查询词典 exterior approximation

Keywords: nonlinear approximation; neral network; learning algorithm

中文关键词：非线性逼近；神经网络；学习算法

Since RKPM is a kind of Galerkin meshfree methods, in this thesis, penaltyfunction method is employed to enforce the essential boundary conditions,trapezoidal rule is used for the approximation of displacement field function, Gaussand Hammer quadratures are applied for the numerical integration of systemequation,self-adapting method is applied for confirming the support of the pointinterpolated.

针对 RKPM 是一种伽辽金型的无网格方法，本论文采用罚函数法引入位移边界条件，用梯形积分法则近似位移场函数，对系统方程进行积分时分别使用了 Gauss 积分和 Hammer 积分，采用自适应的方法确定计算点的定义域。

We used different methods to calculate luminosity in order to assure its reliability. Structure function method is adopted to derive the radiatively corrected cross section whose accuracy is up to 1%. The corrections from vacuum polarization and effect of energy spread are also studied. The final analytical approximation formulaes of the observed cross sections are worked out. Different fitting methods are carried out to fit the resonances according to different requests.

模拟的分布图的仔细对比，并兼顾实验的要求，得到每种事例对应的选择条件，特别是在处理积分亮度时，更是采用了不同的方法，以保证亮度计算的可靠性；采用结构函数的方法推导出截面的辐射修正公式，精确度达到了1％的水平，研究了真空极化给拟合公式带来的修正，并考虑了束流能散的影响，计算出最终的观测截面的解析近似式；对于三个共振态的拟合，针对不同的要求，采用了不同的拟合方法；同时在M.C。

Under the first perturbation approximation, the contribution of the torso scatterings increases with higher frequency, with shorter distance between the source and head center, with lower elevation of the source, and with azimuth departing from the ear.

在一级微扰近似下，躯干散射对HRTF的影响整体上随频率的升高、或声源距离的减小、或仰角的降低、或声源相对受声耳方向的偏离角度的增大而增大。随着微扰级数的增加，高阶微扰项对计算结果的贡献迅速减少。

The results show that for SiO〓 and GeO〓 glasses, the Rayleigh scatterings arise mainly from the disorders of the densities of atoms, consistent with the assumption of the fictive temperature approximation which is the usual method used in the existing optical fiber theory to calculate Rayleigh scatterings in glasses.

计算结果表明：对SiO〓和GeO〓玻璃，现有光纤理论的瑞利散射处理方法——虚温度近似所作关于玻璃中瑞利散射主要来自玻璃的原子密度无序的假设能很好成立。

For the global priority and infinitely splittable cases,we show that starting from an empty configuration,the solution after any one round of best responses is of a constant-factor approximation.

本文分为以下三个方面：首先，我们考虑线性拥塞博弈，对总体加权延迟函数、用户延迟和函数、资源延迟和函数等三种系统目标函数，分别给出了稳定率的上界。

This is due to the elimination of bending effects in membrane approximation of the FEM model.

产生这种差别的主要原因是有限元模型中的薄膜假设，忽略了弯曲变形的影响，这种差别主要产生在成形初期。

After the linear pointing correction, the surveying region is divided into spherical Delaunay triangulations, and the whole smooth pointing correction surface is produced by using the high-accuracy generalized extended interpolation approximation method.

提出了一种新的基于广义延拓插值的射电望远镜指向误差修正模型，在线性修正模型的基础上对观测域进行球面的Delaunay三角剖分，利用高精度的广义延拓插值逼近方法生成不分项的整体分布曲面。

The 2D integral equations are computed by an integrated iteration algorithm of modified successive approximation method and Aitken acceleration technique.

采用改进型逐次逼近解法和Aitken加速技术相结合的迭代算法计算二维积分方程。

Based on the low frequency approximation of TIWL response in a homogeneous, transversely isotropic conductive medium, Zhdanov et al. derived the analytic formula to extract the conductivity of the anisotropic formation, the borehole dip angle and tool azimuth from the response of TIWL. These can be used as the foundation of TIWL data interpretation.

利用在横向各向同性均匀介质中测井响应的低频渐近式给出了由张量感应测井响应提取地层各向异性电导率和井孔倾角与方位角信息的解析公式，为张量感应测井资料解释奠定了基础。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。