Results 271 to 280 of about 83,194 (307)

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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Prediction Theory for Autoregressive-Moving Average Processes

Econometric Reviews, 1988
This paper reviews statistical prediction theory for autoregressive-moving average processes wing techniques developed in control theory. It demonstrates explicitly the connectioluns between the statistical and control theory literatures. Both the forecasting problem and the Single extraction problem am considered, udng linear least squares methods ...
Kenneth F. Wallis, Peter Burridge
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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 an analog of the Helmholtz resonator in the averaging theory

Comptes Rendus de l'Académie des Sciences - Series I - Mathematics, 1999
Summary: The boundary value problem for the Helmholtz equation in \(\mathbb{R}^2\) with Dirichlet boundary condition on a set of arcs is considered. This set is obtained from the circle by cutting out openings with small size, which are arranged periodic and near from each other.
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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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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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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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On the reduction theory for average case complexity

1991
This is an attempt to simplify and justify the notions of deterministic and randomized reductions, an attempt to derive these notions from (more or less) first principles.
Yuri Gurevich, Andreas Blass
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