查询词典 performance evaluation

Single loop instantaneous voltage feedback control and multiple loop feedback control, which can be realized by digital method or analogue method, are normal control strategies of inverter. The controller's performance of a same control strategy designed by different designers is different This paper makes out uniform analysis and design theory of inverter control strategies with pole-assignment technique of state-space theory for the first time. It is firstly proposed that controller parameters being equal to control system orders is the base of realizing high performance inverter. Design and performance comparability of various controllers is presented with uniform pole-assignment method.

本文首次采用状态空间理论的极点配置技术，对逆变电源的几种控制策略进行了统一的分析和设计，首次提出控制器控制参数与控制系统阶数相等是高性能逆变器控制实现的基础，并通过极点配置这种统一的设计方法对各种控制器进行了设计和性能比较，分析了要考虑的一些非理想因素的影响。

Three main environmental factors——traffic,rainfall,temperature,which can lead to the direct change of pavement performance are used as the input layer of neural network.The performance indexes of asphaltum concrete pavement,i.e.dilapidation rate,smoothness,deflection,friction coefficient are used as output layer.The relation between environment factor and pavement performance is acquired by introducing the module of BP Neural Network in MATLAB.

阐述了应用BP神经网络进行沥青混凝土路面使用性能预测的可行性，以环境因素，即交通量、降雨量、温度等3个直接使路面性能发生变化的主要因素作为BP神经网络的输入层，以沥青混凝土路面的破损率、平整度、弯沉值、摩擦系数等4项性能指标作为输出层，采用MATLAB语言中的BP神经网络模块进行自学习，得出环境因素与路面使用性能之间的关系。

The same period of a few of the new fund has its own unique features, the only fund manager's point of view, Hua-core optimization of aspiring fund managers Chen Yu Qiao is relatively good, Qiao Chen Yu was in charge of the Hua is Manulife in 2007,"Taurus Award" winners, leaving early in 2008, she became Manulife closed-end fund's manager, EMC, EMC this year's performance in closed-end funds are also among the best in both open-end funds in the bull market's performance in the lead, There are also closed-end funds in the bear market leader in the industry's resilience in the performance of the fund's manager of new products cause for concern.

了一个新的基金数同期都有自己独特的功能，唯一的基金经理的角度来看，华有抱负的基金经理的核心优化陈于乔石委员长是比较好的，乔石在谌渝负责的华于2007年宏利，"金牛奖"得主，在2008年初离开，她成为宏利封闭式基金的经理，EMC公司，EMC公司今年的业绩在封闭式基金也几乎是在开放式最佳结束基金在牛市的中，也有封闭的，在行业中的基金经理的新产品性能弹性熊市资金方面领导带头的表现令人担忧。

In the end, we can see the performance of MMSE estimator is the best, and the performance of LS estimator is the worst, while for the complexity of the three channel estimator methods, the condition is reverse comparing with the condition of the performance.

最后我们可以看出MMSE估计的性能要远好于LS估计，但其复杂度较高，SVD估计的性能及运算复杂度皆介于前两者之间。

Taking the fiber coupler as represent, aiming at the performanceproblem of the fiber coupler which is used in the market, such as theoptical performance differences of accepted products, technologicaloptimization and stability reflected by the low rate of finished products,how to reduce excess loss, and so on. From the view of manufacture of rheological formation, the research of experiment and theory has beendeveloped. The effects of rheological technological parameters such asdrawing speed and fused temperature on the optical performance,microstructure and the process of rheological formation have beeninvestigated. It is discovered that the present heating mode of combustinggas can\'t satisfy with the rheological manufacturing technological needof high performance fiber devices. A new resistance heating system is putforward, designed and manufactured, and a new fused biconical tapermachine is developed.

论文以光纤耦合器为代表，针对目前市场上广为应用的光纤器件存在的性能问题，如合格产品的光学性能差异，成品率不高所反映的制备工艺优化与稳定问题，如何进一步降低附加损耗等，从光纤耦合器流变成形制造的角度，分析了流变制造工艺参数如拉锥速度与熔融温度及其扰动对流变制造成形过程、微观结构与器件光学性能的影响，发现现有燃烧气体火焰的加热方式不能满足高性能光纤器件的流变制造技术要求，提出、设计并制造了一种新型的电阻加热系统和熔融拉锥机。

The method of thermal economic analysis based on the matrix model is applied to analyze the performance of Mengda power plant No.2 unit. The calculating method of performance indexes is introduced . The software is built by using C+-+ Builder. At the end, real-time analysis system of the unit performance indexes is completed.

本文以蒙达发电厂二号机组为例，应用基于矩阵模式的热力系统分析方法对其进行了详细的性能分析，介绍了机组各项性能指标的计算方法，并采用C++Builder编制了相应计算机软件，最终实现了机组性能指标实时分析。

Call mode, input, output and parameters of several MPI collective communication operations in CAMPI are discussed. We have implemented barrier, broadcast and reduction operations in CAMPI and have analyzed application performance. In performance contrast, CAMPI can archive better performance improvement relative to MPICH.

通过讨论多种MPI的集合操作，给出它们在CAMPI中的函数调用方式、输入参数描述、输出参数描述、参数说明和函数说明，重点针对同步、广播和归约操作，实现了CAMPI集合通信操作库的子集，并且给出应用性能分析，在性能比较中，相对MPICH可以获得较高的性能改善。

With the analysis and research of the supply chain performance measurement index system of domestic and international at present, this paper constructs the whole supply chain performance measurement index system, from internal of node, between the nodes and the whole supply chain performance measurement three aspects.And then, gives quantitative formulas of quantitative and qualitative.

本文在总结国内外相关研究成果的基础上，首先从供应链节点企业内部的绩效评价、节点之间的绩效评价和供应链整体绩效评价三个方面，构建供应链总体的绩效评价指标体系，并给出相关定量指标和定性指标的量化公式。

A high performance digital IF radar receiver which uses IF echo and COHO joint process algorithm, field sampling, field processing and remote transmission is introduced. Its performance can meet the requirements of modern high performance radar system.

采用中频回波和中频相参信号联合相干处理，现场采样，现场处理，远程传输的体系结构实现了高性能数字中频雷达接收机，其性能可以满足现代高性能雷达系统的需要。

As the impregnant, the insulating oil is provided with the following features, such as excellent dielectric performance, stable chemical performance, non-chlorine or chlorinated biphenyl, complete biodegradation, non-pollution, low condensation point, low viscosity, excellent performance under low temperature and absorption capacity for the gas which is produced by partial discharge, high fire point, excellent capability of over-voltage withstanding.

作为浸渍剂的绝缘油具有优良的介电性能，化学性能稳定，不含氯或氯化联苯，能完全生物降解，对环境无污染，凝点低，黏度小，低温性能好，对局部放电产生的气体有很好的吸收能力，燃点高，具有出色的耐受过电压能力。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。