This map shows the geographic impact of Trevor Barker'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 Trevor Barker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Trevor Barker more than expected).
This network shows the impact of papers produced by Trevor Barker. 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 Trevor Barker. The network helps show where Trevor Barker may publish in the future.
Co-authorship network of co-authors of Trevor Barker
This figure shows the co-authorship network connecting the top 25 collaborators of Trevor Barker.
A scholar is included among the top collaborators of Trevor Barker 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 Trevor Barker. Trevor Barker is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ullah, Abrar, Hannan Xiao, Mariana Lilley, & Trevor Barker. (2012). Usability of profile based student authentication and traffic light system in online examinations. International Conference for Internet Technology and Secured Transactions. 220–225.7 indexed citations
12.
Barker, Trevor. (2011). An Automated Individual Feedback and Marking System: An Empirical Study.. The Electronic Journal of e-Learning. 9(1). 1–14.11 indexed citations
13.
Barker, Trevor. (2008). Computer Adaptive Testing in Higher Education : The Validity and Reliability of the approach. Loughborough University Institutional Repository (Loughborough University).2 indexed citations
14.
Barker, Trevor & Stella Lee. (2007). The verification of identity in online assessment: a comparison of methods. Loughborough University Institutional Repository (Loughborough University). 63 Suppl 9. 55–60.1 indexed citations
15.
Lilley, Mariana & Trevor Barker. (2007). Students' perceived usefulness of formative feedback for a computer-adaptive test. The Electronic Journal of e-Learning. 5(1). 31–38.6 indexed citations
16.
Barker, Trevor, et al.. (2004). RESPONSE OF A WINTERING MOOSE POPULATION TO ACCESS MANAGEMENT AND NO HUNTING - A MANITOBA EXPERIMENT. 40. 87–94.5 indexed citations
17.
Britton, Carol, et al.. (2003). Investigating the Influence of Structure on User Performance with UML Interaction Diagrams. University of Hertfordshire Research Archive (University of Hertfordshire). 18.2 indexed citations
18.
Britton, Carol, et al.. (2002). A comparison of empirical study and cognitive dimensions analysis in the evaluation of UML diagrams. University of Hertfordshire Research Archive (University of Hertfordshire). 1.18 indexed citations
Barker, Trevor, et al.. (1999). Investigation into the effect of language on performance in a multimedia food studies application. University of Hertfordshire Research Archive (University of Hertfordshire). 648–653.1 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.