المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Computation, Vol 12, Iss 12, p 243 (2024)

مصطلحات موضوعية: pseudoparabolic equation, inverse problem, integral observation, non-local problem, finite difference method, computational simulations, Electronic computers. Computer science, QA75.5-76.95

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2079-3197/12/12/243; https://doaj.org/toc/2079-3197

URL الوصول: https://doaj.org/article/dfe6e9eb6c5c45048621456d25843389

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Applied Sciences, Vol 14, Iss 13, p 5949 (2024)

مصطلحات موضوعية: non-local parabolic operator, magnetohydrodynamics flow system, inverse problem, Galerkin procedure, finite element method, iterative method, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2076-3417/14/13/5949; https://doaj.org/toc/2076-3417

URL الوصول: https://doaj.org/article/04f7b43ea2e642c79422e1dac90fd006

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Axioms, Vol 13, Iss 8, p 507 (2024)

مصطلحات موضوعية: atmosphere pollution, nonlinear parabolic system, infinite domain, log-transformation, degeneracy, minimum principle, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2075-1680/13/8/507; https://doaj.org/toc/2075-1680

URL الوصول: https://doaj.org/article/960202b86ce14d6bb6cc5c68a665e648

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 12, Iss 11, p 1748 (2024)

مصطلحات موضوعية: inverse source problem, hyperbolic problem on disjoint domain, non-local differential operator, non-local initial conditions, finite difference method, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/12/11/1748; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/415ad1476e8940bda6756b689504100a

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 12, Iss 10, p 1499 (2024)

مصطلحات موضوعية: heat equation, disjoint domains, inverse problem, integral observation, difference scheme, Saul’yev method, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/12/10/1499; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/5af0f9032aac4a0a89923a90b39eb1ec

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Fractal and Fractional, Vol 8, Iss 4, p 196 (2024)

مصطلحات موضوعية: coefficient inverse problems, Caputo derivative, nonlinear control ODE systems, quasilinearization, regularization, SIR model, Thermodynamics, QC310.15-319, Mathematics, QA1-939, Analysis, QA299.6-433

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2504-3110/8/4/196; https://doaj.org/toc/2504-3110

URL الوصول: https://doaj.org/article/f9639cd4601e4e55aed1951eb55bd21b

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Axioms, Vol 13, Iss 1, p 64 (2024)

مصطلحات موضوعية: Laplace’s equation, dynamical boundary conditions, inverse problems, Green’s identity, meshless method, conjugate gradient method, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2075-1680/13/1/64; https://doaj.org/toc/2075-1680

URL الوصول: https://doaj.org/article/caf959d1caad4bd3bdd20633c58fed86

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 12, Iss 2, p 299 (2024)

مصطلحات موضوعية: soil-water flow, Richards’ equation, inverse boundary condition problem, ODE system, Bellman-Kalaba quasilinearization, decomposition of the solution, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/12/2/299; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/e95ad7b4d2e04dd8a9368ab159776105

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Computation, Vol 11, Iss 10, p 204 (2023)

مصطلحات موضوعية: parabolic equation on partitioned domain, weighted Sobolev spaces, retrospective inverse problem, finite-difference scheme, iterative conjugate gradient method, Electronic computers. Computer science, QA75.5-76.95

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2079-3197/11/10/204; https://doaj.org/toc/2079-3197

URL الوصول: https://doaj.org/article/b19ae1f9585d4bdfaacf84bd89c893e9

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Fractal and Fractional, Vol 7, Iss 8, p 601 (2023)

مصطلحات موضوعية: parabolic PDE-ODE system, Caputo derivative, integro-differential equation, finite difference, least-squares discrepancy functional, Fréchet derivative, Thermodynamics, QC310.15-319, Mathematics, QA1-939, Analysis, QA299.6-433

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2504-3110/7/8/601; https://doaj.org/toc/2504-3110

URL الوصول: https://doaj.org/article/7f41273a681a421dab3cba040477d993

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 11, Iss 14, p 3103 (2023)

مصطلحات موضوعية: interface-coupled multispecies problem, reduced truncated problem, Sobolev spaces, positivity preservation, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/11/14/3103; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/e88410f36b3740adacdf489850ccd3eb

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Fractal and Fractional, Vol 7, Iss 6, p 443 (2023)

مصطلحات موضوعية: parabolic system, time-fractional derivative, porous media, parameter estimation, optimization, gradient method, Thermodynamics, QC310.15-319, Mathematics, QA1-939, Analysis, QA299.6-433

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2504-3110/7/6/443; https://doaj.org/toc/2504-3110

URL الوصول: https://doaj.org/article/a5ab639224634af88c7e53fc329691ca

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Fractal and Fractional, Vol 7, Iss 4, p 326 (2023)

مصطلحات موضوعية: Caputo fractional derivative, problems on disjoint domains, inverse problems, external boundary conditions, difference scheme, Thermodynamics, QC310.15-319, Mathematics, QA1-939, Analysis, QA299.6-433

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2504-3110/7/4/326; https://doaj.org/toc/2504-3110

URL الوصول: https://doaj.org/article/9486d2106f464104aec91e06af6ae349

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 11, Iss 9, p 2040 (2023)

مصطلحات موضوعية: surface layer of atmosphere, Caputo derivative, dispersion of pollutants, boundary degeneration, maximum principle, finite-difference scheme, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/11/9/2040; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/73cdaf85abc74678b8b2d4b530fe7c35

المؤلفون: Mikhail K. Kolev, Miglena N. Koleva, Lubin G. Vulkov

المصدر: Mathematics, Vol 10, Iss 1, p 131 (2022)

مصطلحات موضوعية: cancer cells migration, finite difference method, positivity preserving, evolution, conservation laws, Mathematics, QA1-939

وصف الملف: electronic resource

Relation: https://www.mdpi.com/2227-7390/10/1/131; https://doaj.org/toc/2227-7390

URL الوصول: https://doaj.org/article/a0ba9fe835404604ad70c7607d813f3a

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Symmetry, Vol 16, Iss 11, p 1507 (2024)

مصطلحات موضوعية: heat equations with spherical symmetry, well-posedness, boundary source inverse problems, space point constraint, finite difference schemes, solution decomposition, Mathematics, QA1-939

Relation: https://www.mdpi.com/2073-8994/16/11/1507; https://doaj.org/toc/2073-8994; https://doaj.org/article/2421b8e2a781455fa099025d7206774f

الاتاحة: https://doi.org/10.3390/sym16111507
https://doaj.org/article/2421b8e2a781455fa099025d7206774f

المؤلفون: Miglena N. Koleva, Lubin G. Vulkov

المصدر: Symmetry ; Volume 16 ; Issue 10 ; Pages: 1396

مصطلحات موضوعية: multispecies, symmetric diffusion, multilayer, interface relations, well-posed direct problem, inverse boundary condition problem, exponential finite difference scheme

وصف الملف: application/pdf

Relation: Mathematics; https://dx.doi.org/10.3390/sym16101396

الاتاحة: https://doi.org/10.3390/sym16101396

المؤلفون: Atanas Z. Atanasov, Miglena N. Koleva, Lubin G. Vulkov

المصدر: Symmetry, Vol 15, Iss 12, p 2099 (2023)

مصطلحات موضوعية: forage bee losses, spatial differential difference equation, final time constraint, inverse problem, ODEs system, non-local forward problem, Mathematics, QA1-939

Relation: https://www.mdpi.com/2073-8994/15/12/2099; https://doaj.org/toc/2073-8994; https://doaj.org/article/6f5f4c36f3f347d781305cb5c2605397

الاتاحة: https://doi.org/10.3390/sym15122099
https://doaj.org/article/6f5f4c36f3f347d781305cb5c2605397

المؤلفون: Miglena N. Koleva, Tihomir Gyulov

المصدر: Applied Numerical Mathematics. 172:525-545

مصطلحات موضوعية: Numerical Analysis, Applied Mathematics, Numerical analysis, MathematicsofComputing_NUMERICALANALYSIS, Computational Mathematics, symbols.namesake, Nonlinear system, Rate of convergence, Complementarity theory, Ordinary differential equation, symbols, Applied mathematics, Penalty method, Nonlinear complementarity problem, Newton's method, Mathematics

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::f1e69f02b97eb40d5092feb610dee9b5
https://doi.org/10.1016/j.apnum.2021.11.002

المؤلفون: Atanas Z. Atanasov, Miglena N. Koleva, Lubin Vulkov

المصدر: Modelling and Development of Intelligent Systems ISBN: 9783031270338

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::43ab2c4a629a5982b4b1ed04b1a5e74b
https://doi.org/10.1007/978-3-031-27034-5_19