查询词典 variational

At the same time, variational equations, their finite element formulations and numerical convolved integration algorithm of the model in current configuration usually called co-moving coordinate system are given.

基于非线性几何场论，建立了材料非局部连续模型、变分方程及相应的实时拖带系大变形有限元数值模型，设计了这一模型的数值卷积算法。

Firstly, the lake water quality model is developed under the condition of both internal and external pollution by using the method of microelement analysis, then homogenizes the non-cylindrical boundary condition and utilizes the methods of vector expending and pseudomonotone of the variational operator, and last the existence and uniqueness of the solution for a type free initial-boundary value problem is obtained.

本文首先运用微元分析法导出在外源和内源双重污染下湖泊水质模型，然后对一类自由初边值问题通过对非柱形边界条件的齐次约化，运用变分型算子的向量扩张和拟单调方法获得解的存在性、唯一性。

It is organized as follows:In Chapter 1, we introduce proximal point algorithms" framework and current research situation, optimization problems and variational inequalities" background and current research situation, and some basic concepts and lemmas, which are used in this dissertation.

本文具体安排如下：第一章简要介绍了邻近点算法的基本框架和研究现状，最优化问题和变分不等式问题的背景和研究现状，以及本文需要用到的一些基本概念和引理。

In the dynamics of total litterfall and litterfall components, there were seasonal variations and leaf was the basis. Nutrient content of most elements and litterfall have alike variational trends. Above-mentioned results exhibited that leaf had the conclusive influence on total litterfall and nutrient content.

总枯落量与枯落物各组成分均有季节性变动，且皆以枯落叶为主(70-75%)，而枯落叶与枯落物内多数元素的养分含量与其总枯落量有相似的变动趋势，以上结果显示枯落叶对总枯落量及养分含量有决定性的影响力。

On the basis of design of a new type bilateral excitation electromagnetic vibrating head, a simplified mathematic model was set up through predigesting electromagnetic field to electromagnetic route method, and motion function of the system was also obtained based on variational theory and non-conservative system Lagrange function.

在设计了一种新型的双边激励的电磁式振动头的基础上，采用将磁场简化为磁路进行分析计算的方法建立振动头的简化数学模型，并根据变分原理及非保守系统拉格朗日方程得出系统的运动方程。

The optical soliton propagation in monomode optical fibres with third-order dispersion is reinvestigated by using variational method. The evolution equations for optical soliton parameters are found, and self-wave-peak shift phenomena is explained quantitatively.

用变分法重新研究了单模光纤中的三阶色散对光孤子传输的影响，找到了光孤子参数的演化方程组，定量地解释了光孤子的自波峰漂移现象。

At last, the variational rules and characteristics of reserving water quality are studied.

最后，对大中型贮水构筑物内贮存水的水质变化规律和水质特征进行了探讨，提出了贮水工艺。

The combination with the Calculus,physics,especially variational principles and geometry is one of the features of tiffs dissertation.

本文在查阅大量原始文献和相关研究文献的基础上，利用文献分析和比较研究方法，以&为什么数学&为切入点，结合微积分学、物理学以及几何学等背景，对变分法的起源和创立进行了系统分析和研究。

My research tries to find the variational characteristics of the lung cancer patients'sublingual venae, which can be use as the basis for general investigations of highly dangerous people, and diagnose and treat lung cancer patients in the early stage. It will be play an important role in improving the level of peoples'health.

将研究对象分为4组，观察组选择经病理学检查或细胞学检查确诊的152例原发性支气管肺癌患者，其中男88例，女64例，平均年龄60.04±11.98岁，临床分期Ⅰ期32例，Ⅱ期26例，Ⅲ期52例，Ⅳ期42例，经病理确诊的共81人，其中非小细胞肺癌66例，小细胞肺癌15例。

Angular Momentum Algebra, Addition of Angular Momenta, Identical Particle Effect, One Dimensional Periodic Quantum Systems, Introduction to Quantum Statistical Mechanics, Time-independent Perturbation Theory, Fine Structure, WKB Approximation, Variational Principle, Aharonov-Bohm Effect, Quantum Transition.

量子力学( S0583)(0，3)角动量代数、角动量加成、等同粒子效应、一维周期性量子系统、量子统计简介、定态微扰理论、精细结构、 WKB 近似、变分法、 Aharonov-Bohm 效应、量子跃迁。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。