查询词典 variance ratio

Then, the results were evaluated by repeated measurement of variance analysis and multivariate analysis of variance.

本研究对符合入选标准的CTH患者进行常规止痛治疗，并联合黛力新进行对比研究，通过对患者治疗前后不同时间点汉密尔顿焦虑(Hamilton Rating Scale for Anxiety，HAM A)和汉密尔顿抑郁(Hamilton Rating Scale for Depression，HAMD)量表评分进行重复测量方差分析和多元方差分析，旨在评估联合黛力新改善患者焦虑和抑郁指数的效果。

Course contents include the analysis of variance and covariance, multivariate analysis of variance and covariance, principle component, factor analysis, cluster analysis, discriminant analysis, canonical correlation analysis, multidimensional scaling, discrete choice model, and LISREL.

其主要内容包括变异数与共变异数分析、多变量变异数分析、主成份分析、因素分析、集群分析、区别分析、规则相关分析、多元尺度法、二元质量选择模型、及 LISREL 模型。

Our method is different from the conventional ones in that it combines the information of mean model and the inrormation of variance model. and PICa put suitable weights on mean and variance variable penalty.

与经典方法不同的是，该准则同时考虑了均值模型和方差模型中的信息，并对不同模型中的变量施以恰当的惩罚力度，达到了同时选择变量的效果。

Firstly, we analyze and compare three evaluation models: based on the stress function, based on the residual variance and based on DY-DX representation. An evaluation model based on the variance of distance ratios is proposed.

首先，分析和比较了基于应力函数的评价模型、基于剩余方差的评价模型和基于DY-DX表示法的评价模型，提出了一种基于距离比例方差的评价模型。

Moreover, it is discussed how to use the stress function, the residual variance and the variance of distance ratios to select the neighborhood parameter and the dimension of the low dimensional space.

同时还讨论了如何利用应力函数、剩余方差和距离比例方差来确定邻域参数和低维空间的维数。

Results the parameter estimates and it's stability of linear regression models is associated with the variation of explanatory variable between and within level 2units,and the relationship of parameter estimates and it's stability between linear regression models and variance component model is associated with level 2 residual variance or intatra-unit correlation.

结果 线性回归模型参数估计以及估计的稳定性与自变量在水平2单位间和水平2单位内的变异大小有关，线性因归模型与方差成分模型参数估计及其稳定性的关系与水平2残差方差或单位内相关系数大小有关。

Another advantage of these improved methods is the flexibility of rendering multiple volume data sets. There is detailed analysis and experimental proof of this flexibility. Besides, since the sample variance can reflect sample value distribution, an enhancement algorithm based on variance statistic is proposed.

另外，本文根据样本距统计量能够反映样本数据值分布的特点，提出基于方差统计的增强算法，绘制结果能够突出显示局部方差统计值较大，即结构分布较复杂的区域。

Although the asymptotic normality of pseudo-likelihood estimates has been proved (Gidas, 1993), the difference between the proposed asymptotic variance and the sample variance is still huge in binary Markov random fields.

虽然最大伪概似函数估计量的近似常态分布已被证明(Gidas， 1993)，但其近似理论上的变异数与样本变异数在二元随机域之下仍存在著相当的差异。

The SPSS program was performed to test normality of the dataset, variance homogeneity between the groups, coefficients of variation and analysis of variance.

对全部杂交信号点的Cy3和Cy5背景信号值，用SPSS软件进行数据转换、正态性检验、方差齐性检验、变异系数分析和重复数据的方差分析。

The results from an example showed that the unbiased estimate of error variance could be obtained so that polygenic variance and polygenic heritability could not be underestimated. Moreover, the AIC values by using the average of two replications were less than that by using the observations of a replication.

在试验设计为重复内分组随机区组设计时，通过甘蓝型油菜初花期的遗传分析表明：这种方案的试验误差方差估计值无偏性好，可避免多基因方差和多基因遗传率被低估；重复观测值平均数的分离分析的AIC值低于利用单一重复资料的AIC值。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。