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.

News

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
2 0.94
388 241.14
592 482.92
597 437.56
432 320.73
256 189.98
1 1
389 287.41
1312 1091.08
371 304.96
530 381.78
97 69.44
72 57.75
73 55.95
738 468.58
78 48.56
1 1
78 52.49
1 0.94
323 268.85
298 233.25
107 84.14
103 65.42
420 309.09
Earth & Environmental Sciences 4035 2729.32
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)
  1. China (3916.96)
    1928.73
    1988.23
  2. 979.02
    761.19
  3. Germany (1731.77)
    980.94
    750.84
  4. Canada (1028.38)
    631.38
    397.01
  5. France (966.05)
    583.39
    382.66
  6. Japan (910.84)
    550.82
    360.02
  7. Switzerland (667.35)
    392.72
    274.62
  8. South Korea (627.86)
    385.52
    242.35
  9. Australia (615.78)
    371.50
    244.28
  10. Italy (542.53)
    328.52
    214.01

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

Enhanced profiles

Return to country/territory outputs