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 ...
ScienceDirect - Wikipedia
https://en.wikipedia.org/wiki/ScienceDirectScienceDirect is a website which provides access to a large bibliographic database of scientific and medical publications of the Dutch publisher Elsevier. It hosts over 18 million pieces of content from more than 4,000 academic journals and 30,000 e-books of this publisher. The access to the full-text requires subscription, while the bibliographic metadata is free to read. ScienceDirect is operated by the British-Dutch publisher Elsevier. It was launched in March 1997.
Environmental Impact Factor - an overview | ScienceDirect Topics
www.sciencedirect.com › topics › engineeringThe environmental impact factor is defined as the ratio of compounds released into the environment, due to human energy consumption, to the corresponding natural release of these compounds. Green hydrogen is defined as the hydrogen produced from water using renewable energy sources. The environmental impact factor of green hydrogen is found to be 0.0001 and, moreover, is two orders of magnitude less than that obtained for carbon/CO 2 at 0.036.