November 28, 2018. The paper Exploring topics of interest of Mendeley users by Zohreh Zahedi and Nees Jan van Eck has been published in volume 1, issue 1 of Journal of Altmetrics.
November 14, 2018. The paper Framing psychology as a discipline (1950-1999): A large-scale term co-occurrence analysis of scientific literature in psychology by Ivan Flis and Nees Jan van Eck has been published in volume 21, issue 4 of History of Psychology.
November 5, 2018. The paper Analyzing the activities of visitors of the Leiden Ranking website by Nees Jan van Eck and Ludo Waltman has been accepted for publication in Journal of Data and Information Science.
November 7, 2018. The paper Where are the breaks in translation from theory to clinical practice (and back) in addressing depression? An empirical graph-theoretic approach by Greg Siegle1, Angélique Cramer, Nees Jan van Eck, Philip Spinhoven, Steven Hollon, Johan Ormel, Marlene Strege, and Claudi Bockting has been accepted for publication in Psychological Medicine.
October 22, 2018. The paper From Louvain to Leiden: Guaranteeing well-connected communities by Vincent Traag, Ludo Waltman, and Nees Jan van Eck has been published in the arXiv. The paper is also discussed in a blog post. The source code of the Leiden algorithm is available on GitHub.
October 20, 2018. The paper Exploring topics of interest of Mendeley users by Zohreh Zahedi and Nees Jan van Eck has been accepted for publication in Journal of Altmetrics.
September 28, 2018. The slides of the presentation that I gave today at the Colloquium Research Information Systems and Science Classifications: Revisiting the NARCIS Classification in The Hague are available here.
September 4, 2018. The slides of the presentation that I gave today at the Workshop on Open Citations in Bologna are available here.
My research focuses primarily on the bibliometric mapping of scientific fields (various maps that I have constructed can be found here). I have written a PhD thesis on this topic. Another research interest that I have, which is somewhat separate from the rest of my work, is the construction and analysis of bibliometric performance indicators. In most of my research I am working closely together with Ludo Waltman.