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 22 for “"Contact Networks"”.
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Algebraic minimization and the design of two-terminal contact networks
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1956.
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Modeling, Analysis and Comparison of Large Scale Social Contact Networks on Epidemic Studies
Social contact networks represent proximity relationships between individual agents. Such networks are useful in diverse applications, including epidemiology, wireless networking and urban resilience. The vertices of a social contact network represent individual agents (e.g. people). Time varying …
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Pinning control of disease networks
The modelling of contagion spread on contact networks provide valuable insights to epidemiologists and policymakers trying to control and eradicate diseases. This thesis proposes, implements and analyses a methodology for inserting disease contact networks of HIV into feedback control loops and …
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Agent-based and contact network modeling applications for Escherichia coli transmission in commercial feedlot settings
… of STEC in commercial feedlot settings. The contact networks of feedlot cattle both within and between pens were characterized and an agent-based model was created to examine the influence of direct and indirect transmission routes on the pen-level prevalence of E. coli colonization. …
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Microsimulation analysis of informal labour markets in developing countries
… informal workers face to becoming formal? Job contact networks and workers’ social insurance contributions are analysed alongside other usual suspects such as the lack of human capital. The first chapter proposes a tax-benefit microsimulation exercise for Ecuador and Colombia in which we move …
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Analysis and operations in complex networked systems: From urban infrastructure to epidemics
… 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: i) infrastructure cascading failures in urban interdependent infrastructure networks, and ii) …
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Scaling Up Network Analysis and Mining: Statistical Sampling, Estimation, and Pattern Discovery
… and financial domains. Across all these domains, networks arise as a natural and rich representation for data. Studying these real-world networks is crucial for solving numerous problems that lead to high-impact applications. For example, identifying the behavior and interests of users in online …
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Epidemic Simulation and Mitigation via Evolutionary Computation
… a generative representation to create personal contact networks, representing the social connections within a population, known as the Local THADS-N generative representation is introduced and expanded upon. This representation uses an evolutionary algorithm and is modified to include new local …
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Emerging Variants and Fading Immunity: Analyzing the Impact in Epidemic Modeling
… considering diverse population structures in the contact network where different age groups have different levels of immunity strength. An evolutionary algorithm was used to generate and evolve personal contact networks. We analyzed the epidemic dynamics within these networks, focusing on how …
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Making diffusion work for you: Classification sans text, finding culprits and filling missing values
… have two things in common: a network (social networks or human contact networks) and a virus (meme, keyword or the flu virus) diffusing over the network. We can think of interactions like memes, hashtags, influenza infections, computer viruses etc., as viruses spreading in a network. This …
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A study of factors that impact on executive network marketing in financial institutions in LDCs. An examination of factors that impact on executive network marketing in the finacial services sector in less developed countries: The case of Ghana.
… firm characteristics, Executives’ personal contact groups, Executives’ business contact groups and issues of commitment and trust in exchange relationships. Multiple factor analysis established the regression model as significant in establishing a formal relationship between the dependent …
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Graph-Based Computational Approaches for Modeling Viral Evolution
… model that couples epidemiological spread on contact networks with evolutionary dynamics on fitness landscapes, demonstrating how mutation, selection, and network structure jointly shape adaptive trajectories. Second, the Variant Evolution Graph (VEG) provides a scalable graph-based …
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Evolving Weighted Networks to Simulate Epidemics and Lockdowns
… algorithm is used to evolve weighted personal contact networks that represent physical contact between individuals, and thus possible paths of infection during an epidemic. The evolutionary algorithm evolves a list of edge-editing operations applied to an initial graph. Two initial graphs are …
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A Semantic Web-Based Digital Library Infrastructure to Facilitate Computational Epidemiology
… explicit synthetic populations, labeled social contact networks, multi-cell statistical experiments, and output data generated from the execution of computer simulation experiments. The discipline of computational epidemiology encounters numerous challenges because of the size, volume, and …
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Task-specific summarization of networks: Optimization and Learning
Networks (also known as graphs) are everywhere. People-contact networks, social networks, email communication networks, internet networks (among others) are examples of graphs in our daily life. The increasing size of these networks makes it harder to understand them. Instead, summarizing these …
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Spatial spread of farm animal diseases
… to include all cattle by the beginning of 2001. Contact networks have proved valuable in studying the epidemiology of diseases in man, such as human immunodeficiency virus; the availability of CTS cattle movement data has enabled contact network analysis to be applied to diseases of farm …
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Experimentally validated DEM modelling of granular materials under simple shear testing
… provides complementary information such as contact networks and particle movements, that is underlying, but not observed directly from the experiments. In this study, a number of uni-directional and bi-directional experimental and DEM simple shear tests were conducted to provide a database …
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Development of Person-Person Network and Interacting PTTS in EpiSimdemics
… behavior during disease epidemic [1][2]. Social contact networks and epidemics co-evolve [1][2]. The spread of a disease influences people's behavior which in turn changes their social contact network, thereby altering the disease spread itself. As a result, there is a need for modeling the …
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Weighted Graph Compression using Genetic Algorithms
Networks are a great way to present information. It is easy to see how different objects interact with one another, and the nature of their interaction. However, living in the technological era has led to a massive surge in data. Consequently, it is very common for networks/graphs to be large. When …
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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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