Memory is an important characteristic of an epidemic. One of such memory dependent and
highly contagious viral diseases is measles that is also responsible for more than 140,000 …

In this article, an integer order nonlinear HIV/AIDS infection model is extended to the non-
integer nonlinear model. The Grunwald Letnikov nonstandard finite difference scheme is …

We suggest a novel mathematical framework for the in-homogeneous spatial spreading of
an infectious disease in human population, with particular attention to COVID-19. Common …

We introduce novel epidemic models with single and two strains described by systems of
delay differential equations with a periodic time-dependent disease transmission rate, and …

In this article, a dynamical model with advection-diffusion, elucidating the transmission
process of disease infection type computer virus, is studied. Such kind of systems help to …

A compartmental epidemiological model with distributed recovery and death rates is
proposed. In some particular cases, the model can be reduced to the conventional SIR …

Background and objective: Epidemic models are used to describe the dynamics of
population densities or population sizes under suitable physical conditions. In view that …

In recent years measles has been one of the most critical public health problem in
Bangladesh. Although the Ministry of Health in Bangladesh employs a broad extension of …

Immuno-epidemiological models with distributed recovery and death rates can describe the
epidemic progression more precisely than conventional compartmental models. However …

In this paper, a forced vibration model of composite beams under the action of periodic
excitation force considering geometric nonlinearity is proposed. For the strain–displacement …