This map shows the geographic impact of Jan Tiessen'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 Jan Tiessen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jan Tiessen more than expected).
This network shows the impact of papers produced by Jan Tiessen. 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 Jan Tiessen. The network helps show where Jan Tiessen may publish in the future.
Co-authorship network of co-authors of Jan Tiessen
This figure shows the co-authorship network connecting the top 25 collaborators of Jan Tiessen.
A scholar is included among the top collaborators of Jan Tiessen 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 Jan Tiessen. Jan Tiessen 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.
Tiessen, Jan, et al.. (2014). Evaluation des Nationalen Aktionsplans der Bundesregierung zur Umsetzung der UN-Behindertenrechtskonvention: Abschlussbericht. Social Science Open Access Repository (GESIS – Leibniz Institute for the Social Sciences). 201.1 indexed citations
2.
Ismail, Sharif, Jan Tiessen, & Steven Wooding. (2012). Strengthening Research Portfolio Evaluation at the Medical Research Council: Developing a Survey for the Collection of Information About Research Outputs.. PubMed. 1(4). 15–15.1 indexed citations
3.
Tiessen, Jan, Priscillia Hunt, Mihály Fazekas, et al.. (2011). Assessing the Impacts of Revising the Tobacco Products Directive: Study to Support a DG SANCO Impact Assessment.. PubMed. 1(1). 13–13.9 indexed citations
4.
Tiessen, Jan, et al.. (2011). Evaluation of DG SANCO Data Management Practices.. PubMed. 1(3). 11–11.1 indexed citations
5.
Levitt, Ruth, et al.. (2010). Assessing the Impact of Arts and Humanities Research at the University of Cambridge. Technical Report..2 indexed citations
6.
Ismail, Sharif, Jan Tiessen, & Steven Wooding. (2010). Strengthening Research Portfolio Evaluation at the Medical Research Council.3 indexed citations
7.
Levitt, Ruth, et al.. (2010). Assessing the impact of arts and humanities research at the University of Cambridge.24 indexed citations
Rabinovich, Lila, et al.. (2009). The affordability of alcoholic beverages in the European Union: Understanding the link between alcohol affordability, consumption and harms.63 indexed citations
10.
Rabinovich, Lila, et al.. (2009). The affordability of alcoholic beverages in the European Union..30 indexed citations
Tiessen, Jan, Annalijn Conklin, Barbara Janta, et al.. (2008). Improving Organ Donation and Transplantation in the European Union: Assessing the Impacts of European Action.5 indexed citations
14.
Rabinovich, Lila, Jan Tiessen, Barbara Janta, et al.. (2008). Reducing Alcohol Harm. PsycEXTRA Dataset.1 indexed citations
15.
Hoorens, Stijn, Annalijn Conklin, & Jan Tiessen. (2008). Between politics and clinics -- the many faces of biomedical policy in Europe: Analysis of drivers and outcomes of Assisted Reproductive Technologies policy -- Volume I: Synthesis report.3 indexed citations
16.
Tiessen, Jan, Annalijn Conklin, Barbara Janta, et al.. (2008). Improving Organ Donation and Transplantation in the European Union.2 indexed citations
Jann, Werner, Kai Wegrich, & Jan Tiessen. (2007). Staatsmodernisierung "Bürokratisierung" und Bürokratieabbau im internationalen Vergleich - wo steht Deutschland?.
19.
Stolk, Christian Van, et al.. (2007). Student Retention in Higher Education Courses.16 indexed citations
20.
Jann, Werner, Kai Wegrich, & Jan Tiessen. (2006). "Burokratisierung" Und Burokratieabbau Im Internationalen Vergleich--wo Steht Deutschland? Studie Im Auftrag Der Friedrich-Ebert-Stiftung =.3 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.