Brian D. Hahn

587 total citations
26 papers, 346 citations indexed

About

Brian D. Hahn is a scholar working on Management, Monitoring, Policy and Law, Molecular Biology and Forestry. According to data from OpenAlex, Brian D. Hahn has authored 26 papers receiving a total of 346 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Management, Monitoring, Policy and Law, 5 papers in Molecular Biology and 5 papers in Forestry. Recurrent topics in Brian D. Hahn's work include Rangeland Management and Livestock Ecology (8 papers), Pasture and Agricultural Systems (5 papers) and Ruminant Nutrition and Digestive Physiology (5 papers). Brian D. Hahn is often cited by papers focused on Rangeland Management and Livestock Ecology (8 papers), Pasture and Agricultural Systems (5 papers) and Ruminant Nutrition and Digestive Physiology (5 papers). Brian D. Hahn collaborates with scholars based in South Africa, United States and United Kingdom. Brian D. Hahn's co-authors include M. Timm Hoffman, Frederick E. Grine, Stephen Tollman, Daniel T. Valentine, Peter J. Carrick, Roland K. Roberts, Simon Todd, Anthony M. Starfield, D.P. Hodgkinson and David S. Richardson and has published in prestigious journals such as Nuclear Physics B, Journal of Theoretical Biology and Annals of Botany.

In The Last Decade

Brian D. Hahn

24 papers receiving 317 citations

Peers

Brian D. Hahn
John J. Borkowski United States
Roland C. Kufeld United States
Nicole Yavercovski France
Aichun Xu China
Zhi‐Pang Huang China
Aili Kang United States
Richard Lamprey Kenya
Rengert Elburg Germany
Péter János Kiss Hungary
Regan Smyth United States
John J. Borkowski United States
Brian D. Hahn
Citations per year, relative to Brian D. Hahn Brian D. Hahn (= 1×) peers John J. Borkowski

Countries citing papers authored by Brian D. Hahn

Since Specialization
Citations

This map shows the geographic impact of Brian D. Hahn'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 Brian D. Hahn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Brian D. Hahn more than expected).

Fields of papers citing papers by Brian D. Hahn

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Brian D. Hahn. 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 Brian D. Hahn. The network helps show where Brian D. Hahn may publish in the future.

Co-authorship network of co-authors of Brian D. Hahn

This figure shows the co-authorship network connecting the top 25 collaborators of Brian D. Hahn. A scholar is included among the top collaborators of Brian D. Hahn 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 Brian D. Hahn. Brian D. Hahn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hahn, Brian D., et al.. (2007). A short-term mechanistic model of forage and livestock in the semi-arid Succulent Karoo: 2. Evaluation and application. Agricultural Systems. 95(1-3). 62–75. 5 indexed citations
2.
Hahn, Brian D., et al.. (2007). A short-term mechanistic model of forage and livestock in the semi-arid Succulent Karoo: 1. Description of the model and sensitivity analyses. Agricultural Systems. 95(1-3). 49–61. 9 indexed citations
3.
Hahn, Brian D., et al.. (2007). Modelling the sustainability and productivity of pastoral systems in the communal areas of Namaqualand. Journal of Arid Environments. 70(4). 701–717. 23 indexed citations
4.
5.
Hahn, Brian D., et al.. (2005). Honey, Where Should We Sit?. Mathematics Magazine. 78(5). 379–379.
6.
7.
Hahn, Brian D., et al.. (1999). Frame-based modelling as a method of simulating rangeland production systems in the long term. Agricultural Systems. 62(1). 29–49. 18 indexed citations
8.
Hahn, Brian D.. (1994). C++, a practical introduction. Medical Entomology and Zoology. 2 indexed citations
9.
Hahn, Brian D.. (1994). FORTRAN 90 for Scientists and Engineers. CERN Document Server (European Organization for Nuclear Research). 2 indexed citations
10.
Hahn, Brian D., et al.. (1991). A model for the evaluation of different production strategies for animal production from rangeland in developing areas: An overview. Journal of the Grassland Society of Southern Africa. 8(4). 153–159. 5 indexed citations
11.
Hahn, Brian D.. (1991). Photosynthesis and photorespiration: Modelling the essentials. Journal of Theoretical Biology. 151(1). 123–139. 11 indexed citations
12.
Hahn, Brian D., et al.. (1990). A description of Driver: an interactive modelling aid. International Journal of Mathematical Education in Science and Technology. 21(1). 117–121. 1 indexed citations
13.
Hahn, Brian D.. (1984). A Mathematical Model of Leaf Carbon Metabolism. Annals of Botany. 54(3). 325–339. 19 indexed citations
14.
Hahn, Brian D., et al.. (1983). A deterministic model of an anthrax epizootic: threshold results. Ecological Modelling. 20(2-3). 233–241. 27 indexed citations
15.
Hahn, Brian D., et al.. (1981). A mathematical model of an anthrax epizoötic in the Kruger National Park. Applied Mathematical Modelling. 5(3). 130–136. 26 indexed citations
16.
Tollman, Stephen, Frederick E. Grine, & Brian D. Hahn. (1980). Ontogeny and sexual dimorphism in Aulacephalodon (Reptilia, Anomodontia). Biodiversity Heritage Library (Smithsonian Institution). 36 indexed citations
17.
Hahn, Brian D., et al.. (1978). Electric field distribution, ionic selectivity and permeability in nerve. Bulletin of Mathematical Biology. 40(5). 637–649. 2 indexed citations
18.
Grine, Frederick E. & Brian D. Hahn. (1978). Allometric growth in the Diademodontinae (Reptilia; Therapsida); a preliminary report. University of the Witwatersrand, Johannesburg Institutional Repository on DSpace (University of the Witwatersrand, Johannesburg). 11 indexed citations
19.
Hahn, Brian D. & D.P. Hodgkinson. (1973). Unitarity and Analyticity Bounds on Pion-Nucleon Helicity Amplitudes. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 7(11). 3380–3385.
20.
Hahn, Brian D. & D.P. Hodgkinson. (1972). Finite energy bounds on scattering amplitudes. Nuclear Physics B. 46(1). 232–252. 3 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by John J. Borkowski Breakdown of academic impact, for papers by Roland C. Kufeld Breakdown of academic impact, for papers by Nicole Yavercovski Breakdown of academic impact, for papers by Aichun Xu Breakdown of academic impact, for papers by Zhi‐Pang Huang Breakdown of academic impact, for papers by Aili Kang Breakdown of academic impact, for papers by Richard Lamprey Breakdown of academic impact, for papers by Rengert Elburg Breakdown of academic impact, for papers by Péter János Kiss Breakdown of academic impact, for papers by Regan Smyth
Rankless by CCL
2026