||
国家的文献总量可比较,各个学科也可以比较。
四国的科技文献比较分析结果如下:
Documents 文献量
Citable Documents 可引文献量
Cites 被引文献量
Self Cites 自引文献量
(Cites-Self cites) per Document 篇均自引量
H Index H指数
% cited documents 被引文献%
International collaboration 国际合作文献量
分析平台 http://www.scimagojr.com/compare.php?un=countries&c1=CN&c2=JP&c3=US&c4=GB&area=0&category=0&in=h
DocumentsCitable DocumentsCitesSelf CitesCites per Document(Cites-Self cites) per Document
H Index% cited documentsInternational collaboration
| United States | United Kingdom | Russian Federation | China |
---|---|---|---|---|
1996 | 330,556 | 83,214 | 31,598 | 28,649 |
1997 | 330,988 | 87,552 | 32,066 | 32,925 |
1998 | 325,903 | 88,376 | 32,693 | 38,447 |
1999 | 323,775 | 88,800 | 31,146 | 39,061 |
2000 | 332,992 | 92,859 | 31,643 | 45,558 |
2001 | 327,640 | 87,684 | 32,492 | 58,912 |
2002 | 345,754 | 90,375 | 32,679 | 58,400 |
2003 | 380,984 | 100,076 | 33,463 | 71,646 |
2004 | 424,615 | 109,318 | 36,221 | 107,994 |
2005 | 435,093 | 112,597 | 35,272 | 147,527 |
2006 | 489,617 | 131,418 | 34,334 | 187,722 |
2007 | 484,740 | 136,675 | 34,680 | 212,358 |
2008 | 499,003 | 139,539 | 35,954 | 250,992 |
2009 | 531,362 | 149,426 | 37,523 | 296,921 |
2010 | 560,131 | 155,191 | 38,795 | 334,603 |
2011 | 577,872 | 160,996 | 42,026 | 387,417 |
2012 | 582,655 | 164,705 | 43,083 | 404,910 |
2013 | 563,292 | 162,574 | 43,930 | 425,677 |
详细数据分析结果 http://www.scimagojr.com/compare.php?c1=US&c2=GB&c3=RU&c4=CN&area=0&category=0&in=it
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