Hybrid functions for nonlinear initial-value problems with applications to Lane–Emden type equations

HR Marzban, HR Tabrizidooz, M Razzaghi - Physics Letters A, 2008 - Elsevier
A numerical method for solving nonlinear initial-value problems is proposed. The Lane–
Emden type equations which have many applications in mathematical physics are then …

The study of inrush current phenomenon using operational matrices

JJ Rico, E Acha, M Madrigal - IEEE Transactions on Power …, 2001 - ieeexplore.ieee.org
The paper presents a new methodology for calculating magnetizing inrush currents.
Similarly to the seminal work of Rajakovic and Semlyen, all the calculations are conducted …

New computational technique based on Bernstein polynomials and higher order finite difference schemes for temporal and spatial reactor calculations

YM Hamada - Annals of Nuclear Energy, 2023 - Elsevier
In this research, two main objectives about solving the space time dependent diffusion
equations are addressed. The first is to present higher order finite difference schemes at the …

Solution of Volterra's population model via block‐pulse functions and Lagrange‐interpolating polynomials

HR Marzban, SM Hoseini… - Mathematical Methods in …, 2009 - Wiley Online Library
A numerical method for solving Volterra's population model for population growth of a
species in a closed system is proposed. Volterra's model is a nonlinear integro‐differential …

Numerical solution of time-delay optimal control problems by the operational matrix based on Hartley series

M Dadkhah, K Mamehrashi - Transactions of the Institute of …, 2022 - journals.sagepub.com
In this paper, a numerical technique based on the Hartley series for solving a class of time-
delayed optimal control problems (TDOCPs) is introduced. The main idea is converting such …

Steady and transient solutions of neutron diffusion equations via computational methods based on Hartley series and higher order finite difference schemes

YM Hamada - Annals of Nuclear Energy, 2024 - Elsevier
In this work, new accurate solutions based on Hartley series expansion for temporal
calculations and higher order finite difference schemes for space derivative calculations are …

Composite spectral functions for solving Volterra's population model

M Ramezani, M Razzaghi, M Dehghan - Chaos, Solitons & Fractals, 2007 - Elsevier
An approximate method for solving Volterra's population model for population growth of a
species in a closed system is proposed. Volterra's model is a nonlinear integro-differential …

Hartley series approximations for the parabolic equations

A Saadatmandi, M Razzaghi… - International Journal of …, 2005 - Taylor & Francis
An approximate method for solving parabolic equations with a periodic boundary condition
is proposed. The method is based upon using the Legendre series and the Hartley series to …

[PDF][PDF] Direct walsh-hybrid method for variational problems

Y Ordokhani - International Jornal of Nonlinear Science, 2011 - researchgate.net
A direct Ritz method for solving variational problems with fixed and free boundary conditions
is demonstrated. Walsh-hybrid method bases are used as the basis functions. It is shown …

Parameter estimation of linear systems based on Walsh series

II Lazaro, J Anzurez, JD Roman - 2009 Electronics, Robotics …, 2009 - ieeexplore.ieee.org
This paper presents a frequency domain based methodology using Walsh series, the
method can be used to make a parameter identification of time-varying linear systems and …