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 20 of 72 for “"hierarchical cluster analysis"”.
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Resilience Profile Among People with Spinal Cord Injury: A Cluster Analysis
… hospitalized to discharge. Using SPSS 19.0, a hierarchical cluster analysis was performed to preliminarily explore optimal patterns of resilience based on the psychosocial evaluations. Further a two-step cluster was used as a post hoc test of cluster quality and predictor importance. ANOVA and …
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Extracting Prototypes From Lexical Feature Norms for Settlement Concepts
… to generate features for 57 settlement concepts. Hierarchical cluster analysis identified distinct clusters based on shared features. Central tendencies extracted from clusters at different levels of abstraction revealed featural prototypes and an overall family resemblance structure. To probe the …
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Some Model-Based and Distance-Based Clustering Methods for Characterization of Regional Ecological Stressor-Response Patterns and Regional Environmental Quality Trends
… in regression relationships, we use model-based clustering procedures with class-specific regression models. Units for clustering are taken to be basins, or combinations of basins and ecoregions. We rely on a Bayesian formulation and sample the posterior distribution using a Markov chain Monte …
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From illegitimate disruption to failing state : how South African newspapers framed 'service delivery' protests in 2013
… prevalent frames and sources used, and using a hierarchical cluster analysis identifies how frames are related to each other, how sources are related to each other, and how frames and sources correlate. The study found that the most prevalent frames on ‘service delivery protests’ used by the …
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The Relationship Between School Division Climate and Student Achievement of School Divisions in the Commonwealth of Virginia
… Truancy report to form a climate index (CI). A Hierarchical Cluster analysis was used to determine relationships between school division climate, as measured by the CI, and student achievement, as measured by the Virginia Standards of Learning (SOL) Tests, in school divisions in the Commonwealth …
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Mutual information: inferring tie strength and proximity in bipartite social network data with non-metric associations
… of mutual information in social network analysis, although it was widely used in other areas of network analysis. Two studies in the current thesis showed that mutual information can be effectively used to infer tie strength and proximity from bipartite social network data with non-metric …
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Techniques for studying vocal learning in bottlenose dolphins, Tursiops truncatus
… and to provide data for the development of analysis techniques, a pilot study was performed on dolphin calves born in captivity. Focal samples of the social interactions of dolphin mothers and calves were taken over several months before and after the births of four calves, with simultaneous …
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Effects of Language Dominance in Spanish-English Bilingual Speakers
… was analyzed within and between groups using hierarchical cluster analysis, matrix comparisons (Mantel Tests), Spearman correlations, and qualitative k-means clustering analysis. Results suggest the possibility of dynamic interconnection between languages, with semantic connection weights …
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Cranial remains from the graveyard to the laboratory: restoration, conservation and craniometric analysis of medieval British skeletal samples
… medieval samples by means of craniometric analysis. The purpose of this study is to determine whether craniometric variation among British medieval groups exists and what are the causes of these differences. Following the reconstruction of 267 skulls from Gloucester, Poulton and Linenhall, …
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An assessment of the relationship between Global Competitiveness Index scores and national GDP per capita growth rates
… over the period 2007-2013 for 118 countries. A hierarchical cluster analysis was performed to segment countries according to homogeneous competitiveness patterns, followed by stepwise multiple regression modelling on the total sample and the resulting clusters in order to assess impacts on …
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A new dimensionality estimation tool for multiple-item tests and a new DIF analysis paradigm based on multidimensionality and construct validity
… the testing industry today: dimensionality analysis and DIF (Differential Item Functioning) analysis. Chapter 1 develops the use of new dimensionally-sensitive proximity measures with Hierarchical Cluster Analysis and DIMTEST to estimate the dimensionality structure of tests. The results of …
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Psychological Measures to Predict Serious Prison Violence
… TCU Drug Screen II). Using a logistic regression analysis, history of mental illness and the MMPI-2-RF scale of Psychoticism accurately predicted violent inmates from non-violent inmates while controlling for demographic and criminal variables. A weighted measure of violence severity was …
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The development of the Leeds alliance in supervision scale (LASS): A brief sessional measure of the supervisory alliance
… Clinical Psychologists. Principal Components Analysis (PCA) of the data resulted in a 2-factor solution. Hierarchical Cluster Analysis led to the identification of 3 clusters measuring the supervisory alliance. Representative items were chosen, resulting in the 3-item LASS. Study 2: The LASS, …
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Conflicting Frames : the dispute over the meaning of rolezinhos in Brazilian media
… Media Cloud-the system for large scale content analysis developed by the Berkman Center at Harvard and the MIT Center for Civic Media. Data from Facebook indicated which articles received more attention on the social network. A framing analysis was performed to describe the conflicting frames in …
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Disentangling Contributions of Process Elements to the Fair Process Effect: A Policy-Capturing Approach
… fairness of the situation. The policy capturing analysis indicated that the weights given to the fairness cues varied somewhat across individuals. Hierarchical cluster analysis indicated that participants' fairness policies could be grouped into 3 homogenous clusters: two "main effects clusters" …
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A Statistical Examination of the Climatic Human Expert System, The Sunset Garden Zones for California
… processed first through a Principal Component Analysis, and then the first five principal components are entered into a Ward's Hierarchical Cluster Analysis. The resulting clusters were translated back into ArcGIS as a raster coverage, where the clusters were climatic regions. This process is …
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The Use of Concept Mapping/Pattern Matching to Determine the Content Domain for Information Literacy in Baccalaureate Education
… literacy. Using multidimensional scaling and hierarchical cluster analysis, the outcomes were grouped into eight clusters representing the content domain for information literacy. Following the creation of the concept maps, the resulting priorities and their conceptualization schema were …
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A comprehensive chemical examination of methylamphetamine produced from pseudoephedrine extracted from cold medication
… set for data interpretation. Organic impurity analysis was undertaken using a developed and validated GCMS impurity profiling method. The GCMS method discriminated the samples by synthetic route based on the presence of specific target impurities. Carbon, nitrogen and hydrogen stable isotope …
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Temporal variation in the coral reefs of the east coast of the inner gulf of Thailand
… (1995- 1998) using a video transect method. Hierarchical cluster analysis shows three distinctive reef community types dominated by 1) Porites, 2) Acropora and 3) zoantharians. The reefs are developed under naturally turbid conditions and relatively low salinity due to the proximity of four …
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Variability and Drivers of Forest Communities at the Great Dismal Swamp
… tree density, richness, and diversity. However, hierarchical cluster analysis identified four community types: Gum (G), Maple-Gum (M-G), Sweetgum-Maple (SG-M), and Maple (M). These communities differed in tree composition and structure; differences in other growth forms (shrubs, herbaceous, and …
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