Results 141 to 150 of about 172,315 (161)

Fractional diffusion and fractional heat equation

Advances in Applied Probability, 2000
This paper introduces a fractional heat equation, where the diffusion operator is the composition of the Bessel and Riesz potentials. Sharp bounds are obtained for the variance of the spatial and temporal increments of the solution. These bounds establish the degree of singularity of the sample paths of the solution.
Angulo, J. M., Ruiz-Medina, M. D., Anh, V. V., Grecksch, W.   +3 more
openaire   +1 more source

A Fractional Diffusion Model with Resetting

2019
We consider a model that serves as a paradigm for a class of search strategies in which the searcher having explored its environment unsuccessfully for a while, returns to its initial position and begins a new search. The model describes the diffusive motion of a particle, performing a random walk with Levy distributed jump lengths, which is ...
Ercília Sousa, Amal K. Das
openaire   +1 more source

Behavior of fractional diffusion at the origin

Physical Review E, 2003
The present work discusses the fractional diffusion equation based on the Riemann-Liouville fractional time derivatives. It was shown that the normalization conservation constraint leads to the divergency of diffusive agent concentration at the origin. This divergency implies an external source of the diffusive agent at r-->0.
openaire   +2 more sources

Reprint of: Boundary conditions for fractional diffusion

Journal of Computational and Applied Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boris Baeumer, Mihály Kovács, Mark M. Meerschaert, Harish Sankaranarayanan   +3 more
openaire   +2 more sources

Fractional diffusion equations and anomalous diffusion

Contemporary Physics, 2018
Luiz Roberto Evangelista, Ervin Kaminski Lenzi   +1 more
openaire   +2 more sources

Modeling hourly solar diffuse fraction on a horizontal surface based on sky conditions clustering

Energy, 2023
Ziyang Hao
exaly  

Diffuse radiation and cloud fraction relationships in two contrasting Amazonian rainforest sites

Agricultural and Forest Meteorology, 2010
Mark New, Yadvinder Malhi, Nathalie Butt   +2 more
exaly  

A simple and reliable empirical model with two predictors for estimating 1-minute diffuse fraction

Solar Energy, 2019
Eugenia Paulescu, Robert Blaga
exaly  

Comparative study of various correlations in estimating hourly diffuse fraction of global solar radiation

Renewable Energy, 2006
C P Jacovides
exaly  

Prediction of hourly and daily diffuse fraction using neural network, as compared to linear regression models

Energy, 2007
Yosry A Azzam, Hamdy K Elminir
exaly