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 32 for “"selection function"”.
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Investigating the AMI SZ Selection Function of Galaxy Clusters
This thesis is focused on investigating the Selection Function (SF) of the Arcminute Microkelvin Imager (AMI), a dual-array interferometer at Lord’s Bridge, located 8 kilometers away from central Cambridge. AMI observes and studies the Sunyaev- Zel’dovich (SZ) effect of galaxy clusters by using the …
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Searching for Distant Galaxy Clusters : Optical Observations, Cluster Search Algorithms and the Cluster Selection Function
… For the determination of the cluster selection function in HIROCS and COMBO-17 procedures to simulate galaxy clusters were introduced. Due to the lack of fully reduced HIROCS data, the COMBO-17 selection function was quantified; rich clusters are expected to be found in the redshift …
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Simulations for the International X-ray Observatory
… by a source identification method. The IXO selection function is mapped over a varying surface brightness parameter space. Simulated IXO surveys are used to explore the biases present in X-ray cluster surveys. These reveal that it is necessary to correct for biases using a detailed and …
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An analysis and implementation of linear derivation strategies
… employed in each derivation strategy. The selection function, restrictive ancestor resolution, compulsory ancestor resolution on literals having atoms which are or become identical, compulsory merging operations, reuse of truncated literals, spreading of FALSE literals, no-tautologies …
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Habitat linkages and highway mitigation using spatially-explicit GIS-based models
… high-quality habitat patches using a resource selection function (RSF) based on 1,703 radio telemetry locations from 59 grizzly bears. Least-cost path analysis (LCP) among habitat patches identified 6 linkage zones across the TCH. Electric circuit theory was used to generate current maps that …
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A Descriptive Study of the Selection Procedures Used by Kentucky Manufacturers
… this study was to investigate and describe the selection practices used by manufacturing companies in Kentucky and whether the size of the organization and the number of employees hired in 1999 affected the use of valid selection procedures and compliance with EEO Guidelines. Surveys (300) were …
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The Chemical and Dynamical Evolution of Simulated Late-Type Galaxies
… out an observationally-motivated spatial selection within the simulation and thus comparing like for like, we take into account observational uncertainty and the selection effects (photometric, effective temperature and surface gravity). Incorporating these factors within the simulation …
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Mule Deer Responses to a Pinyon-Juniper Removal
… of central Nevada to assess changes in resource selection and diet diversity of mule deer following the treatment. The pinyon-juniper removal treatment was conducted in autumn of 2018. We captured 36 adult female mule deer in winter of 2018 and 2019, deploying GPS collars and collecting fecal …
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Guidelines for outdoors WiFi space design
… range can be efficiently supported in site selection, function design, circulation design, vegetation design and detailed design. Following the guidelines developed in the first part, four programmatic designs were developed for four hypothetical sites at different scales. These scenarios …
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Selection of Spawning Habitats by Horseshoe Crabs (Limulus polyphemus) along the Complex Connecticut Coast
… habitat characteristics to develop a resource selection function from a candidate model set based on polytomous logistic regression. An information-theoretic approach was followed to select a best approximating model that included slope, wave exposure, and distance (Akaike weight = 0.967). The …
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How to Accurately Map the Milky Way with a Billion Sources: A Journey into the Gaia-verse
… unbiased distance estimators and survey selection functions. Without either, models are susceptible to significant systematic uncertainties. My case study of the tilt of the local velocity ellipsoid demonstrates this. Well-constructed distances for the Gaia DR2 RVS sample return a …
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Genetic variability, demography, and habitat selection in a reintroduced elk (Cervus elaphus) population
… demographic vital rates, and resource selection is important for conservation and management of wildlife populations. I examined factors influencing microsatellite variability, demographic vital rates, and habitat use for a reintroduced elk (Cervus elaphus) population at Fort Riley, …
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Bison Conservation in the Northern Great Plains
… observations, movement analyses, and Resource Selection Function (RSF) analyses too quantify similarities and differences between the bison and cattle in the Northern Great Plains. We observed a higher proportion of time spent grazing by cattle (45-49%) than bison (26-28%) and a greater amount …
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Distributed Cognitive RAT Selection in 5G Heterogeneous Networks: A Machine Learning Approach
… poses serious challenges to the current cell selection mechanisms used in cellular networks. The max-SINR algorithm, although effective historically for performing the most essential networking function of wireless networks, is inefficient at best and obsolete at worst in 5G HetNets. The …
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Puma Dispersal Ecology in the Central Rocky Mountains
… dispersers from all three study areas. Model selection, using Akaike’s Information Criterion, found landscape characteristics associated with successful hunting of ungulate prey combined with anthropogenic disturbance parsimoniously explained locations of GPS-marked individuals. For …
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Bison Conservation in the Northern Great Plains
… observations, movement analyses, and Resource Selection Function (RSF) analyses too quantify similarities and differences between the bison and cattle in the Northern Great Plains. We observed a higher proportion of time spent grazing by cattle (45-49%) than bison (26-28%) and a greater amount …
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Puma Dispersal Ecology in the Central Rocky Mountains
… dispersers from all three study areas. Model selection, using Akaike’s Information Criterion, found landscape characteristics associated with successful hunting of ungulate prey combined with anthropogenic disturbance parsimoniously explained locations of GPS-marked individuals. For …
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Advanced modelling of adaptive bitrate selection
… managed by a sub-module of the adaptive bitrate selection function. However, these sub-components interact in a non-trivial manner. For example, while on-off chunk scheduling helps to prevent buffer overflow, it negatively affects the TCP throughput. Hence, these complex interactions between …
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Demographics of supermassive black holes
… traditionally represented by the AGN luminosity function, the distribution function of AGN at a given luminosity. I determined the local (z<0.3) optical luminosity function of so-called type 1 AGN, based on the broad band B_J magnitudes and AGN broad Halpha emission line luminosities, free of …
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Moose and deer resource selection and co-occurrence in northeast Minnesota
A parasite, Parelaphostrongylus tenuis, carried by white-tailed deer (Odocoileus virginianus) has often been cited as a significant factor contributing to moose (Alces alces) population declines. Moose suffer from neurologic disease and usually die when infected with P. tenuis. The strength of the …
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