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 17 of 17 for “"Procrustes analysis"”.
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Defining and understanding the role of cofaqs in teacher education : a multiphase sequential exploratory mixed methods hermeneutic study
… group interviews analyzed using grounded theory analysis, repertory grid interviews analyzed through Generalized Procrustes Analysis and Principal Components Analysis, and semi-structured interviews analyzed thematically. Findings indicate the importance of relationship in developing teacher …
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Measurement Error Models in Shape Analysis
… with the problem of measurement error in shape analysis, especially in the Procrustes matching of shapes. Shape data are often prone to measurement error due to the wide sources of errors. In traditional shape analysis measurement error is usually not considered, but ignoring measurement error …
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Statistical Shape Analysis for the Human Back
In this research, Procrustes and Euclidean distance matrix analysis (EDMA) have been investigated for analysing the three-dimensional shape and form of the human back. Procrustes analysis is used to distinguish deformed backs from normal backs. EDMA is used to locate the changes occurring on the …
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Metricizing' non-metric craniofacial traits: Application of three dimensional geometric morphometric analysis to ancestral identification
… Nubia, and Modern India). Principal Components Analysis confirmed that geographic groupings could be identified, while Procrustes Analysis and Thin-Plate Splines were used to assess the nature of form variation within and between groups. Discriminant functions calculated the probability of …
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Forensic facial reconstruction using 3-D computer graphics: evaluation and improvement of its reliability in identification
… as radiographic and/or dental comparisons, DNA analysis or other means, to establish positive identification. The advantages of the computerised method over the manual clay reconstruction are speed, rapid editing capability, production of images that can be stored and reconstructions repeated at …
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Development of evaluation method for visual design with multivariate statistical techniques
… multivariate statistical techniques for the analysis, visualization and interpretation of the resulting data. The suitability of the approach for visual interface design evaluation has been explored in four case studies involving overall 149 participants judging 51 websites. In each case …
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Understanding methods for internal and external preference mapping and clustering in sensory analysis
… must answer before choosing a method of analysis: 1) are the different methods providing the same interpretation, co-ordinate values and object orientation; and 2) which method and program should be used with the data provided? This research used data from paint, milk and fragrance …
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Using 3-D Geometric Morphometric Techniques to Further Understand the Relationship Between Neanderthals and Homo sapiens
… explore this issue by conducting a quantitative analysis on several aspects of morphological variation evident in crania of Neanderthals and Homo sapiens. Cranial landmarks were digitized on the cranial vault (cranial vault analysis) and midfacial area (alpha triangulation analysis) of the …
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Investigation of Craniofacial Morphological Variation at Sully (39SL4)
… translated, rotated, and scaled via generalized Procrustes analysis permitting the inclusion of both males and females in the samples and fitted coordinates were subjected to principal component analysis. The resulting principal components were used as variables in three tests of homogeneity: …
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Using 3-D Geometric Morphometric Techniques to Further Understand the Relationship Between Neanderthals and Homo sapiens
… explore this issue by conducting a quantitative analysis on several aspects of morphological variation evident in crania of Neanderthals and Homo sapiens. Cranial landmarks were digitized on the cranial vault (cranial vault analysis) and midfacial area (alpha triangulation analysis) of the …
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Investigation of Craniofacial Morphological Variation at Sully (39SL4)
… translated, rotated, and scaled via generalized Procrustes analysis permitting the inclusion of both males and females in the samples and fitted coordinates were subjected to principal component analysis. The resulting principal components were used as variables in three tests of homogeneity: …
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The evolution and diversification of Pleistocene Homo
… theory, Mahalanobis' distances, Generalised Procrustes Analysis, and Euclidean Distance Matrix Analysis. The results of these analyses emphasise the importance of neutral evolutionary forces in shaping morphological diversity during the evolution of Homo. However, they also indicate that …
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A shape analysis approach to prediction of bone stiffness using FEXI
… the spatial distribution of bone. Finite element analysis can be performed in both two and three dimensions, and predicts the deformation or induced stress when a load is applied to a structure (such as a bone) of defined material composition and shape. The simulation of a mechanical compression …
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An investigation into the use of stereophotogrammetry for the analysis of craniofacial dysmorphology in schizophrenia
… in 3D coordinate space. Geometric morphometric analysis - particularly generalised Procrustes analysis and principal component analysis - was carried out on these landmark sets. Discriminant Function Analysis was applied to identify discriminating features in the data set, and classification …
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Time-Averaging and Morphology: Variability in Modern Populations and Fossil Assemblages of Mercenaria (Bivalvia)
… variability was calculated using Least Squares Procrustes Analysis. Once corrections were made for allometry, the variabilities of the samples drawn from single time-averaged fossil beds were indistinguishable from the variabilities of the recent samples. For this data set, the variabilities of …
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3D Morphable Models: Data Pre-Processing, Statistical Analysis and Fitting
… how the tools of thin-plate spline warping and Procrustes analysis can be used to construct a morphable model as a shape space. We observe that the distribution of parameter vector lengths follows a chi-square distribution and discuss how the parameters of this distribution can be used as a …
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Late glacial to Holocene climate and vegetation changes on the Tibetan Plateau inferred from fossil pollen records in lacustrine sediments
… monsoon indices estimated using the NCEP/NCAR Reanalysis data from the last 50 years, which indicate a significant negative correlation between the two summer monsoon subsystems. By analogy with the early Holocene, intensification of the ISM during coming decades could lead to increased …