Journal Impact Factor - an overview | ScienceDirect Topics
www.sciencedirect.com › journal-impact-factorThe annual JCR impact factor is a ratio between citations and recent citable items published. Thus, the impact factor of a journal is calculated by dividing the number of current year citations to the source items published in that journal during the previous 2 years [32]. CiteScore (SCOPUS): CiteScore is a “family” of eight indicators. CiteScore itself is “the number of citations received by a journal in one year to documents published in the three previous years, divided by the ...
Impacts of natural and socioeconomic factors on PM2.5 from ...
www.sciencedirect.com › science › articleApr 15, 2021 · To evaluate the implementation effect of the clean air actions and provide the scientific basis on the future control policy, a Geographical Detector was used to quantify the impact of natural and socioeconomic factors on the PM 2.5 concentration and its reductions in China from the years of 2014–2017. In terms of the impact on PM 2.5 reduction, the industrial sulfur dioxide (SO 2) and industrial soot emissions are the only two factors shown significant influences. So the controls of ...