Results 101 to 110 of about 10,226,544 (213)

Turbulent Intermittency in a Random Fiber Laser

open access: yesAtoms, 2019
In fluid turbulence, intermittency is the emergence of non-Gaussian tails in the distribution of velocity increments in small space and/or time scales. Intermittence is thus expected to gradually disappear as one moves from small to large scales. Here we
Antônio M. S. Macêdo   +4 more
doaj   +1 more source

The Effect of Using Write‐Zoom for Volume Flow Measurements in Haemodialysis Fistulas

open access: yesSonography, Volume 13, Issue 3, September 2026.
ABSTRACT Introduction Arteriovenous fistulas (AVFs) are crucial for patients undergoing haemodialysis, yet about 25% fail to mature or experience early failure. Ultrasound is key in managing AVFs, with volume flow (Qa) serving as a predictor of maturation.
Nikki Kong   +4 more
wiley   +1 more source

Double-passage propagation of laser beams in non-Kolmogorov turbulence

open access: yes, 2016
In the atmospheric boundary layer, with some exceptions very close to the ground, optical turbulence is homogeneous and isotropic obeying the Kolmogorov power spectrum model of the refractive index within the inertial sub-range.
Toselli, Italo   +3 more
core   +1 more source

A Hybrid LSTM‐KAN Framework With Dynamic Residual and Adaptive Grid for Robust Wind Speed Forecasting

open access: yesWind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT Accurate wind speed forecasting is indispensable for the efficient integration of wind power into the electrical grid, optimizing turbine scheduling, and ensuring grid stability. Existing models, such as Long Short‐Term Memory (LSTM) networks, often struggle to capture the highly nonlinear relationships and long‐range dependencies present in ...
Guangjie Liu   +3 more
wiley   +1 more source

Laser guide stars and turbulence profiling for extremely large telescopes [PDF]

open access: yes, 2006
The next generation of ground based telescopes, the so-called extremely large telescopes, will offer a significant leap in sensitivity and resolution compared to current telescopes. They also present a range of technical challenges.
Butterley, Timothy
core  

An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

open access: yesInternational Journal of Optics, 2020
This paper proposes an empirical model of the angle-of-arrival (AOA) variance for a Gaussian wave propagating through the weak non-Kolmogorov turbulence.
Chao Gao, Libin Jiao, Xiaofeng Li
doaj   +1 more source

Process‐Based Model Parameters for Post‐Fire Snow Hydrology: Looking Beyond Snow Albedo and Vegetation

open access: yesWater Resources Research, Volume 62, Issue 9, September 2026.
Abstract Wildfires fundamentally alter snow accumulation and melt dynamics by modifying forest canopy structure, snow albedo, and snowpack physical properties. Despite the growing body of work on fire impacts on snow, few studies have used physically based models to simulate post‐fire changes, and none have examined the global parameter sensitivities ...
Arielle Koshkin   +2 more
wiley   +1 more source

Which attributes of restored oyster reefs provide the best habitat for sportfish?

open access: yesRestoration Ecology, Volume 34, Issue 7, September 2026.
Abstract Introduction Restoration practitioners seek to restore oyster ecosystems as habitat designed for species targeted by recreational fisheries, but they require information on which specific habitat parameters of oyster reefs are preferred by fish.
Matthew S. Kendall   +6 more
wiley   +1 more source

Numerical Study of the Effect of Freestream Turbulence on by-pass Transition in a Boundary Layer [PDF]

open access: yes, 2014
We use direct numerical simulations in the presence of free-stream turbulence having different values of intensity, T u, and integral length scale, L, in order to determine which kind of structures are involved in the path to transition of a boundary ...
Robinet, Jean Christophe   +3 more
core   +1 more source

Vertical Wind‐Pressure Covariance and its Vertical Gradient in Atmospheric Boundary Layers From Large Eddy Simulations

open access: yesGeophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Atmospheric wind‐pressure covariances (e.g., vertical wind‐pressure covariance, w′p′‾ $\overline{{w}^{\mathit{\prime }}{p}^{\mathit{\prime }}}$) affect boundary‐layer energetics and pressure‐related corrections, yet their sign and vertical structure are inconsistently reported.
Yanzhao Zhou, Heping Liu, Xin Li
wiley   +1 more source

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