Siemens vdo products for automobile chassis and bodies , such as airbags , antilock brake systems and access control systems also help improve safety and security 西门子威迪欧汽车电子集团为汽车底盘和车身设计的产品(如安全汽囊、防抱死系统和进入控制系统)还提高了汽车的安全性能。
Finally , based on the rcbac model , the paper presents the framework and design for the unified resource access control system and has proved rcbac ’ s advantages by experimentation 最后以rcbac模型为基础,给出了统一资源访问控制系统的框架和设计,并通过试验验证了rcbac模型的优点。
As a centralized access control system , operating system is a good example , it based on gfac ( general framework of access control ) . we introduced a distributed access control system , but new questions should be concerned 它所实践的访问控制通用框架( gfac ) ,采用分层和隔离的方法,提供了一个高度抽象的访问控制复用框架。
Extending database technology , konstanz , germany , 2000 , lncs 1777 , pp . 121 - 135 . 3 damiani e , di vimercati s , paraboschi s et al . rm a fine - grained access control system for xml documents 那么,当用cduce写这个安全策略时,这个策略必须使用一个模式去区分这个叶结点元素和其它的非机密元素,然后再使用非机密元素去创建一个新的文档。
Access control can prevent data from being destroyed , altered , disclosed , or copied by unauthorized accesses . and every access control system needs to authenticate the identity of user 而安全的访问控制系统可以防止计算机系统中存储的信息受到非授权用户的破坏、篡改、泄漏和复制,任何访问控制系统都要对访问双方进行身份认证。