查询词典 skewness of distribution

The "non-sandwich" strap possesses the quality of relatively light weight, low skewness,stable production quality.bright color.high lustrousness, high tension strength,suiting for each kind of packer to pack.

生产不夹心的打包带，具有比克重轻，偏斜度低，产品质量稳定，颜色鲜艳，光泽度高，拉力强度大，适合各类打包机打包，本机组生产的打包带可与日本，韩国打包带媲美。

In order to fully evaluate fund managers' speculative behavior,this thesis would estimate fund managers' speculative risk via the measure of systematic skewness.

研究发现，在熊市基金经理往往承担着更多的投机风险，基金投机风险的变化与基金绩效的变化呈负相关关系。

As we know, financial time series is asymmetry and fat-tailed. Negative skewness and excess kurtosis are two stylized facts in financial markets.

然而，金融时间序列的分布往往具有"非对称"和"厚尾"特征，表现为"负偏度"和"超出峰度"。

In fact, negative skewness means that the risk for a substantial loss is bigger than the chance of a substantial gain. A high level of kurtosis means that the asset has a high probability of extreme events.

负偏度的存在使得资产收益下降的可能性大于上升的可能性；超出峰度的存在使得极值事件比在正态条件下更容易发生，从而增加风险，将其统称为高阶矩风险。

In panel A the equally weighted naive portfolio generally has a better return, smaller risk, less negative skewness and a smaller potential loss than the benchmark portfolios.

更重要的是，这个天真的组合是最小的四个选择、挥发油和较低的标准偏差和最小的范围在六年的时间里的回报。

The preliminary chromatogram data were resolved with Mallat algorithm of wavelet analysis theory. This method that resetting the high frequency signals, reconstructing low frequency and then correcting the background signals in the original signal was to avoid the data skewness with negative digital points after background correction and achieve the baseline correction; according to the study and analysis of simulated data including curve background and real data of the needle-plate and free metal partials insulation defects, the method is effective; the best wavelet function of the background correction is Db5 and the best resolution times of the background correction is 8 for chromatogram data of SF_6 decomposition products, based on the calculation with different wavelet functions and resolution times.

在初步获取的气相色谱数据基础上，运用小波分析技术中的Mallat算法对色谱数据进行小波分解，采取将高频信号置零，重构低频背景信号，再用原始信号扣除背景信号的方法，并对背景信号进行纵向平移以避免扣除后出现负数据点造成色谱峰失真的题目及达到色谱图基线校正的目的；通过对含曲线背景信号的模拟色谱数据和针-板、自由金属微粒缺陷下的真实数据的计算研究表明，该方法的应用是有效的；并通过对不用小波函数和不同分解次数的背景扣除计算，确定了SF_6气体放电分解组分色谱背景扣除所选用的最佳小波函数为Db5小波和最佳分解次数为8次。

Engine, this paper found out that the antigalling abilities for parts being tested although quite smooth, even with quenched and ground surfaces were not too high, while the antigalling abilities were quite higher for those surfaces more rougher than the former but possess fairly big negative contour skewness RSK and considerable large mean spacing Sm of profile micro-inequality.

本文通过SRV 试验、Timken 试验和发动机挺杆的台架试验，发现了试件尽管很光滑，甚至是淬硬后精磨的表面的抗擦伤能力并不高，而粗糙度比前者高，但具有相当大的负轮廓偏斜度Rsk ，且具有相当大的轮廓微观不平度平均间距Sm 的表面具有较高的抗擦伤能力，这是由于它们具有较好支承面及众多"微油池"有利于润滑的结果。

The topographical parameters have been analyzed by taking into account the thermal effect during the friction process. As the results, three kinds of typical topographical features have been observed for the worn surfaces of C G iron with various P content. Namely, C G iron with 0.05% P, 1.30% P, and 0.70% P show worn surfaces characterized by groove ridge, peak pits and their combined topography. The C G iron specimen with peak pits type worn surface topography showes the lowest wear rate and highest friction coefficient, while that with groove ridge type worn surface topography shows the highest wear rate and lowest friction coefficient. The groove ridge type worn surface has a relatively large value of surface height deviation and void volume ratio and negative large value of skewness, which is contrary to the peak pits topography.

结果表明：度销磨损表面主要呈现犁沟型、孤岛型及二者的混合型3种形貌特征，其中具有孤岛型磨损表面形貌特征的试样的摩擦系数较高，磨损率较低；而具有犁沟型磨损表面形貌特征的试样的摩擦系数最低，磨损率最高，分析表面形貌参数发现：犁沟型表面形貌具有最大的表面高度偏差和表面空隙率及高负值的表面高度分布参数；而孤岛型表面形貌的表面高度偏差和表面空隙率最小，表面高度分布参数为高正值。

On the basis of separation density and probable error or imperfection, the quartile skewness and a parameter K that has the meaning of kurtosis are advanced. With above four characteristic values, a mathematical model called quartile model has been set up.

在分选密度、可能偏差或不完善度的基础上，引入了四分位偏度系数和类峰度系数K，直接用上述四参数构造了一个分配曲线数学模型-四分位模型。

At last, it attempts to explain skewness from the point of view of Behavioral Finance.

最后从行为金融学角度出发分析了投资者的心理偏好对资产定价的影响。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。