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 “"Randomization tests"”.
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Language Use Patterns Associated with Borderline Personality Pathology: A Qualitative and Quantitative Analysis
… language categories. However, approximate randomization tests suggested effect sizes and significant correlations were likely obtained by chance. Additional analyses included participants across the full range of borderline pathology to increase power and generalizability. Quantitative …
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Topics in conditional causal inference
… in complex experimental designs via conditional randomization tests (CRTs). The CRTs we define are randomization tests conditioning on a subset of treatment assignments tailored to the effect of interest. Because many potential outcomes are missing in complex designs, a single CRT is rarely …
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Predictors of white shark Carcharodon carcharias presence at two recreational beaches in a major metropole
… at Muizenberg and 467 at Fish Hoek. I used randomization tests to determine whether the occurrence of shark sightings was randomly distributed across the environmental and biological variables and determined the dependencies between the predictor variables. I confirmed that shark sightings …
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Some Selective Inference and Optimization Methods for Reliable Causal Inference
… assumptions. In this work, we propose 'selective randomization inference' as a general framework for analysing adaptive experiments. In a nutshell, our approach applies conditional post-selection inference to randomization tests. We propose a selective randomization p-value and prove that it both …
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Comparison of Trend Detection Methods
… simulation study. Monte Carlo simulations and randomization tests were employed to construct an empirical sampling distribution for the test statistic under the null hypothesis of no trend. These methods are superior over smoothing methods over other smoothing methods of trend detection with …
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Comparison of Trend Detection Methods
… simulation study. Monte Carlo simulations and randomization tests were employed to construct an empirical sampling distribution for the test statistic under the null hypothesis of no trend. These methods are superior over smoothing methods over other smoothing methods of trend detection with …
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Evaluating the circular order structure and complementary of the Interpersonal Adjectives Scale in rating self and others
… hypothesis were both examined using randomization tests of hypothesized order relations. Results demonstrated support for the circular ordering of the IAS-R in ratings of self and others and provided support for the complementarity of subject's views of themselves and their views of …
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Analysis of Dietary Intake, Body Composition and Biomarkers in Adults with Type 2 Diabetes Mellitus, Prediabetes and Without Diabetes
… biomarkers. Analysis included a series of randomization tests that were conducted to determine possible statistical differences between the mean of basic characteristics (age, BMI, weight, HbA1C, fasting plasma glucose, fasting insulin, triglycerides, LDL, HDL, and total cholesterol levels) …
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Three-mode principal component analysis in designed experiments
… e<sub>kr</sub>. The application is related to tests for nonadditivity in the two-way analysis of variance with noreplication. Three-factor interaction can be assessed for three-way cross classified tables with only one observation per treatment combination. This is done by partitioning the …
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The adaptive benefits of adult structural plasticity in the mushroom bodies of freely behaving forager honey bees
… Category 3). New statistical approaches using randomization tests on distributions of microglomerular volume suggest that the structural differences between the Category 1 and Category 3 brains are very subtle. Microglomerular volume and density changes have been reported to vary with overall …
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Effect of Lion Calls on African Elephants (<i>Loxodonta Africana</i>) in Addo Elephant National Park, South Africa
… played. I analyzed these data using parametric t-tests and non-parametric randomization tests. When no sound was played, elephants did not alter their behavior. Water elicited low levels of distress behaviors. Elephants behaved in a threatened or annoyed manner toward static. Elephants changed …
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Algorithmic Approaches to Nonparametric Causal Inference
… to develop asymptotically valid hypothesis tests for causal effects. The resulting procedure achieves the maximal design sensitivity over a broad class of procedures. Second, we examine the role of feature information in drawing high-precision inferences of effects in completely randomized …
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Evaluating ecological function provided by bank stabilization in Box Canyon Reservoir, WA
… bank strata using general linear models (GLM), randomization tests, and post hoc Tukey's tests. Riprap, the most common type of stabilization in Box Canyon Reservoir, was predominantly found along developed and forested shorelines in downstream reservoir reaches affected by reservoir operations …
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Bioacoustics and reproductive ecology of the damselfish Dascyllus albisella
… synchrony measures were developed and used in randomization tests to test for synchronization of reproduction within five sites in the Johnston Atoll lagoon. Groups of isolated fish spawned in synchrony, but not in synchrony with other groups, even as close as 20-30 m. There was no apparent …
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Evolution of reproductive mode in the scaly-winged bark louse Echmepteryx hageni
… with different root placement. However, outgroup randomization tests cast doubt on the ability of phylogenetic outgroups to accurately root the E. hageni tree. Once the evolutionary relatedness of mitochondrial haplotypes was taken into account via nesting of haplotype groups, measures of …