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 44 for “"Multivariate statistical analyses"”.
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Ultimate Compression After Impact Load Prediction in Graphite/Epoxy Coupons Using Neural Network and Multivariate Statistical Analyses
… self-organizing map (SOM) neural network and multivariate statistical regression analysis (MSRA). An optimized use of these data treatment tools allowed the generation of a simple, physically understandable equation that predicts the ultimate failure load of an impacted damaged coupon based …
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Investigation of Chicago Air Pollution and Meteorological Influence on Pollution Development: Physical Measurements and Multivariate Statistical Analyses
… 2002-2004 and 2010-2012. Both methods uncovered multivariate relationships between pollutant-pollutant and pollutant-meteorological variables. With this information, a better understanding of the complex nature of pollutants and their dependence on meteorology was achieved.</p>
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Quantitative palynological analyses of Albian-Cenomanian (Lower to Upper Cretaceous) strata in the Sverdrup Basin: Insights into paleoecology, paleoclimatology and palynostratigraphy
Multivariate statistical analyses of terrestrial palynomorphs from Albian to Cenomanian (Lower to Upper Cretaceous), Sverdrup Basin strata reveal a landscape with wet lowlands inhabited by Pteridophytina and Bryophyta, with cooler, moist uplands inhabited by a variety of conifer plants. A humid and …
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Interpreting Prehistoric Patterns: Site Catchment Analysis in the Upper Trinity River Basin of North Central Texas
… Incorporating archaeological data into catchment analyses is an effective strategy to develop regional models of prehistoric site selection and settlement patterns. Digital access to data permits the incorporation of multiple layers of information into the process of synthesizing regional …
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Multivariate Statistical Analysis of Three Crania Housed at the University of Montana Physical Anthropology Lab
… of Montana Physical Anthropology Lab, using multivariate statistical analyses. A database collected by Dr. Hanihara and another collected by researchers at the University of Michigan were used for comparative purposes. Multiple populations from both databases were chosen so as to be …
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Multivariate Statistical Analysis of Three Crania Housed at the University of Montana Physical Anthropology Lab
… of Montana Physical Anthropology Lab, using multivariate statistical analyses. A database collected by Dr. Hanihara and another collected by researchers at the University of Michigan were used for comparative purposes. Multiple populations from both databases were chosen so as to be …
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Toward an Understanding of Interindividual Variation in Hydrogenotrophic Microbes in the Human Colon
… using PCR-based methods. Inferential and multivariate statistical analyses revealed that SRB populations in NA are more homogenous than in AA and that SRB communities in NA are distinguishable from those in AA and CA. Also, it was revealed that the African groups, NA and AA, harbor …
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Women's *Labeling of Unwanted Sexual Experiences With Dating Partners: Measurement and Conceptual Issues
… As hypothesized, the results of a variety of multivariate statistical analyses indicated that it is the severity of unwanted sexual experiences, and not labeling, that predicts distress. These results suggest that labeling cannot be considered a valid criterion for determining who has …
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Prehistoric cranial variation in Papua New Guinea
… collections -isalso presented. Univariate and multivariate statistical analyses of the metric data indicate that the populations of the Central Highlands and Highlands Fringe have been biologically isolated from coastal and lowland regions for a substantial period of time. The demonstration of …
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Prehistoric cranial variation in Papua New Guinea
… collections -isalso presented. Univariate and multivariate statistical analyses of the metric data indicate that the populations of the Central Highlands and Highlands Fringe have been biologically isolated from coastal and lowland regions for a substantial period of time. The demonstration of …
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Crustacea Zooplankton Communities in Icelandic Lakes Comparison Over Time
… (1992–1998) and the Natura Project (2012–2013). Multivariate statistical analyses were applied to assess temporal changes in diversity and composition and to evaluate the influence of environmental variables, including geological variables, spatial gradients, and nutrient concentrations. …
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Cranial remains from the graveyard to the laboratory: restoration, conservation and craniometric analysis of medieval British skeletal samples
… data from 946 individuals were analysed with multivariate statistical analyses. A selection of 18 variables was used for comparison among samples. A further comparison with a selection from Howells’ main human groups was carried out. Discriminant function analysis, principal component analysis …
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Soil quality in long-term corn and soybean rotations
… 0-15, 15-30, 30-60, and 60-90 cm. Univariate and multivariate statistical analyses were conducted, including stepwise selection and canonical discriminant analysis (CDA). These approaches helped to clearly separate and identify locations, reflecting the different soil types and environments at …
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The Immigrant-Criminality Paradox: A Macro-Level Analysis of the Relationship Between Immigration and Violent Crime in San Antonio, Texas
… and violent crime would be present. Spatial analyses were conducted in addition to hierarchical regression analyses and correlation analyses to determine the relationships between Mexican-Immigrant concentration, violent crime, and concentrated disadvantage. While the spatial analyses …
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Content representation in the human medial temporal lobe
… To go beyond this limited approach, we employed multivariate statistical analyses that takes into account how event content is represented by distributed activity in MTL subregions. First, we examine the content-specific contributions of MTL subregions to episodic encoding and retrieval. Then, we …
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Benthic Community Analysis of Hog Island Bay, Virginia
… physical processes acting along a coastal zone. Multivariate statistical analyses reveal a community spatial pattern not unlike other temperate estuaries. Outside of a sharp community transition existing in the vicinity of Great Machipongo Inlet, benthic assemblages throughout the study area …
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The chemical analysis of ceramic fabrics from medieval Dorset and its region.
… Spectrophotometry for a suite of ten elements. Statistical analyses confirmed that the two groups of kiln products could be separated using data from very few elements, and so a smaller suite of the four 'best discriminators' was identified.A detailed study of the medieval ceramics found in …
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Spatial Variability of Metals and Organic Carbon In Salt Marsh Sediment
… older sediment originally from the mature marsh. Multivariate statistical analyses reveal that older marsh and newer marsh have different controls on sediment metal distribution. Metal distribution in older marsh is significantly influenced by distance to creek, distance to subtidal channel and …
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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
… were obtained for each paleontological sample. Multivariate 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. …
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Application of Multivariate Statistical Methodology to Model Factors Influencing Fate and Transport of Fecal Pollution in Surface Waters
… were measured and the data were analyzed using multivariate statistical methods to identify those parameters influencing pathogen fate and transport. Physical, chemical, and microbial water and soil properties were also characterized along Sinking Creek to determine their influences on the …
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