J. R. Simpson

4.0k total citations
74 papers, 2.8k citations indexed

About

J. R. Simpson is a scholar working on Soil Science, Plant Science and Electrical and Electronic Engineering. According to data from OpenAlex, J. R. Simpson has authored 74 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Soil Science, 25 papers in Plant Science and 16 papers in Electrical and Electronic Engineering. Recurrent topics in J. R. Simpson's work include Soil Carbon and Nitrogen Dynamics (19 papers), Soil and Water Nutrient Dynamics (13 papers) and Plant nutrient uptake and metabolism (11 papers). J. R. Simpson is often cited by papers focused on Soil Carbon and Nitrogen Dynamics (19 papers), Soil and Water Nutrient Dynamics (13 papers) and Plant nutrient uptake and metabolism (11 papers). J. R. Simpson collaborates with scholars based in United States, Australia and United Kingdom. J. R. Simpson's co-authors include J. R. Freney, O. T. Denmead, E. Desurvire, A. Pinkerton, C.R. Giles, J. B. MacChesney, S.F. Ledgard, H. Lees, B. Golding and M. M. Broer and has published in prestigious journals such as Nature, Science and Physical Review Letters.

In The Last Decade

J. R. Simpson

71 papers receiving 2.4k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
J. R. Simpson United States	29	1.0k	785	600	527	502	74	2.8k
Mingzhu He China	21	462 0.5×	559 0.7×	180 0.3×	302 0.6×	86 0.2×	76	1.8k
D. M. B. P. Milori Brazil	39	1.3k 1.2×	642 0.8×	299 0.5×	74 0.1×	126 0.3×	160	4.0k
W. D. Kemper United States	31	1.6k 1.6×	541 0.7×	351 0.6×	119 0.2×	39 0.1×	122	3.5k
Xun Li China	31	258 0.3×	785 1.0×	172 0.3×	556 1.1×	241 0.5×	163	3.1k
E. O. McLean United States	23	730 0.7×	511 0.7×	317 0.5×	37 0.1×	487 1.0×	91	2.1k
C. G. Carlson United States	20	256 0.3×	248 0.3×	102 0.2×	84 0.2×	65 0.1×	58	1.0k
Yuntao Hu United States	29	949 0.9×	435 0.6×	203 0.3×	133 0.3×	104 0.2×	72	3.3k
J.R. Sims United States	18	416 0.4×	369 0.5×	141 0.2×	169 0.3×	82 0.2×	57	1.5k
Giustino Tonon Italy	28	913 0.9×	941 1.2×	162 0.3×	188 0.4×	356 0.7×	114	3.3k
M. A. K. Lodhi United States	23	232 0.2×	626 0.8×	89 0.1×	99 0.2×	101 0.2×	99	1.5k

Countries citing papers authored by J. R. Simpson

Since Specialization

Citations

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

Fields of papers citing papers by J. R. Simpson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. R. Simpson. 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 J. R. Simpson. The network helps show where J. R. Simpson may publish in the future.

Co-authorship network of co-authors of J. R. Simpson

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Simpson, J. R.. (1991). Fiber-based amplifiers: progress in 1990. 26. FA1–FA1.

Mollenauer, L. F., M. J. Neubelt, S. G. Evangelides, et al.. (1990). EXPERIMENTAL DEMONSTRATION OF SOLITON TRANSMISSION OVER MORE THAN 10,000 km.. Conference on Lasers and Electro-Optics. 6 indexed citations

Atkins, R. M., P. J. Lemaire, J. R. Simpson, et al.. (1990). Defect formation and related radiation and hydrogen response in optical fiber fabricated by MCVD. TUB2–TUB2. 4 indexed citations

Humphreys, E., J. R. Freney, W. A. Muirhead, et al.. (1988). Loss of ammonia after application of urea at different times to dry-seeded, irrigated rice. Nutrient Cycling in Agroecosystems. 16(1). 47–57. 25 indexed citations

Kosinski, S. G., et al.. (1988). Raman and NMR spectroscopy of SiO2 glasses CO-doped with Al2O3 and P2O5. Journal of Non-Crystalline Solids. 105(1-2). 45–52. 91 indexed citations

Broer, M. M., B. Golding, W. H. Haemmerle, J. R. Simpson, & D. L. Hùber. (1986). Low-temperature optical dephasing of rare-earth ions in inorganic glasses. Physical review. B, Condensed matter. 33(6). 4160–4165. 69 indexed citations

Ledgard, S.F., J. R. Simpson, J. R. Freney, F. J. Bergersen, & Richard Morton. (1985). Assessment of the relative uptake of added and indigenous soil nitrogen by nodulated legumes and reference plants in the 15N dilution measurement of N2 fixation: Glasshouse application of method. Soil Biology and Biochemistry. 17(3). 323–328. 11 indexed citations

Simpson, J. R., J. R. Freney, R. Wetselaar, et al.. (1984). Transformations and losses of urea nitrogen after application to flooded rice. Australian Journal of Agricultural Research. 35(2). 189–200. 66 indexed citations

Simpson, J. R., et al.. (1983). Gaseous Loss of Nitrogen from Plant-Soil Systems. 279 indexed citations

10.

Wood, D. L., K. L. Walker, J. R. Simpson, J. B. MacChesney, & A. J. Ritger. (1982). Reaction equilibrium and resultant glass compositions in the MCVD process. TuCC4–TuCC4. 5 indexed citations

11.

Walker, K. L., J. B. MacChesney, & J. R. Simpson. (1981). Reduction of hydroxyl contamination in optical fiber preforms. WA4–WA4. 2 indexed citations

12.

Denmead, O. T., J. R. Freney, & J. R. Simpson. (1979). Studies of Nitrous Oxide Emission from a Grass Sward. Soil Science Society of America Journal. 43(4). 726–728. 88 indexed citations

13.

Bernhardt, Anthony F., et al.. (1976). Multifrequency radiation pressure laser, isotope separation. Optics Communications. 16(1). 169–171. 20 indexed citations

14.

Simpson, J. R.. (1976). Transfer of nitrogen from three pasture legumes under periodic defoliation in a field environment. Australian Journal of Experimental Agriculture and Animal Husbandry. 16(83). 863–870. 46 indexed citations

15.

Lipsett, J & J. R. Simpson. (1973). Analysis of the response by wheat to application of molybdenum in relation to nitrogen status. Australian Journal of Experimental Agriculture and Animal Husbandry. 13(64). 563–566. 4 indexed citations

16.

Simpson, J. R. & A. H. Gibson. (1970). A comparison of the effectiveness of two strains of Rhizobium trifolii with trifoliumsubterraneum in agar and three soils. Soil Biology and Biochemistry. 2(4). 295–305. 11 indexed citations

17.

Simpson, J. R.. (1968). Comparison of the efficiencies of several nitrogen fertilizers applied to pasture in autumn and winter. Australian Journal of Experimental Agriculture and Animal Husbandry. 8(32). 301–308. 6 indexed citations

18.

Simpson, J. R.. (1965). The transference of nitrogen from pasture legumes to an associated grass under several systems of management in pot culture. Australian Journal of Agricultural Research. 16(6). 915–926. 45 indexed citations

19.

Simpson, J. R.. (1965). The effects of nitrogenous fertilizers on the winter growth of pastures in a tablelands environment. Australian Journal of Experimental Agriculture and Animal Husbandry. 5(18). 208–217. 4 indexed citations

20.

Lees, H., et al.. (1954). Formation of Nitrite from Oximes and Hydroxylamine by Micro-organisms. Nature. 173(4399). 358–358. 5 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.

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