比较函数

This paper presents a detailed analysis and comparison of14 modelfunctions,published in the open litera ture,forretrievingseasurface wind speedfrom satellite altimeters.

对迄今为止国际上公开发表的14 种卫星高度计反演海面风速的模式函数进行了系统的分析和比较。

By analysis and comparing with other kind of control system, according to the demands of the servo system for the Chamfering machines, the servo cylinder of the system was designed, the parameters of the opponents that was used for control and feedback in the system was calculated. Finally, the mathematics model of the position-feedback system was established, according to the model, the simulation frame was provided.

根据倒棱机对伺服控制系统的要求，通过分析及与其它控制系统的比较，设计了电液伺服系统的伺服油缸，确定了电液伺服系统控制及反馈元件性能参数，最后建立了位置控制闭环反馈系统的各个环节数学模型，并在此基础上绘出了伺服系统传递函数框图。

But the conventional CoM FA exists some defects, including the selection of potential function of molecular field, the determination of bioactive conformers, the molecular alignment and the selection of variable of molecular fields, etc.

但传统的比较分子场分析方法在具体的实现过程中还存在着一些缺陷和不足，包括分子场势能函数的选择，活性构象的确定，分子的叠合以及分子场变量的选取等等。

The paper discusses moment estimation of parameters on Copulas with two kind of methods-moment estimation and approximate moment estimation, and compares two methods by simulation.

本文研究了Gumbel Copula函数的参数佑计，提出了矩估计和近似矩估计两种方法，分别得到了未知参数的估计结果，并通过模拟研究对这两种方法进行了比较，结果显示矩估计方法更为合理。

To hydrological system, the samples of the hydrological factors are not sufficient, and the infection factors that formated is complex, the suppose of the probability distribution function that accord with the practical condition then undergo parameters estimation are impossible.

特别是对水文系统，各种水文要素的样本不多，且其形成的影响因素复杂，要假设出合乎实际情况的概率分布函数并进行参数估计是比较困难的。

We make a rather thorough review of the QCD sum rule approach, which includes the correlation functions and the spectral representations, OPE, Borel transformation, the fixed point gauge, condensates and their empirical values, Borel stability, the dispersion relation and the commonly used

我们对于 QCD 求和规则作了比较全面的评述，包括：关联函数与谱表示；算符乘积展开；Borel变换和固定点规范；凝聚量及其经验值；Borel 稳定性；色散关系和谱密度的常用模型；Wilson 系数的计算；外场方法等。

Based on the comparison of different algorithms of energy,we create a target function, and use grads method to realize localization.

本文在比较基于能量的各种算法的基础上提出了建立目标函数，用梯度法实现定位的算法。

Secondly, we improve Minimum Semi-variance Model with fitting the joint probability density function of rate of return between futures and spot prices based on wavelet density estimation method for improving goodness of fit for the first time.

其次，为提高估计的精度，对最小半方差模型提出了进一步改进，首次引入小波密度估计的方法拟合期现货收益率的联合密度函数，并与经验和正态核密度估计方法进行了比较。

Optical transfer function of a specific lens is determined,and a image of the lens is calculated in the screen with separate variable by computer calculation.

如果我们能够得到一个具体光学系统的传递函数，那么就能比较容易的算出光源经过光学系统所成的像。

To model and compensate the magnetic heading error of the magnetic compass system which in a carrier with some pitch angle or roll angle,a new deviation compensation algorithm based on RBF neural network is presented.A BP neural network has been developed to solve the same problem for comparison.

针对具有一定俯仰角或横滚角的磁罗盘系统磁航向误差建模和补偿问题，提出了基于径向基函数神经网络的修正方法，并与BP神经网络方法进行了比较。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。