TY  - JOUR
PY  - 2015//
TI  - Memory-endowed US cities and their demographic interactions
JO  - Journal of the Royal Society, Interface
A1  - Hernando, A.
A1  - Hernando, R.
A1  - Plastino, A.
A1  - Zambrano, E.
SP  - e20141185
EP  - e20141185
VL  - 12
IS  - 102
N2  - A quantitative understanding of cities' demographic dynamics is becoming a potentially useful tool for planning sustainable growth. The concomitant theory should reveal details of the cities' past and also of its interaction with nearby urban conglomerates for providing a reasonably complete picture. Using the exhaustive database of the Census Bureau in a time window of 170 years, we exhibit here empirical evidence for time and space correlations in the demographic dynamics of US counties, with a characteristic memory time of 25 years and typical distances of interaction of 200 km. These correlations are much larger than those observed in a European country (Spain), indicating more coherent evolution in US cities. We also measure the resilience of US cities to historical events, finding a demographical post-traumatic amnesia after wars (such as the American Civil War) or economic crisis (such as the 1929 Stock Market Crash).<p />  <p>Language: en</p>
LA  - en
SN  - 1742-5689
UR  - http://dx.doi.org/10.1098/rsif.2014.1185
ID  - ref1
ER  -