A5054110683- scientometrics and bibliometrics research
- Research Data Management Practices
- Web visibility and informetrics
- Health and Medical Research Impacts
- Meta-analysis and systematic reviews
- Academic Publishing and Open Access
- Intellectual Capital and Performance Analysis
- Evaluation and Performance Assessment
- Innovation and Knowledge Management
- Higher Education Governance and Development
- Innovation Policy and R&D
- Complex Network Analysis Techniques
- Academic Writing and Publishing
- Innovations in Medical Education
- Diversity and Career in Medicine
- Wikis in Education and Collaboration
- Data Quality and Management
- Interdisciplinary Research and Collaboration
- Private Equity and Venture Capital
- Open Source Software Innovations
- Online Learning and Analytics
- Scientific Computing and Data Management
- Intellectual Property and Patents
- Global Health and Surgery
- Academic integrity and plagiarism
Leiden University
2015-2024
Scientific Computing & Modelling (Netherlands)
2024
Leiden University Medical Center
2019
University of Amsterdam
2019
Maastricht University Medical Centre
2019
King's College London
2019
Universidad de Granada
2018
Stellenbosch University
2018
Centro de Ciencias Humanas y Sociales
2010
Centre for Science and Environment
2005
The Leiden Ranking 2011/2012 is a ranking of universities based on bibliometric indicators publication output, citation impact, and scientific collaboration. includes 500 major from 41 different countries. This paper provides an extensive discussion the 2011/2012. compared with other global university rankings, in particular Academic World Universities (commonly known as Shanghai Ranking) Times Higher Education University Rankings. comparison focuses methodological choices underlying...
We present an empirical comparison between two normalization mechanisms for citation-based indicators of research performance. These aim to normalize citation counts the field and year in which a publication was published. One mechanism is applied current so-called crown indicator our institute. The other new that institute currently exploring. find at high aggregation levels, such as level large institutions or countries, differences are very small. At lower groups journals, somewhat...
The Institute for Scientific Information (ISI) publishes annually listings of impact factors scientific journals, based upon data extracted from the Science Citation Index (SCI). factor a journal is defined as average number citations given in specific year to documents published that two preceding years, divided by "citable" those 2 years. This article presents evidence considerable journals values ISI's Journal Reports (JCR) are inaccurate, particularly several having high factor....
Abstract The authors set forth a general methodology for conducting bibliometric analyses at the micro level. It combines several indicators grouped into three factors or dimensions, which characterize different aspects of scientific performance. Different profiles “classes” scientists are described according to their research performance in each dimension. A series results based on findings from application this study Spanish National Research Council Spain thematic areas presented. Special...
This paper focuses on the study of self-citations at meso and micro (individual) levels, basis an analysis production (1994-2004) individual researchers working Spanish CSIC in areas Biology Biomedicine Material Sciences. Two different types are described: author (citations received from him/herself) co-author researchers' co-authors but without his/her participation). Self-citations do not play a decisive role high citation scores documents either or level, which mainly due to external...
Understanding the role of acknowledgments given by researchers in their publications has been a recurrent challenge bibliometric field, but relatively unexplored until now. This study presents general analysis on new “funding acknowledgment” (FA) information available W eb S cience. All covered database 2009 have analyzed. The presence and length FA text, as well “peer interactive communication” acknowledgments, are related to impact indicators, distribution papers fields, countries authors,...
In this paper, we report on the application of Google Scholar (GS)-based metrics in formal assessment research programs. Involved were programs fields Education, Pedagogical Sciences, and Anthropology The Netherlands. Also, a comparative analysis has been conducted results based GS Web Science (WoS). Studies critical point at its reliability data. We show how data for bibliometric can be improved by excluding non-verifiable citing sources from full second-order study background these...
The implementation of policies promoting the adoption an open science (OS) culture must be accompanied by indicators that allow monitoring uptake such and their potential effects on research publishing sharing practices. This study presents access (OA) at institutional level for universities worldwide. By combining data from Web Science, Unpaywall Leiden Ranking disambiguation institutions, we track OA coverage universities’ output 963 institutions. paper methodological challenges,...
As the COVID-19 pandemic unfolds, researchers from all disciplines are coming together and contributing their expertise. CORD-19, a dataset of coronavirus publications, has been made available alongside calls to help mine information it contains create tools search more effectively. We analyse delineation publications included in CORD-19 scientometric perspective. Based on comparison Web Science database, we find that provides an almost complete coverage research coronaviruses. not only...
The state of open science needs to be monitored track changes over time and identify areas create interventions drive improvements. In order monitor practices, they first need well defined operationalized. To reach consensus on what practices at biomedical research institutions, we conducted a modified 3-round Delphi study. Participants were administrators, researchers, specialists in dedicated roles, librarians. rounds 1 2, participants completed an online survey evaluating set potential...
We applied a set of standard bibliometric indicators to monitor the scientific state-of-arte 500 universities worldwide and constructed ranking on basis these (Leiden Ranking 2010). find dramatic hitherto largely underestimated language effect in bibliometric, citation-based measurements research performance when comparing based all Web Science (WoS) covered publications only English WoS publications, particularly for Germany France.
Journal Article Benchmarking university-industry research cooperation worldwide: performance measurements and indicators based on co-authorship data for the world's largest universities Get access Robert J W Tijssen, Tijssen Search other works by this author on: Oxford Academic Google Scholar Thed N van Leeuwen, Leeuwen Erik Wijk Research Evaluation, Volume 18, Issue 1, March 2009, Pages 13–24, https://doi.org/10.3152/095820209X393145 Published: 01 2009