查询词典 interpolation function

Some methods have been used to overcome the local extremum of MI function, such as use high-order interpolation, decrease gray level, use Median filter.

许多学者对此做了大量研究，提出了诸如高阶插值法、减少灰度级数、中值滤波等解决方法。

As we know,Newton's interpolation polynomial is based on divided differences which can be calculated recursively by the divided-difference scheme while Thiele's interpolating continued fractions are grared towards determining a rational function which can also be calculated recursively by so-called inverse differences.

大家都知道，牛顿的插值多项式是基于均差的，可以递归出均差，而Thiele插值连分式是一个有理插值，也可以递归地计算，即所谓的逆。

The contents of this course include: the mathematical basis of FEM, the generic solution principles and expressions of elastic mechanics issue, the construction of element and its interpolation function, iso-parametric element and numerical integral, solution of linear equations, some practical issues of FEM modeling, brief introduction to typical commercial FEM packages, FEM for truss, plate blending and shell, and FEM for heat exchange and dynamics.

课程内容主要包括：有限单元法的数学基础、弹性力学问题有限单元法的一般原理和表达格式、单元和插值函数的构造、等参单元和数值积分、线性方程组解法、有限元建模的若干实际问题、典型商用有限元分析软件简介、杆件结构力学问题的有限单元法、平板弯曲问题的有限单元法、一般壳体问题的有限单元法、热传导问题的有限单元法、动力学问题的有限单元法等。

Firstly, it generated the GDP per person of county region in Anhui Province, relative growth rate and local SAM thematic map using the interpolation and overlay visualization function of GIS in order to analyze and demonstrate the huge differen...

首先利用GIS相关软件的插值和叠加显示功能生成安徽省县域人均GDP、相对增长速度和局域空间自相关专题图形，分析显示安徽省县域经济存在的巨大差异。

With 0~20mm layer of soil organic matter,, total N, available P, available K and pH value, such as soil nutrient content of the data base, the use of ArcGIS 9.0 and the Kriging interpolation grid overlay function, with statistics Methods, drawing a map Shucheng County soil nutrient level. Soil available nutrient was classified into four grades.

以安徽舒城县为例，以0~20mm土壤层的有机质、速效钾、速效磷、PH值等土壤养分含量为数据基础，利用ArcGIS 9.0的Kriging插值和栅格叠加功能，结合地统计学方法，绘制出了舒城县土壤养分等级图。

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。

It is concluded from patch test that the order of interpolation function for pressure must be higher than that of displacement of solid phase.

通过考察系统方程，由分片试验得知压力插值函数的阶必须低于固体相位移插值函数的阶，进而提出了一种系统方程的迭代求解方法。

We constructed a finite volume scheme of fifth order Hermite type with high accuracy for twopoint boundary value problems, choosing trial and test spaces as the fifthorder finite element space of Hermite type and the piecewise linear function space respectively. We didn't use higher derivatives as interpolation conditions, which is the same as the thirdorder finite element of Hermite type, but the scheme obtained had higher accuracy.

构造求解两点边值问题的一种Hermite型五次元高精度有限体积法，其中试探函数空间取Hermite型五次有限元空间，与Hermite型三次元相同，未引入更高阶导数作为插值条件，检验函数空间取分段线性函数空间，这样构造的格式求解精度更高。

This is a basic point, The mass conservative interpolation function is deduced in this thesis and the method to solve the stream surface expression from the partial differential equation of flow field is proposed.

本文首先推导了正确的基于质量守恒的单元插值函数，并提出从流场的偏微分方程直接求解流面方程的方法。

In view of the principle of pointbypoint comparison method, the foundation deciding whether the middle point interpolation is the control step error of NC system has been advanced, the math mould of inserting and compensation method established and the function that judges error by interpolating method has been improved.

基于逐点比较法原理，提出中点插补算法作为数控系统控制步进的偏差判别依据，建立了插补算法的数学模型，对插补算法偏差判别函数进行了改进和完善。实例分析结果表明，中点插补算法使插补精度由原来的小于等于一个脉冲当量提高到小于等于 0 。5个脉冲当量，插补点大幅度地下降，系统的响应速度加快和插补精度提高

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。