Decentralization and polycentric spatial structure strategies are important ways to alleviate urban disease in China. However, whether the urban spatial structure is meeting expectations is still unknown. Taking the Beijing Metropolitan Area as a case, the author adopted a non-parametric method to identify the subcenters, then an employment density model was used to analyze the spatial changes ...

The City of Barcelona has a population of just over 1.5 million inhabitants. The Metropolitan Region Barcelona (RMB) extends to some 3,236 km and according to the 2001 Census has a population of almost 4.4 million inhabitants. In recent years the population of the City of Barcelona has been in decline, in contrast to marked demographic increases in the wider metropolitan area. Indeed the RMB ha...

Although amphibians have relatively high rates of road mortality in urban areas, the conditions under which traffic threatens the survival of local amphibian populations remain unclear. In the Sandhills region of North Carolina (U.S.A.), we counted living and dead amphibians along two transects (total length 165 km) established on roads in areas with varying degrees of urbanization. We found 26...

This conference paper presents an accident study investigating where fatal alcoholand drugrelated accidents occur with respect to traffic environment (i.e., urban versus rural), road type, speed limit, annual average daily traffic flow, and road category. The study uses data from indepth studies of fatal accidents and from the Swedish National Road Database. Accident data from the 2006–2009 per...

This paper presents an evaluation of the effects on road safety of new urban arterial roads in Oslo, Norway, and a synthesis of evidence from similar studies that have evaluated the safety effects of new urban arterial roads in other cities. A before-and-after study was made of four urban arterial road projects in Oslo. The study controlled for general accident trends in Oslo and for regression...

fast and unplanned city growth, has effects such as isolation of village societies, threatening urbancores and centers and small and weak societies, destruction of open spaces and open and natural regions. smart growthoffers a sustainable way for urban developing with appropriate use of available sources, increase of urban services,developing neighborhoods with different uses, making public tra...

Road traffic injuries and fatalities are increasing in Ghana. Police-collected crash and injury data for the period 1994-1998 were aggregated and analyzed using the MAAP5 accident analysis package developed by the Transport Research Laboratory, U.K. Published results of recent transport-related epidemiological and other surveys provided an additional data source. According to the 1994-1998 poli...

Roads are of important elements of urban infrastructure which directly and crucially affect the life of people in cities. The criticality of the roads network in urban areas justifies the efforts made to use remotely sensed data especially High Resolution Satellite Imagery (HRSI) to generate fast and accurate knowledge about road networks and to update road maps. Besides, on the way towards inv...

This study explores the potential effectiveness of metropolitan land cover change as a climate change adaptation strategy for managing rising temperatures in a large and rapidly warming metropolitan region of the United States. Through the integration of a mesoscale meteorological model with estimated land cover data for the Atlanta, Georgia region in 2010, this study quantifies the influence o...