查询词典 first approximation

In this paPer, lattice dynamics of a monatomic chain arestudied by employing the method of multiple scales combined withquasi-discreteness aPproximation.

本文，我们主要通过引进多重尺度，并利用准离散近似方法对单原子链中的晶格动力学作了一些研究。

In this paper, a method of digital approximation is used to approach the function of crustal movement, px.y.

本文运用数值逼近法去逼近地壳运动函数p=f，进而分别导出了按条件观测平差和按间接观测平差的严密公式。

The method of Fourier series approximation was used for determining the Future Freight rate model as function of time and current spot freight rate. It was shown that it is very flexible and versatile since it can be applied quickly and easily to any main shipping route.

傅立叶级数近似值法被用来确定以时间和当前即期费率构建的函数的远期费率模式，此种方法是非常灵活多变的，因为它可以被快速容易地应用于各个主要航线。

Simulation results for both artificial and real data show the generalization performance of our method is a good approximation of SVMs and the computation complexity is largely reduced by our method.

文中最后对人工和实际样本进行了实验，结果说明了线性规划支撑矢量机在推广能力上较好地逼近了原支撑矢量机，而在计算复杂度上明显低于原支撑矢量机。

For the data set with noises, a regularization intropolation method is proposed according to regularization theory. The relation between the regularization intropolation method and radial basis function method is analysed and structure of regularization neural networks is proposed. RBF neural network is introduced by mortifying the regularization neural networks. Finally the approximation capacity of RBF neural networks is analysed. 4. A method of selecting the centers of hidden layer neurons of RBF neural networks is proposed.

首先从精确内插问题开始对RBF神经网络进行讨论，然后根据正则化理论提出了在数据集带有噪声的情况下的内插方法，并分析了这种内插方法和径向基函数方法之间的密切联系以及其对应的正则化神经网络结构，其次对正则化神经网络进行了修改，得到正则化神经网络的简化形式—RBF神经网络，最后分析了RBF神经网络的逼近性能。

Based on inverse equation, the forward solution model of position is presented in this thesis through method of successive approximation, for parallel robots possess characteristic of easy inverse solution and difficult direct solution. The method is proved to be highly effective by simulation example.

根据6-SPS并联机器人反解容易、正解较难的特点，本论文基于位置反解方程，通过杆长逐次逼近的思路建立了位置正解模型，并对该方法进行了实例验证。

In this paper, we study the decreasing types of the output of oil field opened by pouring water and the successive approximation method of its solution in mathematics and seepage flowing mechanics.

从数学和渗流力学概念对注水开发油田产量递减类型和判别求解方法进行了研究，提出产量递减类型应为指数递减和双曲线递减两种类型；双曲线递减的递减指数n的变化范围应为0＜n＜∞；递减类型判别和递减参数求解方法可以根据最小二乘法原理，采用数学逐次逼近法直接求解产量随时间递减的关系式。

Aimed at the optical radar system that commonly used by shooting range,based to the light-wave radial′s operation trajectory in atmosphere,and using the method of successive approximation,we obtained an applied atmospheric refraction error correction method of optical radar.

针对靶场常用的光学雷达系统，根据光波射线在大气中的运行轨迹，利用逐次逼近法得到了实用的光学雷达大气折射误差修正方法。

The hydrodynamic theory of viscous lubrication is studied from Navier-Stokes differential equations ,by the method of successive approximation based upon the smallness of the film thickness.

本文基於Navier-Stokes氏微分方程式，研究粘滞性液体层的滑润作用；此种流体动力学的理论，乃依据液体层之薄度进行续步渐近之解法而得。

The procedure is based on the concept that the critical load of a frame without sidesway is the same as the smallest value among these critical loads of the compression members of the frame with partially restrained ends, and the critical load of every compression member may be determined by the method of successive approximation.

将组成刚架的各桿件视为两端受不同约束的桿件，用静力学的方法求出此等桿件相应的临界荷重，其中最小值即为刚架的临界荷重，举有实例以示演算程序。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。