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91.
Current biomedical research on sex selection techniques may soon offer couples the opportunity to choose the sex of their children with greater certainty. A technique planned for marketing by mid-1978 can increase the probability of bearing a son to as much as 0.90. However, couples who wish to improve their chances of bearing a daughter have no such opportunity. The purpose of this paper is two-fold. First, a decision-making model is provided which describes how couples should choose among alternative sex-selection methods so as to maximize the probability of bearing their desired number of sons and daughters. Second, the effect of the widespread use of sex-selection techniques on the population sex ratio is explored. It is shown that even if populations have unbiased sex preferences, or sex preferences biased towards daughters, the use of biased sex-selection technologies may result in very high population sex ratios.  相似文献   
92.
This paper explores the conceptual confusions characteristic of the practice of equal opportunities policies the workplace. The differences between‘liberal’and‘radical’approaches to policy making are identified and described. It is argued that, while these are conceptually distiner from one another, in practice they are routinely confused and conflated. In particular the preferred procedures of the liberal approach are widely assumed to result in the preferred outcomes of the radical approach. It is suggested that these confusions are not merely the product of intellectual error but arise from misunderstandings and deceptions generated in the struggle for power between participants in the work process  相似文献   
93.
The present study examines suicide ideation and attempts as well as reported levels of physical and sexual abuse among gang and nongang-involved incarcerated youth. The self-report survey data were collected from 334 males and 61 females who were incarcerated in Nevada youth correctional facilities in the summer of 1994. Over half (58.3 percent) of the males and nearly half (45.2 percent) of the females reported being gang members. Surprisingly high rates of abuse (more than 70 percent for both physical and sexual abuse) were found among the incarcerated females of this study. Females reported significantly more suicide attempts and were more likely to have been physically and sexually abused than males. Nongang males reported significantly more suicide attempts and were more likely to report sexual abuse than gang-involved males. Among the gang-involved delinquents, females reported significantly more suicide attempts than males. In addition, gang members who reported sexual abuse were more likely to have higher levels of suicide ideationand to have attempted suicide. Implications for youth correction specialists and social workers are discussed.The data for this study were collected under Grant #000616 from the Nevada Agricultural Experiment Station.  相似文献   
94.
95.
Wilks’ ratio statistic can be defined in terms of the ratio of the sample generalized variances of two non-independent estimators of the same covariance matrix. Recently this statistic has been proposed as a control statistic for monitoring changes in the covariance matrix of a multivariate normal process in a Phase II situation, particularly when the dimension is larger than the sample size. In this article we derive a technique for decomposing Wilks’ ratio statistic into the product of independent factors that can be associated with the components of the covariance matrix. With these results, we demonstrate that, when a signal is detected in a control procedure for the Phase II monitoring of process variability using the ratio statistic, the signaling value can be decomposed and the process variables contributing to the signal can be specifically identified.  相似文献   
96.
ABSTRACT

This paper analyzes the disjunctive temporalities of Occupy Philadelphia’s political constituencies. Drawing on both an ethnographic participant observation study of the Occupy Philadelphia movement and Philadelphia’s neoanarchist political communities, and on recent social scientific theorization of events, the paper argues that contradictory ideas about temporal timescales, momentum, duration, sequences, and rhythms of tactical and strategic action problematized interaction and coordination among movement participants. These points of coordinative disjuncture can be traced back to differences in participants’ ideas about prefigurative politics and strategic temporalities. Limning the temporal expectations and experiences of social movement participants, this paper contributes to the examination of both linkages and disjunctures between eventful temporalities experienced in moments of protest and in social movements with diverse timescales.  相似文献   
97.
The concept of power, as commonly formulated in contemporary sociology, is noted to lack any reference to the critical dimension of personal conative striving, or will-power. This deficiency is shown to stem from an overly cognitive conception of action, one in which acts are seen to embody choice and meaning but not emotion or effort, a view that has been reinforced by the use of trivial, easily-accomplished acts as examples to illustrate the nature of action. A perspective is advocated that redresses this imbalance; one that accepts that the immediate cause of all true actions is an act of will and that action is best conceived of as behaviour that individuals allow to happen to them. Power is then defined as an individual's ability to initiate and maintain action despite behavioural resistance, a conceptualization that closely links it to the concept of 'character'. This perspective on human conduct is then shown to be identical to that adopted by Weber in The Protestant Ethic and the Spirit of Capitalism .  相似文献   
98.
People bereaved by AIDS are likely to be in special need of support by reason of the social situations that accompany this type of loss and the risk of infection in the survivors. Problems associated with grief, depression, and the misuse of medicinal and other drugs are common. Special problems arise when the bereaved are partners, spouses, or parents of the deceased. Issues requiring special attention include emotional overload in both clients and counselors, judgmental attitudes, secrecy, anger, guilt, and the vicious circles that easily arise and can perpetuate problems.  相似文献   
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100.
This paper argues that the spread of free market economics throughout the world has generated unprecedented inequalities within and between nation states. This has led to the systematic exclusion of people with perceived impairments from the mainstream of economic and community life in almost all societies, the generation of an international disabled people’s movement, and their demand for legal frameworks with which to address the multiple deprivations encountered by people viewed as ‘disabled’. It is argued that the poverty and exclusion encountered by disabled people and other oppressed groups in all societies will not be eliminated without fundamental structural change at the international level.  相似文献   
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