http://idl-bnc.idrc.ca:80/dspace/handle/10625/49276 2013-05-25T11:14:50Z http://idl-bnc.idrc.ca:80/dspace/handle/10625/49804 Title: Numerical evaluation of new control method for schistosomiasis Authors: Junwei, Zhao; Tingting, Ouyang; Guanghang, Ding Abstract: Schistosomiasis is a kind of common disease around the riverside or lakeside areas, especially popular in rural areas, and causes huge economic loss. Based on existing schistosomiasis dynamic models and data, a new method of working out coefficients, and an improved model were provided in our study. The improved model can be applied to the study of the characteristics of transmission of schistosomiasis, and the effect of new control methods for schistosomiasis was evaluated. Description: Article in Chinese 2011-01-01T00:00:00Z http://idl-bnc.idrc.ca:80/dspace/handle/10625/49803 Title: Modelling disease spread in dispersal networks at two levels Authors: Xiao, Yanni; Zhou, Yicang; Tang, Sanyi Abstract: A network model at both the population and individual levels, which simulates both between-patch and within-patch dynamics, is proposed. We investigated the effects of dispersal networks and distribution of local dynamics on the outcome of an epidemic at the population level. Numerical studies show that disease control on random networks may be easier than on small-world networks, depending on the initial distribution of the local dynamics. Spatially separating instead of gathering patches where disease locally persists is beneficial to global disease control if dispersal networks are a type of small-world networks. Dispersal networks with higher degree lead to a higher mean value of R0. Furthermore, irregularity of network and randomization are beneficial to disease stabilization and greatly affect the resulting global dynamics. 2010-01-01T00:00:00Z http://idl-bnc.idrc.ca:80/dspace/handle/10625/49802 Title: Mathematical Modeling and Dynamics of HIV Progression and Treatment Authors: Wang, Yan; Zhou, Yi-cang Abstract: This article presents a brief review on the modeling and dynamics of HIV infection in vivo. We introduce typical mathematical models on the interaction between CD4~+ T-cells and virus particles, as well as the drug therapy. We focus on theoretical results and simulations of ODEs, DDEs, integro-differential equations and impulsive differential equations. Parameter values of those models are collected in a table for reader’s reference. 2010-01-01T00:00:00Z http://idl-bnc.idrc.ca:80/dspace/handle/10625/49801 Title: The effects of population dispersal and pulse vaccination on disease control Authors: Yang, Youping; Xiao, Yanni Abstract: In this paper, we investigate a nonautonomous SIR type epidemic model with pulse vaccination in patchy environments. We obtain a threshold parameter which governs the extinction or the uniform persistence of the disease by applying Floquet theory and the comparison theorem of impulsive differential equations. Numerical results indicate that population dispersal has significant effects on disease transmission. Varying the population dispersal rates between two patches in which the disease would die out if they had remained isolated, could allow the disease to persist globally. Alternatively, similar variations between patches where the disease would be persistent if isolated can lead to extinction globally. Finally, the model was generalized and we extended the definition of the basic reproduction number in a continuous (autonomous or periodic) system to that for a hybrid system as the spectral radius of the next infection operator. 2010-01-01T00:00:00Z http://idl-bnc.idrc.ca:80/dspace/handle/10625/49800 Title: The dynamics of an interactional model of rabies transmitted between human and dogs Authors: Yang, Wei; Lou, Jie 2009-01-01T00:00:00Z