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Therefore,we know that under the mean of statistics, interpolation operators are not only ideal algorithm for realizing optimal approximation polynomials computation,but also ideal computing tool for realizing optimal information- based operation,and the property of their recover functions are good.

这说明了在统计学意义下,插值多项式算子一方面是实现最佳逼近多项式计算的理想算法,另一方面(来源:ABCdd论文网www.abclunwen.com)是实现最优信息基算法的理想计算工具,且具有性质优良的恢复函数。来源:AB03c303C论文网www.abclunwen.com

The main contents include: Some preliminary theory (introduction to Sobolev spaces and variational formulations for differential equations); finite element methods for one-dimensional elliptic problems; the construction methods for general finite elements; error estimates for interpolation operators and inverse inequalities for finite element spaces; a priori and a posteriori error estimates for the finite element method for high-dimensional elliptic problems; some typical spectral methods for partial differential equations; error analysis for the spectral approximation for some linear and nonlinear partial differential equations.

主要内容有:准备知识(Sobolev空间的基本概念和主要结果,微分方程的变分描述);一维椭圆型方程有限元方法;一般有限元的构造;插值算子误差估计和逆不等式;高维椭圆型方程的先验、后验误差估计;求解偏微分方程的几类谱方法;线性与非线性问题谱逼近的误差分析等。

The new methodof defining spline function will generalize the concept to the more universal Hilbert space. Hence, we take into consideration the interpolation spline function, general linear differential operater in semi- open interval and the Green function defined accordingly, and the reproducing kernel to produce the Green function and prove the existence of the reproducing kernel.

采用了一种新的样条函数的定义方法,把样条函数的概念推广到更一般的Hilbert空间上,再考虑半开闭区间a,+∞上的插值样条函数,一般线性微分算子及其定义的Green函数和再生核,构造出Green函数并且证明了再生核的存在性。

By means of estimates for three-dimensional discrete derivative Green's function , the theory of the interpolation operator of projection type and the technique of cancellation of elements, for several usual elements in the three-dimensional setting, including rectangular parallelepiped elements, tetrahedr.

借助三维离散导数Green函数的估计,投影型插值算子理论和单元合并技术,本文详细讨论了几种常用三维单元(包括长方体元,四面体元和三棱柱元)的有限元解梯度的最大模超逼近,均获得了高精度的超逼近结果。

In this algorithm, Harris corner detector is used to extract feature points, which gains sub pixel precision for features extraction. Then, a pseudo matching set is obtained by comparing local neighborhoods of features through intensity cross correlation method and these pseudo matches are divided into inliers and outliers using robust RANSAC algorithm.

此算法采用 Harris角检测算子进行特征点提取,使提取的精度达到了亚像素级,然后以特征点邻域灰度互相关法进行特征点匹配得到了初步的伪匹配集合,并运用稳健的RANSAC算法将伪匹配点集合划分为内点和外点,在内点域上运用 L M优化算法精确地估计出了图像间的点变换关系,最后采用颜色插值对交接处进行颜色过渡。

Advancing wavefields by the degenerate migrators is actually a linear interpolation between two splitstep terms in the wavenumber domain.

退化的Fourier偏移算子通过在两个分裂步项之间作波数域线性插值来实现波场延拓,每延拓一层需要比常规的SSF地震偏移方法多一次快速Fourier变换。

The proof of the well-posed property, stability and the LBB condition are very difficult to deal with.

对于混合元方法来说,插值算子在各向异性网格下的适定性,稳定性以及LBB条件等验证工作都有和大的难度。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。