From: "Neijssel, M." <[log in to unmask]> Date: Wed, 17 Apr 2013 16:58:20 +0200 Dear madam or sir, Today, CWTS Leiden University launches the Leiden Ranking 2013. The ranking measures the scientific performance of 500 major universities worldwide, using a sophisticated set of bibliometric indicators. It is presented via an intuitive and user-friendly website interface: www.leidenranking.com. CWTS takes great care in providing accurate ranking by thoroughly cleaning address data, unifying institute names and ensuring the completeness of the scientific output. The Leiden Ranking 2013 feature highlights Source normalization is a new CWTS-developed approach that has the advantage of being independent of classification systems that organize publications or journals into fields. This approach corrects for field differences by analyzing referencing behaviour at the level of individual publications. This new version of the ranking offers the option to compare scientific performance among universities over 5 broad scientific disciplines in the following dimensions: impact, output and collaboration. Sincerely, Mark Neijssel M.Sc. Sales Director CWTS B.V. PO Box 905 2300 AX Leiden The Netherlands Visiting Address Willem Einthoven Building Wassenaarseweg 62A 2333 AL Leiden The Netherlands www.cwts.nl www.leidenranking.com www.vosviewer.com