文章通过对控制系统中强实时任务进行分析，指出系统存在的各类强实时任务。
Hard real-time tasks of control systems are analyzed, and all kinds of hard real-time tasks that include in control system are pointed out.
文章通过对计算机网络入侵方法与手段的分析，提出一些防范措施和侦查取证方法。
Through the analysis of network intrusion methods, this article advances some prevention measures, investigation methods and methods of obtaining evidences.
文章通过对软件可靠性因素的定义和分析，提出了软件可靠性的综合评估指标体系。
The comprehensive evaluation index system of software reliability is proposed with the definition and analysis of software reliability factors.
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