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中文摘要：
生存性分析是生存性增强的前提条件。针对当前生存性分析方法动态建模和复杂系统建模能力差的缺陷，提出了一种基于层次赋时CPN（HTCP-nets）的系统可生存性分析法，应用建模仿真工具CPN Tools对网络系统的生存环境和服务流程进行建模分析，求得了关键服务请求的平均响应时间、平均服务时间等表征系统生存能力的指标，最后根据分析结果给出了进行系统可生存增强的方法。
英文摘要：
Survivability analysis is the precondition of survivability enhancement. A system survivability analysis method based on Hierarchical TCPN was proposed. Compared with traditional survivability analysis methods, the method is more suitable for modeling dynamic behavior of complex system. CPN Tools, a Hierarchical timed Colored Petri net simulation tool was deployed for modeling the survivability environment and service workflow of network system. Based on the model established, two metrics, the average response delay and average service delay were extracted from the simulation results to evaluate system survivability. In the end, some measures for system survivability enhancements were proposed according to the result.
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