Efectos socioeconómicos del aumento del nivel del mar, como consecuencia del cambio climático, en la Isla de San Andrés : un desafío para la gestión urbana del riesgo

Se realiza un análisis de riesgo prospectivo para determinar los posibles efectos socioeconómicos (población, vivienda, infraestructura económica y vial principal y el producto interno bruto) del aumento del nivel del mar en la cabecera urbana de la Isla de San Andrés, Colombia. Como alternativa a los resultados críticos, se plantean tres modelos de ocupación del territorio que podrían reducir la vulnerabilidad del asentamiento humano.

Parque Lineal El Virrey 2006 - 2010: análisis de la aplicación de estrategias de inclusión contenidas en las políticas públicas de Bogotá en un espacio público significativo

Este estudio de caso hace principal énfasis en las estrategias de inclusión contenidas en la Política Pública de Mujer y Género y la Política Pública de Juventud con el fin de identificar su efectividad dentro del contexto Distrital y Local. Dicha identificación se realiza a través de la revisión de los programas específicos ejecutados entre 2006 a 2010, contenidos en los planes de desarrollo Distritales y Locales dirigidos a los grupos poblacionales específicos mujeres y jóvenes en el espacio público de la ciudad de Bogotá. Acto seguido, se centra la atención en el objeto de análisis de este trabajo, el Parque Lineal El Virrey Norte, en donde se establece la existencia o inexistencia de acciones concretas de inclusión social de carácter Distrital para contrarrestar el fenómeno de segregación socioespacial existente en la capital desde hace varios años, como se señala al inicio del trabajo. Finalmente, se analizan las Encuestas Bienales de Cultura de los años 2007 y 2009 realizadas por el Observatorio de Culturas con el objeto de comparar las tendencias existentes en la ciudad y en la localidad Chapinero, donde se localiza el espacio público significativo analizado en este estudio de caso, de las mujeres y jóvenes directamente relacionadas con inclusión social.

Freedom for rent. Informal housing market of Caracas

For years it was believed that in Caracas an informal rental housing market did not exist. A survey (n:832) in seven informal areas shows the opposite. The article analyzes the socio-legal aspects and characteristics of the market: the negotiated property, the rent, the actors and the norms that regulate the market. It is concluded that the Venezuelan State, with its controls and social policies, has become the principal promoter of the informal rental market and that because of the freedom to rent, the poor are the real estate agents that contribute most to meeting the increasing demand for housing.

Estado del arte sobre la producción institucional y de la teoría crítica en torno al derecho a la ciudad.

Puede entenderse la ciudad como una manifestación de las disputas surgidas desde el plano de lo social. En ese mismo sentido surge el concepto del derecho a la ciudad, entendido en términos generales como aquel que se tiene para decidir el tipo de urbe y su organización. Así, este derecho ha estado limitado a la construcción de espacios propicios para la acumulación de capital, para una élite minoritaria capaz de configurar la ciudad, generando un caos urbano que se evidencia en la segregación socio-espacial, abultando las arcas de los poderosos a la vez que se aíslan a las mayorías trabajadoras del ejercicio el derecho a cambiar y reinventar la ciudad para satisfacer sus necesidades y garantizar sus sueños.

Informality in the City: a Theoretical Analysis

This thesis theoretically studies the relationship between the informal sector (both in the labor and the housing market) and the city structure.

Procesos de expansión urbana en la ciudad colombiana. Efectos de la transformación del municipio de Chía (2002-2012)

El interés de este estudio de caso es analizar el proceso de trasformación de Chía, la expansión urbana de Bogotá y la migración poblacional de la ciudad en el período 2002-2012, a partir de tres dimensiones: la primera, hace alusión al proceso de expansión urbana de Bogotá hacia el norte de la Sabana, teniendo en cuenta la transformación del municipio de Chía; el segundo, hace alusión al sistema de movilidad, conectividad y calidad de vida, considerando la migración poblacional de Bogotá hacia Chía, Cundinamarca; por último, describe los cambios efectuados en el municipio de Chía a partir de la construcción de viviendas nuevas para familias de estratos socio-económicos altos, teniendo en cuenta, la realización de encuestas a familias residentes procedentes de Bogotá, dando como resultado datos cualitativos y cuantitativos de la trasformación de la calidad de vida.

Comparación de las dinámicas de uso y apropiación del espacio público en parques de origen informal y formal: parque Villa de la Torre y parque Cayetano Cañizares

El interés de este estudio de caso es comparar las dinámicas de uso y apropiación del espacio público en parques de origen formal e informal, y discutir sus implicaciones en la vida social y urbana, teniendo como zonas el parque Villa de la Torre (informal) y el parque Cayetano Cañizares (formal). Este trabajo se enmarca en conceptos de uso y apropiación del espacio público, a partir de los cuales se examinan las dinámicas de formalidad e informalidad de los parques zonas de estudio, explorando qué efectos puede tener su origen, y revisando si el parque informal implica falta de apropiación y usos conflictivos, o si por el contrario, las dinámicas que en espacios públicos se dan pueden incluir dinámicas positivas y negativas indistintamente de su origen.

Racial and spatial interaction for neighborhood dynamics in Chicago

We look at at the empirical validity of Schelling’s models for racial residential segregation applied to the case of Chicago. Most of the empirical literature has focused exclusively the single neighborhood model, also known as the tipping point model and neglected a multineighborhood approach or a unified approach. The multi-neighborhood approach introduced spatial interaction across the neighborhoods, in particular we look at spatial interaction across neighborhoods sharing a border. An initial exploration of the data indicates that spatial contiguity might be relevant to properly analyse the so call tipping phenomena of predominately non-Hispanic white neighborhoods to predominantly minority neighborhoods within a decade. We introduce an econometric model that combines an approach to estimate tipping point using threshold effects and a spatial autoregressive model. The estimation results from the model disputes the existence of a tipping point, that is a discontinuous change in the rate of growth of the non-Hispanic white population due to a small increase in the minority share of the neighborhood. In addition we find that racial distance between the neighborhood of interest and it surrounding neighborhoods has an important effect on the dynamics of racial segregation in Chicago.

Diversity and difference in the everyday lives of Ugandan street children: The significance of age and gender for understanding the use of space

Childhood is characterised by diversity and difference across and within societies. Street children have a unique relationship to the urban environment evident through their use of the city. The everyday geographies that street children produce are diversified through the spaces they frequent and the activities they engage in. Drawing on a range of children-centred qualitative methods, this article focuses on street children's use of urban space in Kampala, Uganda. The article demonstrates the importance of considering variables such as gender and age in the analysis of street children's socio-spatial experiences, which, to date, have rarely been considered in other accounts of street children's lives. In addition the article highlights the need for also including street children's individuality and agency into understanding their use of space. The article concludes by arguing for policies to be sensitive to the diversity that characterises street children's lives and calls for a more nuanced approach where policies are designed to accommodate street children's age and gender differences, and their individual needs, interests and abilities.

Assessing the discourses and practices of urban regeneration in a growing region

Most research on the discourses and practices of urban regeneration in-the UK has examined case studies located in areas of relative socio-economic distress. Less research has been undertaken on regeneration projects and agendas in areas characterise by strong economic growth. Yet, it is in such places that some of the best examples of the discourses, practices and impacts of contemporary urban regeneration can be. found. In some areas of high demand regeneration projects have used inner urban brownfield sites as locations for new investment. With the New Labour government's urban policy agendas targeting similar forms of regeneration, an examination of completed or on-going schemes is timely and relevant to debates over the direction that policy should take. This paper, drawing on a study of urban regeneration in one of England's, fastest growing towns, Reading in Berkshire, examines the discourses, practices and impacts of redevelopment schemes during the 1990s and 2000s. Reading's experiences have received national attention and have been hailed as a model for other urban areas to follow. The research documents the discursive and concrete aspects of local regeneration and examines the ways in which specific priorities and defined problems have come to dominate agendas. Collectively, the study argues that market-driven objectives come to dominate regeneration agendas, even in areas of strong demand where development agencies wield a relatively high degree of influence. Such regeneration plays a symbolic and practical role in creating new forms of exclusion and interpretations of place. (C) 2003 Elsevier Science Ltd. All rights reserved.

Diversity and difference in the everyday lives of Ugandan street children: The significance of age and gender for understanding the use of space

Childhood is characterised by diversity and difference across and within societies. Street children have a unique relationship to the urban environment evident through their use of the city. The everyday geographies that street children produce are diversified through the spaces they frequent and the activities they engage in. Drawing on a range of children-centred qualitative methods, this article focuses on street children's use of urban space in Kampala, Uganda. The article demonstrates the importance of considering variables such as gender and age in the analysis of street children's socio-spatial experiences, which, to date, have rarely been considered in other accounts of street children's lives. In addition the article highlights the need for also including street children's individuality and agency into understanding their use of space. The article concludes by arguing for policies to be sensitive to the diversity that characterises street children's lives and calls for a more nuanced approach where policies are designed to accommodate street children's age and gender differences, and their individual needs, interests and abilities.

Young caregiving and HIV in the UK: caring relationships and mobilities in African migrant families

Recent research in Sub-Saharan Africa has revealed the importance of children’s caring roles in families affected by HIV and AIDS. However, few studies have explored young caregiving in the context of HIV in the UK, where recently arrived African migrant and refugee families are adversely affected by the global epidemic. This paper explores young people’s socio-spatial experiences of caring for a parent with HIV, based on qualitative research with 37 respondents in London and other urban areas in England. In-depth semi-structured interviews were conducted with young people with caring responsibilities and mothers with HIV, who were predominantly African migrants, as well as with service providers. Drawing on their perspectives, the paper discusses the ways that young people and mothers negotiate the boundaries of young people’s care work within and beyond homespace, according to norms of age, gender, generational relations and cultural constructions of childhood. Despite close attachments within the family, the emotional effects of living with a highly stigmatised life-limiting illness, pressures associated with insecure immigration status, transnational migration and low income undermined African mothers’ and young people’s sense of security and belonging to homespace. These factors also restricted their mobility and social participation in school/college and neighbourhood spaces. While young people and mothers valued supportive safe spaces within the community, the stigma surrounding HIV significantly affected their ability to seek support. The article identifies security, privacy, independence and social mobility as key dimensions of African young people’s and mothers’ imagined futures of ‘home’ and ‘family’.

Simulations of the London urban heat island

We present simulations of London's meteorology using the Met Office Unified Model with a new, sophisticated surface energy-balance scheme to represent the urban surfaces, called MORUSES. Simulations are performed with the urban surfaces represented and with the urban surfaces replaced with grass in order to calculate the urban increment on the local meteorology. The local urban effects were moderated to some extent by the passage of an onshore flow that propagated up the Thames estuary and across the city, cooling London slightly in the afternoon. Validations of screen-level temperature show encouraging agreement to within 1–2 K, when the urban increment is up to 5 K. The model results are then used to examine factors shaping the spatial and temporal structure of London's atmospheric boundary layer. The simulations reconcile the differences in the temporal evolution of the urban heat island (UHI) shown in various studies and demonstrate that the variation of UHI with time depends strongly on the urban fetch. The UHI at a location downwind of the city centre shows a decrease in UHI during the night, while the UHI at the city centre stays constant. Finally, the UHI at a location upwind of the city centre increases continuously. The magnitude of the UHI by the time of the evening transition increases with urban fetch. The urban increments are largest at night, when the boundary layer is shallow. The boundary layer experiences continued warming after sunset, as the heat from the urban fabric is released, and a weakly convective boundary layer develops across the city. The urban land-use fraction is the dominant control on the spatial structure in the sensible heat flux and the resulting urban increment, although even the weak advection present in this case study is sufficient to advect the peak temperature increments downwind of the most built-up areas. Copyright © 2011 Royal Meteorological Society and British Crown Copyright, the Met Office

UK Zero Carbon Homes 2016 - Exemplary Development

In October 2008 UK government announced very ambitious commitment to reduce greenhouse gas emissions of at least 34% by 2020 and by 80% by 2050 against a 1990 baseline. Consequently the government declares that new homes should be built to high environmental standards which means that from 2016 new homes will have to be built to a Zero Carbon standard. The paper sets out to present UK zero carbon residential development achieving the highest, Level 6 of Code for Sustainable Homes standard. Comprehensive information is provided about various environmental aspects of the housing development. Special attention is given to energy efficiency features of the houses and low carbon district heating solution which include biomass boiler, heat pumps, solar collectors and photovoltaic panels. The paper presents also challenges which designers and builders had to face delivering houses of the future.

Local space for local people? Trends in the provision and management of urban outdoor recreation in the UK

This paper examines the growing trend in the UK towards the effective privatisation of formerly public open space and the relationship of this trend to the recent shifts in public sector management. A case study of Reading, England, illustrates the growing cultural and spatial dysfunction, particularly in terms of the declining knowledge and use of the town's urban gardens by the local population. Where once the gardens were a focus of social activity, therefore, they are now a largely irrelevant site of urban decline. In contrast to central urban space, it is clear that other types of open space in other areas can still assume a significance in peoples' lives. In many cases the use of these areas illustrates a counter cultural position in which the consumerism of the city management is actively being resisted. The paper concludes that while there appear to be ways in which local space could be reclaimed for local people, the power to achieve this lies predominantly in the same hands as those responsible for appropriating central space to the imperative of the market in the first instance