Una propuesta metodológica para estimar los cambios sobre el valor de la propiedad: estudio de caso para Bogotá aplicando Propensity Score Matching y Precios Hedónicos Espaciales

The aim of this study is to analyze and compare the results from Propensity Score Matching (PSM) and Spatial Hedonic Prices (SHP) methodologies estimating value fluctuations on residential proprieties in Bogotá (Colombia). Specifically, this study examines value fluctuations on residential properties nearby stations of the Bus Rapid Transit (BRT) system—Transmilenio—. The PSM and SHP approaches suggest additional value increases for residential properties close to BRT stations

A methodological proposal to estimate changes of residential property value: case study developed in Bogota

This article is an empirical study of residential land values in the vicinity of the TransMilenio system (Bus Rapid Transit, BRT) in Bogota´ (Colombia). The results have been established through impact evaluation by means of nonparameteric approaches (Propensity Score Matching, PSM) and econometric approaches (Spatial Hedonic Price, SHP) indicating that access to the BRT system generates benefits on the change of property value

Una propuesta metodológica para estimar los cambios sobre el valor de la propiedad: estudio de caso para Bogotá aplicando Propensity Score Matching y Precios Hedónicos Espaciales

The aim of this study is to analyze and compare the results from Propensity Score Matching (PSM) and Spatial Hedonic Prices (SHP) methodologies estimating value fluctuations on residential proprieties in Bogotá (Colombia). Specifically, this study examines value fluctuations on residential properties nearby stations of the Bus Rapid Transit (BRT) system—Transmilenio—. The PSM and SHP approaches suggest additional value increases for residential properties close to BRT stations

A methodological proposal to estimate changes of residential property value: case study developed in Bogota

This article is an empirical study of residential land values in the vicinity of the TransMilenio system (Bus Rapid Transit, BRT) in Bogota´ (Colombia). The results have been established through impact evaluation by means of nonparameteric approaches (Propensity Score Matching, PSM) and econometric approaches (Spatial Hedonic Price, SHP) indicating that access to the BRT system generates benefits on the change of property value

Funciones de producción, análisis de economías a escala y eficiencia técnica en el eje cafetero colombiano: una aproximación con frontera estocástica

This article is an empirical study about flexible and conventional functional forms of coffee production, minflex Laurent Translog function econometrically has been established in Colombia coffee zone for the farm size (smallholders, medium and large farms, general sector), using a stochastic frontier model through standard maximum likelihood method. Likewise, their returns to scale and technical efficiency were derived

Funciones de producción y eficiencia técnica en el eje cafetero colombiano: una aproximación con frontera estocástica

Este estudio estimó la forma funcional de producción cafetera en Colombia mediante fronteras estocásticas (FEP). Con esto, se analizó la importancia de los principales insumos empleados en la producción de café (cantidad de hectáreas cultivadas, mano de obra utilizada, maquinaria requerida y cantidad de fertilizantes aplicados), que afectan la productividad. Igualmente, se determinó la existencia de economías a escala en productores pequeños, medianos, grandes y sector general cafetero; ubicados en Caldas, Quindío y Risaralda. Finalmente, fue evaluada la eficiencia técnica (ET) en la producción. Entre los principales resultados, se destaca que la función de producción cafetera tiene una forma funcional Translog minflex Laurent para pequeños, medianos, grandes y sector general del eje cafetero colombiano. Así, para pequeños, medianos y sector general de cafeteros existe ineficiencia técnica y estocástica en la actividad agrícola; caso contrario, en grandes que son eficientes técnicamente aunque no estocásticamente. Por consiguiente, la medida de eficiencia técnica obtenida mediante FEP, indica que el promedio de rendimiento para el sector general es de 70%, en pequeños 70%, medianos 66% y grandes del 99%. Dada la heterogeneidad, en la producción de café, los pequeños, medianos y sector general de caficultores presentan rendimientos crecientes a escala, mientras los grandes cafeteros exhiben rendimientos decrecientes a escala; en el eje cafetero colombiano. De acuerdo con estos resultados, el insumo más importante en el sector cafetero, unidades medianas y pequeñas es el área productiva en café, mientras para los grandes es la mano de obra empleada en el cultivo.función de producción cafetera, pequeños caficultores, medianos caficultores, grandes caficultores y sector general cafetero, frontera estocástica de producción, eficiencia técnica, análisis de economías a escala., Crop Production/Industries, Q12, D24, C01, C29,

Factores que afectan la eficiencia técnica y asignativa en el sector cafetero colombiano: una aplicación con análisis envolvente de datos

Technical and Allocative efficiency are relative concepts, first it is used conventionally, to know if a producer obtain the maximum level of production, according to the amount of inputs used in the process. The second looks for to know if the producer uses the optimal amounts of inputs in the production process, according to the prices of these production factors. This study use microeconomic data on coffee producers of the Caldas, Quindío and Risaralda to determinate the levels of technical and allocative efficiency using “Data Envelopment Analysis – DEA”. Technical efficiency for small producers it is 3.76%, for middle producer it is 51.71% and big producers it is 60.15%, for the all coffee sector the technical efficiency it is 42.38%. Whereas for the allocative efficiency, the results are 36.13%, 42.98%, 18.86% and 36.50%, respectively. This results show that the coffee Colombian sector it is inefficient technical and allocatively. This means that the big producers uses the correct amount of inputs for maximize the coffee production but they do not produce following the schedule of minimum cost. On the other hand, small and middle producers and for all coffee sector they do not use efficiently the inputs, they do not maximize your coffee production and they do not produce following the minimum cost schedule, this because they are technical and allocatively inefficient

Factores que afectan la eficiencia técnica y asignativa en el sector cafetero colombiano: una aplicación con análisis envolvente de datos

Technical and Allocative efficiency are relative concepts, first it is used conventionally, to know if a producer obtain the maximum level of production, according to the amount of inputs used in the process. The second looks for to know if the producer uses the optimal amounts of inputs in the production process, according to the prices of these production factors. This study use microeconomic data on coffee producers of the Caldas, Quindío and Risaralda to determinate the levels of technical and allocative efficiency using “Data Envelopment Analysis – DEA”. Technical efficiency for small producers it is 3.76%, for middle producer it is 51.71% and big producers it is 60.15%, for the all coffee sector the technical efficiency it is 42.38%. Whereas for the allocative efficiency, the results are 36.13%, 42.98%, 18.86% and 36.50%, respectively. This results show that the coffee Colombian sector it is inefficient technical and allocatively. This means that the big producers uses the correct amount of inputs for maximize the coffee production but they do not produce following the schedule of minimum cost. On the other hand, small and middle producers and for all coffee sector they do not use efficiently the inputs, they do not maximize your coffee production and they do not produce following the minimum cost schedule, this because they are technical and allocatively inefficient

Beneficios económicos del implante coclear para la hipoacusia sensorineural profunda

The main purpose of this study was to evaluate the cost-benefit, cost-utility, and cost-effectiveness of cochlear implantation, comparing it to the use of hearing aids in children with profound bilateral sensorineural hearing loss.The nonparametric propensity score matching method was used to carry out an economic and impact assessment of the cochlear implant and then perform cost-benefit, cost-utility, and cost-effectiveness analyses. Primary information was used, taken randomly from 100 patients: 62 who received cochlear implants (treatment group) and 38 belonging to the control group who used hearing aids to treat profound sensorineural hearing loss. The Results was an economic cost differential was found—to the advantage of the cochlear implant—of close to US$204 000 between the implant and the use of hearing aids over the expected life span of the patients analyzed. This amount refers to the greater expenses that hearing-aid patients will have. With this adjusted figure, the cost-benefit indicator shows that for each dollar invested to treat the cochlear-implant patient, there is a return on the investment of US$ 2.07. Conclusions, the cochlear implant produces economic benefits for the patient. It also produces health utilities since positive cost-utility (gain in decibels) and costeffectiveness (gain in language discrimination) ratios were found