This map shows the geographic impact of Josef Trna'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 Josef Trna with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Josef Trna more than expected).
This network shows the impact of papers produced by Josef Trna. 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 Josef Trna. The network helps show where Josef Trna may publish in the future.
Co-authorship network of co-authors of Josef Trna
This figure shows the co-authorship network connecting the top 25 collaborators of Josef Trna.
A scholar is included among the top collaborators of Josef Trna 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 Josef Trna. Josef Trna is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Trna, Josef, et al.. (2013). The Roles of Cartoons and Comics in Science Education. 240–244.7 indexed citations
9.
Trna, Josef. (2012). How to Motivate Science Teachers to Use Science Experiments. SHILAP Revista de lepidopterología.10 indexed citations
10.
Trna, Josef, et al.. (2012). Implementation of Inquiry-based Science Education into ScienceTeachers' Training. 2(4). 609–619.
11.
Trna, Josef, et al.. (2012). Development of Science and Technology Gifted Students throughInquiry-Based Science Education. 838–844.1 indexed citations
12.
Trna, Josef, et al.. (2011). Hands-on experimental activities in inquiry-based scienceeducation. 91–96.4 indexed citations
13.
Trna, Josef, et al.. (2010). Improvement of Science and Technology Literacy by means of ICT-Based Collaborative Action Research Including Hands-on Experiments. Contemporary Issues in Education Research (CIER). 1(2). 326–332.2 indexed citations
14.
Trna, Josef, et al.. (2010). ICT-based collaborative action research in science education. 68–70.11 indexed citations
15.
Trna, Josef & Petr Novák. (2009). THE EDUCATIONAL ROLES OF VIDEO PROGRAMS WITH EXPERIMENTS. 7. 45–7.1 indexed citations
16.
Trna, Josef, et al.. (2008). Učební úlohy ve výuce fyziky na 2. stupni základní školy: vybrané výsledky CPV videostudie fyziky. SHILAP Revista de lepidopterología.5 indexed citations
17.
Trna, Josef, et al.. (2007). Cognitive Motivation in Science Teacher Training. 277–284.6 indexed citations
18.
Trna, Josef. (2005). Nastává éra mezioborových didaktik. SHILAP Revista de lepidopterología. 15(1). 89–97.5 indexed citations
19.
Trna, Josef. (2005). Fyzika v jednoduchých pokusech. 167–171.1 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.