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Showing 1 to 20 of 21 for “"principle components analysis"”.
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The Development of the Hope and Coping in Recovery Scale (HCRS)
… the Hope and Coping in Recovery Scale (HCRS). A principle components analysis (PCA) found two distinct factors (hope and coping) to be present in the process of recovery from SUD. Implications for future research on the recovery process and the HCRS are discussed.
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Burnout in academics : the role of humour and optimism as stress buffers
… were later returned to the researcher by mail. A principle components analysis was first performed on the Life Orientation Test-Revised, a self-report instrument designed to measure optimism, and demonstrated support for a two-dimensional model of optimism and pessimism. A hierarchical multiple …
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The Perceived Community Engagement Survey: Structure, Reliability, and Validity of a Community-based Organization Measure of Engagement with the Broader Community
… Survey (PCES) was developed based on the principles of CBPR within a CBO/community relationship frame. The study explored the reliability and validity of the scale through a principle components analysis, reliability analysis, linear regressions, and examinations of convergent and …
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Transforming an especially challenging urban school against the odds: a multivariate statistical analysis of student perceptions
… within a post-positivist paradigm In phase I, Principle Components Analysis was used to reduce an initial 90-item questionnaire, administered to 302 students, to identify a three factor multilevel school improvement model that comprised 17 sub-factors. The derived factors were: i. leadership at …
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Self-efficacy: Judgments of Ability or Willingness?
… and negative effects of consuming alcohol. Principle components analysis indicated that ability and willingness were distinct constructs. Results of both studies are discussed in terms of the ongoing debate between Albert Bandura and Irving Kirsch and the need for a more clarity regarding …
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Patterns of flow variability: consideration for river regulation and salmon management
… to analysing natural variations in flow regimes. Principle components analysis and cluster analysis, were combined with the Indicators of Hydrologic Alteration approach to analyse 850 years of station flow data from 17 rivers within 3 regions. The analyses focussed on functional flows of …
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Community persistence and the pattern of community variability over time: a test using fossil assemblages from four marine transgressions in the Breathitt Formation (Middle Pennsylvanian) of Eastern Kentucky
… statistical analyses such as cluster analysis and principle components analysis were used to classify fossil assemblages sampled into a variety of paleocommunity types, each associated with a particular lithological facies. Paleocommunity types that were found to occur in more than one …
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Paleocommunities of the Yorktown Formation (Pliocene) of Virginia
… gastropods, and other taxonomic groups. Principle components analysis, ANOVA, MANOVA, and other analyses were used to test the occurence and recurrence of local paleocommunities, paleocommunities, and paleocommunity types. Three paleocommunity types which occured under specific …
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Exploring Social Polarization in Jefferson County, Kentucky: An Analytical Approach
… may be occurring in Jefferson County, Kentucky. Principle components analysis, a factor analytic method, can create an index of component scores for the measurement of social polarization. For analysis, the thirteen market areas of Jefferson County, Kentucky, are used as cases. Based on a …
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3D multiresolution statistical approaches for accelerated medical image and volume segmentation
… medical volume which are multi-resolution analysis and statistical modeling. Multi-resolution analysis has been mainly employed in this research for extracting the features. Higher dimensions of discontinuity (line or curve singularity) have been extracted in medical images using a modified …
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The Effects of dairy cattle antibiotics on soil microbial community cycling and antibiotic resistance
… in soils exposed to antibiotic laden manure. Principle components analysis suggest that while some of the variation in enzyme activities are associated with the abundance of antibiotic resistance genes, soil organic matter (total organic, mineralizable, and particulate organic carbon) was the …
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Relationships Among Swimming Ability, Habitat use, and Morphology of Freshwater Fishes from Texas and Louisiana
… the Family Cyprinidae were identified with principle components analysis (PCA) and correlated (Peterson's correlation coefficients) with individual relative (bl·s-1) swimming speed. My results indicated that morphological attributes were a poor indicator of swimming ability among families …
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Validation Of Kentucky Wetlands Rapid Assessment Method (ky-Wram) Metrics Using Macroinvertebrate Communities Of Forested Depressional Wetlands
… Rapid Assessment Method. Multiple regression analysis comparing macroinvertebrate metrics to habitat variables, water quality, and RAMs were conducted as separate models. Principle Components Analysis was used to evaluate the amount of species variation explained by the RAMs and RAM metrics. A …
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Analysis of Hydric Pine Flatwood Ephemeral Pool Macroinvertebrate and Crustacean Assemblages Along a Temporal and Spatial Gradient From a Hypothesized Colonial Source
… site. Bray-Curtis based ordinations and cluster analysis revealed significant dissimilarity between and among macroinvertebrate, chironomid, and crustacean assemblages in ephemeral pool and intermittently exposed cypress head habitats at distances within 200 meters. A Principle Components …
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Validation of the Juvenile Sexual Offense Recidivism Risk Assessment Tool--II
… JSOs were removed from the predictive validity analysis, the ROC did not substantially improve (ROC = .66; 95% CI from .59 to .73). The amount of missing data was also examined vis a vis the predictive accuracy. The results of those anlayses indicated that missing data did not substantially …
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Akut-aphasische Sprachproduktion, eine Dichotomie? : Zur Spontansprache akuter Aphasien
… einer Faktorenanalyse reduziert. Mit Hilfe der principle components analysis (PCA) konnten 7 relevante Faktoren ermittelt werden (Faktor 1: Wortvariabilität, Faktor 2: Sprechgeschwindigkeit und Phrasenlänge; Faktor 3: phonematische und syntaktische Selbstkorrekturen, Faktor 4: Wortabruf; Faktor …
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Environmental assessment, documentation and spatial modeling of heavy metal pollution along the Jordan Gulf of Aqaba using coral reefs as environmental indicator
… the marine ecosystem in Aqaba. Applying the Principle Components Analysis method (PCA) to all samples taken along the coastline has resulted in categorizing three different groups according to their metal enrichment, the first is composed of samples taken from the north beach and the main …
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Behavioural, mensural, and ecological correlates of polygyny in the eastern meadowlark (Sturnella magna)
… once early and once later in the nesting season. Analysis of data involved univariate comparisons between monogamous and polygynous males using T-tests and multivariate comparisons were made using discriminant function analysis (DFA) and principle components analysis (PCA).No correlations were …
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Genomic and biochemical investigation of soybean antioxidant metabolism in response to growth at elevated carbon dioxide and elevated ozone
… carbon dioxide concentration decreased specific components of antioxidant metabolism in the field. I also verified that increasing ozone concentration is highly correlated with increases in the metabolic and genomic components of antioxidant metabolism, regardless of carbon dioxide concentration …
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The role of corporate social responsibility perceptions and perceived employer brand on organisational attractiveness
… attractiveness scale was assessed using Principle Components Analysis (PCA) and calculating Cronbach α coefficients, respectively The data were then analysed using descriptive statistics and a 22 within-subjects Analysis of Variance (ANOVA). To address the second objective, a fractional …
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