查询词典 singular bivariate normal distribution

Introduce the generalized Vandermonde matrix, and based on it, set up a representative form and the existence criterion of bivariate osculatory rational interpolation.

介绍了广义Vandermonde矩阵的定义，利用广义Vandermonde矩阵，给出了二元切触有理插值的一种表现形式，并给出了二元切触有理插值的存在性证明。

To determine the breakpoints with permanent structural changes, instead of choosing any convenient break date, I employ Perron and Qu (2006) framework by estimating some bivariate VARs for housing prices and some relevant housing variables.

此外， 将 Markov-switching 特性融入房屋价格成长率波动，来观察此模型是否能反映美国景气循环。

Basing on the coordinating equations of multivariate spline space, we firstly study the smooth connection problem of the bivariate quadratic polynomial spline functions which defined on the polygonal region with one interior net

最后说明了在一种类1—型三角剖分上二元二次样条函数s∈S_2~1的存在性及在其上曲面光滑连接的可行性。

With the help of bivariate entropy function, another programming is obtained and It's then proved that the solution of primal problem can be approximately obtained by solving a series of such programming.

这篇文章的求解是基于最大团问题的一个超方体约束下的二次规划模型，首先用二元熵函数作辅助项得到另外一个优化模型。

Based on these and absorption of the foreign company performance results, the thesis combines the theory and the method to analyze the performance of electronic component manufacturing industry enterprises. Based on the analyzing system enterprise performance system in and abroad, the paper raises innovational achievement indexes and evolutional indexes of company performance as to the default of the electronic component manufacturing industry. The paper builds the hierachical clusteing method and bivariate correlations to choose the best evolutional indexes of company performance in order to avoid multicolinearity. The paper proposes the synthetic evaluating method principal component analysis with weighted variable by analytical process. Then, the paper applies the method to analyze the performance of 28 companies of electronic component manufacturing industry.

基于此，在消化吸收国外有关企业绩效评价方面的成果的基础上，针对企业绩效评价的缺陷，本文提出了企业绩效评价的成长性指标和价值性指标；针对改进的AHP与PCA，本文提出了改进的AHP加权主成分分析方法；由于指标之间可能存在着多重共线性，本文运用系统聚类分析与相关分析对企业绩效的成长性指标与价值性指标进行选取；运用改进的AHP加权主成分分析方法与因子分析对电子元器件制造业的28家上市公司进行实证分析，并验证本文提出的综合评价方法的优越性；本文运用灰色模糊评价方法对28家上市公司绩效的非财务指标进行评价；最后，给出相关的结论与建议。

In this paper,we construct a simultaneous bivariate probit modelto correct the sample selection bias.

本文构建一个测度贷款违约概率的联立双变量Probit模型，对样本选择偏差问题进行纠正。

3Record the electroencephalogram of the SD rat dynamically.We use extracellular microelectrode to recorde the epileptiform burst in the CA3 area of the hippocampus in TLE rat slices. We use t-test, bivariate correlate evaluation and partial correlate evaluation to analyse the relationship between hippocampal plasticity and epileptogenesis of the temporal lobe epilepsy.

观察大鼠脑电的变化，并在颞叶癫痫模型大鼠离体海马脑片上记录自发性癫痫样电活动，应用t检验、Bivariate相关分析及Partial相关分析从多方面来了解海马可塑性改变与颞叶癫痫发生的相关性。

In this paper, thereare four sections. In the first section, we introduce the basic theory. Inthe second section, we give out the recent main results of multivariateLagrange interpolation. In the third section, we get some theories ofno posed set of nodes from a kind of recursive method of constructingposed set of nodes for bivariate Lagrange interpolation, and we get akind of abnormal posed set of nodes for interpolation form the reversethought of that theory.

本文共分为四章，第一章介绍了有关多元插值的基本理论和方法，第二章讲述了有关多元Lagrange插值和多元切触插值的近期主要结果，第三章我们从有关适定结点组的添加曲线法考虑，得到了一些有关Lagrange插值不适定的结论，并从该结论的反方向思考，得到了一种非常规型插值适定结点组。

Has only one nonconstant regressor x, it is called a simple linear regression model, or two-variables regression model, or bivariate linear regression model.

等式y = b0 + b1x + u只有一个非常数回归元。我们称之为简单线性回归模型，两变量回归模型或双变量线性回归模型。

For arbitrary triangular control meshes, a surface algorithm based-on bivariate box-spline is developed.

提出一种以任意三角剖分为控制网格的二元箱样条曲面算法。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。