Results 11 to 20 of about 3,665,900 (304)

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

Optimal bounds on texture coefficients

open access: yes, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Paroni, Roberto
openaire   +4 more sources

Asymptotic analysis of optimal control problems on the semiaxes for Carathéodory differential inclusions with fast oscillating coefficients [PDF]

open access: yesNonlinear Analysis, 2023
We consider an optimal control problem for a differential inclusion of the Carathéodory type affine with respect to the control with a coercive cost functional on a semiaxis and with fast oscillating time-dependent coefficients.
Sergey Dashkovskiy   +3 more
doaj   +2 more sources

A Level Set Approach to Optimal Homogenized Coefficients [PDF]

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   +3 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

Wavelet coefficient computation with optimal prefiltering [PDF]

open access: yesIEEE Transactions on Signal Processing, 1994
Discrete wavelet transform (DWT) is often used to approximate wavelet series transform (WST) and continuous wavelet transform (CWT), since it can be computed numerically. In this research, we first study the accuracy of the computed DWT coefficients obtained from the Shensa (see ibid., vol.40, no.10, p.2464-2482, 1992) algorithm as an approximate of ...
Xiang-Gen Xia 0001   +2 more
openaire   +2 more sources

Optimal regulator for a class of nonlinear stochastic systems with random coefficients [PDF]

open access: yes, 2023
We consider an optimal regulator problem for a class of nonlinear stochastic systems with a square-root nonlinearity and random coefficients, and using the quadratic-linear criterion.
Gashi, Bujar   +3 more
core   +1 more source

A BETA‐OPTIMAL TEST OF THE EQUICORRELATION COEFFICIENT [PDF]

open access: yesAustralian Journal of Statistics, 1990
SummaryThis paper considers the problem of testing for nonzero values of the equicorrelation coefficient of a standard symmetric multivariate normal distribution. Recently, SenGupta (1987) proposed a locally best test. We construct a beta‐optimal test and present selected one and five percent critical values. An empirical power comparison of SenGupta's
Bhatti, Muhammad I., King, Maxwell L.
openaire   +2 more sources

On optimality conditions for optimal control problem in coefficients for Δ p -Laplacian [PDF]

open access: yesBoundary Value Problems, 2014
The considered optimal control problem involves the minimization of a functional describing the discrepancy between the solution \(y\) of a nonlinear Dirichlet boundary value problem for the equation in the \(p\)-Laplacian \(\Delta_p(u,y)=f\) and \(y_d\), which is a given distribution. In this equation, \(u\) means the control and belongs to a class of
Rosanna Manzo   +2 more
openaire   +3 more sources

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