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131.
This paper argues that the brunt of the transition-induced increase in Polish social protection expenditures during 1989-93 has been borne by social insurance arrangements, particularly pensions, rather than by social assistance schemes targeted to the poor or more temporary social safety net schemes. This is largely due to ease of access to social insurance and its more attractive benefit structure. Much of the recent efforts to reform social protection arrangements had an ad hoc nature and was driven by the need to alleviate looming financial distress. A major policy challenge is to avoid further burdening the social insurance system, particularly pensions, by problems that should be addressed by basic income support and emergency assistance policies or by general transfers (e.g. family allowances). Current reform needs are illustrated by using the pension system as an example. 相似文献
132.
François Poulin Antonius H. N. Cillessen Julie A. Hubbard John D. Coie Kenneth A. Dodge David Schwartz 《Social Development》1997,6(2):224-236
The general purpose of this study was to examine similarity between friends with respect to behavior. The specific goals were to consider; 1) different sources of evaluation (peer ratings and direct observations); 2) different social contexts (classroom and play group); and 3) different subtypes of aggressive behavior (proactive and reactive aggression). In the first phase of the study, sociometric assessments and peer evaluations of behavior were conducted in the school setting with third-grade boys and girls (n - 268). In the second phase, a subsample of boys participated in a series of play group sessions (n = 66). Direct observations and peer ratings of children's behavior were conducted in those sessions. Results showed in both social contexts a tendency towards similarity among friends, especially with respect to aggressive behavior. Separate analyses for subtypes of aggressive behavior revealed that the similarity hypothesis applied for proactive aggression but not for reactive aggression. 相似文献
133.
134.
Tania Abou-ezzeddine David Schwartz Lei Chang Yoolim Lee-Shin JoAnn Farver Yiyuan Xu 《Social Development》2007,16(1):106-127
This study examined the moderating role of positive peer relationships in the relation between behavioral or academic risk factors and victimization in Asian children's peer groups. We recruited 296 children (161 boys, 135 girls) from Tianjin, China (mean age of 11.5 years) and 122 children (66 boys, 56 girls) from Seoul, South Korea (approximate mean age of 11 years). The children's behavioral, academic and social functioning were assessed with a multi‐informant approach. Their behavioral and academic vulnerabilities were associated with their victimization by peers. However, these effects were mitigated for children who were able to establish positive relationships with their peers. Taken together, our findings highlight the potential buffering role of peer relationships in the cultural contexts examined. 相似文献
135.
136.
The study analyzes commitment rates to training schools, average length of stay and the facility utilization in the various states over the period 1979–1990. Based on a regression analysis of the data, we found that only the bed ratio, which is the number of beds per 100,000 eligible population, and average length of stay in training schools are significant in explaining the changes of commitment rate over the years. The paper focuses on the meaning of the variation between states on the commitment rate, the average length of stay and facility utilization might have in terms of correctional policy. There is also a discussion of our findings that the only significant variables in explaining commitment rate change were institutional variables that influence correctional policy. 相似文献
137.
Abstract This article examines the perceptions of male adolescent immigrants to Israel from the former Soviet Union (FSU) and what accounts for their using or refraining from violence. A grounded theoretical classification of four groups relating to continuity and discontinuity of violent and nonviolent behavior is presented and reasons provided for these behaviors in the host country, compared with the country of origin. Each group is described and analyzed by inductive parameters relating to self-perception, immigration, attitudes toward violence, and identification and acceptance of norm differences. Findings are based on semistructured interviews with 40 male adolescents who immigrated from the FSU to Israel. Youth who have immigrated due to ideological reasons, had control over the decision to emigrate, or were able to identify norm differences between the two countries adjusted well and were nonviolent in the receiving country. Youth whose families immigrated due to pragmatic considerations, who had little or no control over the decision to emigrate, had difficulty adjusting, or preferred to live by the norms they were used to in the FSU tended to be involved in violent behavior. The findings are presented in a grounded theoretical model and discussed in the context of theoretical concepts of “uprooting of meaning” for the youth in each of the four groups. 相似文献
138.
Jennifer Schwartz 《Journal of marriage and the family》2006,68(5):1291-1312
Utilizing 2000 data on 1,618 counties and seemingly unrelated regression, I assess whether family structure effects on homicide vary across family structure measures and gender. There is evidence of robust, multidimensional family structure effects across constructs reflecting the presence of two‐parent families: mother/father absence, shortages of employed men, and nonmarital/teen childbearing. Findings indicate mainly gender similarity in family structural sources of homicide, but subtle gender differences include stronger effects on male homicide patterns and female‐specific mediating effects of the care burden on homicide. Further exploration of diverse family constructs is warranted, but, methodologically, father absence is adequate as a control for family structure. Public policies and social programs aimed at strengthening families could lessen violence among both women and men. 相似文献
139.
Forward Links to Citing Articles Retraction . Risk Analysis 25: 6, 1683
In the framework of the APHEIS program (Air Pollution and Health: A European Information System), a health impact assessment of air pollution in 26 European cities was performed for particles of an aerodynamic diameter less than or equal to 10 μm (PM10 ). For short-term effects, it was based on overall estimates from the APHEA-2 project (Air Pollution and Health: A European Approach). These city-specific risk assessments require city-specific concentration-response functions, raising the question of which concentration-response is most appropriate. Estimates from city-specific models are more specific, but have greater uncertainty than those provided from multicity analyses. We compared several estimates derived from the city-specific analyses in cities that were part of the APHEA-2 project, as well as in a city that was not included in APHEA-2 but was part of the APHEIS project. These estimates were: the estimates from a local regression model, the adjusted estimates based on two significant effect modifiers identified through meta-regression models, and the city-specific empirical Bayes (shrunken) estimates and their underlying distribution. The shrunken and adjusted estimates were used to improve the estimation of city-specific concentration-response function. From these different estimates, attributable numbers of deaths per year were calculated. The advantages and limits of the different approaches are discussed through real data and in a simulation study. 相似文献
In the framework of the APHEIS program (Air Pollution and Health: A European Information System), a health impact assessment of air pollution in 26 European cities was performed for particles of an aerodynamic diameter less than or equal to 10 μm (PM
140.
Semiparametric latent variable regression models for spatiotemporal modelling of mobile source particles in the greater Boston area 总被引:1,自引:0,他引:1
Alexandros Gryparis Brent A. Coull Joel Schwartz Helen H. Suh 《Journal of the Royal Statistical Society. Series C, Applied statistics》2007,56(2):183-209
Summary. Traffic particle concentrations show considerable spatial variability within a metropolitan area. We consider latent variable semiparametric regression models for modelling the spatial and temporal variability of black carbon and elemental carbon concentrations in the greater Boston area. Measurements of these pollutants, which are markers of traffic particles, were obtained from several individual exposure studies that were conducted at specific household locations as well as 15 ambient monitoring sites in the area. The models allow for both flexible non-linear effects of covariates and for unexplained spatial and temporal variability in exposure. In addition, the different individual exposure studies recorded different surrogates of traffic particles, with some recording only outdoor concentrations of black or elemental carbon, some recording indoor concentrations of black carbon and others recording both indoor and outdoor concentrations of black carbon. A joint model for outdoor and indoor exposure that specifies a spatially varying latent variable provides greater spatial coverage in the area of interest. We propose a penalized spline formulation of the model that relates to generalized kriging of the latent traffic pollution variable and leads to a natural Bayesian Markov chain Monte Carlo algorithm for model fitting. We propose methods that allow us to control the degrees of freedom of the smoother in a Bayesian framework. Finally, we present results from an analysis that applies the model to data from summer and winter separately. 相似文献