@article{MTMT:37094829,
	title = {The Science of the Einstein Telescope},
	url = {https://m2.mtmt.hu/api/publication/37094829},
	author = {Abac, A. and Abramo, R. and Albanesi, S. and Albertini, A. and Agapito, A. and Agathos, M. and Albertus, C. and Andersson, N. and Andrade, T. and Andreoni, I. and Angeloni, F. and Antonelli, M. and Antoniadis, J. and Antonini, F. and Sedda, M.A. and Celeste, Artale M. and Ascenzi, S. and Auclair, P. and Bachetti, M. and Badger, C. and Banerjee, B. and Barba-González, D. and Barta, Dániel and Bartolo, N. and Bauswein, A. and Begnoni, A. and Beirnaert, F. and Bejger, M. and Belgacem, E. and Bellomo, N. and Bernard, L. and Bernardini, M.G. and Bernuzzi, S. and Berry, C.P. and Berti, E. and Bertone, G. and Bettoni, D. and Bezares, M. and Bhagwat, S. and Bisero, S. and Blanco-Pillado, J.J. and Blasi, S. and Bonino, A. and Borghese, A. and Borghi, N. and Borhanian, S. and Bortolas, E. and Botticella, M.T. and Branchesi, M. and Breschi, M. and Brito, R. and Brocato, E. and Broekgaarden, F.S. and Bulik, T. and Buonanno, A. and Burgio, F. and Burrows, A. and Calcagni, G. and Canevarolo, S. and Cappellaro, E. and Capurri, G. and Carbone, C. and Casadio, R. and Cayuso, R. and Cerdá-Durán, P. and Char, P. and Chaty, S. and Chiarusi, T. and Chruslinska, M. and Cireddu, F. and Cole, P. and Colombo, A. and Colpi, M. and Compère, G. and Contaldi, C. and Corman, M. and Crescimbeni, F. and Cristallo, S. and Cuoco, E. and Cusin, G. and Canton, T.D. and Dálya, Gergely and D'Avanzo, P. and Davari, N. and Luca, V.D. and Renzis, V.D. and Valle, M.D. and Pozzo, W.D. and Santi, F.D. and Santis, A.L.D. and Dietrich, T. and Dimastrogiovanni, E. and Domenech, G. and Doneva, D. and Drago, M. and Dupletsa, U. and Duval, H. and Dvorkin, I. and Elias-Rosa, N. and Fairhurst, S. and Fantina, A.F. and Fasiello, M. and Fays, M. and Fender, R. and Fischer, T. and Foucart, F. and Fragos, T. and Foffa, S. and Franciolini, G. and Fumagalli, J. and Gair, J. and Gamba, R. and Garcia-Bellido, J. and García-Quirós, C. and Gergely, Árpád László and Ghirlanda, G. and Ghosh, A. and Giacomazzo, B. and Gittins, F. and Giudice, I.F. and Goncharov, B. and Gonzalez, A. and Goriély, S. and Graziani, L. and Greco, G. and Gualtieri, L. and Guidi, G.M. and Gupta, I. and Haney, M. and Hannam, M. and Harms, J. and Harutyunyan, A. and Haskell, B. and Haungs, A. and Hazra, N. and Hemming, G. and Heng, I.S. and Hinderer, T. and van, der Horst A. and Hu, Q. and Husa, S. and Iacovelli, F. and Illuminati, G. and Inguglia, G. and Villalba, D.I. and Janquart, J. and Janssens, K. and Jenkins, A.C. and Jones, I. and Kacskovics, Balázs and Klessen, R.S. and Kokkotas, K. and Kuan, H.-J. and Kumar, S. and Kuroyanagi, S. and Laghi, D. and Lamberts, A. and Lambiase, G. and Larrouturou, F. and Leaci, P. and Lenzi, M. and Levan, A. and Li, T. and Li, Y. and Liang, D. and Limongi, M. and Liu, B. and Llanes-Estrada, F.J. and Loffredo, E. and Long, O. and Lope-Oter, E. and Lukes-Gerakopoulos, G. and Maggio, E. and Maggiore, M. and Mancarella, M. and Mapelli, M. and Marchant, P. and Margiotta, A. and Mariotti, A. and Marriott-Best, A. and Marsat, S. and Martínez-Pinedo, G. and Maselli, A. and Mastrogiovanni, S. and Matos, I. and Melandri, A. and Mendes, R.F. and de, Souza J.M.S. and Mentasti, G. and Mezcua, M. and Mösta, P. and Mondal, C. and Moresco, M. and Mukherjee, T. and Muttoni, N. and Nagar, A. and Narola, H. and Nava, L. and Moreno, P.N. and Nelemans, G. and Nielsen, A.B. and Nissanke, S. and Obergaulinger, M. and Oertel, M. and Oganesyan, G. and Onori, F. and Pacilio, C. and Pagliaroli, G. and Palomba, C. and Pang, P.T. and Pani, P. and Papalini, L. and Patricelli, B. and Patruno, A. and Pedrotti, A. and Perego, A. and Pérez-García, M.A. and Périgois, C. and Perna, G. and Péroux, C. and Perret, J. and Perrodin, D. and Pesci, A. and Pfeiffer, H.P. and Piccinni, O.J. and Pieroni, M. and Piranomonte, S. and Pompili, L. and Porter, E. and Porto, R.A. and Pound, A. and Powell, J. and Puech, M. and Pratten, G. and Puecher, A. and Pujolas, O. and Quartin, M. and Raduta, A.R. and Ramos-Buades, A. and Rase, A. and Razzano, M. and Rea, N. and Regimbau, T. and Renzini, A. and Rettegno, P. and Ricciardone, A. and Riotto, A. and Romero-Rodriguez, A. and Ronchini, S. and Rosinska, D. and Rossi, A. and Roy, S. and Rubiera-Garcia, D. and Rubio, J. and Ruiz-Lapuente, P. and Sagun, V. and Sakellariadou, M. and Salafia, O.S. and Samajdar, A. and Sanchis-Gual, N. and Sanna, A. and Santoliquido, F. and Sathyaprakash, B. and Schmidt, P. and Schmidt, S. and Schneider, F.R. and Schneider, R. and Sedrakian, A. and Servant, G. and Sevrin, A. and Shao, L. and Silva, H.O. and Simakachorn, P. and Smartt, S. and Sotiriou, T.P. and Spera, M. and Stamerra, A. and Steer, D.A. and Steinhoff, J. and Stergioulas, N. and Sturani, R. and Suárez, D. and Suresh, J. and Swain, S. and Tagliazucchi, M. and Tamanini, N. and Tasinato, G. and Tauris, T.M. and Tissino, J. and Tomaselli, G.M. and Toonen, S. and Torres-Forné, A. and Turski, C. and Ugolini, C. and Vagenas, E.C. and Dall’Armi, L.V. and Valenti, E. and Valiante, R. and Broeck, C.V.D. and van, de Meent M. and van, Son L.A. and Vanvlasselaer, M. and Vaglio, M. and Varma, V. and Veitch, J. and Vaskonen, V. and Vergani, S.D. and Wils, M. and Witek, H. and Wong, I.C. and Yazadjiev, S. and Yim, G. and Acernese, F. and Ahn, H. and Allocca, A. and Amato, A. and Andrés-Carcasona, M. and Avallone, G. and Bachlechner, M. and Baer, P. and Bagnasco, S. and Balbi, G. and Barone, F. and Benedetti, E. and Benning, C. and Bini, S. and Salcedo, J.L.B. and Bozza, V. and Bruno, M. and Butz, T. and Califano, M. and Calloni, E. and Carapella, G. and Cardini, A. and Subrahmanya, S.C. and Chiadini, F. and Chiummo, A. and Cianetti, S. and Ciani, G. and Coccia, E. and Contu, A. and Cornelissen, R. and Cozzumbo, A. and Croney, L. and Crosta, M. and D'Agostino, R. and Danilishin, S. and D'Antonio, S. and Bolle, J.D. and Degallaix, J. and Laurentis, M.D. and della, Monica R. and Marco, F.D. and de, Martino I. and Rosa, R.D. and Salvo, R.D. and Simone, R.D. and Detavernier, C. and Diaferia, G. and Cesare, M.D. and Fiore, L.D. and Giovanni, M.D. and Pace, S.D. and Docherty, J. and D'Urso, D. and Mecherfi, O.E. and Errico, L. and Fabrizi, F. and Fafone, V. and Fanti, V. and Fittipaldi, R. and Fiumara, V. and Freise, A. and Funk, S. and Gaedtke, M. and Garufi, F. and Gerberding, O. and Giangrandi, E. and Giunchi, C. and Graham, V. and Granata, M. and Granata, V. and Green, A. and Haughian, K. and Heisenberg, L. and Hennig, M. and Hild, S. and Hoang, V.L. and Holland, N. and Iannone, G. and Isleif, K.-S. and Joppe, R. and Kim, C.-H. and Kim, C. and Kim, K. and Korb, E. and Korobko, M. and Kranzhoff, L. and Kuhlbusch, T. and Lacaille, G. and Lartaux-Vollard, A. and Lavezzi, L. and Laycock, P. and Lee, S. and Lee, S. and Lee, S. and Losurdo, G. and Lucchesi, L. and Lück, H. and Macquet, A. and Majorana, E. and Mangano, V. and Martelli, F. and Martin, I. and Martinez, M. and Masoni, A. and Massaro, L. and Melini, D. and Mercurio, A. and Mereni, L. and Miller, A.L. and Mirasola, L. and Mitchell, A. and Molinari, I. and Montani, M. and Mow-Lowry, C. and Murgia, R. and Murray, P.G. and Muscas, G. and Naticchioni, L. and Nela, A. and Nery, M. and Niggemann, T. and Nippe, N. and Novak, J. and Numic, A. and Olivieri, M. and Orsini, M. and Park, J.G. and Pascucci, D. and Perreca, A. and Piergiovanni, F. and Pierro, V. and Pinard, L. and Pinto, I. and Punturo, M. and Puppo, P. and Quochi, F. and Rading, R.O. and Rapagnani, P. and Ricci, M. and Rodrigues, D. and Romano, R. and Rozza, D. and Saffarieh, P. and Santucci, F. and Schramm, S. and Schwab, B. and Sequino, V. and Neto, L.S. and Silenzi, L. and Sintes, A.M. and Sopuerta, C.F. and Spencer, A. and Stahl, A. and Steinlechner, J. and Steinlechner, S. and Szabó, Róbert and Thümmler, T. and Tofani, E. and Torniamenti, S. and Travaglini, R. and Trozzo, L. and Paola, Vaccaro M. and Valentini, M. and Ván, Péter and van, Dongen J. and van, Heijningen J. and van, Ranst Z. and Vardaro, M. and Verdier, P. and Vernieri, D. and Wagner, N. and Woehler, J. and Wolf, J. and Zavattini, G. and Zink, A. and Zmija, A.},
	doi = {10.1088/1475-7516/2026/03/081},
	journal-iso = {J COSMOL ASTROPART P},
	journal = {JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS},
	volume = {2026},
	unique-id = {37094829},
	issn = {1475-7516},
	abstract = {Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science objectives, providing state-of-the-art predictions for the capabilities of ET in both geometries currently under consideration, a single-site triangular configuration or two L-shaped detectors. We discuss the impact that ET will have on domains as broad and diverse as fundamental physics, cosmology, early Universe, astrophysics of compact objects, physics of matter in extreme conditions, and dynamics of stellar collapse. We discuss how the study of extreme astrophysical events will be enhanced by multi-messenger observations. We highlight the ET synergies with ground-based and space-borne GW observatories, including multi-band investigations of the same sources, improved parameter estimation, and complementary information on astrophysical or cosmological mechanisms obtained combining observations from different frequency bands. We present advancements in waveform modeling dedicated to third-generation observatories, along with open tools developed within the ET Collaboration for assessing the scientific potentials of different detector configurations. We finally discuss the data analysis challenges posed by third-generation observatories, which will enable access to large populations of sources and provide unprecedented precision. © 2026 The Author(s)},
	keywords = {Gravitational wave detectors; gravitational waves / sources; gravitational waves / theory; gravitational waves / experiments},
	year = {2026},
	eissn = {1475-7516},
	orcid-numbers = {Barta, Dániel/0000-0001-6841-550X; Dálya, Gergely/0000-0003-3258-5763; Gergely, Árpád László/0000-0003-3146-6201; Szabó, Róbert/0000-0002-3258-1909; Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:36416899,
	title = {Identifying correlations between metal foam thermal characteristics and non-Fourier behavior},
	url = {https://m2.mtmt.hu/api/publication/36416899},
	author = {Fehér, Anna Éva and Cseh, Dániel and Kovács, Róbert Sándor},
	doi = {10.1016/j.icheatmasstransfer.2025.110008},
	journal-iso = {INT COMMUN HEAT MASS},
	journal = {INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER},
	volume = {170},
	unique-id = {36416899},
	issn = {0735-1933},
	abstract = {Due to their low density and large specific surface area, metal foams are increasingly used as cellular materials that combine excellent structural and thermal properties. Their cellular structure makes them particularly suitable for use in heat exchangers, insulation, and fire protection layers. The heat transport that takes place within them is a complex phenomenon characterized by the simultaneous presence of heat conduction, heat transfer, and heat radiation, making their modeling a significant challenge. The aim of the research is to develop a one-dimensional, time-dependent, discrete numerical model capable of describing the effective thermal behavior of metal foams. The model takes into account heat conduction through the solid phase, conductive heat transfer in the closed cavities, thermal radiation between the pore walls, and by-passing heat conduction around the cavity. The results highlight that geometric features such as cavity size and arrangement have a significant impact on temperature distribution and confirm that classical Fourier-based models are not accurately applicable to porous materials. We found that the proposed one-dimensional approach is eligible to reproduce the experimentally observed non-Fourier effects for which modeling the Guyer–Krumhansl equations is a proper candidate. Identifying correlations between the thermal diffusivity and metal foam parameters, we showed that the emerging effective non-Fourier behavior is not purely a material property but depends on the geometrical structure as well.},
	year = {2026},
	eissn = {1879-0178},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:36959701,
	title = {High-Precision Teleoperated Rotating Mechanism for the Eötvös Torsion Balance},
	url = {https://m2.mtmt.hu/api/publication/36959701},
	author = {Kiss, Bálint and Péter, Gábor and Tóth, Gyula and Völgyesi, Lajos and Szondy, György and Fenyvesi, Edit and Barnaföldi, Gergely Gábor and Lévai, Péter and Kovács, Péter and Pszota, Máté and Imre, Emőke and Ván, Péter},
	doi = {10.1007/978-3-032-14074-6_8},
	journal-iso = {MECHANISMS AND MACHINE SCIENCE},
	journal = {MECHANISMS AND MACHINE SCIENCE},
	volume = {199},
	unique-id = {36959701},
	issn = {2211-0984},
	abstract = {The Eötvös (or often Eötvös-Pekár) torsion balance was designed to experimentally show equivalence between gravitational and inertial mass in physics. Since the measuring principle can also be exploited to determine the local gradient of the gravitational field, such devices were also widely used to detect underground oil resources roughly a century ago. To provide more accurate measurements, the device’s operation has been recently automated, which eliminates the necessity for human readings and manual rotations to change the azimuth of the balance. The paper presents a tailor-made, programmable rotation mechanism using a high-accuracy (under 0.7 arcsecond) optical rotation sensor designed to smoothly turn the apparatus and record the azimuths with high precision. The rotation device needs to meet special specifications due to the physics of the measurement. The device’s architecture, its simple control algorithm and the supervision and teleoperation software are presented, and the operational experiences are discussed.},
	year = {2026},
	eissn = {2211-0992},
	pages = {84-91},
	orcid-numbers = {Tóth, Gyula/0000-0002-0280-9060; Völgyesi, Lajos/0000-0002-3196-4887; Fenyvesi, Edit/0000-0003-2777-3719; Kovács, Péter/0000-0003-3735-7620; Pszota, Máté/0009-0008-4247-2918; Imre, Emőke/0000-0001-6746-027X; Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:37069287,
	title = {VRFB cellában lejátszódó hővezetési és hőátadási folyamatok effektív modellezése kéthőmérsékletű modellel},
	url = {https://m2.mtmt.hu/api/publication/37069287},
	author = {Szücs, Mátyás},
	journal-iso = {ENGA},
	journal = {ENERGIAGAZDÁLKODÁS},
	volume = {67},
	unique-id = {37069287},
	issn = {0021-0757},
	year = {2026},
	pages = {30-35},
	orcid-numbers = {Szücs, Mátyás/0000-0002-2492-0392}
}

@article{MTMT:36300608,
	title = {Comparative analysis of lumped parameter and one-dimensional continuum models for droplet evaporation at elevated pressures and temperatures},
	url = {https://m2.mtmt.hu/api/publication/36300608},
	author = {Csemány, Dávid and Kovács, Róbert Sándor},
	doi = {10.1016/j.icheatmasstransfer.2025.109547},
	journal-iso = {INT COMMUN HEAT MASS},
	journal = {INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER},
	volume = {169},
	unique-id = {36300608},
	issn = {0735-1933},
	abstract = {Droplet evaporation plays a critical role in a wide range of industrial and technological applications, from combustion engines to spray coating and refrigeration. While Eulerian-Lagrangian models are widely used for predicting droplet behavior, they often assume a uniform internal temperature, which may not be valid under high-temperature and high-pressure conditions. This study compares the traditional lumped parameter model (LPM) with a novel one-dimensional model employing a staggered grid (1D-SG) approach. Both models are applied to water droplets in air over a broad range of initial diameters, relative velocities, and ambient pressures and temperatures. The analysis evaluates deviations in droplet lifetime and evaporation rate between the two approaches, emphasizing the influence of Biot number, which is more sensitive to pressure than to temperature. Results show that LPM remains accurate for small droplets and low convection conditions, with deviations under 1 %. However, for larger droplets and enhanced convection, discrepancies in evaporation rate and lifetime reach up to 6 % and 8 %, respectively. The findings demonstrate that while LPM is computationally efficient, its applicability depends on droplet size and flow conditions. The proposed 1D-SG model offers a more physically consistent alternative when higher accuracy is required, providing guidance for model selection in spray-related simulations.},
	year = {2025},
	eissn = {1879-0178},
	orcid-numbers = {Csemány, Dávid/0000-0002-5103-5540; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:36074073,
	title = {GENERIC-motivated extended symplectic numerical methods for dissipative mechanical systems: A concrete example and general messages},
	url = {https://m2.mtmt.hu/api/publication/36074073},
	author = {Fülöp, Tamás and Szücs, Mátyás and Takács, Donát M.},
	doi = {10.32973/jcam.2025.001},
	journal-iso = {JCAM},
	journal = {JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS},
	volume = {20},
	unique-id = {36074073},
	issn = {1586-2070},
	abstract = {The GENERIC (General Equation for the Non-Equilibrium Reversible-Irreversible Coupling) framework is used, first, to present the irreversible thermodynamical formulation of the Rayleigh potential, and, subsequently, to realize the dynamical equations of motion of a supercritical van der Waals fluid separated from the environment by a movable rigid piston. Motivated by the latter, a quasi-symplectic generalization of the symplectic Euler finite-difference numerical scheme is introduced for this setup. A remarkable advantage over the explicit Euler scheme regarding artificial numerical antidissipation is illustrated. The possibility of controlled artificial numerical damping is addressed. The quasi-symplectic scheme is proven to enable efficient simulation of the considerably nonlinear and sensitive processes near the liquid-vapour critical point. A numerically feasible quantitative measure of nonlinearity of time-dependent processes is introduced and applied.},
	year = {2025},
	eissn = {2732-0189},
	pages = {3-33},
	orcid-numbers = {Fülöp, Tamás/0000-0003-2708-7065; Szücs, Mátyás/0000-0002-2492-0392; Takács, Donát M./0000-0002-8463-745X}
}

@article{MTMT:37071195,
	title = {The Kluitenberg-Verhás model of viscoelasticity and its irreversible thermodynamical consistency via rheological energy},
	url = {https://m2.mtmt.hu/api/publication/37071195},
	author = {Fülöp, Tamás},
	doi = {10.32973/jcam.2025.004},
	journal-iso = {JCAM},
	journal = {JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS},
	volume = {20},
	unique-id = {37071195},
	issn = {1586-2070},
	abstract = {Rocks and plastics are two examples of classes of materials where theKluitenberg–Verh´as model of viscoelasticity has proved adequate for describing the observedmechanical behaviour. This model cannot be interpreted as a generalized Maxwell model,and requires in fact a novel rheological circuit element beyond the spring and the dashpot.Moreover, its thermodynamical consistency leads to nontrivial inequality conditions on themodel coefficients, ignoring which would lead to violation of the second law of thermodynamics and would thus be a principal source of instability of numerical solutions. The presentpaper explores the role of the rheological energy contribution embedded in the Kluitenberg–Verh´as model, in a didactic and application-oriented way. The explicit meaning of theinvolved irreversible thermodynamical additional state variable – internal degree of freedom– is identified. Neither thermal expansion nor heat conduction is neglected, enhancing theapplicability of the constructed framework.},
	year = {2025},
	eissn = {2732-0189},
	pages = {93-116},
	orcid-numbers = {Fülöp, Tamás/0000-0003-2708-7065}
}

@article{MTMT:35419433,
	title = {Thermodynamics and dynamic stability: extended theories of heat conduction},
	url = {https://m2.mtmt.hu/api/publication/35419433},
	author = {Somogyfoki, Réka and Famá, Alessio and Restuccia, Liliana and Ván, Péter},
	doi = {10.1515/jnet-2024-0041},
	journal-iso = {J NON-EQUIL THERMODY},
	journal = {JOURNAL OF NON-EQUILIBRIUM THERMODYNAMICS},
	volume = {50},
	unique-id = {35419433},
	issn = {0340-0204},
	abstract = {The stability of homogeneous thermodynamic equilibrium is analyzed in heat conduction theories in the framework of nonequilibrium thermodynamics, where the internal energy, the heat flux and a second order tensor are thermodynamic state variables. It is shown, that the thermodynamic conditions of concave entropy and nonnegative entropy production can ensure the linear stability. Various special heat conduction theories, including Extended Thermodynamics, are compared in the general framework.},
	year = {2025},
	eissn = {1437-4358},
	pages = {59-76},
	orcid-numbers = {Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:36868366,
	title = {Volume in the Extensive Thermodynamics of Black Holes: AdS and Kiselev Spacetimes},
	url = {https://m2.mtmt.hu/api/publication/36868366},
	author = {Somogyfoki, Réka and Ván, Péter},
	doi = {10.5506/APhysPolBSupp.18.6-A12},
	journal-iso = {ACTA PHYS POL B PROC SUPPL},
	journal = {ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT},
	volume = {18},
	unique-id = {36868366},
	issn = {1899-2358},
	abstract = {Since black holes lack a straightforward notion of geometrical volume due to their event horizon structure and coordinate dependence, various approaches have been proposed to introduce a meaningful geometric and thermodynamic volume. In this work, we investigate the stability conditions of AdS black holes with and without volume.},
	year = {2025},
	eissn = {2082-7865},
	orcid-numbers = {Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:34726196,
	title = {Improving the accuracy of the Newmark method through backward error analysis},
	url = {https://m2.mtmt.hu/api/publication/34726196},
	author = {Takács, Donát M. and Fülöp, Tamás},
	doi = {10.1007/s00466-024-02580-3},
	journal-iso = {COMPUT MECH},
	journal = {COMPUTATIONAL MECHANICS},
	volume = {75},
	unique-id = {34726196},
	issn = {0178-7675},
	abstract = {We use backward error analysis for differential equations to obtain modified or distorted equations describing the behaviour of the Newmark scheme applied to the transient structural dynamics equation. Based on the newly derived distorted equations, we give expressions for the numerically or algorithmically distorted stiffness and damping matrices of a system simulated using the Newmark scheme. Using these results, we show how to construct compensation terms from the original parameters of the system, which improve the performance of Newmark simulations. The required compensation terms turn out to be slight modifications to the original system parameters (e.g. the damping or stiffness matrices), and can be applied without changing the time step or modifying the scheme itself. Two such compensations are given: one eliminates numerical damping, while the other achieves fourth-order accurate calculations using the traditionally second-order Newmark method. The performance of both compensation methods is evaluated numerically to demonstrate their validity, and they are compared to the uncompensated Newmark method, the generalized-α method and the 4th-order Runge–Kutta scheme. © The Author(s) 2024.},
	year = {2025},
	eissn = {1432-0924},
	pages = {1585-1606},
	orcid-numbers = {Takács, Donát M./0000-0002-8463-745X; Fülöp, Tamás/0000-0003-2708-7065}
}

@article{MTMT:36161803,
	title = {The piston effect in supercritical fluids investigated via a reversible–irreversible vector field splitting-based explicit time integration scheme},
	url = {https://m2.mtmt.hu/api/publication/36161803},
	author = {Takács, Donát M. and Fülöp, Tamás and Kovács, Róbert Sándor and Szücs, Mátyás},
	doi = {10.1063/5.0271333},
	journal-iso = {PHYS FLUIDS},
	journal = {PHYSICS OF FLUIDS},
	volume = {37},
	unique-id = {36161803},
	issn = {1070-6631},
	abstract = {In the vicinity of the liquid–vapor critical point, supercritical fluids behave strongly compressible and, in parallel, thermophysical properties have strong state dependence. These lead to various peculiar phenomena, one of which is the piston effect where a sudden heating induces a mechanical pulse. The coupling between thermal and mechanical processes, in the linear approximation, yields a non-trivially rich thermoacoustics. The numerous applications of supercritical fluids raise the need for a reliable yet fast and efficient numerical solution for thermoacoustic time and space dependence in this sensitive domain. Here, we present a second-order accurate, fully explicit staggered space–time grid finite difference method for such coupled linear thermoacoustic problems. Time integration is based on the splitting of the state space vector field representing the interactions that affect the dynamics into reversible and irreversible parts, which splitting procedure leads to decoupled wave and heat equations. The former is a hyperbolic partial differential equation, while the latter is a parabolic one; therefore, different time integration algorithms must be amalgamated to obtain a reliable, dispersion error-free, and dissipation error-free numerical solution. Finally, the thermoacoustic approximation of the supercritical piston effect is investigated via the developed method.},
	year = {2025},
	eissn = {1089-7666},
	orcid-numbers = {Takács, Donát M./0000-0002-8463-745X; Fülöp, Tamás/0000-0003-2708-7065; Kovács, Róbert Sándor/0000-0001-5822-6035; Szücs, Mátyás/0000-0002-2492-0392}
}

@article{MTMT:36178057,
	title = {Improving Discrete Numerical Methods for Dynamics Using Continuous Mathematical Tools},
	url = {https://m2.mtmt.hu/api/publication/36178057},
	author = {Takács, Donát M. and Fülöp, Tamás},
	doi = {10.4028/p-11TtO6},
	journal-iso = {ADV SCI TECHNOL},
	journal = {ADVANCES IN SCIENCE AND TECHNOLOGY},
	volume = {165},
	unique-id = {36178057},
	issn = {1662-8969},
	abstract = {We briefly review backward error analysis as a useful mathematical technique for improving numerical methods used for solving ordinary differential equations describing dynamical systems. Then, we show how backward error analysis-based compensation, an approach recently introduced by the authors, can be applied to the second-order Newmark method for eliminating numerical damping and achieving fourth-order convergence. The presented improvements only require modifying the physical parameters of the system and the excitation, while the Newmark method is left intact. We compare the performance of the resulting improvements with that of several other numerical methods, including a novel partitioned method based on local extrapolation.},
	year = {2025},
	eissn = {1662-0356},
	pages = {21-30},
	orcid-numbers = {Takács, Donát M./0000-0002-8463-745X; Fülöp, Tamás/0000-0003-2708-7065}
}

@article{MTMT:36214178,
	title = {On the coordinate system-dependence of the accuracy of symplectic numerical methods},
	url = {https://m2.mtmt.hu/api/publication/36214178},
	author = {Takács, Donát M. and Fülöp, Tamás},
	doi = {10.33993/jnaat542-1577},
	journal-iso = {J NUMER ANA. APPROX THEORY},
	journal = {JOURNAL OF NUMERICAL ANALYSIS AND APPROXIMATION THEORY},
	volume = {54},
	unique-id = {36214178},
	issn = {2457-6794},
	abstract = {Symplectic numerical methods have become a widely-used choice for the accurate simulation of Hamiltonian systems in various fields, including celestial mechanics, molecular dynamics and robotics. Even though their characteristics are well-understood mathematically, relatively little attention has been paid in general to the practical aspect of how the choice of coordinates affects the accuracy of the numerical results, even though the consequences can be computationally significant.
		The present article aims to fill this gap by giving a systematic overview of how coordinate transformations can influence the results of simulations performed using symplectic methods. We give a derivation for the non-invariance of the modified Hamiltonian of symplectic methods under coordinate transformations, as well as a sufficient condition for the non-preservation of a first integral corresponding to a cyclic coordinate for the symplectic Euler method. We also consider the possibility of finding order-compensating coordinate transformations that improve the order of accuracy of a numerical method. Various numerical examples are presented throughout.},
	year = {2025},
	eissn = {2501-059X},
	pages = {315-344},
	orcid-numbers = {Takács, Donát M./0000-0002-8463-745X; Fülöp, Tamás/0000-0003-2708-7065}
}

@{MTMT:36227399,
	title = {Improving Discrete Numerical Methods for Dynamics Using Continuous Mathematical Tools},
	url = {https://m2.mtmt.hu/api/publication/36227399},
	author = {Takács, Donát M. and Fülöp, Tamás},
	booktitle = {The 10th International Scientific Conference on Advances in Mechanical Engineering (ISCAME)},
	unique-id = {36227399},
	abstract = {We briefly review backward error analysis as a useful mathematical technique for improving numerical methods used for solving ordinary differential equations describing dynamical systems. Then, we show how backward error analysis-based compensation, an approach recently introduced by the authors, can be applied to the second-order Newmark method for eliminating numerical damping and achieving fourth-order convergence. The presented improvements only require modifying the physical parameters of the system and the excitation, while the Newmark method is left intact. We compare the performance of the resulting improvements with that of several other numerical methods, including a novel partitioned method based on local extrapolation.},
	year = {2025},
	pages = {235-244},
	orcid-numbers = {Takács, Donát M./0000-0002-8463-745X; Fülöp, Tamás/0000-0003-2708-7065}
}

@article{MTMT:37062261,
	title = {Initial state dependence of thermo-mechanical coupling in heat conduction near the liquid-vapor critical point},
	url = {https://m2.mtmt.hu/api/publication/37062261},
	author = {Tóth, Kristóf and Szücs, Mátyás},
	doi = {10.32973/jcam.2025.003},
	journal-iso = {JCAM},
	journal = {JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS},
	volume = {20},
	unique-id = {37062261},
	issn = {1586-2070},
	abstract = {In the vicinity of the liquid–vapor critical point, fluids behave strongly compressible, and their thermophysical parameters exhibit significant state-dependence leading to anintense coupling of the mechanical and the thermal processes. For instance, the piston effectis a coupled thermo-acoustic phenomenon, when close to a heated surface a thermal boundary layer forms in the fluid, which expands due to the relatively large value of the isobaricthermal expansion coefficient. Accordingly, the expansion of the boundary layer caused byits temperature change excites pressure waves in the fluid, which transports thermal energyduring its propagation, too. Therefore, the propagation of the temperature at the speed ofsound can be observed, in contrast to the delayed nature of the diffusive heat propagation.In this study, an effective heat conduction model is investigated in the linear approximation,which neglects the acoustic propagation, but considers the effect of thermal expansion. Weidentify and analyze the state-dependent parameters influencing the dynamics and explorehow the initial conditions affect the process through numerical simulations.},
	year = {2025},
	eissn = {2732-0189},
	pages = {71-92},
	orcid-numbers = {Szücs, Mátyás/0000-0002-2492-0392}
}

@article{MTMT:35683742,
	title = {Biró Tamás Sándor: Gintropy (A fiction on inequality)},
	url = {https://m2.mtmt.hu/api/publication/35683742},
	author = {Ván, Péter},
	journal-iso = {FIZIKAI SZEMLE},
	journal = {FIZIKAI SZEMLE},
	volume = {75},
	unique-id = {35683742},
	issn = {0015-3257},
	year = {2025},
	eissn = {1588-0540},
	pages = {36-36},
	orcid-numbers = {Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:36492878,
	title = {Ropolyi László – Szegedi Péter szerkesztők Fényes Imre válogatott írásai},
	url = {https://m2.mtmt.hu/api/publication/36492878},
	author = {Ván, Péter},
	doi = {10.1556/2065.186.2025.12.24},
	journal-iso = {MAGYAR TUDOMÁNY},
	journal = {MAGYAR TUDOMÁNY},
	volume = {186},
	unique-id = {36492878},
	issn = {0025-0325},
	year = {2025},
	eissn = {1588-1245},
	pages = {2535-2539},
	orcid-numbers = {Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:36868541,
	title = {Some remarks on the objectivity and thermodynamic consistency of Korteweg-type fluids},
	url = {https://m2.mtmt.hu/api/publication/36868541},
	author = {Ván, Péter},
	doi = {10.56082/annalsarscimath.2025.3.257},
	journal-iso = {Annals of the Academy of Romanian Scientists. Mathematics and its Applications},
	journal = {Annals of the Academy of Romanian Scientists. Mathematics and its Applications},
	volume = {17},
	unique-id = {36868541},
	issn = {2066-5997},
	year = {2025},
	eissn = {2066-6594},
	pages = {257-267},
	orcid-numbers = {Ván, Péter/0000-0002-9396-4073}
}

@article{MTMT:34746761,
	title = {Sustainable printed circuit board substrates based on flame-retarded PLA/flax composites to reduce environmental load of electronics: Quality, reliability, degradation and application tests},
	url = {https://m2.mtmt.hu/api/publication/34746761},
	author = {Farkas, Csaba and Gál, László and Csiszár, András and Grennerat, Vincent and Jeannin, Pierre-Olivier and Xavier, Pascal and Rigler, Dániel and Krammer, Olivér and Plachy, Zbynek and Dusek, Karel and Kovács, Róbert Sándor and Fehér, Anna Éva and Géczy, Attila},
	doi = {10.1016/j.susmat.2024.e00902},
	journal-iso = {SUSTAINABLE MATERIALS TECHNOLOGIES},
	journal = {SUSTAINABLE MATERIALS AND TECHNOLOGIES},
	volume = {40},
	unique-id = {34746761},
	issn = {2214-9929},
	abstract = {The present paper introduces a novel, sustainable approach to produce an eco-friendly Printed Circuit Board (PCB) substrate; a substitute for traditional substrates, to significantly reduce e-waste. We present the prepreg technology, the road to actual circuit assembly with application studies, life cycle analysis (LCA), and sustainability analysis. The flame-retarded prepregs and resulting PCB assemblies were based on polylactic acid (PLA), the structure is reinforced with flax textiles. After copper lamination, subtractive PCB production was performed, and thermal and mechanical reliability was investigated in the case of both laminated and bare substrates. Steps of surface roughness, peel and thermal analysis followed. After a new set of assemblies, the post-assembly analysis was extended with further shear strength analysis on the soldered components and mass analysis regarding thermal processes. The evaluation showed that PLA/Flax substrates provide reliable structural performance up to 200 °C in the reflow soldering process; this allows limited but stabilized application possibilities with specific eco-friendly lead-free solders. A basic blinker circuit and a field programmable gate array (FPGA)–based design was produced and tested; the latter has the general complexity of a commercial circuit. A vol% and wt% analysis extended our discussion with a reduction of harmful components in waste in the range of 90%, which is a disruptive and significant result. Life cycle analysis (LCA) quantified the ecological impact of the assembly, highlighting a significant ease on environmental load (∼10%) for the total assembly. Finally, a qualitative degradation study was introduced to the prepared samples to investigate short-term stability with mechanical-, colour-, mass- and scanning electron microscopy (structure) analysis. Early results show that the boards can withstand the harsh environment of a composting bin for a few days, but in the time of a few weeks, degradation starts, pointing to eventual decomposition. The work directly connects with multiple sustainability development goals. © 2024 The Authors},
	keywords = {life cycle; scanning electron microscopy; recycling; Substrates; Surface roughness; Thermoanalysis; environmental protection; Electric network analysis; Sustainable development; Soldering; Electronic equipment; Field programmable gate arrays (FPGA); Waste reduction; Lead-free solders; Environmental loads; Electronic waste; PCB; Printed circuit boards; Eco-friendly; Timing circuits; E-wastes; sustainable electronics; Flame-retarded; Biodegradable PCB; Environmentally-friendly electronics; Biodegradable printed circuit board; E-waste reduction; E-waste reduction; Environmentally-friendly electronic; Printed circuit board substrate; Printed circuit board substrate},
	year = {2024},
	eissn = {2214-9937},
	orcid-numbers = {Kovács, Róbert Sándor/0000-0001-5822-6035; Fehér, Anna Éva/0000-0002-2366-6388}
}

@article{MTMT:34691294,
	title = {Challenges in the thermal modeling of highly porous carbon foams},
	url = {https://m2.mtmt.hu/api/publication/34691294},
	author = {Fehér, Anna Éva and Kovács, Róbert Sándor and Sudár, Ákos and Barnaföldi, Gergely Gábor},
	doi = {10.1007/s10973-024-12927-w},
	journal-iso = {J THERM ANAL CALORIM},
	journal = {JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY},
	volume = {149},
	unique-id = {34691294},
	issn = {1388-6150},
	abstract = {The heat pulse (flash) experiment is a well-known, widely used method to determine thermal diffusivity. However, for heterogeneous, highly porous materials, neither the measurement nor the evaluation methodologies are straightforward. In the present paper, we focus on two open-cell carbon foam types, differing in their porosity but having the same sample size. Recent experiments showed that a non-Fourier behavior, called ’over-diffusive’ propagation, can be present for such a complex structure. The (continuum) Guyer–Krumhansl equation stands as a promising candidate to model such transient thermal behavior. In order to obtain a reliable evaluation and thus reliable thermal parameters, we utilize a novel, state-of-the-art evaluation procedure developed recently using an analytical solution of the Guyer–Krumhansl equation. Based on our observations, it turned out that the presence of high porosity alone is necessary but not satisfactory for non-Fourier behavior. Additionally, the mentioned non-Fourier effects are porosity-dependent; however, porous samples can also follow the Fourier law on a particular time scale. These data serve as a basis to properly identify the characteristic heat transfer mechanisms and their corresponding time scales, which altogether result in the present non-Fourier behavior. Based on these, we determined the validity region of Fourier’s law in respect of time scales.},
	year = {2024},
	eissn = {1588-2926},
	pages = {3605-3616},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:34755651,
	title = {Thermal and mechanical properties of AlSi7Mg matrix syntactic foams reinforced by Al2O3 or SiC particles in matrix},
	url = {https://m2.mtmt.hu/api/publication/34755651},
	author = {Fehér, Anna Éva and Maróti, János Endre and Takács, Donát M. and Orbulov, Imre Norbert and Kovács, Róbert Sándor},
	doi = {10.1016/j.ijheatmasstransfer.2024.125446},
	journal-iso = {INT J HEAT MASS TRANS},
	journal = {INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER},
	volume = {226},
	unique-id = {34755651},
	issn = {0017-9310},
	year = {2024},
	eissn = {1879-2189},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Takács, Donát M./0000-0002-8463-745X; Orbulov, Imre Norbert/0000-0002-5358-0630; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:34733253,
	title = {On the dynamic thermal conductivity and diffusivity observed in heat pulse experiments},
	url = {https://m2.mtmt.hu/api/publication/34733253},
	author = {Fehér, Anna Éva and Kovács, Róbert Sándor},
	doi = {10.1515/jnet-2023-0119},
	journal-iso = {J NON-EQUIL THERMODY},
	journal = {JOURNAL OF NON-EQUILIBRIUM THERMODYNAMICS},
	volume = {49},
	unique-id = {34733253},
	issn = {0340-0204},
	abstract = {Determining the thermal properties of materials with complex structures is still a major engineering challenge today. The well-known heat pulse experiment can be used to determine the thermal diffusivity by measuring the temperature history as a thermal response for a fast excitation. However, the evaluation of the measurements can be challenging, especially when dealing with non-homogeneous samples. The thermal behavior of such heterogeneous materials may exhibit a response including two-time scales. Therefore, the Fourier equation is not necessarily applicable. The simplest possible alternatives are the 2-temperature models the Guyer–Krumhansl and Jeffreys heat equations. In the present paper, we focus on the interpretation of the Jeffreys heat equation; studying its analytical solution, we present a fitting method for determining the unknown parameters. We also discuss its relation with the other two heat equations, and we offer an interpretation of how to characterize the transient response of heterogeneous materials.},
	year = {2024},
	eissn = {1437-4358},
	pages = {161-170},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:35149914,
	title = {A hővezetés törvényének újragondolása - Mérnöki kihívások a mindennapokban},
	url = {https://m2.mtmt.hu/api/publication/35149914},
	author = {Fehér, Anna Éva},
	journal-iso = {ÉLET ÉS TUDOMÁNY},
	journal = {ÉLET ÉS TUDOMÁNY},
	volume = {79},
	unique-id = {35149914},
	issn = {0013-6077},
	year = {2024},
	eissn = {1418-1665},
	pages = {915-917},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388}
}

@article{MTMT:35472736,
	title = {Szintaktikus fémhabok termikus és mechanikai tulajdonságai, valamint alkalmazhatóságuk fázisváltó hőtároló rendszerekben},
	url = {https://m2.mtmt.hu/api/publication/35472736},
	author = {Fehér, Anna Éva and Kovács, Róbert Sándor and Kun-Balog, Attila and Maróti, János Endre and Orbulov, Imre Norbert and Sztankó, Krisztián Endre and Szücs, Mátyás and Balog, Róbert and Takács, Donát M.},
	journal-iso = {ENGA},
	journal = {ENERGIAGAZDÁLKODÁS},
	volume = {65},
	unique-id = {35472736},
	issn = {0021-0757},
	year = {2024},
	pages = {34-39},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Kovács, Róbert Sándor/0000-0001-5822-6035; Orbulov, Imre Norbert/0000-0002-5358-0630; Szücs, Mátyás/0000-0002-2492-0392; Takács, Donát M./0000-0002-8463-745X}
}

@article{MTMT:35659955,
	title = {Szintaktikus fémhabok termikus és mechanikai tulajdonságai, valamint alkalmazhatóságuk fázisváltó hőtároló rendszerekben},
	url = {https://m2.mtmt.hu/api/publication/35659955},
	author = {Fehér, Anna Éva and Kovács, Róbert Sándor and Kun-Balog, Attila and Maróti, János Endre and Orbulov, Imre Norbert and Sztankó, Krisztián Endre and Szücs, Mátyás and Balog, Róbert and Takács, Donát M.},
	journal-iso = {ENGA},
	journal = {ENERGIAGAZDÁLKODÁS},
	volume = {65},
	unique-id = {35659955},
	issn = {0021-0757},
	year = {2024},
	pages = {6-11},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Kovács, Róbert Sándor/0000-0001-5822-6035; Orbulov, Imre Norbert/0000-0002-5358-0630; Szücs, Mátyás/0000-0002-2492-0392; Takács, Donát M./0000-0002-8463-745X}
}