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bubble函数
相关语句
  bubble function
     A stabilized finite element method is presented embedded with local bubble function based on the classical mixed formulation of the shell problem with free edge boundary conditions.
     针对自由边界条件壳体问题的经典混合变分模型发展局部bubble函数稳定化有限元逼近方法:逐单元附加带嵌入bubble函数的局部双线性型的稳定化法.
短句来源
     This paper construct wavelets based on Bubble function and decompose seismic signals by using Mallat algorithm. According to the theory of position extreme value, events and faults are detected.
     本文基于Bubble函数构造小波基 ,用Mallat塔式快速算法对地震信号进行二维多分辨分析 ,并利用局部极值理论提取、检测反射同相轴及断层。
短句来源
     To obey the rule of accuracy enhancement of combined hybrid method, stress modes which fit the completely energy compatible condition with bubble function are developed. Thus 5 new quadrilateral elements based on combined hybrid principle are obtained: CHDB1, CHD1, CHDB2, CHD2, CHD01.Compared with elements based on modified principle and interpolate rotation degrees of freedom independently, the five new elements use less variable and simpler in calculation.
     根据组合杂交方法精度增强的要求,推导出与bubble函数完全能量协调的应力模式,从而得到五种基于组合杂交变分原理的新型四边形单元:CHDB1、CHD1、CHDB2、CHD2和CHD01单元。 和基于修正变分原理、独立插值转角自由度的其它有限元格式相比较,由于引入的场变量少,本文构造的系列单元计算相对简单。
短句来源
     Lateral inhibition described by Bubble function is a very common mechanism in living creature vision information processing system.
     侧抑制是生物视觉信息处理中广泛存在的一种机制,Bubble函数很好刻画了侧抑制现象。
短句来源
     In this paper,edge-detect by Bubble function passed zero edge-detect method is studied.
     由于传统的边缘检测算子如梯度算子、拉普拉斯算子、Sobel算子等对噪声敏感,采用了Bubble函数过零点检测来提取焊缝图像边缘的小波多尺度方法。
短句来源
更多       
  bubble functions
     For the Stokes problem, this paper establishes an equivalence among the bubble functions based stabilized finite element methods given by , GaLS stabilized methods and bubble functions enriching methods.
     本文针对Stokes-问题给出了[12]发展的基于局部bubble-函数稳定化有限元法与Gals-稳定化有限元法,bubble函数扩充元法的等价关系
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  “bubble函数”译为未确定词的双语例句
     Multiscale Fault Detection Based on Bubble Wavelet
     基于Bubble函数多分辨断层检测
短句来源
     Different kinds of bubble are presented to enrich the displacement interpolation function.
     本文使用不同类型的bubble函数来丰富位移插值;
短句来源
     The combined hybrid scheme without energy error leads to enhancement of accuracy at coarse meshes.
     能量误差为零的组合杂交格式可以得到改进的粗网格精度,而其中起关键作用的两个因素是:能量协调bubble函数和组合参数α(0<α<1)的选择。
短句来源
     Because of completely energy compatible, it is more convenient to adjust the energy of these elements.
     因为应力模式和bubble函数完全能量协调,这些单元的能量调节极为方便。
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  bubble function
Convergence of simplified and stabilized mixed element formats based on bubble function for the stokes problem
      
Two simplified and stabilized mixed element formats for the Stokes problem are derived by bubble function, and their convergence, i.
      
Motivated by this discovery, a new SDFEM is developed based on a special choice of the stabilization bubble function.
      
It is found that, irrespective of the degree of mean and the rotational pressure interpolation, the linear triangle mesh, with or without central bubble function (incompatible mode), locks when both the constraints are enforced simultaneously.
      
In order to satisfy the inf-sup condition we need to add to the usual piecewise quadratics a cubic bubble function.
      
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  bubble functions
We prove that for the new formulation one can use any stable mixed finite element for the Navier-Stokes equations with no-slip boundary condition provided suitable bubble functions on the boundary are added to the velocity space.
      
We apply a mixed finite element approximation to the interface operator by iso triangular elements and prove the optimal error estimates in the presence of stabilizing bubble functions.
      
Then we propose an asymptotically optimal compression technique for the related stiffness matrix (in the absence of bubble functions) providing a sparse factorized approximation to the Schur complement.
      
In the presence of bubble functions, our method has the complexity arithmetical operations.
      
The lower error bound is obtained by means of bubble functions and the corresponding anisotropic inverse inequalities.
      
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Lateral inhibition described by Bubble function is a very common mechanism in living creature vision information processing system.In this paper,we use Bubble function as wavelet base and Gaussian function as smooth function to decompose signal using Mallat algorithm and the position of maximum decomposition value is just the position of edges.This algorithm has different ability to reduce noise and to extract edges according to different scales of Bubble function.When the scale of Bubble function is growing...

Lateral inhibition described by Bubble function is a very common mechanism in living creature vision information processing system.In this paper,we use Bubble function as wavelet base and Gaussian function as smooth function to decompose signal using Mallat algorithm and the position of maximum decomposition value is just the position of edges.This algorithm has different ability to reduce noise and to extract edges according to different scales of Bubble function.When the scale of Bubble function is growing wide,then the ability of reducing noise increases and the ability of extracting detail edges decreases;otherwise,the ability of reducing noise decreases and the ability of extracting detail edge increases. Both the theory and experiment manifest that this algorithm is very efficient and practical.

侧抑制是生物视觉信息处理中广泛存在的一种机制,Bubble函数很好刻画了侧抑制现象。本文利用Bubble函数构成小波,高斯函数作为平滑函数,用Mallat快速算法进行小波分解,分解的局部极大值就是多尺度边缘,理论和实验都表明,这种算法对于不同的尺度,有不同的抑制噪声的能力和提取边缘细节的能力,当Bubble函数的尺度较大时,抑制噪声的能力增强,提取边缘细节的能力变差;当Bubble函数的尺度较小时,抑制噪声的能力变弱,提取边缘细节的能力增强

According to the equivalent expression theorem about the orthogonality of wavelets and the equivalent expression theorem about the Riesz bounds of integral shifting basis of a function in L2(R),the orthogonality condition of Bubble wavelets is analysed and discussed systematically from three respects.The results show that the orthogonal and almost orthogonal Bubble wavelet can be constructed by selecting appropriately the shape parameter of Bubble functions,but the Mexicanhat wavelet (a special Bubble wavelet) can not be regarded as an almost orthogonal wavelets....

According to the equivalent expression theorem about the orthogonality of wavelets and the equivalent expression theorem about the Riesz bounds of integral shifting basis of a function in L2(R),the orthogonality condition of Bubble wavelets is analysed and discussed systematically from three respects.The results show that the orthogonal and almost orthogonal Bubble wavelet can be constructed by selecting appropriately the shape parameter of Bubble functions,but the Mexicanhat wavelet (a special Bubble wavelet) can not be regarded as an almost orthogonal wavelets.

根据小波正交性的等价叙述定理和L2(R)中函数整数平移系的Riesz界等价叙述定理,从三个方面系统地分析讨论Bubble小波的正交条件。适当选择Bubble函数的形状参数,可以得到正交和几乎正交的Bubble小波,并指出墨西哥帽函数不能当成几乎正交的小波函数使用。

This paper is devoted to the development of stabilized finite element methods by empolying local bubble functions for adveetive-diffusive models which has the form σu+a·(?)u-k△u =f. We show this methodology is stable independent of σ or Peclet-number and its globle optimal convergence order,from the problem with a=0 or σ=0.

本文针对形如σu+α·u-kΔu=f对流—扩散型的模型问题,发展耦合局部bubble-函数的有限元方法,我们就α=0和σ=0两种情形证明了方法的与“影响因素”σ和pedlet-数无关稳定性及全局最佳收敛阶。

 
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