|
Science in Japan, 1999-2003
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 ISI 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
|
| Materials Science |
15.33 |
+2 |
| Physics |
14.81 |
-5 |
| Pharmacology |
13.04 |
-25 |
| Chemistry |
12.30 |
-3 |
| Biology & Biochemistry |
11.11 |
-13 |
| Agricultural Sciences |
10.37 |
-13 |
| Microbiology |
10.19 |
-28 |
| Molecular Biology |
10.06 |
-16 |
| Engineering |
9.98 |
-10 |
|
**<---
Japan, 1999-2003's overall percent share, all
fields: 9.60 --->** |
| Neurosciences |
9.37 |
-27 |
| Computer Science |
8.95 |
-48 |
| Immunology |
8.89 |
Even |
| Clinical Medicine |
8.81 |
-20 |
| Plant & Animal Sciences |
7.59 |
-6 |
| Space Science |
6.96 |
-7 |
| Geosciences |
5.91 |
-12 |
| Mathematics |
5.81 |
-22 |
| Ecology/Environmental |
3.84 |
-27 |
| Psychology/Psychiatry |
2.01 |
-35 |
| Economics & Business |
1.96 |
-49 |
| Social Sciences |
1.06 |
-25 |
Between 1999 and 2003, Thomson ISI indexed 353,657 papers that listed at least one author address in Japan. Of those papers, the highest percentage appeared in journals classified under the heading of materials science. As the right-hand column indicates, the impact of Japanese materials-science research was 2% above the world mark in the field (2.25 cites per paper for Japan versus 2.21 cites for the world). Relative-impact performance was also comparatively strong in physics (95% of the world mark, or just 5% below), chemistry (97% of the world score), and plant & animal sciences (94% of the world mark, or just 6% below). In immunology, Japan's impact figure happened to match the world mark: 10.22 cites per paper.
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