Results 101 to 110 of about 61,385 (293)

Eulerian and Lagrangian observability of point vortex flows [PDF]

Tellus A: Dynamic Meteorology and Oceanography, 2008
We study the observability of one and two-point vortex flow from one or two Eulerian or Lagrangian observations. By observability, we mean the ability to determine the locations and strengths of the vortices from the time history of the observations. An Eulerian observation is a measurement of the velocity of the flow at a fixed point in the domain of ...
openaire   +2 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Some estimates on the space scales of vortex pairs emitted from river mouths [PDF]

Nonlinear Processes in Geophysics, 2001
Two-dimensional vortex pairs are frequently observed in geophysical conditions, for example, in a shelf zone of the ocean near river mouths. The main aims of the work are to estimate the space scales of such vortex structures, to analyze possible ...
V. P. Goncharov, V. I. Pavlov
doaj  

Direct simulation of acoustic radiation with a feedback loop around a trailing edge of a curved plate with an upstream kink shape in a laminar boundary layer

Nihon Kikai Gakkai ronbunshu, 2015
Intense tonal sound radiates from flows around a trailing edge with an upstream kink shape such as found in an automotive body. To clarify the acoustic radiation mechanism and the effects of the kink shape angle on tonal sound, direct numerical ...
Hiroshi YOKOYAMA, Taishi SHINOHARA, Takahiro NAKAJIMA, Masashi MIYAZAWA, Akiyoshi IIDA   +4 more
doaj   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Evidence of fractional transport in point vortex flow

Chaos, Solitons & Fractals, 2004
Advection properties of passive particles in flows generated by point vortices are considered. Transport properties are anomalous with characteristic transport exponent $μ\sim 1.5$. This behavior is linked back to the presence of coherent fractal structures within the flow.
Leoncini, Xavier, Kuznetsov, Leonid, Zaslavsky, George M.   +2 more
openaire   +4 more sources

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Numerical study of the characteristics of linear shear flow past two square cylinders in tandem arrangement

Shui kexue jinzhan, 2018
The convective outflow boundary condition is used in the multistep characteristic-based operator-splitting(MCBOS) finite element method. A numerical model for linear shear flow past square cylinders in tandem arrangement is established.
SHUI Qingxiang, WANG Daguo, XU Bing, WANG Wei, TAN Guorong, HE Zhiliang   +5 more
doaj   +1 more source

Vortex Laser at Exceptional Point

, 2016
The optical vortices carrying orbital angular momentum (OAM) are commonly generated by modulating the available conventional light beam. This article shows that a micro-laser operates at the exceptional point (EP) of the non-Hermitian quantum system can directly emit vortex laser with well-defined OAM at will.
Wang, Xing-Yuan, Chen, Hua-Zhou, Li, Ying, Li, Bo, Ma, Ren-Min   +4 more
openaire   +2 more sources

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source