Academic literature on the topic 'Quasihydrodynamic approximation'

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Journal articles on the topic "Quasihydrodynamic approximation"

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Yulmetyev, R. M., V. Yu Shurygin, and T. R. Yulmetyev. "Quasihydrodynamic approximation for memory functions in non-Markovian relaxation processes in condensed matter." Physica A: Statistical Mechanics and its Applications 242, no. 3-4 (1997): 509–21. http://dx.doi.org/10.1016/s0378-4371(97)00214-8.

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Yanushkevich, V. F., K. I. Ivanova, and M. M. Ivanov. "SIMULATION OF INTERACTION OF ELECTROMAGNETIC WAVES WITH ANISOTROPIC MEDIA UNDER HYDROCARBON DEPOSITS IN THE MODE OF VIDEO-PULSE SIGNALS." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 63, no. 2 (2018): 250–56. http://dx.doi.org/10.29235/1561-8358-2018-63-2-250-256.

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The article presents the simulation of the interaction of electromagnetic waves in the mode of video pulse signals with the medium over hydrocarbon deposits. The analysis of the spectra of reflected video pulse signals from the medium over hydrocarbons is carried out. A study of the propagation of radio waves over hydrocarbons is carried out within the framework of a quasihydrodynamic approximation. The choice of the frequencies of video pulse signals is due to the determination of media characteristics over deposits at great depths compared to the surface of the earth. The spectrum of reflect
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Evseev, F. A., and S. G. Pyatkov. "Solvability of the First Initial-boundary Value Problem for the Quasihydrodynamics Equations in the Shallow Water Approximation." Lobachevskii Journal of Mathematics 45, no. 9 (2024): 4490–99. https://doi.org/10.1134/s1995080224605083.

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Bajec, Matej, Sašo Grozdanov, and Alexander Soloviev. "Spectra of correlators in the relaxation time approximation of kinetic theory." Journal of High Energy Physics 2024, no. 8 (2024). http://dx.doi.org/10.1007/jhep08(2024)065.

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Abstract The relaxation time approximation (RTA) of the kinetic Boltzmann equation is likely the simplest window into the microscopic properties of collective real-time transport. Within this framework, we analytically compute all retarded two-point Green’s functions of the energy-momentum tensor and a conserved U(1) current in thermal states with classical massless particles (a ‘CFT’) at non-zero density, and in the absence and presence of broken translational symmetry. This is done in 2 + 1 and 3 + 1 dimensions. RTA allows a full explicit analysis of the analytic structure of different corre
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Dissertations / Theses on the topic "Quasihydrodynamic approximation"

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Ільїн, С. С. "Моделювання підсилення хвиль у супергетеродинному ЛВЕ з повздовжнім електростатичним ондулятором у наближенні слабкого сигналу". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81327.

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На основі методу усереднених характеристик побудована квадратична нелінійна математична модель процесів поширення хвиль у супергетеродинному ЛВЕ з повздовжнім електростатичним ондулятором, який використовує два механізми підсилення електромагнітного сигналу. Продемонстровано, що в такому ЛВЕ відбуваються множинні трихвильові параметричні резонансні взаємодії між гармоніками хвиль просторового заряду різного типу. Побудовано комп’ютерну модель та проведено чисельний аналіз підсилювальних властивостей досліджуваного ЛВЕ. Отримано залежності інкременту підсилення лазера від параметрів системи. З’
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