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… the average number of times recent articles in a journal were cited in a particular year.
… citation performance of the journal as a whole, and not the performance of any specific article.
Top 20 Biomedical Journals by Number of Articles Published in 2006
Top 20 Biomedical Journals by Total Citations Rec’d 2006
Top 20 Biomedical Journals by 2006 Impact Factor
2006 2005 2004 Source paper – published in 2006 Cited reference – to items published in 2005 or 2004 Citations 2006 Impact Factor All Previous Years 2003 2007 Impact Factor = Cites in 2006 to 2005 or 2004 papers Papers published in 2005 or 2004 The average number of citations in 2006 to scholarly material that was published in the prior two years Time
Properly used Impact Factor can tell us something about a journal as a whole namely the extent to which its recently published papers were cited in a given year.
It tells us nothing concrete about any specific paper or specific author . Most articles in most fields are not highly cited. Less than 25% of all articles receive 5 or more citations and many articles are never cited .
Journals including regional scholarship, targetting a regional rather than international audience, presenting research from a regional perspective.
“ The quality of each of these newly added journals is on the level the world has come to expect from the Web of Science.”
James Testa, Sr, Dir. Ed. Dev. & Publisher Rel.
Regional Journal Content Expansion - 2007 Breakdown for Regional and Subject Area Regions : AP : Asia Pacific EU : European Union LA : Latin America MA : Middle East/Africa NA : North America Subject Areas: A&H : Arts &Humanities AB&ES : AgBio & Environmental Sci CM : Clinical Medicine EC&T : Engineering Computing & Technology LS : Life Science PC&ES : PhysChem & Earth Science S&BS : Social & Behavioral Science Region A&H AB&ES CM EC&T LS PC&ES S&BS Total AP 6 26 45 28 13 32 49 199 EU 40 50 70 46 16 51 91 364 LA 7 24 16 10 4 8 11 80 MA 8 8 11 5 5 4 9 50 NA 0 0 6 0 0 0 1 7 Total 61 108 148 89 38 95 161 700
Spain: Journals in WoS 2002 - 2008 Steady increase in Spanish journal coverage: 87% increase from 2002 to 2008
Growth in Papers in Spain, 1981-2007 Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version. The rate of growth in Spanish papers has averaged 9% since 1981 while the average rate of growth for the world is about 3%. Papers
Spanish contribution to the EU: 2003-2007 Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version. The EU contributed 37% of papers in the world in the most recent 5 year period. Spain was #5 among the top 10 countries driving EU performance in same period.
National Comparisons of Selected Countries Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version. Paper growth in France is just beginning to plateau while Italy and Spain continue to grow. Paper Growth, 1981-2007
National Comparisons of Selected Countries Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version. French share of papers in the world is declining while Italy and Spain is on the rise. Portugal’s share remains relatively flat. Percentage of papers in the world, 1981-2007
Countries contributing 1% or more on average to Total Publications Worldwide, 2003-2007 Source : Thomson Scientific, National Science Indicators, 1981-2007. Standard version.
The average citation rate of countries in relation to the world average citation rate The average citation rate in the world is 4.58 in this 5 year period. This graphically displays countries above and below that world rate. Source : Thomson Scientific, National Science Indicators, 1981-2007. Standard version. Average cites/paper for the world
Average citation rate per paper Source : Thomson Scientific, National Science Indicators, 1981-2007. Standard version.
Spain meets or exceeds world average citation rate (2003-2007) in 10 out of 22 fields Source : Thomson Scientific, National Science Indicators, 1981-2007. Standard version. Spanish average cites/paper World average cites/paper
Comparisons by Total Citations – from Essential Science Indicators Source : Thomson Reuters, Essential Science Indicators, 2004 archive & 2008-Q1 data The top countries have been relatively stable but other countries such as Spain are advancing in citations. Country September 2004 March 2008 USA 1 1 UK 2 2 Germany 3 3 Japan 4 4 France 5 5 Canada 6 6 Italy 7 7 Netherlands 8 8 Switzerland 9 11 Australia 10 9 Sweden 11 13 Spain 12 10
Growth in Citations Citations to Spanish papers continue to grow at a strong rate as papers become widely distributed globally. Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version. Spanish Citation Growth, 1981-2007
Percentage of Papers Cited This graph shows that the percentage of papers receiving citations and can be considered as a measure of influence. The percentage of Spanish papers that are cited has risen strongly over the 25 year period. Source : Thomson Reuters, National Science Indicators, 1981-2007. Standard version.