Is the United States losing ground in science? A global perspective on the world science system
Is the United States losing ground in science? A global perspective on the world science system
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DOI：
10.1007/s11192-008-1830-4
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发表时间：
2009-01-01
期刊：
影响因子：
3.9
通讯作者：
Wagner, Caroline
中科院分区：
文献类型：
--
作者：
Leydesdorff, Loet;Wagner, Caroline
根据科学引文索引扩展网络版，美国仍然是迄今为止科学表现最强的国家。其出版物百分比份额的相对下降主要是由于中国和其他亚洲国家的崛起。2006年，中国已成为该数据库中出版物数量第二大的国家。在引文方面，美国“国内市场”的竞争优势正在减弱，而随着时间的推移，欧盟（EU）从数据库的扩大中获得的利润比美国更多。然而，美国在高引用论文和引用/出版比率方面仍然优于所有其他国家，并且在协调纳米技术等战略优先领域的研究工作方面比欧盟更成功。在这一领域，中华人民共和国（PRC）已成为仅次于美国的论文发表量和引用量第二大的国家。
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.