The subsystem of the casting foresee and analysis established the mathematical model of the quantitative linear regression analysis for the compacted graphite cast iron defects . it provided guarantee for predication and control of casting defective index within permissive ranges 铸件质量分析及预测子系统建立了蠕墨铸铁件缺陷定量分析的线性回归分析数学模型，为预测及控制缺陷废品率在规定范围内提供保证。
Space constraints keep me from going into detail about all the functions in this class , so i encourage you to consult an undergraduate statistics textbook if you want to understand the termininology and steps involved in a simple linear regression analysis 由于篇幅有限，我不可能逐个详细说明这个类中的所有函数，因此如果您想搞清楚简单线性回归分析中所涉及的术语和步骤，我鼓励您参考大学本科学生使用的统计学教科书。
Based on the correlation between groundwater quality and its influence factors , a model for dynamic prediction of groundwater quality is established by using the theory of regression analysis based on multi - element linear regression method 根据地下水水质与其影响因素之间存在的相关关系，运用回归分析理论和方法，建立了一个基于多元线性回归分析法的地下水水质动态预测模型，并将该模型用于遵义市海龙坝地下水水质的动态预测。
Considering that the enterprise cannot research the " customer - enterprise " value deeply , on the basis of that , the paper puts forward evaluating system of customer value in the enterprise according to value contribution , applies ahp to analyze weight of the indexes in consultation with marketing management and selling personnel of the enterprise and relevant experts and then exert clustering analysis and sas software to classify the customers according to the current value and potential value , provide the strategies of the customer classification management . in addition , any resource is exiguity , including economical resource . this paper defines economical resource , puts forward the model of optimum distributing resource and utilizes the method of linear regress equation to get result , which to grope for a new method about calculating marketing expenditure 本文首先界定了客户和客户价值的含义，同时阐述了关系营销中客户价值的理论以及客户价值的影响因素，针对目前“客户?企业”价值的研究还不成熟的研究现状，以及现实中还没有定量分析客户价值大小的方法，本文提出了一套具有可操作性的客户价值评价的指标体系，对客户可以进行比较全面的、多角度的评价，同时采用ahp法对这个评价体系中的各指标因子赋以合理的权重，然后运用聚类分析法和sas统计软件对客户群进行了科学地细分，在此基础上帮助企业制定出不同细分客户群组的营销策略；除此之外，考虑到目前企业对于营销资源的合理分配问题还没有进行过深入地讨论，本着企业经营的根本目的是盈利的原则，论文结合经济学原理以及计量经济学中的多元线性回归分析提出了实现利润最大化的营销资源配置的优化模型，旨在探索一种销售费用最优配置的方法。
When the water - air ratio increases , air ' s changing quantity of enthalpy and absolute humid will be enhanced . at last , the paper analyses the data from single factor experiment by mathematics method and gets relationship formulas about the nozzle flux , valid humidifying quantity and air ' s enthalpy changing quantity 最后，对上述单因素试验得到的数据进行数学分析，运用线性回归分析、多项式回归分析和非线性回归分析的数学方法，得到影响撞针型高压小孔径离心式喷嘴的喷嘴流量、有效加湿量和空气焙变量的数学关系式。
Integrated the monitoring data collected from the scene of blast with the correlative theory of earthquake wave , the blast vibration characteristic of this underground blast engineering and the influence that the blast vibration act on the ground buildings are analyzed . applied the method of duality linearity regression analysis , the propagation attenuational laws of blast earthquake wave in this underground engineering are gained by this software matlab . the analysis results indicat that the attenuational laws of blast earthquake wave are obvious diversity in the condition of difference distances 结合采集到的大量爆破振动现场实测数据,并应用地震波的相关理论,分析了该地下工程开挖爆破的地面爆破振动特性及爆破振动对地面建(构)筑物的影响;应用二元线性回归分析法,通过matlab软件计算得出该地下工程开挖爆破地震波的传播衰减规律;分析结果表明,不同距离下的地面爆破地震波的衰减规律存在明显的差异,近距离条件下爆破地震波的垂直方向分量衰减最慢,远距离条件下垂直方向分量衰减最快,远距离的爆破地震波的垂直方向分量和水平径向分量的衰减指数均要比近距离相应的爆破地震波衰减指数要大。
My thesis wants to seek the right methods and ways of transforming the potential of development into realistic competition ability through research on the process of development and cause of variation of the foreign economic cooperation business of province of jilin . the writer used mathematics covariance tools to find out the key factor of interfering with the potential of development of province of jilin 本文以定量和定性研究相结合的方法为指导思想,主要采用spss统计工具中的因子分析法、特尔菲法、文献调查法与线性回归分析法等对吉林省对外经济合作的发展过程、变化趋势进行研究。
We select correspondingly some specific indices after considering the automobile industrial characteristics , and then use the multiple regression method . the result shows the factors that affect the automobile industrial dividend policy , according to the influence degree , are the company ' s profitability , the circulation stock proportion , the company size , the turnover rate of total asset , but the asset liability ratio and so on are independent of it 实证分析时主要应用多元线性回归分析法,在结合了汽车制造业的行业特征,并相应地选取一些特定指标后,得出了汽车制造业上市公司股利政策影响因素模型,其按影响程度大小依次为公司的盈利能力、流通股比例、公司规模、总资产周转率,而与资产负债率等指标无关。
From the angle of demonstration , this paper first has introduced the special ownership structure of our listed companies and the diversity of dividend payout . then author used the cost minimization model to analyze the dividend policy of 716 stocks listed in shanghai stock exchange during 1997 - 2004 . although some necessary changes have been made into the model , the results suggested that the cost minimization model was not suitable for the situation in china 在实证方面,本文首先运用描述性的统计分析介绍了我国特殊的股权结构以及我国股利分配形式的多样性,接着运用线性回归分析法对我国1997 - 2004年8年间上海证券交易所上市的716支股票的现金分红情况进行了实证研究,运用了改进的约瑟夫的成本最小化模型。
Afterwards , we choose the listed company which is drawn the non - standard auditing opinions by cpa in 2000 , as the studying sample , and the listed company which is drawn the standard auditing opinions , as the controlling sample . through linear return and logistic return analyse , we verify that there are the phenomenon of earnings management in china ' s listed company , on the other hand , we have found the general accounting meanings of earnings management 随后，我们又以2000年度被注册会计师出具了非标准无保留意见的上市公司作为研究样本，同时选取了同样数量的被出具标准无保留意见的上市公司作为控制样本，通过线性回归分析以及logistic回归分析的手段，一方面我们验证发现了我国上市公司中存在的盈余管理现象，另一方面我们也发现了上市公司经常采用的利润操纵手段。
