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The malaria transmission in Anhui province China
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作者 Eric Kamana Di Bai +1 位作者 Heidi E.Brown Jijun Zhao 《Infectious Disease Modelling》 CSCD 2023年第1期1-10,共10页
Plasmodium vivax and Plasmodium falciparum cases have opposite trends in Anhui China in the past decade.Long term and seasonal trends in the transmission rate of P.falciparum in Africa has been well studied,however th... Plasmodium vivax and Plasmodium falciparum cases have opposite trends in Anhui China in the past decade.Long term and seasonal trends in the transmission rate of P.falciparum in Africa has been well studied,however that of P.vivax transmitted by Anopheles sinensis in China has not been investigated.There is a lot of work on the relationship between P.vivax cases and climatic factors in China,with sometimes contradicting results.However,how climatic factors affect transmission rate of P.vivax in China is unknown.We used Anhui province as an example to analyze the recent transmission dynamics where two types of malaria have been reported with differing etiologies.We examined breakpoints of the P.vivax and P.falciparum malaria long term dynamics in the recent decade.For locally transmitted P.vivax malaria,we analyzed the transmission rate and its seasonality using the combined human and mosquitos SIR-SI model with time-varied mosquito biting rate.We identified the effects of meteorological factors on the seasonality in transmission rate using a GAM model.For the imported P.falciparum ma-laria,we analyzed the potential reason for the observed increase in cases.The breakpoints of P.vivax and P.falciparum dynamics happened in a same year,2010.The seasonality in the transmission rate of P.vivax malaria was high(42.4%)and was linearly associated with temperature and nonlinearly with rainfall.The abrupt increase in im-ported P.falciparum cases after the breakpoint was significantly related to the increased annual Chinese investment in Africa.Under the conditions of the existing vectors of malaria,long-term trends in climatic fac-tors,and increasing trend in migration to/from endemic areas and imported malaria cases,we should be cautious of the possibility of the reestablishment of malaria in regions where it has been eliminated or the establishment of other vector-borne diseases. 展开更多
关键词 BREAKPOINT transmissionrate Biting rate SEASONALITY Climatic factors
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基于区分队列服务的多媒体传感器网络QoS研究
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作者 唐琳 姜胜明 杨花荣 《华南理工大学学报(自然科学版)》 EI CAS CSCD 北大核心 2012年第8期8-13,共6页
随着无线多媒体传感器网络的迅速发展,如何为其提供服务质量保证成为了热点问题.为了使实时数据能够得到优先服务,文中在无线多媒体传感器网络中引进了区分队列服务算法.首先分析了区分队列服务的原理,然后根据数据源的发送速率与带宽... 随着无线多媒体传感器网络的迅速发展,如何为其提供服务质量保证成为了热点问题.为了使实时数据能够得到优先服务,文中在无线多媒体传感器网络中引进了区分队列服务算法.首先分析了区分队列服务的原理,然后根据数据源的发送速率与带宽的关系,分3种情况讨论了实时分组生存时间、标量分组生存时间和转发节点最大队列长度之间的关系.当这一关系满足一定条件时,实时分组能够被快速及时地转发.最后通过仿真实验证明了文中方法的正确有效性. 展开更多
关键词 无线多媒体传感器网络 服务质量 区分队列服务 分组生存时间 发送速率 带宽
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