查询词典 initial condition

We can not apply Galerkin methods with radial basis functions to the first boundary value problem (the Dirichlet boundary value problem) of the second-order elliptic equation, because it requires that the approximate functions should fit the essential boundary condition, while the spaces spanned by the radial basis functions fails to satisfy this kind of boundary condition, and it is the same for the higher-order elliptic equation.

我们不能直接应用这样的无网格算法求解二阶椭圆型方程的第一类边值问题(Dirichlet边值问题)，因为第一类边界条件是本质边界条件(对二阶椭圆型方程为Dirichlet边界条件)，而径向基函数的支集通常是全空间，由它们所生成的近似函数空间一般不满足这样的条件。

Based on the good essential boundary condition processing capability of radial point interpolation meshless method, as well as the better computing efficiency of Element-free Galerkin method, the mixed method coupling EFG and RPIM is used to deal with the essential boundary condition.

基于径向基点插值无网格方法良好的本质边界条件处理能力，以及无网格伽辽金方法较好的计算效率，应用混合元法耦合两种无网格方法进行了本质边界条件的处理，数值算例结果表明：混合元法简明有效，计算概念清晰，易于编程计算。

We obtain a sufficient condition and a essential - sufficient condition about convergence at the end point of the convergence interval of power series.

通过对阿贝尔定理的深入探讨，获得了幕级数在其收敛区间端点收敛的一些判别条件。

Because the condition is not only, the paper has given some weaken condition of exchangeability between the mathematics symbols.

由于可交换性的条件并非唯一，本文还给出了一些数学符号可交换性条件的减弱。

4The health condition of typical steppe in different exclosure period was evaluated by grey correlation analysis, fuzzy comprehensive evaluation, VOR index and CVOR index, the result showed that all of the methods used above could be used to evaluate the health condition of typical steppe.

4采用灰色关联分析、模糊综合评价、VOR和CVOR指数模型四种评价方法对不同围封年限典型草原的健康进行了评价，评价结果一致，说明四种方法均可作为典型草原健康评价方法。

Therefore, the purpose of this research mainly lies in: First, to understand the role and the fixed position of the social worker in the system organization over a long period of time; Second, to examine the condition and attitude of the social worker in the system organization; third, to understand the mental condition and expectance of the social worker in the system organization.

因此，本研究的目的主要在於：一、了解社会工作人员在长期照护体系机构里的角色与定位、二、检视社会工作人员在长期照护体系机构里的工作状态与心理状态、三、了解社会工作人员在长期照护体系机构里的心理调状适与未来期待。

Result: The inductivity of leaves was the highest about 87.5%, followed with the stem section and leafstalk; The inductivity of nutrient medium such as MS, B5 callus was higher than the ones like H, SH and the White callus amended one; It was found that low-grade Phvalue benefits the growth of callus. The experiment result showed that different pH showed little difference in quality. The best condition of culture was 25 ℃in temperature. Conclusion: The best culture condition for callus was the leaves as explantation.

结果：叶片的诱导率最高，为87.5%；茎段次之，叶柄较差；培养基MS，B5愈伤组织诱导率较高，达到了80%以上，高于培养基H，SH和改良White的愈伤组织诱导率；偏低的pH对愈伤组织生长有利，出愈率高，但从愈伤组织生长质量方面看，不同pH差异不明显；愈伤组织诱导最适温度为25 ℃。

The smooth condition for discrete series is studied, and some mistakes about the white exponential law is pointed out. The author proposes the modified condition of white exponential law which makes the data to apply the GM model.

研究了灰色系统理论中的关于离散数列的"光滑性条件"，指出其原有的"白指数律条件"的局限性，提出了新的修正型白指数律的条件，从而为数据应用灰色系统模型提供了检验方法。

On the basis of analyzing detailedly the correlative conclusions of the extreme value problem of two variable Function , this paper extends the essential condition and sufficient condition to multi-variable function by using the Taylor Formula 、Quadratic Form 、Hesse Matrix and so on,and gives a method to judge the extreme value of point whose vice-derivative doesn't exist by utilizing Lagranges theorem ,so that compensates for the blank above ,which turns idea that solve the extreme value of multi-variable function problem one by one into realities.

摘要本文在对二元函数极值问题的相关结论进行分析的基础上，用泰勒公式、二次型、海赛矩阵作为工具，将二元函数极值的必要条件和充分条件推广到多元函数的情形，而且还利用拉格朗日中值定理找到了一个判别不可导点处极值的方法，从而弥补了多元函数不可导点处极值无法判断的空缺。因而，使得用穷举判断的方法来解决多元函数的极值问题这一思路成为现实。

The touch condition of the first and second interlayer have greater influence to the tension stress of the bottom layer.The first interlayer has fatefully influence to the shear stress, while the touch condition of the third interlayer affects the compression strain of the top of ground.

基于以上考虑，面层与半刚性基层、高强度的半刚性基层与低强度半刚性底基层、底基层与土基的3个接触面是半刚性路面结构的最薄弱的地方，分别定义为第一、第二、第三接触面。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。