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排序方式: 共有186条查询结果,搜索用时 46 毫秒
181.
182.
Mawson AR Lapsley PM Hoffman AM Guignard JC 《Journal of health politics, policy and law》2002,27(2):243-260
Violence-related behavior in schools has declined in recent years, but the perception of risk remains high. Disturbingly high percentages of students and teachers report staying home out of fear, and many students bring weapons to school for protection. Current proposals for preventing school violence include punishing the violence-prone, expulsion for weapon carriers, and creating a culture of nonviolence through various behavioral methods like conflict resolution. None of these proposals address the issue of lethal violence and hence personal safety. The risk of lethal violence in schools (related mainly to firearms) could be substantially reduced by creating an effective barrier between firearms and people. This could be achieved by using entry-based weapons detection systems similar to those now used in airports and courts. Decreasing the risk and fear of violence by converting schools into weapons-free zones would also be expected to increase attendance and improve scholastic performance. Randomized, controlled studies should be undertaken to evaluate the efficacy and cost-effectiveness of entry-based weapons detection systems for achieving these outcomes. 相似文献
183.
Michael Hoffman 《发展研究杂志》2013,49(2):166-181
The introduction of the new Green Revolution wheat varieties to Israel is reviewed and analysed. It was found that the first stage varieties (developed from local Mexican wheats) did not have a significant impact on yields in Israel. Dwarf varieties and new crosses bred in Israel from Mexican genetic material contributed significantly to yield increases. Returns to local research are estimated. Conclusions about the role of the International Research System are drawn. 相似文献
184.
Bruce Hoffman 《冲突和恐怖主义研究》2013,36(1):93-95
If studies of conflict and terror involve understanding their causes and if the notion of “causes” is ultimately a philosophical concept (from Aristotle to Kant), then philosophy can make a unique contribution to studies of global ethnic conflict. Without delving deeply into philosophical ideas underlying the conflict, this article nevertheless examines how it largely stems from a cold war ideology of the Left. Moreover, a New Left is not only distinguished from politics and political philosophy but, dismayingly, traced to cold war western democracies, in which it continues, paradoxically, to flourish and be used to extinguish what it inflames. 相似文献
185.
Bruce Hoffman 《冲突和恐怖主义研究》2013,36(3):301-305
Terrorism: Threat, Reality, Response. By Robert Kupperman and Darrell Trent. (Stanford, CA: Hoover Institution Press), 1979, 450 pgs., $14.95. 相似文献
186.