Proceedings of the National Academy of Sciences of the United States of America
11.5(top 1%)
Impact Factor
12.3(top 1%)
extended IF
950(top 1%)
H-Index
95.6K
authors
147.8K
papers
16.6M
citations
32.5K
citing journals
1.3M
citing authors
Selected Period:
The graph shows the changes in the impact factor of Proceedings of the National Academy of Sciences of the United States of America and its the corresponding percentile for the sake of comparison with the entire literature. Impact Factor is the most common scientometric index, which is defined by the number of citations of papers in two preceding years divided by the number of papers published in those years.
How Influential is Proceedings of the National Academy of Sciences of the United States of America?
Proceedings of the National Academy of Sciences of the United States of America is the 6th out of 116 General Sciences journals. This means the journal is among the top 6% in the science branch of General Sciences. This Journal is the 34th out of 18,687 Social Sciences journals. This means the journal is among the top 1% in the science branch of Social Sciences.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.
