Results 71 to 80 of about 341 (180)

Series Transformer Inrush Current Reduction in DVR Using Metaheuristic Optimisation Algorithms in Presence of Balanced and Unbalanced Voltage Sags

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
In this paper, a PI controller is improved for DVR to compensate voltage drops and reduce the series transformer inrush current effectively. The controller parameters are optimised using the modified arctic puffin optimisation (MAPO) algorithm in order to improve the performance of DVR.
Mohammad Ali Taghikhani
wiley   +1 more source

A Hybrid Group Method of Data Handling–Modified Particle Swarm Optimization Algorithm‐Local Outlier Factor for Short‐Term Load Forecasting in Microgrids

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
In this study, a novel approach to estimating the grid‐connected micro grid load is put forth. This research predicts the micro grid load with the method GMDH‐MPSO‐LOF. ABSTRACT Precision tools are required because load forecasting is essential for power system planning and optimal performance.
Houman Gadari, Hamidreza Akbari, Somayeh Mousavi, Zohreh Beheshtipour   +3 more
wiley   +1 more source

Identification of a time-dependent source term in a nonlocal problem for time fractional diffusion equation

Mathematical Modelling and Analysis
This paper is concerned with the inverse problem of recovering the time dependent source term in a time fractional diffusion equation, in the case of nonlocal boundary condition and integral overdetermination condition.
Mansur I. Ismailov, Muhammed Çiçek
doaj   +1 more source

Phase‐Lag Integro‐Partial Differential Equation: Local and Nonlocal Solutions

Advances in Mathematical Physics, Volume 2026, Issue 1, 2026.
Nonlocal information, such as material deformation, genetic genes, or the history of the disease, are essential as they provide us with additional details that increase the numerical solution’s accuracy. With the help of the phase delay, we may also predict the future of the phenomena we are researching.
Sameeha Ali Raad, Ivan Giorgio
wiley   +1 more source

On an integral equation of the Dirichlet problem for the heat equation in the degenerating domain

Қарағанды университетінің хабаршысы. Математика сериясы, 2016
This paper considers the first boundary value problem of heat conduction in a degenerating domain with a moving boundary, the boundary of the domain moves at a variable velocity.
M.T. Kosmakova
doaj  

The Problem of Eigenvalues in Some Singular Homogeneous Volterra Integral Equations [PDF]

Proceedings of the American Mathematical Society, 1974
It is shown that when the kernel of a homogeneous Volterra integral equation is singular, it is possible for there to be a continuous spectrum of eigenvalues.
openaire   +2 more sources

Convergence Analysis of the Tau Method for Volterra–Fredholm Integrodifferential Equations With Weakly Singular Kernel

Journal of Applied Mathematics
This work focuses on the analysis of the Volterra–Fredholm integral equation (VFIE) with a weakly singular kernel, which is a transformed form of a partial integrodifferential equation (PIDE) with a weakly singular kernel. We present an approach based on
Javad Shokri, Saeed Pishbin, Ahmed M. Rajab   +2 more
doaj   +1 more source

On the functional-integral equation of Volterra type with weakly singular kernel [PDF]

Publications de l'Institut Mathematique, 2008
We give sufficient conditions for the existence of Lp-solution of a Volterra functional-integral equation in a Banach space. Our assumptions and proofs are expressed in terms of measures of noncompactness.
openaire   +2 more sources

Toeplitz Matrix Method and Nonlinear Volterra–Fredholm Integral Equation With Hilbert Kernel

Computational and Mathematical Methods
This work emphasizes the investigation of the solution to the nonlinear Volterra–Fredholm integral equation (NV-FIE) and the necessary conditions for a unique solution.
Sameeha Ali Raad, Ahlam Yahya Alabdali
doaj   +1 more source

Singularly perturbed Volterra integral equations with weakly singular kernels [PDF]

International Journal of Mathematics and Mathematical Sciences, 2002
We consider finding asymptotic solutions of the singularly perturbed linear Volterra integral equations with weakly singular kernels. An interesting aspect of these problems is that the discontinuity of the kernel causes layer solutions to decay algebraically rather than exponentially within the initial (boundary) layer. To analyse this phenomenon, the
openaire   +2 more sources