Lo que las telecos nos enseñan sobre las regiones
Telecommunications data in Britain, for instance, show that only about 9.5 percent of communications cross a line about 100 miles north of London. In Italy, only 7.8 percent of communications cross a line roughly along the northern border of the Emilio-Romagna region, above which lie the industrial and commercial metropolises of Milan and Turin. These invisible borders, the researchers say, help us grasp the social, civic, and commercial interactions that exist in contemporary nations, and may be of use to government officials and other policy experts.
Analysis of telecom data globally (shown above for Portugal) shows the extent to which communications networks (at left) may correspond to existing political or geographic regions (represented at right).