Urban sustainable development and the challenge of French metropolitan strategies. GSPE Working Paper 11/04/2008

This article focuses on some salient issues of urban sustainable development in France, specifically with regard to six urban agglomerations: Bordeaux, Lille, Lyon, Montpellier, Nantes and Toulouse. The reticular dimension of these issues is analysed with reference to the ways a plurality of actors imagine, project and realise the construction of cities, rather than through sectoral points of view. This relational approach is divided according to a triple focus in which we successively address: firstly, the state of SD policies in the listed major French cities, in terms of contents and conception; secondly, their implementation from the perspective of instruments; and finally, the circuits of their realisation. Thus, urban SD appears within a (locally variable) set of linkages that place these issues firmly in areas of interrelations and intersections

Water infrastructure and social housing in Bogotá: an intersection between modern water management and social housing production

En la actualidad Bogotá afronta la presión de construir viviendas sociales en ecosistemas frágiles, áreas rurales o zonas propensas a las inundaciones, y al mismo tiempo proteger estas áreas para asegurar la capacidad de resiliencia del medio ambiente. Ante esta contradicción, la pregunta de investigación es: ¿Cómo se pueden modificar las tendencias de urbanización para crear una interacción que favorezca el manejo sustentable del agua? Con el fin de responder esta pregunta ésta comunicación presenta un análisis histórico de planes de alcantarillado y control hidráulico desarrollados desde 1990, junto con una revisión de proyectos de vivienda social representativos, e investiga la interacción entre estos dos campos. El análisis permite definir diferentes etapas en la transformación física del sistema hídrico que se basan en los cambios universales de paradigma en la gestión del agua e ilustra diferentes construcciones socio-culturales en torno a la naturaleza, además analiza la producción de vivienda en relación a la transformación del sistema hídrico.Currently, Bogotá faces the pressure to continue to urbanize fragile ecosystems, rural lands and flood prone areas with low-cost housing projects and simultaneously protect these areas to ensure environmental resilience. Given this contradiction, the question is how urbanization trends could be reversed into a constructive interplay with a revised water management? In order to that, this paper provides an historical analysis of representative water infrastructure projects, urban plans and housing projects in Bogotá developed after 1900 and investigates the interplays between this two realms. The analysis allows to define different stages in the physical transformation of the water system that are based on universal paradigm shifts in water management and illustrates different socio-cultural constructions around nature. It also analysis the production of social housing in relation to the water system transformation

Determination of lead dust fall rates during deconstruction of wood frame buildings in an urban region in the Northeastern United States

Title: Lead dust fall deposition rates during deconstruction of wood frame buildings in an urban region in the Northeastern United States. Objectives: Determine the lead dust fall deposition rate due to hybrid deconstruction (separation and removal of building components) of wood-frame structures, and compare that to the lead dust fall deposition rate from demolition (compression and collapse of building components). Scope: A city block with a total of 11 wood-frame structures was selected as the location for the deconstruction leadfall testing. Testing was done during the deconstruction of 7 of the 11 pre-1950 homes (mean construction year 1928, mean floor area 283 square meter). Method: During deconstruction, the lead deposition rate was measured by using the modified APHA 502 method (Mucha et al. 2009). Findings: The geometric mean deposition rate for the lead dust fall at the property perimeter from the houses using deconstruction was 61.3 ug/sg m/hr. Published values for deposition rates from demolition in Chicago (Jacobs, et al. 2013) are 59.0 and 152 ug/sq m/hr for homes with and without the use of dust suppression. The deposition rate during hybrid deconstruction is similar to the deposition rate during demolition when dust suppression is employed. Implications: Many older urban areas have abandoned buildings containing lead-based paint. Governments in these regions invest in removing these buildings, using a variety of methods. To avoid further lead contamination in the soil surrounding these buildings, methods which minimize the total lead dust fall must be employed. The proper quantification and evaluation of these methods will help policy makers with their decisions

Solar thermal power systems point-focusing thermal and electric applications projects. Volume 1: Executive summary

The activities of the Point-Focusing Thermal and Electric Applications (PETEA) project for the fiscal year 1979 are summarized. The main thrust of the PFTEA Project, the small community solar thermal power experiment, was completed. Concept definition studies included a small central receiver approach, a point-focusing distributed receiver system with central power generation, and a point-focusing distributed receiver concept with distributed power generation. The first experiment in the Isolated Application Series was initiated. Planning for the third engineering experiment series, which addresses the industrial market sector, was also initiated. In addition to the experiment-related activities, several contracts to industry were let and studies were conducted to explore the market potential for point-focusing distributed receiver (PFDR) systems. System analysis studies were completed that looked at PFDR technology relative to other small power system technology candidates for the utility market sector

Sustainable building design

Sustainable building design has become a wide and multidisciplinary research endeavor including mechanical, electrical, electronic, communication, acoustic, architectural, and structural engineering. It involves the participation of owners, contractors, suppliers and building users. There has been a lot of talk about sustainable buildings in the past few years. Most of the published research is concerned with saving energy and water and making the buildings more environmentally friendly by, say, reducing the carbon emissions. In this article, sustainable building design is reviewed from the viewpoint of structural engineering. Different strategies presented in the literature are summarized. Finally, the authors argue that the next big leap in sustainable building design should come from the integration of the smart structure technology including the use of hybrid and semi-active vibration controllers that can result in substantially lighter and more efficient structures

Of highland-lowland borderlands: local societies and foreign power in the Zagros-Mesopotamian interface

Narratives of civilization are spun from the juxtaposition of a civilized self with that of a barbarous other. Such an opposition is never more easily constructed than from the distinctiveness of lowland and mountain topographies, environments, and life-ways. Studies of highland-lowland relationships across different periods, places and disciplines also place the two realms in conceptual opposition and only rarely engage in depth with the interaction that must underwrite all negotiations of identity. We can trace the first attested construction of such a dichotomy in the texts and iconography that detail Mesopotamia’s interaction with the Zagros highlands in the later third and second millennia BCE. The recent opening of the Kurdish Region of north-east Iraq to international archaeological research now provides us with the opportunity to investigate Bronze Age communities located in transitional and highland landscapes and their relationships with the lowlands. In this paper we take a critical approach to the conceptualization of highland-lowland interaction in the past and in modern scholarship and formulate a bottom-up, archaeological approach for the investigation of highland-lowland encounters. Drawing on our recent work in the Upper Diyala/Sirwan river valley, we present crucial new settlement and material evidence, which challenges traditional interpretations of the region as a homeland of mountain tribes and begin to write a more balanced, local account of socio-cultural development and external interaction between this borderland region and a series of Bronze Age imperial powers

CITIES AND ACCESSIBILITY: THE POTENTIAL FOR CARBON REDUCTIONS AND THE NEED FOR NATIONAL LEADERSHIP

This article begins by outlining the elements that should be included in the framework for understanding how people interact with their built environments. Part II describes how the framework might be made operational through the use of an emerging technique called land-use transportation scenario planning. Part III assesses how well land-use transportation scenario planning fits within the dictates and limits of U.S. transportation law. The analysis ultimately reveals that it holds substantial promise as a tool that could lead to meaningful cuts in carbon emissions

Current state of the art and use case description on geofencing for traffic management

This report is a result of a literature review and document gathering focused on geofence use cases specific for road traffic management. It presents geofence use cases that are trialled or to be trialled, implemented use cases, as well as conceptual and potential future use cases, showing for which type of transport they are used and how geofence zones are applied or to be applied. The report was conducted in the project GeoSence – Geofencing strategies for implementation in urban traffic management and planning. It is a Joint programme initiative (JPI) Urban Europe project funded by European Union´s Horizon 2020, under ERA-NET Cofund Urban Accessibility and Connectivity and gather project partners from Germany, Norway, Sweden and UK. The goal is to present the current state of art, and describe use cases, based on the working definition of geofencing in the project, where geofence is defined as a virtual geographically located boundary, statically or dynamically defined. The study shows that for implemented and real-traffic trial use case, geofencing has been applied within private car transport, shared micro-mobility, freight and logistics, public bus transportation and ridesourcing. For the future use cases, geofencing has been tested or conceptually developed also for automated vehicles and shared automated mobility, among others. The report summarises main use cases and find them to answering to especially four challenges in traffic management: safety, environment, efficiency, and tracking and data collection. Some of the use cases however answer to several of these challenges, such as differentiated road charging, and the use cases in micro-mobility. Further, the system and functionality of the trialled and/or implemented use cases, show different types of regulation geofence use cases can be used for, from informing, assisting, full enforcement, incentivising and penalisation. Guidelines and recommendations so far form national authorities show that the existence of joint regulation or guidelines for the use of geofencing for different use cases is low – with some exceptions. Digital representation of traffic regulation will be crucial for enabling geofencing

Localizing Urban Design Traditions: Gated and Edge Cities in Curitiba

Gated communities and edge cities are new forms of space production and consumption that promote changes in the character of public space and citizens' participation in public life. This study unveils the phenomena of their creation as a paradoxical attempt to return to community. Curitiba's examples of gated communities and edge cities show that, despite being internationally showcased as a model of good planning and urban design, this metropolis has not been immune to the global capital pressures and urban design tendencies occurring in many urban areas throughout the world, thus signalling both the currency and trans-nationality of these issues