Overlay Maps of Science 2010 update Ismael Rafols

Overlay Maps of Science (2010 update) Ismael Rafols 1, 2, Alan Porter 2 and Loet Leydesdorff 3 1 SPRU, University of Sussex, Brighton 2 School of Public Policy, Georgia Institute Technology, Atlanta 3 Amsterdam School of Comm. Res. (ASCo. R), Univ. Amsterdam Rafols, I. , Porter, A. L. and Leydesdorff, L. (2010) Overlay science maps: a new tool for research policy and library management. Journal of the American Society for Information Science and Technology. 61(9), 871– 1887. PDF. Interactive Maps. Overlay toolkit.

Global Map of Science, 2010 update 224 Web of Science Categories Environmental S&T 4 Factors with Pajek Bio logy and Medicine Physical Science and Engineering Psychology and Social Sciences Method from Rafols, Porter and Leydesdorff (2009)

Global Map of Science, 2010 update 224 Web of Science Categories 6 Factors with Pajek Environmental S&T Bio logy and Medicine Physical S&T Psychology and Social Issues Social Sciences Computer Sci. and Engineering Method from Rafols, Porter and Leydesdorff (2009)

Global Map of Science, 2010 update 224 Web of Science Categories 19 Factors with Pajek Agri Sci Ecol Sci Geosciences Infectious Diseases Environ Sci & Tech Clinical Med Mech Eng Chemistry Materials Sci Biomed Sci Psychological Sci. Physics Health & Social Issues Clinical Psychology Computer Sci Math Methods Social Studies Business & MGT Econ Polit & Geography Method from Rafols, Porter and Leydesdorff (2009)

Global Map of Science, 2010 update 224 Web of Science Categories Agri Sci Insert Pajek Image on top Ecol Sci Geosciences Infectious Diseases Environ Sci & Tech Clinical Med Mech Eng Chemistry Materials Sci Biomed Sci Psychological Sci. Physics Health & Social Issues Clinical Psychology Computer Sci Math Methods Social Studies Business & MGT Econ Polit & Geography Method from Rafols, Porter and Leydesdorff (2009)

Global Map of Science, 2010 update 224 Web of Science Categories 4 Factors with VOSviewer Bio logy and Medicine Environmental S&T Psychology and Social Sciences Physical Sciences

Global Map of Science, 2010 update 224 Web of Science Categories 4 Factors with VOSviewer Bio logy and Medicine Environmental S&T Psychology and Social Sciences Physical Sciences

Global Map of Science, 2010 update 224 Web of Science Categories 6 Factors with VOSviewer Bio logy and Medicine Environmental S&T Psychology and Social Issues Social Sciences Computer Sci & Engineering Physical Sciences

Global Map of Science, 2010 update 224 Web of Science Categories 6 Factors with VOSviewer Bio logy and Medicine Psychology and Social Issues Environmental S&T Social Sciences Physical Sciences Computer Sci & Engineering

19 Factors' Agri Sci Biomed Sci Business & MGT Chemistry Clinical Med Psychological Sci Computer Sci Ecol Sci Econ Polit & Geography Environ Sci & Tech Geosciences Health & Social Issues Infectious Diseases Materials Sci Math Methods Mech Eng Physics Clinical Psychology Social Studies 19 factors 6 Factors 17 Biology and Medicine 1 Computer Sci. and Engineering 14 Environmental S&T 16 Physical S&T 5 Psychology and Social Issues 9 Social Sciences 3 6 4 13 7 10 15 2 19 12 18 8 11 6 factors 4 clusters 1 Biology and Medicine 6 Environmental S&T 3 Physical Science and Engineering 2 Psychology and Social Sciences 4 5 4 clusters 1 4 2 3

Examples Based on 2007 Global Science Map

Global Map of Science 221 Web of Science Categories 18 Factors Agri Sci Ecol Sci Geosciences Infectious Diseases Env Sci & Tech Clinical Med Chemistry Matls Sci Biomed Sci Engineering Psychological Sci. Health & Social Issues Clinical Psychology Physics Business & MGT Computer Sci Social Studies Econ Polit. & Geography Rafols, Porter and Leydesdorff (2009)

U. Amsterdam EMBL Georgia Tech LSE

Pfizer Unilever Nestlé Shell

NIH BBSRC NSF EPSRC

References Subject Category-based Science Maps • Leydesdorff, L. and Rafols, I. (2009) A Global Map of Science Based on the ISI Subject Categories. Journal of the American Society for Information Science and Technology, 60(2), 348 -362. • Rafols, I. and Leydesdorff, L. (2009). Content-based and Algorithmic Classifications of Journals: Perspectives on the Dynamics of Scientific Communication and Indexer Effects. Journal of the American Society for Information Science and Technology, 60(9), 1823 -1835. Overlay • Rafols, I. and Meyer, M. (2010) Diversity and Network Coherence as indicators of interdisciplinarity: case studies in bionanoscience. Scientometrics, 82(2), 263 -287. • Rafols, I. , Porter, A. L. and Leydesdorff, L. (2010) Science overlay maps: A new tool for research policy and library management. Journal of the American Society for Information Science and Technology 61(9), 871– 1887.