Assessing occupational exposure via the two - way random effects model 两因素随机效应模型下平均暴露量的检验
Random effect model 随机效应模型
Empirical testing is conducted by using panel data with pooled regression model , fixed effect model and random effect model 通过分析,从全国来看,人均gdp 、市场需求和规模、聚集效应、开放度是影响fdi的主要因素。
Relative risk ( rr ) was used as a measure of the effect of folic acid supplementation on the risk of stroke with a random effect model 采用相对危险度( rr )的大小,作为衡量叶酸补充治疗在降低卒中发生危险有效性的指标。
Design : the medline and the cochrane library databases were searched for studies conducted from 1966 through 2005 . relative risks were pooled by using an inverse - variance weighted random effects model 设计:搜索medline和冠心病图书馆数据库中从1966年到2005年的研究,采用一种反变量加权的随机效应模型计算相对危险度。
Part two introduces the theory of panel data . the basic form of panel data is : yi t = it + xi t it + uit , i = 1 , 2 , … , n ; t = 1 , 2 , … , t panel data is used for describing the instance of swatch in a collectivity in some time , and observing every unit in swatch multi - scale . basing on the different hypothesis of ui , panel data has fixed effect model and random effect model , if ui is a unit constant ( corresponding to the dummy variable of 基于分析结果,本文给出了改革我国公司治理结构的若干建议: ( 1 )股权性质方面,培育有效的国家股持股主体; ( 2 )股权结构方面,逐渐调整股权结构,减少第一大股东持股比例,增加除第一大股东以外的大股东的股权集中度; ( 3 )董事会方面,采取奇数型董事会规模,并完善独立董事的生成机制; ( 4 )激励制度方面,应加大董事及总经理的持股比例。