Najko Jahn

535 total citations · 1 hit paper
31 papers, 226 citations indexed

About

Najko Jahn is a scholar working on Information Systems, Statistics, Probability and Uncertainty and Information Systems and Management. According to data from OpenAlex, Najko Jahn has authored 31 papers receiving a total of 226 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Information Systems, 15 papers in Statistics, Probability and Uncertainty and 10 papers in Information Systems and Management. Recurrent topics in Najko Jahn's work include scientometrics and bibliometrics research (15 papers), Research Data Management Practices (13 papers) and Academic Publishing and Open Access (8 papers). Najko Jahn is often cited by papers focused on scientometrics and bibliometrics research (15 papers), Research Data Management Practices (13 papers) and Academic Publishing and Open Access (8 papers). Najko Jahn collaborates with scholars based in Germany, Finland and Austria. Najko Jahn's co-authors include Lisa Matthias, Mikael Laakso, Philipp Mayr, Birgit Schmidt, Marion Schmidt, Wolfram Horstmann, Karthik Ram, Hao Zhu, Carl Boettiger and Scott Chamberlain and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientometrics and PeerJ.

In The Last Decade

Najko Jahn

27 papers receiving 212 citations

Hit Papers

Reference coverage analysis of OpenAlex compared to Web o... 2025 2026 2025 5 10 15
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Reference coverage analysis of OpenAlex compared to Web of Science and Scopus
    2025 18 citations Najko Jahn, Philipp Mayr et al. Scientometrics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Najko Jahn Germany 8 118 100 87 19 13 31 226
Paul Ayris United Kingdom 8 42 0.4× 127 1.3× 82 0.9× 7 0.4× 11 0.8× 44 238
Janneke Adema United Kingdom 9 49 0.4× 88 0.9× 28 0.3× 2 0.1× 24 1.8× 41 205
Nancy Fried Foster United States 5 99 0.8× 195 1.9× 53 0.6× 5 0.3× 19 1.5× 11 312
K.T. L. Vaughan United States 9 100 0.8× 199 2.0× 74 0.9× 16 1.2× 24 351
Deborah D. Blecic United States 13 101 0.9× 300 3.0× 52 0.6× 16 1.2× 19 419
Tina Chrzastowski United States 14 43 0.4× 294 2.9× 38 0.4× 2 0.1× 10 0.8× 37 363
john maccoll United Kingdom 8 69 0.6× 157 1.6× 45 0.5× 2 0.1× 17 1.3× 21 245
Christian Schloegl Austria 7 174 1.5× 142 1.4× 48 0.6× 1 0.1× 13 1.0× 10 314
Mayur Amin Netherlands 3 120 1.0× 66 0.7× 40 0.5× 1 0.1× 15 1.2× 5 218
Michael W. Carroll United States 10 42 0.4× 56 0.6× 44 0.5× 1 0.1× 14 1.1× 36 247

Countries citing papers authored by Najko Jahn

Since Specialization
Citations

This map shows the geographic impact of Najko Jahn's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Najko Jahn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Najko Jahn more than expected).

Fields of papers citing papers by Najko Jahn

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Najko Jahn. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Najko Jahn. The network helps show where Najko Jahn may publish in the future.

Co-authorship network of co-authors of Najko Jahn

This figure shows the co-authorship network connecting the top 25 collaborators of Najko Jahn. A scholar is included among the top collaborators of Najko Jahn based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Najko Jahn. Najko Jahn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
2.
Jahn, Najko, et al.. (2024). Understanding differences of the OA uptake within the German University landscape (2010–2020): Part 2—repository-provided OA. Scientometrics. 129(5). 2801–2825. 1 indexed citations
3.
Jahn, Najko, et al.. (2023). Understanding differences of the OA uptake within the German university landscape (2010–2020): part 1—journal-based OA. Scientometrics. 128(6). 3601–3625. 2 indexed citations
4.
Jahn, Najko, et al.. (2022). Stand und Perspektiven bibliometriegestützter Open-Access-Services an Universitäten in Deutschland. BIBLIOTHEK Forschung und Praxis. 46(2). 275–283. 2 indexed citations
5.
Jahn, Najko, et al.. (2022). Quantifying the influence of Open Access on innovation and patents. Open Research Europe. 2. 64–64. 4 indexed citations
6.
Jahn, Najko, et al.. (2022). HOAD: Data Analytics für mehr Transparenz bei Open-Access-Transformationsverträgen. GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen). 42(1). 64–69.
7.
Jahn, Najko, et al.. (2021). Entwicklung und Typologie des Datendiensts Unpaywall. BIBLIOTHEK Forschung und Praxis. 45(2). 293–303. 3 indexed citations
8.
Jahn, Najko, Lisa Matthias, & Mikael Laakso. (2021). Toward transparency of hybrid open access through publisher‐provided metadata: An article‐level study of Elsevier. Journal of the Association for Information Science and Technology. 73(1). 104–118. 15 indexed citations
9.
Jahn, Najko, et al.. (2021). Open access uptake in Germany 2010–2018: adoption in a diverse research landscape. Scientometrics. 126(12). 9751–9777. 14 indexed citations
10.
Laakso, Mikael, Lisa Matthias, & Najko Jahn. (2021). Open is not forever: A study of vanished open access journals. Refubium (Universitätsbibliothek der Freien Universität Berlin). 50 indexed citations
11.
Laakso, Mikael, Lisa Matthias, & Najko Jahn. (2021). Response to comment on “Open is not forever: A study of vanished open access journals”. Journal of the Association for Information Science and Technology. 72(9). 1115–1116.
12.
Schmidt, Birgit, et al.. (2018). Open Science Support as a Portfolio of Services and Projects: From Awareness to Engagement. Publications. 6(2). 27–27. 11 indexed citations
13.
Jahn, Najko, et al.. (2016). Neue Marktkonzentration? Eine Analyse der Open-Access-Kosten in Deutschland. PUB – Publications at Bielefeld University (Bielefeld University). 1 indexed citations
14.
Jahn, Najko, et al.. (2016). A study of institutional spending on open access publication fees in Germany. PeerJ. 4. e2323–e2323. 44 indexed citations
15.
Jahn, Najko, et al.. (2015). Research Information Systems At Universities And Research Institutions - Position Paper Of Dini Ag Fis. Zenodo (CERN European Organization for Nuclear Research). 3 indexed citations
16.
Jahn, Najko, et al.. (2013). PlosOpenR – Exploring FP7 funded PLOS publications. Information Services & Use. 33(2). 93–101. 1 indexed citations
17.
Jahn, Najko, et al.. (2010). Automatic Aggregation of Faculty Publications from Personal Web Pages. SHILAP Revista de lepidopterología.
18.
Horstmann, Wolfram & Najko Jahn. (2010). Persönliche Publikationslisten als hochschulweiter Dienst – Eine Bestandsaufnahme. BIBLIOTHEK Forschung und Praxis. 34(2). 2 indexed citations
19.
Jahn, Najko. (2008). Anthropological motivated usability evaluation. Library Hi Tech. 26(4). 606–621. 1 indexed citations
20.
Jahn, Najko. (2008). The methodological status of co-authorship networks. E-LIS Repository (University of Naples Federico II). 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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