Nigel R. O’Brian

420 total citations
14 papers, 253 citations indexed

About

Nigel R. O’Brian is a scholar working on Geometry and Topology, Clinical Psychology and Mathematical Physics. According to data from OpenAlex, Nigel R. O’Brian has authored 14 papers receiving a total of 253 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Geometry and Topology, 5 papers in Clinical Psychology and 4 papers in Mathematical Physics. Recurrent topics in Nigel R. O’Brian's work include Stuttering Research and Treatment (4 papers), Phonetics and Phonology Research (4 papers) and Geometry and complex manifolds (3 papers). Nigel R. O’Brian is often cited by papers focused on Stuttering Research and Treatment (4 papers), Phonetics and Phonology Research (4 papers) and Geometry and complex manifolds (3 papers). Nigel R. O’Brian collaborates with scholars based in Australia, United States and United Kingdom. Nigel R. O’Brian's co-authors include Mark Onslow, Sue O’Brian, Ann Packman, John Rawnsley, Domingo Toledo, Angela Cream, David Edelman and Rebecca A. Herb and has published in prestigious journals such as Journal of Speech Language and Hearing Research, Transactions of the American Mathematical Society and Bulletin of the London Mathematical Society.

In The Last Decade

Nigel R. O’Brian

13 papers receiving 220 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Nigel R. O’Brian Australia	8	120	92	69	54	52	14	253
Dan Marshall Hong Kong	10	25 0.2×	133 1.4×	20 0.3×	5 0.1×	5 0.1×	18	254
James H. Straughan United States	6	60 0.5×	11 0.1×	4 0.1×	119 2.2×	11 0.2×	10	299
Suzanne Larson United States	9	21 0.2×	10 0.1×	72 1.0×	19 0.4×	21 0.4×	41	238
Benjamin Young United States	9	82 0.7×	4 0.0×	26 0.4×	71 1.3×	33 0.6×	23	210
Xiaomin Li China	11	139 1.2×	37 0.4×	50 0.7×	30 0.6×		41	337
Élodie Giroux France	8	16 0.1×	35 0.4×	31 0.4×		23 0.4×	38	219
Silvia Faggian Italy	11	34 0.3×	9 0.1×	4 0.1×	9 0.2×	8 0.2×	27	340
David Bruce Cohen United States	4	4 0.0×	18 0.2×	24 0.3×	219 4.1×	21 0.4×	7	400
Paul Turner United Kingdom	7	18 0.1×	7 0.1×	101 1.5×		93 1.8×	28	179
Niels O. Nygaard United States	9	5 0.0×	94 1.0×	158 2.3×	1 0.0×	121 2.3×	12	332

Countries citing papers authored by Nigel R. O’Brian

Since Specialization

Citations

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

Fields of papers citing papers by Nigel R. O’Brian

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nigel R. O’Brian. 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 Nigel R. O’Brian. The network helps show where Nigel R. O’Brian may publish in the future.

Co-authorship network of co-authors of Nigel R. O’Brian

This figure shows the co-authorship network connecting the top 25 collaborators of Nigel R. O’Brian. A scholar is included among the top collaborators of Nigel R. O’Brian 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 Nigel R. O’Brian. Nigel R. O’Brian 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:

14 of 14 papers shown

O’Brian, Sue, Ann Packman, Mark Onslow, & Nigel R. O’Brian. (2004). Measurement of Stuttering in Adults. Journal of Speech Language and Hearing Research. 47(5). 1081–1087. 93 indexed citations

Edelman, David & Nigel R. O’Brian. (2004). Tote arbitrage and lock opportunities in racetrack betting. European Journal of Finance. 10(5). 370–378. 6 indexed citations

O’Brian, Sue, Ann Packman, Mark Onslow, & Nigel R. O’Brian. (2003). Generalizability Theory II. Journal of Speech Language and Hearing Research. 46(3). 718–723. 11 indexed citations

O’Brian, Nigel R., Sue O’Brian, Ann Packman, & Mark Onslow. (2003). Generalizability Theory I. Journal of Speech Language and Hearing Research. 46(3). 711–717. 34 indexed citations

O’Brian, Sue, et al.. (2003). Is Listener Comfort a Viable Construct in Stuttering Research?. Journal of Speech Language and Hearing Research. 46(2). 503–509. 25 indexed citations

O’Brian, Nigel R.. (1987). Geometry of twisting cochains. Compositio Mathematica. 63(1). 41–62. 1 indexed citations

O’Brian, Nigel R. & John Rawnsley. (1985). Twistor spaces. Annals of Global Analysis and Geometry. 3(1). 29–58. 34 indexed citations

O’Brian, Nigel R., et al.. (1985). A Grothendieck-Riemann-Roch formula for maps of complex manifolds. Mathematische Annalen. 271(4). 493–526. 10 indexed citations

O’Brian, Nigel R., et al.. (1981). Hirzebruch-Riemann-Roch for Coherent Sheaves. American Journal of Mathematics. 103(2). 253–253. 6 indexed citations

10.

O’Brian, Nigel R., et al.. (1981). The Trace Map and Characteristic Classes for Coherent Sheaves. American Journal of Mathematics. 103(2). 225–225. 18 indexed citations

11.

O’Brian, Nigel R., et al.. (1981). Grothendieck-Riemann-Roch for complex manifolds. Bulletin of the American Mathematical Society. 5(2). 182–184. 8 indexed citations

12.

O’Brian, Nigel R.. (1977). Zeroes of holomorphic vector fields and Grothendieck duality theory. Transactions of the American Mathematical Society. 229(0). 289–306. 2 indexed citations

13.

Herb, Rebecca A. & Nigel R. O’Brian. (1976). A Characterization of Unipotent, Semisimple and Regular Elements in a Reductive Algebraic Group. Bulletin of the London Mathematical Society. 8(3). 233–238. 1 indexed citations

14.

O’Brian, Nigel R.. (1975). Zeroes of Holomorphic Vector Fields and the Grothendieck Residue. Bulletin of the London Mathematical Society. 7(1). 33–38. 4 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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