查询词典 weighted function

A third order ENO finite volume method for hyperbolic conservation laws on unstructured triangular mesh is introduced.In order to obtain the third order accuracy on spatial discretization,a weighted quadratic interpolation is constructed on every triangular mesh.Two point Gauss quadrature formula is also used on each edge of every triangular mesh and the third order TVD Runge-Kutta method is used for time discretization.The numerical order of convergence and the numerical result of a mesh 3 wind tunnel with one step are given.

摘 要 基于双曲型守恒律方程，对非结构三角形网格给出了一种ENO(Essentially Nonoscillatory Scheme)型有限体积格式，方法的主要思想是先对每一个三角形单元构造一个加权的二次插值多项式，而在计算交界面的流通量时采用了两点高斯积分公式以保证格式的整体精度，时间离散采用三阶TVD Runge-Kutta方法。

Based on the platform of virtual instrument LabVIEW,this paper is to detect peaks of original signal respectively with power-weighted algorithm, Gaussian fitting algorithm, Gauss- polynomial fitting algorithm, a general polynomial fitting algorithm and Gaussian non-linear curve fitting algorithm, and compare their error means and standard deviations.

基于LabVIEW虚拟仪器开发平台，分析了功率加权算法、高斯拟合算法、高斯-多项式拟合算法、一般多项式拟合算法和高斯-非线性曲线拟合算法对原始信号寻峰，比较误差均值和标准偏差。

The weighted Moore-Penrose inverse is a special generalized inverse which is an important basic tool in many branches of mathematics and has extensive applications in other fields such as economics, information processing, automatic control, etc. Recently, the study of generalized inverse of matrices associating with more general algebra such as ring, semiring and so on generalize the theory and methods of generalized inverse deeply and characterize the structure of algebra as well.

加权Moore-Penrose逆是一种特殊的广义逆，它不仅是许多数学分支的基本工具，而且在经济学、信息处理、自动控制等其他领域有着广泛的应用，近年来，结合环、半环等更一般的代数系统的矩阵广义逆的研究，不仅将广义逆的理论和方法作了更加深入的推广，而且也成了刻画代数结构的有力工具。

A method is proposed for computing the balance parameter between entropy and the generalized weighted distance.

给出了联合熵和加权广义距离之间平衡参数的确定方法。

According to the general characteristic of systems' state assessment, this paper presented a method for assessing systems' state based on the generalized weighted distance between the values of evaluated systems' indices and their standard values.

针对系统状态评估的一般特点，基于评估对象各项指标和评估基准之间的广义权距离，提出了一种系统状态的评估方法。

According to randomness and fuzziness of anonymity, a fuzzy pattern recognition model is presented based on entropy and least generalized weighted distance, which makes the membership vector of anonymity grades have a desirable dispersive property.

鉴于匿名的随机性和模糊性特点，提出了基于联合熵和最小加权广义距离的模糊模式识别方法，实现了系统匿名等级隶属度向量的离散化。

Some formulas of the weighted Moore-Penrose generalized inverse of the sum of two matrices are given under two different kinds of conditions, related existing results are extend and modified with a sample and direct proof method.

在两种情形下，利用矩阵的加权Moore-Penrose逆导出了两矩阵和的加权Moore-Penrose逆的公式，其推导证明简洁而直接，文中还给出两矩阵可以同时加权奇异值分解的充要条件，指出了J.K。

In order to filter the data sampled from inner-contour generatrix of pipe figure measured by laser, a new effective weighted average recursive filter based on energy difference is proposed.

对基于激光测量的管形零件内轮廓母线采样数据进行滤波。提出了基于能量差的加权均值递归滤波算法。

By using the multi-year series of the circulation indices P and C for the closed pressure system on the unit radius spherical surface,three characteristic quantities of annual system centers(around the climatological center C-) are defined.1Average distance r,which is defined as the weighted geometric average distance of the annual system centers C deviating from the climatological center C-(i.e.the center location anomaly C′),is a measurement for distribution area of the system...

用单位半径球面上闭合气压系统环流指数P、C的多年序列，构造了历年系统中心在C-周围分布的3个特征量：1平均距离r，它定义为历年系统中心C偏离于气候中心C-的权重几何平均距离，是系统中心分布区域大小的度量；2压缩系数μ，它描述了历年系统中心分布区域偏离于圆形的程度，是历年系统中心位置分布各向异性的度量；3极大异常方向β，它用系统中心极大异常偏离-C处正东方向的角度，给出了系统中心的主要异常方向。

Composite desirability is the weighted geometric mean of the individual desirabilities for the responses.

复合满足度是各个响应变量满足度的几何加权平均值。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。