查询词典 variance analysis

These above problems, which are very important and valuable in agricultural crops area monitoring, are currently less researched. Hence, in this paper, seven types of common texture and five vegetation indices were respectively added into TM multispectral bands to classify using three different methods, which are Minimum Distance, Maximum Likelihood and Support Vector Machine, and analyze the effect on winter wheat identification accuracy by comparing the classification results. The contexture include Mean, Variance, Homogeneity, Contrast, Dissimilarity, Entropy, Variance, Angular Second Moment and Correlation, and the vegetation indices are RVI, SAVI, RDVI, NDWI and SLAVI.

为此，该文将平均值、方差、均一性、反差、相异性、熵、角二阶矩、灰度相关7种纹理信息以及比值植被指数、土壤调整植被指数、重归一化植被指数、植被液态水含量指数、有效叶面积植被指数5种植被指数信息分别加入到TM多光谱数据中，同时还进行了最佳波段选择，利用最小距离、最大似然和支持向量机3种方法进行分类提取小麦，研究了不同特征信息对小麦测量精度的影响。

Most of them rely on the central limit theorem, that states that the mean of N independent realizations of a random variable with mean u and variance d^2 approaches a normal distribution with mean u and variance d^2/N .

在蒙特卡罗评估框架内大量的各种选择性算法已经被推出，他们中的大部分依赖于中心极限定理，一个均值为U方差为D^2的随机变量的N次独立实现的平均值接近于一个均值为U方差为D^2/N的正态分布。

The results of AMOVA indicated that the variance component of among populations contributes 51.53% to the total genetic variance.

基于Nei (1972)遗传距离的UPGMA聚类分析显示群体间的遗传距离与群体的地理距离关系一致。

According to the number one of principal component(percent of variance 69.11%),The ranking among them was Liriodendron tulipifera variance range 0.7156

本论文对鹅掌楸、北美鹅掌楸和杂交鹅掌楸花被片色素及花果数量性状进行了初步研究，比较三大类群的差异，探讨它们的遗传变异规律，为进一步开展鹅掌楸杂交育种服务。

In the mixed linear model with two variance components, two positive estimates of variance component are proposed, which are dominate the ANOVA estimate and the Tatsuya estimate in the sense of mean-squared errors.

对含有两个方差分量的线性混合模型，本文给出了两个正的截尾估计，并指出它们在均方误差意义下优于ANOVA估计和Tatsuya估计。

It is also found that both permanent and transitory components of the conditional variance really exist and the shock of the temporary component of conditional variance is larger than the permanent component. Because there is no limit up or down in ADR's secondary market, the temporary shock of stock return is larger than the permanent shock.

而在条件变的部分，确实存在恒常要素与短暂要素，而且短暂要素的冲击效果明显大於恒常要素，显然在没有涨跌停限制的ADR次级交市场中，一旦面市场资讯的冲击时，短期股价报酬之反映较长期得剧。

The dissertation turns out the software of Helmert variance component estimation and applied it into Sutong Bridge GPS control network adjustment. The control points coordinate precision are increased, it shows that Helmert variance component estimation is valuable to GPS control network adjustment in practice.

本文完成了Helmert方差分量估计软件的研制，并把该估计方法成功应用于苏通大桥GPS控制网平差处理中，经过验后估计的网点坐标精度得到提高，说明了赫尔默特方差分量估计在GPS网平差中的实用价值。

Under the concave transaction costs function, using the variance of profolio return rate to express profolio risk, and taking the risk-return combination difference as the objective function, we propose Mean-variance D.C- integer optimization model under concave transaction costs and minimal transaction unit constraints.

2考虑凹交易费用函数，用投资组合收益率的方差反映组合风险，以风险-收益的组合差作为目标函数，提出了考虑交易费用及最小交易量的均值—方差D.C-整数优化模型。

It is shown that including current trading volume in the conditional variance equation of EGARCH model dramatically reduces the persistence of the conditional variance, meaning that the current trading volume is a good proxy variab...

在EGARCH模型条件方差方程中加入当前交易量可以显著降低条件方差波动的持续性，表明当前交易量可以代表引起收益率 ARCH效应的新信息。

It is also found that the conditional variance and jump frequency are time varying. Furthermore, both permanent and transitory components of the conditional variance really exist in the whole sample period.

此外，各国股价指报酬的条件变、跳跃强都是随时间而变动的，并非固定变，且随时间变动的跳跃强对於各国股价指报酬的解释非常显著，符合资产报酬的为。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。