ID 原文 译文
24295 对目前的微带预失真电路工作在 K 波段以下，绝对或相对带宽一般不超过1.8 GHz 和 4%，需在输入及输出端加隔离器等不足，基于 ADS(Advanced Design System)软件设计并加工了一种用于中心频率 30 GHz，绝对和相对带宽为 2 GHz 和 6.67% 的毫米波行波管的微带预失真电路。 The conventional micro-strip predistortion circuits, whose absolute or relative bandwidth are less than 1.8 GHz and 4%, work at below K band, and need isolators to match the input and output ports. Based on the Advanced Design System (ADS) software, it is designed that a micro-strip predistortion circuit for millimeter wave band TWT at center frequency 30 GHz, absolute bandwidth 2 GHz, and relative bandwidth 6.67%.
24296 分别测试行波管和级联线性化器后的行波管，29 GHz, 30 GHz 和 31 GHz 的增益和相位压缩量分别可以从 7.5 dB 和40°, 7.3 dB和50°, 7.1 dB 和59°改善到 3.8 dB 和10°, 3.7 dB 和12°, 2.4 dB 和15°以内。 The results of experiments show that the compressions variations of gain and phase are from 7.5 dB and 40°, 7.3 dB and 50°, 7.1 dB and 59°to less than 3.8 dB and 10°, 3.7 dB and 12°, 2.4 dB and 15°for the TWT without and with the linearizer at 29 GHz, 30 GHz and 31 GHz respectively.
24297 双音测试结果表明，为了达到通信中载波与三阶交叉调制分量抑制比(C/IM3)25 dBc 的要求，单独行波管在 29 GHz, 30 GHz 和 31 GHz 时需分别回退 17 dB, 18 dB 和 18 dB，而加入线性化器后的行波管，只需分别回退 12 dB, 9 dB 和 8 dB，也即加线性化器可改善 5 dB, 9 dB 和 10 dB，极大地提升了行波管的线性度，具有重要工程应用价值。 The two tones test results show that the Input Power Back Off (IPBO) are 17 dB, 18 dB and 18 dB for the TWT, but 12 dB, 9 dB, and 8 dB for the Linearized TWT (LTWT), namely 5 dB, 9 dB, and 10 dB improvements with the linearizer at 29 GHz, 30 GHz, and 31 GHz respectively for the demand of 25 dBc Carrier to third InterModulation (C/IM3) ratioin in communication system. The linearity of TWT is clearly improved with the linearizer, which serves as a great value for engineering application.
24298 词语相似度的计算在机器翻译、信息检索等多个领域有重要作用。 Word similarity measurement plays an important role in machine learning, information retrieval and many other fields.
24299 该文以概念层次网络理论的概念基元符号系统为语义资源，在共性与差异性对比思想下，提出一个涵盖层次性、网络性、对比对偶特性、挂靠特性及五元组信息的多维度词语相似度计算方法； Regarding the concept primitive symbol system of Hierarchical network of concepts theory as semantic resource and comparing commonness with difference, a multi-dimensional computational method for similarity is proposed which considers the hierarchy, netted nature, comparability and duality, attached feature and quintuple information of the system.
24300 在节点深度和节点距离度量上，引入权重以增加不同层次间的区分程度。 Weight strategy is introduced for node depth and distance measurement to increase the discrimination of node level.
24301 在人工打分的测试集上进行实验，结果表明该方法计算的相似度与人工判断的符合程度较好，兼容度、相关系数和序对符合度分别达到 0.812, 0.786 和 0.775； Experiment on manual scoring test set shows that the computed similarities are consistent with human judgments. The proposed method achieves 0.812, 0.786, and 0.775 in compatibility degree, correlation coefficient, and ordinal pair conformity respectively.
24302 同时，相关性检验的结果也显示该方法的计算值与人工打分显著相关。 Meanwhile, the result of correlation test further proofs that the computed similarities and human's scores are significantly correlated.
24303 使用智能手机中集成的加速度传感器识别用户日常动作在惯性定位、个性化推荐、运动量评估等领域有重要的应用。 Human activity recognition based on accelerometer embedded in smartphones is wildly applied to inertial positioning, personalized recommendation, daily exercise estimating and other fields.
24304 手机位置不固定导致的动作识别率低下是该领域面临的主要问题。 The low recognition rate which caused by varying phone displacement is a crucial problem which needs to solve.