Results 41 to 50 of about 2,054,434 (283)
Superfast front propagation in reactive systems with anomalous diffusion
, 2002 We study a reaction diffusion system where we consider a non-gaussian process instead of a standard diffusion. If the process increments follow a probability distribution with tails approaching to zero faster than a power law, the usual qualitative ...
A Vulpiani +14 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter +17 more
wiley +1 more source
Time-Inhomogeneous Feller-Type Diffusion Process in Population Dynamics
Mathematics, 2021 The time-inhomogeneous Feller-type diffusion process, having infinitesimal drift α(t)x+β(t) and infinitesimal variance 2r(t)x, with a zero-flux condition in the zero-state, is considered.
Virginia Giorno, Amelia G. Nobile
doaj +1 more source
Universality of the triplet contact process with diffusion
, 2013 The one-dimensional triplet contact process with diffusion (TCPD) model has been studied using fast multispin GPU Monte Carlo simulations. In particular, the particle density \rho and the density of pairs of neighboring particles \rho_p have been ...
Barkema, Gerard T., Schram, Raoul D.
core +1 more source
On Feller semigroup generated by solution of nonlocal parabolic conjugation problem
Karpatsʹkì Matematičnì Publìkacìï, 2018 The paper deals with the problem of construction of Feller semigroup for one-dimensional inhomogeneous diffusion processes with membrane placed at a point whose position on the real line is determined by a given function that depends on the time variable.
B.I. Kopytko, R.V. Shevchuk
doaj +1 more source
Gerber–Shiu Function in a Class of Delayed and Perturbed Risk Model with Dependence
Risks, 2020 This paper considers the risk model perturbed by a diffusion process with a time delay in the arrival of the first two claims and takes into account dependence between claim amounts and the claim inter-occurrence times.
Franck Adékambi, Essodina Takouda
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song +15 more
wiley +1 more source
A stochastic diffusion process for the Dirichlet distribution
, 2013 The method of potential solutions of Fokker-Planck equations is used to develop a transport equation for the joint probability of N coupled stochastic variables with the Dirichlet distribution as its asymptotic solution. To ensure a bounded sample space,
Bakosi, J., Ristorcelli, J. R.
core +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Gastrointestinal graft‐versus‐host disease (GI GVHD) following hematopoietic stem cell transplant is typically managed with medical therapy, but surgery and angioembolization may be warranted in selected cases with life‐threatening complications.
Gaia Brunetti +12 more
wiley +1 more source
Diffusion equations in inhomogeneous solid having arbitrary gradient concentration
Condensed Matter Physics, 2017 A quantum kinetic equation is obtained for an inhomogeneous solid having arbitrary gradient concentration and chemical potential. We find, starting from nonequilibrium statistical operator, a new equation to describe atom migration in solid states.
Y. Bilotsky, M. Gasik, B. Lev
doaj +1 more source