Results 41 to 50 of about 2,249 (157)

Using Convolutional Neural Networks for the Classification of Suboptimal Chest Radiographs

open access: yesJournal of Medical Radiation Sciences, Volume 73, Issue 1, Page 60-68, March 2026.
This study evaluated DenseNet121 and YOLOv8 neural networks in detecting suboptimal chest x‐rays for quality control. Through training, validation, and testing, both AI models effectively classified chest X‐ray quality, highlighting the potential to provide radiographers with feedback to enhance image quality.
Emily Huanke Liu   +2 more
wiley   +1 more source

Quantum interference among vortex bound states in superconductors

open access: yesNew Journal of Physics
In a recent experiment (Hou et al 2025 Phys. Rev. X 15 011027), a new type of necklace-like vortex bound state (VBS) was observed and attributed to disorder induced interference among different Caroli–de Gennes–Matricon (CdGM) states within one single ...
Yi-Ming Fu, Da Wang, Qiang-Hua Wang
doaj   +1 more source

A numerical study of the laminar necklace vortex system and its effect on the wake for a circular cylinder

open access: yesPhysics of Fluids, 2012
Large eddy simulation (LES) is used to investigate the structure of the laminar horseshoe vortex (HV) system and the dynamics of the necklace vortices as they fold around the base of a circular cylinder mounted on the flat bed of an open channel for Reynolds numbers defined with the cylinder diameter, D, smaller than 4460. The study concentrates on the
Kirkil, Gökhan, Constantinescu, George
openaire   +2 more sources

Changes in Spatial Distribution and Abundance Together Determine Potential for Population Persistence for Greater Sage‐Grouse

open access: yesDiversity and Distributions, Volume 32, Issue 3, March 2026.
ABSTRACT Aim Population ecologists often focus on changes in the distribution and abundance of wildlife species, which are useful for trend analyses and status assessments. However, rarely are these responses evaluated simultaneously for a single species, despite their unique contributions to fully assess a species' viability.
Megan C. Milligan   +8 more
wiley   +1 more source

Globally-Linked Vortex Clusters in Trapped Wave Fields

open access: yes, 2002
We put forward the existence of a rich variety of fully stationary vortex structures, termed H-clusters, made of an increasing number of vortices nested in paraxial wave fields confined by trapping potentials.
A. Ashkin   +35 more
core   +1 more source

The Nature, Structure, and Perception of Illumination

open access: yesPhilosophy and Phenomenological Research, Volume 112, Issue 1, Page 175-192, January 2026.
ABSTRACT Illumination is a defining characteristic of natural environments, yet its nature and spatial structure remain poorly understood. I argue first that illumination is not simply light: it is an emergent, ecologically significant kind. Illumination has features not possessed by light, and contains self‐organizing structures that persist through ...
Will Davies
wiley   +1 more source

Cosmic Necklaces from String Theory [PDF]

open access: yes, 2007
We present the properties of a cosmic superstring network in the scenario of flux compactification. An infinite family of strings, the (p,q)-strings, are allowed to exist.
Leblond, Louis, Wyman, Mark
core   +4 more sources

Probing Superfluidity with Quantum Vortex Necklaces

open access: yes
8 pages, 5 ...
Richaud, Andrea, Massignan, Pietro
openaire   +2 more sources

Bridged Conductive Nanofibrous Membrane Overcoming the Porosity‐Conductivity Trade‐Off for Electrothermal Air Purification

open access: yesAdvanced Science, Volume 12, Issue 47, December 18, 2025.
To overcome the porosity‐conductivity trade‐off in conductive porous membranes, a conductive nanofibrous membrane bridged by self‐assembled PPy nanowires is constructed, integrating multiscale porosity with continuous electron pathways. This material‐structure‐function strategy achieves low‐resistance and high‐efficiency filtration combined with ...
Xiaoxue Yao   +10 more
wiley   +1 more source

A Generalisation of the Nielsen-Olesen Vortex: Non-cylindrical strings in a modified Abelian-Higgs model

open access: yes, 2011
We modify the standard Abelian-Higgs model by introducing spatially-dependent couplings for the scalar and vector fields. We investigate static, non-cylindrically symmetric solutions of the resulting field equations and propose a pinch solution which ...
Lake, Matthew, Ward, John
core   +1 more source

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