The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we propose a stochastic SIQS epidemic model with Lévy jumps and investigate sufficient conditions of the extinction and persistence of the disease. Then, we analyze the asymptotic behavior of the solution of the model around the endemic equilibrium of the corresponding deterministic model. We find that Lévy jumps can suppress the disease outbreak. Numerical simulations are carried out...
In this paper, we propose a kind of quitting smoking model with age structure, in which we consider two control measures, i,e., propaganda and education for the public and treatment for the smokers, in order to achieve the desired effect of smoking cessation. We calculated the threshold of smoking, and put forward an objective function. Based on Pontryagin Maximum Principle(PMP), we discuss issues...
In this paper, we formulate a kind of SIS-type Hand, Foot and Mouth Disease(HFMD) model in a short time interval (no more than ten years), in which we sufficiently consider the characteristics of seasonal variation and use periodic infection rate β(t) to describe it. Based on the available data of HFMD in china which is released monthly by Chinese Ministry of Health from 2009 to 2014(see the appendix),...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.