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 20 of 38 for “"single-season"”.
-
A cross-scale model for the evolution of influenza within a single season
… model for the evolution of influenza within a single season. We model evolution as the emergence and spread of a mutant strain in a population that is already invaded by a parent resident strain. This allows us to investigate both the emergence dynamics of a mutant strain as well as the …
-
Determining habitat and biotic factors driving puma (<i>Puma concolor</i>) space use and underlying dynamic processes (colonization and extinction) over 20 years in protected and private areas throughout Belize, Central America
… lower trophic levels, and habitat. We used single-species, single-season and multi-season occupancy modeling to explore factors influencing distribution and persistence of pumas across the country of Belize. We used camera trapping data from 7 protected areas over 20 years with 2,198 camera …
-
What lies beneath--discovering the hidden story of plant roots: root growth strategies of wetland plants in northern Ontario along a gradient of growing season length.
Root growth strategy can be classified as multi-season (winter-surviving) or single-season (fallsenescing). This study investigated the relationship of wetland plant species with multi-season roots (sMSR) and species with single-season roots (sSSR) to soil temperature across a climatic growing …
-
The Effects of Youth Football on the Developing Brain: A Multi-Modal Neuroimaging Study
… can experience hundreds of head impacts during a single season without sustaining a mild traumatic brain injury (mTBI). There is a growing concern regarding the association between later-life neurodegenerative disease development and earlier life head injury. This association is linked to the …
-
Divergent Phenotypic Recurrent Selection for Nitrate Reductase Activity and Correlated Responses in Maize
… four composites from selection under comparable single season environments. Auxiliary studies determined: the relationship between seedling and post anthesis NRA of individual plants; the NRA and plant productivity of S1 progeny from high and low NRA plants; the effect of supplementary nitrogen …
-
Mathematical models for vector-borne disease: effects of periodic environmental variations.
… considering constant population sizes over the season, where contact between the host and the vector responsible of the transmission is assumed to occur only during the summer of each year. I discussed two different types of threshold for pathogen persistence that I explicitly computed: a …
-
Wild carnivore habitat use and community ecology in a biodiversity hotspot and human-wildlife conflict with pumas and dogs across Chile
… and even human public health. I also used single-species, single-season occupancy models fit to camera-trap data to investigate the patterns of site occupancy and response to mega-wildfires of native mesocarnivores in southern-central Chile: guignas (Leopardus guigna), culpeo foxes …
-
Modeling, Dynamics and Optimal Control of West Nile Virus with Seasonality
… of WNv in the mosquito-bird cycle in a single season and proved the existence of backward bifurcation in the model. In the second part, we consider another deterministic model to study the impact of seasonal variations of the mosquito population on the transmission dynamics of WNv. We …
-
Movement patterns and habitat use by Namib golden moles (Eremitalpa granti namibensis Bauer and Neithammer, 1959)
… their tracks over a full calendar year at a single site. My secondary aim was to compare mole movement patterns and habitat use at the main study site with two other nearby sites that differ in habitat. I hypothesised that movement and habitat use will be non-random and influenced by the …
-
Bat occupancy of forests and managed savanna and woodland in the Missouri Ozark Region
… May to July 2011, and May to June 2012. We fit single-season occupancy models for each species. We evaluated a priori hypotheses in an information theoretic approach by first evaluating factors affecting p and then evaluating support for site occupancy models that included habitat and landscape …
-
The Effects of Subconcussive Impacts on Postural Stability
… show declines in postural stability following a single fall season. We also hypothesized that there would be no significant differences between groups from pre- to post-season measures. The secondary purpose was to predict deficits in postural stability based on cumulative linear acceleration, …
-
The effect of repetitive head impact exposure on white matter lesion volume
… countless repetitive head impacts (RHI) across a single season, potentially leading to increased risk of long-term difficulties in cognition and the development of neurodegenerative disease. There is mixed literature on whether RHI from CCS result in changes to white matter and long-term …
-
A Chemical and Morphological Study of Grindelia Squarrosa (Pursh) Dunal
… in various parts of South Dakota. During day seasons it attains such a dense growth in closely cropped pastures that horses feeding in them have their heads and manes covered with a black tarry-like substance, and their fetlocks collects fairly large ball of this tarry mass. In dry years the …
-
Water quality and biotic community response to an urban – rural land-use gradient in the Lake Simcoe watershed
… issue in the LSW. The effects of land-use, season, and abiotic parameters on periphyton biomass, nutrient content, invertebrate abundance and biotic composition were investigated using artificial and natural substrates at 14 field sites that represent a gradient from reference to agriculture …
-
Efficient Bayesian analysis of spatial occupancy models
… in order to model posterior parameters of the single-season spatial occupancy model. We incorporate the widely used Intrinsic Conditional Autoregressive (ICAR) prior model to specify the spatial random effect in our sampler. We also develop OccuSpytial, a statistical package implementing our …
-
Accuracy of Concussion Reporting upon Completion of a Collegiate Athletic Career
… However, these studies tend to evaluate a single season of competition and many were amongst high school student-athletes. Objective: The purpose of this study was to explore the current reported, unreported, and potential unrecognized concussion rates among collegiate student-athletes who …
-
Fast and efficient approaches to large-scale occupancy models
… posterior distribution of the parameters of a single season site occupancy model that uses logistic or probit link functions to model the probability of species occurrence at sites and species detection probabilities. The results suggest that under certain circumstances, the variational …
-
Sequential methodology and applications in sports rating
… found to agree with these pundits, but in the seasons considered a small number of cases are highlighted where injustice to the team was evident. Also considered is the rating of professional basketball players. A new method is developed that measures a player's offensive and defensive ability …
-
Using Occupancy Models to Predict Grassland Bird Distributions in Southeastern Alberta
… to guiding long term management efforts. I used single-species, single-season occupancy models to (1) identify landscape factors influencing the distribution of grassland bird species, (2) generate predictions of species distributions in southeastern Alberta, and (3) evaluate the predictive …
-
An assessment of the suitability of the galjoen, Coracinus capensis cuvier, for mariculture in South Africa
… several months prior to and during the spawning season. Natural serial spawning with high fertilization occurs readily in captivity, with galjoen producing large numbers of good quality eggs during a single season. However induced spawning using two mammalian gonadotropins resulted in the …
Page 1 of 2