Results 281 to 290 of about 261,209 (317)

Relaxation of the Electron Distribution Function

IEEE Transactions on Plasma Science, 1984
This paper discusses an analytical technique for calculating the relaxation in time of the electron distribution function f in an environment in which no perturbing forces act on the electrons. For t = 0, f may have any arbitrary form presumed to be caused by perturbing forces which were not zero during t < 0.
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Spin-Relaxation Functions

1997
The spin-relaxation functions are the time dependences of the observables one measures in relaxation experiments. A list of relaxation functions for typical measuring procedures is given in Table 10.1 on page 93.
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New relaxations for composite functions

2019
Mixed-integer nonlinear programs are typically solved using branch-and-bound algorithms. A key determinant of the success of such methods is their ability to construct tight and tractable relaxations. The predominant relaxation strategy used by most state-of-the-art solvers is the factorable programming technique.
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Relaxation function of linear polymers

Journal of engineering physics, 1982
The relaxation function of linear polymers possessing a discrete realxation time spectrum is analyzed.
Z. P. Shul'man, Z. P. Shul'man, G. M. Bartenev, G. M. Bartenev, Boris Khusid, Boris Khusid   +5 more
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Relaxation time distribution function

Ferroelectrics, 2000
Abstract The distribution function of relaxation time in disordered dielectrics has been calculated in the random field theory framework. For this purpose, we first consider the dynamics of single two-orientable electric dipole in a random electric field E in a disordered ferroelectric.
Maya D. Glinchuk, B. Hilczer, Vladimir A. Stephanovich   +2 more
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Dielectric relaxation functions and models

Journal of Applied Physics, 1990
The dielectric relaxation function is defined as the transient current generated by the application of a unit voltage. In analogy with viscoelasticity, a second relaxation function can be defined as the transient voltage generated by the application of a unit current.
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On the direct estimation of creep and relaxation functions

Mechanics of Time-Dependent Materials, 2007
Two alternative approaches for estimating linear viscoelastic material functions from a single experiment under random excitation are derived and analyzed. First, Boltzmann’s superposition integral is discretized into a system of linear equations. Due to the ill-posedness of the resulting matrix equation, Tikhonov’s regularization is introduced. Second,
Joonas Sorvari, Matti Malinen
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A dispersion function of paramagnetic relaxation

Physica, 1958
Synopsis An empirical dispersion function for paramagnetic relaxation is proposed which is intended to describe experimental data for the magnetic susceptibilities of some alums. This function gives an asymmetric frequency spectrum of the complex susceptibilities, thus an improvement over the function of Casimir and Du Pre in analyzing the ...
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Viscoelastic relaxation functions compatible with thermodynamics

Journal of Elasticity, 1988
Within the framework of linear viscoelasticity this paper deals with the elaboration of a procedure for testing whether a given relaxation function is compatible with thermodynamics. In order to avoid any difficulty concerning the indeterminacy of the free energy functional, the second law is stated through the Clausius property for approximately ...
Mauro Fabrizio, MORRO, ANGELO
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The Relaxed Work Functional in Linear Viscoelasticity

Mathematics and Mechanics of Solids, 2004
The relaxed work from a history H' to a history H is defined as the minimum work required to approach H via a sequence of continuations of H'. I prove three basic properties of the relaxed work: subadditivity, lower semicontinuity with respect to H for fixed H', and two dissipation inequalities.
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