ID	原文	译文
5184	仿真结果表明，系统极化码比非系统极化码具有更好的误码率性能；相比非系统极化码，系统极化码在串行抵消译码下对差错传播具有较强的抵抗性。	Simulation results demonstrate that syste-matic polar code has advantage over non-systematic polar code in bit error rate performance, and the former are morerobust against error propagation than the latter under successive cancellation decoding.
5185	上述结果对极化码性能的优化以及 5G 通信有重要的理论价值。	The above results are considerableimportance from the theoretical values in 5G communication and performance optimization of polar code.
5186	针对云环境 SDN 网络中存在的对低速率 DDoS 攻击检测精度较低，缺乏统一框架对数据平面、控制平面低速率 DDoS 攻击进行检测及防御等问题，提出了一种针对低速率 DDoS 的统一检测框架。	Aiming at the problems of low-rate DDoS attack detection accuracy in cloud SDN network and the lack ofunified framework for data plane and control plane low-rate DDoS attack detection and defense, a unified framework forlow-rate DDoS attack detection was proposed.
5187	首先，分析验证了数据平面低速率 DDoS 攻击的有效性，在此基础上结合低速率 DDoS 攻击在通信、频率等方面的特性，提取了均值、最大值、偏差度、平均离差、存活时间这 5 个方面的十维特征，实现了基于贝叶斯网络的低速率 DDoS 攻击检测。然后，通过控制器下发相关策略来阻断攻击流。	First of all, the validity of the data plane DDoS attacks in low rate wasanalyzed, on the basis of combining with low-rate of DDoS attacks in the aspect of communications, frequency characte-ristics, extract the mean value, maximum value, deviation degree and average deviation, survival time of ten dimensions characteristics of five aspects, to achieve the low-rate of DDoS attack detection based on bayesian networks, issued by the controller after the relevant strategies to block the attack flow.
5188	实验表明在 OpenStack 云环境下对低速率 DDoS 攻击检测率达到 99.3%，CPU 占用率为 9.04%，证明了所提方案能够有效地完成低速率 DDoS 攻击的检测及防御。	Finally, in OpenStack cloud environment, the detectionrate of low-rate DDoS attack reaches 99.3% and the CPU occupation rate is 9.04%. It can effectively detect and defendlow-rate DDoS attacks.
5189	域间协议是快速实现天地一体化信息网络中各类卫星系统及天地异构网络间互联的关键。	The inter-domain routing protocol is a key factor in the rapid integration of various satellite systems and hete-rogeneous networks in integrated space-terrestrial network (ISTN).
5190	然而，天地一体化信息网络的天、地网络拓扑的极大差异性使直接部署现有域间协议可能面临性能问题。	However, the wide difference between network to-pologies of space and terrestrial networks may present significant challenges to the deployment of existing inter-domainprotocols.
5191	为验证域间协议的工作性能，设计了一种天地一体化信息网络协议验证平台，采用虚拟网络技术高效模拟大规模、高动态的空间网络以及现有地面网络。	To test the performance of these protocols, an emulation platform for ISTN was designed to efficiently emulatethe dynamic and large-scale space network and the existing terrestrial networks using virtual network technology.
5192	实验结果显示，随着空间网络的拓扑规模和地面网络的路由表规模增加，天、地网络间的互联效率变得非常低。	Exten-sive experiments demonstrate that, with the expansion of the scale of space network and the scale of terrestrial Internet'srouting table, the integration efficiency between space and terrestrial networks becomes very low.
5193	针对 APP 中第三方服务提供商非法采集用户隐私信息的问题，提出了一种 APP 隐私信息泄露风险评估方案 PRAS。	The APP in smartphone contain various third-party services. However, the service providers illegally read theuser's private information. To address this problem, a privacy risk assessing scheme called PRAS was proposed.