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.
Results
Showing 1 to 20 of 30 for “"point pattern"”.
-
Spatial dependency between a linear network and a point pattern
… we discuss the spatial relationship between point processes and a linear network. As a starting point, we discuss basic spatial point processes and tests for first-order homogeneity. Following that, we discuss second-order properties of point processes in the form of Ripley's K-function for …
-
Cross-Spectral Analysis For Spatial Point-Lattice Processes
… of a hybrid process consisting of a spatial point process arid a lattice process using two-dimensional spectral techniques. Simulated spatial point-lattice patterns are used to demonstrate how the different cross-spectral statistics can reveal correlation between the two components. A method …
-
The Evolution of a Commercial Landscape: A Case Study of the Motels Along U.S. Highway 31-W
… over time will be examined to determine patterns of use in relation to the nearest 1-65 interchange. The study uses nearest neighbor analysis to find patterns among the existing motel structures, and contingency/chi-square analysis to find relationships between motel locations and …
-
Approaches to the spatial modelling of cancer incidence and mortality in metropolitan Perth, Western Australia, 1990 -2005
… cancers, using two methodologies: Area-to-Point Poisson (ATP) kriging and fitting an inhomogeneous Poisson process model using the Berman-Turner algorithm. ATP Poisson kriging was used to undertake the analysis on the spatial distribution of cancer rates per 100,000 person-years for Perth …
-
Hierarchical Segmentation and Clustering Using Similarity Analysis
… of unsupervised low-level classification of point patterns. Low-level classification is understood as the problem of unsupervised detection of structure in multidimensional images and point patterns. Images and point patterns consist of multiple features or measurements of physical phenomena. …
-
Spatial Analysis of Motor Vehicle Accidents in Johnson City, Tennessee, as Reported to Washington County Emergency Communications District (911).
… ArcGIS software using proximity analysis, point pattern analysis, and hotspot analysis.</p><p>Motor vehicle accidents evaluated during this study consist of accident locations reported to the Washington County Emergency Communications District concerning property damage, personal injury, …
-
Spatial Distributions of Domestic and Non-Domestic Violence by Firearm Involvement
… subgroups, and compared pairwise using spatial point pattern testing to establish if significant differences exist between subgroup crime occurrence rates for each of the census block groups that make up the city of Austin (n = 582). Incident subgroups were found to be different based on whether …
-
Development of an Autonomous Unmanned Aerial Vehicle for Aerobiological Sampling
… we explored a variety of different sampling patterns for our autonomous UAVs including multiple GPS waypoints plotted over a variety of spatial scales. We conducted a total of 25 autonomous aerobiological sampling flights for five different aerobiological sampling patterns. The pattern of a …
-
Computational tools for enabling longitudinal skin image analysis
… rigid registration, a microrelief junction point matching algorithm based on point pattern matching is shown to accurately match two sets of junction points. Immediate applications for these computational tools are change detection for pigmented skin lesions and deformation field computation …
-
Modeling Point Patterns, Measurement Error and Abundance for Exploring Species Distributions
… and soil-type factors. The empirical pattern is formulated as a degraded version of the potential pattern, with the degradation effect accomplished in two stages. First, we adjust for land use transformation and then we adjust for measurement error, hence misclassification error, to …
-
Network dual K function: Exact statistical methods for analyzing co-location on street networks
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
-
Spatial Pattern Analysis of Tree Species Distribution in a Central Appalachian Upland Heath Barren
The spatial pattern of plants reflects biotic and abiotic factors, including interactions with surrounding environmental conditions and other plants. Appalachian heath systems are presently understudied regarding spatial point pattern research, despite representing a unique and biologically …
-
A spatiotemporal analysis of Army base distributions in the contiguous United States from 1800 to 1900
… it was necessary to establish some rational points of reference to compare fort and personnel attributes of significant timeframes from 1800 to 1900. More specifically, once the distributional patterns were revealed, they were compared by using center of population, geographic means, point …
-
A spatiotemporal analysis of Army base distributions in the contiguous United States from 1800 to 1900
… it was necessary to establish some rational points of reference to compare fort and personnel attributes of significant timeframes from 1800 to 1900. More specifically, once the distributional patterns were revealed, they were compared by using center of population, geographic means, point …
-
Data-intensive spatial pattern discovery based on generalized spatial point representations
… data that can be modeled as generalized spatial points while addressing the following key research questions: how to estimate the spatial and spatiotemporal patterns of geographic phenomena from geospatial big data based on spatial point models? How to compare these patterns to gain insights into …
-
First- and Second-Order Properties of Spatiotemporal Point Patterns in the Space-Time and Frequency Domains
Point processes are common in many physical applications found in engineering and biology. These processes can be observed in one-dimension as a time series or two-dimensions as a spatial point pattern with extensive amounts of literature devoted to their analyses. However, if the observed process …
-
Analysis of intraspecific and interspecific interactions between the invasive exotic tree-of-heaven (Ailanthus altissima (Miller) Swingle) and the native black locust (Robinia pseudoacacia L.)
… additive series in the greenhouse and 2) spatial point pattern analysis of trees in a silvicultural experiment were used to analyze the intraspecific and interspecific interference between these two species. In the greenhouse experiment, total biomass responses per plant for both species were …
-
Spatial point process modelling of a biodiverse plant community
… this thesis addresses the suitability of spatial point processes for the modelling of plant communities with the aim of understanding the mechanisms that sustain biodiversity and allow species coexistence through an analysis of a biodiverse plant community in Western …
-
Seeing Prehistory through New Lenses: Using Geophysical and Statistical Analysis to Identify Fresh Perspectives of a 15th Century Mandan Occupation
… disagrees with previous conclusions that a patterned layout of structures existed, significant clustering shown through point pattern analysis and Ripley’s K function amongst structures. Clustering of external storage pits also resulted from similar analysis, highlighting a connection …
Page 1 of 2