查询词典 model theory

Adopting similar principles of gas kinetic theory, scientists have set up the kinetic theory model of granular flows.

本文主要研究内容和成果如下： 1、利用颗粒流二维数值模拟程序对剪切盒实验进行了模拟。

This theory proved the limitedness of traditional theory .In recent decades , many venture invest firms organized resources from outside in a way of contract, and its organizational and investmental model offers sustainable dynamic for innovation .

近几十年来大量出现的风险投资企业以新的契约方式从外部组合资源，其组织和投资模式提供了技术创新的持续动力，一方面灵活了技术创新的动力机制；另一方面丰富了技术创新的资金来源。

Firstly, this paper introduce the present and prospective development, moreover compared advantage and short of different roll forming theory. Subsequently simplified process and analyzable model of channel section according to deforming elastic-plastic macro deforming finite element theory.

本文首先介绍了国内外关于辊式冷弯成型理论研究的现状与发展趋势，并比较了各成型理论的优缺点，随后在分析槽钢辊弯成型特点及其变形规律的基础上，以弹塑性大变形有限元理论为基础，对槽钢成型过程做出合理简化，建立分析模型，利用MARC软件对槽钢辊弯成型进行了三维有限元数值模拟分析。

In the research to demand of International reserves,first, according to the affective character of demand to transition of International reserves, choosing the decision theory of Markov and dynamic transition equation as basic model, the paper has set up two transition methods--- stationary matrix and dynamic matrix, the later matrix has improved the sensitive reaction to time and velocity. Second, combining with knowledge of linear algebra, the paper has analyzed and testified the positive associated relation between transition matrix elements on main diagonal and the convergent speed of system, and explained why international reserves transition embodies the character under new situation and why the transition process can be accelerated by the strike of international idle money. Third,on the quantitative calculating to elements of transition matrix,referring to multiplication theory and decomposing-composing method of system, the paper has transformed main three-factor deciding confidence of international monetary into detail modulus by comparing analysis measure,now the matrix has been decided.

在国际储备的需求分析研究中，本文首先选择马尔可夫转移方程作为基础模型，根据需求对外汇储备结构的影响特点，提出非定常转移矩阵变换方法，拓展了马尔可夫变换对时间和速度的敏感性；结合线性代数知识，分析证明了定常转移矩阵的主对角线元素值的大小与系统的收敛速度的正向关联关系，并利用结论解释了国际货币新动向下外汇储备转换表现出的趋势特点以及国际游资冲击对国际货币结构变化的加速影响；在转移矩阵元素的量化计算上，本文参考乘数理论和系统分解合成原理，采用对比分析方法把影响国际货币信心的三大要素综合量化为转移偏好系数，然后根据转移偏好系数确定转移矩阵的元素值，其中还分别具体给出了定常转移矩阵和非定常转移矩阵的计算方法及在变换中的使用方法，从而不仅在定量分析上应证了定性分析结论，而且反映了随时间变化的美圆、欧元、日圆的比例结构均衡过程。

Firstly,this paper analyses the operation in theory,it sets up the mathematical model of doubly fed induction generator two-phase rotating coordinate system according to the coordinate transformation theory.

本文以电压波动的工况为出发点，根据坐标变换理论建立了双馈异步发电机在两相旋转坐标系下的数学模型，同时考虑在电网电压不平衡扰动工况下，对此模型进行了进一步的修正。

The ratio of stock right calculated according to venture investment experiential principles is sound and easy to accept. It can give quantitative analysis support to the venture investment practice.(6)According to the theory of the real option, the author derived value formula of the real option fixed price and investment criterion. Based on above, the paper further research for optimal investment strategy of real option in monopolizing and competition under asymmetry information, and built the value model of real option for the investor and administrator by using the theory of the principle trust-agent Meanwhile, the solution of real option optimal investment and the shift value are derived applying the maximal principle .

针对高新技术企业发展的特点：研制周期长、投资费用高、每阶段风险水平特征差别大，运用实物期权理论与计算方法，通过研究建立嵌入期权现金流量图深入分析计算了企业发展中风险投资的最优策略、股权占有比例问题，对不确定性问题由于采用了有关实物期权计算公式，所以计算结果比基于传统的现金流量图的NPV方法更加客观、科学，同时按照风险投资经验法则计算出的股权占有比例合理易于接受，可为企业风险投资实践活动提供数量分析支持。

MethodsBased on the structure of gene frequency matrix, we combine the method of multidimensional scaling analysis with the minimal spanning tree of graph theory, to set up the model of graph theory multidimensional scaling analysis.

提出基因频率矩阵的图论多维尺度分析方法，探讨该法在人类群体遗传结构研究中的应用。

Methods Based on the structure of gene frequency matrix,we combine the method of principle components analysis with the minimal spanning tree of graph theory,to set up the model of graph theory principle components analysis.

结果图论主成分分析的基本步骤可概括为：①对中心化基因频率的协方差矩阵进行主成分分析；②按图论原理求过m维空间n个点的最小生成树；③利用求"颈"法分割最小生成树；④将最小生成树整合到二维主成分散点图中构建图论主成分分类图。

Such as Markowitz"s modern assets portfolio theory, Sharp, Minter and Mossin"s Capital Assets Price Model; Ross"s Arbitrage Pricing Theory; Black-Scholes"s the option of fixes the price classical capital market theories. They are all based on EMH.

例如马克维兹现代资产组合理论，Sharp、Minter、Mossin的资本资产定价模型，罗斯的套利定价理论，Black-Scholes的期权定价公式等经典资本市场理论，都是以有效市场假设为前提的或者与之有密切的联系。

Based on the research of chaos and software requirements complexity theory, a theory model was proposed.

在基于混沌理论和软件需求复杂性理论研究的基础上，提出一种理论模型。

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。