Constantin Popa

754 total citations
67 papers, 476 citations indexed

About

Constantin Popa is a scholar working on Computational Theory and Mathematics, Computational Mechanics and Numerical Analysis. According to data from OpenAlex, Constantin Popa has authored 67 papers receiving a total of 476 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Computational Theory and Mathematics, 33 papers in Computational Mechanics and 31 papers in Numerical Analysis. Recurrent topics in Constantin Popa's work include Matrix Theory and Algorithms (36 papers), Advanced Optimization Algorithms Research (21 papers) and Numerical methods in inverse problems (18 papers). Constantin Popa is often cited by papers focused on Matrix Theory and Algorithms (36 papers), Advanced Optimization Algorithms Research (21 papers) and Numerical methods in inverse problems (18 papers). Constantin Popa collaborates with scholars based in Romania, Germany and United States. Constantin Popa's co-authors include Rafał Zdunek, Stefania Petra, Gheorghe Juncu, Ulrich Rüde, Harald Köstler, Gh. Juncu, Alexandru Vlad Ciurea, Bogdan-Gabriel Bratu, Răzvan-Adrian Covache-Busuioc and Horia Petre Costin and has published in prestigious journals such as SHILAP Revista de lepidopterología, International Journal of Molecular Sciences and Applied Mathematics and Computation.

In The Last Decade

Constantin Popa

63 papers receiving 419 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Constantin Popa Romania 11 244 169 144 124 97 67 476
Tuomo Valkonen Finland 9 196 0.8× 70 0.4× 23 0.2× 48 0.4× 115 1.2× 39 413
Kurt Jetter Germany 11 224 0.9× 58 0.3× 56 0.4× 80 0.6× 59 0.6× 34 442
Gabriele Steidl Germany 14 111 0.5× 116 0.7× 23 0.2× 43 0.3× 53 0.5× 41 455
Jeff Calder United States 13 63 0.3× 90 0.5× 87 0.6× 14 0.1× 52 0.5× 41 374
Gregory B. Passty United States 7 196 0.8× 387 2.3× 21 0.1× 257 2.1× 165 1.7× 9 625
A. Bouhamidi France 11 130 0.5× 153 0.9× 15 0.1× 91 0.7× 67 0.7× 35 373
Shai Dekel Israel 13 133 0.5× 23 0.1× 32 0.2× 29 0.2× 73 0.8× 36 382
Borislav Bojanov Bulgaria 14 180 0.7× 128 0.8× 10 0.1× 222 1.8× 70 0.7× 57 574
Donald E. McClure United States 5 109 0.4× 39 0.2× 59 0.4× 32 0.3× 54 0.6× 6 692
Caroline Chaux France 7 222 0.9× 28 0.2× 25 0.2× 26 0.2× 64 0.7× 13 354

Countries citing papers authored by Constantin Popa

Since Specialization
Citations

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

Fields of papers citing papers by Constantin Popa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Constantin Popa

This figure shows the co-authorship network connecting the top 25 collaborators of Constantin Popa. A scholar is included among the top collaborators of Constantin Popa 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 Constantin Popa. Constantin Popa 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.
Toader, Corneliu, Constantin Popa, Răzvan-Adrian Covache-Busuioc, et al.. (2023). From Recognition to Remedy: The Significance of Biomarkers in Neurodegenerative Disease Pathology. International Journal of Molecular Sciences. 24(22). 16119–16119. 29 indexed citations
2.
Popa, Constantin. (2018). On Remotest set and Random controls in Kaczmarz algorithm. SHILAP Revista de lepidopterología.
3.
Juncu, Gheorghe, et al.. (2018). Splitting methods for the numerical solution of multi-component mass transfer problems. Mathematics and Computers in Simulation. 152. 1–14. 1 indexed citations
4.
Popa, Constantin. (2017). Convergence rates for Kaczmarz-type algorithms. Numerical Algorithms. 79(1). 1–17. 23 indexed citations
5.
Petra, Stefania & Constantin Popa. (2016). Single projection Kaczmarz extended algorithms. Numerical Algorithms. 73(3). 791–806. 23 indexed citations
6.
Popa, Constantin, et al.. (2015). Weaker hypotheses for the general projection algorithm with corrections. Analele Universităţii "Ovidius" Constanţa. Seria Matematică. 23(3). 9–16. 3 indexed citations
7.
Popa, Constantin, et al.. (2014). Han-type algorithms for inconsistent systems of linear inequalities – A unified approach. Applied Mathematics and Computation. 246. 247–256. 1 indexed citations
8.
Popa, Constantin, et al.. (2011). PROJECTION ALGORITHMS WITH CORRECTION. Journal of applied mathematics & informatics. 29(3). 697–712. 2 indexed citations
9.
Popa, Constantin, et al.. (2011). On Kaczmarz’s projection iteration as a direct solver for linear least squares problems. Linear Algebra and its Applications. 436(2). 389–404. 15 indexed citations
10.
Juncu, Gheorghe, et al.. (2011). Nonlinear Multigrid Methods for Numerical Solution of the Variably Saturated Flow Equation in Two Space Dimensions. Transport in Porous Media. 91(1). 35–47. 6 indexed citations
11.
Popa, Constantin. (2010). A hybrid Kaczmarz–Conjugate Gradient algorithm for image reconstruction. Mathematics and Computers in Simulation. 80(12). 2272–2285. 8 indexed citations
12.
Popa, Constantin. (2008). Constrained Kaczmarz extended algorithm for image reconstruction. Linear Algebra and its Applications. 429(8-9). 2247–2267. 8 indexed citations
13.
Popa, Constantin. (2007). ALGEBRAIC MULTIGRID SMOOTHING PROPERTY OF KACZMARZ'S RELAXATION FOR GENERAL RECTANGULAR LINEAR SYSTEMS. 29. 150–162. 6 indexed citations
14.
Köstler, Harald, et al.. (2006). Towards an algebraic multigrid method for tomographic image reconstruction -- improving convergence of ART. Research Repository (Delft University of Technology). 4 indexed citations
15.
Popa, Constantin. (2004). A Kaczmarz-Kovarik algorithm for symmetric ill-conditioned matrices.. Indian Journal of Medical Ethics. 12(2). 135–146. 4 indexed citations
16.
Popa, Constantin. (2003). Extended Kaczmarz‐like methods with oblique projections. PAMM. 2(1). 491–492. 2 indexed citations
17.
Popa, Constantin. (2001). Extension of an approximate orthogonalization algorithm to arbitrary rectangular matrices. Linear Algebra and its Applications. 331(1-3). 181–192. 6 indexed citations
18.
Popa, Constantin. (2001). A method for improving orthogonality of rows and columns of matrices. International Journal of Computer Mathematics. 77(3). 469–480. 9 indexed citations
19.
Popa, Constantin. (1999). Block-Projections Algorithms with Blocks Containing Mutually Orthogonal Rows and Columns. BIT Numerical Mathematics. 39(2). 323–338. 11 indexed citations
20.
Popa, Constantin. (1995). Least-squares solution of overdetermined inconsistent linear systems using kaczmarz's relaxation. International Journal of Computer Mathematics. 55(1-2). 79–89. 37 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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