Results 11 to 20 of about 199,828 (311)

Accounting for the Boundary Problem at Subnational Level: The Supply–Demand Balance of Biomass Cooking Fuels in Kitui County, Kenya [PDF]

open access: yesResources, 2018
In sub-Saharan Africa, the high demand for wood-based cooking fuels calls for urgent policy action to steer the cooking energy sector towards more sustainability.
Roger Bär, Albrecht Ehrensperger
doaj   +2 more sources

Analysis of Dipolar Sources in the Solution of the Electroencephalographic Inverse Problem

open access: yesMathematics, 2022
In this work, we propose a solution to the problem of identification of sources in the brain from measurements of the electrical potential, recorded on the scalp EEG (electroencephalogram), where boundary problems are used to model the skull, brain ...
María Monserrat Morín-Castillo   +3 more
doaj   +1 more source

A Nonlocal Free Boundary Problem [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2015
Given~$s,σ\in(0,1)$ and a bounded domain~$Ω\subset\R^n$, we consider the following minimization problem of $s$-Dirichlet plus $σ$-perimeter type $$ [u]_{ H^s(\R^{2n}\setminus(Ω^c)^2) } + \Per_σ\left(\{u>0\},Ω\right), $$ where~$[ \cdot]_{H^s}$ is the fractional Gagliardo seminorm and $\Per_σ$ is the fractional perimeter. Among other results, we prove
S. Dipierro, O. Savin, E. Valdinoci
openaire   +5 more sources

Trial methods for Bernoulli's free boundary problem [PDF]

open access: yes, 2014
Free boundary problems deal with solving partial differential equations in a domain, a part of whose boundary is unknown – the so-called free boundary. Beside the standard boundary conditions that are needed in order to solve the partial differential ...
Mitrou, Giannoula
core   +1 more source

The numerical analysis of E-polarizied electromagnetic wave reflections from inhomogeneous dielectric layer

open access: yesФизика волновых процессов и радиотехнические системы, 2019
The work is devoted to the electromagnetic analysis of metamaterial based on a dielectric layer having inhomogeneous atoms distribution along the transverse coordinate.
D.N. Panin   +3 more
doaj   +1 more source

A second order convergent trial method for a free boundary problem in three dimensions [PDF]

open access: yes, 2015
The present article is concerned with the solution of a generalized Bernoulli free boundary problem in three spatial dimensions. We parametrize the free boundary under consideration over the sphere and apply a trial method which updates the free boundary
Harbrecht, Helmut, Bugeanu, Monica
core   +1 more source

MECHANICAL CHARACTERISTICS OF THREE-PHASE INDUCTION MOTORS WITH SINGLE-PHASE POWER SUPPLY

open access: yesElectrical engineering & Electromechanics, 2016
Aim. Development of a method for calculating mechanical characteristics of three-phase induction motors with single-phase power supply. Methods. The developed algorithm is based on the high-adequacy mathematical model of motor and projection method for ...
V.S. Malyar, A.V. Malyar
doaj   +1 more source

On the Correctness of Boundary Value Problems for the Two-Dimensional Loaded Parabolic Equation

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
The paper studies the problems of the correctness of setting boundary value problems for a loaded parabolic equation. The feature of the problems is that the order of the derivative in the loaded term is less than or equal to the order of the ...
A.Kh. Attaev   +2 more
doaj   +1 more source

Boundary Value Problems and Boundary Value Spaces [PDF]

open access: yes, 2021
AbstractThis chapter is devoted to the study of inhomogeneous boundary value problems. For this, we shall reformulate the boundary value problem again into a form which fits within the general framework of evolutionary equations. In order to have an idea of the type of boundary values which make sense to study, we start off with a section that deals ...
Christian Seifert   +2 more
openaire   +1 more source

A continuity result for a quasilinear elliptic free boundary problem [PDF]

open access: yes, 1994
summary:We investigate a two dimensional quasilinear free boundary problem, and show that the free boundary is a union of graphs of continuous ...
Álvarez Contreras, Jesús   +2 more
core   +1 more source

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