查询词典 numerical

Bifurcate tunnel; Mechanical behavior; Numerical simulation; Stress influencing factors

分岔隧道；力学行为；数值模拟；应力影响因素

First,a type of numerical solution is proposed to deal with branchswitching at a simple bifurcation point.

提要 在非线性静分岔问题中，针对多自由度高维问题，本文提出一种通用的计算分岔。。。

Then the relation between the parameters of PI controller and the bifurcation point are obtained by using numerical calculation.

应用谐波平衡法推导出带PI补偿电压模式buck变换器的输入电压分岔点关系式。

Numerical examples show that there is generally no bifurcation point in the post-buckling path, this is a distinct difference between cylindrical shells under hydrostatic pressure and those under axial compression.

计算表明，加肋圆柱壳在水压下的后屈曲路径一般来说是稳定的，这是和受轴压圆柱壳的明显区别。

Numerical simulations performed on other typical reaction-diffusion models confirm this analysis and suggest that our findings are robust and independent of the type of bifurcation, and even whether the system is close to or far from the bifurcation point.

这些结果，不但与具体的模型没有关系，而且也不依赖于系统所经历的Hopf分岔的类型，甚至系统是否远离分岔点。

It is possible to analyse nonlinear power system stability due to the development of the bifurcation and chaos theory and improvement of numerical techniques.

分叉和混沌理论的发展及现代数值计算技术的进步为电力系统中的稳定问题提供了强有力的分析工具。

IN CHAPTERR. THREE,we study the wavelet numerical solution of simply-supportedboundary value problem of biharmonic equation.

第三章，我们考察了双调和方程简支边值问题的非平稳小波数值解。

Based on linear bending theory of thin elastic plate and fundamental solution constructed with the general solution principle of biharmonic equation, a meshless method was developed for establishing a computational format of numerical solution of thin plate bending.

基于弹性薄板的线性弯曲理论和重调和方程的一般解理论构造的基本解，建立无网格法求解薄板弯曲问题的数值计算格式。

This paper presents the boundary value problem solved as the biharmonic equation of upper plane and strip domain with Green functional method and it deals with the numerical solution of bihormonic equation, using the Matlab program calculation to realize the visualization of numeric solution.

用Green函数法求解了区域为上半平面和带形区域的双调和泊松方程的边值问题；以及探讨了双调和方程的数值解，并用Matlab编程计算实现了双调和方程数值解的可视化。

In this paper we study the method of interpolation by radial basis functions in H~k(k ≥ 1) and give some error estimates. By means of such interpolation with a special kind of radial basis function, we construct a basis in H~k(k ≥ 1). Combined with the Galerkin method, this theory can be applied to solve boundary value problems for elliptic partial differential equations (such as the third boundary value problem for Poisson equation and the corresponding problem for the biharmonic equation), and some numerical experiments are also given.

本文从求解偏微分方程的角度出发，在被逼近函数u属于一般的Sobolev空间H~k(k≥1)的情形，引入了一种径向基函数插值方法，并建立了相应的误差估计；再利用这种插值性质，从一类特殊径向基函数出发构造Sobolev空间的一组基，针对Poisson方程第三类边值问题和重调和方程类似边值问题，为用无网格算法求解偏微分方程边值问题建立了相应的理论，并通过算例来验证了这一算法。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。