We live in a world where digital trails of different forms of human activities compose big urban data, allowing us to detect many aspects of how people experience the city in which they live or come to visit. In this study we propose to enhance urban planning by taking into a consideration individual preferences using information from an unconventional big data source: dataset of geo-tagged pho...

During the last 30 years infant mortality in Greece has been falling dramatically. In 1960 of every 100 newly born infants, four died before their first birthday. By 1970 the rate had fallen to 3°/o, in 1980 it was 1-8%, and by 1987 infant mortality had come down to less than 1 2%. As the table shows, large reductions in infant mortality in Greece have occurred at a remarkable speed: within no ...

I had an auspicious start in public health: As a high school student in Westchester County, New York, I won a contest to be county public health commissioner for a day. At that time, my vague notions of public health were only that somehow it helped prevent diseases. As I prepare to retire from the position of Director of Public Health and Health Officer for our nation’s most populous county, I...

There is little knowledge available on the spatial behaviour of urban tourists, and yet tourists generate an enormous quantity of data (Big Data) when they visit cities. These data sources can be used to track their presence through their activities. The aim of this paper is to analyse the digital footprint of urban tourists through Big Data. Unlike other papers that use a single data source, t...