Bibliometric Analysis Asia-Pacific Research Area ... - JuSER

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Figure 12 shows that within the period under review 1992 – 2007 the proportion of publications
by the EU-27 (34.5 %) and the USA (33.0 %) in the Science Citation Index are of a comparable
level 7 . The same is true of Japan (7.8 %) and Germany (7.5 %). China is one of the five
countries in the world with the highest proportion of publications in the Science Citation Index
with approx. 3.8 % publications. However, compared to the EU-27 or the USA, this represents
only one tenth.
Proportion of publications in SCI by countries in relation to total records in SCI
SCI database 1992-2007: 15 951 504 publications
Percentage of SCI publications
12%
10%
8%
6%
4%
42%
35%
28%
21%
14%
Percentage of SCI publications (USA and EU-27)
2%
7%
0%
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
0%
Germany Japan China Australia South Korea Taiwan New Zealand Singapore
Iran Thailand Malaysia Indonesia Vietnam USA EU-27
Figure 13: Proportion of countries in relation to total records in SCI
Figure 13 illustrates the proportion of countries in relation to the total records in SCI over time. It
is clear that the proportion from the USA is decreasing. In 1992, the USA contributed to more
than 35 % of all of the documents listed in SCI, whereas in 2007, this figure had fallen to barely
30 %. The EU-27 proportion remains very stable over the entire period. Remarkable gains were
recorded for China: the proportion rose from around 1.5 % in 1992 to around 7.5 % in 2007. The
other key countries in this study underwent almost no change in their total share in SCI with the
exception of South Korea and Taiwan with small increases. Japan experienced a loss of 1.5 %
in its share of publications in SCI.
7 The values shown in Figure 12 include co-authorship of scientific publications for each country involved
in a publication. This means that the summation of all of the values for each country represented in SCI
will always be more than 100 %.
10