Demographic Determinants of Infant and Early Child Mortality: A Comparative Analysis

In this paper we examine the relative importance of a number of demographic determinants of infant and early child mortality using information from 39 World Fertility Survey countries. We include sex of the child, age of the mother at the time of the birth, birth order, mother's educational level and a number of indicators of spacing of adjacent births among the correlates of chances of survival for children below the age of five years. Mortality of firstborn children and of those born to teenage mothers is shown to be higher than average; that of later children and those of older mothers was not much higher than average, once other factors are controlled. Effects of poor birth-spacing persist even after other factors have been controlled, and are similar where a sib was born during the two years preceding the birth of the child, regardless of the survival status of that sib; however, mortality was higher when that sib had died, due to increased familial risks of mortality. Rapid subsequent births also raise mortality for their earlier sibs. The findings are generally remarkably consistent in a wide range of countries and associated mortality conditions, although attention is drawn to a few interesting geographically clustered exceptions which deserve further investigation. The study leaves little room for doubt that poor child-spacing is clearly linked to decreased survival chances.     

A framework for production rescheduling in sociotechnical manufacturing environments

No plan survives contact with reality. Despite the rich research base regarding handling uncertainty in production planning and control systems, there is an intellectual gap between theory and practice with regard to handling unforeseen events generated by internal and external factors, such as unforeseen machine downtimes and changes in demand. Motivated by longitudinal observations in two industrial settings and an analysis of the relevant literature, a framework for rescheduling decision-making in the face of unforeseen production events is proposed. In practical settings, the effectiveness of decisions depends on a set of situational factors. The findings of this research can be utilised further to provide guidelines for developing effective decision support principles and systems, addressing the needs of organisational decision-makers.     

Sexual Behavior in China: Trends and Comparisons

Dramatic political, economic, and social changes in China over the past several decades have been accompanied by much discussion in popular media and among academics of a fundamental transformation in Chinese sexual behavior. Several studies have examined current Chinese sexual behavior but have been limited to particular provinces or cities and have been based on non‐random samples. The potential threat of a generalized HIV epidemic in China highlights the dearth of population‐based information on current patterns of sexual behavior that could help design better intervention strategies and prevent misguided ones. This article uses data from the first national probability survey of adult sexual behavior in China completed during 1999–2000, along with a historical and literature review, to address three key questions: 1) Has there been a revolution in sexual behavior in China? 2) Is China unique compared to other countries in these transformations? 3) What are the implications of these findings for China's risk of a generalized HIV epidemic?     

Public Accounts: Defending Contested Practices

Little attention has been paid to how actors account for controversial institutional conduct or contested practices. Relying on a content analysis of letters to the editor, I explore how actors operating in the Habermasian “public sphere” justify the contested practice of linking Native American symbols with sports teams, and suggest that in their rejection of challengers to their definitions of the situation, authors create public accounts. Consisting primarily of justifications rather than excuses, these accounts are of four types: “denial of injury,” “assertion of benefit,” “claim of authority,” and “rejection of challenge.” For those who wish to conduct comparative analyses of contested practices, these concepts may prove useful.     

Cryptosporidium and Dairy Cattle in the Catskill/Delaware Watershed: A Quantitative Risk Assessment

We carried out a study to estimate the public health risk posed by dairy cattle located in New York City's Catskill/Delaware watershed, as measured by daily C. parvum-like oocyst loading. A Monte Carlo simulation model that takes into account the nature of the dairy cattle population within the target area, age-specific incidence/prevalence rates, as well as differential fecal production and oocyst-shedding intensity rates was used to address the objectives. Additionally, the model was designed to distinguish between zoonotic and nonzoonotic species/genotypes of Cryptosporidium. Total estimated daily C. parvum-like oocyst shedding across all age/production categories was estimated at 4.15 x 10(10). The zoonotic C. parvum comprised 93.5% of this load. It was estimated that preweaned calves produce 99.5% of the total daily C. parvum ocyst burden. The recently described nonzoonotic C. bovis was estimated to have a daily load of 2.2 x 10(9) oocysts across all age/production strata. C. parvum deer-like genotype was estimated to have a total daily load of 1.3 x 10(9) oocysts. The results of this study support earlier assertions that strategies aimed at reducing the cryptosporidial risk posed by dairy cattle to public health will be most efficacious if aimed at preweaned calves.     

The treatment of strabismus in the four to ten year old child

Approximately 6% of children have strabismus, a condition where the eyes are not straight and do not work together. The condition is described and the problems created are discussed, including its effect on appearance and performance. Treatments available to correct strabismus and their success rates are presented. Most children can be treated effectively to restore normal appearance and binocular function.a Diplomate in Binocular Vision and Perception, American Academy of Optometry, Fellow, College of Optometrists in Vision Development, and in private practice, Garden City, New York.     

Fear of crime among vulnerable populations: Homeless women

Are the factors associated with the fear of crime in the general population the same as those operating with especially vulnerable subgroups? If not, how and why are they different? Previous studies concerning the fear of crime have identified certain vulnerability factors as being associated with higher levels of fear. These include, for instance, being female, living in certain ghetto areas, and being elderly. Because many of these studies focused upon fear in the general population, however, they assumed a certain homogeneity of fear, whether it be among women, among the elderly, among Blacks, etc. They failed to make distinctions based upon relative degrees of vulnerability. They also generally neglected the notion of fear management—of coping. This research addresses these concerns. Two hundred homeless women (defined here as homeless adult females living on the streets), were interviewed in New York City. Among other things, they were asked about their crime risks and their crime fears. Results indicate that fear of crime is higher among those street women who have suffered past victimization. It is also slightly higher among those who perceived themselves to be more vulnerable. Perhaps most interesting is the finding that there is only a low correlation between self-perceived vulnerability to victimization and the fear of crime. This supports the proposition that these are two distinctive concepts; and, most importantly, it does so in the context of a particularly vulnerable population. Possible explanations of a seemingly paradoxical situation, namely high vulnerability existing side by side with a low fear of crime, are explored and discussed.     

恢复启蒙的探究

自然界因果系列从比较一般的现象出发,一步一步地走向那些从它们之中产生出来的逐渐复杂和特殊的现象。这就是在自然科学中一直进化发展的、发挥统一作用和非常富有成效的对世界的理解。人类关于自然界以及人类自身的知识越来越表现出知识统一的趋势。这种同一性根源于包括智力活动在内的一切活动在本质上都是物质的这一事实,这一事实必然导致文化相对主义的破产和自然科学、社会科学以及人文科学的最终整合。