查询词典 variational problem

At first, we give the more precisely expression of the system in some sufficiently small neighborhood of the saddle point under some suitable transformation, and use the foundational solutions of the linear variational equation of the unperturbed system along the homoclinic or heteroclinic orbits as the demanded local coordinate system.

首先，我们在鞍点的充分小邻域内给出系统在适当的变换下的更加精确的表达形式，利用未扰系统沿同宿，异宿环的线性变分方程的基本解组作为系统在同宿，异宿环的小管状邻域内的新的局部坐标系。

A variational study on the propagation equation of bright soliton-like pulse under the influence of the fifth-order nonlinearity in optical fiber.

刘文军。五阶非线性作用下光纤中类明孤子运动方程的变分研究。

The variational formulation is solved by linear boundary elements in this paper.

在求得边界上的中间变量—向量密度场的同时，也确定出压力、无穷远处的流速。

The present variational formulation will be used to achieve a novel semi-analytical formulation for more complex piezoelectric material problems in engineering applications.

本文的变分公式将用来构造新颖的适应工程领域复杂压电材料问题的半解析法。

The characteristics equation for the distance is derived by using the variational formulation for a generalized resonator.

应用谐振腔的变分公式，导出了确定短路面之间距离的特征方程。

A variational formulation is proposed to derive the corrosion coefficient, based on the Dirichlet-Neumann data on the accessible part.

在无需假设板或营的厚度很薄的条件下，提出了一个基于Dirichlet-Neumann条件求解腐蚀系数的变分模型。

Mainly includes the classical theory (Green's function, maximum principle, etc.) and the variational formulation.

主要内容包括古典理论(格林函数、极大值原理等)和变分公式化。

Moreover,the weighted residual method is utilized forestablishing the generalized variational formulation for solving three-dimensional eddy-current problems.

此外，介绍了用加权余量法建立三维涡流问题的等价广义变分问题的基本方法。

Dissipative and coherent effects of X-point solitons are investigated on the basis of dynamic variational formulation in two_dimensional photonic bandgap structure of square lattice.

采用变分方法对于二维矩形光子带隙结构中X点孤子的耗散以及相干作用进行了动力学分析。

To avoid the trouble to construct the basis functions, we introduce a Lagrange multiplier into the variational formulation to replace the constraint condition for the basis.

本文采用同样的思路用Galerkin 边界元方法求解带有约束条件的与第一类Fredholm 间接边界积分方程等价的变分方程，为避免构造基函数时约束条件的限制，我们采用Lagrange 乘子法，把约束条件放入变分方程中去，形成扩展的变分方程，用线形单元离散后求解。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。