AbstractSmooth concentration fields and balance equations for systems of random walkers are obtained by using the coarsegrained space‐time averaging method…

AbstractRandom walk methods are suitable to build up convergent solutions for reaction-diffusion problems and were successfully applied to simulations of transport…

AbstractThe methods which track particles to simulate concentrations are successfully used in problems for large scale transport in groundwater, mainly…

Abstract ? AuthorsN. Suciu Institute of Applied Mathematics, Martensstraße 3, Erlangen, Germany C. Vamoş Tiberiu Popoviciu” Institute of Numerical Analysis,…

AbstractDarcy velocities for lognormal hydraulic conductivity with small variance and finite correlation length were approximated by periodic random fields. Accurate…

AbstractLongitudinal dispersion coefficients in given realizations of the transport computed by two currently used approximations of the first‐order in velocity…

AbstractThe nature of one of the fundamental components of the Universe, dark matter, is still unknown. One interesting possibility is that dark matter could exist in the form of a…

AbstractIn this paper we study some properties of the solutions of a second order system of functional-differential equations with maxima, of mixed type, with “boundary” conditions. We use the weakly…

AbstractWe consider a probability distribution depending on a real parameter x. As functions of x, the Renyi entropy and the Tsallis entropy can be expressed in terms of the associated…