In the end the dissertation uses the data from the united states and china to testify the hypotheses by ols . the findings of the dissertation are as follows : 1 最后在人口迁移与农村贫困理论阐述基础上,本论文提出了一些政策性建议,以供政府制定政策时参考。
When > 0 , and the independent variables are positively correlated over time , the second term is positive , so the usual ols variance underestimates the true variance of the estimator 当> 0 ,而且自变量在时间上是正相关时,第二项为正,因此通常的ols方差低估了估计量真实的方差。
The paper gives parameters estimation model on the information technology increasing and spreading by using ols . an example illustrates the process and its accuracy of estimation 用差分?最小二乘法对信息技术的增长及扩散曲线模型的参数进行了估计,并用实例说明了估计的过程及精度。
The quantitative calculations for a rotate point source , uh - 1h rotor and ah - l / ols rotor showed that the results were in good agreements with the experimental data and other researc her ' s 文中进行了这几种预测方法的详尽推导和说明,并给出了旋转点源、悬停和前飞旋翼的噪声预测算例。
It also compares the analytical results of multilevel models with the ols results to better understand the advantages of multilevel modeling technique 结果显示,普通模型过高地估计自变量对因变量的作用及影响程度;相反,多层模型调节数据的聚类性质,其参数估计更精确,得出的结论更符合实际。
And then ols was applied to construct the regression model between them respectively . as a result , three regression functions could be constructed to establish the indirect relationship between the two spaces 4 、选取了在卫生与医学研究领域中两个比较典型的实例,运用偏最小二乘回归对它们分别予以分析。
If it is estimated by the method of ols , it will bring about serious effect : the variances of the parameter estimators are not the least , and the accuracy of estimation and prediction decreases 如果对异方差模型进行ols估计,就会产生严重的后果:参数估计量的方差不具有最小方差性;估计与预测的精度降低。
The acoustic noise generated by the rotate point source , uh - 1h rotor in hover and ah - l / ols in forward flight were calculated , and the computed results from several methods were compared with each other and with the experimental data 采用旋转点源、 uh - 1h悬停旋翼、 ah - 1 / ols前飞旋翼作为算例,对所采用的各种噪声预测方法进行了比较。
Teachers and ols are thirsting for storms . especially the koreans , theyre real radicals blood is flowing into our city , these are the mosquitoes . painting our city with the colour of shame 教师和办公室女郎山雨欲来尤其? ?南韩人好激进就血确实已流进我们的城,这些就是蚊子羞辱著我们的城以他人为祭献血色的忧伤被包装为halloween这些与我们血肉肌肤共在的隔绝
Since in many situations the error term is not normally distributed , it is important to know the asymptotic properties ( large sample properties ) , i . e . , the properties of ols estimator and test statistics when the sample size grows without bound 由于在很多情形下误差项可能呈现非正态分布,了解ols估计量和检验统计量的渐近性,即当样本容量任意大时的特性就是重要的问题。