An SIS epidemic model with standard incidence rate is investigated.
研究一类具有标准发生率的SIS传染病模型。
An SI epidemic model with standard incidence rate as follow is investigated.
研究如下一类具有标准发生率的SI型传染病模型。
In this paper we formulate an epidemic model with chronological age and infectious age structure.
本文根据流行病的传染过程和机理建立了具有年龄和病程结构的流行病模型。
In the paper, the function structure, propagation mechanism and the SIR epidemic model are introduced.
本文介绍了网络蠕虫病毒的功能结构、传播机制以及SIR流行病传播模型。
The existence and uniqueness of nonnegative solution for a class of age-structured SEIR epidemic model;
通过初等方法，证明了此冗余系统非负解的存在唯一性。
There have been many studies of continuous epidemic model through differential equations, but little research on discrete models.
用微分方程建立连续型传染病模型的研究较多，但是研究离散模型的较少。
In Chapter 1, an SIS epidemic model with staged treatment function is proposed where the disease-related death rate is negligible.
第一章主要研究了含有分段形式治疗函数且忽略疾病致死率的SIS传染病模型。
In the first section, the SEI epidemic model with a general contact rate and infectious force in the latent period is investigated.
第一部分研究了具有一般形式接触率潜伏期有传染力的SEI模型。
The dynamic behaviors of a kind of SIR epidemic model with two different vaccination strategies and saturation infectious force are researched.
研究了两类不同免疫方式下具有饱和传染力的SIR流行病模型的动力学行为。
Objective to build an epidemic model of severe acute respiratory syndrome (SARS) to be used to quantitatively evaluate the effectiveness of intervention measures.
目的建立一种可以用于严重急性呼吸综合征(SARS)干预措施效果定量评价的传播动力学模型。
A two-strain SIR epidemic model is discussed and an explicit formula for the basic reproductive number is derived by analyzing the local stability of the trivial equilibrium.
讨论了一类由两种不同病毒导致的SIR流行病模型，分析了平凡平衡点的局部稳定性，得到了基本再生数的数学表达式；
In this paper, the sis epidemic model with stage structure consisting immature and mature is considered. The threshold is founded which the epidemic will become endemic or die out.
讨论了具有阶段结构的SIS传染病模型，给出了传染病最终消除和成为地方病的阈值。
In the second section, considering the permanent immunity factor, the SEIR epidemic model with infectious force in the latent period which makes the model more universal is investigated.
第二部分考虑了永久免疫力因素，研究了一类潜伏期具有传染力的SEIR模型，使模型更具有广泛性。
The report on tuberculosis control provides a model of the value of monitoring a programme’s operational performance as well as its impact on an epidemic.
关于结核控制的报告提供了一个模式，说明了监测规划执行绩效及其对流行病影响的价值。
These estimates were in agreement with the output from the model, in which the bias varied according to the magnitude and stage of the epidemic of HIV infection and background mortality rates.
这些估算结果与模型输出一致，其中具体的偏倚情况视不同的艾滋病毒病毒感染程度和阶段以及死亡率背景而有所不同。
And with child obesity becoming an epidemic, they decided to make Cookie Monster a healthier role model.
但是，随着儿童肥胖症的流行蔓延，他们决定让饼干怪兽变成一个更健康的人物榜样。
We deeply investigate some statistical properties of local-world evolving networks and temporal behavior of epidemic spreading on such this evolving model.
我们深入研究了局域世界演化网络的一些统计特性以及发生在该模型网络上疾病传播的时间行为。
In this paper, a Daqing area epidemic encephalitis diseases forecasting model making use of grey system theory proposed by professor Deng Julong and method of weight function was built.
本文利用邓聚龙教授提出的灰色系统理论，采用权函数生成法，建立了大庆地区流脑疾病的预测模型。
Especially, realism meaning of the systems describing the growth of species and the behavior of epidemic dynamics. Its result of the model become scientific and true.
因为脉冲的现实意义，尤其是对人口的增长，及传染病模型显得非常科学和真实。
Aim Dynamical behavior of a kind of nonlinear SEIRS model of epidemic spread with the saturated rate, which has infective force in both latent period and infected period, is studied.
目的研究一类具有饱和接触率且潜伏期、染病期均传染的非线性SEIRS流行病传播数学模型动力学性质。
The characteristics of epidemic disease were analyzed and a differential equation model for epidemic disease spreading was set.
分析了传染病的传播扩散特点，建立了传染病传播扩散的微分方程模型。
In the 80's of the 20 century, Macdonald model was used widely in the malaria epidemic area.
在20世纪80年代，应用该模型对疟疾暴发流行区进行了广泛研究。
Using a survival model, a new model with some biological meaning for plant disease epidemic was derived in this paper.
本文利用统计分析中的生存模型导出一个新的植病流行模型，该模型具有一定的生物学意义和应用价值。
Therefore, "freemium" this kind of model at the beginning of the epidemic.
因此，“免费增值”这类的模型开始流行。
This model provide theoretical basis for (preventing) and controlling the propagation of the epidemic.
此模型为传染病的预防和控制提供了理论依据。
The temporal dynamic of epidemic of the top blight of P. heteroc-ycla is of the polyetic epidemic disease, which follows a Logistic model.
毛竹枯梢病在林间流行的时间动态属于积年流行病害，遵循罗辑斯蒂模型。
This model provided theoretical basis for preventing and controlling the propagation of the epidemic.
此模型为传染病的预防和控制提供了理论依据。
In further details, this paper discussed the epidemic threshold for disease spreading using SIR model with piecewise linear infectivity on scale-free networks.
具体讨论了具有分片线性传染力的SIR模型在无标度网络上的流行病传播阈值，并运用分片线性传染力得到了传播阈值为正的条件。
In further details, this paper discussed the epidemic threshold for disease spreading using SIR model with piecewise linear infectivity on scale-free networks.
具体讨论了具有分片线性传染力的SIR模型在无标度网络上的流行病传播阈值，并运用分片线性传染力得到了传播阈值为正的条件。
应用推荐