University of Bojnord

A new metaheuristic optimization algorithm based on COVID-19: mathematical model and application to pandemic control

Abstract This paper introduces the COVID-19 optimization algorithm (COA), a novel metaheuristic inspired by the dynamical processes of the SARS-CoV-2 pandemic, including viral transmission, quarantine measures, recovery, and mutation. COA models the search for optimal solutions t...

Optimization of biodiesel production via oleic acid esterification over a novel NiMoO4 catalyst supported on functionalized lightweight expanded clay aggregate (LECA)

This study evaluates a nickel molybdate catalyst supported on functionalized lightweight expanded clay aggregate NiMoO 4 -f-LECA synthesized via a microwave-assisted route for biodiesel production. Characterization confirmed the successful dispersion of NiMoO4 nanoparticles, yiel...

Fractional Euler-Lagrange modeling of a pendulum with a vertically vibrating pivot

This study develops classical and fractional variational models for a simple pendulum whose pivot undergoes prescribed vertical harmonic motion. The nonlinear classical equation of motion and its small-angle, Mathieu-type reduction are first derived from the Euler-Lagrange equati...