Based largely on the famous “visual cliff” paradigm, conventional wisdom is that crawling infants avoid crossing the brink of a dangerous drop-off because they are afraid of heights. However, recent research suggests that the conventional wisdom is wrong. Avoidance and fear are conflated, and there is no compelling evidence to support fear of heights in human infants. Infants avoid crawling or ...

A drop falling onto a fluid-fluid interface may not merge with it at once but may undergo a so-called partial coalescence cascade. Experimental observations of this phenomenon have revealed fascinating features of the process for Newtonian as well as polymeric fluids. In this paper, we describe numerical simulations of partial coalescence based on a phase-field method. Results show that partial...

On-demand systems in which passengers with similar routes can share a vehicle are expected to become relevant part of future mobility, thanks their flexibility and potential impact on reducing congestion. Nevertheless, due the long detours required by door-to-door scheme, they induce extra costs users terms delay. In this paper, we face design such system might be requested online walk towards/...

OBJECTIVE To determine the cost-effective operative strategy for coronary artery bypass surgery in patients above 70 years. DESIGN Randomized, controlled trial of 900 patients above 70 years of age subjected to coronary artery bypass surgery. Patients were randomized to either on-pump or off-pump coronary artery bypass surgery. Data on direct and indirect costs were prospectively collected. P...