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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 33 for “"Selection models"”.
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Bayesian Hierarchical Methods and the Use of Ecological Thresholds and Changepoints for Habitat Selection Models
… of current standard habitat preference models that are based on Bayesian methods and then present some extensions and supplements to those methods that prove to be very useful. More specifically, we demonstrate the value of extending the standard Bayesian hierarchical model using finite …
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Impact of advanced placement student selection models on academic achievement and stakeholder perceptions of program effectiveness
… between the use of open and closed student selection systems for the enrollment of students in Advanced Placement (AP) educational services at the high school level and student academic achievement. The quantitative portion of this study examined the relationship between the use of a …
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A comparative study of the effectiveness of two Bayesian models for predicting the academic successes of selected allied health students enrolled in the comprehensive community college
… admission requirements in the guidance and selection of certain allied health curricula such as Dental Assistant, Mental Health, Nursing, and Radiology. In this guidance-selection environment in which there were more candidates than vacancies, methods and/or procedures must be established …
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Portfolio constuction using robust weight functions
The Markowitz portfolio selection model has formed the foundation from which all the other portfolio selection models are formulated. The Sharpe Single Index and the Improved Sharpe Single Index models have been formulated in a bid to form better performing models. In the optimization algorithms, …
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Three Essays on Extremal Quantiles
… achieve identification at infinity of the sample selection models and propose</p><p>a new inference method. Last, in Chapter 4, I use the concept of extremal quantile</p><p>index to define an asymptotic trimming scheme which can be used to control the</p><p>convergence rate of the estimator of the …
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Targeting of Ecosystem Goods and Services:Directing Agri-Environmental Policy Innovation
… by purchasing or leasing land. The GIS land selection models developed for this research assessed the net benefits for wildlife based on the opportunity cost of idling land from agricultural production. As indicated by the results, policy delivery using targeting mechanisms selectively …
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R & D project selection and scheduling
Research and Development (R&D) project selection has been the focus of much research attention and the literature on this subject is extensive. Numerous models have been proposed to facilitate the selection of R&D projects, and these models have been both qualitative and quantitative in nature. …
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Optimal and sequential design for bridge regression with application in organic chemistry
… bridge regression is used to select linear models which are then compared to models selected by more commonly used methods of variable selection, such as subset selection and stepwise selection. Models including two-way product, or interaction, terms are also considered. A general method is …
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An investigation of project selection in the renewable energy sector of Zambia
Project selection and the development of its portfolio in line with corporate strategy is an important task of decision makers in the renewable energy sector of both public and private sector organizations. The selected projects have to meet appropriate time frame for completion and delivery, a …
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Characterization of Stresses and Strains Involved in the Martensitic Phase Transformations
… strain properties are inadequate for variant selection models. EBSD, HRDIC and neutron diffraction measurements at ambient temperature confirm that the transformation is preceded by plastic deformation of the austenite crystal lattice and subsequent formation of nucleation sites. Here, it was …
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US store detectives: the relationship between individual characteristics and job performance
… actual job performance, making pre-employment selection a critical part of process improvement. However, relatively little attention has been devoted to the selection of in-store detectives in the literature. Qualitative research was used to identify critical job tasks in order to develop and …
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Spatial ecology of Western Ratsnakes (Pantherophis obsoletus) : implications for bird nest predation
… to evaluate their activity patterns and resource selection in study sites where they have been identified as the predominant bird nest predator. First, we used local weather data to model seasonal ratsnake movements as they relate to bird nesting phenology and climate change. Next, we used …
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Can a habitat selection model predict the distribution of moose Alces alces over multiple years?
… distribution is closely linked to habitat selection. Even so, few studies have investigated whether habitat selection models can predict distribution. This study investigates whether the winter distribution of a heavily managed ungulate species is predictable using models based on habitat …
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Basis Risk in Variable Annuities
… instrument sets and assess different variable selection models. The LASSO regression is shown to be most effective at identifying the most suitable (combination of) mapping instruments that minimize basis risk, compared to other test-based and screening-based models. I supplement it with the …
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Investigations of the Trophic Relationships, Feeding Ecology and Feeding Behavior of Larval Spot, <i>Leiostomus Xanthurus</i> Lacepede, and Atlantic Croaker, <i>Micropogonias Undulatus</i> (Linnaeus) (Pisces:Sciaenidae)
… In contradistinction, the degree of food selection increased with age in both species. Larvae added larger prey to their diets while continuing to feed on smaller prey, food selection was temporally variable and larvae always fed selectively amongst the available prey. Prey size and shape …
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Species Composition and Spatial Ecology of Amazonian Understory Mixed-Species Flocks in a Fragmented Landscape
… strongly to vegetation height. Using step-selection models, it was possible to reproduce flock movements and show that they prefer taller vegetation and lower areas of topography such as stream valleys. Due to this behavior, flocks avoided areas where canopy height was below 15 meters, and …
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Factors affecting piping plover (Charadrius melodus) nest site selection following landscape and predator community changes
… in vegetation succession, plover nesting habitat selection, and suitable nesting habitat availability from 2010 until eight years after Hurricane Sandy. We analyzed classified imagery to quantify vegetative cover changes across the landscape and at nest sites. Results showed an increase of 11.5% …
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A behavioral evaluation of command-selection aids for inexperienced computer users/
… the feasibility of providing online command-selection aids to novice users of an information retrieval system. The results of the first experiment revealed a difference in the mean and variability of search performance between novice and expert computer users. Half of the novices were …
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Diseño de una metodología para determinar la localización de infraestructuras portuarias : un caso de evaluación de la localización de una plataforma logística en la VIII región de Chile
… distribution is explained by means of existent models of ports and the processes that generated this situation, be good or bad, qualification that will be commented in conclusions of this work. The possibilities of the Chileans are also analyzed as for carrying out to improve in some relative …
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Development of a solid state IR analyser system using chemometrics
… for mixtures of CH4, CO, CO2 and N20. A variable selection algorithm based on multivariate linear regression (VS-MLR) was applied to the spectra to reduce the number of measurements required down to five. It was found that it was possible to build prediction models using low resolution and that …
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