Results 31 to 40 of about 172,315 (161)
Journal of Computational Acoustics, 2001 By fractional diffusive waves we mean the solutions of the so-called time-fractional diffusion-wave equation. This equation is obtained from the classical D'Alembert wave equation by replacing the second-order time derivative with a fractional derivative of order β∈(0,2) and is expected to govern evolution processes intermediate between diffusion and ...
Mainardi, F, Paradisi, Paolo
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Frontiers in Earth Science, 2022 Aerosol loading and cloud cover can alter the composition of radiation reaching the Earth’s surface and affect the ecosystem’s carbon cycle. In this study, we established an empirical model of the diffuse radiation fraction (Kd) based on a clearness ...
Xiaoqing Deng +6 more
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Journal of Mathematical Analysis and Applications, 2013 Pearson diffusions are governed by diffusion equations with polynomial coefficients. Fractional Pearson diffusions are governed by the corresponding time-fractional diffusion equation. They are useful for modeling sub-diffusive phenomena, caused by particle sticking and trapping.
Leonenko, Nikolai N. +2 more
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Energies, 2020 Solar radiation data is essential for the development of many solar energy applications ranging from thermal collectors to building simulation tools, but its availability is limited, especially the diffuse radiation component.
Raghuram Kalyanam, Sabine Hoffmann
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Fractional reaction-diffusion equation [PDF]
The Journal of Chemical Physics, 2003 A fractional reaction-diffusion equation is derived from a continuous time random walk model when the transport is dispersive. The exit from the encounter distance, which is described by the algebraic waiting time distribution of jump motion, interferes with the reaction at the encounter distance. Therefore, the reaction term has a memory effect.
Seki, Kazuhiko +2 more
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Subordination pathways to fractional diffusion [PDF]
The European Physical Journal Special Topics, 2011 20 pages, 4 ...
R. Gorenflo, MAINARDI, FRANCESCO
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Fractional Diffusion on Bounded Domains
Fractional Calculus and Applied Analysis, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Defterli, Ozlem +5 more
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On the evolution of fractional diffusive waves [PDF]
Ricerche di Matematica, 2019 12 pages, 11 ...
Armando Consiglio, Francesco Mainardi
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Direct effect of aerosols on solar radiation and gross primary production in boreal and hemiboreal forests [PDF]
Atmospheric Chemistry and Physics, 2018 The effect of aerosol loading on solar radiation and the subsequent effect on photosynthesis is a relevant question for estimating climate feedback mechanisms.
E. Ezhova +21 more
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Energies, 2017 We analyze the output of various state-of-the-art irradiance models for photovoltaic systems. The models include two sun position algorithms, three types of input data time series, nine diffuse fraction models and five transposition models (for tilted ...
Martin Hofmann, Gunther Seckmeyer
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