The Journal Observatory - Connecting information on scholarly communication

As scholarly communication is getting more diverse and transparent, there is an increasing need for reliable information on platforms’ policies. The Journal Observatory project aims to connect existing data and build toward systematic high-quality information on scholarly communication platforms.

Bram van den Boomen, Nees Jan van Eck, Ludo Waltman, Tony Ross-Hellauer and Serge Horbach • May 01, 2023

Take responsibility for social media

With many former Twitter users looking for alternatives, the decentralised Mastodon platform is on the rise. But decentralisation alone is not enough: institutions should take responsibility and host their own Mastodon server.

Vincent Traag, Jonathan Dudek, Eleonora Dagiene, Nees Jan van Eck and Rodrigo Costas • December 07, 2022 • 4 comments

The growth of open peer review

The closed nature of the traditional journal peer review system is often criticized. Over the past two decades, significant efforts have been made to make peer review more open. Ludo Waltman and Nees Jan van Eck use data from Crossref to analyze the growth of open peer review.

Ludo Waltman and Nees Jan van Eck • July 06, 2022

A first step in quantifying disagreement across science

Disagreement is ubiquitous in science and maybe even necessary for progress. We leverage recent advances in data to develop a method for quantifying disagreement, revealing the complexity of disagreement across science.

Wout Lamers, Kevin Boyack, Vincent Larivière, Cassidy R. Sugimoto, Nees Jan van Eck, Ludo Waltman and Dakota Murray • January 19, 2022

VOSviewer goes online! (Part 2)

Last week, CWTS colleagues Nees Jan van Eck and Ludo Waltman published a post in which they announced the launch of VOSviewer Online. Today, they discuss a new update of the regular stand-alone VOSviewer tool, offering additional possibilities for making VOSviewer visualizations available online.

Nees Jan van Eck and Ludo Waltman • July 22, 2021

VOSviewer goes online! (Part 1)

Today, the new VOSviewer Online software was released by CWTS colleagues Nees Jan van Eck and Ludo Waltman. In this post, they discuss the possibilities offered by the software.

Nees Jan van Eck and Ludo Waltman • July 16, 2021

Bona Fide Journals - Creating a predatory-free academic publishing environment

Predatory journals pose a significant problem to academic publishing. In the past, a number of attempts have been made to identify them. This blog post presents a novel approach towards a predatory-free academic publishing landscape: Bona Fide Journals.

Leo Waaijers, Ludo Waltman, Saskia de Vries, Thed van Leeuwen and Nees Jan van Eck • March 02, 2021 • 3 comments

The CWTS Leiden Ranking 2020

At CWTS, we have just released a new edition of our Leiden Ranking. In this post, the core members of the Leiden Ranking team provide a quick update and illustrate some of the insights provided by the ranking.

Ludo Waltman, Zeynep Anli, Clara Calero-Medina, Mark Neijssel, Andrea Reyes Elizondo, Nees Jan van Eck and Martijn Visser • July 08, 2020

Comparing bibliographic data sources: Q&A

Last week CWTS researchers Martijn Visser, Nees Jan van Eck, and Ludo Waltman published the paper 'Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic'. In this post, the authors answer ten questions about their work.

Martijn Visser, Nees Jan van Eck and Ludo Waltman • May 29, 2020

Nees Jan van Eck

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