Artículos de conferencia

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Browsing Artículos de conferencia by browse.metadata.categoria "Historia y geografía"

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    Assessing the impact of Digital Elevation Model resolution on Elevation Gain Estimations in Trail Running
    (IEEE, 2024) Sánchez, Raimundo; Egli, Pascal; Besomi, Manuela; Truffello Robledo, Ricardo
    This study addresses the challenge of accurately estimating Elevation Gain (EG) in trail running using GPS devices, where resolution of Digital Elevation Models (DEMs) plays a critical role. We propose an algorithmic enhancement to increase the resolution of a 4m DEM to 20cm, aligning it closely with high-resolution LiDAR models. Quantitative analyses reveal that this method significantly improves EG estimations, demonstrating a considerable reduction in error margins compared to conventional EG estimation using raw GPS. Specifically, our findings indicate that the bilinearly interpolated DEM achieves near-LiDAR accuracy at 20cm resolution, with error rates markedly decreasing at this scale. This study underscores the potential of using enhanced-resolution DEMs as a cost-effective alternative to LiDAR, particularly in applications like trail running where precise elevation data is crucial. Our approach not only offers a substantial improvement in the accuracy of physical workload assessments but also enhances the accessibility of high-quality elevation data for broader geographical and environmental applications.
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    Justicia socio-ambiental y sostenibilidad en el crecimiento de las ciudades medias de Chillán y Los Ángeles (Chile)
    (2009) Henríquez, Cristián; Arenas, Federico; Romero Aravena, Hugo; Azócar Garcia, Gerardo
    El cambio en los patrones de crecimiento urbano de algunas ciudades medias latinoamericanas se ha caracterizado por el paso raudo de una morfología compacta, propia de la ciudad colonial, a una estructura fragmentada que acentúa no solo las diferencias sociales, sino también ambientales, entre sus diferentes áreas. El proceso de reestructuración urbana de estas ciudades se puede clasificar como no sustentable, en la medida que favorece la segregación social, el consumo de recursos y la degradación del medio ambiente. Las evidencias de que los sectores sociales más vulnerables reciben en forma desproporcionada los efectos ambientales adversos han llevado a plantear la necesidad de recuperar el concepto de justicia socio-ambiental en la configuración de la ciudad actual, caracterizada por las enormes diferencias entre los grupos más acomodados, que disfrutan de mejores amenidades ambientales en el periurbano, y que a la vez producen fuertes impactos sobre el medio, y los grupos más desposeídos que viven en condiciones de alta vulnerabilidad natural y social. El objetivo de esta comunicación es caracterizar este fenómeno en las ciudades de Chillán y Los Ángeles, considerando como ilustraciones de la falta de justicia socioambiental e insostenibilidad urbana la segregación social, la pérdida de suelo agrícola y la ocurrencia de inundaciones.
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    Método de evaluación del grado de antropización y sensibilidad ambiental: costa nororiental de la Isla Grande de Chiloé, Chile
    (2001) Hallégouët, Bernard; Andrade, Belisario; Qüense, Jorge; Arenas, Federico
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    The Academic SDI-Towards Understanding Spatial Data Infrastructures for Research and Education
    (Springer, 2017) Coetzee, Serena; Steiniger, Stefan; Köbben, Barend; Iwaniak, Adam; Kaczmarek, Iwona; Rapant, Petr; Cooper, Antony; Behr, Franz-Josef; Schoof, Govert; Katumba, Samy; Vatseva, Rumiana; Sinvula, Kisco; Moellering, Harold; CEDEUS (Chile)
    The demand for geospatial data across different disciplines and organisations has led to the development and implementation of spatial data infrastructures (SDI) and the theory and concepts behind them. An SDI is an evolving concept about facilitating and coordinating the exchange of geospatial data and services between stakeholders from different levels in the spatial data community. Universities and other research organisations typically have well-established libraries and digital catalogues for scientific literature, but catalogues for geospatial data are rare. Geospatial data is widely used in research, but geospatial data produced by researchers is seldom available, accessible and usable, e.g., for purposes of teaching or further research after completion of the project. This chapter describes the experiences of a number of SDI implementations at universities and research institutes. Based on this, the Academic SDI, an SDI for research and education, is defined and its stakeholders are described. The purpose, scope and stakeholders of the Academic SDI are described based on the formal model of an SDI developed by the International Cartographic Association (ICA) Commission on SDIs and Standards (formerly the Commission on Geoinformation Infrastructures and Standards). The results contribute to understanding the state-of-the-art in SDI implementations at universities and research institutes; how the Academic SDI differs from a 'regular' SDI; and which role players need to be involved in a successful SDI implementation for research and education.
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    Valoración ambiental de la zona costera aplicada al ordenamiento territorial: litoral del Chile central, entre La Boca y Boyeruca
    (2003) Andrade, Belisario; Arenas, Federico; Qüense, Jorge
    Esta ponencia expone parte de los resultados preliminares del Proyecto FONDECYT N° 1020879, “Valoración ambiental de la zona costera aplicada al ordenamiento territorial: litoral del Chile central, entre La Boca y Boyeruca.