Results 61 to 70 of about 2,133 (160)

Analytic approximate eigenvalues by a new technique. Application to sextic anharmonic potentials

open access: yesResults in Physics, 2018
A new technique to obtain analytic approximant for eigenvalues is presented here by a simultaneous use of power series and asymptotic expansions is presented.
D. Diaz Almeida, P. Martin
doaj   +1 more source

Significance of thermal stress in a convective-radiative annular fin with magnetic field and heat generation: application of DTM and MRPSM

open access: yesPropulsion and Power Research, 2022
The present paper explains the temperature attribute of a convective-radiative rectangular profiled annular fin with the impact of magnetic field. The effect of thermal radiation, convection, and magnetic field on thermal stress distribution is also ...
Ganeshappa Sowmya   +4 more
doaj   +1 more source

Modeling Dynamic Electrochemical Impedance Spectroscopy Using a Linearization Technique

open access: yesChemElectroChem, Volume 12, Issue 18, September 15, 2025.
This article investigates the modeling of dynamic electrochemical impedance spectroscopy. Using a linearization technique, three mathematical models are defined – dynamic, stationary, and filtered. The results show a closeness of the dynamic model to the experimental practice and significant effects of nonstationarity in the low‐frequency region.
Cécile Pot d'or   +3 more
wiley   +1 more source

A New Special Function and Its Application in Probability

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2018
In this note we present a new special function that behaves like the error function and we provide an approximated accurate closed form for its CDF in terms of both Chèbyshev polynomials of the first kind and the error function.
Zeraoulia Rafik   +2 more
doaj   +1 more source

New asymptotic expansions and Padé approximants related to the triple gamma function

open access: yesJournal of Inequalities and Applications, 2022
In this work, our main focus is to establish asymptotic expansions for the triple gamma function in terms of the triple Bernoulli polynomials. As application, an asymptotic expansion for hyperfactorial function is also obtained.
Sourav Das, A. Swaminathan
doaj   +1 more source

Padé-approximant corrections to general variational expressions of scattering theory: Application to 5σ photoionization of carbon monoxide [PDF]

open access: yes, 1983
We discuss a method for systematically correcting results obtained using variational expressions in scattering theory. The approach taken is to compute a sequence of Padé approximants of the form [N/N] for the error in an initial variational estimate ...
Lucchese, Robert R., McKoy, Vincent
core   +1 more source

Artificial Neural Networks Fitting of Potential Energy Curves and Surfaces: The 1/R Conundrum

open access: yesJournal of Computational Chemistry, Volume 46, Issue 24, September 15, 2025.
ANN fit of electronic energies and adding internuclear repulsion gives accurate potential energy surfaces. ABSTRACT Within the Born‐Oppenheimer approximation, the potential energy of a molecular system is written as a sum of electronic energy and nuclear‐nuclear repulsion energy terms.
Siddhuram Rana   +3 more
wiley   +1 more source

N $$ \mathcal{N} $$ = 4 supersymmetric Yang-Mills thermodynamics to order λ 2

open access: yesJournal of High Energy Physics, 2021
We calculate the resummed perturbative free energy of N $$ \mathcal{N} $$ = 4 supersymmetric Yang-Mills in four spacetime dimensions (SYM4,4) through second order in the ’t Hooft coupling λ at finite temperature and zero chemical potential.
Qianqian Du   +2 more
doaj   +1 more source

Analyticity and Stable Computation of Dirichlet–Neumann Operators for Laplace's Equation Under Quasiperiodic Boundary Conditions in Two and Three Dimensions

open access: yesStudies in Applied Mathematics, Volume 154, Issue 5, May 2025.
ABSTRACT Dirichlet–Neumann operators (DNOs) are important to the formulation, analysis, and simulation of many crucial models found in engineering and the sciences. For instance, these operators permit moving‐boundary problems, such as the classical water wave problem (free‐surface ideal fluid flow under the influence of gravity and capillarity), to be
David P. Nicholls   +2 more
wiley   +1 more source

Numerical Solution of Riccati Equations by the Adomian and Asymptotic Decomposition Methods over Extended Domains

open access: yesInternational Journal of Differential Equations, 2015
We combine the Adomian decomposition method (ADM) and Adomian’s asymptotic decomposition method (AADM) for solving Riccati equations. We investigate the approximate global solution by matching the near-field approximation derived from the Adomian ...
Jafar Biazar, Mohsen Didgar
doaj   +1 more source

Home - About - Disclaimer - Privacy