在论文中，我们主要讨论了四阶椭圆问题的一些非协调有限元逼近。
In this thesis, several nonconforming finite element methods for plate problems and fourth order elliptic singular perturbation problems are discussed.
在区域的两个不同部分分别采用协调元和非协调元来研究二阶椭圆问题。
The second order elliptic problem is studied by using conforming finite element and nonconforming finite element in the different parts of the area respectively.
文章给出了三角网格上二阶椭圆问题广义差分方法的一种新的误差估计方法。
In this paper, a new method of error estimate for the generalized difference method of second order elliptic problems on triangle grids is given.
讨论了一类具有奇异性的椭圆问题解的存在性。证明了在一定条件下，弱解存在。
This paper discusses the existence of a class of singular elliptic boundary value problems. Under certain conditions, we prove that weak solutions exist.
研究了无穷边界的二阶椭圆问题，探讨了将其转化为一阶系统的最小二乘有限元逼近方法。
A least-squares mixed finite element methods for the first-order system formulation of second-order elliptic problems and a formulation for the infinite boundary conditions are presented.
总结了谱方法椭圆问题与双曲问题中的研究进展 ；论述了球面坐标和极坐标下的谱方法 ；
The development of spectral method on elliptical and hyperbolic problems is summarized, and spectral method under sphere coordinates and polar coordinates is touched too.
本文针对带有间断系数的三维椭圆问题，讨论任意四面体剖分下的二次拉格朗日有限元方程的代数多重网格法。
In this paper, we consider a quadratic Lagrangian finite element equation arising from discretizations of 3d elliptic problem with jump coefficients under any tetrahedral partition.
在数据中使用不匹配的椭圆体模型一般是主要问题。
Using mismatched ellipsoid models in your data is not generally a major problem.
本文用分片线性元离散椭圆型问题。用预处理共轭梯度法求解有限元方程。
In this paper, the elliptic problems are discreted by linear elements, the finite element system are solved by PCG method.
薄膜障碍问题是第一类椭圆型变分不等式的代表性模型。
The obstacle problem is the typical example of the elliptic variational inequality of the first kind.
它们的安全性都是基于椭圆曲线离散对数问题。
All of their security is based on elliptic curve discrete logarithm problem.
两种方案的安全性都是基于椭圆曲线离散对数问题的难解性。
Both of their security are based on the intractability of elliptic curve discrete logarithm problem.
采用完全变换法施加本质边界条件，给出求解椭圆型边值问题的无网格伽辽金方法。
The full transformation method is used in element-free Galerkin method for solving the elliptic boundary value problems.
该文描述了代数几何与ecc的数学基础及椭圆曲线离散对数问题困难性，讨论了ECC在电子商务中的安全应用。
This paper describes the mathematics base of algebraic geometry and ECC. It also discusses the elliptic curve discrete logarithm problem (ECDLP) and the security applications of ECC on E-commerce.
零知识身份认证是当代密码研究的一个引人入胜的问题，而椭圆曲线相对于其它密码体制具有更高安全性。
The zero-knowledge status authentication is a fascinating question of contemporary password research, and the elliptic curve is the cipher system having higher security in comparison with others.
此系统是基于椭圆曲线离散对数表示问题的。
The system is based on expression question of elliptic curve dispersed number.
这些结果能被用来研究椭圆边值问题径向对称解的存在性。
These results can be applied to study the existence of the radial solutions for the elliptic boundary value problems.
本文第一部分主要考虑在各向异性网格下用矩形单元对二维空间中二阶椭圆边值问题进行逼近。
Two kinds of rectangular elements are considered to solve the two-dimensional and second-order elliptic boundary value problem on anisotropic meshes.
研究无穷凹角型区域椭圆边值问题的一种非重叠型区域分解算法。
In this paper, we investigate a nonoverlapping domain decomposition algorithm for elliptic boundary value problems with infinite concave Angle domain.
本文利用摄动方法和上下解方法，讨论了一类奇异非线性椭圆边值问题，它具有很好的应用背景和理论意义。
In this paper, a singular nonlinear elliptic boundary value problem which is very important in applied science and pure theory was discussed by the method of perturbation, sub-and super-solution.
本文主要考虑在一类各向异性网格(我们称之为gatm)下用一些三角形单元逼近二维空间中二阶椭圆边值问题。
Some triangular elements are considered to solve the two-dimensional and second-order elliptic boundary value problem on a class of anisotropic meshes (we call them GATM).
多重网格法是求解椭圆型方程边值问题的一种快速迭代算法。
The multigrid method is an efficient numerical iteration algorithm for solving elliptic variational problems.
探讨了如何求解线性温变和点热源作用下椭圆夹杂问题的温度函数。
The temperature field for the problem of an elliptical inclusion under a linear temperature change or a point heat source is provided.
获得纵向剪切下弹性椭圆夹杂问题的精确解。
A precise solution of elastic elliptical inhomogeneity problem under antiplane shear was provided in this paper.
研究了适合于高速胶印机的纸张输送机构———椭圆齿轮变速输纸机构的优化设计问题。
An kind of optimal design of elliptic gears for the paper-transferring mechanism with variable speeds is introduced in this paper to meet the need of high-speed offset press.
在椭圆曲线密码体制的实现中，选取安全的椭圆曲线是首要问题。
In the implementation of the elliptic curve cryptosystem, we first have to select a secure elliptic curve.
一些半椭圆表面裂纹问题的计算表明本文给出的关系式简单、有效。
Calculated results show that this relationship can be successfully used to describe the fracture behavior of surface crack problems.
通过对椭圆曲线密码体制的研究，将快速实现椭圆曲线密码的问题归结为标量乘法的实现效率。
By investigating the elliptic curve cryptosystems, the problems are reduced the fast computations of scalar multiplication of the elliptic curve.
通过对椭圆曲线密码体制的研究，将快速实现椭圆曲线密码的问题归结为标量乘法的实现效率。
By investigating the elliptic curve cryptosystems, the problems are reduced the fast computations of scalar multiplication of the elliptic curve.
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