Results 61 to 70 of about 427 (162)

Growth rate, evolutionary entropy and ageing across the tree of life

Journal of Biological Dynamics, 2023
The growth rate of a population serves as a measure of its Darwinian fitness, while its sensitivity indicates the intensity of selection. Generally, the sensitivity of r decreases with age, resulting in an expected increase in population mortality over ...
Jorge Buescu, Henrique M. Oliveira, Mónica Sousa   +2 more
doaj   +1 more source

Global periodic solutions in a plankton-fish interaction model with toxication delay

Nonlinear Engineering, 2018
In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
doaj   +1 more source

Evaluation of TB elimination strategies in Canadian Inuit populations: Nunavut as a case study

Infectious Disease Modelling, 2022
Tuberculosis (TB) continues to disproportionately affect Inuit populations in Canada with some communities having over 300 times higher rate of active TB than Canadian-born, non-Indigenous people. Inuit Tuberculosis Elimination Framework has set the goal
Elaheh Abdollahi, Yoav Keynan, Patrick Foucault, Jason Brophy, Holden Sheffield, Seyed M. Moghadas   +5 more
doaj   +1 more source

Global stability analysis and control of leptospirosis

Open Mathematics, 2016
The aim of this paper is to investigate the effectiveness and cost-effectiveness of leptospirosis control measures, preventive vaccination and treatment of infective humans that may curtail the disease transmission. For this, a mathematical model for the
Okosun Kazeem Oare, Mukamuri M., Makinde Daniel Oluwole   +2 more
doaj   +1 more source

Mathematical modelling of growth of tumour cells with chemotherapeutic cells by using Yang–Abdel–Cattani fractional derivative operator

Journal of Taibah University for Science, 2022
Cancer is a fatal disease for a very long time. It has its own history. Now it has become one of the major reasons for death due to its various types. Researchers, scientists and doctors are trying to find out the success and minimize the death rate in ...
Manvendra Narayan Mishra, A. F. Aljohani
doaj   +1 more source

Control in dormancy or eradication of cancer stem cells: Mathematical modeling and stability issues

, 2018
International audienceObjective: Modeling and analysis of cell population dynamics enhance our understanding of cancer. Here we introduce and explore a new model that may apply to many tissues.
Fridman, Emilia, Pierre Hirsch, Djema, Walid, Jean Clairambault, Bonnet, Catherine, Mazenc, Frédéric, Delhommeau, François, Frédéric Mazenc, Clairambault, Jean, Walid Djema, Hirsch, Pierre, Catherine Bonnet, Emilia Fridman, François Delhommeau   +13 more
core   +1 more source

The role of prostitution on HIV transmission with memory: A modeling approach

Alexandria Engineering Journal, 2020
HIV is a topic that has been greatly discussed and researched due to its impact on human population. Many campaigns have been put into place, and people have been made aware of the various effects of the disease.
Parvaiz Ahmad Naik, Mehmet Yavuz, Jian Zu   +2 more
doaj   +1 more source

Optimal control and bifurcation analysis of SEIHR model for COVID-19 with vaccination strategies and mask efficiency

Computational and Mathematical Biophysics
In this article, we present a susceptible, exposed, infected, hospitalized and recovered compartmental model for COVID-19 with vaccination strategies and mask efficiency. Initially, we established the positivity and boundedness of the solutions to ensure
Muthu Poosan Moopanar, Kumar Anagandula Praveen   +1 more
doaj   +1 more source

A mathematical study of the adrenocorticotropic hormone as a regulator of human gene expression in adrenal glands

Computational and Mathematical Biophysics
In this research, we have introduced compartments for asymptomatic and symptomatic individuals, along with reduced susceptibility, as key factors defining our investigation.
Manickam A., Jaison A. Benevatho, Lakshmi D., Singh Ram, Pravina C. T. Dora   +4 more
doaj   +1 more source

Global properties of virus dynamics with B-cell impairment

Open Mathematics, 2019
In this paper we construct a class of virus dynamics models with impairment of B-cell functions. Two forms of the incidence rate have been considered, saturated and general. The well-posedness of the models is justified.
Elaiw Ahmed M., Alshehaiween Safiya F., Hobiny Aatef D.   +2 more
doaj   +1 more source