Results 331 to 340 of about 10,537,968 (352)

Theory of Time-Averaged-Product Arrays

The Journal of the Acoustical Society of America, 1957
The mathematical analysis of the directional characteristics of linear additive arrays is given in a polynomial representation. The result of multiplying and taking a time average of the outputs of several detectors also has directional characteristics that may be expressed as polynomials.
C. S. Clay, A. Berman
openaire   +2 more sources

Optimal Reorientation of a Multibody Spacecraft Through Joint Motion Using Averaging Theory

, 2000
The problem of reorienting amultibodyspacecraft using appendagejointmotion is addressed. Averaging theory shows thatsmallperiodicactuationofsuchappendagesresults ina secularchange in the orientationof themultibody spacecraft.
W. Cerven, V. Coverstone
semanticscholar   +1 more source

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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Perturbation theory and averages in inhomogeneous cosmologies.

2021
This thesis will discuss the standard model of cosmology, ΛCDM, along with standard perturbation theory. We will thereafter, explore alternatives to ΛCDM. In Chapter 2 we shall discuss a brief history of the development of GR and introduce the standard model of cosmology.
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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
openaire   +2 more sources

A Priori Parameter Estimation for the Thermodynamically Constrained Averaging Theory: Species Transport in a Saturated Porous Medium

Transport in Porous Media, 2018
Cass T. Miller, F. Valdés-Parada, Sassan Ostvar, B. Wood   +3 more
semanticscholar   +1 more source

Averaging Theory of Arbitrary Order for Piecewise Smooth Differential Systems and Its Application

, 2018
Lijun Wei, Xiang Zhang
semanticscholar   +1 more source

A Pedagogical Approach to the Thermodynamically Constrained Averaging Theory

Transport in Porous Media, 2017
Cass T. Miller, F. Valdés-Parada, B. Wood   +2 more
semanticscholar   +1 more source

Upscaling for Adiabatic Solid–Fluid Reactions in Porous Medium Using a Volume Averaging Theory

Transport in Porous Media, 2015
Chen Yang, M. Quintard, G. Debenest
semanticscholar   +1 more source

The History of the Theory of Averaging

2007
James Murdock, Ferdinand Verhulst, Jan A. Sanders   +2 more
openaire   +2 more sources