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.
Results
Showing 1 to 14 of 14 for “"demographic model"”.
-
Education and labor supply: An extended demographic model of the Chicago region
This thesis develops an extended demographic model of the Chicago region which projects the educational attributes of the population. The region is further subdivided into two zones, city and suburb, and two racial/ethnic groups are identified and disaggregated according to gender. Central to the …
-
A multi-regional adaptation of the ASSA2008 AIDS and Demographic Model for population projections
The traditional models 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 …
-
Predictors of women's workplace conflict management styles
… amount of explained variance of the above socio-demographic model. A questionnaire composed of self-report responses on conflict management styles, feminist attitudes, and social demographics was administered to a sample consisting of three hundred and thirty-one women who represent a variety of …
-
Effects of fire frequency and seasonality on the population dynamics of the critically endangered Clanwilliam cedar
… count numbers I used a negative binomial hurdle model using seasonal fire indices and environmental data. To examine the impact of fire frequency and seasonality on the life-history of the Clanwilliam cedar, I used a stochastic demographic model based on parameter values obtained from the …
-
Immigrants in Leeds: An investigation into their socio-econmic characteristics, spatial distriburion, fertility trends and population growth
… spatial distribution, fertility and demographic development of immigrant populations in Leeds C. B. The immigrant populations: derive from the New Commonwealth, Northern Ireland, Eire and other areas of the world and the developments in these aspects of their existence in Leeds is …
-
Detecting cognitive impairment from spoken language
… of cognitive conditions (3-4%). We first explore modeling cognitive impairment from a relatively small set of 92 subjects with complete information on audio, transcripts, and speaker turns. We loosen these constraints by modeling with only a fraction of audio (~2-3 minutes), of which the speaker …
-
The Influence of Fluvial Geomorphic Processes on Spatial Patterns of Forest Primary Succession
… bends in the reach. I developed a multi-species demographic model to test the predictability of demographic processes during succession. Patterns of establishment along the point bar, as well as community changes with time, have been fairly consistent during the past 60 years of succession, …
-
Human population history and its interplay with natural selection
The complex demographic changes that underlie the expansion of anatomically modern humans out of Africa have important consequences on the dynamics of natural selection and our ability to detect it. In this thesis, I aimed to refine our knowledge on human population history using ancient genomes, …
-
Spatial dynamics modeling for data-poor species using examples of longline seabird bycatch and endangered white abalone
… to incorporate spatial patterns and to improve model performance. The model modified with spatial filters showed superior performance over other candidate models. I also applied the geographically weighted approach to explore spatial nonstationarity in seabird bycatch, i.e., spatial variation in …
-
On the use of demographic models to inform amphibian conservation and management: A case study of the reticulated flatwoods salamander
… populations of A. bishopi to construct a demographic model that can be used to evaluate future extinction risk. In chapter one, we quantify population sizes through time, and estimate the impact of annual variability in numbers on genetic viability. This species exists in small (< 500) …
-
Reconstructing Population Histories in Relation to Ecology
… I first used skyline plots to infer historical demographic trends from genetic data of a well-studied system, humans. Using this gold standard, my work revealed detailed demographic profiles, but also identified issues relating to the way key methodological assumptions are contravened. In …
-
Comparative Population Genomics and Speciation of Snakes Across the North American Deserts
… used coalescent population genetic techniques to model historical demographic patterns across these thirteen species groups for 5,496 – 21,259 unlinked single nucleotide polymorphisms (SNPs), assessing congruence in spatial genetic structure, timing of divergence, and the mode of speciation across …
-
Modelling the South African tuberculosis epidemic: the effect of HIV, sex differences, and the impact of interventions
… TB dynamics, using a mathematical model. The first objective is to quantify TB incidence and mortality due to HIV and assess the impact of interventions mentioned above on TB incidence and mortality between 1990 and 2019. The second objective is to explore the extent to which the …
-
Modeling insect resistance to transgenic corn and cowpea
… is considered as a common good. Simulation models have helped guide the USEPA’s regulatory decisions on the IRM requirements of both Bt cotton and Bt corn plant-incorporated protectants (PIPs) since the late 1990s. For my dissertation research, I built four species-specific, simulation …