Shair Ahmad

1.9k total citations
70 papers, 1.5k citations indexed

About

Shair Ahmad is a scholar working on Public Health, Environmental and Occupational Health, Applied Mathematics and Numerical Analysis. According to data from OpenAlex, Shair Ahmad has authored 70 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Public Health, Environmental and Occupational Health, 25 papers in Applied Mathematics and 22 papers in Numerical Analysis. Recurrent topics in Shair Ahmad's work include Mathematical and Theoretical Epidemiology and Ecology Models (28 papers), Differential Equations and Numerical Methods (20 papers) and Nonlinear Differential Equations Analysis (17 papers). Shair Ahmad is often cited by papers focused on Mathematical and Theoretical Epidemiology and Ecology Models (28 papers), Differential Equations and Numerical Methods (20 papers) and Nonlinear Differential Equations Analysis (17 papers). Shair Ahmad collaborates with scholars based in United States, Bulgaria and Venezuela. Shair Ahmad's co-authors include A. C. Lazer, Ivanka Stamova, Gani Stamov, Antonio Ambrosetti, Antonio Tineo, M. Rama Mohana Rao, Dung Le, Curtis C. Travis, A. S. Vatsala and Muhammad Aown Sammar Raza and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Transactions of the American Mathematical Society and Applied Mathematics and Computation.

In The Last Decade

Shair Ahmad

68 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Shair Ahmad United States 22 886 671 370 313 255 70 1.5k
Eduardo Liz Spain 27 990 1.1× 755 1.1× 327 0.9× 354 1.1× 261 1.0× 115 1.9k
Sergei Trofımchuk Chile 24 801 0.9× 774 1.2× 360 1.0× 218 0.7× 127 0.5× 90 1.5k
O. Arino France 19 718 0.8× 467 0.7× 425 1.1× 472 1.5× 63 0.2× 59 1.6k
Shiwang Ma China 19 655 0.7× 805 1.2× 280 0.8× 196 0.6× 112 0.4× 84 1.4k
Robert E. Gaines United States 11 484 0.5× 928 1.4× 186 0.5× 132 0.4× 316 1.2× 22 1.5k
Joseph W.-H. So Canada 22 1.5k 1.7× 495 0.7× 732 2.0× 659 2.1× 90 0.4× 38 2.0k
Jean‐Michel Roquejoffre France 24 765 0.9× 778 1.2× 511 1.4× 177 0.6× 76 0.3× 72 1.6k
Peter Y. H. Pang Singapore 15 633 0.7× 478 0.7× 489 1.3× 335 1.1× 92 0.4× 59 1.1k
G. J. Butler Canada 18 519 0.6× 320 0.5× 182 0.5× 375 1.2× 92 0.4× 37 1.1k
Franz Rothe Germany 13 516 0.6× 223 0.3× 286 0.8× 242 0.8× 89 0.3× 26 994

Countries citing papers authored by Shair Ahmad

Since Specialization
Citations

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

Fields of papers citing papers by Shair Ahmad

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Shair Ahmad. 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 Shair Ahmad. The network helps show where Shair Ahmad may publish in the future.

Co-authorship network of co-authors of Shair Ahmad

This figure shows the co-authorship network connecting the top 25 collaborators of Shair Ahmad. A scholar is included among the top collaborators of Shair Ahmad 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 Shair Ahmad. Shair Ahmad 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.
Ahmad, Shair, et al.. (2022). Effect of Vermicompost and Organic Matter in Enhancing Wheat Tolerance against Drought Stress. International Journal of Agriculture and Biosciences. 11(3). 165–167. 7 indexed citations
2.
Ahmad, Shair. (2018). Revisiting Roots of Real Numbers.. 32(2). 6–15.
3.
Ahmad, Shair & Dung Le. (2015). Global and blow up solutions to cross diffusion systems. Advances in Nonlinear Analysis. 4(3). 209–219. 5 indexed citations
4.
Ahmad, Shair & Gani Stamov. (2008). Almost periodic solutions of -dimensional impulsive competitive systems. Nonlinear Analysis Real World Applications. 10(3). 1846–1853. 45 indexed citations
5.
Ahmad, Shair & Ivanka Stamova. (2007). Asymptotic stability of competitive systems with delays and impulsive perturbations. Journal of Mathematical Analysis and Applications. 334(1). 686–700. 59 indexed citations
6.
Ahmad, Shair & A. C. Lazer. (1995). On the nonautonomous N-competing species problems. Applicable Analysis. 57(3-4). 309–323. 21 indexed citations
7.
Ahmad, Shair. (1991). A nonstandard resonance problem for ordinary differential equations. Transactions of the American Mathematical Society. 323(2). 857–875. 16 indexed citations
8.
Ahmad, Shair & A. C. Lazer. (1991). An elementary approach to traveling front solutions to a system of N competition-diffusion equations. Nonlinear Analysis. 16(10). 893–901. 21 indexed citations
9.
Ahmad, Shair. (1988). On almost Periodic Solutions of the Competing Species Problems. Proceedings of the American Mathematical Society. 102(4). 855–855. 6 indexed citations
10.
Ahmad, Shair. (1988). On almost periodic solutions of the competing species problems. Proceedings of the American Mathematical Society. 102(4). 855–861. 47 indexed citations
11.
Ahmad, Shair. (1987). Convergence and ultimate bounds of solutions of the nonautonomous Volterra-Lotka competition equations. Journal of Mathematical Analysis and Applications. 127(2). 377–387. 58 indexed citations
12.
Ahmad, Shair. (1986). Multiple nontrivial solutions of resonant and nonresonant asymptotically linear problems. Proceedings of the American Mathematical Society. 96(3). 405–409. 37 indexed citations
13.
Ahmad, Shair. (1986). Multiple Nontrivial Solutions of Resonant and Nonresonant Asymptotically Linear Problems. Proceedings of the American Mathematical Society. 96(3). 405–405. 8 indexed citations
14.
Ahmad, Shair & A. S. Vatsala. (1981). Comparison results of reaction-diffusion equations with delay in abstract cones. Rendiconti del Seminario Matematico della Università di Padova. 65. 19–34. 2 indexed citations
15.
Ahmad, Shair & A. C. Lazer. (1978). A new generalization of the Sturm comparison theorem to selfadjoint systems. Proceedings of the American Mathematical Society. 68(2). 185–188. 8 indexed citations
16.
Ahmad, Shair, et al.. (1978). Oscillation Criteria for Second-Order Differential Systems. Proceedings of the American Mathematical Society. 71(2). 247–247. 4 indexed citations
17.
Ahmad, Shair & A. C. Lazer. (1978). A New Generalization of the Sturm Comparison Theorem to Selfadjoint Systems. Proceedings of the American Mathematical Society. 68(2). 185–185. 4 indexed citations
18.
Ahmad, Shair. (1976). Asymptotic properties of linear fourth order differential equations. Proceedings of the American Mathematical Society. 59(1). 45–51. 2 indexed citations
19.
Ahmad, Shair. (1976). Asymptotic Properties of Linear Fourth Order Differential Equations. Proceedings of the American Mathematical Society. 59(1). 45–45. 1 indexed citations
20.
Ahmad, Shair & A. C. Lazer. (1969). On the oscillatory behavior of a class of linear third order differential equations. Journal of Mathematical Analysis and Applications. 28(3). 681–689. 12 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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