This map shows the geographic impact of Ralf Tönjes'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 Ralf Tönjes with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ralf Tönjes more than expected).
This network shows the impact of papers produced by Ralf Tönjes. 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 Ralf Tönjes. The network helps show where Ralf Tönjes may publish in the future.
Co-authorship network of co-authors of Ralf Tönjes
This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Tönjes.
A scholar is included among the top collaborators of Ralf Tönjes 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 Ralf Tönjes. Ralf Tönjes is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Tönjes, Ralf, et al.. (2015). Anbindung von ISOBUS-Geräten an ein online Precision Farming System.. Library Osnabrück University (Hochschule Osnabrück). 89–92.
9.
Tönjes, Ralf, et al.. (2013). Test derivation for semantically described IoT services. Future Network & Mobile Summit. 1–10.6 indexed citations
10.
Tönjes, Ralf, et al.. (2012). A test-driven approach for life cycle management of internet of things enabled services. Surrey Research Insight Open Access (The University of Surrey). 1–8.5 indexed citations
11.
Tönjes, Ralf, et al.. (2012). Test Driven Life Cycle Management for Internet of Things based Services: a Semantic Approach.1 indexed citations
12.
Tönjes, Ralf, et al.. (2011). Performance evaluation of a generic driver for medical Bluetooth sensors. Future Network & Mobile Summit. 1–8.1 indexed citations
13.
Kiani, Saad Liaquat, et al.. (2011). Survey on evaluation of context provisioning middleware. UWE Research Repository (UWE Bristol).4 indexed citations
Tönjes, Ralf, Klaus Moessner, Thorsten Lohmar, & Michael Wolf. (2002). OverDRiVE -- Spectrum Efficient Multicast Services to Vehicles.9 indexed citations
18.
Tönjes, Ralf. (2001). Wissensbasierte Interpretation und 3D-Rekonstruktion von Landschaftsszenen aus Luftbildern.. Künstliche Intell.. 15. 39–40.5 indexed citations
19.
Tönjes, Ralf, et al.. (1998). 3D Visualization and Exploration of Remote Sensing Data. 455–465.2 indexed citations
20.
Tönjes, Ralf, et al.. (1997). Knowledge Based Interpretation of Aerial Images and Maps Using a Digital Landscape Model as Partial Interpretation.6 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.