查询词典 quantitative

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。

In this work, GC-MS, ICP-OES, UV-Visible Spectrophotometry were employed to determine the trace concentrations of the above six hazardous substances, and a standard method system for screening primarily, extraction, qualitative and quantitative analyses of the six substances was established and their factors were analyzed. By evaluating the relative standard deviation, recovery, repeatability, limit of detection, linear relation etc., the optimum parameters were given and thus the precision of analysis was equal to or higher than the IEC 62321 standard, meeting the requirement of RoHS.

针对中国电子电气业在遵守RoHS符合性实践中存在的诸多问题，本文采用GC-MS，ICP-OES，UV-Visible分光光度法等，对我国南方和香港地区各类电子电气产品中六种有害物质进行痕量分析，建立了一套标准的六种有害物质初步筛选、萃取、定性、定量分析方法，并对此方法体系的影响因素进行分析，对其相对标准偏差、回复率、再现率、检出限、线性关系等进行评估，得出了优化测试参数，在此条件下其检测的精密度达到或高于国际IEC 62321标准，满足RoHS测试要求。

By qualitative and quantitative analysis, the paper mainly discusses the financial evaluation metrics. On the basis of the challenges brought by the E-business atmosphere, the paper analyzes the limitedness in traditional Performance Evaluation methods.

本文在全面分析电子商务环境给现代企业带来的机遇和挑战的基础之上，比较分析了传统企业业绩评价指标体系的局限性，指出电子商务企业的业绩评价应从其自身特点出发，建立以企业价值为导向的评价指标体系。

Results showed that the standard curve made by pMD-18T-GHR had good linear dependence, and the fluorescent quantitative RT-PCR assay was sensitive, specific and reliable.

结果表明，由pMD-18T-GHR所构建的标准曲线线性关系良好，建立的GHR基因荧光定量PCR检测方法灵敏度高、特异性强（可以检测出低于10个拷贝/μl的样品），准确可靠。

Then, a new quantitative analysis method, based on the observed dependence of the linear correlation coefficient between spectra of sample analyzed and the spectrum of reference certified samples, was introduced and analyzed for its application.

自相关定量分析通过建立标准参考样品的光谱数据库，将分析样品多次测量的光谱与各参考样品光谱进行相关性分析，依据相关性系数的大小与分布概率，判断分析样品的特性与成分。

This is useful for the further on-line quantitative analysis and quality control of linseed oil.

这为今后亚麻油的定量分析和在线监控提供了重要的依据。

AIM Automatic measuring and quantitative analysis of form feature parameter of the liposome and emulsion image.

目的 研究脂质体、乳剂图像的形态参数的自动测量与定量分析。

Because of the decline of growth potential and quantitative decrease in population, as well as deficiency in young seedlings, the community of Liriodendron chinense is now at the senescence phase.

从鹅掌楸种群的生势衰退和数量削减以及幼龄个体的贫乏来看，目前这个群落已处于发育过程的衰老阶段。

The results can be used to supervise inversion to achieve quantitative interpretation of lithology for sand bodies.

另外还可以指导反演数据的解释，做到对岩性体从定性到定量的描述。

This quantitative method has proved to be of good value in identifying lithology with logging data.

结果说明，聚类分析和判别分析相结合的定量方法在测井岩性识别方面具有实用价值。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。