查询词典 moment matrix

The paper consists of three parts. First, we give the calculation for every order central moment for the Logistic population, mean vector and covariance matrix of the order statistic of random sample from the Logistic population, and means of several special functions for the order statistic of random sample from the Logistic population. Secondly, we discuss the parameter estimation for the Logistic population. Finally, we solve the question about the goodness-of -fit test for the Logistic population.

研究的主要内容分三部分：第一部分是关于Logistic总体各阶中心矩、样本次序统计量期望向量与协方差阵及若干个特殊的样本次序统计量函数期望的计算问题；第二部分是关于Logistic总体分布参数的估计问题；第三部分是关于Logistic总体的拟合优度检验问题。

This paper has also derived the unit stiffness matrix of bar element on which the moment of some nodes is over the elastic ultimate moment and discussed the convergent properties of computing method.

把水压机活动横梁假设成一交叉梁系，对其做了弹塑性有限元分析，导出了部分节点弯矩超过弹性极限时的梁单元刚度矩阵，讨论了计算方法的收敛性。

The elastic stiffness matrix of this new model is 14×14. The effect of axial force, shearing force, biaxial bending moment and bimoment was involved in the geometrical stiffness matrix of element.

该模型的弹性刚度矩阵为14×14矩阵，几何刚度矩阵中考虑了轴力、剪力、双向弯矩和双力矩效应。

The electromagnetic scattering problem is often treated with integral equation and moment of method, and the calculation of matrix element is one of the most important factors that affecting the accuracy and efficiency of method of moment.

电磁散射问题的数值解通常采用积分方程结合矩量法求解，而阻抗矩阵元素的计算是影响矩量法计算精度和效率的重要因素之一。

Inspired by image salient area detection model, A model for extracting local invariant feature is proposed based on salient measurement of local second moment matrix.

借鉴图像显著性区域的检测思想，提出一种基于局部二阶矩显著性估算的局部不变特征提取算法。

Based on the moment matrix and voltage feed, a new definition of eigen-driven model in moment method is proposed, or one element of the array fed with others short.

由矩量矩阵出发，采用电压源馈电模型，提出矩量法中关于本征激励模型的新定义：即阵列中一个单元激励，而其它单元均短路。

The results from different calculation solutions alsoshow that the precision of the instantaneous angular speed of the marine diesel enginebased on the flexible body model is mainly correlated to the rigidity matrix and theinertia of moment matrix of the equivalent model.

考虑不同阻尼大小的仿真计算表明：基于柔性体模型的柴油机瞬时转速计算精度主要与轴系当量系统的刚度和惯量有关。

Based on the gray level co-occurrence matrix, moment of inertia, entropy, angle second moment of laser speckle, the texture of images is analyzed.

介绍了激光散斑的形成及其统计性质，拍摄大量不同加工工艺、不同表面粗糙度标准样块的散斑图像，基于激光散斑图像的灰度共生矩阵及惯性矩、角二阶矩、熵、相关性4个参量，对图像进行了纹理分析。

The paper presents the formulation of the inverse kinematics of the 3-RSS/RU parallel mechanism and analyzes the direct solution. It deduces velocity Jacobian matrix. The moment transfer Jacobian matrix is obtained base on the principle of virtual work and simulated the input and output.

本论文首先推导了3-RSS/RU并联机器人的运动学反解方程，并对位置正解进行了分析，推导了速度雅可比矩阵，在此矩阵的基础上，利用虚功原理得到了力矩传递雅可比矩阵，对力矩的输入输出做出了仿真。

FMA decreases the computation complexity from O to O by decomposing the dense matrix in Moment Method into the combination form of four sparse matrix—Near interaction, Aggregation, Translation and Deaggregation matrix.

本文严格推导了二维和三维快速多极算法的各步骤，并根据其稀疏矩阵形式，讨论了该算法的计算量和存储量；提出了获得该算法众多参数选取规则的新途径，在理论上丰富和发展了该方法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。