynamic access control method according to different delay requirements.
作者设计的协议中，根据不同时延要求，提供半静态和动态的带宽分配方法，满足不同业务的需求。
However, RBAC and GRBAC are difficult to meet dynamic access control requirements because they are essentially established on the static subject-object view.
然而，RBAC和GRBAC本质上是建立在静态的主体-客体访问控制思想之上的，难以满足动态访问控制的要求。
How to realize dynamic access control based on state through the collaboration among role-flow, control-flow, time-flow and action-flow is analyzed in particular.
重点分析了如何通过角色流、控制流、时间流和动作流的相互配合来实现基于状态的动态访问控制。
How to maintain integrity and validity of security information is studied through policy space and a dynamic access control algorithm based on security information is presented.
基于此，研究了如何维持在策略空间穿越中的安全信息的完整性与有效性，提出了基于安全信息的动态访问控制算法。
By using access control matrix, we can achieve the real time and dynamic control of task, which ensures the system security.
通过引入访问控制矩阵，实现了对任务的实时、动态的控制，从而确保了系统的安全。
Task based access control (TBAC) is an initiative security model, where task is focus of work and dynamic authorization is used.
基于任务的授权控制（TBAC）则是以任务为中心，并采用动态授权的主动安全模型。
The system realizes the access control based on ACL, support dynamic configuration and manage about department, user, group and access authority.
系统实现了基于ACL的访问控制，支持部门、用户、群组及用户访问权限的动态配置与管理。
The architecture of access control model is independent of the implementation, which makes the system be able to adapt to various security requirements and dynamic changes.
该系统的访问控制框架的结构与具体实现方法无关，能够满足群应用的不同安全要求以及动态群对安全性要求的变化。
This paper describes the policy of resource access control with capability, so the policy has dynamic maintenance characteristic.
提出利用权能对资源访问控制策略进行描述，动态维护。
To address this thesis, this paper focuses on the dynamic and heterogeneous characteristic of Grid, and presents a new access control method based on semantic technology.
为了更好地解决网格系统中的访问控制问题，本文从网格系统的动态性和异构性出发，提出了一种新的基于语义技术的网格访问控制方法。
Therefore, to satisfy the dynamic characteristics of the system, dynamic model are needed within function of access control.
因此，要满足系统权限的动态特性，需要同样具有动态功能的访问控制模型。
Its can be used for reference by their practical application in Role-Based Access Control, especially in dynamic environment.
本文为在动态环境下应用的访问控制机制提供了有意义的参考。
Trust management is a new kind of access control method which is dynamic and scalable.
信任管理是一种具有动态可扩展性的新型访问控制方法。
Task based Access Control Model is task centered and offers dynamic authorization , so it belongs to the active security model.
基于任务的访问控制模型是一种以任务为中心，并采用动态授权的主动安全模型。
In this paper, we present an access control scheme that can resolve these issues, and propose a dynamic context-aware access control model (DCAAC) which extends RBAC with context constraints.
本文提出了一个上下文感知的访问控制模型(DCAAC)，D CAAC扩展了RBAC模型，增加了上下文约束。
The role could span all web systems in portal. It was a token-based and dynamic-activated access control model, which could dynamically adjust the access rights according to user access requirement.
该模型是一个动态激活的模型，根据用户实际的访问需求动态激活相应角色，为用户管理和访问控制管理提供了一个新的解决方案。
The role could span all web systems in portal. It was a token-based and dynamic-activated access control model, which could dynamically adjust the access rights according to user access requirement.
该模型是一个动态激活的模型，根据用户实际的访问需求动态激活相应角色，为用户管理和访问控制管理提供了一个新的解决方案。
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