查询词典 variance analysis

In order to reduce calculation error, the frequency distribution of average values is used to compute the mixed distribution's digital features of each component distribution, thereinto, the number of the component distribution is determined by AIC, choose the number that meets the minimum value of AIC as the component number of mixed distribution, and the other parameters are estimated by EM algorithm; Secondly, because each component distribution is corresponding to a kind of major gene genotype, according to the values of the average and variance of the each component distribution, we can use the limit error of the normal distribution to plot each individual into the correspondent component distribution, namely into correspondent major gene genotype. Then we regard each major gene genotype as a treatment level of one-way analysis of variances, and the one-way multivariate analysis of variance is carried out to calculate the covariance matrix of major gene effect, covariance matrix of polygene effect, covariance matrix of environment effect and so on; At last, combining the weights of the each component distribution of mixed distribution, we can calculate the variance of major gene effect, the variance of polygene effect, environmental variance and the genetic gain of the quantitative trait.

为减小计算误差，本研究采用均值的频数分布来计算各成分分布的数字特征，其中成分分布个数根据AIC准则，选择使AIC值达到最小的成分分布个数作为混合分布的成分分布数，分布中其它参数的确定利用EM算法来估计；其次，每个成分分布对应一种主基因基因型，根据各个成分分布的均值和方差，利用正态分布的极限误差将每个个体划分到相应的成分分布中，即相应的主基因基因型中，将每种主基因型作为单因素方差分析的一个处理水平，对其进行单因素的多元方差分析，分别计算主基因效应协方差阵、多基因效应协方差阵、环境协方差阵等参数；最后结合混合分布中各成分分布的权重即各主基因基因型的分离比例，计算主基因效应方差，多基因效应方差和环境方差，以及遗传力等参数，进而计算该数量性状的遗传进展。

The measurement system error model analysis is introduced into power system real time network state analysis as an important part for the first time, which can improve on the state estimation quality and provide the capability to monitor the operation of the measurement system; 2. The theory and algorithm of the on-line estimation and update of measurement noise variance based on the relation between the residual variance and noise variance. The statistic properties of the sample variance are discussed and the relation between the estimation precision and sample size under given confidence level is derived; 3. The theory and algorithm of detection and identification of measurement bias are presented, which is based on the relation between residual mean and noise mean. The statistic properties of sample mean are discussed and the relation between estimation precision and sample size is derived; 4. The Givens orthogonal transformation algorithm is selected to be the essential algorithm of state estimation, the fast orthogonal transformation algorithm with damp factor and the algorithm which can handle the zero injection measurements efficiently are presented; 5. The quantity analysis theory of bad data detectivity and identifibility are presented, which describes the relation between the elements in matrix W〓 and bad data amplitude and can provide the theory base for measurement system design and valuation.

一、首次将量测系统误差模型分析做为一个环节引入电力系统实时网络状态分析中，为EMS系统增加了实时监视系统运行、修正量测系统误差模型的新功能，进一步发挥了实时网络状态分析应用软件的潜力；二、首次提出了应用样本方差在线估计与修正量测系统误差方差的基本理论，讨论了样本方差的统计性质和概率分布，推导出了样本容量、估计精度和置信度之间的关系，给出了在线估计与修正量测系统误差方差的算法；三、首次提出了应用样本均值在线检测与辨识量测偏差的基本理论，讨论了样本均值的统计性质，推导了样本容量、估计精度和置信度之间的基本关系，给出了在线检测与辨识量测偏差的算法；四、在状态估计算法设计中，以Givens变换算法做为基本算法，提出了快速正交变换阻尼因子法和可以有效地处理零注入量测的混合法，并对实时应用中的一些问题进行了讨论；五、提出了不良数据可检测性与可辨识性的定量分析理论，揭示了描述量测系统配置、网络结构与参数的残差灵敏度矩阵中的元素与不良数据的幅值在可检测、可辨识能力上的定量关系，为量测系统配置设计与评价提供了理论基础；六、综合国内外最新研究成果，采用自适应自回归预测技术和稀疏矢量技术，构造了较完善的不良数据检测与辨识算法。

PAO can be obtained by mixing two kinds of olefines which have different average carbon in proportion with variance analysis.

充分了解到裂解烯烃的平均碳数分布对产品的粘度指数和凝点的显著性影响。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数量差异不显著。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数童差异不显著。

According to the operation performance of adsorption chillers, optimizes the parallel operation mode of two adsorption chillers by means of variance analysis.

根据吸附式制冷机组的运行特性，利用方差分析的方法，对两台吸附式制冷机组的并联运行模式进行了优化。

Methods According to the BPC reference method recommended by International Council for Standardization in Haematology, we enumerated platelets in the processed whole blood sample and calculated the uncertainty in this process by method of variance analysis. We use the evaluation methods of measurement uncertainty according to ISO guideline Expression of Uncertainty in Measurement.

参照国际血液学标准化委员会推荐的BPC参考方法计数处理过的全血标本中的血小板，并利用相关实验数据和文献资料，按照国际标准化组织《测量不确定度表述指南》文件中有关测量不确定度的评估方法，采用方差分析法，计算BPC过程中的不确定度。

The variance analysis showed F=10.921, P.01. Then, the best linear regression equation about wool yield of Angora rabbit at 110 days old was established.

经方差分析，F=10.921，P.01，并建立了长毛兔110日龄产毛量的最优回归方程。

Human body ; body surface area ; calculating model ; variance analysis ; basal metabolism

人体；体表面积；计算模型；方差分析；基础代谢

The T test and variance analysis of the results show that throughout the stage of primary school, whether Mongolian or Han, whether in Cities or in the courntry, peer contacts of opposite sex are much less frequent than those of the same se...

结果表明，整个小学阶段，蒙汉、城乡儿童，异性同伴相互交往的程度远远低于同性伙伴相互交往的程度，异性同学之间缺乏足够的交往；异性同学相互交往的程度，存在着明显的年级差异，但不存在民族差异和地区差异。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。