Examinando por Autor "Arango Sandoval, Sara"
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Ítem Análisis del aumento en los valores del suelo estimados en un proyecto de valorización y los valores de mercado observados con posterioridad a la ejecución de las obras financiadas : estudio de caso del proyecto Valorización El Poblado, Medellín – Colombia(Universidad EAFIT, 2022) Rodríguez Nieto, Maria José; Arango Sandoval, Sara; Pérez Moreno, Óscar Eduardo; Muñoz Mora, Juan CarlosThis research carries out an ex post analysis of El Poblado valuation project, executed in Medellín, in order to determine the differences in the estimated and the market values of the land after the construction of the 24 infrastructure works for the 321 lots located in the area of influence of the project. Based on univariate and multivariate descriptive analyses, the difference between the actual valuation of the project and that estimated in the benefit study, carried out by Fonvalmed, Medellín´s Valorization Fund, is studied. The methodology applied in this research shows that, on average, the calculated valuation is 7.63 times higher than that estimated within the framework of the project. This study aims to contribute to the scarce existing literature on the effects that public works have on land values that materialize in the market after the implementation of the valorization contribution. Likewise, to provide recommendations to the makers and implementers of public policies in order to refine the methods and estimates in this type of financing mechanisms and give legitimacy and transparency to the payment and collection process.Ítem Factores socioeconómicos y variables de disuasión que explican la criminalidad en Colombia entre el 2010 y 2017(Universidad EAFIT, 2020) Arango Sandoval, Sara; Restrepo Orrego, Carolina; Tobón Zapata, SantiagoThis paper is an empirical application of the Becker-Ehrlich model, to determine some factors that influence the crime rate in the municipalities of Colombia and contribute to the crime economics studies carried out in the country. Based on panel data for municipalities of Colombia from 2010 to 2017, the determinants of crime rates were estimated using a fixed effects model where the cross-sectional units are municipalities and temporary units the years. The main variables of interest were those that conceptually approximate the Becker-Ehrlich model: the catch rate (associated with deterrence and probability of capture), and the industry tax payment rate (associated with the economic dynamics of the municipality, which serve as a proxy for the opportunity cost of going to the legal labor market). The specification of fixed effects manages to control municipal idiosyncratic characteristics that do not vary over time (such as culture), and annual shocks common to all municipalities (such as changes in national public policies). In general, these results are relevant to guiding future investigations into economics crime and serve to make several policy recommendations that contribute to the fight against crime in the country.