Over the last few decades, in disciplines as diverse as economics, geography and complex systems, a perspective has arisen proposing that many properties of cities are quantitatively predictable due to agglomeration or scaling effects. Using new harmonized definitions for functional urban areas, we examine to what extent these ideas apply to European cities. We show that while most large urban ...

the increasing rate of urbanization and rate of population growth over the 20th century has led to various problems such as traffic congestion, air pollution, and lack of open and green spaces that have affected the cities and their citizen's life. this condition has led to increasing demands for more land use, homes, and work places, more public transport and mass transit systems and mode...

In current financial, economical and political crisis, with the progressive downgrading of the States and the world’s GDPs dropping, the strong flows of financial, social and relational capital that powered urban regeneration over the last fifteen years are no longer available to be tapped in on in an indiscriminate manner as it seems was the case until just a few years ago. The most dynamic ci...

Cities present new challenges and needs to satisfy and improve lifestyle for their citizens under the concept “Smart City”. In order to achieve this goal in a global manner, new technologies are required as the robotic one. But Public entities unknown the possibilities offered by this technology to get solutions to their needs. In this paper the development of the Innovative Public Procurement ...

Urban growth reduces open space in and around cities, impacting biodiversity and ecosystem services. Using land-cover and population data, we examined land consumption and open space loss between 1990 and 2000 for all 274 metropolitan areas in the contiguous United States. Nationally, 1.4 million ha of open space was lost, and the amount lost in a given city was correlated with population growt...

BACKGROUND Pregnant women were recruited into the Alberta Pregnancy Outcomes and Nutrition (APrON) study in two cities in Alberta, Calgary and Edmonton. In Calgary, a larger proportion of women obtain obstetrical care from family physicians than from obstetricians; otherwise the cities have similar characteristics. Despite similarities of the cities, the recruitment success was very different. ...

The post-industrial cities of America are rife with significant cultural heritage that contribute to the national historic narrative. Many of these cities have experienced issues associated with disinvestment and population loss stemming from changing globalizing economic forces beginning in the latter half of the 20th century, jeopardizing their urban cultural heritage as these cities face dec...

millennium, a type of air pollution called ground-level ozone threatens future growth. Texas cities that do not meet U.S. Environmental Protection Agency (EPA) standards for this type of pollution could face sharp restrictions on new businesses and could bear significant new environmental costs. Many Texas cities are either in nonattainment with EPA guidelines for ozone or close to it. Although...

Potentially influential spaces in the spatial networks of cities can be detected by means of the entropy participation ratios. Local (connectivity) and global (centrality) entropies are considered. While the connectivity entropy has a tendency to increase with the city size, the centrality entropy is decreasing that reflects the global connectedness of cities. In urban networks , the local and ...