Dimity Stephen

Dr. Dimity Stephen

Research Area Research System and Science Dynamics
Researcher
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Dr. Dimity Stephen completed her undergraduate studies in psychology at Queensland University of Technology in Brisbane, Australia. She worked at the Australian Bureau of Statistics analysing causes of mortality from 2010 to 2017. She completed her doctoral thesis in public health in 2017 at Queensland University of Technology. She has been working in the Competence Centre for Bibliometrics at the German Centre for Higher Education Research and Science Studies (DZHW) in Berlin since July 2018.

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Projects

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Predatory Publishing Practices: Paper tigers or actual threats from evaluation systems?
Competence Network for Bibliometrics
Publications

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Assessing bibliodiversity through reference lists: A text analysis approach.

Cruz Romero, R., Stephen, D., & Stahlschmidt, S. (2024).
Assessing bibliodiversity through reference lists: A text analysis approach. In STI2024 (Hrsg.), Proceedings of the 28th International Conference on Science, Technology and Innovation Indicators (STI2024) (S. 1-14). Berlin: STI2024. https://doi.org/10.5281/zenodo.14045592
Abstract

The presence or absence of publishers in large bibliographic databases highlights tangible and symbolic differences between small and large publishers, underlining their diverging incentive structures. To assess these differences, this contribution explores reference data from small (open access) publishers and their journals in the Web of Science and Scopus. The analysis focuses on references that are not indexed in these databases and examines them from a text-as-data approach. The study frames two dimensions of relevance - visibility and impact - as proxies for assessing the scholarly bibliodiversity represented by small (open access) publishers.

Contrasting cross-correlation: Meta-analyses of the associations between citations and 13 altmetrics, incorporating moderating variables.

Stephen, D., & Stahlschmidt, S. (2024).
Contrasting cross-correlation: Meta-analyses of the associations between citations and 13 altmetrics, incorporating moderating variables. Scientometrics (online first).

Mind the gap: Nowcasting the citation impact of research institutions.

Stahlschmidt, S., & Stephen, D. (2023).
Mind the gap: Nowcasting the citation impact of research institutions. In ISSI (Hrsg.), Proceedings of ISSI 2023 – the 19th International Conference of the International Society for Scientometrics and Informetrics (S. 441-447). Bloomington, United States: International Society for Scientometrics and Informetrics.

Distinguishing articles in questionable and non-questionable journals using quantitative indicators associated with quality.

Stephen, D. (2023).
Distinguishing articles in questionable and non-questionable journals using quantitative indicators associated with quality. In L. Waltman, K. H. Lai, B. Murat, J. Wang, V. Weimer, E. Noyons, & M. Luwel (Hrsg.), 27th International Conference on Science, Technology and Innovation Indicators (STI 2023). Leiden, Netherlands: orvium.io. https://doi.org/10.55835/644245cb8e703ddb4dc07eda

Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics.

Stephen, D., & Stahlschmidt, S. (2023).
Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics. In ISSI (Hrsg.), Proceedings of ISSI 2023 – the 19th International Conference of the International Society for Scientometrics and Informetrics (S. 449-454). Bloomington, United States: International Society for Scientometrics and Informetrics.

Medical articles in questionable journals are less impactful than those in non-questionable journals but still extensively cited.

Stephen, D. (2023).
Medical articles in questionable journals are less impactful than those in non-questionable journals but still extensively cited. Scientometrics. https://doi.org/10.1007/s11192-023-04763-w

Landscape study of small journal publishers for the Knowledge Exchange Task & Finish Group for " Small Publishers and the Transition to Open Access " .

Stephen, D., & Stahlschmidt, S. (2022).
Landscape study of small journal publishers for the Knowledge Exchange Task & Finish Group for "Small Publishers and the Transition to Open Access". Berlin: DZHW.

Comparison of the citations of German medical science articles in questionable and non-questionable journals.

Stephen, D. (2022).
Comparison of the citations of German medical science articles in questionable and non-questionable journals. Proceedings of the 26th International Conference on Science, Technology and Innovation Indicators (STI 2022), 1-8. https://doi.org/10.5281/zenodo.6975638

Peer reviewers equally critique theory, method, and writing, with limited effect on the final content of accepted manuscripts.

Stephen, D. (2022).
Peer reviewers equally critique theory, method, and writing, with limited effect on the final content of accepted manuscripts. Scientometrics (online first). https://doi.org/10.1007/s11192-022-04357-y

From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers.

Stahlschmidt, S., & Stephen, D. (2022).
From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers. Scientometrics, 2022(127), 2413-2431. https://doi.org/10.1007/s11192-022-04309-6

Performance and Structures of the German Science System 2022. Studien zum deutschen Innovationssystem.

Stephen, D., & Stahlschmidt, S. (2022).
Performance and Structures of the German Science System 2022. Studien zum deutschen Innovationssystem. Berlin: Expertenkommission Forschung und Innovation (EFI).

A study of referencing changes in preprint-publication pairs across multiple fields.

Akbaritabar, A., Stephen, D., & Squazzoni, F. (2022).
A study of referencing changes in preprint-publication pairs across multiple fields. Journal of Informetrics, 16(2), 101258 (online first). https://doi.org/10.1016/j.joi.2022.101258

Gastbeitrag: Zur bibliometrischen Messung der internationalen Wissenschaftlermobilität.

Stephen, D., & Stahlschmidt, S. (2021).
Gastbeitrag: Zur bibliometrischen Messung der internationalen Wissenschaftlermobilität. Wissenschaft Weltoffen: Daten und Fakten zur Internationalität von Studium und Forschung in Deutschland und weltweit 2021. Deutschland: Deutscher Akademischer Austauschdienst und Deutsches Zentrum für Hochschul- und Wissenschaftsforschung.

Differences between Web of Science, Scopus, and Dimensions in structure and citation networks affect German sectors’ normalised citation impact.

Stahlschmidt, S., & Stephen, D. (2021).
Differences between Web of Science, Scopus, and Dimensions in structure and citation networks affect German sectors’ normalised citation impact. In W. Glänzel, S. Heeffer, P.-S. Chi, & R. Rosseau (Hrsg.), Proceedings of the 18th International Conference on Scientometrics and Informetrics (S. 1051-1062). Leuven: KU Leuven / International Society for Scientometrics and Informetrics (I.S.S.I.).

From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers.

Stahlschmidt, S., & Stephen, D. (2021).
From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers. Ithaca: arXiv.
Presentations

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Assessing Bibliodiversity through Reference Lists: A Text Analysis Approach.

Cruz Romero, R., Stephen, D., & Stahlschmidt, S. (2024, September).
Assessing Bibliodiversity through Reference Lists: A Text Analysis Approach. Vortrag auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators 2024 (STI), Berlin.

28th International Conference on Science, Technology and Innovation Indicators (STI2024).

Frietsch, R., Gauch, S., Hinze, S., Stephen, D., Jacobs, N., ... & Beck, P. (2024, September).
28th International Conference on Science, Technology and Innovation Indicators (STI2024), Fraunhofer ISI, Humboldt-Universität zu Berlin, DZHW, European Network of Idicator Developers, Berlin.

Improving Transparency and Quality of Bibliometric Methods and Reporting.

Haustein, S., Ng, J. Y., Stephen, D., Schniedermann, A., Stahlschmidt, S., ... & Glänzel, W. (2024, September).
Session Improving Transparency and Quality of Bibliometric Methods and Reporting auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators 2024 (STI), Berlin, Germany.

Do we have a reporting issue? First results from analysing peer reviews.

Stephen, D. (2024, September).
Do we have a reporting issue? First results from analysing peer reviews. Vortrag auf dem Workshop Improving transparency and quality of bibliometric methods and reporting. Special Session at the 28th International Conference on Science, Technology and Innovation Indicators (STI2024), Berlin, Germany.

Journals and their characteristics.

Stephen, D. (2024, September).
Journals and their characteristics. Vortrag auf der Summer School european summer school for scientometrics (esss2024), Vienna, Austria.

Mind the gap: Nowcasting the citation impact of research institutions.

Stahlschmidt, S., & Stephen, D. (2023, November).
Mind the gap: Nowcasting the citation impact of research institutions. Vortrag auf dem Kolloquium Departamento de Información y Comunicación, Universidad de Granada, Granada, Spanien.

Neue Daten, neues Wissen? Infrastrukturen der Leistungsbewertung in der Wissenschaft (NeDa).

Stephen, D. (2023, Oktober).
Neue Daten, neues Wissen? Infrastrukturen der Leistungsbewertung in der Wissenschaft (NeDa). Vortrag auf dem Workshop Abschlusstagung der BMBF-Förderlinie Qualitätsentwicklung(en) in der Wissenschaft, Dortmund.

Distinguishing articles in questionable and non-questionable journals using quantitative indicators associated with quality.

Stephen, D. (2023, Juli).
Distinguishing articles in questionable and non-questionable journals using quantitative indicators associated with quality. Vortrag auf der Konferenz 27th International Conference on Science, Technology and Innovation Indicators (STI), Leiden, Niederlande.

Mind the gap: Nowcasting the citation impact of research institutions.

Stahlschmidt, S., & Stephen, D. (2023, Juli).
Mind the gap: Nowcasting the citation impact of research institutions. Vortrag auf der Konferenz International Conference on Scientometrics and Informetrics (ISSI2023), Indiana University, Bloomington, USA.

Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics.

Stephen, D., & Stahlschmidt, S. (2023, Juli).
Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics. Vortrag auf der Konferenz 19th International Conference on Scientometrics and Infometrics, Indiana University, Bloomington, Indiana, USA.

Comparison of the citations of German medical science articles in questionable and non-questionable journals.

Stephen, D. (2022, September).
Comparison of the citations of German medical science articles in questionable and non-questionable journals. Vortrag auf der Konferenz 26th International Conference on Science, Technology and Innovation Indicators (STI), Granada, Spain.

Results of the bibliometric monitoring pilot study for the Berlin University Alliance.

Stephen, D., & Donner, P. (2022, März).
Results of the bibliometric monitoring pilot study for the Berlin University Alliance. Vortrag im Rahmen des Kolloquiums Berlin University Alliance auf dem Kolloquium Objective 3 - Advancing Research Quality and Value of the Berlin University Alliance.

Germany in the international science system: Findings from annual EFI report series.

Stephen, D., & Stahlschmidt, S. (2022, Januar).
Germany in the international science system: Findings from annual EFI report series. Vortrag auf dem Seminar OST-KB Scientometric Joint Seminar, Haut Conseil de l’évaluation de la recherche et de l’enseignement supérieur, Observatoire des sciences et techniques (OST).

Robust measurement of Scientific Mobility: (Dis-)Agreement between Author and Publisher Information.

Stephen, D., & Stahlschmidt, S. (2022, Januar).
Robust measurement of Scientific Mobility: (Dis-)Agreement between Author and Publisher Information. Vortrag auf dem Seminar OST-KB Scientometric Joint Seminar, Haut Conseil de l’évaluation de la recherche et de l’enseignement supérieur, Observatoire des sciences et techniques (OST).

A comparative analysis of international scientist mobility between data sources and measurement pathways.

Stephen, D., & Stahlschmidt, S. (2021, November).
A comparative analysis of international scientist mobility between data sources and measurement pathways. Vortrag auf der Konferenz Nordic Workshops on Bibliometrics and Research Policy 2021 (NWB2021), University of Southern Denmark, Odense, Denmark.