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 “"nonnormal"”.
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On Approximation and Optimal Control of Nonnormal Distributed Parameter Systems
… attention has been directed toward studying the nonnormality of linearized problems and developing convergent numerical schemes for simulation of these sytems. Numerical schemes for optimal control problems often require additional properties that may not be necessary for simulation; these …
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Alternative estimation methods in structural equation modeling with LISREL-7: Effects of noncontinuity and nonnormality of variables with varying sample sizes
… of variables--continuous-normal, continuous-nonnormal, discrete-normal, and discrete-nonnormal--and their appropriate input matrices were used.
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Sensitivity to Distributional Assumptions in Estimation of the ODP Thresholding Function
… of this method to detection of significant but nonnormal data. Overall, estimation of the ODP with the method described in this thesis is satisfactory, except when the nonnormal alternative distribution has high variance and expectation only one standard deviation away from the null distribution.
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The Efficacy Of Select Nonparametric And Distribution-Free Research Methods: Examining The Case Of Concomitant Heteroscedasticity And Effect Of Treatment
… of these procedures deteriorates under nonnormal distributions. Compared to parametric procedures, nonparametric and distribution-free research methods make minimal assumptions about underlying population data. They are robust to departures from parametric assumptions, and hold distinct …
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New control charts for monitoring univariate autocorrelated processes and high-dimensional profiles
… those charts are applied to processes exhibiting nonnormal responses or correlation between successive responses. In particular, we incorporate the two estimators into DFTC-VE, a new distribution-free tabular CUSUM chart developed for autocorrelated processes; and we compare its performance with …
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A causal comparative factorial analysis of factors affecting service level agreements in a U.S. Navy enterprise information systems network
… at least one SLA. Checks for normality indicate nonnormal behavior for most data sets. The results, conclusions, and recommendations have been provided to Navy service level managers to improve the system.</p>
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Moment Matching and Modal Truncation for Linear Systems
… algorithm disappoints in the context of highly nonnormal semi-discrete convection-diffusion equations. There, moment matching can be ineffective in dimension reduction, precluding a cost-effective modal filtering step.
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Techniques for orientation independent gait analysis
… are examined and found to perform poorly with nonnormal orientation. The complex detail used for recognition can not be translated between orientations in a holistic silhouette manner. It is shown that orientation independent features can be extracted using a human model. The algorithm is …
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Descriptive Statistical Attributes Of Special Education Datasets
… measures. All the distributions were found to be nonnormal at alpha = .01. Micceri indicated three factors that might contribute to a non-Gaussian error distribution in the population. The first factor is subpopulations within a target population. The second factor is ceiling effects and the third …
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An efficient technique for structural reliability with applications
… of design variables and correlated as well as nonnormal random variables. When compared with analytical results, the method has shown excellent agreement. The technique contains a sensitivity analysis scheme which can be used to reduce the computation time resulting in nearly the same accuracy. …
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The Unified Approach for Model Evaluation in Structural Equation Modeling
… The extensions of the unified approach for nonnormal distribution, missing data, or nested model comparison are provided.
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A Measurement of Readiness for Tennessee Hospitals to Implement “Meaningful Use” Criteria Resulting from the American Recovery and Reinvestment Act, 2009
… two tailed.</p><p>To ensure that the slightly nonnormal distribution of the readiness scores did not explain the difference found with the t-test, an additional nonparametric test was also conducted. The Mann Whitney U-test showed that even with the assumption of a normal distribution is not …
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Partitioning market efficiencies by analyst attention: the case of annual earnings announcements
… years ended 1976 through 1982. Owing to the nonnormal distributional properties of the inefficiency metrics, two nonparametric procedures are employed to detect group mean differences. The results overwhelmingly indicate that both pre- and postannouncement efficiency are positively associated …
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Statistical process control by quantile approach.
… the data is normal, if in reality, the data is nonnormal, then it will provide an inaccurate results.Schilling and Nelson has (1976) investigated under the central limit theory, the effect of non-normality on charts and concluded that the non-normality is usually not a problem for subgroup sizes …
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Flight deck engineering: impact of flight deck crew alerting and information systems on English as a second language flight crewmembers performance in airline flight operations
… by ESL flight crewmembers during aircraft nonnormal conditions. English as-a-second language flight crewmembers indicated they often experience problems executing written English language technical procedures after outset of crew alerts. Conversely, experimental trials revealed ESL flight …
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Stochastic dynamics in spatially extended physical and biological systems
… (2) the amplification effect of nonnormality on stochastic Turing patterns in reaction diffusion systems, and (3) the velocity statistics of edge dislocations in plastic deformation of crystalline material. In Part I, I present a new model for the origin of homochirality, the …
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Processing and characterization of ceramic superconductor/polymer composites
… to absorb electromagnetic waves and 2) that the nonnormal volumes of the superconducting phase overlap. Thus, a superconductor/polymer 0-3 composite can not provide any shielding, but a superconductor/polymer 2-3 composite shields at both low frequencies and microwave frequencies.