The distinction between covariance and contravariance is important for computations with tensors, which often have mixed variance.
协变和逆变的区别对于张量的计算尤为重要，这往往会出现混合方差。
They will be mixed on application to give a subtle variance in tone.
他们的将被混合在一起产生微妙的变化。
Objective To relax assumption of carryover effects in analysis of variance for cross-over designs and explore mixed effects model.
目的放宽交叉设计方差分析对残留效应假定和探讨交叉设计混合效应分析模型。
Linear model is a vital class of statistical model which involves regression model, variance analysis model, covariance analysis model and mixed model etc.
线性模型是一类很重要的统计模型，它包括回归模型、方差分析模型、协方差分析模型以及混合模型等。
Methods We applied generalized linear mixed models for the nuclear family data to set up the genetic variance component model and estimated parameters using MCMC.
将广义线性混合模型应用于核心家系资料建立遗传方差分量模型，运用MCMC方法进行参数估计。
The variance of the shape and size with concentration for the mixed micelles of cationic anionic surfactants at high concentration has been studied.
本文研究高浓度区正、负离子表面活性剂混合胶团的形状及大小随浓度的变化规律。
Method: Make use of mixed effects linear model and single effect analysis of variance to deal with the repeated measure data.
方法：用混合效应线性模型和单因素方差分析处理重复测量资料并比较。
Taking the He-Ar mixed gas as protected atmosphere, TIG welding process parameters for AZ31 magnesium alloy plates was optimized by using the method of the orthogonal experiment and variance analysis.
以氦-氩混合气体为保护气氛，采用正交试验和方差分析的方法，对AZ31镁合金板材进行了TIG焊工艺参数的优化。
Spectral decomposition estimators of variance component matrix in mixed linear model are generalized to multivariate mixed linear model.
考虑含有两个方差分量矩阵的多元混合模型，将一元混合模型下的谱分解估计推广到多元模型下。
In this paper, the covariance matrix of random effect in linear mixed model is extended to positive matrix. We construct the estimation of variance components based on the idea of ANOVA estimation.
将线性混合模型中随机效应的协方差阵推广为正定阵，运用方差分析估计的方法给出了方差分量的估计。
Compared with the mixed linear model analysis, the analysis of variance could result in higher type I or II statistical error rates.
相对线性混合模型分析法，方差分析法分析该试验时，依测验的效应不同会导致第一类或第二类统计错误率的增大。
We compare the spectral decomposition estimate by the analysis of variance estimate in the linear mixed model with two variance components.
对含两个方差分量的一般线性混合模型，我们给出其方差分量的改进估计，主要对组合谱分解估计进行改进。
We compare the spectral decomposition estimate by the analysis of variance estimate in the linear mixed model with two variance components.
对含两个方差分量的一般线性混合模型，我们给出其方差分量的改进估计，主要对组合谱分解估计进行改进。
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