Results 91 to 100 of about 63,372 (284)

On stability of discretizations of the Helmholtz equation (extended version)

, 2011
We review the stability properties of several discretizations of the Helmholtz equation at large wavenumbers. For a model problem in a polygon, a complete $k$-explicit stability (including $k$-explicit stability of the continuous problem) and convergence
A Bayliss, A. Buffa, AH Barnett, AK Aziz, B Pluymers, C Farhat, CS Morawetz, E Perrey-Debain, EA Spence, F. Ihlenburg, I Babuška, I Babuška, I Harari, I Harari, I. Babuška, JM Melenk, JM Melenk, JM Melenk, L Banjai, M Ainsworth, M Ainsworth, M Ainsworth, M Stojek, O Cessenat, O Cessenat, O Laghrouche, P Cummings, P Monk, P Monk, P Ortiz, R Hiptmair, R Leis, R Tezaur, RJ Astley, SA Sauter, SI Pohožaev, SN Chandler-Wilde, T Betcke, T Huttunen, T Huttunen, T Strouboulis, U Hetmaniuk, X Feng, X Feng, ZC Li   +44 more
core   +1 more source

Generalized Tikhonov Method and Convergence Estimate for the Cauchy Problem of Modified Helmholtz Equation with Nonhomogeneous Dirichlet and Neumann Datum

Mathematics, 2019
We investigate a Cauchy problem of the modified Helmholtz equation with nonhomogeneous Dirichlet and Neumann datum, this problem is ill-posed and some regularization techniques are required to stabilize numerical computation. We established the result of
Hongwu Zhang, Xiaoju Zhang
doaj   +1 more source

Modified regularization method for the Cauchy problem of the Helmholtz equation

Applied Mathematical Modelling, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qin, H. H., Wei, T.
openaire   +2 more sources

Tailored Redox‐Active Catholytes Enabling High‐Rate and High‐Loading All‐Solid‐State Lithium‐Sulfur Batteries

Advanced Materials, EarlyView.
This study explores iodine substitution in solid electrolytes to overcome sluggish redox kinetics and poor charge transport in all‐solid‐state Li‐S batteries. The resulting iodine‐rich, amorphous phase and superionic, nanocrystalline domains enable effective redox mediation and provide a robust ionic percolation network.
Jingui Yang, Ruizhuo Zhang, Ramon Zimmermanns, Mareen Schaller, Sylvio Indris, Jaehoon Choi, Simon Fleischmann, Torsten Brezesinski, Florian Strauss   +8 more
wiley   +1 more source

A possible cosmological application of some thermodynamic properties of the black body radiation in $n-$dimensional Euclidean spaces

, 2015
In this work we present the generalization of some thermodynamic properties of the black body radiation (BBR) towards an $n-$dimensional Euclidean space.
Angulo-Brown, F., Cordero, Rubén, Gonzalez-Ayala, Julian, Perez-Oregon, J.   +3 more
core   +2 more sources

Dynamics of fractional optical solitary waves to the cubic–quintic coupled nonlinear Helmholtz equation

Partial Differential Equations in Applied Mathematics
This work investigates the dynamics of optical waves to the generalized coupled nonlinear fractional Helmholtz equation with quintic and cubic nonlinear effects.
Naila Nasreen, Jan Muhammad, Adil Jhangeer, Usman Younas   +3 more
doaj   +1 more source

Electric Double Layer and Orientational Ordering of Water Dipoles in Narrow Channels within a Modified Langevin Poisson-Boltzmann Model

Entropy, 2020
The electric double layer (EDL) is an important phenomenon that arises in systems where a charged surface comes into contact with an electrolyte solution. In this work we describe the generalization of classic Poisson-Boltzmann (PB) theory for point-like
Mitja Drab, Ekaterina Gongadze, Veronika Kralj-Iglič, Aleš Iglič   +3 more
doaj   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

A high-order Nystrom discretization scheme for boundary integral equations defined on rotationally symmetric surfaces

, 2011
A scheme for rapidly and accurately computing solutions to boundary integral equations (BIEs) on rotationally symmetric surfaces in R^3 is presented. The scheme uses the Fourier transform to reduce the original BIE defined on a surface to a sequence of ...
Abramowitz, Alpert, Atkinson, Bakr, Bremer, Briggs, Bruno, Cohl, Fleming, Gil, Guenther, Kapur, Kolm, Kress, Kuijpers, Martinsson, P. Young, P.G. Martinsson, Provatidis, Rizzo, S. Hao, Soenarko, Tsinopoulos, Wang   +23 more
core   +1 more source

Numerical simulation of electro-conjugate fluid flow considering electric double layer

Mechanical Engineering Journal, 2015
An electro-conjugate fluid (ECF) is a dielectric liquid generating powerful flow when high DC voltage is applied with electrodes inserted. The ECF flow is generally known as a kind of electrohydrodynamics phenomenon.
Yoshiki IIJIMA, Kyohei HOSODA, Kenjiro TAKEMURA, Koji FUKAGATA, Kazuya EDAMURA   +4 more
doaj   +1 more source