查询词典 weighted mean

Results Sagittal MRI revealed horizontal intravertebral area, hypointense on T1-weighted images and hyperintense with surrounding band of hypointensity on T2-weighted images.

结果 矢状位MRI显示水平方向的带状区， T1加权像为低信号， T2加权像为高信号，周围有低信号区包绕。

MRI findings usually fall into 2 categories: 1 A soft tissue mass that is hypointense on T1-weighted images and hyperintense on T2-weighted images with diffuse homogeneous or slightly heterogeneous enhancement within the collection; 2 As the phlegmonous mass necroses, there may be a peripherally-enhancing fluid collection.

MRI表现通常被分为两类：1）软组织肿块，T1低信号，T2高信号，病灶内弥漫均匀性或轻度不均匀强化；2）当表现为蜂窝组织炎坏死时，表现为边缘强化的积液。

Among 14 cases of trigeminal tumor,12 cases were examined by CT scanning,2 cases by MRI,all of them were confirmed by pathological examination.The density appeared heterogeneous with 6 cases,homogeneous high density with 5 cases and isopyknic with 1 case.Dropped contrast medium,the 12 CT scanning pictures appeared heterogeneous potentialization,and there were no cerebral edema around the tumor.Among 2 cases examined by MRI,T1 weighted image appeared low signal,T2 weighted image appeared high signal.

内容提要三叉神经瘤14例，12例做CT检查，2例做MRI检查，14例术后均经病理检查证实。12例CT扫描呈混杂密度6例，均匀高密度5例，等密度1例，注射造影剂后多呈不均匀强化，肿瘤周围均无脑水肿。2例MRI图像T1加权像呈低信号，T2加权像呈高信号。X线平片示11例有岩骨、颅底骨吸收破坏。

Substituting them into the optimal weighted fusion Wiener filter of the AR signals, a self-turning weighted fusion Wiener filter is presenced, which convergence to the optimal weighed fusion Wiener filter, so that it has the asymptotic optimality.

将它们代入最优加权融合AR信号Wiener滤波器，提出一种自校正加权融合Wiener滤波器。它们以概率1收敛于最优融合Wiener滤波器，因而具有渐近最优性。

This time, the weighted F-value is 4.898, unweighted F-value is 2.957, that shows the weighted gap between class are more obvious that unweighted one, that is, the accuracy of the clustering algorithm is significantly higher than unweighted fuzzy clustering algorithm.

此时，加权的F值为4.898，未加权的F值为2.957，说明加权的类间的差距比未加权的明显，即该算法聚类准确率要明显高于未加权的模糊聚类算法。

Author discusses the approaches of delimitating city's influence coverage, and proposes that we can use Voronoi diagram as a tool, and makes an attempt of application of ordinary Voronoi diagram and weighted Voronoi diagram on delimitating city's affected coverage in Henan province and experimental result shows that weighted Voronoi diagram is an efficient technique for it.

本文分析了划分城市空间影响范围的方法，指出Voronoi图是在城市与区域规划中界定研究对象空间影响范围的一种方法，并分别利用普通Voronoi图和加权Voronoi图进行了模拟河南省城市空间影响范围的实验。

In EC - Bed Linen the Appellate Body examined the first method under Article 2.4.2 for establishing the existence of margins of dumping, i.e. the comparison of a weighted average normal value with a weighted average of prices of all comparable export transactions.

在EC - Bed Linen案中，上诉机构认为，2.4.2条规定的确立倾销幅度存在与否的第一个方法，即对正常价值的加权平均值与全部可比性的出口贸易的加权平均价格进行比较。

As feature extraction acts an important role in pattern recognition system, we propose three novel feature extraction methods for HCCR: a、Two structural feature extraction methods, Stroke Cross Counting Features and Peripheral Features are studied. According to the characteristics of Chinese handwriting samples, we extend the SCCF and PF respectively to weighted elastic SCCF and weighted elastic PF. Experiments show that the modified feature extraction approaches are better than original approaches. b、A new statistical feature extraction method——Elastic Meshing Directional Decomposition Feature extraction is proposed. According to the stroke statistical properties of Chinese character, we first decompose a handwritten character pattern into four directional subpatterns. Then a set of elastic meshes are applied to each of the four subpatterns respectively to extract the pixel distribution features.

统计识别方法：利用统计模式识别的经典方法——Bayes分类方法来进行汉字识别的研究，特征提取是统计模式识别的关键，本文着重围绕手写体汉字的特征分析和提取方法进行了研究，提出了三种特征提取的新方法： a、两种改进的结构特征提取方法：在笔划密度特征和外围特征的基础上，结合手写体汉字的特点，提出了加权非均匀笔划密度特征、加权非均匀外围特征的特征提取新方案； b、一种新的统计特征提取方法——弹性网格方向分解特征，根据汉字方块字的特点及笔划分布的统计特征，对手写体汉字进行横竖撇捺四方向的分解，并利用一系列的弹性网格对汉字分解后各分量的象素进行统计而提取特征，实验证明该特征提取方法用来进行手写体汉字识别是十分可行和有效的。

Further, value-weighted portfolio-matching approaches are better specified and more powerful than equal-weighted approaches.

此外，价值加权投资组合匹配的方法比同等加权方法更好规定，更有力度。

Based on the assumption that investors react differently to public and private information, we set up a Bivariate Vector Auto-regression Model to examine different responses of value-weighted and equal-weighted stock returns and trading volume from public and private information shocks.

本文在投资者对公开信息和私人信息有不同反应的假设基础上，建立一个两变量向量自回归模型，着重考察了A股市场价值加权和平均加权的股票收益率和交易量对私人信息和公开信息冲击的不同反应。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"