Results 101 to 110 of about 508,325 (367)

A class of self-similar stochastic processes with stationary increments to model anomalous diffusion in physics [PDF]

, 2007
Antonio Mura, Francesco Mainardi
openalex   +1 more source

Fourier Mass Lower Bounds for Batchelor‐Regime Passive Scalars

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT Batchelor predicted that a passive scalar ψν$\psi ^\nu$ with diffusivity ν$\nu$, advected by a smooth fluid velocity, should typically have Fourier mass distributed as |ψ̂ν|2(k)≈|k|−d$|\widehat{\psi }^\nu |^2(k) \approx |k|^{-d}$ for |k|≪ν−1/2$|k| \ll \nu ^{-1/2}$.
William Cooperman, Keefer Rowan
wiley   +1 more source

Quenching the Hubbard Model: Comparison of Nonequilibrium Green's Function Methods

Contributions to Plasma Physics, EarlyView.
ABSTRACT We benchmark nonequilibrium Green's function (NEGF) approaches for interaction quenches in the half‐filled Fermi–Hubbard model in one and two dimensions. We compare fully self‐consistent two‐time Kadanoff–Baym equations (KBE), the generalized Kadanoff–Baym ansatz (GKBA), and the recently developed NEGF‐based quantum fluctuations approach (NEGF‐
Jan‐Philip Joost, Christopher Makait, Alexander Osterkorn, Erik Schroedter   +3 more
wiley   +1 more source

Far-From-Equilibrium Time Evolution between Two Gamma Distributions

Entropy, 2017
Many systems in nature and laboratories are far from equilibrium and exhibit significant fluctuations, invalidating the key assumptions of small fluctuations and short memory time in or near equilibrium.
Eun-jin Kim, Lucille-Marie Tenkès, Rainer Hollerbach, Ovidiu Radulescu   +3 more
doaj   +1 more source

A perspective review of applications of the computed tomography (CT) scan imaging technique for microscopic reservoir rock characterization

Deep Underground Science and Engineering, EarlyView.
In this review, the application of micro‐CT and medical‐CT scanning in the oil and gas industry has been thoroughly discussed. Recent improvements in DRP and modern imaging techniques in the oil and gas industry have been modeled using both experimental and simulation work.
Achinta Bera, Bharadwaj Shukla, Dhruvikkumar Jogani   +2 more
wiley   +1 more source

LÉVY-BASED ERROR PREDICTION IN CIRCULAR SYSTEMATIC SAMPLING

Image Analysis and Stereology, 2013
In the present paper, Lévy-based error prediction in circular systematic sampling is developed. A model-based statistical setting as in Hobolth and Jensen (2002) is used, but the assumption that the measurement function is Gaussian is relaxed.
Kristjana Ýr Jónsdóttir, Eva B. Vedel Jensen   +1 more
doaj   +1 more source

The time-domain analysis of a continuous parameter weakly stationary stochastic process [PDF]

, 1962
P. Masani, Jack Robertson
openalex   +1 more source

Studying interspecific population synchrony: current status and future perspectives

Ecography, EarlyView.
Interspecific population synchrony, or co‐fluctuations in the population dynamics and demographic parameters of different species, is an important ecological phenomenon with major implications for the stability of communities and ecosystems. It is also central in the context of biodiversity loss, as interspecific synchrony can influence how ecological ...
Ragnhild Bjørkås, Ivar Herfindal, Marlène Gamelon, Aline Magdalena Lee   +3 more
wiley   +1 more source

On the maximum of a normal stationary stochastic process [PDF]

, 1962
Harald Cramér
openalex   +1 more source

Stationary Gaussian stochastic processes

, 2021
Jeg presenterer litt av teorien om stokastiske prosesser. Jeg presenterer et bevis for det spektrale representasjonsteoremet for stasjonære, Gaussiske prosesser og anvender det til å studere andre-ordens, lineære, stokastiske differensialligninger.
openaire   +1 more source