ID 原文 译文
47006 低速率拒绝服务（LDoS, low-rate denial of service）攻击是一种降质服务（RoQ, reduction of quality）攻击，具有平均速率低和隐蔽性强的特点， LDoS (low-rate denial of service) attack is a kind of RoQ (reduction of quality) attack which has the characte-ristics of low average rate and strong concealment.
47007 它是云计算平台和大数据中心面临的最大安全威胁之一。 These characteristics pose great threats to the security of cloud com-puting platform and big data center.
47008 提取了 LDoS 攻击流量的 3 个内在特征，建立基于 BP 神经网络的 LDoS 攻击分类器， Based on network traffic analysis, three intrinsic characteristics of LDoS attack flowwere extracted to be a set of input to BP neural network, which is a classifier for LDoS attack detection.
47009 提出了基于联合特征的 LDoS 攻击检测方法。 Hence, an ap-proach of detecting LDoS attacks was proposed based on novel combined feature value.
47010 该方法将 LDoS 攻击的 3 个内在特征组成联合特征作为 BP 神经网络的输入，通过预先设定的决策指标，达到检测 LDoS 攻击的目的。 The proposed approach canspeedily and accurately model the LDoS attack flows by the efficient self-organizing learning process of BP neural net-work, in which a proper decision-making indicator is set to detect LDoS attack in accuracy at the end of output.
47011 采用 LDoS 攻击流量专用产生工具，在 NS2 仿真平台和 test-bed 网络环境中对检测算法进行了测试与验证， The pro-posed detection approach was tested in NS2 platform and verified in test-bed network environment by using the LinuxTCP-kernel source code, which is a widely accepted LDoS attack generation tool.
47012 实验结果表明通过假设检验得出检测率为 96.68%。 The detection probability derived fromhypothesis testing is 96.68.
47013 与现有研究成果比较说明基于联合特征的LDoS 攻击检测性优于单个特征，并具有较高的计算效率。 Compared with available researches, analysis results show that the performance of com-bined features detection is better than that of single feature, and has high computational efficiency.
47014 针对存在残留自干扰（RSI）的 3 节点全双工协作通信系统，研究分布式 Alamouti 空时码（DASTC）的差错性能。 The error performance of distributed Alamouti space-time code (DASTC) was investigated in a 3-nodefull-duplex (FD) cooperative communication system with the presence of residual self-interference (RSI).
47015 通过分析成对差错概率及其在高发射功率下的渐进表达式，导出了系统的分集增益和编码增益； Based on theasymptotic expression of the pairwise error probability in the high transmit power region, the diversity and coding gainwere derived.