模型理论

Both analytical and subcircuit models include a detailed ambipolar transport analysis of bipolar transistor portion instead of conventional unipolar transport theory and does not assume the quasi_static conditions.

基于半导体器件物理方程，建立了IGBT模型参数非破坏提取的系统理论，并对模型参数的理论计算进行了全面的优化，模型参数提取简单、准确。

In this paper, we contribute an evolutionary heterogeneous beliefs model byusing t distribution to replace traditional standard normal to describe fundamen-tal price process and adding risk-adjusted market fraction function in classicaltwo types traders scheme. And then we utilizedifference equation stability and bifurcation theory and numerical simulation tostudy the system. It is found that the system has some styled facts (high kurto-sis、fat tali and long memory) of the actual financial market, and this indicatesthat the simulation model can reflect well the true financial market.

本文通过引入t分布代替原有的正态分布描述基础价格过程，引入经风险调整的投资者市场分数维函数取代原有的无风险调整的市场分数维函数，在经典的两类投资者(自主投资者和图表分析者)模拟模型框架下，建立了新的异质预期资产定价模型，利用差分方程稳定性和分支理论及数值模拟的方法对该系统进行理论分析和实证研究，发现模型具有真实金融市场的程式化事实(尖峰厚尾性，长记忆性等)，模拟效果较好。

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。

These productions boosted the development of plastic theory in engineering and settled a platform of applying plastic theories in engineering. And especially the intergraded mechanical models of metal bulk forming process provided a new approach of describing the metal bulk forming process in quantitative and parameter methods and make possible the realization of intelligent function of the computer simulation of metal plastic forming process.

所取得的主要研究成果是对工程塑性理论的深化及其在应用方向上的提升，构成了推广应用工程塑性理论的简易平台，特别是基于模型单元的力学模型而建立的金属体积成形过程的整体力学模型，是定量参数化描述体积成形过程的新的有力工具与方法，是赋予金属塑性成形过程模拟以智能化功能的关键。

In addition, the paper give a minuted escription about the two main element--cash flow and the discount ratio of the model .so can know how to apply the model further in enterprise evaluation, of course,any theory including cash flow model is comparative when looked as perfect and the best theory, This approach has many dificult point also when use the model appraise the value of enterprise.

并对这个模型的两大基本要素现金流量和折现率进行了详尽的分析，以便更明确如何运用此模型。当然，任何理论说其比较完整、具有理论意义都是相对而言的，折现现金流量模型也不例外，采用折现现金流量法评估企业价值也存在着难点，此论文对其进行了探讨，使企业价值能更好的得到体现。

This paper includes three parts. In the first one, a theoretical passivating model has been developed for fabricating silicon solar cells.

本论文包含三个部分，第一部分首先分析了太阳电池表面钝化的理论模型，结合这些理论模型作了一些理论计算。

The theory model of information equipments allocation that takes demands as direction is set up based on summarized different characteristics of these two kinds of information resources. The relevant contents about how to select the type of information equipments are explained. The quality model of the enterprise's information personnel is established based on redistricted the duties of enterprise's positions. On this basis, this dissertation proposed some suggestions on information equipments and information personnel's management.

本文将企业支持性信息资源划分为信息设备和信息人员两大类，根据这两类信息资源的不同特点分别对其相关理论进行了总结凝练，建立了以需求为导向的信息设备配置理论模型，阐述了关于信息设备选型的相关内容，重新划分企业的职类职位、构建出企业信息人员的素质模型，为合理配置信息设备和信息人员提供了理论依据和实现方法。

Subsequently, the contrary-based concept design model integrating with Triz theory is presented, which generates new concepts by reformulating the representation of the existing product concepts through parametric variations, substitutions and other formal operations.

然后根据旋转动力学理论提出了尺度弯曲的产品模型和该模型的启发式建模方法，提出了与Triz理论结合的对立创新模型，其以对立矛盾为出发点，寻找对立转换条件来消除矛盾，进而实现创新。

In this part, the thesis change the study point from theory to actuality .

在这部分中，论文将研究重点由理论转向实务，以实证分析方法考察了我国证券市场股票和国债两种资产组合中马克维兹模型、哈洛模型和VaR模型的应用效率比较，从而验证理论分析的有关结论。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失