查询词典 stepwise enhancement

Sample data were selected by standard deviation law and factor variables were selected by the method of principal components analysis, stepwise and enter regression analysis. The forecast precision of the model is 87.35%.

样本数据筛选采用标准差法，因子变量筛选采用主成分因子分析法、多元线性回归的逐步回归和强行进入法等方法，建立的多元回归模型预测总体精度达到87.35%。

Topics covered by this course are:(1) Simple linear regression,(2) Inference based on fitted regression model,(3) prediction based on fitted regression model,(4) Application of simple linear regression,(5) Verification of regression assumption,(6) Multiple regression,(7) Qualitative independent variables,(8) Multicollinearity, and (9) Stepwise regression.

课程内容包含：（1）简单线性回归；（2）回归模式适合性的推论；（3）利用回归模式的预测；（4）线性回归的应用；（5）回归模式假设条件的检定；（6）复回归模式；（7）质量性独立变数的处置；（8）共线性的探测；与（9）逐步回归分析法。

The paper derives detailly the viscoplastic strain velocities of joint, intact rock, as well as multilaminate rock mass corresponding to different stress states, and presents a viscous elastoplastic F·E·M·with consideration of the stepwise excavation sequence and different supporting time of lining in underground works with large cross-section.

分别推导了在不同应力状态下节理面、完整岩石和多组节理岩体粘塑性应变速率的计算公式。提出了节理岩体大断面洞室考虑分步开挖和不同支护时间的粘弹塑性有限元数值方法。

Descriptive statistics, Pearson correlation and Stepwise multiple regression were employed to address the research questions.

本研究采用描述统计、皮尔逊积差相关分析以及逐步多元回归来探讨1学生英语教室结构认知的现况2学生英语成就目标动机的现况3英语教室结构认知与成就目标动机的相关性，以及4四个教室结构对精进目标的预测性。

Taken Qinshui Basin as an example a predictive model of gas content is established by multiple stepwise regression analysis, using Langmuir volume and gas saturation as its parameters. The result of multiple correlation coefficient testing, F-testing and t-testing indicates that the model meets the hypothesis testing of linearity and its matching effect is preferable.

以沁水盆地为例，运用多元逐步回归分析方法，建立了以Langmuir体积和含气饱和度为参数的含气量预测模型；复相关系数、F检验、t检验结果表明，该模型满足线性与方差齐性的假设，拟合效果较好。

There was no factors which is constantly related to arterial IMT and function in the stepwise multiple regression analysis.

多元逐步回归分析在所观察的参数中未发现和血管结构与功能有固定关系的因素。

The collected data were analyzed by t-test and multiple stepwise regression analysis.

并将所搜集的资料以独立样本t考验和多元逐步回归分析来探讨。

In this paper, firstly we use stepwise discriminant analysis method in the multivariate statistics analysis to select the index from all of the enterprise rating index and establish reasonable enterprise credit rating system .

我国国有独资商业银行在信用评级方法上已经基本与国际接轨，但在评级实践中却暴露出一些问题，主要是评级指标和分值标准由主观确定缺乏科学依据。

The relationships of the infracallosal segment of the PerA to the CMA and the A2 segment of the PerA to the frontopolar artery were examined. The distance between the nasion and the site at which a parallel line directed along the long axis of the infracallosal PerA just proximal to the origin of the CMA artery crosses the forehead (which we have named the PC point) was also measured. In addition, the surgical approaches to DACAA were examined in stepwise dissections.

在10具血管经彩色乳胶灌注的尸头上检查大脑前动脉远段区域的显微解剖，了解胼周动脉胼下段与胼缘动脉及胼周动脉A2段与额极动脉的关系，同时测量鼻根部与胼缘动脉起点处近端胼周动脉长轴延长线与额部交点间的距离，并模拟外科入路至大脑前动脉远段动脉瘤。

In addition, the changes of molecular geometry, atomic natural charge and IR spectra of the reaction system during the crucial step of O to attack H showed that the rupture of C—H bond and the formation of O—H bond were concerted stepwise. Obvious changes of atomic natural charge happened to atoms C(1), H(11), O(28), O(29) and N(27). The bond lengths and bond angles related to these atoms were also varied greatly.

NO2中O进攻1-H决速反应过程中，分子几何、原子自然电荷及IR光谱变化表明， C—H键的断裂和N—H键的形成是一个协同过程；参与新键形成和旧键断裂原子C(1)， H(11)， O(28)， O(29)和N(27)的原子自然电荷及与其相关的键长、键角有明显的变化。

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。"