以...作基础

For the four laterals simply supported plate, the transverse deflection of plate is expanded over the modal shapes, the electroelastic model with self-sensing actuators plate is given, and the current is considered as output variable of measurement equation. Generalized modal coordinates being state variables, LQG and H∞control is proceeded using the state space equation.

将板的横向位移按模态展开，对配置压电自感作动器的薄板建立了模型，给出以广义模态坐标为状态变量的状态方程和以传感电流为输出的观测方程，在此基础上，对系统进行了LQG控制和H∞控制。

The main content of this thesis is as follows: 1The structures of EPS are analyzed. The main components of EPS are introduced in detail. Then the distributed torque in EPS is analyzed and the control system model is set up. 2Three control modes are discussed and the control strategy of EPS is studied in detail. Three principal modules in the control strategy are discussed—the predicted module which predicts motor rotational speed and steering rotational speed, the power-assistant module and the return control module. 3The assistant torque curves of the motor are designed by using the B-spline, so that any kind of custom-built assistant torque curves can be designed according to different kinds of automobiles. 4The hardware frame of EPS is studied. The developed controller based on 8-bit MCU MC68HC908MR8 is introduced and many related circuit units are designed, including the control circuit, the driver control circuit and so on. The software structure is discussed, then the steering control program flowchart is given.

本文的主要工作有： 1分析了EPS 的总体构成，对EPS 的各个部件作了详细的介绍，并在此基础上分析了EPS 的受力情况，建立了控制系统模型，并研究了EPS 的安全性能； 2讨论了EPS 的三种控制方式，提出了控制策略，并讨论了其中三个关键模块的作用：预估模块包括对电机转速和方向盘角速度的预估，助力控制模块以及回正模块； 3用B 样条插值方法进行EPS 助力曲线的设计，可按照用户的要求设计任意形状的助力曲线，以满足不同车型和不同用户的要求； 4研究了控制系统的硬件结构，以MC68HC908MR8 为核心设计了控制器，详细讨论了控制器的控制电路、驱动电路等；设计了控制系统的软件，给出了控制程序流程图，并对要点进行了详细的说明。

Yields from chiral bisoxazolines (5a) with diethyl oxalate using NaOCH〓 as base for the first time. The structures of chiral multioxazolines and their intermediates, multi (β-hydroxylamide) s, were characterized by 〓H NMR, IR, mass spectra and elemental analysis. The catalytic activities and enantioselectivities of chiral multi (β-hydroxylamide) s (4) and chiral multioxazolines (5～8) were investigated by using acetophenone and β-acetonaphthone as former chiral ketone, KBH〓 or NaBH〓 as reductive reagent in chapter three.

在此基础上，对合成方法作了创新，以羧酸或酯为原料，在无催化剂的条件下与手性α-氨基醇反应，通过回流分水或脱醇的方法，一步反应合成了手性多噁唑啉（5～8），产率为89.2%～98.4%；以手性双噁唑啉（5a）为原料，在NaOCH〓的作用下，与草酸二乙酯反应，首次合成了呋喃类双嗯唑啉（6a），产率为72.9%～75.6%。

This paper discusses the characteristics of the portal frame building constructer and studies optimization method to design them.The systematic analysis of the portal frames steel structural characteristics is done in section 2. And in section 3 and section 4, the structural optimization design is introduced based on the principles of finite element analysis and the technology of Object Oriented Programming in the software ANSYS.

本文系统地分析研究了门式刚架钢结构的特点，在此阶段，以有限元为基础，借助大型有限元ANSYS面向对象程序设计技术进行优化设计，研究基于功能强大的ANSYS作结构优化设计的问题：提出有效的设计变量、优化目标函数(以降低结构重量、充分发挥材料性能为目标)，编写APDL优化程序控制文件，在ANSYS程序上实现门式刚架结构优化设计。

The construction of recombinant UNPase provided a basis for the research on biocatalysed synthesis of adenosine. In comparison with uridine, inosine was the better donar of pentose-1-phosphorate. In the reaction mixture composed of 30 mmolL^(-1)inosine, 10 mmolL^(-1) adenine, and 30 mmolL^(-1) pH 7.5 phosphate buffer and 0.5% wet cells gave a high yield of 85.57% at 60℃ in 3h.

在此基础上研究了不同诱导条件对蛋白表达量的影响分别以肌苷和尿苷为核糖供体研究重组菌转化腺苷的条件，发现肌苷最适合作为核糖供体，在30mmolL^(-1)pH7.5的Na2HPO4-KH2PO4缓冲液中，以30mmolL肌苷和10mmolL^(-1)腺漂呤作底物，加入0.5%基因工程湿菌体60℃反应3h，腺苷的转化率为85.57%。

In the light of Kant\' s philosophy of reason and symbolism philosophy on culture of his successors-Cassirer and his student Langer, both of which were major representatives of new Kantism, and with an academic framework and logic axis of the interactive relationships between two major literary elements: the reason and the feeling, this paper systemically examines general styles and features of revolutionary war literature of the period 1950-1966so-called the 17-year period after foundation of PRO , its essential laws of the literary text production and commercial circulation as well as the possible controlling mechanism over the literature which may be dominated by the reason.

本文以康德理性哲学及其当代新康德主义的主要代表卡西尔和苏珊·朗格的文化符号哲学为主要理论依据，以理性与情感两大文学创作要素的辩证互作运动关系为学理框架和逻辑主轴，全面系统地考察了建国17年时期的革命战争文学的总体风貌和生产传播规律，在此基础上对制约文学创作的理性因素进行了深刻反思。

1Theoretically,based on Marxism and positive methodology and applying heavily theory andmethodologies from modern political science、sociology and Social psychology,it provides a more pro-found analysis on Sun's political thought;2as far as the narrative is concerned,the essay does not setany abstract goal to give a unpositive judgement on Sun's thought but sets the study in the social envi-ronment then and in an enviroment where international political thought kept changing;3the essayalso provides new ideas elsewhere as far as individual issues are concerned.

本文的独特之处在于：一、从理论而言，本文以马克思主义为基本指导，以实证史学为基础，大量运用了现代政治学、社会学、社会心理学等理论与方法，对孙中山的政治思想作了较为深入的分析。二、从论述角度而言，本文并未设定一抽象目标，对孙中山妄加评判，而是把孙中山放在中国当时的社会环境，国际政治思潮变化的环境中进行分析。三、从具体问题而言，本文也有若干新见。

This work designs a stream-based mail proxy which processes the mail segment by segment without the storage of the entire mail and interleaves the MIME parsing, decoding, decompression and virus scanning.

我们实作了一个以串流为基础的邮件代理伺服器，它以交错执行分析MIME、解码、解压缩、扫毒等步骤达到部分地处理邮件而不是先将整封存起来。

This article, from a view of anthropological aspect, compares the motive and cause of faith, mode of religious behaviour and cultural context of the two different groups and, upon the base of case investigation and interview during fieldworks, discusses those circumstances of "utilitarianism".

本文以文化人类学的视角，通过对城乡两地基督教徒群体的个案调查和访谈，从其入教动机和原因、体现信仰的行为方式以及其文化处境等几方面加以比较，在此基础上对该群体&功利性&的判断作了分析。

In this dissertation, based on glass microspheres and submicron silicon dioxide, the silver-coated core-shell shielding particles were prepared by liquid phase chemical deposition and layer by layer packing technology. The influences of the preparation conditions on the structure of the synthesized core-shell particles were also systemically studied. The conclusions are enumerated as follow:(1) Monodispersed submicron silicon dioxide spheres in the size range of 250～550 nm are synthesized by Sol-Gel method using ammonia as catalyst.

本文在前人研究的基础上设计出以微米级玻璃微珠为基核，采用液相化学沉积法和层层包裹法制备表面包银的核壳粒子电磁屏蔽剂，并对液相化学沉积法和层层包裹法的制备工艺进行了系统研究，取得了以下主要结论：(1)以氨水作催化剂，采用溶胶－凝胶法制备了粒径分布在250～550 nm之间的二氧化硅微球。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。