圆形滴状血迹形态与血滴体积、撞击速度的相关性

目的观察不同体积的血滴以3种撞击速度垂直撞击3种不同介质形成的滴状血迹形态及大小,并探讨其相关性。方法将8种不同体积（14～115IxL）的抗凝猪m形成血滴,以3种不同的撞击速度（3．1～5．4m／s）分别垂直滴落于白纸、玻璃及釉面地砖上,观察形成血迹的形态特征,测量其直径,并采用SPSS13．0统计软件进行分析。结果在3种撞击速度条件下,在3种介质上形成的滴状血迹直径均随血滴体积的增加而增大,血迹直径与血滴体积存在较好的线性关系,可得出回归方程（回归模型R2〉0．85,P〈0．01）;介质表面越粗糙,血迹直径越小;仅在自纸上发现血迹边缘有突起形成,且其数目随血滴体积的增加而增多。撞击速度及血滴体积存在较好的多重线性关系,可得出多重回归方程（回归模型R2〉0．90,P〈0．01）。结论垂直撞击形成的血迹形态及大小与血滴体积、撞击速度具有显著的相关性,可望用于推测出血源位置、受伤体位及出血部位载体。     

The Fair Housing Act Today: Current Context and Challenges at 50

ABSTRACT

As is true for most legislation, the Fair Housing Act (FHA) was a product of its time; the legislation’s content, and even passage, was formed by dominant issues in housing markets and the country at that time. The context shaped the goals of the FHA and the strategies and tools employed under its auspices. Fifty years after the passage of the FHA, much of that context has changed. This commentary argues that changes in the context not only raise new fair housing challenges and create new gaps in our knowledge, but also may necessitate a fresh look at fair housing strategies and tools if they are to be effective at achieving the goals of the act. This commentary begins with a brief background on the FHA itself, the social context at the time of its writing, and its main goals. Next it lays out a few key changes in housing markets relevant for fair housing, highlighting challenges they may create and where research could be of greatest value. It then considers challenges arising from threats to two specific U.S. Department of Housing and Urban Development (HUD) fair housing rules seen by many as critical fair housing tools. The commentary ends with two examples of a “refresh,” where current context has shaped, or reshaped, a strategy to address today’s fair housing challenges.     

The electoral effectiveness of constituency campaigning in the 2010 British general election: The ‘triumph’ of Labour?

This article establishes a model of likely campaign effectiveness, before examining the intensity of constituency campaigning at the 2010 general election in Britain and its subsequent impact on electoral outcomes, using both aggregate and individual level data. It shows that constituency campaigning yielded benefits in varying degrees for all three main parties and that Labour’s constituency campaign efforts were effective despite the electoral context, and ultimately affected the overall outcome of the election. These findings have significant implications for our understanding of the circumstances under which campaigns are likely to be more or less effective, and provide further evidence that a carefully managed campaign stands the most chance of delivering tangible electoral payoffs.     

The many uses of regulatory impact assessment: A meta‐analysis of EU and UK cases

Research on regulation has crossed paths with the literature on policy instruments, showing that regulatory policy instruments contain cognitive and normative beliefs about policy. Thus, their usage stacks the deck in favor of one type of actor or one type of regulatory solution. In this article, we challenge the assumption that there is a predetermined relationship between ideas, regulatory policy instruments, and outcomes. We argue that different combinations of conditions lead to different outcomes, depending on how actors use the instrument. Empirically, we analyze 31 EU and UK case studies of regulatory impact assessment (RIA) – a regulatory policy instrument that has been pivotal in the so‐called better regulation movement. We distinguish four main usages of RIA, that is, political, instrumental, communicative, and perfunctory. We find that in our sample instrumental usage is not so rare and that the contrast between communicative and political usages is less stark than is commonly thought. In terms of policy recommendations, our analysis suggests that there may be different paths to desirable outcomes. Policymakers should therefore explore different combinations of conditions leading to the usages they deem desirable rather than arguing for a fixed menu of variables.     

论科举制的发展演变对经学的影响

汉代开启了以经术作为主要取士标准的选官制度,奠定了以儒家经义为主要考试内容的科举传统. 唐代科举重视明经、进士两科,突显了经学的重要地位.宋代范仲淹、王安石的科举改革,对于经世致用学风的形成起到了巨大的推动作用.明清科举考试的八股化,不利于士子从经学原典中汲取思想精华,因而对经学的发展有明显的阻滞作用.     

车外人员撞击伤特点分析

目的以真实案例为基础,研究汽车碰撞事故中,不同机动车车型、不同交通方式等因素造成车外人员撞击伤的特征。方法选取上海地区发生的汽车与车外人员碰撞事故案例200例,通过对事故中的人、车等检验对比,分析车外人员撞击伤的特点。结果车外人员撞击伤主要出现在下肢,其次为胸部和头部;行人（含推车人）撞击伤出现频次与骑车人（含自行车或摩托车后座乘员）无明显差异;小轿车和小客车事故中撞击伤多见于下肢,大客车多见于胸部;车外人员被撞击后发生抛甩频率随车速的加大而增高,且通过车体痕迹检验,人体与车辆挡风玻璃发生（二次）撞击伤匹配程度最高。结论分析汽车与车外人员碰撞事故人体撞击伤特点,对于交通伤法医学鉴定及深化交通伤机制研究具有参考价值。     

新媒体技术与环境对高校共青团工作的影响与对策

新媒体技术的迅猛发展及应用,对青年学生获取信息、交往、学习、个性展现等产生了深远的影响,也给高校共青团工作带来了机遇与挑战。面对新形势,应充分发挥新旧媒体的综合效能,运用新媒体技术创新高校共青团工作手段,加强校园网络文化建设和信息素养教育,从而主动占领高校思想政治教育阵地。     

青年时尚文化的发展及其对青年价值观的影响

改革开放30年来,以大众传媒为载体的青年时尚文化经历了从萌芽、形成、成熟到多元发展的过程,深刻影响着青年价值观的发展变化。为了提升青年时尚文化,我们必须以社会主义核心价值体系引领青年时尚文化潮流,不断加强青年价值观教育,发挥共青团创造和发展青年时尚文化的优势,强化管理,以营造良好的社会环境。     

贸易保护主义对我国对外贸易的影响及对策研究

随着金融危机的深化与扩展,一些国家迫于形势的压力纷纷出台贸易保护措施,但同时也引来了贸易保护主义的喧嚣和泛滥。从奥巴马"新政"中的"购买美国货"条款,到欧盟对奶酪、黄油和奶粉的出口补贴,无不带有明显的贸易保护主义色彩。由此,危机的国际传导效应增大了全球经济的风险,国际经济形势更趋复杂化。分析金融危机对我国出口贸易的影响,提出相应对策,是我们积极应对国际国内形势发展变化的前提。     

日本强震及核危机对全球经济的影响

地震、海啸、核安全问题接连发生,日本正在经历史上罕见的“大创伤”。强震、海啸、核危机对日本经济的负面冲击明显大于阪神地震。日本地震后的灾后重建与阪神地震时的财政环境明显不同,地震提高了日本政府的违约风险和隐含的主权债务风险。但对世界经济整体而言,日本大地震不会影响全球经济复苏的步伐。虽然全球股市企稳回升,但“核阴云”笼罩亚太、大宗商品呈现先抑后扬的态势,加之受利比亚战争及发达国家的量化宽松货币政策等外围因素影响,日本大地震使全球金融市场未来面临诸多不确定性。日本地震对中国经济影响有限,灾后重建对中国出口及产业发展带来有利契机。