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 13 of 13 for “"stepwise selection"”.
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Financial characteristics of takeover targets in the gaming industry
… variable of this study is dichotomous. By the stepwise selection procedure, six variables were identified in this study. These include size, profitability, liquidity, leverage, capital expenditure, cash reserve capacity, operational efficiency and returns on invested capital. The takeover …
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Soil quality in long-term corn and soybean rotations
… statistical analyses were conducted, including stepwise selection and canonical discriminant analysis (CDA). These approaches helped to clearly separate and identify locations, reflecting the different soil types and environments at each site. Crop rotations had little to no discernible effect …
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Cost Modeling Based on Support Vector Regression for Complex Products During the Early Design Phases
… drivers: Causal-Associated (CA) method and Tabu-Stepwise selection approach. The CA method increases understanding and explanation of the cost analysis and helps avoid missing some cost drivers. The Tabu-Stepwise selection approach is used to select significant cost drivers and eliminate …
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Prediction of Compensated Liver Cirrhosis by Ultrasonography and Routine Blood Tests in Patients with Chronic Viral Hepatitis
… RESULTS: Discriminant analysis with forward stepwise selection of the variables showed that liver surface nodularity, platelet count, and albumin level were independently associated with compensated liver cirrhosis (p<0.05). Cross-tabulation revealed that the following 4 variables had > 95% …
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Optimal and sequential design for bridge regression with application in organic chemistry
… by more commonly used methods of variable selection, such as subset selection and stepwise selection. Models including two-way product, or interaction, terms are also considered. A general method is developed for the selection of an optimal design when accurate estimates of the model …
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Influence of performance and genetic data on the sale price of seedstock bulls
… economic value (pricing) of candidates for selection. This study evaluates the association between the information provided to bull buyers at time of sale and prices paid for bulls sold by two large seedstock operations located in Kansas (KS Ranch) and Colorado (CO Ranch). Data were gathered …
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An Analysis of Wind Power Plant Site Prospecting in the Central United States
… installation lead time, but also reduces site selection expenses and provides faster reductions of greenhouse gas emissions. Combining conventional predictor variables, such as wind strength and proximity to transmission lines, with nonconventional socioeconomic and demographic predictor …
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What Text Information Helps to Reduce Default Risk
… algorithms, including forward and backward stepwise selection and random forests, to rank the importance of various factors in predicting loan default.</p> <p>By including text information, this paper improves the accuracy of predicting the relationship between a borrower's ability to repay …
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Intestinal absorption barriers as modelled by p-glycoprotein and cytochrome p450 a34 in caco2 cells
… Caco-2 cells have been developed through stepwise selection of the cells with doxonibicin. This newly-developed cell line (hereafter referred to as Type I) possesses approximately twice as much P-gp protein than non-exposed cells, restricts the transepithelial transport of vincristine in …
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ROCK2 Polymorphism in Patients with Vasospastic Angina
… compared in control and VA groups by forward stepwise selection. Results: The prevalence of genotypes of the five interesting SNPs in patients with VA was not different from that in the control group. Among the coronary risk factors, including age, sex, dyslipidemia, hypertension, diabetes and …
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A stepwise test characteristic curve method to detect item parameter drift
… as close as possible. This paper introduces a stepwise test characteristic curve (Stepwise TCC) method to dynamically detect item parameter drift based on TCC without requirement to set any critical values. Comparisons were made between the new method and two commonly used existing methods …
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Three Essays on the Evolution of the Determinants of Educational Attainment and its Consequences
The dissertation focuses on the different determinants of education, their effects on the educational outcome, and the overall effect of education on the lifetime consequences. The first chapter focuses on the inequality of educational opportunity across different demographic factors. This chapter …
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Estimation Of Hybrid Models For Real-time Crash Risk Assessment On Freeways
… matched case control logistic regression. The stepwise selection procedure yielded the matched logistic regression model indicating the difference between average speeds upstream and downstream as significant. Even though the model provided good interpretation, its classification accuracy over …