Results 101 to 110 of about 1,897,982 (293)

Ince-Gaussian laser beams as superposition of Hermite-Gaussian or Laguerre-Gaussian beams

open access: yesКомпьютерная оптика
We obtain explicit analytic expressions for the Ince-Gaussian (IG) beams for several first indices p = 3, 4, 5, 6. Earlier, explicit expressions have been derived for amplitudes of the IG beams with p = 0, 1, 2 and without regard for the ellipticity ...
E.G. Abramochkin   +2 more
doaj   +1 more source

Rayleigh-Schroedinger-Goldstone variational perturbation theory for many fermion systems

open access: yes, 2004
We present a Rayleigh-Schroedinger-Goldstone perturbation formalism for many fermion systems. Based on this formalism, variational perturbation scheme which goes beyond the Gaussian approximation is developed.
Chul Koo Kim   +23 more
core   +2 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

Biaxial Gaussian Beams, Hermite–Gaussian Beams, and Laguerre–Gaussian Vortex Beams in Isotropy-Broken Materials

open access: yesPhotonics
We have developed the paraxial approximation for electromagnetic fields in arbitrary isotropy-broken media in terms of the ray–wave tilt and the curvature of materials’ Fresnel wave surfaces.
Maxim Durach
doaj   +1 more source

Smooth Random Surfaces from Tight Immersions?

open access: yes, 1993
We investigate actions for dynamically triangulated random surfaces that consist of a gaussian or area term plus the {\it modulus} of the gaussian curvature and compare their behavior with both gaussian plus extrinsic curvature and ``Steiner'' actions ...
A. Billoire   +32 more
core   +1 more source

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov   +4 more
wiley   +1 more source

Classifying Exoplanets with a Gaussian Mixture Model

open access: yesThe Open Journal of Astrophysics, 2018
Recently, Odrzywolek and Rafelski have found three distinct categories of exoplanets, when they are classified based on density. We first carry out a similar classification of exoplanets according to their density using the Gaussian Mixture Model ...
Soham Kulkarni, Shantanu Desai
doaj   +1 more source

On the Gaussian q-Distribution

open access: yes, 2009
We present a study of the Gaussian q-measure introduced by Diaz and Teruel from a probabilistic and from a combinatorial viewpoint. A main motivation for the introduction of the Gaussian q-measure is that its moments are exactly the q-analogues of the ...
Diaz, Rafael, Pariguan, Eddy
core   +1 more source

Gaussian Fibonacci and Gaussian Lucas p-numbers

open access: yes, 2017
In this paper we define and study the Gaussian Fibonacci and Gaussian Lucas p-numbers. We give generating functions, Binet formulas, explicit formulas, matrix representations and sums of Gaussian Fibonacci p-numbers by matrix methods . For p = 1 these Gaussian Fibonacci and Gaussian Lucas p-numbers reduce to the Gaussian Fibonacci and the Gaussian ...
Aşçı, Mustafa, Gürel, Eşref
openaire   +6 more sources

A Gaussian-generalized inverse Gaussian finite-dimensional filter

open access: yesStochastic Processes and their Applications, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
FERRANTE M., VIDONI, Paolo
openaire   +3 more sources

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