Results 11 to 20 of about 356,969 (310)

H-Optimal Control in Coefficients for Dirichlet Parabolic Problems

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2010
In the paper the Dirichlet optimal control problem associated with a linear parabolic equation the coefficients of which we take as controls in L1(Ω) has been studied. Since equations of this type can exhibit the Lavrentieff phenomenon and non-uniqueness
I. G. Balanenko, P. I. Kogut
doaj   +2 more sources

On Optimal Control Problem in Coefficients for Nonlinear Elliptic Variational Inequalities

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2011
In this paper we study an optimal control problem for a nonlinear elliptic variational inequality with generalized solenoidal coefficients which we adopt as controls in L°°(fi). We prove the existence of optimal solution of the stated problem.
O. P. Kogut
doaj   +2 more sources

A Level Set Approach to Optimal Homogenized Coefficients

open access: yesComputer Modeling in Engineering & Sciences, 2003
The reconstructing optimal microstructures of given homogenized coefficients of steady diffusion equation is studied. In the reconstruction, the governing equation of level set function is approximated by adding viscosity term and the numerical procedure for the evolution of the level set function for the solution is examined. The numerical experiments
Sheen, Dongwoo   +2 more
openaire   +4 more sources

Optimal Convergence of Slow–Fast Stochastic Reaction–Diffusion–Advection Equation with Hölder-Continuous Coefficients

open access: yesMathematics
This paper investigates a slow–fast stochastic reaction–diffusion–advection equation with Hölder-continuous coefficients, where the irregularity of the coefficients presents significant analytical challenges.
Li Yang, Lin Liu
doaj   +2 more sources

On Realized Gain-Optimal Feeding Coefficients of Antenna Arrays

open access: yes, 2023
Funding Information: ACKNOWLEDGMENT This work was supported by the Business Finland through ENTRY100GHz CELTIC-NEXT project. Publisher Copyright: © 2023 European Association for Antennas and Propagation.The feeding coefficients maximizing the realized ...
Salmi, Albert   +2 more
core   +1 more source

Comparison of estimated optimal parameter values and correlation coefficients.

open access: yes, 2023
Comparison of estimated optimal parameter values and correlation coefficients.
Ralf-Peter Tornow (5487029)   +7 more
core   +1 more source

Optimal quadrature formulas in Sobolev space for solving the generalized Abel integral equation [PDF]

open access: yesE3S Web of Conferences
In this article, a composite optimal quadrature formula is constructed for an approximate analytical solution of the generalized integral Abel equation in the Sobolev functional space.
Daliyev Bakhtiyor   +5 more
doaj   +1 more source

Optimal Distributed Globally Bounded Control for Parabolic–Hyperbolic Equations with Nonlocal Boundary Conditions and a Linear Quality Criterion

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
For the problem of optimal control of a parabolic-hyperbolic process with nonlocal point boundary conditions, an explicit form of the solution is obtained in the form of formal series according to the system of eigenfunctions, which are generated by the ...
Volodymyr O. Kapustyan   +3 more
doaj   +1 more source

Enhancing Average Secrecy Rates in Downlink NOMA with Dependent Channel Coefficients and Optimal Power Coefficients [PDF]

open access: yesComputer and Knowledge Engineering
Wireless communication systems demand efficient solutions, and non-orthogonal multiple access (NOMA) has emerged as a promising approach. The present investigation compares NOMA against orthogonal multiple access (OMA) methods, specifically focusing on ...
Faramarz Ajami Khales   +1 more
doaj   +1 more source

Design of cooperative matched filter for detection of chemical agents

open access: yesElectronics Letters, 2021
A matched filter (MF) is one of the most widely used detectors for the detection of chemical agent (CA) clouds in the passive hyperspectral imaging system.
Hyeong‐Geun Yu Dr.   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy