Results 11 to 20 of about 8,116,877 (276)

Determination of optimal nudging coefficients [PDF]

open access: yesTellus A: Dynamic Meteorology and Oceanography, 2003
A four-dimensional variational assimilation (4D-Var) scheme is now widely used by meteorologicalcentres in a operational way. However, most of these applications do not take account of model error.Indeed, the classical 4D-Var with imperfect model formulation is unaffordable for current computationalmeans.
Vidard, Arthur   +2 more
openaire   +3 more sources

Time–Optimal Control of Linear Fractional Systems with Variable Coefficients

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
Linear systems described by fractional differential equations (FDEs) with variable coefficients involving Riemann–Liouville and Caputo derivatives are examined in the paper.
Matychyn Ivan, Onyshchenko Viktoriia
doaj   +1 more source

OPTIMAL MODEL AVERAGING OF VARYING COEFFICIENT MODELS [PDF]

open access: yesStatistica Sinica, 2019
We consider the problem of model averaging over a set of semiparametric varying coefficient models where the varying coefficients can be functions of continuous and categorical variables. We propose a Mallows model averaging procedure that is capable of delivering model averaging estimators with solid finite-sample performance.
Li, Cong   +3 more
openaire   +1 more source

Optimal estimates of self-diffusion coefficients from molecular dynamics simulations.

open access: yesJournal of Chemical Physics, 2020
Translational diffusion coefficients are routinely estimated from molecular dynamics simulations. Linear fits to mean squared displacement (MSD) curves have become the de facto standard, from simple liquids to complex biomacromolecules. Nonlinearities in
J. T. Bullerjahn   +2 more
semanticscholar   +1 more source

Optimal Diffusion Coefficient Estimation in Single-Particle Tracking [PDF]

open access: yesBiophysical Journal, 2012
Single-particle tracking is increasingly used to extract quantitative parameters on single molecules and their environment, while advances in spatial and temporal resolution of tracking techniques inspire new questions and avenues of investigation.
Berglund, Andrew J., Michalet, Xavier
openaire   +3 more sources

Algebraic Model for Quantum Scattering. Reformulation, Analysis and Numerical Strategies [PDF]

open access: yes, 1997
The convergence problem for scattering states is studied in detail within the framework of the Algebraic Model, a representation of the Schrodinger equation in an L^2 basis.
Arickx, F., Vasilevsky, V. S.
core   +2 more sources

Optimal cubature formulas for approximate integrals of functions defined on a sphere in three-dimensional space [PDF]

open access: yesE3S Web of Conferences
The development of effective methods of approximate calculation of integrals using optimal cubature formulas and optimal quadrature formulas with trigonometric weights for defined functions on a sphere, the creation of new algorithms for approximate ...
Bozarov Bakhromjon   +5 more
doaj   +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

MISO Capacity with Per-Antenna Power Constraint [PDF]

open access: yes, 2011
We establish in closed-form the capacity and the optimal signaling scheme for a MISO channel with per-antenna power constraint. Two cases of channel state information are considered: constant channel known at both the transmitter and receiver, and ...
Vu, Mai
core   +2 more sources

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