查询词典 numerical analysis

On the basis of theoretical analysis of digital holography, the preliminary study carries out through computer simulation and experiments. The main work is as follows:Firstly, on the basis of off-axis Fresnel diffraction, the principles of optical holography and digital holography are introduced. Besides, the theories such as recording digital hologram, numerical reconstruction and the related digital image processing methods are analyzed.

本论文从理论分析、计算机仿真和实验三个方面对数字全息技术进行了初步的研究，主要完成了以下工作：首先，介绍了传统的光学全息术和数字全息技术的基本原理，以离轴菲涅耳全息为例对数字全息的记录条件、数值重现算法、以及相关的数字图像处理方法进行了详尽的理论分析。

The rigorous full-wave analysis of monolithic microwave integrated circuits and microstrip antennas has been made possible due to large increases in computing power and the development of a number of numerical techniques.

随着计算能力的提高和数值方法的发展，单片微波集成电路和微带天线的严格全波分析有了可能。

Therefore, a new and functional numerical method and quantitative analysis method are provided.

因此对该类问题的研究提供了新的实用的数值解法和数值分析方法。

The numerical results of ultimate uplift resistance coefficient obtained by using two typical normally consolidated clay, gault and kaolin clay agree well with limit analysis accurate solution.

重粘土和高岭土两组典型正常固结土样所得的极限承载力系数与极限分析给出的精确解一致。

Gauss numerical integral method is used in the precise elasto-plastic analysis of structures andthus the development of plastic deformation along the section and the length can be considered.

并通过与实体模型计算效率和计算精度的比较，说明了本文的分析力学模型、分析方法和分析程序的正确性、精确性和有效性。

Base on the fact that a hard-edge aperture function can be expanded into a finite sum of complex Gaussian functions, the approximate analytical expressions for the propagation characters of Hermite-Guassian beams passing through double rectangular apertured are derived. The approximate analysis uses Collins formula. At last, Matlab illustrates some numerical examples.

基于硬边孔函数能拓展成一组有限复高斯函数的和，研究厄米－高斯光束通过双矩孔的传输特性，用Collins公式分析，用Matlab进行一些数值模拟。

The stability analysis of the analytic and numerical solutions of the general nonlinear impulsive differential equation is considered.

考虑了一般的非线性脉冲微分方程，对该方程进行了解析解和数值解的稳定性分析。

The basic diagnostic statistics such as Cook distance, generalized leverage and residuals et al. are introduced, and the equivalency of case deletion model and mean-shift outlier model is investigated. Some specific problems, such as local influence analysis and the test for heteroscedasticity are discussed. Finally, numerical examples are given to illustrate our diagnostic methods.

首先，证明了均值漂移模型与数据点删除模型的等价性定理并定义了残差、Cook距离等诊断统计量；其次，研究了异常点的Score检验统计量；第三，研究了该模型的局部影响分析，得到了局部影响分析的曲率度量；第四，研究了该模型的异方差检验问题，得到了检验异方差的Score检验统计量和修正的Score检验统计量；最后，通过实例分析验证了这些诊断方法的有效性。

Numerical stimulation analysis for stability of pile stickup with geometrical nonlinear 3 D finite element method in pile foundations of ocean platforms is performed .

结合海洋工程的设计实例，借助三维非线性有限元分析方法，考虑桩身变形的几何非线性特性，研究了桩身倾斜度，支撑情况以及水平荷载等因素对桩身自由站立稳定性的影响规律，并将线性分析方法和非线性分析方法得到的结果进行了比较。

Numerical weather forecasts Global spectral model Distributed and shared memory parallelization Global analysis and assimilation

数值天气预报；全球谱模式；分布共享并行；全球分析同化

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。