This map shows the geographic impact of David Yanggen'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 David Yanggen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites David Yanggen more than expected).
This network shows the impact of papers produced by David Yanggen. 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 David Yanggen. The network helps show where David Yanggen may publish in the future.
Co-authorship network of co-authors of David Yanggen
This figure shows the co-authorship network connecting the top 25 collaborators of David Yanggen.
A scholar is included among the top collaborators of David Yanggen 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 David Yanggen. David Yanggen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
13 of 13 papers shown
1.
Yanggen, David, et al.. (2010). Landscape-scale conservation in the Congo Basin: lessons learned from the Central African Regional Program for the Environment (CARPE). IUCN eBooks.22 indexed citations
2.
Yanggen, David, et al.. (2010). Conservation à l'échelle du Paysage dans le Bassin du Congo : Leçons tirées du Programme régional pour l'environnement en Afrique centrale (CARPE). IUCN eBooks.1 indexed citations
Yanggen, David, et al.. (2006). The use of orange-fleshed sweetpotato to combat Vitamin A deficiency in Uganda : a study of varietal preferences, extension strategies and post-harvest utilization..16 indexed citations
5.
Yanggen, David, et al.. (2005). Post harvest utilisation of sweetpotato and implications for reducing incidence of Vitamin A deficiency in Uganda. 7. 663–668.3 indexed citations
6.
Yanggen, David, et al.. (2005). Analysis of producer and consumer preferences for sweetpotato varieties in Uganda: implications for research and extension efforts to promote orange-fleshed sweetpotato vitamin A deficiency. 7. 807–811.1 indexed citations
7.
Antle, John M., Roberto O. Valdivia, Charles C. Crissman, J.J. Stoorvogel, & David Yanggen. (2005). Spatial heterogeneity and adoption of soil conservation investments: integrated assessment of slow formation terraces in the andes. Socio-Environmental Systems Modeling. 1(1). 29–53.15 indexed citations
Antle, John M., J.J. Stoorvogel, W. T. Bowen, Charles C. Crissman, & David Yanggen. (2003). The tradeoff analysis approach : lessons from Ecuador and Peru. Socio-Environmental Systems Modeling. 42(2). 189–206.9 indexed citations
10.
Crissman, Charles C., David Yanggen, John M. Antle, et al.. (2003). Relaciones de intercambio existentes entre agricultura, medio ambiente y salud humana con el uso de plaguicidas. Socio-Environmental Systems Modeling. 147–162.1 indexed citations
11.
Yanggen, David, Donald C. Cole, Charles C. Crissman, & Stephen Sherwood. (2003). Human health, environmental, and economic effects of pesticide use in potato production in Ecuador. VTechWorks (Virginia Tech).8 indexed citations
12.
Yanggen, David, et al.. (2003). Los plaguicidas: impactos en produccion, salud y medio ambiente en Carchi, Ecuador.16 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.