查询词典 variance

The influence functions of the variance components or the ratio of the variance components on the state estimates of the Kalman filter are also deduced.

推导了方差分量估计对Kalman滤波解的影响。

Mode tangent angle variance ration of the cantilever plate in two directions is gotten from the the beam the mode slope variance ratio.

在梁结构的振型斜率变化率基础上，得到了板结构两个方向的振型切角变化率。

Genetic differentiation of between and within five eco-geographical groups of E. sibiricus is estimated by Shannon's diversity index, which shown that 68.17% genetic variance existed within group, and 31.83% genetic variance was among groups.

基于Shannon 多样性指数估算了5个老芒麦地理类群内和类群间的遗传分化，发现类群内遗传变异占总变异的68.17%，而类群间的遗传变异占总变异的31.83 %。

Genetic differentiation between and within five eco-geographical groups of Elymus nutans was estimated by Shannon's diversity index, which shown that 42.94% genetic variance existed within group, and 50.76% genetic variance was among groups.

基于Shannon 多样性指数估算了5个垂穗披碱草地理类群内和类群间的遗传分化，发现类群内遗传变异占总变异的42.94 %，而类群间的遗传变异占总变异的57.06 %。

The 54 accessions were classified into five major groups:Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ by cluster analysis using UPGMA, which showed significant relationship with the origin regions of accessions. Genetic differentiation between and within eight eco-geographical groups of C.dactylon was estimated by Shannon's diversity index, which showed that 63.81% genetic variance existed within group, and 36.19 % genetic variance was among groups, indicating rather large genetic distances among those germplasm, and there was a correlation between genetic differentiation and eco-geographical habits among the groups.

聚类分析结果表明，52份材料可聚为5类；基于Shannon多样性指数估算了8个狗牙根生态地理类群内和类群间的遗传分化，类群内的遗传变异占总变异的63.81%，类群间的遗传变异占总变异的36.19%，表明这些抗源材料遗传差异较大，各生态地理类群间的遗传分化与其所处的生态地理环境具有一定的相关性。

On the basis of Allan variance method, the Allan variance for zero drift signal of ring laser gyros is calcu- lated.

在介绍Allan方差方法的基础上，计算出了激光陀螺仪零偏测试数据的Allan方差。

Ten contamination features are extracted from the contaminated insulator infrared image,viz.the highest , the lowest , the mean temperature of the background, the temperature variance of the background ,the highest ,the lowest ,the mean temperature of the contaminated insulator discal surface , the temperature variance of the insulator discal surface ,the maximum and the mean temperature increase of the discal surface contrasting to the mean temperature of the background .

本文研究从分割后的污秽绝缘子盘面图像中提取了10维原始污秽特征，即：绝缘子红外热像背景的最高温度、最低温度、平均温度、背景温度分布的方差值、盘面图像的最高温度、最低温度、平均温度、盘面温度分布的方差值、盘面温度的最大温升、盘面温度的平均温升。

After studying analysis of variance on single factor and double factor,this paper reveals that if the difference between levels of the primes exist noteworthily is mainly depended on the sum of its experiment effects or variance of experiment effects and stochastic difference.

0引言 在试验设计时设置重复试验，能够估计试验误差；重复试验次数越多试验误差越低，试验精确度越高。一般认为，适宜重复次数应保证使误差项自由度至少为12，否则F检验或t检验的临界值上升很快，难以呈现显著性川。

In the practical side﹐we can demonstrate modified mean-variance utility approach outrightly prefer to the mean-variance approach

在传统均数-变数效用法下，由於IC设计具备高的投资风险，导致IC设计与加权股价常常落於无法判定的情况，故无法精确评估其绩效高低表现，因此我们认为这不是良好的绩效评估准则。

Therefore, it has the important scientific research value in studying the relationship between the changing of the parameters (including the temperature, the humidity, the grain radius and so on) and the electricity and radioactivity of the medium. Applied the count statistics and the numeral value analysis, the paper analyzes, concludes and contrasts the data sufficiently through the experimentation, and acquires the following results that the resistivity and the polarizability both have the negative relationship with the temperature variety of medium from 0℃ to 200 ℃. The parallactic poalarizability is consistent with the temperature variety in the plan as well as the section, but their trends are exactly opposite. Power supply voltage has no considerable influence to the resistivity and polarizability by using duality variance analysis, however, the detecting depth and the plan position influence them greatly. Different AB/2 interval that increases by degree does not influence variance and the average value of the resistivity and the polarizability remarkably. By using the least double multiplication, the relationship of temperature-time-the influence radius of the fire source is carried up by the mathematic drawing up. After discussing their correl ation, I educe the influence radius of the fire source and carry out the 'trend analysis and forecast to the spacial changing of the temperature and the parallactic polarizability in the end.

本文通过试验并应用数理统计和数值分析等相关理论对所得到的试验数据进行了分析、归纳和对比，得出了介质温度变化在0-200℃内视电阻率和视极化率与温度均表现为负相关性；视极化率与温度在剖面和平面上的变化形态具有很好的一致性，但变化趋势相反；由二元方差分析可得供电电压对视电阻率和视极化率无显著影响，但探测深度和平面位置对视电阻率和视极化率有显著影响；通过假设检验可证不同AB／2递增间隔，对视电阻率和视极化率的方差和平均数影响都无显著性差异；应用最小二乘法对温度——时间——火源影响半径之间的关系进行了数学拟合，讨论了它们之间的相互关系，得出了火源影响的有效半径，太原理工大学硕士研究生学位论文并对温度和视极化率的空间变化作了趋势分析和预测。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了