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 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).
