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 23 for “"tobit model"”.
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Adoption of Renewable Portfolio Standards in the United States: Which Factors Matter?
… non-trivial fraction of the population. Thus, a Tobit model was used for the analysis. Results indicate that the Tobit model yields a valid representation of the data. For comparison, a model based on an OLS has also been estimated and its results are in agreement with those obtained for the …
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The Impact of Groundnut Production and Marketing Decisions upon Household Food Security Among Smallholder Farmers in Sub-Saharan Africa: Does Gender Matter?
… decisions. Apart from the OLS regression, a tobit model is employed to estimate the gender effects on household marketing decisions, examining both the decision to participate in a market and the decision concerning the amount to market. Cash cropping decisions are found to play no role in …
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An analysis of the U.S. meat industry from consumers' and processors’ points of view
… meat. This goal was achieved with two economic models. The first was a Probit model to understand the likelihood of a consumer choosing to purchase meat as a portion of a carcass. The second was a bivariate Tobit model that was used to directly compare consumer purchasing levels between local …
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Factors influencing the adoption of soil conservation practices in Virginia's Piedmont Bright Leaf Erosion Control Area
… of farmers from two counties in Virginia, two models of conservation adoption are estimated. First a Tobit model of expenditures for conservation practices exclusive of conservation tillage is estimated. Second, conservation tillage adoption is considered in a Tobit model of conservation …
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Smallholder market access: the case of groundnut sector in Malawi
… groundnut market channels. Finally, a Selective Tobit model was used to assess factors that influence smallholder farmers to adopt technologies on quality management and decide the extent of adoption. The study results indicated that smallholder farmers manage to sell all their groundnuts brought …
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General methods for analyzing bounded proportion data
This thesis introduces two general classes of models for analyzing proportion response variable when the response variable Y can take values between zero and one, inclusive of zero and/or one. The models are inflated GAMLSS model and generalized Tobit GAMLSS model. The inflated GAMLSS model extends …
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Effects Of E85 Fueling Stations And State Incentives On Private Flex Fuel Vehicle Demand
… and tax exemption. Using fixed-effects linear model, random-effects tobit model, and fixed-effects instrumental variable model with fueling station incentives and government FFV fleet incentives as instruments, the results confirmed that increasing the density of E85 fueling stations leads to …
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Three Essays on the Spatial Autoregressive Model in Spatial Econometrics
The spatial autoregressive model (SAR) is a standard tool to analyze spatial data. It is of great interest in econometrics because it has a game structure and, therefore, can be interpreted as a reaction function: the outcome or behavior of observations at one location is directly affected by those …
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Understanding the impact of gambling with special reference to Thailand
… participation and gambling expenditure. A Logit model is then used to estimate the participation of gambling. The results suggest that the number games, such as the government lottery, the underground lottery, are popular among old gamblers whereas football betting is popular for adolescents. In …
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The Effects of State Constitutional Design of Gubernatorial and Legislative Authority in State Budget Policy
… design of formal authority. Based on Tobit model estimation and predicted values of divergence derived from alternative constitutional design scenarios, some state constitutional factors affect the ability of governors and state legislatures to achieve preferred policy alternatives. …
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Three essays on the labor allocation decisions of the modern farm family
… estimate off-farm labor supply using a bivariate tobit model. The data used in this research is from 2006-2008 Agricultural Resource Management Survey (ARMS). The results of this study show that the off-farm labor supply of the operator and spouse is positively correlated and that there is a …
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Does U.S. food aid have disincentive effects on local food production?
… of food aid allocation using a random effects tobit model, and provides policy-makers causal evidence of the average effects of food aid on food production. To address reverse causality between food aid and local production, we adopt the instrumental variable method as the identification …
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Determinants of Post-Harvest Handling Practices and Technologies Harnessed by Smallholder Fruit Crop Farmers in Vhembe District, Limpopo Province, South Africa
… analysed using descriptive statistics and the Tobit regression model. The data analysis results, with direct implications for policymakers and organisations, reveal a predominance of male farmers (63.8%), with significant engagement in agriculture (84.4%) and high land ownership (95.5%). …
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A study of corruption in transition countries
… in chapter 2, we obtain mixed results. Using a tobit model, we find evidence that corruption "greases the wheels" of physical investment but has no significant effect on the level of R&D investment. However, results from a probit model suggest that corruption does negatively impact whether or …
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Health and Environmental Benefits of Reduced Pesticide Use in Uganda: An Experimental Economics Analysis
… sessions in Kampala and Iganga districts. Tobit model results indicate that subjects place significant positive values to avoid ill health outcomes, although these values vary by region, by treatment and by socio-economic characteristics. Gender differences were important in explaining …
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An analysis of maize trade in the Southern African Development Community
… on maize trade. The study makes use of a gravity model to estimate the value of trade; specifically a Tobit model with random effects by Maximum Likelihood Estimation. The partner country population was found to have a positive effect (0.749) on maize trade at 5% level of significance. This …
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The economics of alcohol : a collection of essays
… 3 uses several different methods including the Tobit and Double-Hurdle models to estimate the mean price elasticity of demand for alcohol. In doing so, it tests how the price elasticity estimates can differ depending on model choice, even when the same data is used. Household expenditure data …
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Rural Credit Markets in Ethiopia: Coexistence, Persistence, and Demand
… and lend. Who are these households? Panel logit model is estimated for the sub-sample of borrowers and lenders. The result suggests that households that simultaneously borrows and lends are relatively better-off households. The probability of being a simultaneous borrower and lender is higher for …
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The Economics of Tobacco Production and Feasible Alternatives in Uganda
… the study area. The study developed a bivariate model to examine economic and noneconomic incentives to tobacco supply. Relative farm efficiencies are examined with data envelopment analysis. A Tobit model is further used to estimate farm inefficiency among tobacco and other farm households. The …
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