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 170 for “"Field Surveys"”.
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Discovering and characterising compact mergers in wide-field surveys
… mergers involving neutron stars using wide-field survey instruments. With the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) and the Asteroid Terrestrial-impact Last Alert System (ATLAS), searches for compact mergers, including kilonovae, have been performed. The …
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Automating Searches for Gravitationally Lensed AGN in Wide-Field Surveys
… combined with a wealth of data from new wide-field surveys, will enable us to dramatically increase the lensed quasar population. In this thesis we develop a number of searches leveraging classic colour selection as well as supervised machine learning techniques. We target quadruply imaged and …
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Bright Z ~ 3 Lyman Break Galaxies in Deep Wide Field Surveys
… luminous z ~ 3 Lyman break galaxies in deep wide field surveys. In the first part of the thesis, I use the LBT/LUCIFER to observe a lensed high-redshift star-forming galaxy (J0900+2234) at z = 2.03. With the high S/N near-IR spectroscopic observations, I reveal the detailed physical properties of …
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Discovery and Characterisation of Gravitationally Lensed Quasars in Wide-field Surveys
… quasar, and dedicated spectroscopic and imaging surveys have added over one hundred new systems to this list. In recent years, the amount of available data across the whole-sky has grown exponentially. Full-sky data from X-ray to radio wavelengths exist, and predictions suggest there are many …
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Investigation of Surface Instability Processes in Burned Areas through Remote Sensing and Field Surveys
… in sediment connectivity. This study combines field surveys, remote sensing, and experimental analyses in the 2021 Montiferru-Planargia Fire and 2022 Los Guajares Fire burnt areas to investigate these processes. Thermal spalling is identified as the key mechanism generating new debris and …
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An analysis of technical standards for cadastral field surveys and considerations for the development of a model law
… to the technical standards for cadastral field surveys. The primary objectives of this paper are to illustrate the need for homogeneity, in the criteria and in the methods, by which we judge the quality of a survey; and additionally, to suggest an alternative approach to be used in …
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Speleogenesis and Delineation of Megaporosity and Karst Geohazards Through Geologic Cave Mapping and LiDAR Analyses Associated with Infrastructure in Culberson County, Texas
… In this study, a combination of both physical field surveys and analyses of high resolution (~30 cm accuracy) LiDAR data was used to create a theoretical model for karst development across the region. This idealized model considers speleogenetic formation type variations (hypogene and epigene), …
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Changes in the Distribution of "Acris crepitans blanchardi", with Studies of Nesting Microhabitat and the Possible Impact of Ultraviolet-B Radiation
Field surveys were completed to determine the current distribution of "Acris crepitans blanchardi" (cricket frog) in lowa, Minnesota, and South Dakota. These field surveys were unable to locate any populations of cricket frogs in Minnesota, South Dakota, or the northernmost tier of lowa counties. …
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Participatory and non-participatory modes of nutrition communication in a developing country : a case study of Nepal
… in the context of a developing country. Field surveys, focus group discussions and interviews with various key persons involved in nutrition development, at the national and village level in Nepal, were the main field methods used in this study. Quantitative and qualitative analyses were …
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Evaluating Travelers Experience with Highway Advisory Radio (HAR) And Citizens Band Radio Advisory System (CBRAS) On Florida's Turnpike Enterprise Toll Roadways And Florida Interstate Highways
… Telephone Interviewing). The second tool is a field survey that intercepts travelers at the Florida Turnpike Enterprise (FTE) service plazas and the Florida Interstate Highway (FIH) rest areas. HAR and CBRAS are traditional components of the Advanced Traveler Information Systems (ATIS). This …
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Cultural Metacognitive Processes: Psychological Mechanisms Promoting Intercultural Effectiveness
… were employed to test my hypotheses using quasi-field surveys with executives, 360 degree multi-rater surveys with MBA students as well as experimental designs with lab and crowdsourcing participants.
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Patterns and mechanisms of stem mortality in Acacia nigrescens induced by elephants and fire
… bark and burning Acacia nigrescens stems. Field surveys were conducted in order to investigate patterns of bark stripping in relation to mortality patterns of large trees occurring subsequent to natural fires. In the experimental study, an increasing probability of mortality was associated …
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Urban land subdivision : a case for more practical by-laws, Kaohsiung, Taiwan
… The material in this study is based upon field surveys carried out by the author during the summer of 1980. The analysis is based on a methodology developed in the Urban Settlement Design Program, under the direction of professor Horacio Carninos.
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ADVANCING NATIONAL-SCALE HIGH-RESOLUTION CROP MAPPING USING REMOTE SENSING
… by integrating remote sensing, sample-based field surveys, and machine learning to support both long-term and near-real-time agricultural monitoring. Three studies collectively contribute to methodological innovations in high-resolution crop mapping across diverse agricultural systems. First, …
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Assessment of air pollution impacts on vegetation in South Africa
Field surveys and biomonitoring network experiments were conducted in selected areas in South Africa to assess possible air pollution damage to vegetation. During field surveys, atmospheric fluoride was identified as an important pollutant that damaged vegetation in residential areas north of Cape …
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An environmental study of the Lourens River estuary
… the Lourens River estuary was completed, whereby field surveys were undertaken and all available knowledge was collated. The Lourens estuary is a small system opening into False Bay, Southwestern Cape; it is almost entirely enclosed within AECI security fences and access to the public is …
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Policy memorandum Outeniqua and Langkloof mountains Southern Cape.
… a management policy for the area. Literature and field surveys supplied data for a basic description of the ecosystems Management objectives were formulated to realize the following Land-use types: water conservation, nature conservation, agricultural utilization timber production, recreation and …
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The Regeneration Niche in Bottomland Hardwood Forests: Tree and Herbaceous Communities Along Interacting Gradients of Flood and Light in East Texas Floodplains
… trade-off between shade and flood tolerance. Field surveys demonstrated that small canopy gaps in BLH forest support shade-tolerant tree seedlings and increase understory plant diversity, but suppress shade-intolerant hardwoods such as oaks and hickories. A complementary greenhouse study …
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Factors which determine Employees' Commitment in an Organization: a Case of Public and Private Institutions in Tanzania
… the methodology which was used included field surveys, face to face interviews, observations and review of relevant documents. Analysis was done using qualitative and quantitative methods. The Survey data were analyzed using SPSS [statistical packages for social sciences] and excel …
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Planning of Open Space Using Physical Geographical Features in the South Dry Sac Drainage Basin
… by the use of maps, previous studies, and field surveys. The data were statistically coded to assemble the physical features into a unit representing the sensitivity of the land. The computer programs SPSS-Statistical Package for the Social Sciences and SYMAP-Synagraphic Mapping Program …
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