Table 5-26
International collaboration on S&E articles, by selected region and country/economy pair: 2005
Region, country/economy pair   International
collaboration index
North/South America    
Canada–U.S.   1.19
Mexico–U.S.   0.98
U.S.–Brazil   0.89
Argentina–Brazil   5.01
Mexico–Argentina   3.06
North Atlantic    
UK–U.S.   0.72
Germany–U.S.   0.69
France–U.S.   0.59
Canada–UK.   0.72
Canada–France   0.66
France–Germany   0.86
France–UK   0.83
Germany–UK   0.79
Spain–France   1.27
Italy–Switzerland   1.39
Norway–Denmark   4.64
Finland–Sweden   3.84
Sweden–Denmark   3.48
Pacific Rim    
Japan–U.S.   0.91
China–U.S.   0.91
South Korea–U.S.   1.25
Taiwan–U.S.   1.27
China–Canada   0.74
Japan–Canada   0.52
Asia/South Pacific    
China–Japan   1.56
South Korea–Japan   2.02
Australia–Singapore   1.72
Australia–China   1.07
Australia–New Zealand   4.23
India–Japan   1.31
India–South Korea   1.84

UK = United Kingdom

NOTES: International collaboration index is first country's rate of collaboration with second country divided by second country's rate of international coauthorship. Article counts from set of journals covered by Science Citation Index (SCI) and Social Sciences Citation Index (SSCI). Articles classified by year they entered database, rather than year of publication, and assigned to region/country/economy on basis of institutional address(es) listed on article. Articles on whole-count basis, i.e., each collaborating country/economy credited one count.

SOURCES: Thomson Scientific, SCI and SSCI,; ipIQ, Inc.; and National Science Foundation, Division of Science Resources Statistics. See appendix table 5-35.

Science and Engineering Indicators 2008