A new argument against cooling by convective air eddies formed above sunlit zebra stripes

There is a long-lasting debate about the possible functions of zebra stripes. According to one hypothesis, periodical convective air eddies form over sunlit zebra stripes which cool the body. However, the formation of such eddies has not been experimentally studied. Using schlieren imaging in the laboratory, we found: downwelling air streams do not form above the white stripes of light-heated smooth or hairy striped surfaces. The influence of stripes on the air stream formation (facilitating upwelling streams and hindering horizontal stream drift) is negligible higher than 1-2 cm above the surface. In calm weather, upwelling air streams might form above sunlit zebra stripes, however they are blown off by the weakest wind, or even by the slowest movement of the zebra. These results forcefully contradict the thermoregulation hypothesis involving air eddies

The impact of the Internet on professional relationships: the case of health care

This paper considers the impact of the internet on professional services, specifically healthcare services which have been characterised as asymmetrical in information and power distribution. For complex professional services the internet is primarily an information resource offering perceived parity with professionals. Based on interviews with healthcare professionals and website managers, this paper considers how professionals perceive the internet to be changing patterns of professional-consumer interaction and the nature of professional-consumer relationships. Manifest at service encounter level and health policy level, professionals perceived the evolving parameters of the consumer role to be generating a requirement for a fundamental revision of models of service delivery and professional roles