Results 11 to 20 of about 1,129,256 (278)

The Expected Utility Insurance Premium Principle with Fourth-Order Statistics: Does It Make a Difference?

open access: yesAlgorithms, 2020
The expected utility principle is often used to compute the insurance premium through a second-order approximation of the expected value of the utility of losses.
Alessandro Mazzoccoli, Maurizio Naldi
doaj   +1 more source

Stark Broadening from Impact Theory to Simulations

open access: yesAtoms, 2017
Impact approximation is widely used for calculating Stark broadening in a plasma. We review its main features and different types of models that make use of it.
Roland Stamm   +8 more
doaj   +1 more source

Analysis of corrections to the eikonal approximation [PDF]

open access: yes, 2017
Various corrections to the eikonal approximations are studied for two- and three-body nuclear collisions with the goal to extend the range of validity of this approximation to beam energies of 10 MeV/nucleon.
Guodong Zhan (4260052)   +9 more
core   +3 more sources

The Second Workshop on Lineshape Code Comparison: Isolated Lines

open access: yesAtoms, 2014
In this work, we briefly summarize the theoretical aspects of isolated line broadening. We present and discuss test run comparisons from different participating lineshape codes for the 2s-2p transition for LiI, B III and NV.
Spiros Alexiou   +6 more
doaj   +1 more source

Positron Impact Excitation of the nS States of Atomic Hydrogen

open access: yesAtoms, 2020
The excitation cross sections of the nS states, n = 2 to 6, of atomic hydrogen at various incident positron energies (10.23 to 300 eV) were calculated using the variational polarized-orbital method.
Anand K. Bhatia
doaj   +1 more source

Impact of Approximate Implementation manner in Klobuchar Model

open access: yesAnnals of Geophysics, 2021
This paper focuses on the approximations that John A. Klobuchar made in mid 70s in his famous algorithm of ionospheric correction model for single frequency GPS receiver. At that time Klobuchar used a system of fixed geomagnetic north pole coordinates which are not accurate nowadays according to the International Geomagnetic Reference Field and to the ...
Aljuneidi, Aghyas, Hasan, Hala Tawfek
openaire   +2 more sources

ZEST: A Fast Code for Simulating Zeeman-Stark Line-Shape Functions

open access: yesAtoms, 2018
We present the ZEST code, dedicated to the calculation of line shapes broadened by Zeeman and Stark effects. As concerns the Stark effect, the model is based on the Standard Lineshape Theory in which ions are treated in the quasi-static approximation ...
Franck Gilleron, Jean-Christophe Pain
doaj   +1 more source

On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach

open access: yesAtoms, 2014
The significance of Stark broadening data for problems in astrophysics, physics, as well as for technological plasmas is discussed and applications of Stark broadening parameters calculated using a semiclassical perturbation method are analyzed.
Milan S. Dimitrijević   +1 more
doaj   +1 more source

Bearing Anomaly Recognition Using an Intelligent Digital Twin Integrated with Machine Learning

open access: yesApplied Sciences, 2021
In this study, the application of an intelligent digital twin integrated with machine learning for bearing anomaly detection and crack size identification will be observed.
Farzin Piltan, Jong-Myon Kim
doaj   +1 more source

Beyond the Adiabatic Approximation: the impact of thresholds on the hadronic spectrum [PDF]

open access: yes, 1999
In the adiabatic approximation, most of the effects of quark-antiquark loops on spectroscopy can be absorbed into a static interquark potential. I develop a formalism which can be used to treat the residual nonadiabatic effects associated with the ...
Isgur, Nathan
core   +5 more sources

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