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 138 for “"Small sample sizes"”.
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Performance of Number of Factors Procedures in Small Sample Sizes
… factor anaylisis may be accurately performed in samples as small as N = 9. However, all of these studies have extracted a pre-known number of factors, leaving an examination of determining the proper number of factors to future studies. The current study uses examines the following methods for …
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Fault detection in multivariate processes : handling autocorrelation, contamination, and small sample sizes in engineered systems.
… In this work, we explore methods to account for small sample sizes, violations of independence, and contaminated data. In particular, we propose and evaluate non-parametric methods to identify thresholds separating in-control from out-of-control behavior that account for nonnormality and …
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Inferring condition specific regulatory networks with small sample sizes: a case study in bacillus subtilis and infection of mus musculus by the parasite Toxoplasma gondii
… conditions; the second, a set of RNA-seq samples of Mouse (Mus musculus) embryonic fibroblasts (MEFs) infected with different strains of the parasite Toxoplasma gondii. In both cases we infer a subset of the regulatory networks using relatively small sample sizes. For the Bacillus subtilis …
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Fay-Herriot Small Area Estimation in the Survey of Business Owners
This paper will study the use of the Fay-Herriot small area estimation model on the Survey of Business Owners and Self-Employed Persons (SBO) 2002 data. Small area estimation continues to be an important topic as the demand for reliable small area statistics continues to grow. Because direct …
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Evaluation of network inference algorithms and their effects on network analysis for the study of small metabolomic data sets
… Metabolomic disease studies often suffer from small sample sizes and inflated false discovery rates. It is therefore of great importance to identify algorithms best suited for the inference of metabolic networks from small cohort disease studies. For future benchmarking, and for the development …
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Identification of impulsive interference channels
… of the availability of a set of independent samples from the Class A envelope distribution, the problems of basic batch estimation of the Class A parameters, recursive identification of the parameters, and efficient estimation of the parameters for small sample sizes, are investigated. Within …
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A Microgenetic Comparison of Maternal Scaffolding Strategies During Joint Book-Reading by Mothers of Children With and Without Down Syndrome
Although small sample sizes suggest caution in generalizing these results to other samples, they suggest that a child's level of mastery influences appropriate choice of discourse. Instructional strategies that are commonly used in preschool group book-reading are useful for many different …
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Assessing The Dimensionality of Polytomous Item Exams
… HCPND shows more robustness than HCPO-AF to sample size, correlation, and structure complexity. The results also indicate that 70% of data for AT selection is appropriate for all three kinds of tests (dichotomous only, polytomous only, and mixed) with large sample sizes and dichotomous tests …
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Performance of the Kenward-Project when the Covariance Structure is Selected Using AIC and BIC
… AIC was poor for negative pairings of treatment sizes and covariance matrices and small sample sizes. Our study used simulations to investigate Type I error rates in test of fixed effects using Wald statistics with the KR adjustment method, incorporating the selection of the covariance structure …
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Joint distribution of X and X(n) for a random sample from the standard normal distribution with applications to a variables sampling inspection procedure which guarantees acceptance of perfectly screened lots.
… paper, tables of the joint distribution of the sample mean and the largest observation in a sample for a random sample from the standard normal distribution are presented for a variables sampling inspection procedure which guarantees acceptance of perfectly screened lots. The quality of each …
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Guano Rain and Growing Pain: Co-Nesting Dynamics of Double-Crested Cormorants and Black-Crowned Night-Herons at Tommy Thompson Park
… in parameter estimates, potentially due to small sample sizes and ecosystem complexity.
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Allele-Specic QTL fine-mapping with PLASMA
… Applied to RNA-Seq data from 524 kidney tumor samples, PLASMA achieves a greater power at 50 samples than conventional QTL-based ne-mapping at 500 samples: with over 17% of loci ne-mapped to within 5 causal variants compared to 2% by QTL-based ne-mapping, and a 6.9-fold overall reduction in …
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Assessment of pesticide concentrations in environmental and biological parameters from two Kenyan Rift Valley Lakes
… chemicals in African Fish-Eagles are limited to small sample sizes examined in the 1970s and 1980s. This study is the first comprehensive investigation of organochlorine residue contamination in biological and environmental parameters from Lake Naivasha and the control water body at Lake Baringo.
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DISPOSITIONAL EMPLOYABILITY AND THE RELATIONSHIP TO CAREER SUCCESS: A META-ANALYSIS
… were conducted in Excel. The overall sample consisted of 100 effect sizes (r) derived from 41 studies. The total sample size was 45,652. The individuals in these samples were from a wide range of backgrounds that included diverse samples of age, culture, and occupations.</p> <p>The …
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Entry-Level Physical Therapy Students' Knowledge and Attitudes of Nutrition
… in physical therapists and has only included small sample sizes. Therefore, the purpose of the present study was to expand upon the knowledge and attitudes of nutrition in physical therapy students.<strong> </strong>Subjects included doctoral physical therapy students from across the United …
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Organization of Technology at the Sanders Site (45KT315): Analysis of Formed Tools from the Yakima Uplands, WA
… with established regional cultural chronologies. Small sample sizes from the early component and incomplete dating are limitations in this investigation.
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The effect of selected academic development programmes on the academic performance of academic development students at a South African university : an empirical study.
… and internationally has been characterised by small sample sizes and a lack of statistical rigour. Few studies control for the range of independent variables that can affect students’ academic performance, in addition to the academic development programme or course, and the great majority …
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Estimation in truncated distributions
… are many things left to be investigated. Only a small number of distributions have been dealt with, with all multivariate distributions other than the normal lacking any investigation. It is not known how the estimators are affected by small sample sizes, and with the aid of the computer …
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Neural networks as a tool for statistical modeling
… based on designed experiments. Due to the small sample sizes typically employed by response surface designs, the ability of the SHLFNN to accurately approximate the underlying model is questionable. The results of a simulation which compares the performance of the SHLFNN with that of a …
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Trip generation characteristics of rural clinics in West Virginia
… care needs in rural areas. Rural clinics are small health care facilities that serve the primary care needs of rural areas. There are currently no published trip generation rates available for rural clinics. The only rates available are those presented for "clinics" in ITE's Trip Generation …
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