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 56 for “"Migration Rates"”.
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Heterogeneity in Climate-Related Migration
… change. Focusing on one form of adaptation, migration, I look at differences in migration rates between income groups and race in the United States. Lower income households are more impacted by changing temperatures in the origin compared to wealthier households. Results are less clear with …
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A multi-regional adaptation of the ASSA2008 AIDS and Demographic Model for population projections
… used in population projections rely on the net migration method.The ASSA2008 AIDS and Demographic model is one such model. In this research, the nine provinces and the four population groups are aggregated to give rise to three regions. Using STATA12, the directional migration tables for the …
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MINING SARS-COV-2 PHYLOGENETIC TREES TO ESTIMATE CIRCULATING INFECTIONS AND PATTERNS OF MIGRATION
… of the number of infections (I) and the rate of migration based on simple features of SARS-CoV-2 phylogenies. I simulated pathogen evolution using a susceptible-exposed-infectious-recovered (SEIR) model of pathogen spread, reconstructing evolution using CoVizu. For simulations of I, I varied the …
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Channel erosion projections for threatened Alaska-Native communities along the Kuskokwim River
… images were used to calculate riverbank migration rates near three villages of interest: Akiak, Kwethluk, and Napakiak. Annual channel boundaries from 1999 to 2016 were derived from the 30-meter resolution JRC Global Surface Water dataset. Boundaries from 2017 to the present were derived …
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Evolutionary Models of Migratory Systems. A Behavioural Approach with Application on Intraurban Mobility in Toronto CMA, 1966-1976
… and formal conceptualization, within any type of migration can be studied is proposed. This framework results from the merging of two different traditions of research. The first has its roots in statistical mechanics and is expressed by what is known as evolutionary models. In this respect we …
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Responding to Natural Hazards: The Effects of Disaster on Residential Location Decisions and Health Outcomes
… hazards on residential location choice, county migration rates, mental health status, and displacement. The results have practical implications for disaster risk management. Chapter 2 estimates household willingness-to-pay to live in lower hazard-risk areas. A model of residential location …
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Surface ordering of MBE grown 001 gallium(05) aluminum(05) arsenic: A theoretical study
… included in the model are adsorption and surface migration. The surface ordering kinetics is studied as function of fluxes, flux ratio and substrate temperature. The growth parameters employed for the monatomic spices As are: fluxes 2{dollar}\sp\circ{dollar} A/sec, for cations with the cation to …
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Epidemiological, Environmental, and Biological Risk Factors for Gastroschisis
… environmental factors; and 3) comparing cell migration rates from biological samples in gastroschisis versus control pregnancies. We found increased maternal age and parity over time in those carrying a baby affected by gastroschisis and observed clustering of cases in the Inland Empire …
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Analysis of Grass Carp Dynamics to Optimize Hydrilla Control in an Appalachian Reservoir
… 44% in 2011, and 25% in 2012. Grass carp growth rates were rapid in 2011, but declined in 2012 concurrent with significant reductions in hydrilla abundance. Based on grass carp population dynamics observed in Claytor Lake, our stocking model predicted that hydrilla could be controlled through …
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Role of Methyltransferase Like-3 (Mettl3) In Pancreatic Ductal Adenocarcinoma (Pdac) Progression
… METTL3 loss decreased proliferation and migration rates in MiaPaca-2 cells and decreased proliferation rate in Panc-1 cells when compared to control cell lines. As METTL3 is physiologically important in inducing differentiation and repressing pluripotent identity, we investigated the …
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Some effects of subdivision of finite populations on genetic diversity measures
… of subdivision should vanish if there are large rates of migration among the demes. An analytic proof of this result has recently been given by Nagylaki (1980). This result is confirmed and the effects of smaller migration rates are studied for certain population structures. Even when the …
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Population oscillations, synchronization, and range expansion in a bacterial cross-protection mutualism
… to a spatially structured environment where migration connects population patches. We find that intermediate migration rates maximize the probability of survival in harsh environments, whereas high migration rates lead to synchronization and thus risk simultaneous extinction. Interestingly, …
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Determining the impacts of selected energy policies on Gauteng's residential energy consumption and the associated emissions using LEAP as a tool for analysis : implications for sustainable livelihoods for the poor
… a slowing rate of electrification due to high in-migration rates and high pollution levels in households that use coal to meet their energy needs. This study analyses whether the energy policies in Gauteng can help to steer Gauteng‘s residential sector toward sustainable use of energy by reducing …
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Three essays in regional economics: migration, regional portfolio theory, resilience, and agglomeration economies
… these characteristics and patterns of migration is a substantial focus in the field of regional economics. Researchers attempt to enhance our understanding by examining this phenomenon through a number of different lenses. Some have examined flows to the largest cities in the country …
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Field observations and numerical model simulations of a migrating inlet system
… between storm waves, which enhance inlet migration, and strong tidal currents, which scour the inlet and reduce migration rates. The combined field observations and simulations examined here demonstrate the importance of wave and tidal current forcings on morphological evolution at …
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Field observations and numerical model simulations of a migrating inlet system
… between storm waves, which enhance inlet migration, and strong tidal currents, which scour the inlet and reduce migration rates. The combined field observations and simulations examined here demonstrate the importance of wave and tidal current forcings on morphological evolution at …
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Probabilistic Models for Human Migration Forecasting and Residency Imputation
… enhance the estimation and forecasting of human migration flows and residency. Using a Bayesian hierarchical approach, I first propose a model for forecasting global bilateral migration flows among the 200 most populous countries, producing well-calibrated projections that reduce error rates …
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Migration and Residential Mobility Into Impoverished Rural Illinois Communities
… which poor rural communities experience high rates of in-migration. Utilizing both a statewide regression analysis of migration rates in rural block groups and case studies of rural Illinois communities, it explores the causal mechanisms that initiate and maintain high rates of migration and …
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River channel dynamics mapped with dense lidar point cloud time series
… and ubiquity of the patterns created by meander migration—as well as the consequences of rapid channel movement for river-adjacent communities—have led to a deep history of their study from both geologic and water engineering-driven perspectives. Observations and theory argue that many physical …
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Meander migration with physically-based bank erosion
… associated with the process of meander migration -- hydrodynamics, sediment transport, bed morphodynamics, and bank erosion -- the latter still needs a considerable amount of research, especially with regards to how the different processes responsible for bank erosion and retreat impact …
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