United States of America (USA)
News
Impact factors are still widely used in academic evaluations
18 April 2019
Holly Else
Survey finds that 40% of research-intensive universities mention the controversial metric in review documents — despite efforts to dampen its influence.
Unconscious bias limits women's careers
15 April 2019
Smriti Mallapaty
The vast gender gap in Japanese science has leading women researchers calling for change.
Career mobility: Researchers change places to progress
1 April 2019
Smriti Mallapaty (Data analysis by Rodrigo Costas Comesana)
Moving countries to further a career in science has its benefits, but it isn’t an option for everyone.
1 December 2017 - 30 November 2018
Subject/journal group: All
The table to the right includes counts of all research outputs for United States of America (USA) published between 1 December 2017 - 30 November 2018 which are tracked by the Nature Index.
Hover over the donut graph to view the FC output for each subject. Below, the same research outputs are grouped by subject. Click on the subject to drill-down into a list of articles organized by journal, and then by title.
Note: Articles may be assigned to more than one subject area.
| AC | FC |
|---|---|
| 27381 | 19817.21 |
Outputs by subject (FC)
| Subject | AC | FC | |
|---|---|---|---|
| Chemistry | 7259 | 5454.95 | |
| Earth & Environmental Sciences | 4035 | 2729.32 | |
| Earth and Planetary Science Letters | 302 | 195.20 | |
| Ecology Letters | 80 | 50.81 | |
| Environmental Science and Technology | 691 | 500.46 | |
| Geochimica et Cosmochimica Acta | 300 | 205.71 | |
| Geology | 148 | 101.41 | |
| Geophysical Research Letters | 791 | 572.65 | |
| Journal of Geophysical Research: Atmospheres | 358 | 253.58 | |
| Journal of Geophysical Research: Solid Earth | 248 | 168.45 | |
| Nature | 77 | 48.10 | |
| Nature Climate Change | 67 | 40.52 | |
| Nature Communications | 248 | 126.17 | |
| Nature Genetics | 1 | 1 | |
| Nature Geoscience | 91 | 53.14 | |
| Proceedings of the National Academy of Sciences of the United States of America | 193 | 137.48 | |
| Science | 62 | 38.49 | |
| Science Advances | 121 | 77.16 | |
| Water Research | 257 | 158.99 | |
| Life Sciences | 11666 | 8765.84 | |
| Physical Sciences | 7511 | 4975.86 | |
1 December 2017 - 30 November 2018
View the connected world of international research collaboration. Visualize collaborations by subject or region.
Collaborations between countries
Percentage of collaboration by FC
Hover over the graph to view the percentage of collaboration.
Top 10 collaborators by FC
- United States of America (USA)
-
China (3916.96)
-
United Kingdom (UK) (1740.21)
-
Germany (1731.77)
-
Canada (1028.38)
-
France (966.05)
-
Japan (910.84)
-
Switzerland (667.35)
-
South Korea (627.86)
-
Australia (615.78)
-
Italy (542.53)
Collaboration is determined by the combined fractional count (FC) of United States of America (USA) and the collaborating country.
Top 10 institutions from United States of America (USA)
| Institution | AC | FC | |
|---|---|---|---|
| 1. | Harvard University | 2295 | 864.53 |
| 2. | Stanford University | 1469 | 602.85 |
| 3. | Massachusetts Institute of Technology (MIT) | 1696 | 564.44 |
| 4. | University of California, Berkeley (UC Berkeley) | 1229 | 403.87 |
| 5. | National Institutes of Health (NIH) | 901 | 382.27 |
| 6. | Yale University | 852 | 340.33 |
| 7. | University of Michigan (U-M) | 838 | 335.84 |
| 8. | Northwestern University (NU) | 735 | 326.11 |
| 9. | University of California, Los Angeles (UCLA) | 937 | 322.98 |
| 10. | University of California, San Diego (UC San Diego) | 917 | 319.66 |
Numerical information only is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
