Results 1 to 10 of about 11,559,793 (316)

Equation-of-Motion Coupled-Cluster Cumulant Green’s Function for Excited States and X-Ray Spectra [PDF]

open access: yesFrontiers in Chemistry, 2021
Green’s function methods provide a robust, general framework within many-body theory for treating electron correlation in both excited states and x-ray spectra.
F. D. Vila   +4 more
doaj   +2 more sources

Improvement of a Green’s Function Estimation for a Moving Source Using the Waveguide Invariant Theory [PDF]

open access: yesSensors
Understanding the characteristics of underwater sound channels is essential for various remote sensing applications. Typically, the time-domain Green’s function or channel impulse response (CIR) is obtained using computationally intensive acoustic ...
Daehwan Kim   +4 more
doaj   +2 more sources

Steady-Periodic Green’s Functions and Thermal-Measurement Applications in Rectangular Coordinates

open access: greenHeat Transfer, Part B, 2005
Two-dimensional steady-periodic heat transfer in rectangles, slabs, and semi-infinite bodies is treated with the method of Green’s functions. The application is the measurement of thermal properties. Several types of boundary conditions are treated systematically, including convection conditions and boundaries containing a thin, high-conductivity film.
Kevin D. Cole
openaire   +5 more sources

On green’s function of second darboux problem for hyperbolic equation

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
A definition and justify a method for constructing the Green’s function of the second Darboux problem for a two-dimensional linear hyperbolic equation of the second order in a characteristic triangle is given.
B. Derbissaly
doaj   +1 more source

Green’s function for the semi-infinite strip in terms of an improper integral [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2020
In this paper Green’s function for the semi-infinite strip (which is the two-dimensional Green’s function for a groove of infinite depth and length) is determined in the form of an improper integral, as opposed to the standard summation form ...
Filipović Dragan, Dlabač Tatijana
doaj   +1 more source

Steklov problem for a linear ordinary fractional delay differential equation with the Riemann-Liouville derivative [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
This paper studies a nonlocal boundary value problem with Steklov’s conditions of the first type for a linear ordinary delay differential equation of a fractional order with constant coefficients.
M.G. Mazhgikhova
doaj   +3 more sources

On Green’s function of Cauchy–Dirichlet problem for hyperbolic equation in a quarter plane

open access: yesBoundary Value Problems, 2021
The definition of a Green’s function of a Cauchy–Dirichlet problem for the hyperbolic equation in a quarter plane is given. Its existence and uniqueness have been proven. Representation of the Green’s function is given.
Makhmud Sadybekov, Bauyrzhan Derbissaly
doaj   +1 more source

Far-field approximations to the derivatives of Green’s function for the Ffowcs Williams and Hawkings equation

open access: yesAdvances in Aerodynamics, 2022
The surface correction to the quadrupole source term of the Ffowcs Williams and Hawkings integral in the frequency domain suffers from the computation of high-order derivatives of Green’s function. The far-field approximations to the derivatives of Green’
Zhiteng Zhou   +3 more
doaj   +1 more source

Numerically Stable form of Green’s Function for a Free-Free Uniform Timoshenko Beam

open access: yesMathematics, 2022
Beam models are widely applied in civil engineering, transport, and industry because the beams are basic structural elements. When dealing with the high-order modes of beam in the context of applying the modal analysis method, the numerical instability ...
Traian Mazilu
doaj   +1 more source

Constant-Sign Green’s Function of a Second-Order Perturbed Periodic Problem

open access: yesAxioms, 2022
In this paper, we were interested in obtaining the exact expression and studying the regions of constant sign of Green’s function related to a second-order perturbed periodic problem coupled with integral boundary conditions at the extremes of the ...
Alberto Cabada   +2 more
doaj   +1 more source

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