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 62 for “"Collinearity"”.
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The effects and detection of collinearity in an analysis of covariance
Typescript (photocopy).
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Single digital-photo correction for a GIS application and error analysis
Single digital-photo correction using the collinearity condition equations for a GIS application was investigated by control and test data from digital photos and USGS 1:24,000 topographic maps and by USGS 7.5-minute DEMs of two study areas, Prentiss, North Carolina and Blacksburg, Virginia. The …
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An investigation of the influences of college students' goals on quality of effort and growth during the freshman year
… quality of effort scores introduced multi-collinearity and led to unreliable estimates of the independent effects of the three quality of effort dimensions. The implications of collinearity and other characteristics of the data for interpretation of results were discussed. Regression …
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The group of the Mondello BLT-sets
… points of a Q(4,q) parabolic quadric with a collinearity condition. There are many infinite families of BLT-sets, all of which have had their stabilizers computed except for the Mondello BLT-sets of Penttila. Following an introduction to, and survey of BLT-sets and their related geometries, …
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Active structural acoustic control of double panel systems including hierarchical control approaches
… may reduce the controller complexity and the collinearity issue for large order controllers. This research was initiated by an interest in studying the noise transmission path from the noise field generated by an advanced turboprop engine through the aircraft fuselage and the interior trim …
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Generic camera calibration for omnifocus imaging, depth estimation and a train monitoring system
… solution to linear camera calibration based on collinearity constraint relating the known world points and measured image points assuming no radial distortion. Our second method considers a much simpler case of Gaussian thin-lens imaging model along with non-frontal image sensor and proposes …
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A regression-based approach for simulating feedfoward active noise control, with application to fluid-structure interaction problems
… measurement noise for the regression as a whole. Collinearity, a type of numerical ill-conditioning that can corrupt regression results, is demonstrated to occur in an example feedforward control simulation. The effects of collinearity are discussed, and a basic diagnostic is developed to detect …
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Plant nitrogen availability in selected Virginia soils
… among the different soil N fractions, important collinearity was present and affected the linear models. These effects were reduced by utilizing biased techniques. All the soils provided significant amounts of N to the wheat in both the first and second crops. Exchangeable NH₄⁺-N and NO₃⁻-N were …
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Use of Selected MMPI-A Factors in the Prediction of Clinical Outcomes in a Community-Based Treatment Program for Juvenile Sexual Offenders
… of program compliance. A high degree of collinearity was found between MMPI-A factors, raising questions about their discriminative utility. Results are discussed with regard to the limited utility of the MMPI-A, and factor scores, in making predictions about specific clinical …
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The agronomic and molecular characterisation of Rht8 in hexaploid wheat
… 4.25 Mb on Ae. tauschii 2D. Disruption to micro-collinearity was found with Brachypodium and rice, with better but imperfect collinearity with Ae. tauschii and barley. Rht8 was also anchored to a single IWGSC-2 POPSEQ bin and to a 2.3 cM region in the whole genome shotgun-ordered wheat scaffolds.
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A comparison of three prediction based methods of choosing the ridge regression parameter k
… squares. However, when the condition of multicollinearity exists among the regressor variables, then many qualities of this solution deteriorate. The qualities include the variances, the length, the stability, and the prediction capabilities of the solution. An analysis called ridge regression …
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Non-collinear spin textures in oxides for spintronics and superconducting spintronics
… the possibility of using the magnetic non-collinearity hosted in SrRuO3 to enhance conversion between spin-0 singlet and spin-1 triplet Cooper pairs in an epitaxial oxide ferromagnetic Josephson junction. This starting point has led to four main results: 1. Experiment: anti-ferromagnetic …
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Investigation of membrane permeation using ATR-FTIR spectroscopic imaging and multivariate target factor analysis
… (TFA) in the presence of instrumental noise and collinearity. The results show that QITTFA is robust in the presence of noise levels up to 35 %. The flexibility in the implementation and execution of the QITTFA approaches enabled the analysis of spectroscopic data even with a high degree of …
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Shared Haplotype Length Regression and Its Application
… component analysis to alleviate potential collinearity that might inflate the type I error rate of the statistic.
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Distributions of certain test statistics in multivariate regression
… Their use for detecting outliers, when multi-collinearity is present, is examined.
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Joint Hedonic Travel Cost Method: Combining Revealed and Stated Preference Data to Estimate Demand for Attribute Quality of Sport Fishing in Illinois
… quality data to overcome the problem of multicollinearity and appearance of negative implicit prices. The hedonic travel cost models are specified by combining hedonic price functional forms (linear, semilog) and data types (revealed, stated, pooled data). Prior to the estimation of the joint …
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Determining estuarine seagrass density measures from low altitude multispectral imagery flown by remotely piloted aircraft
… three feature selection options (no selection, collinearity reduction and recursive feature elimination) were assessed for effect on classification performance. The random forest classifier yielded the highest classification accuracy, with no accuracy benefit gained from collinearity reduction …
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