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Science in: Japan, 2004-08

Japan's world share of science and social-science papers over the last five years, expressed as a percentage of papers in each of 21 fields in the Thomson Reuters database. Also, Japan's relative citation impact compared to the world average in each field, in percentage terms.

  Field Percentage of papers
from Japan
Relative impact
compared to world
Physics 11.80 +4
Materials Science 11.26 +1
Pharmacology & Toxicology 11.24 -21
Biology & Biochemistry 10.36 -15
Chemistry 9.28 +6
Molecular Biology & Genetics 9.09 -9
Microbiology 8.37 -18
Neurosciences & Behavior 7.96 -20
Japan's overall percent share, all fields: 7.88
Engineering 7.86 -13
Clinical Medicine 7.68 -16
Immunology 7.54 +15
Plant & Animal Sciences 7.12 +7
Space Science 7.05 +14
Geosciences 6.72 +2
Agricultural Sciences 6.18 -21
Computer Science 5.53 +1
Mathematics 5.16 -15
Environment/Ecology 3.98 -12
Economics & Business 2.12 -54
Psychiatry/Psychology 1.93 -43
Social Sciences 0.97 -25

Between 2004 and 2008, Clarivate Analytics indexed 383,345 papers that listed at least one author address in Japan. Of those papers, the highest percentage appeared in journals classified under the heading of physics, followed by materials science. As the right-hand column indicates, the relative citation impact of the nation’s physics research was 4% above the world average (4.33 citations per paper for Japan, versus 4.16 cites for the world). Papers from Japan-based Researchers also scored well in immunology (15% above the world mark) and space science (14% above).

SOURCE: National Science Indicators, 1981-2008 (containing listings of output and citation statistics for more than 170 countries; available in standard and deluxe versions from the Research Services Group).

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Sci-Bytes : 2009 : 07.12.2009 - Science in: Japan, 2004-08
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