本文给出了服务计算的安全模型，分析了这种应用逻辑与安全策略分离的基于信任域的安全模型的主要思想和优点。
A security model of services computing is presented in this paper. Main idea and advantages of trust domain based security model are analyzed.
实例研究表明，该方法在并发软件设计阶段实现了横切关注点的分离策略，并使得系统模型具有松耦合、适应性和可跟踪性的优点。
The purview control of the log record and the management of the users are used as the example to study the crosscutting concerns, and the relevant solutions are proposed.
实例研究表明，该方法在并发软件设计阶段实现了横切关注点的分离策略，并使得系统模型具有松耦合、适应性和可跟踪性的优点。
The purview control of the log record and the management of the users are used as the example to study the crosscutting concerns, and the relevant solutions are proposed.
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