Thed Van Leeuwen

Thed Van Leeuwen
Leiden University | LEI · Center for Science and Technology Studies

PhD in Quantitative Science Studies

About

146
Publications
36,554
Reads
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7,390
Citations
Additional affiliations
February 1989 - January 2016
Leiden University
Position
  • Senior Researcher

Publications

Publications (146)
Article
In this article, we study the development of the STS journal article format since the 1980s. Our analysis is based on quantitative data that suggest that the diversity of various journal publication types has diminished over the past four decades, while the format of research articles has become increasingly typified. We contextualize these histori...
Preprint
Evaluation systems have been long criticised for abusing and misusing bibliometric indicators. This has created a culture by which academics are constantly exposing their daily work to the standards they are expected to perform. In this study we investigate whether researchers’ own values and expectations are in line with the expectations of the ev...
Preprint
Full-text available
Gender differences in research productivity are well documented, and have been mostly explained by access parental leave and child-related responsibilities. Those explanations are based on the assumption that women take on the majority of childcare responsibilities, and take the same level of leave at the birth of a child. Changing social dynamics...
Article
ORCID is a scientific infrastructure created to solve the problem of author name ambiguity. Over the years ORCID has also become a useful source for studying academic activities reported by researchers. Our objective in this research was to use ORCID to analyze one of these research activities: the publication of datasets. We illustrate how the ide...
Preprint
Full-text available
ORCID is a scientific infrastructure created to solve the problem of author name ambiguity. Over the years ORCID has also become a useful source for studying academic activities reported by researchers. Our objective in this research was to use ORCID to analyze one of these research activities: the publication of datasets. We illustrate how the ide...
Article
Full-text available
As the COVID-19 pandemic unfolds, researchers from all disciplines are coming together and contributing their expertise. CORD-19, a dataset of COVID-19 and coronavirus publications, has been made available alongside calls to help mine the information it contains and to create tools to search it more effectively. We analyse the delineation of the pu...
Article
Full-text available
In this paper we briefly introduce the concept of Open Access and review the many variants that have been presented in the literature. We then critically examine how OA variants are presented by data source and how they are operationalized in practice. The goal of the paper is to provide a set of guidelines on how to effectively interpret OA inform...
Chapter
With the emergence of electronic publishing, the open access model, and the use of social media, the study of the publishing process in scholarly peer-reviewed journals has acquired importance as a research topic. However, these studies are based on relatively small samples of publications. In this study, the publications between 2000 and 2016 in E...
Article
Full-text available
The implementation of policies promoting the adoption of an open science (OS) culture must be accompanied by indicators that allow monitoring the uptake of such policies and their potential effects on research publishing and sharing practices. This study presents indicators of open access (OA) at the institutional level for universities worldwide....
Preprint
Full-text available
As the COVID-19 pandemic unfolds, researchers from all disciplines are coming together and contributing their expertise. CORD-19, a dataset of COVID-19 and coronavirus publications, has recently been published alongside calls to help mine the information it contains, and to create tools to search it more effectively. Here, we focus on the delineati...
Preprint
The implementation of policies promoting the adoption of an Open Science culture must be accompanied by indicators that allow monitoring the penetration of such policies and their potential effects on research publishing and sharing practices. This study presents indicators of Open Access (OA) penetration at the institutional level for universities...
Article
Full-text available
This paper examines the consequences of a culture of “personal ethics” when using new methodologies, such as the use of social media (SM) sites as a source of data for research. Using SM research as an example, this paper explores the practices of a number of actors and researchers within the “Ethics Ecosystem” which as a network governs ethically...
Article
Full-text available
Introduction Engagement of clinicians in research is important for the integration of science and clinical practice. However, at this moment, there is a shortage of clinician-scientists. Success experiences can stimulate student interest in a research career. Conducting actual research leading to publication is a potential method to gain success ex...
Preprint
Full-text available
This paper presents a first attempt to analyse Open Access integration at the institutional level. For this, we combine information from Unpaywall and the Leiden Ranking to offer basic OA indicators for universities. We calculate the overall number of Open Access publications for 930 universities worldwide. OA indicators are also disaggregated by g...
Article
In order to examine potential effects of methodological choices influencing developments in relative citation scores for countries, a fixed journal set comprising of 3232 journals continuously indexed in the Web of Science from 1981 to 2014 is constructed. From this restricted set, a citation database depicting the citing relations between the jour...
Preprint
Although only a small fraction of all scientific publications is retracted for misconduct, it has a profound impact on the research community, policy makers and the public at large. Indeed, over the last decades scientific integrity became a hot issue in science policy (Tchao, 2014). Moreover, papers retracted for fraud or other reasons should not...
Preprint
This paper reports the presence of a problematic “personal ethics” approach to decision making by social media scholars who use data from general audience social media platforms for their research. When new methodological tools like social media (SM) research are developed, differing norms of what constitutes ethically responsible research clash. M...
Preprint
Over the last years Open Access has been ranked very high on science policy agenda’s both internationally as well as nationally. This resulted in many national mandates and international guidelines on OA publishing of scientific results. One of the reasons OA has been pushed so strongly by science policy is found in the argument that what is financ...
Preprint
Open access mandates are setting standards on how to publish open access, as well as indicate the timeframe in which these goals are supposed to be reached. Parallel to the OA development, taken up both nationally as well supra-nationally, European and thus also Dutch academics are confronted with an increasing pressure to cooperate scientifically...
Article
Full-text available
We propose an operationalization of the rural and urban analogy introduced in Becher and Trowler (2001). According to them, a specialism is rural if it is organized into many, smaller topics of research, with higher author mobility among them, lower rate of collaboration and productivity, lower competition for resources and citation recognitions co...
Article
We review empirical research on (social) psychology of morality to identify which issues and relations are well documented by existing data and which areas of inquiry are in need of further empirical evidence. An electronic literature search yielded a total of 1,278 relevant research articles published from 1940 through 2017. These were subjected t...
Article
The surge in the number of authors per article in the biomedical field makes it difficult to quantify the contribution of individual authors. Conventional citation metrics are typically based on the number of publications and the number of citations generated by a scientist, thereby disregarding the contribution of co-authors. Previously we develop...
Chapter
Scientometrics is a type of corpus research which measures the scientific output of academic researchers and analyses underlying differences and inequalities among researchers based on their scientific outputs. This contribution discusses the history of the field since Eugene Garfield launched the Science Citation Index in 1963 and investigates its...
Article
In this article, we develop a method that uses altmetric data to analyse researchers' interactions, as a way of mapping the contexts of potential societal impact. In the face of an increasing policy demand for quantitative methodologies to assess societal impact, social media data (altmetrics) have been presented as a potential method to capture br...
Article
Full-text available
This article uses Google Scholar (GS) as a source of data to analyse Open Access (OA) levels across all countries and fields of research. All articles and reviews with a DOI and published in 2009 or 2014 and covered by the three main citation indexes in the Web of Science (2,269,022 documents) were selected for study. The links to freely available...
Preprint
Full-text available
We propose an operationalization of the rural and urban analogy introduced in Becher and Trowler [2001]. According to them, a specialism is rural if it is organized into many, smaller topics of research, with higher author mobility among them, lower rate of collaboration and productivity, lower competition for resources and citation recognitions co...
Preprint
Full-text available
The current ways in which documents are made freely accessible in the Web no longer adhere to the models established Budapest/Bethesda/Berlin (BBB) definitions of Open Access (OA). Since those definitions were established, OA-related terminology has expanded, trying to keep up with all the variants of OA publishing that are out there. However, the...
Preprint
The current ways in which documents are made freely accessible in the Web no longer adhere to the models established Budapest/Bethesda/Berlin (BBB) definitions of Open Access (OA). Since those definitions were established, OA-related terminology has expanded, trying to keep up with all the variants of OA publishing that are out there. However, the...
Conference Paper
Full-text available
The current ways in which documents are made freely accessible in the Web no longer adhere to the models established Budapest/Bethesda/Berlin (BBB) definitions of Open Access (OA). Since those definitions were established, OA-related terminology has expanded, trying to keep up with all the variants of OA publishing that are out there. However, the...
Article
Full-text available
This article1 describes the possibilities to analyze open access (OA) publishing in the Netherlands in an international comparative way. OA publishing is now actively stimulated by Dutch science policy, similar to the United Kingdom. We conducted a bibliometric baseline measurement to assess the current situation, to be able to measure developments...
Preprint
This article uses Google Scholar (GS) as a source of data to analyse Open Access (OA) levels across all countries and fields of research. All articles and reviews with a DOI and published in 2009 or 2014 and covered by the three main citation indexes in the Web of Science (2,269,022 documents) were selected for study. The links to freely available...
Article
Full-text available
One of the notable features of undone science debates is how formation of new interest groups becomes pivotal in mobilizing and championing emerging research on undone topics. Clearly money is one of the most important mediums through which different types of actors can support and steer scientists to work on undone topics. Yet which actors are mor...
Article
Full-text available
In the last couple of years, the role of Open Access (OA) publishing has become central in science management and research policy. In the UK and the Netherlands, national OA mandates require the scientific community to seriously consider publishing research outputs in OA forms. At the same time, other elements of Open Science are becoming also part...
Article
This article examines dynamics of knowledge production and discourses of basic-applied science and relevance at the Swedish Institute for Surface Chemistry, a semi-public industrially oriented research institute, from 1980 to 2005. We employ a three-pronged method, consisting of (1) an analysis of how the institute articulated its research prioriti...
Article
Full-text available
In this article, we present the results of an analysis that describes the research centered on Journal Impact Factors (JIFs). The purpose of the analysis is to make a start of studying part of the field of quantitative science studies that relates to the most famous and classic bibliometric indicator around and to see what characteristics apply to...
Technical Report
Full-text available
Combining results from bibliometric analyses, a global sample of researcher opinions and case-study interviews, a new report reveals that although the benefits of open research data are well known, in practice, confusion remains within the researcher community around when and how to share research data. The report, Open Data: The Researcher Perspe...
Article
Full-text available
Osteosarcoma is a primary malignant bone tumour, for which no improvement in survival rate has been made since the nineteen seventies. We set out to systemically identify the in vitro studies performed in the past two decades describing potential future therapies. Strikingly, we obtained a total of 5282 PubMed hits on this subject. The amount of pu...
Article
Full-text available
In this article, we develop a method that uses altmetric data to analyse researchers' interactions, as a way of mapping the contexts of potential societal impact. In the face of an increasing policy demand for quantitative methodologies to assess societal impact, social media data (altmetrics) has been presented as a potential method to capture bro...
Article
Knowledge dissemination in the social sciences and humanities (SSH) is characterized by an assorted set of publication channels and a more prevalent use of local languages, so international bibliographic databases do not provide a practical study source by themselves. This article aims at laying the foundations for a comprehensive study of the rese...
Article
Full-text available
We investigate methodological problems in measuring research productivity on the national level by comparing official R&D statistics from the OECD with publication data from the Web of Science. Data from 18 countries are analysed. The paper problematizes the approach taken in studies where R&D statistics are used as an input variable and publicatio...
Article
Full-text available
Current evaluation frameworks in research policy were designed to address: 1) life and natural sciences, 2) global research communities, and; 3) scientific impact. This is problematic, as they do not adapt well to SSH scholarship, to local interests, or to consider broader societal impacts. This paper discusses three different evaluation frameworks...
Article
Full-text available
Biomedical scientific research in the Netherlands has a good reputation worldwide. Quantitatively, the university medical centres (UMCs) deliver about 40 % of the total number of scientific publications of this research. Analysis of the bibliometric output data of the UMCs shows that their research is highly cited. These output-based analyses also...
Article
In this paper, we report on the application of Google Scholar (GS)-based metrics in the formal assessment of research programs. Involved were programs in the fields of Education, Pedagogical Sciences, and Anthropology in The Netherlands. Also, a comparative analysis has been conducted of the results based on GS and Web of Science (WoS). Studies cri...
Article
Full-text available
In this study we combine the registered output of a whole university in the Netherlands with data retrieved from the Web of Science. The initial research question was: is it possible to show the impact of the university in its’ full broadness, taking into account the variety of disciplines covered in the research profile of the university? In order...
Research
Full-text available
This paper presents the results of a combined study to the research performance of the Dutch Leiden-based National Museum of Natural History Naturalis, in the context of the global changing position of museums in the open scientifi c literature. In the Netherlands, the museums are stimulated to create a research portfolio, an initiative which has m...
Article
The fifth Millennium Development Goal formulated by the WHO in 2000 aimed to reduce global maternal mortality by 75% in 2015. We studied the extent to which medical research has supported this by studying maternal mortality. We performed a bibliometric analysis of the literature on maternal mortality and of the development of this literature over t...
Article
Full-text available
Background: The UK, like some other countries, carries out a periodic review of research quality in universities and the most recent Research Excellence Framework (REF) reported a doubling (103% increase) in its "world leading" or so-called "4*" research outputs in the areas of life sciences and medicine between 2008 and 2014. This is a remarkable...
Conference Paper
Full-text available
Scientific activity of Social Sciences and Humanities researcher’s comprises an assorted set of publication channels such as books, book chapters and national and international journal articles. Since knowledge dissemination in the field is characterised by a greater use of national journals and local languages, international bibliographic database...
Article
Full-text available
The Relative Specialization Index (RSI) is an indicator that measures the research profile of a country by comparing the share of a given field in the publications of a given country with the share of the same field in the world total of publications. If measured over time, this indicator may be influenced in the world total by the increased repres...
Article
We present main results from the bibliometric part of a recent evaluation of two different postdoctoral (postdoc)-funding instruments used in Denmark. We scrutinize the results for robustness, stability, and importance, and eventually come out questioning the official conclusions inferred from these results. Acknowledging the deficiencies of non-ra...
Article
Most of the biomedical research is performed in University Medical Centers (UMC's). Increasingly, however, biomedical research is also done in non-academic large teaching hospitals, united in the Organization for Topclinical Hospitals (STZ) in the Netherlands. The objective of this study was to compare citation scores of biomedical publications fro...
Article
In this study an analysis of the effects of the different types of durability on the bibliometric performance at the group level is presented. The scientific production during the period of 1991–2000 of a set of 158 Dutch research groups in chemistry is studied considering several bibliometric indicators in the perspective of the durability of the...
Article
Full-text available
In this study, the possibilities to extend the basis for research performance exercises with editorial material are explored. While this document type has been traditionally not considered as an important type of scientific communication in research performance assessment procedures, there is a perception from researchers that editorial materials s...
Article
Full-text available
This paper presents results from a study on two main issues in many bibliometric studies, namely language of publications and coverage issues. While these two phenomena are hardly considered as probelmatic in most bibliometric analyses in the life sciences, the natural sciences and biomedicine, these two topics do play a role while discussing the a...
Article
In this paper we present the results of an analysis that describes the research centred on journal impact factors. The purpose of the analysis is to make a start of studying part of the field of quantitative science studies that relates to the most famous bibliometric indicator around, and see what characteristics apply to the research on journal i...
Article
The Leiden Ranking 2011/2012 is a ranking of universities based on bibliometric indicators of publication output, citation impact, and scientific collaboration. The ranking includes 500 major universities from 41 different countries. This paper provides an extensive discussion of the Leiden Ranking 2011/2012. The ranking is compared with other glob...
Article
This study presents an analysis of the use of bibliographic references by individual scientists in three different research areas. The number and type of references that scientists include in their papers are analyzed, the relationship between the number of references and different impact-based indicators is studied from a multivariable perspective...