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 7 of 7 for “"Two Part Model"”.
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Statistical models for estimating the intake of nutrients and foods from complex survey data
… Methods: 1) To assess the nutritional status of particular population groups a two-part model with a generalised gamma (GG) distribution was developed for intakes that show high frequencies of zero observations. The two-part model accommodated the sources of data variation of dietary intake with …
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A quantile regression analysis of the conditional female wage distribution in post-apartheid South Africa
… increased economic opportunity for labour market participants. The impact of democratisation on the labour market outcomes of both males and females of various races has been studied extensively in terms of mean earnings. However, because of the heterogenous distribution of South African labour …
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Multivariate Analysis of Dietary Data in the Presence of Excess Zeros and Measurement Error
… research plagued with bias and measurement error partly arising from the use of imperfect methods of dietary data measurement and inadequate data analyses. Some foods or nutrients are consumed habitually, while others are consumed occasionally. This thesis addresses three important public health …
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Patterns of tobacco consumption in Mexico – current perspective
… The data used for the analysis comes from two sweeps of the Mexican Family Life Survey of 2002 and 2005- 2007, a source individual-level data. A two-part model of cigarette demand is estimated. According to the estimation, a number of significant effects are found to determine the overall …
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Folding of stratigraphic layers in ice domes
This dissertation presents a two part model of the formation of recumbent folds in stratigraphic layers of ice sheets such as those in Greenland and Antarctica. The initial disturbances in the stratigraphy have their roots in transient dynamic processes and local rheological inhomogeneities, but …
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Essays on health economics : trans fat policies, commuting, physical activity, and body mass index in the US
… commuting and physical activity to examine two issues. First, to find evidence of causality in this relationship and second, to examine whether this relationship varies by heterogeneity in health status. This work uses a two-part model of time use to examine both physical activity …
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Essays in Microeconomics
… of tournament prizes by employing a novel two-part model which we apply to a unique data set of road running race results. We present a counterfactual example of how a hypothetical change in prizes would be predicted to change race participation and speed.In Chapter 4, in an essay …