the entrainment of a stably stratified layer into a turbulent mixed layer in a confined region has been studied in the laboratory for different richardson numbers, ri. the results include direct observation of turbulent characteristics and density measurements using two high precision salinity meters. the measurements include turbulence intensity, scale of eddies near the interface and energy s...

In this study a computerised system was used which continuously measured air pressure, interface pressure and pressure-time cycle characteristics of an alternating pressure air cushion (APAC), and calculated the time the interface pressure remained below three chosen thresholds of 20, 40 and 60 mm Hg. Ten healthy volunteers were used to evaluate the pressure relieving characteristics of four AP...

Some interface designers believe that giving a computer human characteristics is wrong, as it may confuse or mislead users. However it has been repeatedly proven that many users do interact with their computer socially, as if it were another ‘person’. If anthropomorphism is inevitable – should we embrace it? And if we insist on giving our computer a human personality, which personality is best?...