The demographic cycle and optimal schooling choices

A model is developed that enables the authors to estimate the effects of demographic cycles on both earnings and schooling. The model is tested using data from the 1991 Korean Occupational Wage Survey. The results indicate that cohorts following large birth cohorts in the cycle choose relatively less formal schooling compared to pre-peak cohorts, and that post-peak cohorts also have lower incomes. This result concerning South Korea is consistent with findings from previous studies concerning the United States.     

Maximizing the potential of your systems

In the last two decades, manufacturing businesses throughout the United States have learned that an important factor affecting the productivity of their manufacturing systems when implementing manufacturing resource planning is the way they approach the implementation itself. Eighty percent of an implementation effort needs to be devoted to preparing people in the organization to use the system and only 20 percent should be devoted to purchasing the system.     

Patterns of age and coverage errors in Tropical African surveys

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.     

A note on the equality of distribution of child mortality: Java-Bali, 1950-1976

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.