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Although researchers have identified individual-level predictors of nonphysical bullying among children and youth, school-level predictors (i.e., characteristics of the school environment that influence bullying exposure) remain largely unstudied. Using data from a survey of 1,838 students in 21 Boston public high schools, we used multilevel modeling techniques to estimate the level of variation across schools in student reports of nonphysical bully victimization and identify school-level predictors of bullying. We found significant between school variation in youth reports of nonphysical bullying, with estimates ranging from 25-58%. We tested school-level indicators of academic performance, emotional well-being, and school safety. After controlling for individual-level covariates and demographic controls, the percent of students in the school who met with a mental health counselor was significantly associated with bullying (OR = 1.03, 95% CI = 1.01, 1.06). There was no significant association between school-level academic performance and perceptions of school safety on individual reports of bullying. Findings suggest that prevention and intervention programs may benefit from attending to the emotional well-being of students and support the importance of understanding the role of the school environment in shaping student experiences with bullying. 相似文献
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Using Frons Width to Differentiate Blow Fly Species (Diptera: Calliphoridae) Phormia regina (Meigen) and Protophormia terraenovae (Robineau‐Desvoidy)
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Sarah V. Langer B.Sc.F.S. Christopher J. Kyle Ph.D. David V. Beresford Ph.D. 《Journal of forensic sciences》2017,62(2):473-475
Protophormia terraenovae (Robineau‐Desvoidy) (Diptera: Calliphoridae) and Phormia regina (Meigen) (Diptera: Calliphoridae) are morphologically similar blow fly species commonly used for estimating postmortem intervals. Field collection and storage of adults can result in color changes, in particular on calypters and palps; often collected specimens show damage such as wing fray or fungal growth. We measured the frons width: total head width ratio using photographs (ImageJ version 1.49) to differentiate these two species. Both sexes were distinguishable to species, with the greatest difference between males: 12.34% P. terraenovae versus 1.62% P. regina, less so for females: 40.25% P. terraenovae, versus 33.65% P. regina. Incorporating this feature into future blow fly keys would help with distinguishing field‐caught specimens when other features are obstructed. 相似文献
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Over the past decade, much has been written about the results of reinventing government. Most research has examined the effects of executive or managerial perspectives. Using David Rosenbloom's competing perspectives model, we examine Medicaid managed care programs for children with special health care needs to illustrate the influence of legislative and judicial institutional perspectives on the reinvention movement. Legislative and judicial responses to the reinvention of Medicaid managed care reveal the outer limits of what managed care and related executive reforms can accomplish in a Constitutional system that is based on checks and balances among competing institutional perspectives. Furthermore, relative to Medicaid managed care, legislative and judicial responses conserve public responsibility to society's most vulnerable populations. In the long run, the balance of institutional perspectives and values—not managerial innovation per se—will influence public administration. 相似文献
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Alison Dunn 《The Modern law review》2008,71(2):247-270
Charities in the Victorian era were characterised by the notions of service and pressure, acting as a shield and a sword for social change. Charities continue to pursue such policies, but do so at the behest of state agendas on public service provision and civic engagement. This article examines the regulatory and policy challenges of the service and pressure dynamic, focusing upon the provision of public services by charities, considering the decision of the Charity Commission in the cases of Trafford and Wigan , and the hurdles faced by charities wishing to pursue a political agenda alongside the state's concern with protecting against terrorism. The article concludes by considering the arbitrary choice made within the regulatory framework between acceptable and unacceptable political conduct and the focus upon good governance in charities and the issues which arise under section 6(3)(b) of the Human Rights Act 1998. 相似文献
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Recent tragedies such as Hurricane Katrina, 9/11, and the 2008 Sichuan Earthquake have revealed a need for methods to evaluate and plan for the impact of extreme events on critical infrastructure. In particular, awareness has been raised of the threat that a major disruption will lead to cascading failures that cross boundaries between interdependent infrastructure sectors, greatly magnifying human and economic impacts. To assist in planning for such extreme events, researchers are developing modeling tools to aid in making decisions about how best to protect critical infrastructures. We present some of the capabilities of this modeling approach as well as some of the challenges faced in developing such applications based on our experience with the Critical Infrastructure Protection Decision Support System (CIPDSS) model, developed for use by the Department of Homeland Security. A set of disruptions to road and telecommunication infrastructures is implemented in CIPDSS and the modeled disruptions to the original infrastructure as well as cascading effects on other infrastructure sectors are discussed. These simulations provide insights into the potential of this approach. 相似文献