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21.
A key goal in youth studies is to gain holistic understandings of what it means to be young. However, a significant impediment to achieving this has been the tendency of youth studies to develop along siloed and stratified subfields. In keeping with the goal of creating more productive dialogue between subfields in youth studies, this paper examines the intersections between research in youth citizenship and youth transitions to consider the fresh insights and cross fertilisations that such an analysis may yield. This examination reveals a sense of dissatisfaction in both subfields with traditional normative and linear models of citizenship and transitions which rely on step-wise and sequential notions of time. In response, the paper advances a new research agenda which posits more temporally, spatially and relationally-sensitive understandings of youth citizenship and transition. Drawing on Ingold (2007. Lines: A brief history. London: Routledge), this agenda proposes the use of three alternative metaphors – genealogical, wayfaring and threads – which could hold the potential to unsettle the normativity and linearity of previous youth transitions and citizenship frameworks, and thus provide deeper insights into what it means to live and to be young citizens in times of transition.  相似文献   
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Institutional review boards (IRBs) have expressed concerns that certain individuals or groups, such as participants who are younger, ethnic minorities, or who have certain psychological or personality traits, may be particularly distressed when participating in “sensitive topics” research. This study examined the effects of several demographic and individual difference factors (i.e., age, sex, ethnicity, religiosity, Big Five personality traits, and baseline psychological distress levels) on reactions to participation in sensitive topics research. Participants were 504 undergraduates who completed an extensive battery of either trauma/sex questionnaires or cognitive tests and rated their positive and negative emotional reactions and the perceived benefits and mental costs of participating. They also compared research participation to normal life stressors. Our findings indicated that individual difference and demographic risk factors do not increase participant distress after participating in sex/trauma research over and above that experienced after participating in traditionally minimal-risk cognitive tasks. Participants generally found research participation less distressing than normal life stressors and even enjoyable.  相似文献   
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This article proposes that by studying grievances as not only materially but also ideationally constituted claims, scholars can gain analytical leverage on puzzles of social movement emergence and development. This meaning-laden approach to grievances recognizes that the ideas with which some claims are imbued might be more conducive to motivating political resistance than others. The approach is inherently grounded in context—scholars begin by understanding the meanings that grievances take on in particular times and places. But it is also potentially generalizable; as scholars uncover the ways in which apparently different grievances may index similar ideas across time and place, those grievances can be categorized similarly and their potential relationship to social mobilization explored. Drawing on evidence from the 2000 Bolivian water wars, the article proposes that market driven threats to subsistence resources offer one such potential categorization.  相似文献   
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A three-parameter F approximation to the distribution of a positive linear combination of central chi-squared variables is described. It is about as easy to implement as the Satterthwaite-Welsh and Hall-Buckley-Eagleson approximations. Some reassuring properties of the F approximation are derived, and numerical results are presented. The numerical results indicate that the new approximation is superior to the Satterthwaite approximation and, for some purposes, better than the Hall-Buckley-Eagleson approximation. It is not quite as good as the Gamma-Weibull approximation due to Solomon and Stephens, but is easier to implement because iterative methods are not required.  相似文献   
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ABSTRACT

Objective: We assessed whether college-student characteristics associate with food security and fruit and vegetable (FV) intake and whether these associations differ in students in housing with and without food provision. Participants: 514 randomly-sampled students from a large, Midwestern, public university in 2012 and 2013 Methods: Ordered logistic regression tested how student characteristics associate with food security. Linear regression tested how student characteristics associate with FV intake. Analyses were stratified by housing type – that is, housing with food provision (dormitory, fraternity/sorority house, cooperative) vs. housing without food provision.Results: Only among those living in housing without food provision, males (p = 0.04), students without car access (p = 0.005), and those with marginal (p = 0.001) or low (p = 0.001) food security demonstrated lower FV intake. Conclusions: Housing with food provision may buffer the effects of student characteristics on food.  相似文献   
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Major natural disasters in recent years have had high human and economic costs, and triggered record high postdisaster relief from governments and international donors. Given the current economic situation worldwide, selecting the most effective disaster risk reduction (DRR) measures is critical. This is especially the case for low‐ and middle‐income countries, which have suffered disproportionally more economic and human losses from disasters. This article discusses a methodology that makes use of advanced probabilistic catastrophe models to estimate benefits of DRR measures. We apply such newly developed models to generate estimates for hurricane risk on residential structures on the island of St. Lucia, and earthquake risk on residential structures in Istanbul, Turkey, as two illustrative case studies. The costs and economic benefits for selected risk reduction measures are estimated taking account of hazard, exposure, and vulnerability. We conclude by emphasizing the advantages and challenges of catastrophe model‐based cost‐benefit analyses for DRR in developing countries.  相似文献   
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Correspondence to David Pentecost, Department of Child and Adolescent Mental Health, Finchley Memorial Hospital, Granville Road, London, N12 0JE. E-mail: david.pentecost{at}lineone.net Summary Four hundred and forty social work practitioners for children,including those of Guardian ad Litem status, were surveyed regardingtheir knowledge and perceptions concerning attention deficithyperactivity disorder (ADHD). Questionnaires were distributedto the social workers via managers in seven boroughs in thesouth-east of England. The majority of practitioners in thesample were able to correctly identify the key diagnostic criteriaclosely associated with the condition. Over a third of respondentswere unsure of the appropriateness of treatment with stimulantmedication while the large majority felt that psychosocial interventionsinvolving the families were appropriate. Length of post-qualifyingexperience was found to be a crucial variable influencing bothknowledge about ADHD and the preferences for interventions forthe condition. Less than three out of ten practitioners regardedit as important to involve the Children with Disabilities Teams(CDTs) in such cases and a similar proportion were unaware oflocal resources that may support these children and their families.The results are discussed in relation to previous studies, implicationsfor social work practice and training and the role of CDTs inthe field.  相似文献   
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