模型理论

Based on percolation theory , truncated Weibull distribution is used as the pore throat distribution function, a two phase and 3 dimensional quasi-static network model is established to simulate the primary oil displacement and secondary water flooding of reservoir cores.

结合逾渗理论，采用截断威布尔分布作为孔喉特征分布函数，模拟储层岩心的初次油驱过程和二次水驱过程，建立了油水两相三维准静态孔隙网络模型；通过模型计算与试验结果的对比，验证了孔隙网络模型的有效性。

On the foundation of further analyzing present situation of our electric transmission price regulation, unifying concrete characteristic of electric transmission enterprises and rod competition theory and achievement rod method,proposed a comprehensive electric transmission price control model which combines price upper limit control and rod competition control,especially a measure model of production efficiency of electric transmission enterprise based on Malmquist index.

3对电力传输企业标竿激励涉及的绩效评价的技术方法、以及标竿激励规制方法和过程进行考察的基础上，进一步分析我国电力传输价格规制现状，结合我国电力传输企业的具体特征以及标尺竞争理论和绩效标竿方法，提出了价格上限规制和标尺竞争规制相结合的综合输电价格规制模型，特别是提出了基于Mulmquist指数的电力传输企业的生产效率的测度模型，并综合输电价格规制模型规制目标、结构设计、输入因素以及+/-Z的X因子以及Z因子的设定进行了深入的研究。

Using the theory of Expected Utility to evaluate the risk of project by the probability distribution of projects NPV.

通过分析影响项目经济效益指标的不确定性因素，确定了模型的随机变量；根据基本净现值模型提出了随机净现值模型；通过项目净现值的概率分布运用期望效用理论对项目的风险进行评价。

In the second chapter, we introduce utility theory, mean-variance model, VAR method, rate of return.

第二章首先介绍了效用理论、由Markowitz提出的均值—方差模型、VAR风险管理方法、收益率分布问题，在Markowitz的均值—方差模型的基础上，重新定义了证券收益的风险，提出了一个新的用于资产配置的模型，这主要是为了实现规避风险进行分散化投资。

Due to the variousness and the complexity of the geological conditions and the observation environments of a pit it is unavoidable for model errors to exist in the data processing model of pit displacement monitoring .

由于基坑地质及观测环境的多样性和复杂性，基坑位移监测数据处理的理论模型与实际模型之间存在着模型误差。

This article analyses the Vector Space Model based on Algebra, and expands the model: expresses the index terms with minterm in order to reflect the relationship between terms, uses singular value decomposition to present the semantic structure of documents.

本文分析了代数理论的向量空间模型，并对该模型进行了扩展：用最小项标引词以反映词与词之间的关系，用奇异值分解来捕捉文献的语义结构；最后对这三种模型进行了比较。

Based on the previous study, a least-squares approach has been proposed for the optimal model-image fitting. The principle of this method is to minimize the distance between image edge pixels and the projected wire frame by adjusting the model parameters. This method is feasible in most cases.

周宏达[2001]利用影像萃取点至模型投影边线的距离为观测函式，提出一套最小二乘法进行模型与影像套合的理论，提供一个模型与影像套合最佳化的方法。

In financial mathematics, a series of stock prices is regarded as a sample path of stochastic process. Thus the realization of these stock prices is only an event with zero probability.

本文证明了股票市场中，技术分析指标可以从现有的股价模型(例如Black-Scholes模型、随机波动率模型)出发，用平稳过程的理论加以解释。

Hack's law, which can be derived from the second and third Horton's models, is same to allometric relationships between area and population of urban systems, the latter is connected with Beckmann's models and thereby with central place theory.

然后证明基于中心地理论的Beckmann城镇等级—规模模型与 Horton水系构成第一、第二定律数理同构，关于城市人口—城区面积的异速生长关系模型与关于主河道长度—流域面积的几何测度关系模型以及 Horton水系构成的第二、第三定律数理同构

We apply autocatalytic model to described the reaction of epoxy/amine systems. The parameters of the model can be obtained through DSC measurement and be used to adjust the curing time and temperature for the reaction. We have found the prediction of model is better fitting experimental results as the reaction temperature increases.

我们利用自催化模型来描述Epoxy/amine的反应过程，利用DSC得到此模型的四个反应参数，利用这些参数我们便可调控我们的交联温度与时间，在此研究中发现随著温度不断的提升，理论模型所预测的结果会与实验的结果越来越符合。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。