查询词典 performance

In order to explore the inherent laws of anti-rut performance of asphalt concrete reinforced with different position grid, the 10 cm depth test mould is utilized to test anti-rut performance of asphalt concrete with different position grid, then creep parameters are obtained by actual experiment, and viscoelasticity finite element model is established to commutate the biggest shearing stress of different depth wheel tracking model.

为探索格栅层位对加筋沥青混凝土抗车辙性能影响的内在规律，采用10 cm深车辙试模对不同格栅层位的沥青混凝土进行车辙试验，实测蠕变参数，建立粘弹性有限元模型，对不同深度的车辙模型进行最大剪应力计算，最后将二者对比分析。

With the results which include performance point , shear force-displacement , distribution of the plastic hinges and so on, and has carried on the comparison with the elastic response spectrum method and the time-history method . An appraisal has been made after considering the structure earthquake resistance performance.

分析结果包括结构在小震和强震下的性能点和顶点位移，底部剪力-顶部位移，结构破坏时塑性铰的分布等，并与弹性反应谱法和动力时程分析的结果进行了比较，利用分析结果对结构的抗震性能做出了评估。

The Company has already adopted an ERP information management system in its operations. All the raw materials have imported from Japan, Germany and Sweden to ensure performance stability and complete category. For the heat treatment, we have a specialized factory to provide a complete matching service. With the advanced production equipment and a lot of experienced technical experts, we make the product performance much better, and services much faster and more convenient.

公司现已采用ERP信息管理系统作业，产品所用原材料均采用日本、德国、及瑞典进口，性能稳定、种类齐全，热处理则有专业厂家配套服务，并配以先进的生产设备及一批经验丰富的专业技术人才，使得产品的性能更优异、服务更便捷。

In order to eliminate the influence caused by the nonminimum phase characteristic of a common Boost DC／DC converter, Viswanathan K has proposed a novel tristate Boost DC／DC converter. For enhancing performance, the statespace averaging model of this converter was first presented in this paper. Due to the nonlinear nature in this model, an inputoutput feedback linearization technique was adopted, and a complete controllable linear system was obtained. Then a statefeedback control strategy was designed based on this linear system. Simulation results show that the proposed control strategy can assure constant output voltage in a wide range, so as to realize the stability of the system during large fluctuation of power supply and load disturbance. Good dynamic performance can also be achieved.

针对 Viswanathan K为消除普通BOOST DC／DC变换器的非最小相位特性而提出的三态Boost DC／DC变换器，为进一步提高这种电路拓扑的性能，在建立了变换器状态空间平均模型的基础上，针对其多变量、非线性特点，采用输入输出线性化将其转化为一个完全可控的线性系统，在此基础上应用现有成熟的线性控制策略进行了控制系统的设计，并且采用MATLAB进行仿真验证，结果表明：这种非线性控制策略可以确保输出电压在大范围内恒定可调，且即使存在大范围扰动(输入电压和负载变化均较大)的情况下，系统也可以确保稳定性和良好的动态性能。

It has been observed that the presence of weldlines significantly reduces the mechanical property of injection molded parts . Therefore, in recent years, the analysis on injection molded parts with weldline obtains global concerns, this is. on the one hand , due to large-scale complex parts gradually manifold , on the other hand, the people desires on the appearance and internal performance of parts are increasing high , how to enhance the performance on the weldlind area becomes investigative emphasis .

因为熔接线的存在显著地减少注射制件的力学性能，因此，近些年来，对注塑制品熔接线的分析得到了普遍的关注，这一方面是由于大型复杂制件的逐渐增多，另一方面是人们对制品的外观和内在性能要求越来越高，如何提高制品熔接线区域的性能成为研究的重点。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

At last through at traditional Marshall design method and Superpave pitch that method compound mix material carry on way compares with and analyses with performance, The result shows , adopt and mix thick, detailed piling up and inlay lock cooperate withpitch who proportion compound mix material have high temperature stability and impervious swimming skill can a good one relatively by ore material that characteristic choose according to one, its surface is coarse, and it is better to resist slippery performance.

通过与传统马歇尔方法和Superpave方法设计的矿料级配在其最佳油石比时的物理力学性能对比分析，发现采用本文提出的设计理论和方法所配制的沥青混合料具有良好的抗高温车辙性能、抗渗水性能以及抗滑性能，而且该方法具有工作量小，在实际工程中易于操作等优点，可以广泛应用于我国高等级公路工程建设。

Compared with existing methods, the resulting methods can obtain good performance at low computing cost. For each machine, we make a clear theoretical analysis and carry out a series of experiments to evaluate its performance.

本篇博士学位论文在统计学习理论的框架下，应用核方法，提出几种新的学习思路，建立起一套简洁、高效的回归学习机，并成功地用于预测实践。

Due to its smaller computus, faster convergence rate and smaller misadjustment, and its performance is not influenced by existing uncorrelated noise, the proposed algorithm can be applied perfectly in the adaptive noise cancellation system and achieves favorable performance in lower SNR situation.

该算法计算量小、易于控制，具有快速的收敛速度和较小的失调，不受已存在的非相关噪声的影响，可很好地应用于自适应对消系统中，且在低信噪比环境中仍能保持良好的性能。

The SAN makes it true that storage resources can be devided from servers, and can provide high performance data pipe with 100 MB/s and shared storage devices managed concentrically. This makes data access, backup and restore will not reduce performance of network largely. This removes people抯 misgiving for bandwidth of network.

SAN使存储资源与服务器分离，可以提供100兆字节／秒的高性能数据管道和共享的集中管理的存储设备，使得数据的访问、备份和恢复不会大幅度降低网络性能，消除人们对网络带宽的顾虑。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。