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 17 of 17 for “"Least-cost path"”.
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Least Cost Path Modeling Between Inka and Amazon Civilizations
Least Cost Path Analysis (LCPA) is a GIS-based approach for calculating the most efficient route between a start and end point, often in terms of shortest time or least amount of energy. The approach is often applied in archaeology to estimate locations of sites, and routes between them. We applied …
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GIS based optimal design of sewer networks and pump stations
… downstream subwatersheds via a force main. The path and destination of each force main in the system is determined by applying the Dijkstra's shortest path algorithm to select the least cost path from a set of potential paths. This method seeks to minimize the total dynamic head. A modified …
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Determining Impediments to Gene Flow in a Natural Population of Cornus florida L. Cornaceae, Using Integrative Landscape Genetic Techniques
… combining GIS and landscape genetic techniques (Least Cost Path Analysis, Circuit Theory, and Conditional Genetic Distance). Traditional population genetic analysis indicated pair-wise relatedness was significantly correlated to distance (Pearson; r = -0.312, P < 0.001) suggesting a spatial …
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Identification of barriers and least cost paths for autonomous vehicle navigation using airborne LIDAR data
… a significant role in identifying barriers and least cost paths for such vehicles. Least cost paths minimize the sum of impedance across a surface. Impedance can be measured by steepness of slope, impenetrable barriers such as vegetation and buildings, fence lines and streams, or other factors …
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Accumulated Surfaces & Least-Cost Paths: GIS Modeling for Autonomous Ground Vehicle (AGV) Navigation
… an accumulated surfaces can be built on which a least-cost path can be located. The sensitivity analysis allows generation of many routes which can be field tested for the appropriate weight selection for each factor. Ultimately, the entire process would select an optimal path and output closely …
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Modelling Past Land Routes in Archaeology: A ‘Roman Roads’ Theoretical and Methodological Rethinking
Since the 1990s, the use of movement models for predicting and explaining past land routes has become common-place in archaeology. Despite their long use, movement models remain largely theoretically unjustified and methodologically immature. Without addressing these issues, outcomes from movement …
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Mapping Connectivity: Integrating Ecological Landscape Analysis into Urban Planning in the City of Nanaimo
… and composition of the urban landscape; third, least-cost path analysis to identify potential ecological corridors; and finally, the application of circuit theory to evaluate the relative importance of identified corridors and key areas. The research produces insights that can be used for …
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Exploring Cork City's tourist scene: sites, facilities and mobility
… estimation, Origin-Destination matrix, and least cost path analysis. The research offered valuable insights on the current state of tourism in Cork city and potential avenues for improvement. The findings from the study revealed a random distribution of tourist sites, while the majority of …
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DISPERSAL BEHAVIOR OF WHITE-TAILED DEER IN AN AGRICULTURAL LANDSCAPE
… landscape, 2) compare occurrence rates and path movement metrics for dispersal and excursion movements to determine if underlying differences in behavior exist that would allude to mechanisms for accepting the risk of leaving a home range, 3) create and test the performance of expert opinion …
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Prehistoric Roads of New Mexico: A Synthesis of GIS and Remote Sensing Techniques
… predict the location of prehistoric roads. Least cost path analysis and path distance analysis are capable of predicting prehistoric roads in a GIS environment, though to different degrees in each study area. Several remote sensing techniques, such as iron-oxide indices and edge detection …
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Visualising continuous intra-landscape isolation for brushtail possums using least-cost modelling
… quantify and visualise isolation. Methods using least-cost modelling to measure connectivity are presented that fill this knowledge gap. To begin, I demonstrate that the accumulated-cost of a least-cost path is the only reliable method to measure connectivity using least-cost modelling. Then, a …
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The Potential for Repurposing Disturbed Mining Properties in Nevada as Utility-Scale Solar Facilities
… as solar energy installations. A more detailed least cost path style analysis is also performed on mine sites within The Carlin Trend mining district in northeastern Nevada to estimate the potential return on investment from a subset of potential sites. Nuances to this proposal are also explored …
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NORTHERN RIVER OTTER POPULATION ASSESSMENT AND CONNECTIVITY IN WESTERN MONTANA
… with two of those migrants between ID and MT. Least-cost path analyses revealed that genetic distances between pairs of otter samples were more correlated with Euclidean distances than stream distances. I characterized vegetation at 310 random locations and 35 otter latrine sites along the …
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NORTHERN RIVER OTTER POPULATION ASSESSMENT AND CONNECTIVITY IN WESTERN MONTANA
… with two of those migrants between ID and MT. Least-cost path analyses revealed that genetic distances between pairs of otter samples were more correlated with Euclidean distances than stream distances. I characterized vegetation at 310 random locations and 35 otter latrine sites along the …
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Enhancing integrated transport planning: A spatial multi-criteria analysis approach to the MyCiTi integrated rapid transit system, South Africa
… pairs identified were solved by carrying out a least cost path assessment based on the mean impedance values along the existing road network. The routes developed were compared to the MyCiTi feeder bus routes using Key Performance Indicators established in this research to determine whether this …
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Managing deer: attractants, repellents, invasion modelling and impact assessment
… Species Distribution Model (iSDM) combined with Least Cost Path Analysis. The findings indicated that 94% of Ireland is vulnerable to invasion, and deer numbers could reach almost 100,000 when the island is fully colonised in potentially just over a century’s time. Immediate action is urged in …
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Mapping elk distribution on the Canadian prairies: Applying local knowledge to support conservation
… protected areas. A connectivity analysis using least cost path analysis determined that core habitat areas endemic with chronic wasting disease (CWD) in wild elk are highly connected to other high quality habitat areas. CWD thus has the potential to reduce cervid populations within the study …