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Articles 1 - 4 of 4
Full-Text Articles in Social and Behavioral Sciences
Topological Equivalence And Similarity In Multi-Representation Geographic Databases, Joao Argemiro De Carvalho Paiva
Topological Equivalence And Similarity In Multi-Representation Geographic Databases, Joao Argemiro De Carvalho Paiva
Electronic Theses and Dissertations
Geographic databases contain collections of spatial data representing the variety of views for the real world at a specific time. Depending on the resolution or scale of the spatial data, spatial objects may have different spatial dimensions, and they may be represented by point, linear, or polygonal features, or combination of them. The diversity of data that are collected over the same area, often from different sources, imposes a question of how to integrate and to keep them consistent in order to provide correct answers for spatial queries. This thesis is concerned with the development of a tool to check …
Issues In Representing Ethnic Residential Segregation, Wanda Teresa Gayle Smith
Issues In Representing Ethnic Residential Segregation, Wanda Teresa Gayle Smith
Theses and Dissertations (Comprehensive)
This study will look at some of the issues involved in representing ethnic residential segregation. Segregation studies rely heavily upon indices and maps. However, both of these are sensitive to the spatial boundaries used. As well, maps have a visual element which affects the nature and degree of representation. Toronto has been chosen as the area of study because of its high degree of ethnic diversity. Five indices that describe the five dimensions of segregation (Massey and Denton, 1988) will be calculated at four standard levels of aggregation. As well, several types of maps will be produced to illustrate the …
Modelling Spatial Processes: The Identification And Analysis Of Spatial Relationships In Regression Residuals By Means Of Moran's I (Germany), Michael Tiefelsdorf
Modelling Spatial Processes: The Identification And Analysis Of Spatial Relationships In Regression Residuals By Means Of Moran's I (Germany), Michael Tiefelsdorf
Theses and Dissertations (Comprehensive)
This thesis deals with the implementation, identification and analysis of relationships between geo-referenced objects. Significant spatial relationships manifest themselves in a spatial process which is modelled on a combination of spatial structure and spatial autocorrelation levels. Simple spatial structures reflect plain spill-over effects between adjacent spatial objects, whereas theoretical guided spatial structure mirror functional exchange relationships within the system of spatial objects. In empirical work, the underlying spatial process is unknown. The linking mechanism between a hypothetical spatial structure and a stochastic input must be identified from the observed data. This is accomplished here by means of the test statistic …
An Evaluation Of Ambulance Service Performance Using A Geographic Information System, Jeremy Peters
An Evaluation Of Ambulance Service Performance Using A Geographic Information System, Jeremy Peters
Theses and Dissertations (Comprehensive)
The accessibility, distribution and utilization of emergency health care services have a great impact on the effectiveness, efficiency and equity of health service delivery. The impact of these factors is heightened by the fact that ambulance resources, which are an important component of emergency health care, are often insufficient, resulting in performances below those required to respond reliably to emergency calls from demand areas. Measures of realized geographic accessibility of ambulances to call locations are of considerable importance in planning the deployment of this service as they allow planners to account for response time variations, often caused when ambulances are …