云南高校图书馆联盟文献共享服务平台- AGE-STRUCTURE

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Hopf Bifurcation of Nonresident Computer Virus Model with Age Structure and Two Delays Effects: 《Journal of Applied Mathematics and Physics》2023年第8期2318-2342,共25页Yaoyu Dang Hongwu Tan Hui Cao; This paper constructed and studied a nonresident computer virus model with age structure and two delays effects. The non-negativity and boundedness of the solution of the model have been discussed, and then gave the b...; 关键词：The Computer Virus Model AGE-STRUCTURE Two Delays Stability Hopf Bifurcation

Time-dependent force of infection and effective reproduction ratio in an age-structure dengue transmission model in Bandung City,Indonesia: 《Infectious Disease Modelling》2022年第3期430-447,共18页Juni Wijayanti Puspita Muhammad Fakhruddin Nuning Nuraini Edy Soewono; Part of the research is funded by the Indonesian PDUPT RistekBrin 2021(No:120M/IT1.C02/TA.00/2021);the Indonesian Penelitian Disertasi Doktor RistekBrin 2021(No:120J/IT1.C02/TA.00/2021).; Dengue virus infection is a leading health problem in many endemic countries,including Indonesia,characterized by high morbidity and wide spread.It is known that the risk factors that influence the transmission intens...; 关键词：age structure model dengue transmission effective reproduction ratio force of infection

Global dynamics for a TB transmission model with age-structure and delay: 《International Journal of Biomathematics》2020年第7期1-28,共28页Dongxue Yan Hui Cao Suxia Zhang; supported by the National Infect ious Disease Science and Technology Major Project Grant 2017ZX10201302-007;by the National Natural Science Foun-dation of China(Grant Nos.11926328,11926329,11971281 and 11501443);by the Natural Science Basic Research Plan in Shaanxi Province of China Grant 2020JQ-693;by the Natural Science Foundation of Shaanxi Provincial Department of Education Grant 18JK0092;supported by the NUPTSF(Grant No.NY220093).; This paper deals with the global dynamics of a tuberculosis(TB)model with agestructure and delay.We perform some rigorous analyses for the model,including presenting an explicit formula for the basic reproduction numb...; 关键词：Age-structured TB model Go-semigroup the delay uniform persistence STABILITY

Evaluation of the performance of alternative assessment configurations to account for the spatial heterogeneity in age-structure: a simulation study based on Indian Ocean albacore tuna被引量：1: 《Acta Oceanologica Sinica》2019年第10期9-19,共11页Wenjiang Guan Jiawen Wu Siquan Tian; The National Key Research and Development Program of China under contract No.2016YFC1400903;the NSFC Zhejiang Joint Fund for the Integration of Industrialization and Informatization under contract No.U1609202; Various population structures or spatial heterogeneities in population distribution have been an important source of model misspecification and have had an impact on estimation performance in fisheries stock assessmen...; 关键词：spatial structure simulation stock assessment INDIAN OCEAN THUNNUS alalunga

An age-structured epidemic model with waning immunity and general nonlinear incidence rate被引量：1: 《International Journal of Biomathematics》2018年第5期175-199,共25页Xia Wang Ying Zhang Xinyu Song; In this paper, a susceptible-vazcinated-exposed-infectious-recovered epidemic model with waning immunity and continuous age structures in vaccinated, exposed and infectious classes has been formulated. By using the Fl...; 关键词：Age-structure epidemic model nonlinear incidence rate basic reproduction number global stability Lyapunov functional.

Global stability of multi-group SEIRS epidemic models with vaccination: 《International Journal of Biomathematics》2018年第1期143-174,共32页Dejun Fan Pengmiao Hao Dongyan Sun Junjie Wei; This research is supported by National Natural Science Foundation of China （No. 11371111）, Weihai Science and Technology Development Plan Project （No. 2013DXGJ06） and Shandong Provincial Natural Science Foundation of China （No. ZR2015AM018）.; In this paper, a susceptible-exposed infective-recovered-susceptible （SEIRS） epidemic model with vaccination has been formulated. We studied the global stability of the corresponding single-group model, multi-group ...; 关键词：Epidemic model coupled systems global stability Lyapunov functional AGE-STRUCTURE connectivity.

Global properties within-host model for an age-structured with Crowley-Martin functional response: 《International Journal of Biomathematics》2017年第2期249-263,共15页Shaoli Wang Xinyu Song; Based on a multi-scale view, in this paper, we study an age-structured within-host model with Crowley-Martin functional response for the control of viral infections. By means of semigroup and Lyapunov function, the gl...; 关键词：Within-host virus model AGE-STRUCTURE global asymptotical stable Lyapunovfunction.

OPTIMAL CONTROL FOR A NONLINEAR n-DIMENSIONAL COMPETING SYSTEM WITH AGE-STRUCTURE被引量：1: 《International Journal of Biomathematics》2012年第3期133-144,共12页ZHI-XUE LUO JIAN-YU YANG YA-JUAN LUO; This paper is concerned with optimal harvesting control of a first order partial differential equation system representing a nonlinear n-dimensional competitive population model with age-structure. By the Ekeland＇s v...; 关键词：Optimal control AGE-DEPENDENCE COMPETITION the maximum principle.

Global positive periodic solutions of age-dependent competing systems: 《Applied Mathematics(A Journal of Chinese Universities)》2011年第1期38-46,共9页HE Ze-rong LIU Li-li LUO Zhi-xue; Supported by the National Natural Science Foundation of China (10771048, 11061017); This paper is to investigate positive periodic solutions of a biological system composed of two competing species. The existence and uniqueness of nonnegative solutions to the model for a set of given vital rates and ...; 关键词：Population dynamics AGE-STRUCTURE Poincare mapping fixed point.

Current Situation and Prospects for the Urbanization of Chinese Migrant Workers被引量：1: 《Social Sciences in China》2010年第3期168-193,共26页章铮; This article uses the age-structure/life-cycle method to analyze the impact of migrant workers’ employment on their urbanization. Since enterprises tend to employ younger workers and unemployed migrant workers tend t...; 关键词：urbanization of migrant workers employment of migrant workers age-structure/ life-cycle model length of employment middle-aged unemployment

AGE-STRUCTURE