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2009-2010年中国决策科学研究文献曾超过美国,近年下降很多,而美国的文献很稳定,为什么?
请教LIU教授
详细数据见 http://www.scimagojr.com/compare.php?c1=CN&c2=US&c3=GB&c4=JP&area=1800&category=0&in=it
DocumentsCitable DocumentsCitesSelf CitesCites per Document(Cites-Self cites) per Document
H Index% cited documentsInternational collaboration
| China | United States | United Kingdom | Japan |
---|---|---|---|---|
1996 | 112 | 2,824 | 563 | 195 |
1997 | 125 | 2,757 | 576 | 185 |
1998 | 143 | 2,745 | 660 | 202 |
1999 | 166 | 2,729 | 682 | 207 |
2000 | 198 | 2,694 | 778 | 199 |
2001 | 230 | 2,594 | 678 | 179 |
2002 | 187 | 3,101 | 770 | 241 |
2003 | 291 | 3,241 | 787 | 224 |
2004 | 391 | 3,336 | 887 | 274 |
2005 | 446 | 3,863 | 991 | 329 |
2006 | 1,077 | 4,414 | 1,270 | 381 |
2007 | 1,819 | 4,763 | 1,572 | 477 |
2008 | 3,820 | 5,222 | 1,457 | 459 |
2009 | 5,333 | 5,083 | 1,532 | 487 |
2010 | 6,838 | 5,184 | 1,483 | 497 |
2011 | 4,800 | 5,464 | 1,489 | 441 |
2012 | 3,270 | 5,498 | 1,515 | 592 |
2013 | 2,534 | 5,282 | 1,656 | 411 |
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