Is the United States losing ground in science? A global perspective on the world science system

被引：135
作者：
Leydesdorff, Loet [1 ]
Wagner, Caroline [2 ,3 ]
机构：
[1] Univ Amsterdam, ASCoR, NL-1012 CX Amsterdam, Netherlands
[2] SRI Int, Arlington, VA USA
[3] George Washington Univ, Washington, DC USA
来源：
SCIENTOMETRICS | 2009年 / 78卷 / 01期
关键词：
UK SCIENTIFIC PERFORMANCE; BIBLIOMETRIC ASSESSMENT; NANOTECHNOLOGY; TECHNOLOGY; PATENTS; TERMS; CHINA; DELINEATION; NANOSCIENCE; EMERGENCE;
D O I：
10.1007/s11192-008-1830-4
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Based on the Science Citation Index-Expanded web-version, the USA is still by far the strongest nation in terms of scientific performance. Its relative decline in percentage share of publications is largely due to the emergence of China and other Asian nations. In 2006, China has become the second largest nation in terms of the number of publications within this database. In terms of citations, the competitive advantage of the American "domestic market" is diminished, while the European Union (EU) is profiting more from the enlargement of the database over time than the USA. However, the USA is still outperforming all other countries in terms of highly cited papers and citation/publication ratios, and it is more successful than the EU in coordinating its research efforts in strategic priority areas like nanotechnology. In this field, the People's Republic of China (PRC) has become second largest nation in both numbers of papers published and citations behind the USA.
引用
收藏
页码：23 / 36
页数：14
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