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991.
How accurate are survey-based measures of social media use, in particular about political topics? We answer this question by linking original survey data collected during the U.S. 2016 election campaign with respondents’ observed social media activity. We use supervised machine learning to classify whether these Twitter and Facebook account data are content related to politics. We then benchmark our survey measures on frequency of posting about politics and the number of political figures followed. We find that, on average, our self-reported survey measures tend to correlate with observed social media activity. At the same time, we also find a worrying amount of individual-level discrepancy and problems related to extreme outliers. Our recommendations are twofold. The first is for survey questions about social media use to provide respondents with options covering a wider range of activity, especially in the long tail. The second is for survey questions to include specific content and anchors defining what it means for a post to be “about politics.” 相似文献
992.
AbstractNonseparable household modelsoutline the interlinkage between agricultural production and household consumption, yet empirical extensions to investigate the effect of production on dietary diversity and diet composition are limited. While a significant literature has investigated the calorie-income elasticity abstracting from production, this paper provides an empirical application of the nonseparable household model linking the effect of exogenous variation in planting season production decisions via climate variability on household dietary diversity. Using degree days, rainfall and agricultural capital stocks as instruments, the effect of production on household dietary diversity at harvest is estimated. The empirical specifications estimate production effects on dietary diversity using both agricultural revenue and crop production diversity. Significant effects of both agricultural revenue and crop production diversity on dietary diversity are estimated. The dietary diversity-production elasticities imply that a 10 per cent increase in agricultural revenue or crop diversity result in a 1.8 per cent or 2.4 per cent increase in dietary diversity respectively. These results illustrate that agricultural income growth or increased crop diversity may not be sufficient to ensure improved dietary diversity. Increases in agricultural revenue do change diet composition. Estimates of the effect of agricultural income on share of calories by food groups indicate relatively large changes in diet composition. On average, a 10 per cent increase in agricultural revenue makes households 7.2 per cent more likely to consume vegetables, 3.5 per cent more likely to consume fish, and increases the share of tubers consumed by 5.2 per cent. 相似文献
993.
Kevin Malseed 《The Journal of peasant studies》2013,40(2):365-391
This paper examines repression and state–society conflict in Burma through the lens of rural and urban resistance strategies. It explores networks of noncompliance through which civilians evade and undermine state control over their lives, showing that the military regime's brutal tactics represent not control, but a lack of control. Outside agencies ignore this state–society struggle over sovereignty at their peril: ignoring the interplay of interventions with local politics and militarisation, and claiming a ‘humanitarian neutrality’ which is impossible in practice, risks undermining the very civilians interventions are supposed to help, while facilitating further state repression. Greater honesty and awareness in interventions is required, combined with greater solidarity with villagers' resistance strategies. 相似文献
994.
Kevin A. Wright Byungbae Kim Laurie Chassin Sandra H. Losoya Alex R. Piquero 《Journal of youth and adolescence》2014,43(10):1781-1799
Serious youthful offenders are presented with a number of significant challenges when trying to make a successful transition from adolescence to adulthood. One of the biggest obstacles for these youth to overcome concerns their ability to desist from further antisocial behavior, and although an emerging body of research has documented important risk and protective factors associated with desistance, the importance of the neighborhoods within which these youth reside has been understudied. Guided by the larger neighborhood effects on crime literature, the current study examines the direct and indirect effects of concentrated disadvantage on youth reoffending among a sample of highly mobile, serious youthful offenders. We use data from Pathways to Desistance, a longitudinal study of serious youthful offenders (N = 1,354; 13.6 % female; 41.4 % African American, 33.5 % Hispanic, 20.2 % White), matched up with 2000 Census data on neighborhood conditions for youth’s main residence location during waves 7 and 8 of the study. These waves represent the time period in which youth are navigating the transition to adulthood (aged 18–22; average age = 20). We estimate structural equation models to determine direct effects of concentrated disadvantage on youth reoffending and also to examine the possible indirect effects working through individual-level mechanisms as specified by theoretical perspectives including social control (e.g., unsupervised peer activities), strain (e.g., exposure to violence), and learning (e.g., exposure to antisocial peers). Additionally, we estimate models that take into account the impact that a change in neighborhood conditions may have on the behavior of youth who move to new residences during the study period. Our results show that concentrated disadvantage is indirectly associated with youth reoffending primarily through its association with exposure to deviant peers. Taking into account youth mobility during the study period produced an additional indirect pathway by which concentrated disadvantage is associated with goal blockage (i.e., the gap between belief in conventional goals and perceived potential to reach those goals), which was then associated with exposure to deviant peers and indirectly, reoffending behavior. We conclude that the neighborhood effects literature offers a promising framework for continued research on understanding the successful transition to adulthood by serious youthful offenders. 相似文献
995.
Melayne Morgan McInnes Orgul Demet Ozturk Suzanne McDermott Joshua R. Mann 《Journal of policy analysis and management》2010,29(3):506-525
Providing employment‐related services, including supported employment through job coaches, has been a priority in federal policy since the enactment of the Developmental Disabilities Assistance and Bill of Rights Act in 1984. We take advantage of a unique panel data set of all clients served by the South Carolina Department of Disabilities and Special Needs between 1999 and 2005 to investigate whether job coaching leads to stable employment in community settings. The data contain information on individual characteristics, such as IQ and the presence of emotional and behavioral problems, that are likely to affect both employment propensity and likelihood of receiving job coaching. Our results show that unobserved individual characteristics and endogeneity strongly bias naive estimates of the effects of job coaching. However, even after correcting for these biases, an economically and statistically significant treatment effect remains. © 2010 by the Association for Public Policy Analysis and Management. 相似文献
996.
Morgan Brigg 《Third world quarterly》2018,39(5):838-853
Moral common sense frames the relationship between privileged and at-risk populations underpinning contemporary Responsibility to Protect (R2P) discourse. This article develops an alternative by considering the relationship between archetypes of would-be rescuers and victims through Jean Baudrillard’s theorisation of symbolic exchange. Baudrillardian analysis connects personal morality and affective intersubjective symbolic exchange with the politics of international order. This leads, first, to an argument that current foundations for advocating R2P risk participating in a problematic moral economy of symbolic exchange between would-be rescuers and victims. Nonetheless, and secondly, the article deploys symbolic exchange to develop suggestions for partially re-figuring R2P’s humanitarian impulse by engaging ‘locally’ – both through one’s self (in the ethical relation suggested by Emmanuel Levinas) and with diverse forms of political order (following Jacques Rancière’s conception of politics). Doing so supports moves to engage a wide array of individual actors in a more interactive and less hierarchical form of R2P, to drive deeper consideration of local complexities of R2P through engagement with diverse local forms of political order, and to develop a more inclusive understanding of ‘humanity’ in order to bolster R2P’s normative foundations. 相似文献
997.
Chloé Avril Paulina F. Bolek Catherine Kevin Sandra Knowles Hasana Sharp 《澳大利亚女权主义者研究》2010,25(64):241-251
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Dr. Steven M. Thompson Dr John Thompson Jock Gardner Kevin S. Colglazier 《Cambridge Review of International Affairs》1989,3(2):55-76
Richard Nixon, 1999: victory without war
(New York: Simon and Schuster, 1988; London: Sidgwick and Jackson, 1988)
Anders Stephanson, Kennan and the Art of Foreign Policy. (Harvard University Press, Cambridge, Massachusetts, 1989, pp. xiv + 380, £27.50)
Jacques S. Gansler, Affording Defense. (MIT Press, Cambridge, Massachusetts, 1989, £22.50)
John D. Steinbruner (ed.), Restructuring American Foreign Policy. (The Brookings Institute, Washington, 1989, pp. 260, £8.75 (paperback) & £23.95 (cloth)) 相似文献