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21.
This paper reports a qualitative analysis of data from a study of masculinity in 11–14 year old boys attending twelve London schools. Forty-five group discussions ( N = 245) and two individual interviews ( N = 78) were conducted. The findings indicate that boys' experiences of school led them to assume that interviews would expose them to ridicule and so threaten their masculinity. Boys were generally more serious and willing to reveal emotions in individual than in group interviews. A key theme in boys' accounts was the importance of being able to present themselves as properly masculine in order to avoid being bullied by other boys by being labeled "gay." The ways in which boys were racialized affected their experiences of school.  相似文献   
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The relation between citizenship and labor market position is complex. Besides a causal impact from citizenship towards labor market position, several selection mechanisms may cause particular immigrants to choose for naturalization. We investigate the empirical relation on the basis of German and Dutch survey data. For the Netherlands we find a positive relation between citizenship and labor market position, while for Germany we find mixed results as citizenship is negatively related to tenured employment. The contrasting results may be explained by institutional differences. In Germany, economic self-reliance is more strictly required for naturalization than in the Netherlands. This may lead to a stronger incentive to naturalize for workers with a temporary contract in Germany.  相似文献   
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Drawing on relevant literature from a diverse range of academic disciplines we present a conceptual framework intended to further our understanding of perceptions and expectations of price changes and inflation. Based on this framework, we provide a detailed review of the literature and an analysis of open issues in current research. The review is primarily concerned with individuals’ perceptions and expectations of price changes and inflation, which can influence individuals’ economic behaviour (e.g. spending and saving decisions). The main insight from the review is that while consumers may have a limited ability to store and recall specific prices, and even succumb to a number of biases in the way in which they form perceptions and expectations of global price changes, they do seem to have some feel for, and ability to judge and forecast, inflation. How they achieve this, however, is still an open question, although plausible explanations have been proposed. While much important research has been undertaken and significant progress made in our understanding of the psychology of inflation, there remain many unanswered questions and interesting avenues for future research, which are discussed in the final part of the paper.  相似文献   
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Community-based rehabilitative exercise programs might be an effective means to improve functional outcomes for hip-fracture patients. The purpose of this study was to evaluate the effectiveness of a community exercise program (CEP) for older adults recovering from hip fracture. Twenty-five older adults (mean age 80.0 +/- 6.0 years; 24 women; 71 +/- 23 days post-hip fracture) participated in this pilot study (17 exercise, 8 control). The CEP involved functional stepping and lower extremity-strengthening exercises. Control participants received only standard outpatient therapy. Measures of functional mobility, balance confidence, falls efficacy, lower extremity strength, and daily physical activity were evaluated at baseline and at 16 weeks. Improvements for self-reported physical activity, mobility, balance, and knee-extensor strength were observed for the CEP group. This study demonstrated that a CEP is beneficial for community-dwelling older adults post-hip fracture.  相似文献   
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Scour (localized erosion by water) is an important risk to bridges, and hence many infrastructure networks, around the world. In Britain, scour has caused the failure of railway bridges crossing rivers in more than 50 flood events. These events have been investigated in detail, providing a data set with which we develop and test a model to quantify scour risk. The risk analysis is formulated in terms of a generic, transferrable infrastructure network risk model. For some bridge failures, the severity of the causative flood was recorded or can be reconstructed. These data are combined with the background failure rate, and records of bridges that have not failed, to construct fragility curves that quantify the failure probability conditional on the severity of a flood event. The fragility curves generated are to some extent sensitive to the way in which these data are incorporated into the statistical analysis. The new fragility analysis is tested using flood events simulated from a spatial joint probability model for extreme river flows for all river gauging sites in Britain. The combined models appear robust in comparison with historical observations of the expected number of bridge failures in a flood event. The analysis is used to estimate the probability of single or multiple bridge failures in Britain's rail network. Combined with a model for passenger journey disruption in the event of bridge failure, we calculate a system‐wide estimate for the risk of scour failures in terms of passenger journey disruptions and associated economic costs.  相似文献   
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Fantasy sports, particularly the daily variety in which new lineups are selected each day, are a rapidly growing industry. The two largest companies in the daily fantasy business, DraftKings and Fanduel, have been valued as high as $2 billion. This research focuses on the development of a complete system for daily fantasy basketball, including both the prediction of player performance and the construction of a team. First, a Bayesian random effects model is used to predict an aggregate measure of daily NBA player performance. The predictions are then used to construct teams under the constraints of the game, typically related to a fictional salary cap and player positions. Permutation based and K-nearest neighbors approaches are compared in terms of the identification of “successful” teams—those who would be competitive more often than not based on historical data. We demonstrate the efficacy of our system by comparing our predictions to those from a well-known analytics website, and by simulating daily competitions over the course of the 2015–2016 season. Our results show an expected profit of approximately $9,000 on an initial $500 investment using the K-nearest neighbors approach, a 36% increase relative to using the permutation-based approach alone. Supplementary materials for this article are available online.  相似文献   
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The report by the Stiglitz Commission on the Measurement of Economic Performance and Social Progress highlighted the idea that sustainability in essence is about quality of life. This paper discusses and elaborates this notion. It argues that sustainable development should be seen as a process which does not focus on economic development alone, but which also includes well-balanced ecological and social development. Social aspects of sustainability deserve attention because of their instrumental and intrinsic relevance. A society needs a sense of community and commitment. The presence of social capital is very important for the liveability of a society. It is argued that the amount of social capital may fluctuate over time. This means that in the long term, future societies may be better in a social respect (more trust, more participation, less inequality) than today’s. Ensuring social sustainability is thus not only a matter of ensuring that present social cohesion is preserved, but also ensuring that this cohesion will increase or improve. The paper ends by addressing lines of research on social sustainability. The following research themes are mentioned: (1) Quality of life, social capital and social cohesion in a longitudinal perspective. (2) ‘Sustainability of what, why and for whom?’ Sustainability as an issue of choice: trade-offs. (3) Civil society and governance aspects of sustainability. (4) Public perceptions, values and opinions with regard to sustainability issues and (5) Fairness and inequality in relation to sustainability policy, both nationally and internationally.  相似文献   
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