Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 299 for “"epidemics"”.
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Epidemics on Evolving Graphs
<p>The evoSIR model is a modification of the usual SIR process on a graph $G$ in which $S$-$I$ connections are broken at rate $\rho$ and the $S$ connects to a randomly chosen vertex. The evoSI model is the same as evoSI but recovery is impossible. In \cite{DOMath} the critical value for evoSIR was …
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Mathematical models of daphnia epidemics
… the many aspects that play a role in Daphnia epidemics. We begin with simple models and build models with higher complexity by adding more realistic biological assumptions. From ordinary and partial differential equation models to stochastic models, through the chapters of this thesis, we …
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On a Stochastic Model of Epidemics
<p>This thesis examines a stochastic model of epidemics initially proposed and studied by Norman T.J. Bailey [1]. We discuss some issues with Bailey's stochastic model and argue that it may not be a viable theoretical platform for a more general epidemic model. A possible alternative approach to …
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Stochastic models for epidemics on networks
In this thesis, I looked at an extension of the Reed-Frost epidemic model which had two-sub-populations. By setting up a Markov chain to model the epidemic and finding the transition probabilities of that chain, MATLAB could be used to solve for the expected number of susceptibles and the expected …
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Novel Epidemics: Contagion and Metaphor in US Literature
… to the social body. In the twentieth century, epidemics and epidemiological reading came to dominate not only the fields of science, but also literary and cultural production and its critical lenses. “Novel Epidemics” examines how American novelists William Faulkner, Ishmael Reed, and Helena …
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Evolving Weighted Networks to Simulate Epidemics and Lockdowns
Simulating epidemics is vital to understanding their effect on human populations, and developing models to provide insights into epidemic behaviour is a primary goal of this thesis. A generative evolutionary algorithm is used to evolve weighted personal contact networks that represent physical …
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Probabilistic Population Projection for Countries with Generalized HIV/AIDS Epidemics
… For countries with generalized HIV/AIDS epidemics, the mortality pattern is different for young and middle-aged adults, and therefore the effect of AIDS should be considered in estimation and projections. In this thesis, we incorporate HIV impact, including HIV prevalence and …
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Childhood epidemics and the demographic landscape of the Aland Archipelago
… or even months. Higher mortality during measles epidemics has typically been associated with completely susceptible populations; however, in Aland, Finland--a population that experienced regular epidemics of both childhood diseases--mortality from all causes during the 1820-21 measles epidemic …
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Mathematical Modeling, Simulation, and Time Series Analysis of Seasonal Epidemics.
<p>Seasonal and non-seasonal Susceptible-Exposed-Infective-Recovered-Susceptible (SEIRS) models are formulated and analyzed. It is proved that the disease-free steady state of the non-seasonal model is locally asymptotically stable if <em><b>R</b><sub>v</sub></em> < 1, and disease invades if …
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Containing Cascading Failures in Networks: Applications to Epidemics and Cybersecurity
Many real word networks exhibit cascading phenomena, e.g., disease outbreaks in social contact networks, malware propagation in computer networks, failures in cyber-physical systems such as power grids. As they grow in size and complexity, their security becomes increasingly important. In this …
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Data Integration Methodologies and Services for Evaluation and Forecasting of Epidemics
… for evaluation and forecasting of various epidemics in different regions of the world. The environment supports analysis of epidemics based on any combination of disease, surveillance sources, epidemiological models, geographic regions and demographic factors. The environment also supports …
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An Agent-Based Model to Study the Spread and Control of Epidemics
… model is used to study the spread and control of epidemics and is based on Sirakoulis, et al. [1]. The computer program NetLogo [2] is used for simulation. The development and set-up procedures for this model are fully discussed. The model is used to study the effectiveness of vaccination and …
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Modelling Infectiology and Optimal Control of Dengue Fever Disease Epidemics in Tanzania
… and optimal control of dengue fever disease epidemics in Tanzania is formulated and analysed. The model describes the interaction between human and dengue fever mosquito populations with treatment. Susceptible human population is divided into two, namely, careful and careless susceptible. The …
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Analysis and operations in complex networked systems: From urban infrastructure to epidemics
Many real-world systems run with underlying complex networked structures, and system disruptions or signals of many sorts are transmitted along these networks. This dissertation aims at investigating the dynamics and operations in different types of complex networked systems, with two main focuses: …
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Modeling of HIV, SIR and SIS epidemics on time scales and oscillation theory
<p>"We study higher dimensional systems of first order dynamic equations on time scales together with their applications. In particular, we focus on epidemic models such as HIV (Human Immunodeficiency Virus), SIS (Susceptible-Infected-Susceptible) and SIR (Susceptible-Infected-Recovered).</p> …
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Vectors of Health: Epidemics, Ecologies, and the Reinvention of Mosquito Science in Brazil
The Aedes aegypti mosquito can be a disease vector, transmitting pathogenic viruses that are harmful to human health, such as Zika, dengue, chikungunya, and yellow fever. Since the early 20th century, this insect has been the focus of scientific research and public health campaigns, framed as a …
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The changing <em>Phytophthora infestans</em> population: implications for late blight epidemics and control
<p><em>Phytophthora infestans</em>, the causal agent of potato late blight, causes millions of pounds of losses worldwide each year. Within the UK P. <em>infestans </em>populations there has been a dramatic increase in the proportion of the A2 mating type due to genotype 13_A2 and concerns have …
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The Ethical Balance Between Individual and Population Health Interests To Effectively Manage Pandemics and Epidemics
… hamper the effective management of pandemics and epidemics. The libertarian model focuses on advancing individual rights. The epidemiological model focuses upon population health. The social justice model focuses on a broader perspective than individual rights and population health to include …
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