Results 81 to 90 of about 12,675 (193)

Global existence, uniqueness, and continuous dependence for a reaction-diffusion equation with memory

open access: yesElectronic Journal of Differential Equations, 1996
initial data are established for a quasilinear functional reaction-diffusion equation which arises from a two-dimensional energy balance climate model.
Georg Hetzer
doaj  

A duality for prescribed mean curvature graphs in Riemannian and Lorentzian Killing submersions

open access: yesMathematische Nachrichten, Volume 297, Issue 5, Page 1581-1600, May 2024.
Abstract We develop a conformal duality for space‐like graphs in Riemannian and Lorentzian three‐manifolds that admit a Riemannian submersion over a Riemannian surface whose fibers are the integral curves of a Killing vector field, which is time‐like in the Lorentzian case.
Andrea Del Prete   +2 more
wiley   +1 more source

Asymptotic behavior of solutions of a parabolic equations in a band domain

open access: yes上海师范大学学报. 自然科学版
We consider a quasilinear parabolic equation in a band domain with inhomogeneous and unbounded boundary conditions. We show that, under certain conditions, the solution u of the initialboundary value problem tends to infinite as t→∞.
DU Wenjing   +4 more
doaj   +1 more source

On one-dimensional stochastic control problems: applications to investment models [PDF]

open access: yes
The paper provides a systematic way for finding a partial differential equation that characterize directly the optimal control, in the framework of one?dimensional stochastic control problems of Mayer, with no constraints on the controls.
Juan Pablo Rincón-Zapatero   +1 more
core  

Development of attenuation and diffraction corrections for linear and nonlinear Rayleigh surface waves radiating from a uniform line source

open access: yesAIP Advances, 2016
In recent studies with nonlinear Rayleigh surface waves, harmonic generation measurements have been successfully employed to characterize material damage and microstructural changes, and found to be sensitive to early stages of damage process.
Hyunjo Jeong   +3 more
doaj   +1 more source

Nonlinear multidimensional parabolic-hyperbolic equations

open access: yesElectronic Journal of Differential Equations, 2007
This paper deals with the coupling of a quasilinear parabolic problem with a first order hyperbolic one in a multidimensional bounded domain $Omega$. In a region $Omega_{p}$ a diffusion-advection-reaction type equation is set while in the complementary ...
loria Aguilar   +2 more
doaj  

Comparative Characterization of Nonlinear Ultrasound Fields Generated by Sonalleve V1 and V2 MR-HIFU Systems. [PDF]

open access: yesIEEE Trans Ultrason Ferroelectr Freq Control, 2023
Karzova MM   +6 more
europepmc   +1 more source

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