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191.
Students’ social psychological adjustment to school is an important determinant of achievement growth as well as school continuation and post-secondary educational attainment. Yet many students begin high school with low levels of efficacy and self-worth, and low levels of identification with and liking of school. In this study, we investigate the hypothesis that vocational education in high school provides disengaged students with an educational clean slate, leading to a recovery of engagement for at-risk students. Using propensity score models, we assess the relationship between vocational course taking and changes in effort, extracurricular participation, sense of belonging, interest in school, attitudes toward school and teachers, educational expectations, career aspirations, locus of control, and self-concept with the NELS:88 database.  相似文献   
192.
In this essay, we respond to Simon's article (2012). We discuss our view that therapy works best when therapists can match therapeutic interventions to the worldview of clients. We see this matching to client worldview as rooted in research evidence, and we suggest that therapists can practice authentically and effectively using more than one divergent therapy approach. We conclude the paper by pointing out points of disagreement we have with Simon's use of Davis and Piercy's (Journal of Marital and Family Therapy, 2007a; 33, 298; Journal of Marital and Family Therapy, 2007b, 32, 515) study, a study Simon uses to ground his arguments.  相似文献   
193.
Brazil has entered the world of development assistance, but with its own twist. This article argues that Brazil is taking a cross‐government policy approach to the provision of development assistance, and which includes recruitment of business interests. There is a genuine concern with global poverty alleviation in Brazil, but this does not preclude policy‐makers from using aid and development‐related activities to advance national interests. The added quirk that sets Brazil apart from Northern counterparts is that the provision of development assistance offers significant benefits in terms of building up international bureaucratic experience inside the country and helping national firms internationalise their market activities.  相似文献   
194.
In this article we address a number of visual narratives that represent physical disability in Kinshasa, D.R. Congo. Drawing on visual material that was collected before and during anthropological fieldwork (between 2010 and 2014) we offer an insight into the interrelation between representations and physical disability within a Congolese context, as represented in four documentaries. The text briefly reflects on representations of the ‘Other’ and wants to add a reflection on representations of disability that originate from an African urban context. Our examples are complemented with in situ analyses derived from fieldwork that question how particular narratives portray disability and dis(en)ablement within a Congolese socio-cultural context. Thus we invite to look beyond the images. Finally, the article adds a critical reflection about these visual narratives as dis/enabling through their specific construction of dis-ability.  相似文献   
195.
This study presents novel evidence on the relationship between sexual orientation and self‐employment. Using data from the 2001 and 2006 Census of Canada and the 2011 Canadian National Household Survey, we explore the propensity for self‐employment among same‐ and opposite‐sex couples. We examine the demographic, human capital, and family characteristics of coupled gay men and lesbians relative to their coupled heterosexual counterparts to offer potential mechanisms generating differences in rates of self‐employment. Our analysis further considers occupational variability in the likelihood of self‐employment. We find that gay men are less likely and lesbians more likely than heterosexuals to be self‐employed; however, there is significant variation across occupations. Gay men are more likely to be self‐employed in arts and culture, sales and service, and natural and applied sciences, but less likely in business, finance, and health‐related occupations. Lesbians are much more likely to be self‐employed in health‐related occupations, natural and applied sciences, and arts and culture. Marriage and having children are significant predictors of self‐employment for coupled heterosexual women but not lesbians. Cette étude présente des évidences empiriques concernant la relation entre l'orientation sexuelle et le travail indépendant. Utilisant des données provenant du Recensement du Canada de 2001 et de 2006, ainsi que l'Enquête nationale auprès des ménages (ENM) de 2011, nous explorons la tendance du travail indépendant parmi les couples de même sexe et ceux de sexe opposé. Ainsi, nous examinons les caractéristiques démographiques, du capital humain et familiales des couples gais et lesbiens par rapport à leurs homologues hétérosexuels, afin de démontrer une corrélation entre l'orientation sexuelle et la probabilité d’être travailleur indépendant – une causation qui nous semble évident et que nous analysons plus en profondeur. Nous concluons d'ailleurs que les hommes gais sont moins probables – et les lesbiennes plus probables – d’être travailleurs indépendants que les hétérosexuels. Cependant, il existe des variantes significatives entre les différentes occupations. Les hommes homosexuels tendent plutôt à être travailleurs indépendants dans les domaines des arts et de la culture, la vente et les services, ainsi que les sciences pures et les sciences naturelles. Par contre, ils le sont moins dans les domaines des affaires, de la finance et des domaines reliés à la santé. De leur côté, les femmes homosexuelles tendent plutôt à être travailleuses indépendantes dans les domaines reliés à la santé, aux sciences pures et aux sciences naturelles, ainsi qu'aux arts et la culture. Finalement, le fait d’être marié et d'avoir des enfants sont des indicateurs significatifs du travail indépendant pour les femmes en couples hétérosexuels, mais pas pour les lesbiennes.  相似文献   
196.
The geographic scale of Metropolitan racial segregation   总被引:5,自引:0,他引:5  
This article addresses an aspect of racial residential segregation that has been largely ignored in prior work: the issue of geographic scale. In some metropolitan areas, racial groups are segregated over large regions, with predominately white regions, predominately black regions, and so on, whereas in other areas, the separation of racial groups occurs over much shorter distances. Here we develop an approach—featuring the segregation profile and the corresponding macro/micro segregation ratio—that offers a scale-sensitive alternative to standard methodological practice for describing segregation. Using this approach, we measure and describe the geographic scale of racial segregation in the 40 largest U.S. metropolitan areas in 2000. We find considerable heterogeneity in the geographic scale of segregation patterns across both metropolitan areas and racial groups, a heterogeneity that is not evident using conventional “aspatial” segregation measures. Moreover, because the geographic scale of segregation is only modestly correlated with the level of segregation in our sample, we argue that geographic scale represents a distinct dimension of residential segregation. We conclude with a brief discussion of the implications of our findings for investigating the patterns, causes, and consequences of residential segregation at different geographic scales.  相似文献   
197.
The purpose of this article is to introduce a risk analysis framework to enhance the cyber security of and to protect the critical infrastructure of the electric power grid of the United States. Building on the fundamental questions of risk assessment and management, this framework aims to advance the current risk analysis discussions pertaining to the electric power grid. Most of the previous risk-related studies on the electric power grid focus mainly on the recovery of the network from hurricanes and other natural disasters. In contrast, a disproportionately small number of studies explicitly investigate the vulnerability of the electric power grid to cyber-attack scenarios, and how they could be prevented or mitigated. Such a limited approach leaves the United States vulnerable to foreign and domestic threats (both state-sponsored and “lone wolf”) to infiltrate a network that lacks a comprehensive security environment or coordinated government response. By conducting a review of the literature and presenting a risk-based framework, this article underscores the need for a coordinated U.S. cyber security effort toward formulating strategies and responses conducive to protecting the nation against attacks on the electric power grid.  相似文献   
198.
This study examines and analyzes marine accidents that have occurred over the past 20 years in the Black Sea. Geographic information system, human factor analysis and classification system (HFACS), and Bayesian network models are used to analyze the marine accidents. The most important feature distinguishing this study from other studies is that this is the first study to analyze accidents that have occurred across the whole Black Sea. Another important feature is the application of a new HFACS structure to reveal accident formation patterns. The results of this study indicate that accidents occurred in high concentrations in coastal regions of the Black Sea, especially in the Kerch Strait, Novorossiysk, Kilyos, Constanta, Riva, and Batumi regions. The formation of grounding and sinking accidents has been found to be similar in nature; the use of inland and old vessels has been highlighted as important factors in sinking and grounding incidents. However, the sequence of events leading to collision-contact accidents differs from the sequence of events resulting in grounding and sinking accidents. This study aims to provide information to the maritime industry regarding the occurrence of maritime incidents in the Black Sea, in order to assist with reduction and prevention of the marine accidents.  相似文献   
199.
We study a remanufacturing system that involves the ordering of a serviceable product and the remanufacturing of multiple types of returned products (cores) into the serviceable product. In addition to random demand for the serviceable product and random returned quantities of different types of cores in each time period, the remanufacturing yield of each type of core is also uncertain. By analyzing a multi‐period stochastic dynamic program, we derive several properties of the optimal ordering/remanufacturing policy. In addition to some insights, these properties can be used to reduce the search effort of the optimal policy. We also demonstrate that some existing results derived from related models no longer hold in remanufacturing systems with random yield. Recognizing the optimal ordering/remanufacturing policy is highly complex, we examine three simple heuristics that can be efficiently solved and implemented in practice. Among these three heuristics, our numerical analysis suggests that the heuristic that captures most of the yield uncertainty and future system evolvement as well as some of the properties of the optimal ordering/remanufacturing policy outperforms the other two heuristics.  相似文献   
200.
This study examined the process of establishing post homeless lives among 51 recently homeless youth in two major urban centers in Canada. A mixed methods strategy was employed to characterize this process. Quantitatively, a range of mental health, community integration, and quality of life measures were employed four times over the course of 1 year to describe how these indicators of wellbeing shifted in this period. It was found that over the course of 1 year gains were not made in community integration, quality of life and mental health were highly variable, and hope declined significantly. Further, it was found that youth in supported housing arrangements experienced better mental health and community integration. Qualitatively, we identified three major stages in the process of exiting homelessness. These stages included a period of substantial fluctuation and instability, a period of gaining a basic level of stability but being demoralized due to difficulties making progress with life goals, and a period of making some gains with life goals which cultivated a sense of hope. Progress across these stages, which took place in a timeframe considerably longer than 1 year, was characterized by a range of setbacks, individual and systemic challenges, and trauma which were addressed through a persistent effort facilitated by youth resilience and key supports.  相似文献   
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