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 16 of 16 for “"Spatial Scan"”.
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Data Mining Algorithms for Classification of Complex Biomedical Data
… from multi-source biological data; (3) Spatial scan for movement data. In microarray classification, samples belong to several predefined categories (e.g., cancer vs. control tissues) and the goal is to build a predictor that classifies a new tissue sample based on its microarray …
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Socio-spatial inequalities in late-stage cancer diagnosis in Illinois: spatiotemporal trends and methodological challenges
… dissertation examines the effects of social and spatial inequalities on late-stage diagnosis of colorectal and breast cancer, and it addresses several methodological challenges surrounding the use of ZIP codes as a study unit in analyzing late-stage cancer at diagnosis. Given that my dissertation …
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Small and Stable Descriptors of Distributions for Geometric Statistical Problems
… data sets. </p><p>Finally, we examine a spatial anomaly detection problem: computing a spatial scan statistic. The input is a point set P and measurements on the point set. The spatial scan statistic finds the range (e.g., an axis-aligned bounding box) where the measurements inside the …
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An evaluation of small-area statistical methods for detecting excess risk: with applications in breast and colon cancer mortality in Scotland 1986-1995
… in Chapter 2, these being the SIR, Circular Spatial Scan and Flexibly-Shaped Spatial Scan. The reason for this simulation study is to evaluate these techniques on simulated data arising from real scenarios. The strengths and weaknesses of these techniques are then highlighted which will prove …
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Rebuilding Coastal Mississippi Following Hurricane Katrina: A Spatial and Temporal Analysis
… with the VIS-STAMP software package, and the spatial scan statistic SaTScan. The results of these analyses show that recovery is not occurring evenly in space or time across the Gulf Coast. The level and extent of storm damage has a notable effect on the distribution and timing of …
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The Geography of Farmworker Health: A Mixed-Method Exploratory Analysis of Chronic Disease
… utilized two quantitative techniques. The first, spatial scan statistics, were used to measure geographic variations in farmworker disease clusters, while the second technique featured the delineation of healthcare service areas. Qualitative techniques featured interviews with key informants and …
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Multiscale decomposition of spatial lattice data for hotspot prediction
… Next, we make use of the DPT to decompose spatial lattice data along with the multiscale Ht-index and the spatial scan statistic as a measure of saliency on the extracted pulses to detect significant hotspots. In the literature, geostatistical techniques such as Kriging has been used in …
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Spatial Patterns and Correlates of Lower Respiratory Tract Illnesses in Children from Drakenstein, Western Cape
… countries. However, little is known about the spatial variation of LRTIs especially in developing countries such as South Africa. This study aimed to explore and map the spatial dependence and clustering of childhood pneumonia and wheeze and to identify factors associated with these diseases in …
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Spatio-temporal Event Detection and Forecasting in Social Media
… and (3) Propose an innovative local modularity spatial scan algorithm. For the second of these methods, traditional solutions are unable to capture the spatiotemporal context, model mixed-type observations, or utilize prior geographical knowledge. The contributions of this work include: (1) …
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Developing A Geospatial Protocol For Coral Epizootiology
… how geographic information systems (GIS) and spatial statistics, specifically the techniques used to map, detect, and spatially analyze disease epidemics, could be used to advance our understanding of coral reef health. Given that different types of spatial analysis, as well as different …
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The Emergence of Lyme Disease in Appalachia (2000-2019)
… in understanding the current and future spatial range and impacts of the continued emergence of Lyme disease in Appalachia. This study thus sought to examine the extent of the emergence of Lyme disease in Appalachia between 2000 and 2019 using spatial scan statistic. This type of analysis …
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Analisi spaziale della longevità in Emilia-Romagna
… aggregazioni territoriali di forma regolare (spatial scan statistic, Kulldorff e Nagarwalla,1995; Kulldorff,1997, 1999) o dall’andamento geometrico “libero” (flexible scan statistic, Tango e Takahashi,2005; algoritmo genetico, Duczmal et al.,2007; greedy growth search, Yiannakoulias et …
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Predicting performance on fluid intelligence from speed of processing, working memory, and controlled attention
… the Cascade model is consistent within the visuo-spatial and verbal-numerical modalities. The second goal was to examine whether the executive attention component ofworking memory accounts for the relation between working memory and fluid intelligence. Two hundred and six undergraduate students …
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Super-Utilization: The New Perfect Storm of Health Reform
… attributed specifically to HRU by using the SatScanTM method for spatial scan statistics; 2) to explore overlap of identified clusters with population-based rates of readmission using chloropleth mapping to visually depict the relationship; and 3) to assess differences in the geographic …
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Modeling Spatial Distribution and Habitat Associations for Juvenile Pallid Sturgeon (Scaphirhynchus albus) in the Missouri River
… sample size), it is often difficult to evaluate spatial distribution of groups of fish over long time periods (>3 years). Standardized random sampling, which relies on a variety of gear types including trammel nets, otter trawls, gillnets and setlines, has been conducted in the reach of the …
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The Spatial and Molecular Epidemiology of Lyme Disease in Eastern Ontario
… rurality of the locality of home residence. Spatial cluster analyses further revealed that human Lyme disease cases clustered in regions with the high numbers of reported B. burgdorferi-infected ticks in the environment. Many individuals residing in large metropolitan regions, like the City …