scholarly journals On Q-spectral integral variation

2009 ◽  
Vol 35 ◽  
pp. 203-208 ◽  
Author(s):  
Maria Aguieiras A. de Freitas ◽  
Renata R. Del-Vecchio ◽  
Nair M.M. de Abreu ◽  
Steve Kirkland
Keyword(s):  
Spectral Integral ◽  
Integral Variation

scholarly journals Quark-antiquark states and their radiative transitions in terms of the spectral integral equation: Light mesons

2007 ◽  
Vol 70 (3) ◽  
pp. 450-477 ◽  
Author(s):  
V. V. Anisovich ◽  
L. G. Dakhno ◽  
M. A. Matveev ◽  
V. A. Nikonov ◽  
A. V. Sarantsev
Keyword(s):  
Integral Equation ◽  
Radiative Transitions ◽  
Spectral Integral ◽  
Light Mesons

scholarly journals Fractional spectral integral methods for valuing cryptocurrency asset flow fractional differential equations.

2021 ◽  
Author(s):  
Claude Moutsinga ◽  
Edson Pindza ◽  
Eben Mare
Keyword(s):  
Differential Equation ◽  
Numerical Simulations ◽  
Fractional Differential Equations ◽  
Emerging Market ◽  
Three Dimensional ◽  
Operator Approach ◽  
Integral Methods ◽  
Spectral Integration ◽  
Spectral Integral ◽  
Fractional Differential

Since its inception in 2009, the cryptocurrency market has grown considerably. Several authors have proposed models to explain the price movements of assets in this new emerging market. However, only few researches have been done using the dynamical approach. This paper proposes a robust time fractional spectral method for studying a three dimensional fractional differential equation that models cryptocurrency asset flow obtained by utilizing the concept of liquidity price. The method relies on fractional spectral integration matrix operator approach. Numerical simulations are conducted to show efficiency of the numerical method on the fractional cryptocurrency model compared to existing methods.

scholarly journals LOW- TO MID-FREQUENCY SCATTERING FROM ELASTIC OBJECTS ON A SAND SEA FLOOR: SIMULATION OF FREQUENCY AND ASPECT DEPENDENT STRUCTURAL ECHOES

2012 ◽  
Vol 20 (02) ◽  
pp. 1240007 ◽  
Author(s):  
MARIO ZAMPOLLI ◽  
AUBREY L. ESPANA ◽  
KEVIN L. WILLIAMS ◽  
STEVEN G. KARGL ◽  
ERIC I. THORSOS ◽  
...  
Keyword(s):  
Scattering Problem ◽  
Three Dimensional ◽  
Element Model ◽  
Propagation Model ◽  
Target Strength ◽  
Unexploded Ordnance ◽  
Two Dimensional ◽  
Axially Symmetric ◽  
Sea Floor ◽  
Spectral Integral

The scattering from roughly meter-sized targets, such as pipes, cylinders and unexploded ordnance shells in the 1–30 kHz frequency band is studied by numerical simulations and compared to experimental results. The numerical tool used to compute the frequency and aspect-dependent target strength is a hybrid model, consisting of a local finite-element model for the vicinity of the target, based on the decomposition of the three-dimensional scattering problem for axially symmetric objects into a series of independent two-dimensional problems, and a propagation model based on the wavenumber spectral integral representation of the Green's functions for layered media.

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