首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We all know that the normal human daily cycle of activity is of some 748 hours’ sleep alternating with some 16,417 hours’ wakefu
We all know that the normal human daily cycle of activity is of some 748 hours’ sleep alternating with some 16,417 hours’ wakefu
admin
2013-01-20
34
问题
We all know that the normal human daily cycle of activity is of some 748 hours’ sleep alternating with some 16,417 hours’ wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified.
The question is no mere academic one. The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakeful-ness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts are changed every week: a person may work from 12 midnight to 8 a. m. one week, 8 a. m. to 4 p. m. the next, and 4 p. m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to an- other, so that much of his time is spent neither working nor sleeping very efficiently.
The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night shift workers was carried out by Brown in 1957. She found a high incidence of disturbed sleep and other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work.
This latter system then appears to be the best long-term policy, but meanwhile some- thing may be done to relieve the strains of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People engaged in normal day- time work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only adjust gradually back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at intervals of two hours throughout the period of wakefulness it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for Selection. So far, however, such a form of selection does not seem to have been applied in practice.
The main problem of the round-the*clock working system lies in ______.
选项
A、the inconveniences brought about to the workers by the introduction of automation
B、the disturbance of the daily cycle of workers who have to change shifts too frequently
C、the fact that people working at night are often less effective
D、the fact that it is difficult to find a number of good night workers
答案
B
解析
第二段最后一句提到,经常调整轮班方式意味着,那个人刚刚适应一种上班时间,他就不得不改换为另一种,结果,他既无法有效地睡眠,也无法有效地工作。
转载请注明原文地址:https://kaotiyun.com/show/vO2O777K
0
考博英语
相关试题推荐
Thesurveyshowedthat_____numbersof15-year-oldshadalreadysmokedtwentycigarettesaweek.
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecountry.(67)Admissionsofficersareporingessaysan
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecountry.(67)Admissionsofficersareporingessaysan
TheculturesofChinaandJapanhavesharedmanyfeatures,buteachhasusedthemaccordingtoitsnational______.
Thestatementwasanallusiontorecenttroubleswiththeagency’scomputers.
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Radiationist
Ifsustainablecompetitiveadvantagedependsonworkforceskills,Americanfirmshaveaproblem.Humanmanagementisnottradit
Nowhereinnatureisaluminumfoundfree,_____itsalwaysbeingcombinedwithelements,mostcommonlywithoxygen.
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
随机试题
驾驶人违反交通运输管理法规发生重大事故致人重伤、死亡,可能会受到什么刑罚?
血源性葡萄球菌肺炎应注意什么
在肺结核的并发症中,较常见的是
A.单纯性颈静脉炎B.颈静脉周围炎C.血栓性颈静脉炎D.化脓性颈静脉炎E.出血性颈静脉炎马,精神沉郁、食欲减退、体温升高、颈静脉沟温热,疼痛及弥漫炎性水肿,肿胀表面带有黄色渗出物,颈静脉不易触及。该病诊断为()
对于在噪声敏感建筑物集中区域内造成环境噪声污染的企业事业单位,限期治理。()
下列各项中,不通过“应交税费”科目核算的有()。
旅游者崴脚,伤后肿胀,可在24小时内每隔2小时1次反复热敷,或者用“好得快”喷洗伤处,内服云南白药。()
上司有一个紧急电子邮件要求秘书处理,秘书应该()。
[A]AmongthereasonsIwouldn’tsendmyownchildtoboardingschoolisthatbeingaroundone’sadolescentpeers24hoursaday
A、Thewomanhatesdrinkingsoda.B、Thewomanisdoingaresearchonsodaselling.C、Themanisasodalover.D、Theman’sfather
最新回复
(
0
)