stepwise regression method meaning in English
逐步回归方法
Examples
- Beginning with the problem of interlaced region between farming and herding , the boundary line of the interlaced region is calculated based on grid with 10km grid ; then the relation among land use of the region , soil erosion and erosion region is analyzed ; based on factor classification , no useful factors were neglected and stepwise regression method was used to analysis the drive of land use change ; fractal method was applied to analysis the degradation of land - use and relation among land use , soil erosion and wind - water erosion zone ; environmental variances are introduced to establish characteristic index of land use change and analysis the effect of land use change on soil erosion
从农牧交错带的实质问题入手，基于10公里网格，计算农牧交错带的界限；在此基础上分析农牧交错带的土地利用、土壤侵蚀及与风水侵蚀带的关系；在因子分层的基础上，剔除不需要因素，采用逐步回归的方法，进行土地利用变化驱动力分析；运用分形方法分析土地利用的退化，并分析土地利用与土壤侵蚀的关系，引入环境变量，建立土地利用变化特征指数，分析土地利用变化对土壤侵蚀的影响。 - ( 6 ) the reservoir operation function is established utilizing the optimal dispatching results . the state variable and decision variable of the operation function is discussed , and the stepwise regression method is used to derive the operation function . because of the nonlinear features of the function have n ' t been reflected in traditional regression methods , the back - propagation neural network model is introduced to establish the operation function
( 6 )利用水库优化调度结果建立水库调度函数，在分析水库调度函数各特征量的基础上，介绍了用逐步回归方法建立水库调度函数的具体过程，考虑到传统回归方法未能反映调度函数的非线性特性，引入bp神经网络模型求解模型，建立水库调度函数。 - Functions of the correlative analysis , multiple linear regression method and stepwise regression method in identifying environment - affecting factors were compared . with baiyin city of gansu province as an example for analysis , the three methods were used to identify environment - affecting factors of heavy metal pollution of the soil - crop system in the suburbs of the city . based on results of the experiment , indexes were proposed for selecting plans for remedying contaminated soils in the region under research
随着我国汽车保有量的不断提高,汽车排放污染物对大气环境的影响已经引起人们的广泛重视,并采用各种各样的方法进行治理,国家有关部门也为此制订了相关的标准和法规.本文简单介绍汽车排放污染物及其检测方面的基本知识 - Subjects were measured by rimer ' s questionnaires for teachers , life event questionnaires for primary school students and embu etc . stepwise regression method was used to analyse demographic , psychological and social factors which may have effect on childhood behavior disorder . also the multiple logistic regression analysis was used to identify significant risk factors for suicide ideation of children . results : the prevalence rates of children with devient scores on the teacher ' s scales of rutter questionnaires were 16 . 3 %
采用rutter儿童行为问卷(教师问卷) 、父母养育方式评价量表( embu ) 、小学生生活事件问卷等多种工具综合测量小学生的社会心理状况，并用多元逐步回归分析方法对影响小学生行为问题的社会人口学、心理社会因素进行探讨，同时对小学生自杀意念进行研究分析，通过多因素条件logistic回归模型，筛选出自杀意念的主要危险因素，以期为提高小学生的心理健康水平服务，为素质教育提供科学依据。 - Functions of the correlative analysis , multiple linear regression method and stepwise regression method in identifying environment - affecting factors were compared . with baiyin city of gansu province as an example for analysis , the three methods were used to identify environment - affecting factors of heavy metal pollution of the soil - crop system in the suburbs of the city . based on results of the experiment , indexes were proposed for selecting plans for remedying contaminated soils in the region under research
通过对安徽省辖淮河流域7月份汛期的水质监测结果进行主要污染物浓度及流量之间的变化趋势初步分析,结果表明,汛期淮河流域整体水质状况有所改善;干流污染物浓度与流量存在相关.汛早期受面源污染影响较为明显,中、后期受点源污染为主;支流污染物浓度与流量之间相关不显著,主要受点源排污影响