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 20 for “"Maximum entropy (Maxent)"”.
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Loanwords and the perceptual map : a perspective from MaxEnt Learning
… phonology. These models, formulated within a Maximum Entropy (MaxEnt) framework, have been shown to be successful when simulating the effects that a substantive bias such as the Perceptual Map (PMap) hypothesis of Steriade (2001) may have on a phonological learner. While previous studies have …
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A Comparison of Presence Only Suitability Models to Accurately Identify Prehistoric Agricultural Fields in Western New Mexico Through Remote Sensing
… sample. Three models: Mahalanobis Technicality, Maximum Entropy (Maxent), and Multi-Criteria Evaluation Ordered Weighted Average (MCE OWA) were used and the suitability raster results were compared. Area Under the Curve (AUC) values were calculated and used to validate model results. Although …
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Modeling the Future Distribution of Rubus chamaemorus (cloudberry) in Alaska
… could be vulnerable to climate change impacts, Maximum Entropy (MaxEnt) niche modeling was used to understand historical and projected future distributions of cloudberry habitat suitability in five distinct regions of Alaska: Interior, North Slope, Southcentral, West Coast, and Southeast. …
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AI-Driven Suitability Modeling for Sustainable Olive Cultivation: An Environmental Assessment in a Changing Climate
… integrates ecological niche modeling (ENM), maximum entropy (MaxEnt), and geographic information systems (GIS) to capture complex, nonlinear interactions among bioclimatic, topographic, and soil variables. By employing AI and machine learning to enhance ecological modeling, this research …
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Exploring Fisheries Species Distribution Shifts in Response to Freshwater Inflow Through the Bonnet Carré Spillway Using Species Distribution Models
… fisheries species. Here, a series of seasonal Maximum Entropy (MaxEnt) species distribution models are constructed, validated, and performance-assessed to explore how BCS openings might affect <em>Brevoortia patronus</em>, <em>Cynoscion nebulosus</em>, and <em>Farfantepenaeus aztecus</em> in …
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The application of Bayesian statistics and maximum entropy to Ion beam analysis techniques
… formalism, together with the concepts of maximum information entropy and multiresolution pixons, to various inverse problems in ion beam analysis; The results of this method of deconvoluting Rutherford Backscattering Spectrometry (RBS) and Proton Induced X-ray Emission (PIXE) spectra are …
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Potential environmental factors associated with the newly emerging bat white-nose syndrome in the northeastern United States: an exploratory modeling approach and case-control study
… a new machine-learning modeling technique, Maxent modeling, along with a case-control study to assess the hypothesis that certain environmental variables may be associated with the occurrence and distribution of bat WNS. Maxent data uses presence-only data and bases its algorithms on the …
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Predictive Analysis of Arizona Dust Storms (1996–2023): GIS, Artificial Intelligence (MaxEnt), and Spatiotemporal Data
<p>This dissertation looks at how well Maximum Entropy (MaxEnt) model can predict duststorms in Arizona, United States. MaxEnt is a machine learning tool that was first developed to predict where different species might live. MaxEnt uses presence-only data which makes it especially useful in …
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Facilitating golden mole conservation in South African highland grasslands : a predictive modelling approach
… distribution models were calibrated in maximum entropy (MaxEnt) software to focus ground-truthing efforts.
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Lyme Disease and Forest Fragmentation in the Peridomestic Environment
… so using both Boosted Regression Trees (BRT) and Maximum Entropy (MaxEnt) modeling, the two most common niche modeling algorithms in the field today. We found that Lyme is strongly associated with higher density of developed-herbaceous edges within 100-meters from the home. Forest patch density …
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Spatial ecology informs reintroduction tactics for warabin (Burhinus grallarius;bush stone-curlew)
… home-ranges, dispersal, and to develop a maximum entropy (maxent) species distribution model of warabin habitat use. Warabin habitats were partitioned into roosting habitat, characterised by cover (30-40% overstory, >5% understory and hill slopes), and foraging habitat, characterised by …
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Spatial ecology informs reintroduction tactics for warabin (Burhinus grallarius;bush stone-curlew)
… home-ranges, dispersal, and to develop a maximum entropy (maxent) species distribution model of warabin habitat use. Warabin habitats were partitioned into roosting habitat, characterised by cover (30-40% overstory, >5% understory and hill slopes), and foraging habitat, characterised by …
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Nestbox use and predicted distribution of the southern greater glider (Petauroides volans) following the Black Summer megafires.
… years following the 2019/2020 megafires. Using a Maximum entropy (Maxent) species distribution model, I found that the predicted southern greater glider distribution remained stable throughout this period; however, there was a clear decline in marginal (moderately suitable) southern greater glider …
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Nestbox use and predicted distribution of the southern greater glider (Petauroides volans) following the Black Summer megafires.
… years following the 2019/2020 megafires. Using a Maximum entropy (Maxent) species distribution model, I found that the predicted southern greater glider distribution remained stable throughout this period; however, there was a clear decline in marginal (moderately suitable) southern greater glider …
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INVASION DYNAMICS OF FRESHWATER CRAYFISH IN A MAN-DOMINATED LAND: SPATIO-TEMPORAL, ECOLOGICAL AND HUMAN DIMENSIONS
… scientific and grey literature. Moreover, using Maximum Entropy (MaxEnt) modelling, high-suitability areas were identified, while both linear regression and Bayesian diffusion–growth models quantified Procambarus clarkii expansion rates and revealed environmental drivers of dispersal and local …
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Using Maximum Entropy to Model the Distribution of an Endangered, Endemic Crayfish Cambarus Harti (Hobbs)
… populations. One species distribution model, Maximum Entropy (MaxEnt), is the preferred approach when modeling species, like <em>C. harti</em>, that only have a few known locations. I used MaxEnt to create a predictive, spatial model for <em>C. harti</em>. The MaxEnt model was developed using …
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DNA-based Population Estimation, Harvest Vulnerability, and Home Range Dynamics of Black Bears in Western Maryland
… samples more efficiently. We used presence-only maximum entropy (Maxent) modeling to classify the study area based on predicted probability of bear occurrence, and allocated the majority of our hair snares to areas with high or medium probabilities. Using microsatellite analysis and …
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Observation and simulation of mid-latitude ice clouds
… are widely used to derive PSDs in term of their maximum particle dimension (Dmax). In the second chapter, different definitions of Dmax for non-spherical particles recorded by 2D probes are compared. It is shown that derived PSDs can differ by up to a factor of 6 for Dmax < 200 μm or Dmax > 2 mm. …
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Temporal, Spatial, and Environmental Influences on the Demographics and Harvest Vulnerability of American Black Bears (Ursus americanus ) in Urban Habitats in New Jersey, Pennsylvania and West Virginia
… I measured harvest vulnerability by generating maximum entropy (Maxent) models of bear occurrence during the prehunting period and hunting season for each study area. I used Maxent to generate models of bear occurrence. In all but one study area, black bear occurrence was 5-75% less in the …
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The Spatial and Molecular Epidemiology of Lyme Disease in Eastern Ontario
… main vector for Lyme disease in Canada. Using maximum entropy species distribution modelling to correlate blacklegged tick occurrence data with environmental variables, predictive risk models for I. scapularis and the Lyme disease pathogen, Borrelia burgdorferi, were developed. The model …