In this study, we investigate the impact factors on air pollution in terms of CO2, SO2 and NOx emissions simultaneously in China and compare changes in air pollution across provinces from 1998 to 2011 using a Multiple...In this study, we investigate the impact factors on air pollution in terms of CO2, SO2 and NOx emissions simultaneously in China and compare changes in air pollution across provinces from 1998 to 2011 using a Multiple Indicators and Multiple Causes Model （MIMIC） within a Structural Equation Model （SEM） framework. Our findings reveal that GDP per capita and total population have the largest impacts on air pollution, followed by energy intensity, foreign direct investment, population density, and industrialization. The results also reveal that the inverted U-shaped Environmental Kuznets Curve （EKC） hypothesis exists in China. Our findings also demonstrate that Shandong, Jiangxi and Liaoning are the top three provinces with the most deteriorated air quality while Xinjiang, Fujian and Ningxia are with the best. These results not only contribute to advancing the existing literature, but also merit particular attention from policy-makers in China.展开更多
BACKGROUND Accurate assessment of the quality of academic journals is of great significance.While Journal Impact Factor(JIF),calculated by Clarivate and based upon the Web of Science literature database,and CiteScore(...BACKGROUND Accurate assessment of the quality of academic journals is of great significance.While Journal Impact Factor(JIF),calculated by Clarivate and based upon the Web of Science literature database,and CiteScore(CS),developed by Elseiver and based upon the Scopus database,have enjoyed high uptake worldwide,efforts continue towards creation of other scientometric indexes that will provide evergreater qualitative insights into journal impact.Such efforts have yielded the newly-launched Journal Article Influence Index(JAII),which is based on the Reference Citation Analysis(RCA)database,an open multidisciplinary citation analysis database based on artificial intelligence technology.AIM To evaluate and summarize the similarities and differences between JAII and JIF/CS as journal evaluation indicators,and provide an intuitive method for visual representation of the related data.METHODS We searched the Journal Citation Reports to obtain the 2021 JIF list,downloaded the CS list updated in July on the Scopus website,and collected the comprehensive list of 2022 JAIIs from the RCA database(www.referencecitationanalysis.com).RESULTS Our research results revealed that by breaking through the time limit of mainstream journalevaluation methods, the JAII is able to perform well in data reliability, establishing its benefit as acomplementary scientometric index to JIF and CS.CONCLUSIONJAII provides comprehensive assessment of the quality and performance of journals.展开更多
以ISI Web of Science为检索工具,选取2007年度SCI收录化学类影响因子排名前30位的期刊作为分析对象,统计并计算2005-2006年其载文量、IF,H指数和相对H指数,并对其IF,H指数及相对H指数进行排名,发现30种期刊因期刊类型、载文数量及分析...以ISI Web of Science为检索工具,选取2007年度SCI收录化学类影响因子排名前30位的期刊作为分析对象,统计并计算2005-2006年其载文量、IF,H指数和相对H指数,并对其IF,H指数及相对H指数进行排名,发现30种期刊因期刊类型、载文数量及分析对象不同,其H指数、相对H指数与IF的排名并不一致。指出使用H指数评价科技期刊学术质量时,须依照同类相比原则,并与其他文献计量学指标和定性分析方法相结合。展开更多
以Web of science平台的SCI数据库中收录的2010—2014年间收录的冶金科学领域全部6 694篇论文的元数据作为研究对象,利用探索性因子分析的方法分析在大数据环境下发文数量、被引用次数、篇均被引次数、H指数、G指数、AR指数、R指数、A...以Web of science平台的SCI数据库中收录的2010—2014年间收录的冶金科学领域全部6 694篇论文的元数据作为研究对象,利用探索性因子分析的方法分析在大数据环境下发文数量、被引用次数、篇均被引次数、H指数、G指数、AR指数、R指数、A指数、Ha指数之间的相关性,再综合分析高产作者和高被引作者评价的有效性和各指数之间的相关性。展开更多
文摘In this study, we investigate the impact factors on air pollution in terms of CO2, SO2 and NOx emissions simultaneously in China and compare changes in air pollution across provinces from 1998 to 2011 using a Multiple Indicators and Multiple Causes Model （MIMIC） within a Structural Equation Model （SEM） framework. Our findings reveal that GDP per capita and total population have the largest impacts on air pollution, followed by energy intensity, foreign direct investment, population density, and industrialization. The results also reveal that the inverted U-shaped Environmental Kuznets Curve （EKC） hypothesis exists in China. Our findings also demonstrate that Shandong, Jiangxi and Liaoning are the top three provinces with the most deteriorated air quality while Xinjiang, Fujian and Ningxia are with the best. These results not only contribute to advancing the existing literature, but also merit particular attention from policy-makers in China.
基金the Youth Medical Talent of Jiangsu Province,No.QNRC2016475。
文摘BACKGROUND Accurate assessment of the quality of academic journals is of great significance.While Journal Impact Factor(JIF),calculated by Clarivate and based upon the Web of Science literature database,and CiteScore(CS),developed by Elseiver and based upon the Scopus database,have enjoyed high uptake worldwide,efforts continue towards creation of other scientometric indexes that will provide evergreater qualitative insights into journal impact.Such efforts have yielded the newly-launched Journal Article Influence Index(JAII),which is based on the Reference Citation Analysis(RCA)database,an open multidisciplinary citation analysis database based on artificial intelligence technology.AIM To evaluate and summarize the similarities and differences between JAII and JIF/CS as journal evaluation indicators,and provide an intuitive method for visual representation of the related data.METHODS We searched the Journal Citation Reports to obtain the 2021 JIF list,downloaded the CS list updated in July on the Scopus website,and collected the comprehensive list of 2022 JAIIs from the RCA database(www.referencecitationanalysis.com).RESULTS Our research results revealed that by breaking through the time limit of mainstream journalevaluation methods, the JAII is able to perform well in data reliability, establishing its benefit as acomplementary scientometric index to JIF and CS.CONCLUSIONJAII provides comprehensive assessment of the quality and performance of journals.
文摘以ISI Web of Science为检索工具,选取2007年度SCI收录化学类影响因子排名前30位的期刊作为分析对象,统计并计算2005-2006年其载文量、IF,H指数和相对H指数,并对其IF,H指数及相对H指数进行排名,发现30种期刊因期刊类型、载文数量及分析对象不同,其H指数、相对H指数与IF的排名并不一致。指出使用H指数评价科技期刊学术质量时,须依照同类相比原则,并与其他文献计量学指标和定性分析方法相结合。
文摘以Web of science平台的SCI数据库中收录的2010—2014年间收录的冶金科学领域全部6 694篇论文的元数据作为研究对象,利用探索性因子分析的方法分析在大数据环境下发文数量、被引用次数、篇均被引次数、H指数、G指数、AR指数、R指数、A指数、Ha指数之间的相关性,再综合分析高产作者和高被引作者评价的有效性和各指数之间的相关性。
