D. D. Hai

1.4k total citations
95 papers, 965 citations indexed

About

D. D. Hai is a scholar working on Applied Mathematics, Computational Theory and Mathematics and Numerical Analysis. According to data from OpenAlex, D. D. Hai has authored 95 papers receiving a total of 965 indexed citations (citations by other indexed papers that have themselves been cited), including 82 papers in Applied Mathematics, 73 papers in Computational Theory and Mathematics and 17 papers in Numerical Analysis. Recurrent topics in D. D. Hai's work include Advanced Mathematical Modeling in Engineering (72 papers), Nonlinear Partial Differential Equations (64 papers) and Nonlinear Differential Equations Analysis (52 papers). D. D. Hai is often cited by papers focused on Advanced Mathematical Modeling in Engineering (72 papers), Nonlinear Partial Differential Equations (64 papers) and Nonlinear Differential Equations Analysis (52 papers). D. D. Hai collaborates with scholars based in United States, Vietnam and Chile. D. D. Hai's co-authors include R. Shivaji, V. Anuradha, Klaus Schmitt, Seth F. Oppenheimer, Ralph C. Smith, Haiyan Wang, Govinda J. Weerakkody, Raúl Manásevich, Xiangsheng Xu and Lakshmi Sankar and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Mathematical Analysis and Applications and Applied Mathematics and Computation.

In The Last Decade

D. D. Hai

85 papers receiving 848 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
D. D. Hai United States 18 926 611 213 165 100 95 965
Pasquale Candito Italy 15 814 0.9× 491 0.8× 274 1.3× 120 0.7× 62 0.6× 47 847
Vasile Staicu Portugal 14 603 0.7× 535 0.9× 99 0.5× 169 1.0× 116 1.2× 73 687
Shangquan Bu China 13 542 0.6× 373 0.6× 146 0.7× 320 1.9× 128 1.3× 78 720
Qihu Zhang China 14 1.3k 1.4× 1.2k 1.9× 158 0.7× 278 1.7× 134 1.3× 43 1.4k
Yuhua Li China 12 557 0.6× 367 0.6× 73 0.3× 213 1.3× 124 1.2× 26 602
Henghui Zou United States 11 620 0.7× 479 0.8× 96 0.5× 229 1.4× 66 0.7× 29 718
Manabu Naito Japan 14 586 0.6× 190 0.3× 406 1.9× 105 0.6× 80 0.8× 69 678
Giuseppina D’Aguì Italy 13 491 0.5× 251 0.4× 173 0.8× 90 0.5× 53 0.5× 51 538
Shapour Heidarkhani Iran 17 1.1k 1.1× 570 0.9× 370 1.7× 176 1.1× 196 2.0× 164 1.1k
Peihao Zhao China 12 394 0.4× 316 0.5× 66 0.3× 109 0.7× 63 0.6× 58 482

Countries citing papers authored by D. D. Hai

Since Specialization
Citations

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

Fields of papers citing papers by D. D. Hai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of D. D. Hai

This figure shows the co-authorship network connecting the top 25 collaborators of D. D. Hai. A scholar is included among the top collaborators of D. D. Hai 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 D. D. Hai. D. D. Hai 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.
Hai, D. D., et al.. (2020). Uniqueness of positive radial solutions for a class of infinite semipositone 𝑝-Laplacian problems in a ball. Proceedings of the American Mathematical Society. 148(5). 2059–2067. 4 indexed citations
2.
Hai, D. D. & R. Shivaji. (2018). Existence and multiplicity of positive radial solutions for singular superlinear elliptic systems in the exterior of a ball. Journal of Differential Equations. 266(4). 2232–2243. 24 indexed citations
3.
Hai, D. D., et al.. (2018). Positive solutions for a class of non-cooperative pq-Laplacian systems with singularities. Applied Mathematics Letters. 85. 103–109. 2 indexed citations
4.
Hai, D. D., et al.. (2018). Uniqueness of positive radial solutions for infinite semipositone p-Laplacian problems in exterior domains. Journal of Mathematical Analysis and Applications. 472(1). 510–525. 17 indexed citations
5.
Hai, D. D.. (2016). Existence of positive solutions for singular p-Laplacian Sturm-Liouville boundary value problems. SHILAP Revista de lepidopterología. 3 indexed citations
6.
Hai, D. D. & R. Shivaji. (2016). On radial solutions for singular combined superlinear elliptic systems on annular domains. Journal of Mathematical Analysis and Applications. 446(1). 335–344. 8 indexed citations
7.
Hai, D. D.. (2015). A COMPARISON PRINCIPLE AND APPLICATIONS TO ASYMPTOTICALLY p-LINEAR BOUNDARY VALUE PROBLEMS. Osaka Journal of Mathematics. 52(2). 393–408. 5 indexed citations
8.
Hai, D. D.. (2014). Positive Radial Solutions for Singular Quasilinear Elliptic Equations in a Ball. Publications of the Research Institute for Mathematical Sciences. 50(2). 341–362. 4 indexed citations
9.
Hai, D. D.. (2014). Nonexistence of positive solutions for a class ofp-Laplacian boundary value problems. Applied Mathematics Letters. 31. 12–15. 1 indexed citations
10.
Hai, D. D.. (2011). On a class of singular p-Laplacian boundary value problems. Journal of Mathematical Analysis and Applications. 383(2). 619–626. 30 indexed citations
11.
Hai, D. D.. (2008). On singular nonpositone semilinear elliptic problems. Topological Methods in Nonlinear Analysis. 32(1). 41–47. 2 indexed citations
12.
Hai, D. D. & Haiyan Wang. (2006). Nontrivial solutions for p-Laplacian systems. Journal of Mathematical Analysis and Applications. 330(1). 186–194. 19 indexed citations
13.
Hai, D. D.. (2005). Uniqueness of positive solutions for semilinear elliptic systems. Journal of Mathematical Analysis and Applications. 313(2). 761–767. 10 indexed citations
14.
Hai, D. D. & R. Shivaji. (2003). Existence and uniqueness for a class of quasilinear elliptic boundary value problems. Journal of Differential Equations. 193(2). 500–510. 23 indexed citations
15.
Hai, D. D.. (2003). On a class of semilinear elliptic systems. Journal of Mathematical Analysis and Applications. 285(2). 477–486. 14 indexed citations
16.
Hai, D. D. & Govinda J. Weerakkody. (2000). Bounds for the Maximum Likelihood Estimates in Two-Parameter Gamma Distribution. Journal of Mathematical Analysis and Applications. 245(1). 1–6. 11 indexed citations
17.
Hai, D. D.. (1998). Positive Solutions to a Class of Elliptic Boundary Value Problems. Journal of Mathematical Analysis and Applications. 227(1). 195–199. 24 indexed citations
18.
Hai, D. D., Klaus Schmitt, & R. Shivaji. (1998). Positive Solutions of Quasilinear Boundary Value Problems. Journal of Mathematical Analysis and Applications. 217(2). 672–686. 39 indexed citations
19.
Hai, D. D. & Seth F. Oppenheimer. (1996). Existence and Uniqueness Results for Some Nonlinear Boundary Value Problems. Journal of Mathematical Analysis and Applications. 198(1). 35–48. 59 indexed citations
20.
Hai, D. D.. (1989). Two point boundary value problem for differential equations with reflection of argument. Journal of Mathematical Analysis and Applications. 144(2). 313–321. 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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