John R. Callahan

851 total citations
49 papers, 469 citations indexed

About

John R. Callahan is a scholar working on Information Systems, Software and Computer Networks and Communications. According to data from OpenAlex, John R. Callahan has authored 49 papers receiving a total of 469 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Information Systems, 12 papers in Software and 10 papers in Computer Networks and Communications. Recurrent topics in John R. Callahan's work include Innovation and Knowledge Management (10 papers), Software Testing and Debugging Techniques (8 papers) and Software Reliability and Analysis Research (8 papers). John R. Callahan is often cited by papers focused on Innovation and Knowledge Management (10 papers), Software Testing and Debugging Techniques (8 papers) and Software Reliability and Analysis Research (8 papers). John R. Callahan collaborates with scholars based in United States and Canada. John R. Callahan's co-authors include Antonio J. Bailetti, Steve Easterbrook, James Purtilo, Scott MacKenzie, John A. Buzacott, Frank Schneider, Gerard J. Holzmann, Wu Jian, Todd Montgomery and S. Ramakrishnan and has published in prestigious journals such as Management Science, Communications of the ACM and Research Policy.

In The Last Decade

John R. Callahan

39 papers receiving 405 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John R. Callahan United States	12	136	124	110	93	77	49	469
Noushin Ashrafi United States	10	87 0.6×	179 1.4×	53 0.5×	199 2.1×	106 1.4×	33	474
Ho‐Won Jung South Korea	12	44 0.3×	344 2.8×	99 0.9×	157 1.7×	122 1.6×	33	564
Jan Verelst Belgium	14	57 0.4×	353 2.8×	153 1.4×	149 1.6×	169 2.2×	51	600
Yossi Lichtenstein Israel	10	64 0.5×	45 0.4×	45 0.4×	119 1.3×	103 1.3×	34	415
M. A. Ould United Kingdom	10	33 0.2×	323 2.6×	129 1.2×	66 0.7×	355 4.6×	21	569
Selmin Nurcan France	15	50 0.4×	362 2.9×	203 1.8×	48 0.5×	388 5.0×	50	683
Dan Craigen Canada	9	23 0.2×	207 1.7×	109 1.0×	141 1.5×	28 0.4×	28	443
H.G. Sol Netherlands	12	38 0.3×	192 1.5×	151 1.4×	29 0.3×	253 3.3×	46	641
Ma Ángeles Moraga Spain	14	39 0.3×	196 1.6×	58 0.5×	56 0.6×	38 0.5×	43	478
Giorgio Bruno Italy	11	49 0.4×	135 1.1×	81 0.7×	33 0.4×	227 2.9×	30	565

Countries citing papers authored by John R. Callahan

Since Specialization

Citations

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

Fields of papers citing papers by John R. Callahan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John R. Callahan

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

All Works

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20 of 20 papers shown

Murthy, Neil, David P. Holland, Allison T. Chamberlain, et al.. (2020). The 6 E Framework of Public Health Preparedness for Mass Gatherings—Lessons Learned From Super Bowl LIII, Fulton County, Georgia, 2019. Journal of Public Health Management and Practice. 27(5). E197–E204. 2 indexed citations

Callahan, John R.. (2019). The future of identity. IT Professional. 21(3). 14–15.

Othman, Asem, et al.. (2019). Using Biometrics to Fight Credential Fraud. IEEE Communications Standards Magazine. 3(4). 39–45. 2 indexed citations

Wen, Wu & John R. Callahan. (2002). Neuralware engineering: develop verifiable ANN-based systems. 60–66.

Almási, George, John R. Callahan, Shankar S. Iyer, et al.. (2002). Functional specifications for collaboration services. 225–238.

Easterbrook, Steve, John R. Callahan, & Virginie Wiels. (1998). V&V through inconsistency tracking and analysis. 43–49. 5 indexed citations

Easterbrook, Steve & John R. Callahan. (1998). Formal methods for verification and validation of partial specifications: A case study. Journal of Systems and Software. 40(3). 199–210. 29 indexed citations

Callahan, John R., et al.. (1998). Web-based issue tracking for large software projects. IEEE Internet Computing. 2(5). 25–33. 4 indexed citations

Wen, Wu, Marcello Napolitano, & John R. Callahan. (1997). Verifying Stability of Dynamic Soft-Computing Systems. NASA Technical Reports Server (NASA). 2 indexed citations

10.

Callahan, John R., Todd Montgomery, & Brian Whetten. (1997). High-Performance, Reliable Multicasting: Foundations for Future Internet Groupware Applications. NASA Technical Reports Server (NASA). 10(14).

11.

Callahan, John R. & Todd Montgomery. (1996). An approach to verification and validation of a reliable multicasting protocol. ACM SIGSOFT Software Engineering Notes. 21(3). 187–194. 7 indexed citations

12.

Callahan, John R. & Todd Montgomery. (1996). An approach to verification and validation of a reliable multicasting protocol. 187–194. 6 indexed citations

13.

Callahan, John R.. (1995). Using Technology to Enable Collaboration: WET ICE '95. IEEE Intelligent Systems. 10(4). 75–75.

14.

Callahan, John R.. (1995). Concurrent engineering research center. NASA Technical Reports Server (NASA). 3 indexed citations

15.

Callahan, John R., et al.. (1994). A process improvement model for software verification and validation. NASA Technical Reports Server (NASA). 3 indexed citations

16.

Bailetti, Antonio J. & John R. Callahan. (1993). The coordination structure of international collaborative technology arrangements. R and D Management. 23(2). 129–146. 29 indexed citations

17.

Callahan, John R., et al.. (1992). Organizational learning across critical linkages: The case of captive ASIC design and manufacturing. Technovation. 12(7). 433–446. 1 indexed citations

18.

Callahan, John R. & James Purtilo. (1991). A packaging system for heterogeneous execution environments. IEEE Transactions on Software Engineering. 17(6). 626–635. 43 indexed citations

19.

Callahan, John R., et al.. (1989). Parse tree annotations. Communications of the ACM. 32(12). 1467–1477. 30 indexed citations

20.

Callahan, John R. & C. R. Bector. (1975). Optimization with General Stochastic Objective Functions. ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik. 55(9). 528–530. 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.

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