Results 41 to 50 of about 218,041 (382)

Convergence to extremal processes in random environments and extremal ageing in SK models [PDF]

open access: yes, 2012
This paper extends recent results on ageing in mean field spin glasses on short time scales, obtained by Ben Arous and Gün (Commun Pure Appl Math 65:77–127, 2012) in law with respect to the environment, to results that hold almost surely, respectively in
Anton Bovier, V. Gayrard, Adéla Švejda
semanticscholar   +1 more source

Random diffusivity from stochastic equations: comparison of two models for Brownian yet non-Gaussian diffusion

open access: yesNew Journal of Physics, 2018
A considerable number of systems have recently been reported in which Brownian yet non-Gaussian dynamics was observed. These are processes characterised by a linear growth in time of the mean squared displacement, yet the probability density function of ...
Vittoria Sposini   +4 more
doaj   +1 more source

Branching Processes in Random Environment with Sibling Dependence [PDF]

open access: yesJournal of Mathematical Sciences, 2020
We consider a population of particles with unit life length. Dying each particle produces offspring whose size depends on the random environment specifying the reproduction law of all particles of the given generation and on the number of relatives of the particle.
Vatutin, V. A., Dyakonova, E. E.
openaire   +2 more sources

Microbial Communities in a Serpentinizing Aquifer Are Assembled through Strong Concurrent Dispersal Limitation and Selection

open access: yesmSystems, 2021
In recent years, our appreciation of the extent of habitable environments in Earth’s subsurface has greatly expanded, as has our understanding of the biodiversity contained within.
Lindsay I. Putman   +7 more
doaj   +1 more source

φ-branching processes in a random environment [PDF]

open access: yesApplicationes Mathematicae, 1984
Let \(\phi\) be a function mapping the set of non-negative integers into itself such that \(\phi (0)=0\). Consider a sequence of integer valued random variables \(\{Z_ n\), \(n=0,1,...\}\) and suppose that they satisfy the condition \[ Z_ 0=m,\quad E(s^{Z_{n+1}}| {\mathcal F}_ n({\bar\xi }))=[f_{\xi_ n}(s)]^{\phi (Z_ n)},\quad n\geq 0,| s|\leq 1 ...
openaire   +2 more sources

Frequency-specific modulation of population-level frequency tuning in human auditory cortex

open access: yesBMC Neuroscience, 2009
Background Under natural circumstances, attention plays an important role in extracting relevant auditory signals from simultaneously present, irrelevant noises.
Roberts Larry E   +4 more
doaj   +1 more source

Random walk in random environment with asymptotically zero perturbation

open access: yes, 2006
We give criteria for ergodicity, transience and null recurrence for the random walk in random environment on \Z+={0,1,2,…}, with reflection at the origin, where the random environment is subject to a vanishing perturbation.
Menshikov, MV   +5 more
core   +1 more source

Branching processes in a random environment with immigration stopped at zero [PDF]

open access: yesJournal of Applied Probability, 2020
AbstractA critical branching process with immigration which evolves in a random environment is considered. Assuming that immigration is not allowed when there are no individuals in the population, we investigate the tail distribution of the so-called life period of the process, i.e. the length of the time interval between the moment when the process is
Elena Dyakonova   +3 more
openaire   +2 more sources

Multivariate analysis of functional metagenomes

open access: yesFrontiers in Genetics, 2013
Metagenomics is a primary tool for the description of microbial and viral communities. The sheer magnitude of the data generated in each metagenome makes identifying key differences in the function and taxonomy between communities difficult to elucidate.
Elizabeth A. Dinsdale   +16 more
doaj   +1 more source

Impact of Wavelet Kernels on Predictive Capability of Radiomic Features: A Case Study on COVID-19 Chest X-ray Images

open access: yesJournal of Imaging, 2023
Radiomic analysis allows for the detection of imaging biomarkers supporting decision-making processes in clinical environments, from diagnosis to prognosis. Frequently, the original set of radiomic features is augmented by considering high-level features,
Francesco Prinzi   +3 more
doaj   +1 more source

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