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 12 of 12 for “"Duration models"”.
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Estimação clássica e Bayesiana em modelos de sobrevida com fração de cura
In Survival Analysis, long duration models allow for the estimation of the healing fraction, which represents a portion of the population immune to the event of interest. Here we address classical and Bayesian estimation based on mixture models and promotion time models, using different …
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Two Applied Economics Essays: Trade Duration in U.S. Fresh Fruit and Vegetable Imports & Goods-Time Elasticity of Substitution in Household Food Production for SNAP participants and nonparticipants
… study investigates the factors that impact the duration of U.S. fresh fruit and vegetable imports. We employ both survival analysis (Kaplan Meier estimates and Cox proportional hazards model) as well as count data models. Our results indicate that SPS treatment requirements positively impact the …
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A "permanent" high-temperature superconducting magnet operated in thermal communication with a mass of solid nitrogen
… a magnetic field is maintained for a useful duration. Models are developed to predict the experimental system's warming trend and magnetic field decay. The models are validated with a good agreement between simulations based on these models and experimental results. Potential performance …
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Bayesian time series models and scalable inference
With large and growing datasets and complex models, there is an increasing need for scalable Bayesian inference. We describe two lines of work to address this need. In the first part, we develop new algorithms for inference in hierarchical Bayesian time series models based on the hidden Markov …
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Three papers on the behavior modeling of the shrimp fishermen in the Gulf of Mexico
… heterogeneity into the location choice and duration models corrects the potential biasedness in estimates and improves the goodness-of-fit considerably, aside from provides intuitive economic interpretations.
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Homeownership And Unemployment: Outcomes And Implications
… as instrument for homeownership. I also estimate models at the individual level. Regression results show that homeownership is negatively and significantly related to unemployment confirming the theoretical predictions. These results are robust to different estimation methods and specifications. …
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Essays on the dynamics of qualitative aspects of firms' behavior
… techniques are employed, which include Poisson models, structural form models and duration models. Our findings show that observable characteristics of the individual firms are important in understanding the dynamics of firm's attrition. Cyclical effects and macroeconomic variables have also a …
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Three Essays on the Quality of Marriage
… between domestic violence and marriage duration. Using a representative sample of Peru's female population between 15 and 49 years old, I find that domestic violence may increase the hazard of divorce. Moreover, I find that the change in the hazard varies over time, increasing …
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The socioeconomic impacts of the Superfund program
The student, Alexander Stevens, submitted this Dissertation for approval on 2019-07-08 at 10:48.
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Labor Force Participation and Crime among Serious and Violent Former Prisoners
… After balancing respondents, this study employs duration models to test the effects of educational and employment programming on time to rearrest.Second, this study tests whether financial problems mediate the work-crime relationship. Longitudinal structural equation modeling is used to model …
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Three Essays on Adoption and Impact of Agricultural Technology in Bangladesh
… timing of IPM adoption in Bangladesh. It employs duration models, fully parametric and semiparametric, and (i) compares results from different estimation methods to provide the best model for the data, and (ii) identifies factors that affect the length of time before Bangladeshi farmers adopt an …
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Three essays on family structure and school dropout among adolescents
… endogeneity by using family fixed effects models on these pairs, and also by implementing instrumental variables technique. I exploit the older sibling’s specific characteristics as an instrumental variable for his outcome in the younger sibling's equation. The sibling specific …