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The concept of calculating averages of African age distributions is developed in an attempt to distinguish the effect of age and coverage errors in demographic surveys in Tropical Africa from real fluctuations in the age structure. The concept is also used to discern different patterns of age errors and omissions and to indicate the extent of these errors in African age data. The method described is applied to data from 50 surveys undertaken in Tropical Africa between 1950 and 1973.  相似文献   
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Infant mortality is a widely recognized social indicator that is a useful index of the relative socioeconomic condition of subgroups of the population of a developing country. In developed countries, a more appropriate indicator of mortality is the proportion of babies who die before they reach their 5th birthday. 3 birth cohorts are identified from data provided by the Indonesian Fertility Survey conducted in Java and Bali in 1976 in order to examine the trend in mortality: births occurring 15 or more years before the survey, 10-14 years before the survey, and 5-9 years before the survey. 4 characteristics of parents related to education, occupation and urban vs. rural residence are used to analyze child mortality trends. A table shows the estimates for various combinations of these characteristics. Child mortality has decreased, but more importantly, it has decreased most for parents on the low end of the socioeconomic scale. Either parent having secondary education appears to be the key factor in the experience of low child mortality, although as more parents achieve secondary education, another factor may emerge as more important.  相似文献   
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Conclusions Unlike McKenzie and Tullock, we do not know how personsshould treat their bodily organs or what is an ideal exit. That depends upon their utility goals, which are defined in output terms specific to the decision maker. We contend that the body is an input into the utility production process, and therefore, as with any input, it must be maintained and repaired at a level consistent with the output goals for maximization of utility. Thus, from this framework, it is quite consistent for a person to die with healthy organs without any thought of belief in reincarnation or the desire to bequeath one's bodily organs to others, or religious values. Self interest is all that must prevail.Also, the fact that there are interrelationships between the organs in the system, and at points these relationships take on fixed factor characteristics such that reduced levels of operation in one organ can create disorientation or coma or damage to other organs, means that the body cannot die as M-T suggest. Zero capacity for all organs at death is a technical impossibility as well as being inconsistent with the output goals of utility maximizers.  相似文献   
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The discussion of industrial democracy in Britain has exploded in the last few years, but the result has been to write an agenda which has still to be worked through, not to reveal a consensus which can be written into action at once.  相似文献   
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