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BACKGROUND: Because of the expense of updating practice guidelines, recent attention has focused on approaches that can reliably assess any updating required. Shekelle et al. (Journal of the American Medical Association 2001, 286, 1461-7) proposed using limited literature searches with expert involvement to reduce resources used in assessing whether a guideline needs updating. OBJECTIVES: This study compared Shekelle's method and the traditional systematic review method regarding comprehensiveness and effort. METHODS: Two research teams translated critical key questions on screening test treatments and outcomes to Medical Subjects Headings (MeSH) and search strategies. They refined Shekelle's method over three iterations, seeking greater efficiency. Using both methods independently, teams assessed the need to update six topics from the 1996 Guide to Clinical Preventive Services (US Preventive Services Task Force). Outcomes included completeness of study identification, importance of missed studies and effort involved. RESULTS: The revised review approach produced fewer citations than the traditional approach and saved time, identifying fewer eligible studies than the traditional approach. None of the studies missed was rated important by the experts consulted. CONCLUSIONS: The revised review approach provides an acceptable method for judging whether a guideline requires updating. Librarians were an integral part of the research process that streamlined the searches.  相似文献   
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A growing body of research documents that various forms of violence exposures are interrelated. This paper presents a conceptual model, which accounts for the relationship between youth witnessing intimate partner violence (IPV) at home and their subsequent engagement in bullying behaviors and victimization by peers. A comprehensive search of major databases was conducted within a 12-year period (1999–2011). Based on this review, we provide empirical evidence, which documents that youth who witness IPV are at increased risk for bullying behaviors and peer victimization. Next, we posit a mediational model, which suggests that the relationship between witnessing IPV and bullying behavior and peer victimization is mediated by psychological problem behaviors, lower school success, and problematic peer interactions. We also explore potential moderating factors that may exacerbate or buffer the effects of witnessing IPV, such as age, gender, race/ethnicity, parenting practices, and peer relationships. This overall conceptual model should be empirically tested and has important implications for guiding future research on the relationship between IPV and bullying behaviors and victimization among youth.  相似文献   
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结合我国<民法通则>和有关司法解释,就法人合伙的民事责任做了进一步探讨.  相似文献   
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运用分光光度法测定了来自浙江台州境内天台山不同生境的甜槠黄酮类化合物的含量并对其成分进行了聚酰胺薄层层析分析。结果表明,甜槠不同生境的叶片黄酮类化合物以冠层生境含量最高,灌丛生境次之,林下生境含量最低;林下生境的黄酮类化合物成分最少,而冠层生境的成分最多。  相似文献   
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在大规模定制生产的基础上,对大规模定制供应链柔性的进行研究.在提出和界定柔性系数这一概念和影响它的六个主要因子的基础上,利用灰关联方法科学的计算出影响大规模供应链柔性关键因子,并以某家电企业实际数据为例进行实证分析.  相似文献   
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WTO环境下中国高校图书馆事业发展述略   总被引:6,自引:2,他引:4  
夏旭  李健康  葛驰 《图书馆论坛》2002,22(4):3-6,128
概述国内就WTO环境对图书馆情报事业的冲击和影响等进行探讨取得的成绩,分析中国加入WTO后对我国文教、高校图书馆事业的影响,从多个方面总结高校图书馆工作取得的成绩和应对WTO准备的不足,提出WTO环境下高校图书馆事业发展的建议。  相似文献   
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高校是我国IC产业链中不可缺少的一部分,针对当前集成电路领域企业缺少原始技术积累、高校成果转化困难的问题,提出一种以IP核合作方式促进高校集成电路设计加快发展、实现高校与企业双赢的创新机制.以西安交通大学SoC设计中心近十年来的发展历程为案例进行分析,提出基于IP核开发的高校集成电路设计发展的具体策略.  相似文献   
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