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中国交通运输业碳排放的通径分析模型 被引量:4
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作者 肖紫薇 袁长伟 云虹 《统计与决策》 CSSCI 北大核心 2016年第15期25-29,共5页
为分析各因素对交通运输业碳排放量的直接与间接影响,文章构建了交通运输业碳排放的通径分析模型。模型引入了交通运输业增加值占比、能源结构、交通发展水平等影响因子,运用多元线性回归求得通径系数,并对影响因子间的相互影响作用进... 为分析各因素对交通运输业碳排放量的直接与间接影响,文章构建了交通运输业碳排放的通径分析模型。模型引入了交通运输业增加值占比、能源结构、交通发展水平等影响因子,运用多元线性回归求得通径系数,并对影响因子间的相互影响作用进行分析。实例应用结果显示:中国交通运输业碳排放量增长的主要原因是交通发展水平的提高。交通发展水平对碳排放产生正向影响达到0.9883。结果表明模型能描述影响碳排放量的各因素间相互影响。 展开更多
关键词 交通运输 碳排放 通径分析模型 影响因素
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结构方程模型的比较:针对用户对信息系统的接受程度 被引量:2
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作者 杨彤骥 杨红玉 王新海 《情报杂志》 CSSCI 北大核心 2010年第3期15-19,共5页
在信息系统的研究过程中,结构方程模型已被越来越多地使用在说明某些研究问题方面。展示三种结构方程模型(通径分析、维度级别、小组分析)的同时,对其不同做了比较,使用这三种不同的结构方程模型来检测延伸式科技接受模型中的变量网络... 在信息系统的研究过程中,结构方程模型已被越来越多地使用在说明某些研究问题方面。展示三种结构方程模型(通径分析、维度级别、小组分析)的同时,对其不同做了比较,使用这三种不同的结构方程模型来检测延伸式科技接受模型中的变量网络。有利于以后的研究人员根据其研究问题选择适当的模型。 展开更多
关键词 会计信息系统 结构方程模型 通径分析科技接受模型
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Evaluation and Driving Force Analysis of Marine Sustainable Development based on the Grey Relational Model and Path Analysis 被引量:8
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作者 GAO Sheng ZHAO Lin +2 位作者 SUN Huihui CAO Guangxi LIU Wei 《Journal of Resources and Ecology》 CSCD 2020年第6期570-579,共10页
With the rapid development of the marine economy,the demand for marine resources development and the pressure on marine environmental protection are gradually increasing.It is critical to evaluate and analyze the driv... With the rapid development of the marine economy,the demand for marine resources development and the pressure on marine environmental protection are gradually increasing.It is critical to evaluate and analyze the driving forces of marine sustainable development in order to promote the coordinated development of the marine economy,resources and environment.Taking Jiangsu Province of China as an example,this paper constructs an evaluation index system for marine sustainable development from the three aspects of marine economy,resources and environment,and calculates the weight of the variation coefficient for each indicator.Based on the grey relational model,the average value of the relational degree,calculated by the average value method of correlation coefficients and the weighting method,is then used to evaluate the status of marine sustainable development in this province.The comprehensive index model is used to analyze the dynamic trend of the evolution of marine sustainable development.The driving forces of marine sustainable development are analyzed by the path analysis method combined with the average values of the grey relational degree for each indicator.This analysis found that the marine sustainable development in 2016 and 2012 was good,the situation in 2007 was bad,and the remaining years were intermediate.Compared with the previous years,the optimal conditions of 2008 and 2012 were obvious.The main driving factors of marine sustainable development are cargo throughput of coastal ports,economic losses caused by storm surges in coastal areas,the area of marine nature reserves in coastal areas,coastal wind power generation capacity,and marine biodiversity. 展开更多
关键词 marine sustainable development coefficient of variation method grey relational model composite index model path analysis
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