Results 1 to 10 of about 126,578 (268)
Mathematical model of non-stationary diffusion – advection of radon in the soil – atmosphere system [PDF]
E3S Web of Conferences, 2023 A one-dimensional mathematical model of non-stationary diffusion - advection of radon in the soil - atmosphere system is considered. Using the integral Laplace transform, an analytical solution of the mathematical model was obtained and, on its basis ...
Parovik Roman
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Mathematics, 2022 A non-linear fractional Selkov dynamic system for mathematical modeling of microseismic phenomena is proposed. This system is a generalization of the previously known Selkov system, which has self-oscillatory modes and is used in biology to describe ...
Roman Ivanovich Parovik
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Noise resilient exceptional-point voltmeters enabled by oscillation quenching phenomena
Nature Communications, 2023 Exceptional point degeneracies (EPD) of linear non-Hermitian systems have been recently utilized for hypersensitive sensing. This proposal exploits the sublinear response that the degenerate frequencies experience once the system is externally perturbed.
Arunn Suntharalingam +3 more
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Operational Assimilation of Spectral Wave Data From the Sofar Spotter Network
Geophysical Research Letters, 2022 Historically, the sparseness of in situ open‐ocean wave and weather observations has severely limited the forecast skill of weather over the ocean with major social and economic consequences for coastal communities and maritime industries.
Isabel A. Houghton +3 more
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Energies, 2021 Numerical modeling of currents and waves is used throughout the marine energy industry for resource assessment. This study compared the output of numerical flow simulations run both as a standalone model and as a two-way coupled wave–current simulation ...
Jon Hardwick +4 more
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Modeling the waves of Covid-19 [PDF]
Acta Biotheoretica, 2021 A bstract The challenges with modeling the spread of Covid-19 are its power-type growth during the middle stages with the exponents depending on time, and the saturations mainly due to the protective measures, though weakening and partial destruction of the virus due to mutations is ...
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Models for Damped Water Waves [PDF]
SIAM Journal on Applied Mathematics, 2019 In this paper we derive some new weakly nonlinear asymptotic models describing viscous waves in deep water with or without surface tension effects. These asymptotic models take into account several different dissipative effects and are obtained from the free boundary problems formulated in the works of Dias, Dyachenko and Zakharov (Physics Letters A ...
Rafael Granero-Belinchón +1 more
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Wave modelling – The state of the art [PDF]
Progress in Oceanography, 2007 This paper is the product of the wave modelling community and it tries to make a picture of the present situation in this branch of science, exploring the previous and the most recent results and looking ahead towards the solution of the problems we presently face. Both theory and applications are considered.
Institute of Marine Sciences, Castello 1364/A Venice, Italy ( host institution ) +26 more
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Mathematics, 2023 The article considers a large-scale model of an αΩ-dynamo in the low-mode approximation. The intensity of the α-effect is regulated by a process that depends on the energy of the magnetic field and has hereditarity properties (finite “memory”).
Olga Sheremetyeva
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Nonlinear density waves in the single-wave model [PDF]
Physics of Plasmas, 2011 The single-wave model equations are transformed to an exact hydrodynamic closure by using a class of solutions to the Vlasov equation corresponding to the waterbag model. The warm fluid dynamic equations are then manipulated by means of the renormalization group method. As a result, amplitude equations for the slowly varying wave amplitudes are derived.
Marinov, Kiril B., Tzenov, Stephan I.
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