Results 21 to 30 of about 1,136,044 (78)

A modified R1 X R1 method for helioseismic rotation inversions

, 1995
We present an efficient method for two dimensional inversions for the solar rotation rate using the Subtractive Optimally Localized Averages (SOLA) method and a modification of the R1 X R1 technique proposed by Sekii (1993).
Pijpers, F. P., Thompson, M. J.
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Comparing instance-averaging with instance-saving learning algorithms [PDF]

, 1988
The goal of our research is to understand the power and appropriateness of instance-based representations and their associated acquisition methods. This paper concerns two methods for reducing storage requirements for instance-based learning algorithms ...
Aha, David W., Kibler, Dennis
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Diagrammatic method of integration over the unitary group, with applications to quantum transport in mesoscopic systems [PDF]

, 1996
A diagrammatic method is presented for averaging over the circular ensemble of random-matrix theory. The method is applied to phase-coherent conduction through a chaotic cavity (a ``quantum dot'') and through the interface between a normal metal and a ...
Al’tshuler B. L., Al’tshuler B. L., Andreev A. F., Andreev A. F., C. W. J. Beenakker, Dorokhov O. N., Dorokhov O. N., Gor’kov L. P., Gor’kov L. P., P. W. Brouwer   +9 more
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Nonlinearities in Cross-Country Growth Regressions: A Bayesian Averaging of Thresholds (BAT) Approach [PDF]

, 2007
We propose a Bayesian Averaging of Thresholds (BAT) approach for assessing the existence and quantifying the effect of threshold effects in cross-country growth regressions in the presence of model uncertainty.
Cuaresma, Jesus Crespo, Doppelhofer, Gernot   +1 more
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Dipole-dipole interaction between orthogonal dipole moments in time-dependent geometries

, 2007
In two nearby atoms, the dipole-dipole interaction can couple transitions with orthogonal dipole moments. This orthogonal coupling accounts for a number of interesting effects, but strongly depends on the geometry of the setup.
D. P. Craig, G. S. Agarwal, Jörg Evers, Sandra Isabelle Schmid, Z. Ficek   +4 more
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On the averaging principle for one-frequency systems. An application to satellite motions

, 2009
This paper is related to our previous works [1][2] on the error estimate of the averaging technique, for systems with one fast angular variable. In the cited references, a general method (of mixed analytical and numerical type) has been introduced to ...
C. Morosi, C. Morosi, Carlo Morosi, J.A. Sanders, Livio Pizzocchero, P. Lochak, P.R. Wallace, V.I. Arnold, W.T. Kyner   +8 more
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Regularized Dual Averaging Image Reconstruction for Full-Wave Ultrasound Computed Tomography

, 2017
Ultrasound computed tomography (USCT) holds great promise for breast cancer screening. Waveform inversion-based image reconstruction methods account for higher order diffraction effects and can produce high-resolution USCT images, but are computationally
Anastasio, Mark A., Duric, Neb, Li, Cuiping, Matthews, Thomas P., Wang, Kun   +4 more
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Numerical Artifacts in the Discontinuous Generalized Porous Medium Equation: How to Avoid Spurious Temporal Oscillations

, 2018
Numerical discretizations of the Generalized Porous Medium Equation (GPME) with discontinuous coefficients are analyzed with respect to the formation of numerical artifacts.
Gerritsen, Margot, Maddix, Danielle, Sampaio, Luiz   +2 more
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Weakly-nonlocal Symplectic Structures, Whitham method, and weakly-nonlocal Symplectic Structures of Hydrodynamic Type

, 2004
We consider the special type of the field-theoretical Symplectic structures called weakly nonlocal. The structures of this type are in particular very common for the integrable systems like KdV or NLS.
A Ya Maltsev, Alekseev V L, Alekseev V L Pavlov M V, Balinski A A, Balinskii A A, Bogdanov L V, Dobrokhotov S Yu, Dubrovin B A, Dubrovin B A, Dubrovin B A, Dubrovin B A, Dubrovin B A, Enriquez B, Faddeev L D, Ferapontov E V, Ferapontov E V, Ferapontov E V, Ferapontov E V, Flaschka H, Gelfand I M, Gelfand I M, Grinberg N I, Krichever I M, Krichever I M, Krichever I M, Krichever I M, Luke J C, Maltsev A Ya, Maltsev A Ya, Maltsev A Ya, Mokhov O I, Mokhov O I, Mokhov O I, Mokhov O I, Novikov S P, Novikov S P, Novikov S P, Novikov S P, Pavlov M V, Pavlov M V, Sergyeyev A, Sokolov V V, Tsarev S P, Whitham G, Zakharov V E, Zel'manov E I   +45 more
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An Algorithmic Approach to Limit Cycles of Nonlinear Differential Systems: the Averaging Method Revisited

, 2019
This paper introduces an algorithmic approach to the analysis of bifurcation of limit cycles from the centers of nonlinear continuous differential systems via the averaging method. We develop three algorithms to implement the averaging method.
Bautin Nikolai N., Chen Lan S., Chicone Carmen, Loud Warren S., Poincaré Henri, Pontrjagin Lev S.   +5 more
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