Search results for "geog"
showing 10 items of 13905 documents
The impact of urban transformations on the morphology of streets networks
2017
This research takes place in the field of quantitative analysis of historical streets networks.During the last decades, many studies have used network analysis or space syntax approachin a diachronic perspective, either to observe the interdependence between networkconfigurations and land-use, or to explore the link between network configurations and knownurban phenomena, such as densification, dispersal or expansion. These researches often focuson one single transformation rather than on the long time evolution of networks. In this work,we will explore the evolution of the street network of Paris, between 1300 and 1871, and linkthis evolution to all the transformations that occurred in the…
Urban mobility and the spatial distribution of economic activities in Rio de Janeiro (Brazil)
2017
International audience; In developing countries such as Brazil, the economic growth is gradually improving the population's standard of living, resulting in major impacts on urban mobility, particularly with regard to motor vehicle access. Between 2001 and 2012, the total growth of the car fleet in Brazil was around 3.5 million (Rodrigues, 2013), with 5.4% of this growth only in the Metropolitan Area of Rio de Janeiro. Presently, the city is experiencing severe congestion episodes (Beyer, 2012), due to saturation of the main roads, and a fragmented and inefficient public transport system.For a country in economic development in the 21st century, it is very important to plan and monitor the …
Social Media as Platform for Stimulating Urban Changes
2016
Images have always been an important part of city planning – current images of place, images with planned improvements, maps and sketches. Some time ago all that was a private property of stakeholders like planner and client. But nowadays this confidentiality rather much has vanished – no copyrights or competition is noteworthy. Plans do not have their privacy anymore. They are exposed even before they got implemented. This article will display why city planners share the images of their ideas, of their dreams in public (mostly in blogs and social networks) – why it is important for them and what kind of feedback they are waiting for. This article is based on case study where 12 respondents…
Defining polycentric urban areas through commuting cohesion. Through commuting cohesion in France
2013
International audience; Though the visualization of the daily commuting patterns around French urban area, we identify subcentres of commuting activities, illustrating the emergence of new urban polycentric structures. Via computed metrics on these graphs and an associated diachronic approach on the census data for the years between 1975 and 1999, we analyze the topological structure of the graph series. This analysis demonstrates the combined small world and star topology present in the data.
Projet urbain et Jeux Olympiques: le cas d'Athènes 2004
2005
Beyond the international sporting event they represent, Olympic Games are also a real catalyst for urban change they cause or accelerating. Indeed, they can be seen as an organizational tool, development and equipment of the host cities who have to service all Games a range of sports facilities , transport , accommodation ... that support the effective course of the global event . 2004 marks the return of the Olympic Games on the territory where they were born ; Athens hosted the first games of the third millennium . However, the Greek capital is a framework especially since this ancient city , archaeological and architectural history so rich, is also recent capital and the diachronic prove…
Quartiere in transizione. Il caso di Danisinni (Palermo) tra marginalità socio-spaziale e rigenerazione di comunità
2019
Nelle città contemporanee sempre più complesse e i cui confini diventano sempre più labili, il rafforzamento degli aspetti spazio-relazionali esistenti può divenire il fulcro su cui innestare nuove pratiche e politiche urbane con ricadute multiscalari. A partire dal riconoscimento del quartiere come dimensione di prossimità il presente contributo è una occasione per riflettere sui processi di gestione comunitaria per la riqualificazione urbana che provano a rispondere alle sempre più precarie condizioni di vita delle grandi città. Il caso analizzato, all’interno della neoistituita città metropolitana di Palermo, riguarda il quartiere di Danisinni, in cui depressione spaziale e depressione s…
Connectivity of urban rivers and environmental justice
2018
With the explosion of urban waterfront revitalization projects in the developed world, it is timely to reflect on the relations between cities and their rivers: how the rivers influenced development of the cities, how cities have treated their riverfronts since 19th century, and how the spatial relations of city and river constrain and enable improved connectivity between urban populations and their rivers. Both celebrated as revitalizing neglected urban centers and criticized for displacing the disenfranchised populations, riverfront revitalization projects raise questions about what constitutes ‘restoration’ in cities, to what degree natural processes and ecological values can be restored…
Pathways for the amplification of agroecology in African sustainable urban agriculture
2020
A growing awareness that highly intensified agricultural systems have made a substantial worldwide contribution to the worsening of the resilience capacity of natural ecosystems has, over the last twenty years, brought general attention to agroecological management models. This aspect is even more evident in industrial agriculture, which is based on the use of multiple chemical products derived from non-natural synthesis. In more developed countries, a new idea of ecology linked to agricultural production has been increasingly developed and, for this reason, there has been a greater diffusion of differentiated agricultural models taking into consideration the environmental impact of product…
Emergence of scattered and leapfrog urban development : from analytical proof to complex simulation outputs with realistic calibration
2013
International audience
How neighbourhood interactions influence urban sprawl
2011
International audience