We have recently observed a convergence of technologies to foster the emergence of
lifelogging as a mainstream activity. Computer storage has become significantly cheaper …

A central tenet of close-contact or respiratory infection epidemiology is that infection patterns
within human populations are related to underlying patterns of social interaction. Until …

Current public health guidelines on physical activity and sleep duration are limited by a
reliance on subjective self-reported evidence. Using data from simple wrist-worn activity …

Purpose Accelerometers are a valuable tool for objective measurement of physical activity
(PA). Wrist-worn devices may improve compliance over standard hip placement, but more …

BACKGROUND: Studies have shown relationships between important health outcomes and
sedentary behavior, independent of physical activity. There are known errors in tools …

Background Accelerometers can identify certain physical activity behaviours, but not the
context in which they take place. This study investigates the feasibility of wearable cameras …

Existing activity tracker datasets for human activity recognition are typically obtained by
having participants perform predefined activities in an enclosed environment under …

This study provides a new test of time-use diary methodology, comparing diaries with a pair
of objective criterion measures: wearable cameras and accelerometers. A volunteer sample …

Purpose To assess validity of the Personal Activity Location Measurement System (PALMS)
for deriving time spent walking/running, bicycling, and in vehicle, using SenseCam as the …

Human memory is unquestionably a vital cognitive ability but one that can often be
unreliable. External memory aids such as diaries, photos, alarms and calendars are often …