Physical activity monitoring algorithms are often developed using conditions that do not represent real-life activities, not developed using the target population, or not labelled to a high enough resolution to capture the true detail of human movement. We have designed a semi-structured supervised laboratory-based activity protocol and an unsupervised free-living activity protocol and recorded...

OBJECTIVES To adapt and refine a previously-developed youth-specific algorithm to identify bedrest for use in adults. The algorithm is based on using an automated decision tree (DT) analysis of accelerometry data. DESIGN Healthy adults (n = 141, 85 females, 19-69 years-old) wore accelerometers on the waist, with a subset also wearing accelerometers on the dominant wrist (n = 45). Participants...

Secure spontaneous authentication between devices worn at arbitrary locations on the same body is a challenging, yet unsolved problem. We propose BANDANA, the first-ever implicit secure device-to-device authentication scheme for devices worn on the same body. Our approach leverages instantaneous variations in acceleration patterns from the user’s gait to extract alwaysfresh secure secrets. It e...

Wearing face coverings outside should be normalised because it may reduce transmission of SARS-CoV-2 in some situations—and encourage mask wearing indoors, where risks are greater—say Babak Javid, Dirk Bassler, and Manuel B Bryant. But Muge Cevik, Zeynep Tufekci, Stefan Baral argue that outdoor contributes very little to overall infection rates efforts ...

BACKGROUND The eco-epidemiological status of Chagas disease in the Monte Desert ecoregion of western Argentina is largely unknown. We investigated the environmental and socio-demographic determinants of house infestation with Triatoma infestans, bug abundance, vector infection with Trypanosoma cruzi and host-feeding sources in a well-defined rural area of Lavalle Department in the Mendoza provi...

objective: the prevalence rate of suicide among rural population in karaj and savojbolagh district for a period of 5 years (1991-95) have been studied. method: the data collected through the questionnaires, filled by health workers settled in 44 health houses in savojbolagh, and 21 health houses in karaj city. the population of these two districts were nearly 76804, and 26577 individuals respec...

This previously unreported Renaissance painting depicts a young woman with locally advanced breast cancer reaching out towards a healing potion in the church of Santa Maria della Grazia in Milan, that houses Leonardo da Vinci's Last supper. Today's potion may well contain neoadjuvant systemic therapy including trastuzumab that may allow breast conserving surgery and targeted intraoperative radi...

attention to interesting aspects of natural history. In most of my research projects I try to reserve a little bit of time for taking photographs. Our projects on waterbirds are ideal for combining data collection with a bit of photography — we observe our focal broods from floating, mobile blinds, in wetlands teeming with waterbirds. With a really good blind, it’s like being invisible — we oft...