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 9 of 9 for “"National Center for Geocomputation, NCG"”.
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Calculating and Assessing Mobile Mapping System Point Density for Roadside Infrastructure Surveys
… applying 3D surface normals and 2D geometric formulae and outputs profile angle, profile spacing, point spacing and point density. Each of these elements are a major factor in calculating point density on arbitrary objects, such as road signs, poles or buildings - all important features in …
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The spatial structure of mobile communication networks
… in particular offer an unparalleled source of information given their personal portable nature and ubiquity in modern society. The use of mobile phones has become so common that these datasets are no longer merely communication logs but close approximations of the network of interpersonal …
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Temporal decomposition and semantic enrichment of mobility flows
… the past decade as loc- alisation technologies for capturing mobility ows have become ubiquitous. Novel analytical approaches for understanding and structuring mobility data are now required to support the back end of a new generation of space-time GIS systems. This data has become increasingly …
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Geographically weighted Regression with non-Euclidean distance metrics
Available with hard copy only.
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Acoustic data optimisation for seabed mapping with visual and computational data mining
… their waters. While the echosounders, often used for exploration of our oceans, have developed at a tremendous rate since the WWII, the methods used to analyse and interpret the data still remain the same. These methods are inefficient, time consuming, and often costly in dealing with the large …
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Using Geovisual Analytics to investigate the performance of Geographically Weighted Discriminant Analysis
… Discriminant Analysis (GWDA) is a method for prediction and analysis of categorical spatial data. It is an extension of Linear Discriminant Analysis (LDA) that allows the relationship between the predictor variables and the categories to vary spatially. This is also referred to spatial …
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Road Features Extraction Using Terrestrial Mobile Laser Scanning System
… the development of three automated algorithms for the extraction of road features from terrestrial mobile LiDAR data. LiDAR data is a rich source of 3D geo-referenced information whose volume and scale have inhibited the development of automated algorithms. Automated feature extraction …
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Commuting flows & local labour markets: Spatial interaction modelling of travel-to-work
… commuting patterns and that a failure to account for LLM conditions may seriously hinder the applicability of models of commuting. Speci�cally, it is found that there are many di�erent LLMs across Ireland, and that these LLMs characterise the commuting patterns of population sub-groups. By …
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Linking Spatial Video and GIS
Spatial Video is any form of geographically referenced videographic data. The forms in which it is acquired, stored and used vary enormously; as does the standard of accuracy in the spatial data and the quality of the video footage. This research deals with a specific form of Spatial Video where …