Examinando por Materia "Spatial analysis"

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    Determinantes del mercado de vivienda de interés social. Un caso de estudio para Medellín y su Área Metropolitana
    (Universidad EAFIT, 2023) Hincapié Acosta, Juan Sebastián; García Cruz, Gustavo Adolfo; García Rendón, John Jairo
    This study estimates the effect of the subsidies given for the purchase of housing to families in the municipalities over the years, the characteristics of the public housing projects, the price per square meter offered per project and the multidimensional poverty index per block on the number of square meters offered by construction companies in public housing projects located in Medellín and its Metropolitan Area. We find evidence of the importance of housing subsidies for construction companies and how the availability of land can generate incentives for the construction of social interest projects compared to sites with low availability. The results show that for the total of the Metropolitan Area of the Aburrá Valley the delivery of subsidies for the purchase of housing has positive effects on the amount of square meters offered by construction companies, finding that a 1% increase in the subsidies delivered for the purchase of housing is related to a 0.017% increase in the square meters offered by construction companies. 017% in the square meters offered, likewise an increase of 1% in the price per meter is associated with 0.45% more square meters offered and finally it is found that the increase of one bedroom is associated with an increase of 1.57% in the square meters offered by construction companies, however, thanks to the estimation of the polynomial square of the bedrooms it is observed that there are decreasing marginal returns finding an optimal amount of between 2 and 3 bedrooms for units in the public housing projects.
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    Leptospirosis risk around a potential source of infection
    (SPIE-INT SOC OPTICAL ENGINEERING, 2015-01-01) Erica, Loaiza-Echeverry; Doracelly, Hincapie-Palacio; Acosta Jesus, Ochoa; Giraldo Juan, Ospina; Erica, Loaiza-Echeverry; Doracelly, Hincapie-Palacio; Acosta Jesus, Ochoa; Giraldo Juan, Ospina; Universidad EAFIT. Departamento de Ciencias; Lógica y Computación
    Leptospirosis is a bacterial zoonosis with world distribution and multiform clinical spectrum in men and animals. The etiology of this disease is the pathogenic species of Leptospira, which cause diverse manifestations of the disease, from mild to serious, such as the Weil disease and the lung hemorrhagic syndrome with lethal proportions of 10% - 50%. This is an emerging problem of urban health due to the growth of marginal neighborhoods without basic sanitary conditions and an increased number of rodents. The presence of rodents and the probability of having contact with their urine determine the likelihood for humans to get infected. In this paper, we simulate the spatial distribution of risk infection of human leptospirosis according to the proximity to rodent burrows considered as potential source of infection. The Bessel function K0 with an r distance from the potential point source, and the scale parameter a in meters was used. Simulation inputs were published data of leptospirosis incidence rate (range of 5 to 79 x 10 000), and a distance of 100 to 5000 meters from the source of infection. We obtained an adequate adjustment between the function and the simulated data. The risk of infection increases with the proximity of the potential source. This estimation can become a guide to propose effective measures of control and prevention. © 2015 SPIE.