Results 101 to 110 of about 183,010 (330)

NUMERICAL RECOVERY OF THE INITIAL CONDITION IN THE CAUCHY PROBLEMS FOR LINEAR PARABOLIC AND HYPERBOLIC EQUATIONS

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. The theory of solving inverse problems of mathematical physics is one of the most actively developing branches of modern mathematics. The interest of researchers in such problems is primarily due to the large number of their applications ...
I. V. Boykov, V. A. Ryazantsev
doaj   +1 more source

Status of the current parabolic dish technology [PDF]

open access: yes, 1981
Vu-graphs are presented that show that point focus distributed receiver distributed generation systems are cost competitive with current utilities. System cost caveats and typical power module costs are described.
Sumrall, C.
core   +1 more source

Unravelling the Spatiotemporal Exciton Dynamics in Electrically Pumped Organic Laser Diodes

open access: yesLaser &Photonics Reviews, EarlyView.
High‐speed OLED measurements combined with advanced simulations reveal how singlet, triplet, and polaron dynamics drive key loss channels that hinder organic semiconductor lasing, while presenting strategies to overcome them. Abstract Organic materials offer wide‐band emission covering regions of the spectrum unachievable by conventional semiconductors.
Adam Bickerdike   +2 more
wiley   +1 more source

First and second sharp constants in Riemannian Gagliardo–Nirenberg inequalities

open access: yesMathematische Nachrichten, EarlyView.
Abstract Let (M,g)$(M,g)$ be a smooth compact Riemannian manifold of dimension n≥2$n\ge 2$, 1
Jurandir Ceccon   +2 more
wiley   +1 more source

Parabolic transmission problems across irregular layers

open access: yesLe Matematiche, 2007
We study second order transmission problems across either a fractal surface or across the corresponding pre-fractal surface. Existence uniqueness and regularity results for the strict solution in both cases are proved.The asymptotic behaviour of the ...
Maria Rosaria Lancia
doaj  

Time integration and the Trefftz Method Part I - First-order and parabolic problems

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The finite element method is applied in the time domain to establish formulations for the integration of first-order and parabolic (transient) problems. The modal decomposition concept is applied using two distinct approaches.
João A. Teixeira de Freitas
doaj  

Dual Variational Problems and Action Principles for Chen–Lee and Hopf–Langford Systems

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We describe the construction of dual variational principles and action functionals for nonlinear dynamical systems using a methodology based on the dual Lagrange multiplier formalism and a convex optimization approach, to derive families of dual actions that correspond to the given nonlinear ordinary differential system.
A. Ghose‐Choudhury, Partha Guha
wiley   +1 more source

Boundary value problems for essentially-loaded parabolic equation

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
In this paper we investigate the first boundary value problem for essentially loaded equation of heat conduction, i.e. when laden terms are derivatives for any finite order.
M.I. Ramazanov   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy