|
Science in Japan, 1998-2002
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 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 |
14.99 |
Even |
| Physics |
14.26 |
-4 |
| Pharmacology |
13.18 |
-25 |
| Chemistry |
12.34 |
-3 |
| Biology & Biochemistry |
11.28 |
-16 |
| Agricultural Sciences |
10.56 |
-10 |
| Microbiology |
10.24 |
-31 |
| Molecular Biology |
10.02 |
-17 |
| Engineering |
9.58 |
-13 |
|
**<---
Japan's overall percent share, all
fields: 9.55 --->** |
| Neurosciences |
9.43 |
-27 |
| Computer Science |
9.13 |
-58 |
| Immunology |
8.91 |
-10 |
| Clinical Medicine |
8.86 |
-21 |
| Plant & Animal Sciences |
7.55 |
-8 |
| Space Science |
6.90 |
-10 |
| Mathematics |
5.62 |
-20 |
| Geosciences |
5.59 |
-14 |
| Ecology/Environmental |
3.64 |
-25 |
| Psychology/Psychiatry |
2.04 |
-46 |
| Economics & Business |
1.81 |
-47 |
| Social Sciences |
1.04 |
-32 |
Between 1998 and 2002, ISI indexed 343,733 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 (or citations-per-paper average)
for materials-science papers from Japan happened to match precisely the world average in the field for the five-year period (2.09 citations per paper).
Although the impact of Japanese papers was below the world average in the other the fields shown, performance was comparatively strong in such fields
as physics (3.51 cites per paper for Japan versus the world average of 3.64 cites--in other words, Japan's score was 96% of the world mark, or just
4% below), chemistry (97% of the world score), and plant & animal science (92% of the world mark, or 8% below).
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