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141.
142.
Wendy Kliewer Lenn Murrelle Elizabeth Prom Melva Ramirez Patricia Obando Luis Sandi Maria Del Carmen Karenkeris 《Journal of research on adolescence》2006,16(3):455-478
Associations between witnessing serious violence and drug use, and the protective influences of family cohesion and parental monitoring, were investigated among 9,840 adolescents (50.5% female, M age=15.29 years, SD=1.76) living in Panama and Costa Rica. After accounting for demographics and parental and sibling substance use, witnessing serious violence was associated with greater drunkenness, tobacco use, number of illicit drugs used, and problems with drugs and alcohol. In every analysis, exposure to violence was associated with more drug use, while family cohesion and parental monitoring attenuated risk. Further, family cohesion and parental monitoring exerted a protective‐stabilizing effect on number of illicit drugs used and on problems with drugs and alcohol. There were few interactions with age. Implications for prevention are discussed. 相似文献
143.
André I. Khuri 《Journal of applied statistics》2005,32(9):887-908
Slack-variable models are compared against Scheffé's polynomial model for mixture experiments. The notion of model equivalence and the use of various diagnostic measures provide effective tools in making such comparisons, particularly when the experimental region is highly constrained. It is demonstrated that the choice of the best fitting model, through variable selection, depends on which mixture component is selected as a slack variable, and on the size of the fitted model. In addition, the equivalence of two well-known representations of a complete mixture model is shown to be valid. Two numerical examples are presented. 相似文献
144.
This article explores why women delay childbearing and increase their likelihood to remain childless in Spain, Italy, West
Germany and France. We take a macro–micro perspective and show that national institutions influence women’s life transitions,
in particular partnership and motherhood. For coupled women, we find two alternative modes out of childlessness. In countries
with high direct and indirect child costs, like Spain and Italy, entering a male-breadwinner couple or occupying a stable
and high-income position facilitates motherhood, while in the French context motherhood is most likely in a dual-earner partnership.
相似文献
145.
146.
Dans cette étude, nous examinons les répercussions sociales de la mondialisation dans une perspective culturelle. Notre analyse porte sur le conflit qui existe entre le discours sur la mondialisation et les priorités locales, entre les droits de l'individu et les engagements des pouvoirs publics ainsi que sur la difficulté de trouver de nouveaux points d'ancrage de l'identité culturelle dans un contexte où les frontières territoriales entre les États s'effacent et où les idées de progres, de modernité et d'évolution se sont érodées. Ces traits accompagnent la transformation amorcée dans le cadre des relations complexes et hégémoniques qui caractérisent aujourd'hui le système mondial. Ce conflit et ces problèmes demeurent un axe fondamental du débat politique. Nous suggérons que les différentes formes de participation se traduisent de diverses façons dans le champ de l'expression politique et dans Interprétation des exigences sociales et des droits, et influent sur la vie publique à la veille du XXIesiécle. This article explores the social implications of globalization as cultural vision. Discussion bears upon the tension between the discourse of globality and local priorities, of individual rights and public commitments, and upon the problems of finding new ways for grounding identities as territorial state boundaries are weakened and the ideas of progress, modernity and evolutionary perspectives are eroded as part of a process of change initiated in the developed and hegemonic settings of the world system. It is claimed that these tensions and problems remain a crucial axis of political debate. It is suggested that different patterns of participation meld in manifold ways into recreated forms of political will and varied interpretations of social claims on and rights to affect the shaping of public life at the turn of the century. 相似文献
147.
148.
In the presence of covariate information, the proportional hazards model is one of the most popular models. In this paper,
in a Bayesian nonparametric framework, we use a Markov (Lévy-driven) process to model the baseline hazard rate. Previous Bayesian
nonparametric models have been based on neutral to the right processes, which have a number of drawbacks, such as discreteness
of the cumulative hazard function. We allow the covariates to be time dependent functions and develop a full posterior analysis
via substitution sampling. A detailed illustration is presented. 相似文献
149.
Low back pain is a costly and incapacitating musculoskeletal disorder. Prospective studies documenting the capacity of work-related factors to predict chronicity are few in number, the methodology used is very diversified, and the results obtained diverge. The aim of the present study is to investigate the capacity of work-related objective (non-psychosocial) and psychosocial factors to predict chronic disability related to low back pain. A longitudinal prospective study with two measurement times was carried out. The sample (N = 258) consisted of workers with subacute low back pain who were on sick leave and receiving compensation from the CSST (Quebec Workers' Compensation Board). Of all the work-related variables measured, perceived stress and fears and beliefs about work were associated with return to work status at the six-month follow-up. The results obtained show the importance of considering fears and beliefs about work when identifying people in the subacute phase of low back pain who are at risk of developing chronic disability. 相似文献
150.
Collective and Unitary Models: A Clarification 总被引:3,自引:0,他引:3
Martin Browning Pierre-André Chiappori Valérie Lechene 《Review of Economics of the Household》2006,4(1):5-14
In this note we identify and clarify a confusion that has arisen in the literature about the exact relationship between unitary
and collective models and what enters the Pareto weight and the sharing function. We suggest that we should denote as ‘unitary’
any model that leads to outcomes that satisfy the Slutsky conditions whether or not these outcomes depend on distribution
factors. In particular, income pooling is neither necessary nor sufficient for a unitary model. We also show that the presence
of prices or total expenditure in the sharing rule cannot be used as a test for a unitary model.
相似文献
Valérie LecheneEmail: |