Results 301 to 310 of about 724,647 (339)

Dollar Averaging in Theory and Practice

Financial Analysts Journal, 1960
(1960). Dollar Averaging in Theory and Practice. Financial Analysts Journal: Vol. 16, No. 5, pp. 51-53.
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Average Hamiltonian Theory

2007
The sections in this article are 1 Introduction 2 Magnus Expansion 3 Representations and Frames of Reference: Truncation 4 Applications 5 Additional Topics 6 Biographical ...
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Functional averages in the theory of superconductivity

Zeitschrift f�r Physik, 1967
The grand canonical partition function of a superconductor described byGorkov's model Hamiltonian is represented as a functional integral with Gaussian measure. The integrand can be regarded as the partition function of a free Fermi system which interacts with a fluctuating external source potential. Perturbation-theoretic techniques are applied to the
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On the theory of moving average graduation

Scandinavian Actuarial Journal, 1979
Abstract In this paper a new criterion for judging the properties of moving averages is given, and moving averages which are optimal according to this criterion under general assumptions are derived. For the standard case where the observations are uncorrelated and have equal variance, our optimal moving averages generalize two well-known optimal ...
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AVERAGING OF FUNCTIONALS OF THE CALCULUS OF VARIATIONS AND ELASTICITY THEORY

Mathematics of the USSR-Izvestiya, 1987
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Bethe Approximation in the Theory of "Average Spin"

Advanced Materials Research, 2014
The modeling study of magnetic phase transition with account of short-range order has been carried out in the approximation of random interaction between atomic magnetic moments of the nearest neighbours and in the frame of Ising model. Curie temperature has been calculated for different kinds of crystalline lattice.
Leonid L. Afremov, Aleksandr Petrov
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Numerical solution of cell problems in averaging theory

USSR Computational Mathematics and Mathematical Physics, 1988
Cell problems of averaging theory occur in course of asymptotic investigation of partial differential equations with rapidly oscillation coefficients. The author applies a difference method for the solution of cell problems for a set of partial differential equations, the coefficients of which are periodic functions with rapid oscillations. That set of
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Resonances in Multifrequency Averaging Theory

1994
The Whitham method allows to obtain rapidly oscillating asymptotic solutions of nonlinear equations with a small parameter e which characterizes the dispersion. The principal term of such asymptotic solutions can be represented in the form $$ u = f\left( {\frac{{S\left( {x,t} \right)}}{\varepsilon },x,t} \right)$$ (1.1) , where f (τ, x, t ...
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Fermion-field theory and configuration averaging

Journal of Physics C: Solid State Physics, 1975
The configuration-averaging theory of Mookerjee (see abst. A38777, a43969 of 1973) using a disorder field is put here in an equivalent picture of an electron interacting with a fermion field. This provides a more physical background to the mathematically abstruse formalism and also provides a justification to the CPA and cluster cpas proposed by Bishop
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Application of the Averaging Method in Bifurcation Theory

1998
The averaging method is very famous in non-linear vibration. This chapter describes it from the viewpoint of geometry and Poincare mapping. We will introduce it according to the theory of KBM (Krylov, Bogoliubov, Mytropolisky). This method is very effective for the weak non-linear system and the linear disturbed system [1].
Yushu Chen, Andrew Y. T. Leung
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