查询词典 model theory

Based on the analysis, the paper makes use of the option-game theory to establish the different value model, including the time ascertainable and the time uncertain of new technology coming, and then analyzes the strategy of two enterprises.

在此基础上区别于以往的研究，本文综合引入了竞争、成本差异、新技术到来时间不确定及利润流等因素，建立了竞争环境下两家企业技术采纳行为的期权博弈模型，并进行数值分析与讨论。

Using the optimum theory, this paper inquires into how to build the unit assemblage system mathematical model.

利用最优化理论，研究了在汽车性能模拟中的一个重要问题：建立汽车有关总成系统的数学模型。

At present,the classical risk model has been deeply researched and some important results have been educed,as have established astable foundation for the further development of the risk theory.

如今，对经典模型已有了很深入的研究，得出了很多重要的结果，为破产理论的发展奠定了坚实的基础。

The diffusion equation and viscoelastic stress model were coupled. We obtained an asymptotic solution by the perturbation theory.

在这一部分中我们采用了将扩散与粘弹性相结合的方程来刻画溶剂在玻璃态高分子材料中的移动。

This value is prescribed only vaguely by many authors with no reference to any significance level. This paper will give out an asymptotic critical value in a fixed significance level and an asymptotic p-value for testing by means of extreme value theory in order to detect outliers in AR model.

本文运用极值理论给出诊断AR模型异常点选取临界值的分布近似方法，这种方法选取的临界值可保证控制在一定的显著性水平下，而且还可以计算出检验的渐近p值，比一般仿真选取的临界值更科学合理。

This paper consists of three parts: Firstly, we discuss a nonautonomous -species two-patches cooperative Lotka-Volterra diffusion system. Using Brouwer fixed-point theory and Liapunov function, under some conditions, we obtain that the system has a unique globally asymptotically stable positive periodic solution. Secondly, we consider a kind of nonautonomous predator-prey model, in which preys are with stage structure and the predator are with two patches.

中文摘要：本文分三部分讨论三类生态模型周期解或概周期解的存在性及全局渐近稳定性等内容：第一部分讨论了两斑块种群的互惠Lotka-Volterra扩散系统，运用不动点理论和构造Liapunov函数，得到了系统存在唯一一个全局渐近稳定的正周期解的充分条件。

Building on the work of his mentor Ernest Rutherford, Bohr developed his own atomic model that clarified and expanded the field of quantum theory.

工作的基础上他的导师欧内斯特卢瑟福，玻尔开发自己的原子模型，澄清和扩大领域的量子理论。

Taking example for A-type three-level atomic system, the theoretical model of EIT effect was given using semi-classical theory.

以A型三能级原子系统为例，用半经典理论给出了EIT效应的理论模型，分析了EIT介质的吸收和色散特性。

Based on the Miedema′s theory of electric charge shift,a modification of Mo-reen′s model of prediction of the lattice parameters in solid solution was approachedfrom the idea of the atomic size and separation in solid solution changing withsolute concentration.

根据Miedema电荷迁移理论，引入固溶体中原子尺寸和间距随溶质浓度改变的观念，修正了Moreen的固溶体品格常数预测模型。

The model utilized Density Functional Theory, which uses mathematics to mimic the atomic structure of a material.

模型利用了密度功能理论，用数学来模拟一个材料的原子的结构。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。