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Handful of U.S. Schools Claim Larger Share of Output

Science  19 Nov 2010:
Vol. 330, Issue 6007, pp. 1032
DOI: 10.1126/science.330.6007.1032

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Summary

A new analysis of the U.S. research base by Thomson Reuters points to an increasing concentration of academic research. The report, the latest in a series of such assessments of individual countries, examines both the share of scientific papers written by researchers at a particular institution and the impact of those papers, as measured by the average number of citations per publication. Two dozen universities hold a combined 42% share of the overall U.S. output for the years 2005 to '09, the report finds. That's up from 31% during the 1981–85 period.