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Waterhouse J  Reilly T  Edwards B 《Journal of sports sciences》2004,22(10):946-65; discussion 965-6
International travel is an essential part of the life of elite athletes, both for competition and training. It is also becoming increasingly common among recreational sportspersons. Long-distance travel is associated with a group of transient negative effects, collectively referred to as 'travel fatigue', which result from anxiety about the journey, the change to an individual's daily routine, and dehydration due to time spent in the dry air of the aircraft cabin. Travel fatigue lasts for only a day or so, but for those who fly across several time zones, there are also the longer-lasting difficulties associated with 'jet lag'. The problems of jet lag can last for over a week if the flight crosses 10 time zones or more, and they can reduce performance and the motivation to train effectively. Knowledge of the properties of the body clock enables the cause of the difficulties to be understood (an unadjusted body clock), and forms the basis of using light in the new time zone to promote adjustment of the body clock. Sleep loss and its effects are important components of jet lag, and attempts to promote sleep by the use of melatonin and other hypnotics are also relevant. Sleep loss is also found in those who undertake challenges that involve long periods where the normal consolidated sleep of 8 h length is not possible. Advice on sleep regimens in such circumstances is given.  相似文献   
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The New Millennium Experience ‐ an exhibition on the theme of time sited in a fibre‐glass dome on the Greenwich Peninsula adjacent to the Prime Meridian ‐ was the centrepiece of Millennium celebrations in Britain. From its inception in the mid‐1990s ‘the Dome’ had been controversial for several reasons, not least of which was its financial viability were it not to prove very popular with the general public. Within weeks of opening, it emerged that the Dome was financially insecure to the point of possible bankruptcy. Largely funded by the National Lottery in the first place, four extra grants from that source were required in order to keep it open during the year 2000. The Dome was regarded widely as of dubious cultural value and a drain on public resources that might have been better spent elsewhere.

This chapter of Cultural Trends does not, strictly speaking, set out to confirm or refute these common criticisms of the Dome. Instead, it aims to establish the facts and figures concerning various aspects of the project as precisely as possible. This in itself is difficult to do since, for instance, the exact value of corporate sponsorship is impossible to ascertain due to commercial confidentiality, although it was quite a small proportion of the actual funding ‐ less than 20 per cent. Further complicating matters is polling evidence of high visitor approval for the Dome which must be set against its general damnation in the media.

In effect, the chapter traces a complex process whereby an ambitious cultural project was beset by a series of seemingly intractable problems from beginning to end, including eventual disposal and future use of the site. Whether the Dome is considered an abject failure or an under‐reported success, it certainly did not meet its official targets in terms of visiting, revenue and sponsorship.  相似文献   

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Editorial     
Jim Ellis 《Literacy》1987,21(3):143-143
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