This map shows the geographic impact of Kofi Obeng'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 Kofi Obeng with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kofi Obeng more than expected).
This network shows the impact of papers produced by Kofi Obeng. 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 Kofi Obeng. The network helps show where Kofi Obeng may publish in the future.
Co-authorship network of co-authors of Kofi Obeng
This figure shows the co-authorship network connecting the top 25 collaborators of Kofi Obeng.
A scholar is included among the top collaborators of Kofi Obeng 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 Kofi Obeng. Kofi Obeng is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Obeng, Kofi, et al.. (2008). Explaining crashes at intersections with red light cameras. Transportation Research Part A Policy and Practice. 42(5).1 indexed citations
Obeng, Kofi, et al.. (2004). Crash Risk Reduction at Signalized Intersections Using Longitudinal Data. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich).
10.
Obeng, Kofi, et al.. (1997). TYPE OF MANAGEMENT AND SUBSIDY-INDUCED ALLOCATIVE DISTORTIONS IN URBAN TRANSIT FIRMS: A TIME-SERIES APPROACH. Journal of transport economics and policy. 31(2).8 indexed citations
11.
Obeng, Kofi & Isaiah O. Ugboro. (1996). APPLICATIONS OF TQM IN PUBLIC TRANSIT FIRMS. Transportation quarterly. 50(3).3 indexed citations
12.
Obeng, Kofi, et al.. (1995). RE-EXAMINATION OF INEFFICIENCIES IN URBAN TRANSIT SYSTEMS: A STOCHASTIC FRONTIER APPROACH. Logistics and transportation review. 31(4).14 indexed citations
13.
Obeng, Kofi. (1994). The economic cost of subsidy-induced technical inefficiency. 21(1).22 indexed citations
14.
Obeng, Kofi, et al.. (1993). TOTAL QUALITY MANAGEMENT FOR PUBLIC TRANSIT SYSTEMS. Transportation quarterly. 47(2).3 indexed citations
15.
Obeng, Kofi. (1990). The sources of output change in urban bus transit systems. 17(2).1 indexed citations
16.
Obeng, Kofi, et al.. (1986). AN INITIAL ANALYSIS OF TOTAL FACTOR PRODUCTIVITY FOR PUBLIC TRANSIT. Transportation Research Record Journal of the Transportation Research Board.3 indexed citations
Obeng, Kofi, et al.. (1985). TOTAL FACTOR PRODUCTIVITY ANALYSIS OF PUBLIC TRANSIT.1 indexed citations
19.
Obeng, Kofi. (1984). THE ECONOMICS OF BUS TRANSIT OPERATION. Logistics and transportation review. 20(1).19 indexed citations
20.
Obeng, Kofi. (1983). FARE SUBSIDIES TO ACHIEVE PARETO OPTIMALITY--A BENEFIT COST APPROACH. Logistics and transportation review. 19(4).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.