Las familias latinoamericanas interrogadas: hacia la articulación del diagnóstico, la legislación y las políticas

Incluye Bibliografía

Mujeres migrantes de América Latina y el Caribe: derechos humanos, mitos y duras realidades

Incluye Bibliografía

Migración y salud en zonas fronterizas: Haití y la República Dominicana

Incluye Bibliografía

La sostenibilidad de la deuda pública, el efecto bola de nieve y el "pecado original"

Incluye Bibliografía

Consecuencias iniciales de los comportamientos PYMEs en el nuevo escenario de negocios en Argentina

Incluye Bibliografía

La inversión extranjera directa en la industria manufacturera argentina: tendencias y estrategias recientes

Incluye Bibliografía

Inversión y productividad en la industria boliviana de electricidad

Incluye Bibliografía

Investimentos na indústria brasileira depois da abertura e do real: o mini-ciclo de modernizações, 1995-1997

Incluye Bibliografía

La supervisión bancaria en América Latina en los noventa

Incluye Bibliografía

The influence of subpixel measurement on digital camera calibration

The aim of this work is to evaluate the influence of point measurements in images, with subpixel accuracy, and its contribution in the calibration of digital cameras. Also, the effect of subpixel measurements in 3D coordinates of check points in the object space will be evaluated. With this purpose, an algorithm that allows subpixel accuracy was implemented for semi-automatic determination of points of interest, based on Fõrstner operator. Experiments were accomplished with a block of images acquired with the multispectral camera DuncanTech MS3100-CIR. The influence of subpixel measurements in the adjustment by Least Square Method (LSM) was evaluated by the comparison of estimated standard deviation of parameters in both situations, with manual measurement (pixel accuracy) and with subpixel estimation. Additionally, the influence of subpixel measurements in the 3D reconstruction was also analyzed. Based on the obtained results, i.e., on the quantification of the standard deviation reduction in the Inner Orientation Parameters (IOP) and also in the relative error of the 3D reconstruction, it was shown that measurements with subpixel accuracy are relevant for some tasks in Photogrammetry, mainly for those in which the metric quality is of great relevance, as Camera Calibration.

ProGriD: The transformation package for the adoption of SIRGAS2000 in Brazil

Brazil adopted SIRGAS2000 in 2005. This adoption called for the provision of the relationships between SIRGAS2000 and the previous reference frames used for positioning, mapping and GIS, namely, the Córrego Alegre (CA) and the South American Datum of 1969 (SAD 69). Two programs were designed for this purpose. The first one, TCGeo, provided the relationships based on three-translation Similarity Transformation parameters. TCGeo was replaced in December 2008, by ProGriD. ProGriD offers, besides the same similarity transformation as TCGeo, a set of transformations based on modelling the distortions of the networks used in the various realizations of CA and SAD 69. The distortion models are represented by a grid in which each node contains a transformation value in terms of difference in latitude and in longitude. The grid follows the same specifications of the NTv2 grid, which has been used in other countries, such as Canada, USA and Australia. This paper presents ProGriD and its main functionalities and capabilities. ©Springer-Verlag Berlin Heidelberg 2012.

Determinantes del déficit y política fiscal en el Ecuador, 1979-1987

Incluye Bibliografía

El déficit cuasifiscal en Ecuador (1979-1987)

Incluye Bibliografía

Unequal participation by women in the working world

Includes bibliography

La cuestión del cuidado: ¿El eslabón perdido del análisis económico?

Incluye Bibliografía