***** To join INSNA, visit http://www.insna.org ***** Global Maps of Science based on the new Web-of-Science Categories http://arxiv.org/abs/1202.1914 In August 2011, Thomson Reuters launched version 5 of the Science and Social Science Citation Index in the Web of Science (WoS). Among other things, the 222 ISI Subject Categories (SCs) for these two databases in version 4 of WoS were renamed and extended to 225 WoS Categories (WCs). Since we previously used the ISI SCs as the baseline for a global map in Pajek (Rafols et al., 2010) and brought this facility online (at http://www.leydesdorff.net/overlaytoolkit), we recalibrated this map for the new WC categories using the Journal Citation Reports 2010. In addition to Pajek, the new base maps can also be made using VOSviewer (Van Eck & Waltman, 2010). Loet Leydesdorff, Stephen Carley, Ismael Rafols ** apologies for cross postings ________________________________________ Amsterdam School of Communications Research (ASCoR) Kloveniersburgwal 48, 1012 CX Amsterdam. Tel. +31-20-525 6598; fax: +31-842239111 [log in to unmask] ; http://www.leydesdorff.net/ Visiting Professor, ISTIC, Beijing; Honorary Fellow, SPRU, University of Sussex; http://scholar.google.com/citations?user=ych9gNYAAAAJ&hl=en _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.