Results 81 to 90 of about 2,467,289 (274)

Exact and Fast Numerical Algorithms for the Stochastic Wave Equation [PDF]

, 2003
On the basis of integral representations we propose fast numerical methods to solve the Cauchy problem for the stochastic wave equation without boundaries and with the Dirichlet boundary conditions.
Martin, A., Prigarin, Sergej M., Winkler, Gerhard, Sergei M. Prigarin, Winkler, G., Martin, Andreas, Prigarin, S.M., Prigarin, Sergej, Andreas Martin, Gerhard Winkler   +9 more
core   +1 more source

Degenerate Drifted Wave Equations in Nondivergence Form: Nonlinear Stabilization

Journal of Optimization Theory and Applications
Abstract We study the stabilization of degenerate 1-D wave equations in non divergence form with drift. The degeneracy takes place in one boundary point and the stabilization is obtained by a nonlinear damping in the nondegeneracy one.
Fragnelli, Genni, Mugnai, Dimitri
openaire   +2 more sources

Travelling wave solutions of the degenerate Kolmogorov–Petrovski–Piskunov equation

European Journal of Applied Mathematics, 2003
The authors study the asymptotic behaviour of solutions of the initial value problem for a degenerate parabolic equation \[ {\partial u\over\partial t}={\partial^2\over \partial x^2} \varphi(u)+ \psi(u) \] in \(\{(x,t)\mid x\in\mathbb{R},\;0\leq ...
Medvedev, G. S., Ono, K., Holmes, P. J.
openaire   +1 more source

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

Energy decay for degenerate Kirchhoff equations with weakly nonlinear dissipation

Electronic Journal of Differential Equations, 2013
In this article we consider a degenerate Kirchhoff equation wave equation with a weak frictional damping, $$ (|u_t|^{l-2}u_t)_t-\Big( \int_{\Omega }|\nabla _x u|^{2}\,dx\Big)^{\gamma } \Delta _xu+\alpha (t)g(u_t)=0.
Mama Abdelli, Salim A. Messaoudi
doaj  

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

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

Transport theory within a generalized Boltzmann equation for multiband wave packets

Physical Review Research, 2020
A generalized theory for transport under applied electrochemical potential and temperature gradients that includes multiband effects is presented.
T. Stedman, L. M. Woods
doaj   +1 more source

Travelling wave solutions for doubly degenerate reaction-diffusion equations [PDF]

ANZIAM Journal, 2010
AbstractThis paper concerns a nonlinear doubly degenerate reaction–diffusion equation which appears in a bacterial growth model and is also of considerable mathematical interest. A travelling wave analysis for the equation is carried out. In particular, the qualitative behaviour of both sharp and smooth travelling wave solutions is analysed.
openaire   +2 more sources

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source