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 82 for “"Heckman"”.
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Duistermaat-Heckman measures for Hamiltonian groupoid actions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Enabling the use of unstable, hazardous reagents with continuous flow synthesis
… 2-alkenyl-N-formylanilines. Laurel M. Heckman and Dr. Zhi He contributed equally to initial reaction investigation. Z.H. carried out the arylboronic acid scope. L. M. H. carried out reaction optimization, isocyanide scope and reactions in continuous flow. [chemical formula] Despite its …
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Peruvian Food Insecurity in The Face of Recurrent Natural Disasters: A Two-Step Adoption Analysis for Improved Potato Varieties
… model, adoption and dis-adoption, by utilizing a Heckman Probit model to demonstrate two-steps of the adoption process. The Heckman Probit model was used to analyze variables affecting adoption and dis-adoption of improved varieties. Results suggest that adoption is region specific, time …
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Multivariate nonparametric estimation on censored panel data
Heckman and Singer (1984) argued that in typical longitudinal analyses, standard treatments of heterogeneity components result in incorrect parameterization of the duration model. As a consequence, estimation bias is not limited to duration dependence, but extends to the structural parameters as …
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Essay on labour supply in transition economies.
… ve transition economies. Employing the modifi ed Heckman estimation procedure the study fi nds positive and modest wage elasticities of labour supply in all the countries reviewed. This finding is consistent with stylized fact that those countries which inherited high labor force participation …
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The Political Economy of Organizational Expansion. Finding the Link Between Insider and Outsider in the European Union
… two stages. I test this theory by utilizing a Heckman-Probit-Selection Model, which accounts for this two-stage procedure. The results confirm that conditions are important to avoid costs in the process of expansion.
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Complexity One Hamiltonian SU(2) and SO(3) Actions
… isomorphic if and only if (1) their Duistermaat-Heckman functions coincide; (2) their isotropy data and genus at 0 are the same; (3) if the zero fibers are tall with principal isotropy group S1, the first Stiefel-Whitney classes of phi-1(0) and phi '-1(0) in H1( Mreg0;Z2 ) and H1 ( M'reg0;Z2 ) …
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Estimación cuantílica de la brecha salarial de género en Argentina corregida por sesgo de selección
… regresiones que corrigen el sesgo de selección (Heckman) típicamente encontrado en este tipo de análisis. Los resultados indican que dicha brecha se ubica en el 15.46% para el modelo de regresión tradicional (MCC), 12.77% para el modelo de regresiones por cuantiles sobre la mediana, 14.62% para …
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Impact of Migration on Welfare of Migrant Sending Households in Selected Rural Areas of Zimbabwe
… a Counterfactual approach and utilized two stage Heckman selection model to control for selection bias. The results indicated that on average, migration impacts household welfare positively but the welfare gains are not evenly distributed among households. Overall, the welfare of households with …
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A transaction costs explanation of inter-local government collaboration.
… collaborate in the second stage. Utilizing a Heckman model of this two-stage process, I find broad support for a number of variables that measure each of these theoretical constructs.
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Human Rights and the Strategic Use of US Foreign Food Aid
… food aid, is supported by results from a Heckman model. This procedure models the two-stage decision-making process where foreign policymakers first, select countries for aid and then, distribute aid to those selected.
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The Impact of Bankruptcy Exemptions for Retirement Assets
… risk. To address our hypothesis, we run a Heckman model on the Survey of Consumer Finances data. Our results provide evidence to match our theory for only highly educated or financially sophisticated individuals, conditional on owning retirement assets. That is, we observe highly educated …
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Racial differences in households' financial asset allocation, 1992-2004
… cash account and other financial asset. Based on Heckman Selection model, the probability of having each financial asset category and the ratio of financial asset invested in each category were regressed on year, race, other demographic variables (age, education, gender, marital status and number …
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Penalties for Foodborne Illness: Jury Decisions and Awards in Foodborne Illness Lawsuits
… and received a median award of $32,264. The Heckman two-step estimation procedure was used to examine the effects of various factors on plaintiff success rates and subsequent amounts awarded. Plaintiff chances of victory increased if lawsuits involved a child, foodborne pathogen was …
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Bildungsrenditen in Deutschland
… in die Analyse mit ein, so erweist sich das Heckman-Verfahren als sehr geeignet. Die Analyse - zunächst auf nationaler Ebene - bestätigt weitestgehend die bestehenden Erkenntnisse der Literatur. Eine Separierung des Datensatzes auf verschiedene Alterscluster, Voll- und Teilerwerbstätige sowie …
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Essays on Migration, Remittance and Households Consumption, Production and Investment Decision: Evidence from Bangladesh
… motive for remittances. We find that the Heckman selection estimation is asymptotically consistent for the sample and insurance model is nested in the altruistic model of remittance. In chapter four, we use the Heckman selection, multinomial logit, and three-stage least square estimations …
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Fractional Chromatic Numbers and Spectra of Graphs
… graphs with maximum degree at most three, Heckman and Thomas conjectured that $\chi_f(G) \leq 3-\frac{1}{5}$ if $G$ is triangle-free and has maximum degree at most three. Since the fractional chromatic number of the generalized Peterson graph $P(7,2)$ is $3-\frac{1}{5}$, the conjecture is …
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Alcohol income and health: a complicated but desirable mix
… because of their personal characteristics (Heckman, 1979; Zhang, 2004). In relation to alcohol consumption, selection bias may arise as people may select into a particular drinker group due to the fact that they know that by doing so it will not have a negative effect on their income or …
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Desempleo juvenil en Colombia : determinantes y políticas
… y un modelo salarial con una corrección de Heckman, con la cual se validan los resultados. Los datos utilizados son los obtenidos Encuesta de la Transición de la Escuela al Trabajo (ETET), la cual no ha sido utilizada en investigaciones previas sobre el desempleo juvenil en Colombia y, …
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Desempeño Educacional y Brechas Educativas en Chile
… SIMCE y controlando a través del método de Heckman por variables relacionadas con el acceso al sistema educacional obtenidas de la Encuesta de Caracterización Socioeconómica (CASEN). La principal pregunta subyacente del trabajo, se relaciona con el posible sesgo ejercido por las tasas de …
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