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数值卷积
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  numerical convolution
     In addition,traditional numerical convolution is replaced by recursion algorithm in the computation of inhomogeneous items in the ordinary differential equations,such that the computational efficiency rises greatly.
     在计算常微分方程组中的非齐次项时 ,采用递归计算代替传统数值卷积大大提高了计算的效率 .
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  “数值卷积”译为未确定词的双语例句
     This paper present a fast convolution method to be used in fitting the γ spectrum of scintillation crystal PbWO 4 and gives the light yeildof the crystal.
     针对用低能的实验室γ源激发高能物理实验中采用的高密度 ,低光产额的闪烁晶体来测量其光产额时闪烁体的γ能谱不易拟合的问题 ,论文在原有的卷积拟合算法的基础上发展了一种解析方法 ,该方法通过用一解析函数来近似γ能谱中的康普顿本底形状 ,把原来耗时的数值卷积过程简化为一个递推级数的计算 .
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  相似匹配句对
     A Numerical Method for Convolution of Two Piecewise Functions
     两个分段函数卷积数值算法
短句来源
     Numerical Calculations of Convolution of Double-Parameter Weibull Distribution
     两参数Weibull分布卷积数值计算
短句来源
     The computational result is compared with G.
     数值结果和G.
短句来源
     (2) numerical simulation;
     数值模拟;
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     The Formula For the n-Fold Convolution
     n重卷积公式
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  numerical convolution
Further, the results from the unit source pulse case have been used for the analysis of multiple pulse case using the numerical convolution when the source condition is a random process.
      
Tostudy the behaviour of the method, the numerical convolution of afundamental solution with a unit step function is compared with theanalytical result.
      
Linear systems analysis, i.e., numerical convolution/deconvolution, and moment analysis have been performed on data obtained from microcapsules containing the ampicillin prodrug bacampicillin hydrochloride.
      
From the results, it is concluded that numerical convolution/deconvolution is a valuable tool for predicting bacampicillin bioavailability.
      
By using numerical convolution and deconvolution, the release rates in vivo and in vitro were shown to be similar when using water with 0.5% sodium lauryl sulfate as dissolution liquid.
      
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A non-local continuum model for strain-softening or damage of geo-materials withdefects is derived based on nonlinear geometry field theory. Plastic strain or damage is representedby a non-local voriable in the model. Variational equations, numerical convolved integrationalgorithm of the model are also presented The numerical simulations show that the model involvedwith the characteristic size, is able to analyze softening or damage of materials with defects as wellas the deformation localization of geo-technical...

A non-local continuum model for strain-softening or damage of geo-materials withdefects is derived based on nonlinear geometry field theory. Plastic strain or damage is representedby a non-local voriable in the model. Variational equations, numerical convolved integrationalgorithm of the model are also presented The numerical simulations show that the model involvedwith the characteristic size, is able to analyze softening or damage of materials with defects as wellas the deformation localization of geo-technical engineering excavation.

基于非线性几何场论,建立了含有天然缺陷的岩土材料非局部连续模型、变分方程及相应的实时更新拖带系大变形有限元数值模型,设计了这一模型的数值卷积算法。对工程材料特别是岩土工程的地下开挖进行的数值结果表明,非局部连续模型描述变形局部化问题是适当的,物性方程包含材料特征尺度对于带缺陷体材料应变软化和损伤的分析是必要的。

A non local continuum model for strain softening with plastic strain or damage variable taken as a nonlocal variable is derived by using the Stokes Chen additive decomposition principle of finite deformation gradient. At the same time, variational equations, their finite element formulations and numerical convolved integration algorithm of the model in current configuration usually called co moving coordinate system are given. Stability and convergence...

A non local continuum model for strain softening with plastic strain or damage variable taken as a nonlocal variable is derived by using the Stokes Chen additive decomposition principle of finite deformation gradient. At the same time, variational equations, their finite element formulations and numerical convolved integration algorithm of the model in current configuration usually called co moving coordinate system are given. Stability and convergence of the model are proven by means of the weak convergence theorem of generalized function and the convolved integration theory. Mathematical and physical properties of the characteristic size for material or structure are accounted for within the context of a statistical weigthted or kernel function, and the way how to determine the kernel function is investigated. Numerical simulations show that this model is rational to analyse problems with deformation localization.

基于非线性几何场论,建立了材料非局部连续模型、变分方程及相应的实时拖带系大变形有限元数值模型,设计了这一模型的数值卷积算法.由广义函数弱收敛定理和卷积理论,证明所提出的非局部连续模型具备收敛性和稳定性.并阐明了材料特征尺度数学物理意义,统计加权函数的选择原则.数值结果表明非局部模型描述变形局部化问题是适当的

This paper present a fast convolution method to be used in fitting the γ spectrum of scintillation crystal PbWO 4 and gives the light yeildof the crystal. It replaces the time costing convolution calculation with a seriesrecursion, which greatly improves the speed of fitting with little loss of preciseness.

针对用低能的实验室γ源激发高能物理实验中采用的高密度 ,低光产额的闪烁晶体来测量其光产额时闪烁体的γ能谱不易拟合的问题 ,论文在原有的卷积拟合算法的基础上发展了一种解析方法 ,该方法通过用一解析函数来近似γ能谱中的康普顿本底形状 ,把原来耗时的数值卷积过程简化为一个递推级数的计算 .该方法在不损失拟合精度的情况下大大提高了数据处理速度

 
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