Results 101 to 110 of about 893,377 (238)

Vortex Interaction and Roll-Up in Unsteady Flow past Tandem Airfoils

open access: yesJournal of Applied Fluid Mechanics, 2016
A discrete vortex model coupled with a vortex dissipation and vortex core criteria is used to study the unsteady flow past two airfoils in configuration.
H. Aziz, R. Mukherjee
doaj  

The 21 cm Signature of Shock Heated and Diffuse Cosmic String Wakes

open access: yes, 2012
The analysis of the 21 cm signature of cosmic string wakes is extended in several ways. First we consider the constraints on $G\mu$ from the absorption signal of shock heated wakes laid down much later than matter radiation equality.
A. Sornborger   +24 more
core   +1 more source

Posttraumatic stress disorder factor structure in hurricane‐affected Puerto Ricans: A PTSD Checklist for DSM‐5 comparison with non‐Latiné White individuals

open access: yesJournal of Traumatic Stress, Volume 39, Issue 1, Page 44-56, February 2026.
Abstract Due to Puerto Rico's location, there is heightened vulnerability to the consequences of natural disasters, contributing to an elevated risk of posttraumatic stress disorder (PTSD). Given PTSD's heterogeneous nature, this study examined whether PTSD factor structure, based on DSM‐5 criteria and measured using the PTSD Checklist for DSM‐5 (PCL‐5)
Johanna E. Hidalgo   +12 more
wiley   +1 more source

The Cerenkov effect revisited: from swimming ducks to zero modes in gravitational analogs

open access: yes, 2012
We present an interdisciplinary review of the generalized Cerenkov emission of radiation from uniformly moving sources in the different contexts of classical electromagnetism, superfluid hydrodynamics, and classical hydrodynamics.
A. Amo   +74 more
core   +1 more source

The Asymmetric Hydrodynamic Structure of a Wind‐Dominated River Plume

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract This study investigates the velocity and salinity structure of the large surface‐attached, low‐latitude, and microtidal plume of the Magdalena River (southern Caribbean Sea) during a period of high freshwater discharge and variable wind conditions. The plume was analyzed through observations at multiple transects along, across, and diagonal to
Ó. Álvarez‐Silva   +6 more
wiley   +1 more source

Improved explicit finite difference method for extended shallow water partial differential equation

open access: yesPartial Differential Equations in Applied Mathematics
The shallow water and Boussinesq equations, being highly nonlinear coupled partial differential equations, form a significant basis for the simulation of flow phenomena within the surface and subsurface domains. The application of these equations extends
Saeed Ahmed Rajput   +3 more
doaj   +1 more source

A Direct and Fast Methodology for Ship Recognition in Sentinel-2 Multispectral Imagery

open access: yesRemote Sensing, 2016
The European Space Agency satellite Sentinel-2 provides multispectral images with pixel sizes down to 10 m. This high resolution allows for ship detection and recognition by determining a number of important ship parameters.
Henning Heiselberg
doaj   +1 more source

The effect of ram pressure on the star formation, mass distribution and morphology of galaxies

open access: yes, 2009
We investigate the dependence of star formation and the distribution of the components of galaxies on the strength of ram pressure. Several mock observations in X-ray, H$\alpha$ and HI wavelength for different ram-pressure scenarios are presented.
Ferrari, C.   +4 more
core   +3 more sources

Analytical Model of Velocity Distribution and Penetration Characteristics in Water‐Level Fluctuation Zone With Vegetation

open access: yesWater Resources Research, Volume 62, Issue 2, February 2026.
Abstract As a critical ecological transition zone between aquatic and terrestrial ecosystems, the water‐level fluctuation zone significantly influences flow structure through vegetation morphology. Conventional analytical velocity models inadequately address the variation in vegetation with water depth.
An‐Qi Li   +6 more
wiley   +1 more source

Basic models of farfield ship waves in shallow water

open access: yesJournal of Ocean Engineering and Science, 2018
Basic models of the farfield waves created by a monohull ship or a catamaran that travels at a constant speed in calm water of uniform finite depth are considered.
Yi Zhu   +4 more
doaj   +1 more source

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