8 results
Search Results
2. Assessing Flood Severity and Risk to Residents in Bosque Chapultepec.
- Author
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NAVA-ROMERO, Itai, BRAVO-JÁCOME, José Avidán, and PRECIADO-JIMÉNEZ, Margarita Elizabeth
- Subjects
FLOOD risk ,FLOOD warning systems ,STORMS ,HEALTH risk assessment ,FLOW velocity ,WATER depth - Abstract
This paper aims to study storm events that lead to urban flooding and their after-effects in Bosque Chapultepec, an urban forest located in Mexico City. Considering Bosque Chapultepec’s landscape configuration and composition, along with micro-watersheds that drain into the four-sectioned study area, the water depths and velocities were estimated through hydrodynamic models in Iber derived from design storms for different return periods between 2 and 10,000 years. Risk to human safety assessment due to flooding was determined in terms of flow depth and velocity using the Dorrigo classification; and vulnerable zones prone to endanger people to be dragged by the flow were determined and classified following approach proposed by Milanesi, Pilotti, and Ranzi which has an inherent relationship not only to topographic data – since is one of the main data input in hydrodynamic simulations to create flood depth and velocity rasters – but also to human body conceptual model of human stability in a flow. 100-year return period storm events showed that more than 60% of area affected by flooding would not cause damages to light structures, vehicle instability nor reduce people’s ability for wading; and more than 90% on area where people were at risk of being washed away corresponded to very low levels, meaning that people passing by the forest only need to be cautious. Furthermore, in light of the latter, recommendations were proposed to prevent flooding in Bosque Chapultepec and to reduce both flood severity and risk to residents to being washed away. [ABSTRACT FROM AUTHOR]
- Published
- 2024
3. Bats as indicators of ecological resilience in a megacity.
- Author
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Gutiérrez-Granados, Gabriel and Rodríguez-Zúñiga, María Teresa
- Subjects
BIOINDICATORS ,ECOLOGICAL resilience ,MEGALOPOLIS ,BATS ,BAT sounds - Abstract
Urbanization has transformed more than 50% of the land area and brought the emergence of a new humanized-based ecosystem. In answer to this, urban systems have looked for become resilient. Thus, urban landscapes must enhance their resilience capacities; robustness, adaptability, and transformability. However, there is a necessity of a well performing and easy gathering indicators. In this paper, we propose that bats are a good indicator of city's capacity to be resilient. We used bat permanence, species diversity, and activities to analyze Mexico City resilience capacities. We used citizen science to register bat sounds around the city. From these data we identified bat species and two main activities: passes and hunting buzzes. Data showed that the east and center area of the city had the lower species richness and relative abundance, while south was the richest. This diversity patterns were in response to different habitat characteristics, mainly those related to landscape. However, activities and permanence were strongly related with human presence. The bat permanence modeled, indicated that bat community structure could be shaped under changing scenarios. Due to their differential sensitivity bats are good indicators of habitat changes in urban landscapes. Cities seeking resilience should perform planned-habitat management to achieve a bat-friendly status and promote the ecosystem services that bats can provide. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Constructing Chinese Spaces in Mexico City: The Case of the Viaducto Piedad Neighbourhood.
- Author
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Martínez Rivera, Sergio
- Subjects
NEIGHBORHOODS ,CHINESE people ,BRAND communities ,BRANDING (Marketing) ,RECREATION - Abstract
This article analyses new tendencies in the construction of Chinese spaces within Mexico City. Traditionally, the Barrio de Dolores (Cuahutemoc borough) is identified as the main Chinese point of reference; however, over time it has become a space dedicated more to exploiting the so-called Chinatown brand for commercial purposes than to fostering a sense of community. Based on a recent pilot study, it is argued that in the Viaducto Piedad neighbourhood (Iztacalco borough), where Chinese immigrants have been arriving since the early 1990s, a different pattern of urban integration has emerged. Members of the community live in the area, where they carry out religious and recreational activities; some of them are business owners or employees, and their children attend local schools. That is why the area can be considered Mexico City's new Chinatown. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Gentrification and access to housing in Mexico City during 2000 to 2022.
- Author
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Aguilar-Velázquez, Daniel, Islas, Iván Rivera, Tecua, Guillermo Romero, and Valenzuela-Aguilera, Alfonso
- Subjects
GENTRIFICATION ,RESIDENTIAL patterns ,HOUSING ,HOME prices ,REAL property sales & prices ,DATABASES - Abstract
We conducted a spatial and temporal analysis of housing patterns in Mexico City by utilizing an extensive database of 16,000 prices for flats and houses, covering the period from 2000 to 2022. Our findings reveal a striking trend: The average housing prices have quadrupled over a 20-y period, without considering inflation. In contrast, the per capita labor income of Mexican citizens has declined relative to inflation. As a result, the average family encountered four times greater challenges in accessing housing in 2015 as compared to 2005. Furthermore, our research demonstrates that areas that have undergone significant gentrification or super-gentrification contribute to a widespread increase in land value on neighboring zones, leading to the emergence of clusters of highly expensive neighborhoods. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. The COVID-19 disaster in Mexico City: Exploring risk drivers at the local scale.
- Author
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Lorena Romero-Gaeta, Perla and Alcántara-Ayala, Irasema
- Subjects
COVID-19 ,COVID-19 pandemic ,SOCIOECONOMIC factors ,DEATH rate ,DISASTERS - Abstract
The COVID-19 pandemic had a significant impact on the inhabitants of Mexico City. With over 9 million people living in 16 districts, infections and mortality rates varied greatly. In this article, demographic and socio-economic factors were analyzed to determine vulnerability and exposure to COVID-19 during the crisis from 27 February 2020 to 10 May 2021. The study revealed that mortality and infections were distributed differently across the districts of Mexico City. The districts with the most confirmed cases did not necessarily have the highest death rates. Many deaths were linked to age and comorbidities, such as hypertension, diabetes, and obesity. Poverty, overcrowding, the lack of space, and basic services contributed to vulnerability and exposure to the disease. Inequalities in the city's development over time resulted in varying degrees of vulnerability and exposure to COVID-19, leading to different patterns of infections and deaths across the districts. The prevalence of infections in the city's southwestern districts can be attributed to the combination of marginalization, poverty, and inadequate services. Conversely, the northwest areas of the city, with a higher concentration of elderly residents, experienced a greater number of fatalities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. Findings from National Autonomous University of Mexico (UNAM) in Schizophrenia Reported (Social Cognition Training Using Virtual Reality for People With Schizophrenia: a Scoping Review).
- Subjects
SOCIAL perception ,PEOPLE with schizophrenia ,SCHIZOPHRENIA ,VIRTUAL reality ,PSYCHIATRIC research ,MENTAL illness - Abstract
A recent report discusses the use of social cognition training with virtual reality (SCT-VR) as a potential intervention for individuals with schizophrenia. The report presents findings from a scoping review that examined the characteristics of SCT-VR in schizophrenia. Twelve studies were included in the analysis, and the results showed that SCT-VR could be a feasible and promising approach for improving social cognition deficits in schizophrenia. However, the heterogeneity in methodological approaches has prevented the reaching of robust conclusions. Further research is needed in this field. [Extracted from the article]
- Published
- 2024
8. Reports Outline Proinsulin Findings from Metropolitan Autonomous University (Stim1 Regulates Pancreatic 13-cell Behaviour: a Modelling Study).
- Subjects
PROINSULIN ,PEPTIDE hormones ,PEPTIDES ,NEWSPAPER editors - Abstract
A report from the Metropolitan Autonomous University in Mexico City discusses the role of the protein STIM1 in regulating the behavior of pancreatic beta cells. These cells respond to high glucose levels by producing electrical activity and calcium oscillations, which drive insulin secretion. The study used mathematical modeling to investigate the effects of STIM1 on the cells' response. The simulations suggest that STIM1 concentration affects bursting frequency, burst duration, and intracellular calcium levels. The findings may have implications for understanding impaired insulin secretion in diabetes. [Extracted from the article]
- Published
- 2024
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