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Top European nations in physics

Top European nations in physics
Data provided by Thomson Reuters from its Essential Science Indicators, 1 January 2001-28 February 2011
Euro rankWorld rankCountryPapers CitationsImpact
11Switzerland18,548 275,984 14.88
22 The Netherlands14,740 207,912 14.11
33 Austria7,974 111,377 13.97
45 Denmark6,366 85,502 13.43
56 Scotland7,126 93,198 13.08
67 England46,319 579,206 12.50
78 Germany88,066 1,052,451 11.95
89 Finland6,436 76,387 11.87
911 Sweden13,128 147,562 11.24
1013 Spain27,081 291,643 10.77
1114 France63,809 666,008 10.44
1215 Hungary5,059 51,560 10.19
1317 Belgium11,005 111,885 10.17
1418 Italy43,732 444,294 10.16
1519 Portugal5,583 54,790 9.81
1620 Greece6,454 59,567 9.23
1722 Czech Republic7,620 59,187 7.77
1823 Poland22,821 165,900 7.27
1930 Russia67,649 429,520 6.35
2032 Ukraine12,218 52,504 4.30

The data above, on the top 20 European nations in the field of physics by citation impact, were extracted from the Essential Science Indicators database of Thomson Reuters. This database, currently covering the period January 2001 through February 2011, surveys only articles (original research reports and review articles) in journals indexed by Thomson Reuters.

Articles are assigned to a field based on the journals in which they were published and the Thomson Reuters journal-to-field scheme. Papers published in multidisciplinary journals such as Nature and Science are individually assigned to their appropriate fields. Both articles tabulated and citation counts to those articles are for the period indicated.

Here our ranking in physics is by citations per paper to reveal weighted influence. For articles with multiple authors from different nations, each nation receives full, not fractional, publication and citation credit. Essential Science Indicators lists nations ranked in the top 50 per cent for a field over a given period, based on total citations. In physics, 89 nations are listed, meaning 178 were surveyed. Thirty-two nations earned 50,000 or more citations during the period. The world average in citation impact for the field was 8.44, so 16 of the 20 nations above surpassed this mark. Also appearing is the world rank by impact for each of these European nations. As can be seen, the top nations in impact in physics worldwide are almost exclusively European, with the exception of the United States, at fourth in the world, which posted a citations-per-paper score of 13.64.

For more information on Thomson Reuters Essential Science Indicators, see http://science.thomsonreuters.com/products/esi/.

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