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Now showing items 1-10 of 49

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Sturm–Liouville systems for the survival probability in first-passage time problems 

Pagnini, G.Autoridad BCAM; Dahlenburg, M.Autoridad BCAM (2023-11-15)
We derive a Sturm–Liouville system of equations for the exact calculation of the survival probability in first-passage time problems. This system is the one associated with the Wiener–Hopf integral equation obtained from ...
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Fire-spotting modelling in operational wildfire simulators based on cellular automata: a comparison study 

López-De-Castro, M; Trucchia, A.; Morra di Cella, U; Fiorucci, P; Cardillo, A; Pagnini, G.Autoridad BCAM (2023-07-31)
One crucial mechanism in the spread of wildfires is the so-called fire-spotting: a random phenomenon which occurs when embers are transported over large distances. Fire-spotting speeds up the Rate of Spread and starts new ...
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Predicting the arrival of the unpredictable: An approach for foreseeing the transition to chaos of wildfire propagation 

Mampel, J.Autoridad BCAM; Egorova, V.; Pagnini, G.Autoridad BCAM (2023-07-07)
A discrete map for modelling wildfire propagation is derived from a prototypical reaction-diffusion equation for the temperature field. We show that, for a constant fuel concentration at the fire-front, the heat transfer ...
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Wiener-Hopf Integral Equations in Mean First-passage Time Problems for Continuous-time Random Walks 

Dahlenburg, M.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2023)
We study the mean first-passage time (MFPT) for asymmetric continuous time random walks in continuous space characterised by finite mean waiting times and jump amplitudes with both finite average and finite variance. We ...
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Exact calculation of the mean first-passage time of continuous-time random walks by nonhomogeneous Wiener-Hopf integral equations 

Dahlenburg, M.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2022-12-23)
We study the mean first-passage time (MFPT) for asymmetric continuous-time random walks in continuous-space characterised by waiting-times with finite mean and by jump-sizes with both finite mean and finite variance. In ...
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Fire-spotting generated fires. Part II: The role of flame geometry and slope 

Egorova, V.; Trucchia, A.; Pagnini, G.Autoridad BCAM (2022)
This is the second part of a series of two papers concerning fire-spotting generated fires. While, in the first part, we focus on the impact of macro-scale factors on the growth of the burning area by considering the ...
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Anomalous diffusion originated by two Markovian hopping-trap mechanisms 

Vitali, S.Autoridad BCAM; Paradisi, P.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2022)
We show through intensive simulations that the paradigmatic features of anomalous diffusion are indeed the features of a (continuous-time) random walk driven by two different Markovian hopping-trap mechanisms. If $p ...
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A high-resolution fuel type mapping procedure based on satellite imagery and neural networks: Updating fuel maps for wildfire simulators 

López-De-Castro, M.; Prieto-Herráez, D.; Asensio-Sevilla, M.I.; Pagnini, G.Autoridad BCAM (2022)
A major limitation in the simulation of forest fires involves the proper characterization of the surface vegetation over the study area, based on land cover maps. Unfortunately, these maps may be outdated, with areas where ...
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The Fokker–Planck equation of the superstatistical fractional Brownian motion with application to passive tracers inside cytoplasm 

Runfola, C.; Vitali, S.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2022)
By collecting from literature data experimental evidence of anomalous diffusion of passive tracers inside cytoplasm, and in particular of subdiffusion of mRNA molecules inside live Escherichia coli cells, we obtain the ...
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The tempered space-fractional Cattaneo equation 

Beghin, L.; Garra, R.; Mainardi, F.; Pagnini, G.Autoridad BCAM (2022)
We consider the time-fractional Cattaneo equation involving the tempered Caputo space-fractional derivative. There is an increasing interest in the recent literature for the applications of the fractional-type Cattaneo ...
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Pagnini, G. (49)
Trucchia, A. (15)Egorova, V. (9)Vitali, S. (9)Paradisi, P. (7)Mentrelli, A. (5)Sposini, V. (5)Castellani, G. (3)Chechkin, A.V. (3)Dahlenburg, M. (3)... másSubjectanomalous diffusion (11)fractional diffusion (7)Fire spotting (4)continuous-time random walk (3)Fire-spotting (3)Wildfire propagation (3)biological transport (2)fractional brownian motion (2)Gaussian Process (2)generalized grey Brownian motion (2)... másFecha2020 - 2023 (16)2013 - 2019 (33)

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