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- ItemA New Method to Determine How Compaction Affects Water and Heat Transport in Green Roof Substrates(2019) Victoria Sandoval; Suarez Poch, Francisco; CEDEUS (Chile)
- ItemA new methodology for source apportionment of gaseous industrial emissions(2023) Jorquera, Héctor; Villalobos, Ana María; CEDEUS (Chile)Air quality modeling (AQM) is often used to investigate gaseous pollution around industrial zones. However, this methodology requires accurate emission inventories, unbiased AQM algorithms and realistic boundary conditions. We introduce a new methodology for source apportionment of industrial gaseous emissions, which is based on a fuzzy clustering of ambient concentrations, along with a standard AQM approach. First, by applying fuzzy clustering, ambient concentration is expressed as a sum of non-negative contributions — each corresponding to a specific spatiotemporal pattern (STP); we denote this method as FUSTA (FUzzy SpatioTemporal Apportionment). Second, AQM of the major industrial emissions in the study zone generates another set of STP. By comparing both STP sets, all major source contributions resolved by FUSTA are identified, so a source apportionment is achieved. The uncertainty in FUSTA results may be estimated by comparing results for different numbers of clusters. We have applied FUSTA in an industrial zone in central Chile, obtaining the contributions from major sources of ambient SO2: a thermal power plant complex and a copper smelter, and other contributions from local and regional sources (outside the AQM domain). The methodology also identifies SO2 episodes associated to emissions from the copper smelter.
- ItemA Spatial Analysis of Dispersion Mechanisms in the Hydrological Response Using a Spatially Distributed Travel Time Model(2022) Pablo Chong; Gironas Leon, Jorge Alfredo; Jeffrey D. Niemann; CEDEUS (Chile)
- ItemAcceso a la vivienda de la clase media en un mercado restrictivo: Estrategias residenciales adaptativas en el centro y pericentro de Santiago de Chile(2021) Suazo, Víctor; Ruiz-Tagle V., Javier; CEDEUS (Chile)Se analizan las estrategias residenciales adaptativas de parejas jóvenes de clase media para comprar o arrendar departamentos en el centro y pericentro de Santiago de Chile. Desde una investigación cualitativa, se describen complejos despliegues de capital social y económico. Ante diferentes barreras legales o económicas de un mercado crecientemente financiarizado, se observa la recurrencia a terceros agentes económicos, la extensión del arriendo, la postergación de la emancipación residencial y del ciclo vital, y la institucionalización de lazos afectivos.
- ItemAccessibility disturbances to the biodiversity of urban wetlands due to built environment(2022) Rojas Quezada, Carolina Alejandra; Sepúlveda Zúñiga, Einer Alexander; Jorquera Guajardo, Felipe Ignacio; Munizaga, Juan; Pino, Joan; CEDEUS (Chile)
- ItemAccessibility: Enablement by access to valued opportunities(2019) Pucci, P.; Vecchio, Giovanni; CEDEUS (Chile)
- ItemActive and legacy mining in an arid urban environment: challenges and perspectives for Copiapo, Northern Chile(2016) Pasten Gonzalez, Pablo Arturo; CEDEUS (Chile)
- ItemActual Evapotranspiration Estimates in Arid Cold Regions Using Machine Learning Algorithms with In Situ and Remote Sensing Data(2021) Josefina Mosre; Suarez Poch, Francisco; CEDEUS (Chile)
- ItemAir Bubbles as an Admixture for Printable Concrete: A Review of the Rheological Effect of Entrained Air(2022) Eugenin, C.; Navarrete, I.; Brevis Vergara, Wernher Ariel; Lopez, M.; CEDEUS (Chile)
- ItemAn Unsaturated/Saturated Coupled Hydrogeological Model for the Llamara Salt Flat, Chile, to Investigate Prosopis tamarugo Survival(2019) Alex Samuel; Nicole Blin; José F. Muñoz; Suarez Poch, Francisco; CEDEUS (Chile)
- ItemAnalysis of Net Zero Energy Buildings public policies at the residential building sector: A comparison between Chile and selected countries(2022) Tori, F.; Bustamante Gomez, Waldo Enrique; Vera, S.; CEDEUS (Chile)
- ItemAssessing the impact of cycling infrastructure: A non-linear hedonic model for Santiago de Chile(2024) Vega, Rodrigo; Greene, Margarita; Ortuzar Salas, Juan De Dios; CEDEUS (Chile)
- ItemBenchmarking the Covid-19 pandemic across countries and states in the USA under heterogeneous testing(2020) Asahi Kodama, Kenzo Javier; Undurraga Fourcade, Eduardo Andrés; Wagner, Rodrigo; CEDEUS (Chile)Public health officials need to make urgent decisions to reduce the potential impact of the CoVID-19 pandemic. Benchmarking based on the increase in total cases or case fatality rates is one way of comparing performance across countries or territories (such as states in the USA), and could inform policy decisions about COVID-19 mitigation strategies. But comparing cases and fatality across territories is challenging due to heterogeneity in testing and health systems. We show two complementary ways of benchmarking across countries or US states. First, we used multivariate regressions to estimate the test-elasticity-of-COVID-19-case-incidence. We found a 10% increase in testing yielded ~9% (95% CI:4.2–3.4%; p<0.001) increase in reported cases across countries, and ~2% (95%CI:0.1-3.4%; p=0.03) increase across US states during the week ending April 10th, 2020. We found comparable negative elasticities for fatality rates (across countries: β =-0.77, 95%CI:-1.40– -0.14; p=0.02; US states: β=-0.15, 95%CI:-0.30-0.01; p=0.06). Our results were robust to various model specifications. Second, we decomposed the growth in cases into test growth and positive test ratio (PTR) growth to intuitively visualize the components of case growth. We hope these results can help support evidence-based decisions by public health officials as more consistent data hopefully becomes available.
- ItemBias adjustment to preserve changes in variability: the unbiased mapping of GCM changes(2023) Cristián Chadwick; Gironas Leon, Jorge Alfredo; Fernando González-Leiva; Sebastián Aedo; CEDEUS (Chile)
- ItemBig data: hidden challenges for a fair mobility planning(2019) Pucci, P.; Vecchio, Giovanni; CEDEUS (Chile)
- ItemBioelectrochemical chlorate reduction by Dechloromonas agitata CKB(2020) Torres-Rojas, F.; Muñoz, D.; Tapia, N.; Canales, C.; Vargas Cucurella, Ignacio Tomas; CEDEUS (Chile)
- ItemBiofilm formation of Ancylobacter sp. TS-1 on different granular materials and its ability for chemolithoautotrophic As(III)-oxidation at high concentrations(2022) Leiva-Aravena, E.; Vera, M.A.; Nerenberg, R.; Leiva, E.D.; Vargas Cucurella, Ignacio Tomas; CEDEUS (Chile)
- ItemBioprospecting for electrochemically active perchlorate-reducing microorganisms(2022) Torres-Rojas, F.; Muñoz, D.; Pía Canales, C.; Vargas Cucurella, Ignacio Tomas; CEDEUS (Chile)
- ItemBoom city! Regional resource peripheries and urban economic development in Chile(2020) Rehner Johannes; CEDEUS (Chile)
- ItemCaminando por el barrio: comprendiendo las experiencias de las personas mayores en un Santiago adverso, en tiempos de pandemia(2022) Herrmann Lunecke, Marie Geraldine; Figueroa Martínez, Cristhian; Parra Huerta, Francisca; CEDEUS (Chile)Este artículo tiene como objetivo indagar en las condiciones que las personas mayores enfrentan al caminar por los barrios en los que residen. Se busca identificar las formas en las que las características socioespaciales de los barrios, el entorno construido y la pandemia de COVID-19 afectan sus caminatas. Para lograr tales objetivos, el trabajo reporta los resultados de un grupo de entrevistas y grupos focales en los que se invitó a personas mayores residentes de cuatro barrios localizados en la Comuna de Santiago de Chile a conversar sobre sus caminatas y los obstáculos que enfrentan cuando se mueven a pie. Los resultados muestran que las personas mayores comprenden la caminata como una actividad altamente beneficiosa que les permite mantenerse activos, conectados y visibles. Evidencian que los procesos de cambio que han afectado a sus barrios han cambiado el paisaje y la arquitectura social de sus vecindarios, incrementando el miedo hacia el espacio público y la sensación de soledad. El análisis de los datos también mostró que las personas enfrentan diversos obstáculos mientras caminan, incluyendo veredas deterioradas, cruces hostiles y paisajes poco placenteros. Aquellos obstáculos se vieron multiplicados por la llegada del nuevo coronavirus, lo que sumó restricciones y preocupaciones que dificultan aún más la caminata. Los datos recogidos revelan la importancia que tiene la caminata para las personas mayores, por lo cual es fundamental la creación de barrios caminables y del fomento de esta actividad en las políticas públicas como una práctica de autocuidado.