OBJECTIVE To determine epidemiology of cardiovascular risk factors according to geographic distribution and macrolevel social development index among urban middle class subjects in India. METHODS We performed cross-sectional surveys in 11 cities in India during years 2005-2009. 6198 subjects aged 20-75 years (men 3426, women 2772, response 62%) were evaluated for cardiovascular risk factors. ...

I study U.S. gasoline prices following Hurricane Rita to show that short-lived geographical differences in the severity of wholesale gasoline price spikes are associated with long-lasting geographical differences in retail prices. In most U.S. cities, wholesale prices spiked significantly for roughly two weeks following the hurricane. However, in cities where this spike was particularly large, ...

The strong world-wide urbanisation trend calls for a repositioning of cities, especially the large cities with a global impact. These cities tend to become economic, logistic and political powerhouses and are increasingly involved in a competition on their integral performance. The present paper aims to trace to what extent and why some cities outperform others. Starting from an extensive datab...

This paper assesses the claim that sanctuary cities – defined as cities that expressly forbid city officials or police departments from inquiring into immigration status – are associated with post-hoc increases in crime. We employ a causal inference matching strategy to compare similarly situated cities where key variables are the same across the cities except the sanctuary status of the city. ...

Similar to physical cities, which emerged over many years in the physical world, we envision many kinds of large-scale “information cities” (iCities) to emerge over the Internet in the coming years. Some of these iCities will mimic small and large “physical” cities. They will provide local and global information and various valueadded services to inhabitants. Just like physical cities, these in...