模型理论

A theoretical comparison is conducted to demonstrate that when autocorrelation coefficient and moving average coefficient are positive, the safety stock with a variable reorder level is less than that determined by means of moments of demand, but more than that with traditional reorder point approach.

理论分析得出，在需求呈正相关且随机误差项平滑系数为正数时，变化订货点水平确定模型得出的安全库存低于根据时点需求得出的安全库存，而高于传统模型得出的安全库存。

The study of coalgebraic methods, as one of the active areas for theoretical computer science in recent years, is widely used in concurrence computing model, automat theory, and the foundations of object-oriented technology.

共代数方法是近几年来理论计算机科学的研究热点之一，在并行计算模型、自动机及面向对象技术的理论基础方面有着广泛的应用。

Based on the theoretical model,we design a Vector Autoregression Model and conduct empirical analysis to understand the relationship of real exchange rate, economic growth and interest rate.

根据理论模型的动态特点，设计了一个向量自回归模型，用来实证分析实际汇率、经济增长率和利率的关系，回答了当前条件下人民币实际汇率是否高估的问题，提出了实际汇率调整的三种途径及其政策涵义。

This paper use five up and out warrants that have been issued in Taiwan, assuming the returns of their underlying assets follow the generalized autoregressive conditional heteroskedastic process. We can estimate their parameters by in-sample data, and simulate the price of underlying assets and also the theoretical price of the up and out warrants.

本文选取在台湾发行之五档上限型的认购权证假设其标的资产报酬率服从GARCH(1，1)模型，利用样本内的资料模拟GARCH(1，1)模型的参数，并利用估计出来的参数模拟标的资产样本外的价格以及上限型认购权证的理论价格。

The frequency response model of HAGC is estimated with correlative identification theory. The dynamical parameter model HAGC is estimated with LS, auxiliary variable LS, and bias-compensating LS respectively. It is proved with experiment that the methods proposed in the paper are accurate and practical.

5用相关辨识理论辨识了液压AGC压力闭环系统的频率特性，分别用普通最小二乘法、辅助变量法及偏差补偿算法辨识了该系统的动态参数模型，辨识结果验证了论文理论研究成果的正确性和可行性。

The method utilizes fuzzy ordered weighted averaging operator to aggregate the fuzzy linguistic evaluation information given by experts, and then uses the expected values formula of triangular fuzzy numbers to obtain the weighted vector of factors determining the scale of logistics park.

结合模糊集理论和多属性群决策理论，提出基于模糊语言多属性群决策的物流因区规模确定模型。

Therefore, this chapter, in the first place, discusses the axiomatization of theory ofevolution and introduce in detail Williams' axiomatic system about evolution. Insecond place, it discusses the dissipative theory and the hypercycle theory. Thisdiscussion is actually about a kind of semantic which is the molecular model.

因此，在这一章，首先，对进化理论的公理化形式进行讨论，详细介绍了Williams进化论的公理系统；其次，讨论耗散结构理论和超循环论，实际上是讨论了关于进化论的演绎公理系统的一种语义或分子层次的模型。

A kind of integrated model based on theory of axiomatic design and solving theory of invention problems has been put forward.

提出了一种基于公理设计理论与发明问题解决理论的集成模型。

These models expounded the effect factors in the separation of azole antifungal agents and phosphonate esters on the CDMPC chiral stationary phase, and afforded as theoretic support for this kind of separating experiments.

这些模型从理论上阐述了这两类化合物在CDMPC上拆分过程中的影响因素，为这类手性固定相上的类似拆分实验提供了理论支持。

Based on the classical theory of interior ballistics , the model of this device is built.

以某种新型的燃气式活塞弹射机构为研究对象，运用经典内弹道学理论分析了整个弹射过程，建立了弹射机构的数学模型，并对该数学模型进行仿真。

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％。