Daniel Monsivais-Velazquez (Aalto)
Monday 2016-10-24 11.00 – 12.00
Lecture hall AS3, TUAS building
Seasonal, geographical and thermal influence on human resting patterns inferred from mobile phone data
We study influence of seasonally and geographically related daily dynamics of daylight and daily temperature on human resting or sleeping patterns using mobile phone data of a very large number of individuals. We characterize the two observed daily “resting” or inactivity periods for calling in the aggregated pattern of mobile phone using population, inferring it to represent the sleeping times of people in cities. We find that the nocturnal resting period is strongly influenced by the length of the daylight, and that its seasonal variation depends on latitude, such that for people living in cities lying in two parallels separated by eight degrees, the difference of the resting period between summer and winter for southern cities is almost twice the value for the northern cities. We also observe that the duration of the resting period taking place in the afternoons is influenced by the temperature, and that there is a threshold from which this influence sets on. Finally, we argue that yearly dynamics of the afternoon and nocturnal resting periods are entangled, in such a way that the total daily resting period is constant along the year.
Article in arXiv: https://arxiv.org/abs/1607.06341