CEDEUS
Permanent URI for this collection
Browse
Browsing CEDEUS by browse.metadata.fuente "WOS"
Now showing 1 - 6 of 6
Results Per Page
Sort Options
- ItemCoastal Evolution in a Wetland Affected by Large Tsunamigenic Earthquakes in South-Central Chile: Criteria for Integrated Coastal Management(MDPI, 2021) Martínez Reyes, Carolina Del Pilar; Sepúlveda-Zuñiga, Einer; Villagrán, Mauricio; Rojas, Octavio; Gómez, Matias; López, Pablo; Rojas Quezada, Carolina Alejandra; Centro de Desarrollo Urbano Sustentable (Chile)The coastal evolution of the microtidal Tubul-Raqui wetland in south-central Chile (36 degrees S), which historically has been affected by large earthquakes and tsunamis, particularly the 1960 (Mw = 9.5) and 2010 (Mw = 8.8) subduction earthquakes and their associated tsunamis, is analyzed. Historical aerial photographs and topographic and bathymetric surveys from the 1961-2017 period, as well as salinity, sediment, and flora data obtained following the 2010 earthquake were used for comparison with data from prior to the event. A steady state of the shoreline was established, with an average erosion rate of -0.016 m/year in the 1961-2017 period. However, erosion predominated in the period between these two large earthquakes (1961-2009), with an average rate of -0.386 m/year. The wetland dried up, partially recovered saline intrusion a year later, and recovered the salinity conditions it had before the earthquake two years later. The postearthquake effects on the floristic composition were not significant, with the species Spartina densiflora, which presented a high tolerance to these types of changes, predominating. Moreover, 75 percent of the taxa in pre- and postearthquake conditions coincided, with the halophyte species Spartina densiflora, Sarcocornia fructicosa, and Cotula coronopifolia predominating, while the best-conserved community was Spartina-Sarcocornia association located in the saltmarsh. Seven years after the earthquake, the shoreline presented an accretion rate of 2.935 m/year; if the current tectonic conditions prevail, an erosive trend can be expected in the coming decades. The morphological variability and the changes associated with the shoreline in this wetland are strongly controlled by tectonic factors. Criteria aimed at integrated coastal management to promote its occupancy and use in accordance with its evolutionary dynamics are proposed.
- ItemEvaluating the health effects of place-based slum upgrading physical environment interventions: A systematic review (2012-2018)(PERGAMON-ELSEVIER SCIENCE LTD, 2020) Henson, Rosie Mae; Ortigoza, Ana; Martinez Folgar, Kevin; Baeza, Fernando; Caiaffa, Waleska; Vives Vergara, Alejandra; Diez Roux, Ana, V; Lovasi, Gina; Centro de Desarrollo Urbano Sustentable (Chile)Rapid urbanization in low- and middle-income countries (LMIC) is associated with increasing population living in informal settlements. Inadequate infrastructure and disenfranchisement in settlements can create environments hazardous to health. Placed-based physical environment upgrading interventions have potential to improve environmental and economic conditions linked to health outcomes. Summarizing and assessing evidence of the impact of prior interventions is critical to motivating and selecting the most effective upgrading strategies moving forward. Scientific and grey literature were systematically reviewed to identify evaluations of physical environment slum upgrading interventions in LMICs published between 2012 and 2018. Thirteen evaluations that fulfilled inclusion criteria were reviewed. Quality of evaluations was assessed using an adapted Effective Public Health Practice Project Quality Assessment Tool for Quantitative Studies. Findings were then pooled with those published prior to 2012. Narrative analysis was performed. Of thirteen evaluations, eight used a long-itudinal study design ("primary evaluations"). All primary evaluations were based in Latin America and included two housing, two transportation, and four comprehensive intervention evaluations. Three supporting evaluations assessed housing interventions in Argentina and South Africa; two assessed a comprehensive intervention in India. Effects by intervention-type included improvements in quality of life and communicable diseases after housing interventions, possible improvements in safety after transportation and comprehensive interventions, and possible non-statistically significant effects on social capital after comprehensive interventions. Effects due to interventions may vary by regional context and intervention scope. Limited strong evidence and the diffuse nature of comprehensive interventions suggests a need for attention to measurement of intervention exposure and analytic approaches to account for confounding and selection bias in evaluation. In addition to health improvements, evaluators should consider unintended health consequences and environmental impact. Understanding and isolating the effects of place-based interventions can inform necessary policy decisions to address inadequate living conditions as rapid urban growth continues across the globe.
- ItemThe Relation Between Precarious Employment Arrangements and Social Precarity: Findings from the PREMIS Study in Stockholm, Sweden(SAGE PUBLICATIONS LTD, 2021) Matilla Santander, Nuria; Jonsson, Johanna; Kreshpaj, Bertina; Orellana, Cecilia; Benach, Joan; Badarin, Kathryn; Burstrom, Bo; Vives, Alejandra; Kjellberg, Katarina; Stromdahl, Susanne; Johansson, Gun; Ostergren, Per Olof; Bodin, Theo; Centro de Desarrollo Urbano Sustentable (Chile)Precarious employment (PE) is a well-known social determinant of health and health inequalities. However, as most previous studies have focused on physical and mental well-being, less is known about the social-related outcomes (ie, social precarity) associated with precarious arrangements. This cross-sectional study aims to investigate whether PE is associated with social precarity in a working population of 401 nonstandard employed workers in Stockholm, Sweden (2016-2017). PE was assessed with the Swedish version of the Employment Precarious Scale (EPRES-Se) and analyzed in relation to social precarity related to working life (eg, task quality and job security) and living conditions (eg, restraint in social activities and financial constraints). We found positive adjusted associations between quartiles of EPRES-Se and social precarity related to working life (eg, being locked in an occupation [aPR(q4):1.33 [1.10-1.61]]) and living conditions (eg, inability to participate in social activities because of work [aPR(q4):1.27 [1.10-1.46]]). Our findings suggest that individuals in PE experience social precarity, stressing that PE may have negative effects on well-being. Further studies using multidimensional constructs of PE and larger samples should analyze these findings according to social and policy contexts in order to be able to inform policymakers.
- ItemTrends in household energy-related GHG emissions during COVID-19 in four Chilean cities(TAYLOR & FRANCIS LTD, 2022) Rojas, Carolina; Simon, Francois; Muniz, Ivan; Quintana, Marc; Irarrazaval, Felipe; Stamm, Caroline; Santos, Benedita; Centro de Desarrollo Urbano Sustentable (Chile)The coronavirus disease 2019 (COVID-19) pandemic has strongly affected economies and human lifestyles globally. The changes observed in domestic energy consumption patterns have had an impact on household greenhouse gas (GHG) emissions. Since GHG emissions inventories are only available at the country level and at annual intervals, most studies have calculated the local emission variations by extrapolating annual emissions with smaller time and territorial scale consumption data. This research presents a bottom-up method, based on the exploitation of a survey addressed to 1200 households, that provides the information to calculate directly the variation in their energy-related GHG emissions, without the need for extrapolations. This method has been applied to four medium-sized Chilean cities with serious air quality problems. Given the high correlation between atmospheric pollutants such as NOx and CO2 emissions, we estimate that before the appearance of COVID-19, per capita CO2 emissions were already high. The results show that space heating-related GHG emissions have increased moderately (between 1 and 6%), while emissions from electricity and gas consumption for non-heating uses have increased significantly (between 8 and 23%). This has harmed the household economy, highlighting the importance of considering socioeconomic aspects when assessing the impact of COVID-19 in its entirety.
- ItemUsing the five Ws to explore bikeshare equity in Santiago, Chile(ELSEVIER SCI LTD, 2021) Tiznado Aitken, Ignacio; Fuenzalida Izquierdo, Jorge; Sagaris, Lake; Mora, Rodrigo; Centro de Desarrollo Urbano Sustentable (Chile)Various studies show that bikeshare systems have positive implications for people's health, social cohesion, urban livability, and urban congestion, although many suggest bikeshare systems are not achieving equity goals, particularly regarding low-income people and women. To date, most of these studies come from cities in the Global North, the majority with well-managed governance structures and less inequality. Less is known about how well bikeshare systems work in the highly fragmented and unequal cities that characterize Latin America. Using both primary and secondary data, we analyzed equity through the five Ws of bikeshare in Santiago, Chile, exploring which population groups are using the system ('who'), travel purposes ('what') and time periods ('when'), from/to which locations ('where') and the reasons behind using this transport alternative ('why'). To do this, we used three main data sources: data from tracked trips of bikeshare cyclists (BSC) using the primary system in Santiago (Bike Santiago system run by Tembici), Santiago's Origin-Destination Survey data for own bike cyclists (OBC), and a survey of BSC. This article contributes to current knowledge about bikeshare and equity in a still underexplored Latin American context with limited bikeshare data, providing some conclusions regarding the adaptation of these systems to local contexts. In line with findings elsewhere, we found that the largest group of users consisted of educated men aged 25-45 from medium-to high-income neighborhoods, mainly using the system to travel to work. Santiago's fragmented governance has limited the placement of bikeshare systems in low-and middle-income communities and left them with few intermodal alternatives to relevant destinations. As a result, bikeshare mimics the existing inequity and economic concentration patterns that characterize Santiago's daily mobility. Based on these findings, we suggest key considerations and local adaptations that could improve, expand, and redistribute bikeshare facilities to attract currently excluded users.
- ItemVulnerable individuals and institutions: the double territorial burden of COVID-19 in Chile(LIVERPOOL UNIV PRESS, 2021) Vecchio, Giovanni; Tiznado Aitken, Ignacio; Steiniger, Stefan; Centro de Desarrollo Urbano Sustentable (Chile)