数学基础

There are profound study on the internal heat and mass transfer of cooling tower in unwindy weather at present.

在目前冷却塔数值研究的基础上，本文以逆流湿式自然通风冷却塔为研究对象，建立冷却塔内外空气流动和传热传质的数学和物理模型，并运用数值计算方法对冷却塔进风口附近的流场进行了数值模拟。

The mechanism of migration and transformation for inorganic and organic pollutants in vadose zone and its research present situation at home and abroad are discussed;the mathematic model of simulated pollutants migrating and transforming rule in vadose zone and its applied qualification are explained,thus a foundation is laid for controlling the pollutants of vadose zone and underground water.

评述了包气带中无机污染物和有机污染物迁移的机理及国内外研究现状，说明了模拟污染物在包气带中迁移转化规律的数学模型及其应用条件，从而为控制包气带及地下水的污染奠定了基础。

Based on visual perception and image statistic characteristics, propose new techniques for content-aware key feature measurement, extraction and encryption of vidual media, consolidate foundations of mathematic theories of information hiding and embedding, propose robust capacity models and estimation methods for visual media information hiding and embedding; solve the key problems inherent in digital content certification of visual media, systematically establish controllable content-aware security mechanism of visual media

基于视觉感知和图像统计特性，提出可视媒体基于内容的关键特征度量、提取和加密的新方法；完善信息嵌入与隐藏的数学理论基础，提出高鲁棒性的可视媒体信息嵌入与隐藏的容量模型和方法，解决可视媒体的内容认证问题，系统地建立可控的可视媒体内容安全新机制。

Workflow modeling based on the activity network is straight and wieldy. Petri network modeling has rigorous mathematics logic, firstly, this paper compares the two modeling method, secondly, this paper completes a modeling implement.

基于活动网络的工作流建模直观、易使用，Petri网的建模有严密的数学逻辑，在比较了二者的优缺的基础上，本文的工作流建模工具在表示方式上采用了活动网络的建模方式，在计算方法上采用了Petri网的建模方法。

Based on the research of work characteristics of engineering machine main clutch, this paper analyses the heat transmitting process, presents its mathematical model, and its exotherm expression, and obtains its results and temperature varing laws throught numerical solution.

在研究工程机械主离合器工作特点的基础上，分析了主离合器工作时的热传导过程，给出了热传导数学模型和温升表达式，并用数值解法求解，得出摩擦片的温度变化规律。

Based on the system study of CATV integrated service headend system, design and realize the first CATV Integrated Service Information Net of China. The main content of this article include: The second chapter is Combined to the demand of the system and analyzed some schedule model, a real-time schedule arithmetic base on memory is proposed.

本文主要内容包括：第二章深入研究了综合业务信息网用户请求的分布规律，建立了用户请求的数学模型，推导了用户请求分布的一般表达式，在此基础上，提出了基于动态优先级调整的资源均衡调度算法，有效地实现了大用户量的并发用户请求处理以及中心系统资源的实时优化调度策略。

By introducing a mathematical theoretical tool - Rough Set, this paper presents a brand-new classification system.

本论文引入了Rough集这一新数学理论工具，并在此基础上实现了新的分类模型。

The results abstained in this dissertation make an improvement of the theory of mathematical programming, and offer some basis for the study of algorithms and some potential applications of this kind problem in the future.

本文的结果对均衡约束数学规划的理论作了一定的完善，同时也对该类问题求解算法研究和一些潜在的应用研究提供了一定的理论基础。

Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so the observer is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system.

本文正是为解决此类非线性限制问题而进行了深入的理论研究，在综合分析三相交流直线永磁同步伺服电动机非线性动态数学模型的基础上，采用反馈线性化控制理论，建立了三相交流直线永磁同步电动机速度跟踪闭环系统动态的输入—输出模型，进而通过该线性化模型设计反馈控制律、速度跟踪控制律和负载阻力扰动观测器，在保证整个闭环系统稳定的前提下，提高伺服跟踪的快速性和精确性。

Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so theobserver is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system.

本文正是为解决此类非线性限制问题而进行了深入的理论研究，在综合分析三相交流直线永磁同步伺服电动机非线性动态数学模型的基础上，采用反馈线性化控制理论，建立了三相交流直线永磁同步电动机速度跟踪闭环系统动态的输入—输出模型，进而通过该线性化模型设计反馈控制律、速度跟踪控制律和负载阻力扰动观测器，在保证整个闭环系统稳定的前提下，提高伺服跟踪的快速性和精确性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。