Results 11 to 20 of about 753,055 (286)

Asymptotic method for approximation of resonant interaction of nonlinear multidimensional hyperbolic waves

Mathematical Modelling and Analysis, 2008
A method of averaging along characteristics of weakly nonlinear hyperbolic systems, which was presented in earlier works of the author for one dimensional waves, is generalized for some cases of multidimensional wave problems.
Aleksandras Krylovas
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Parallel Perturbed Gauss-Newton State Estimator Based on Fortescue Transformation for Unbalanced Power Systems

Journal of Modern Power Systems and Clean Energy, 2022
This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue transformation.
Izudin Dzafic
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Numerical Methods for Singular Perturbation Problems [PDF]

, 1981
Consider the two-point boundary value problem for a stiff system of ordinary differential equations.
Kreiss, Barbro, Kreiss, Heinz-Otto
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Asymptotic solution of the mathematical model of nonlinear oscillations of absolutely elastic inextensible weightless string

Nonlinear Analysis, 2010
The mathematical model of nonlinear oscillations of weightless string is analyzed. To find an asymptotic solution of the problem, uniformly valid in a long interval of time, an averaged system of integral differential equations has been constructed.
A. Krylovas, O. Lavcel-Budko, P. Miškinis   +2 more
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Perturbative subtraction methods [PDF]

Nuclear Physics B - Proceedings Supplements, 2000
Talk presented at LATTICE99(algorithms)
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Kruskal's Perturbation Method [PDF]

Journal of Mathematical Physics, 1970
A general method for eliminating the angle variable from the equations of a perturbed periodic motion and for deriving an ``adiabatic invariant'' J has been given by Kruskal and, for a special class of Hamiltonian systems, McNamara and Whiteman have shown (to order ε2) that J is related to a set of invariants I obtained from the expansion of Poisson ...
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Perturbation theory in a framework of iteration methods [PDF]

, 2005
In a previous paper (J. Phys. A 36, 11807 (2003)), we introduced the `asymptotic iteration method' for solving second-order homogeneous linear differential equations.
Amore, Amore, Barakat, Barrowes, Bender, Bender, Bender, Bender, Bender, Chebotarev, Chen, Ciftci, Ciftci, Cohen, Delabaere, Delabaere, des Cloiseaux, Dunster, Falloon, Fernandez, Fernandez, Fernandez, Guido, Guimaraes, Hakan Ciftci, Hatsuda, Ivanov, Ivanov, Jamastil, Janke, Li, Mezincescu, Mostafazadeh, Mustafa, Mustafa, Nasser Saad, Radmore, Richard L. Hall, Sink, Slepian, Streifer, Thompson, Znojil, Znojil, Znojil   +44 more
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Continuum methods in lattice perturbation theory [PDF]

, 2002
We show how methods of continuum perturbation theory can be used to simplify perturbative lattice calculations. We use the technique of asymptotic expansions to expand lattice loop integrals around the continuum limit. After the expansion, all nontrivial
Becher, Burgio, Caracciolo, Chetyrkin, Kirill Melnikov, Laporta, Lüscher, Rothe, Smirnov, Thomas Becher, Tkachov   +10 more
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A Phase Transistion in the Water Coupled to a Local External Perturbation [PDF]

, 1999
A flux of ideal fluid coupled to perturbation is investigated by nonperturbative methods of the quantum field theory. Asymptotic behavior of the flux coupled to perturbation turns out to be similiar to that of superfluids.Comment: 17 pages, 5 figures ...
Brezin, D. Volchenkov, de Witt, Krasitskii, Nalimov, Nalimov, Nalimov, Nalimov, Patashinsky, Pokrovsky, R. Lima, Volchenkov, Wilson, Yakhot   +13 more
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Random Force Perturbations: A New Extension of the Cell Perturbation Method for Turbulence Generation in Multiscale Atmospheric Boundary Layer Simulations

Journal of Advances in Modeling Earth Systems, 2019
Coupling between mesoscale and large eddy simulation (LES) is critically important for many atmospheric model applications, from predictions of wind energy to fire propagation.
L. J. Mazzaro, E. Koo, D. Muñoz‐Esparza, J. K. Lundquist, R. R. Linn   +4 more
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