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 93 for “"general linear model"”.
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Effect of organizational environments on the status attainment of students of color and majority students: a general linear model analysis
<p>This study sought to determine if the graduation rates of students of color and majority students at public, research extensive and intensive institutions could be predicted by institutional resource allocation activities in the context of both the internal and external environments of …
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The effects of Junior Great Books literature discussion on reading comprehension achievement of gifted fifth graders: application of general linear model for cross-level inferences
… results were obtained when applying the General Linear Model to individual-level and aggregate-level data. The research was experimental in design. Seventy-eight fifth grade gifted students were randomly assigned to eight groups in two schools, four treatment groups with discussion and …
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Outliers and influence under arbitrary variance
Using a geometric approach to best linear unbiased estimation in the general linear model, the additional sum of squares principle, used to generate decompositions, can be generalized allowing for an efficient treatment of augmented linear models. The notion of the admissibility of a new variable …
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Contributions to the theory of generalized inverses, the linear model and outliers
… at the heart of a number of identities linking generalized inverses of rectangular matrices. These identities give some new insights into reparametrizations of the general linear model, and into the imposition of constraints, when the variance-covariance structure is σ².I. Hypothesis-test …
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Testing the Assumption of Sample Invariance of Item Difficulty Parameters in the Rasch Rating Scale Model
<p>Rasch is a mathematical model that allows researchers to compare data that measure a unidimensional trait or ability (Bond & Fox, 2007). When data fit the Rasch model, it is mathematically proven that the item difficulty estimates are independent of the sample of respondents. The purpose of this …
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Spatio-temporal fMRI signal analysis using information theory
… assumptions of popular approaches based on the general linear model popularized by Friston et al [19941. Here we show that, in addition to the intuitive information-theoretic appeal, such an application of mutual information is equivalent to a hypothesis test when the underlying densities are …
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Assessment of patterns in the Namibian hake fishery based on commercial fisheries data, in relation to environmental factors
… on catch rates (CPUE) is investigated using a general linear model.
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Seismic Response of Structures with Added Viscoelastic Dampers
… that can be effectively used with various models of the viscoelastic dampers to calculate the seismic response of a structure-damper system. To incorporate the mechanical effect from VE dampers in the structural dynamic design, it is important to use a proper force-deformation model to …
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Variations in Phenotypic Plasticity and Fluctuating Asymmetry of Leaf Morphology of Three Quercus (Oak) Species in Response to Environmental Factors
… The data were analyzed using nested ANOVA with General Linear Model. Leaf morphology, plasticity and FA varied across the species and light exposure was the main source of variation. Individual trees and several leaf covariate traits also influenced leaf morphological and FA variations in all …
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Variations in Journey-to-Work Time, Distance and Speed Across Metropolitan Areas
… A statistical framework consisting of the general linear model approach is used. This consists of a regression approach to analysis of variance designs. Both univariate and multivariate models are estimated to examine the variations in travel time, distance, and speed for the …
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Tests for uncharacteristic changes in time series data and the effects of outliers on forecasts
… statistics,methods having been proposed for the general linear model. However, there are very few papers on testing time series data for outliers. The greater part of the thesis is concerned with the effects of outliers on forecasts, statistical methods of detection of outliers and the comparison …
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A CONCEPTUAL FRAMEWORK FOR PROJECT’S TEMPORARY RELATIONSHIPS BETWEEN CONSTRUCTION ORGANISATIONS
… using descriptive statistics. A multi variable general linear model and principal component analysis defined the parameters of the conceptual framework. The findings of this research suggested that buying organisations vary their procurement strategies to reflect supplying firms’ asset …
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Comparison of neural activation in the cerebellum in autistic adolescents with health control adolescents
… using Neuroimaging tool FSL (Smith et al. 2004). General Linear Model was used to test the hypothesis to determine if both groups have any difference in inhibition. Results show that the autistic group has more activation during response inhibition than the control group. This could be because of …
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Stein Estimation and Model Selection
… to use Stein type estimators for statistical model selection purposes. First, a parameter truncation criterion developed in conjunction with the new Stein estimator (Stein, 1981) is used in an orthonormal linear statistical model setting, as a basis for simultaneously selecting the model and …
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Life on a gradient : activity levels of the seastar Patiriella exigua in different abiotic conditions
… from Kalk Bay (South Coast). The results of a general linear model indicated that temperature and dissolved oxygen were significant factors determining righting time of P. exigua with P-values of less than 0.05. AT-test indicated that there was a significant difference between the righting …
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fMRI detection with spatial regularization
… voxel-by-voxel detectors, paired T-test and General Linear Model (GLM) are the most popular. The Mutual Information (MI) based detector has recently been introduced. It is interesting to compare these three detectors' modeling assumptions, as well as their performance, in order to understand …
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Detection power, temporal response, and spatial resolution of IRON fMRI in awake, behaving monkeys at 3 Tesla
… of neuroimaging within this important animal model. The injection of the iron oxide contrast agent (MION) provided a 9-fold increase in efficiency for block designs relatively to BOLD contrast. Because the hemodynamic response function acts as a low-pass filter on neural activation to …
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A decision support tool for preliminary system design
… design space and determining a cut-off point. A general system model is presented based on the top-down design methodology. A decision process is applied to the lowest level functions of the system model to order the allocation design space. The methods explored to perform decisions are the …
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Samanburður á kartöfluyrkjum og mismunandi staðsetningu flýtiáburðar
… tvíþátta ferkvikagreining á línulegu módeli (General Linear Model) auk Pearson fylgnigreiningar. Markmið tilraunarinnar var að komast að því hvort mismunur væri á uppskeru að magni og gæðum eftir kartöfluyrkjum og áburðarliðum. Auk þess fól tilraunin í sér að kanna hvort eitthvað af erlendu …
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Comparison of the incidence of sexual victimization and sexual aggressiveness among Greek affiliated and nongreek affiliated undergraduate students
… The data were analyzed using four separate general linear model procedures, one for each dependent variable. Results found significant differences for both gender and Greek affiliation for sexual victimization, sexual victimization with alcohol involved, and sexual aggressiveness. Gender was …
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