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从馆藏数字资源的在线使用情况、用户使用比例及高层次用户群获取数字信息的渠道3个层面,对高校不同层次用户群数字信息获取行为及其与二八法则、长尾法则的契合点进行分析的结果表明:图书馆在引导用户优化数字信息获取行为时应重视20%学科专家的信息影响力,以此带动80%用户信息素养的整体提高;应引导用户有效利用长尾尾部的数字信息获取渠道;应组织、揭示数字信息,引导用户需求向长尾尾部移动。 相似文献
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Although age is not supposed to be a criterion for the award of the Nobel Prize, it is commonly believed that it does play a role. Indeed, econometric evidence in this paper also suggests such a role. However, the paper finds that, if there is a preference for older Nobel candidates, this is introduced during the nomination process. The paper actually finds that the Nobel Committee does not favor older nominees and that, if anything, it seems to partially offset the age premium introduced by the nominators. 相似文献
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This paper addresses the role that scientific status plays in initial public offerings of technology focused firms. The paper builds on the literature of the sociology of science as well as the work of Spence (1974) and Podolny (1993) and argues that the presence of a Nobel laureate affiliated with a firm making an IPO provides a signal of firm quality to potential investors. Moreover, and building on the work of Podolny and Scott Morton (1999) and Stuart et al. (1999) we hypothesize that the importance of status diminishes as other measures of firm quality become available. We test our hypothesis for two periods of initial public offerings in biotechnology. We document that there is a clear difference in “maturity” of the firms across the two windows on a number of metrics. Consistent with our hypothesis that Nobel laureates play an important role as a non-financial signal of firm quality, we find that first-window firms with a Nobel laureate affiliate realize greater IPO proceeds in the amount of $24 million. In the second window the amount of money raised is not significantly different between Nobel and non-Nobel firms. This finding is consistent with the signaling literature that argues that the importance of a signal is inversely related to the availability of cogent information on firm quality. Consistent with this view, we also find a change between the two windows in the importance of other non-financial metrics used to convey value. Our research is one of the first to examine the dynamic nature of signals. Because we are unable to distinguish the extent to which the reduction in uncertainty at the firm level is correlated with the reduction of uncertainty at the industry level, the question remains as to the extent to which the diminished importance of signals in our second period is due to a change in market uncertainty versus a change in firm uncertainty. 相似文献
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以图情领域的四种优秀期刊为数据来源,借助散点图与曲线拟合的方法,在论文、作者、机构三个层面上归纳了引文网络中入度分布的三个特征。其一,三个层面的入度分布均呈现幂律分布,优先连接机制起明显作用;其二,在机构的入度分布出现了单峰,即均匀连接机制存在于引文网络中,且削弱了入度分布近似直线的程度;其三,二八律与幂律分布存在紧密联系。论文最后对这些特征的形成原因进行了分析。 相似文献
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目前,很多高校专职辅导员都是刚从高校毕业的"80后",他们能否胜任"90后"大学生辅导员的工作是值得关注的问题。本文将从"80后"辅导员本身需要注意的问题和班级建设层面提出几点思考和建议,希望能对"80后"高校辅导员有一定借鉴作用。 相似文献
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刘冰 《湖北第二师范学院学报》2014,(12):31-34
“80后”指中国1980-1989十年中出生的人,因其特殊的成长环境而备受公众和媒介的关注,是一个时代的文化潮流,具有鲜明的时代烙印.本文主要采用内容分析法,以“80后”网络话语文本为研究对象,从话语分析角度出发研究网络媒介构建的“80后”身份和形象特点及其构建方式,同时结合“80后”所处的时代背景和社会环境,分析“80后”网络媒介形象的成因. 相似文献
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龚学贤 《上海海事大学学报》1991,(1)
Z-80单板计算机在国内具有大量的用户,但怎样方便地开发Z-80单板计算机,使其强大的功能得以充分发挥是一个很重要的问题。本文叙述了利用微型计算机开发单板机的一般方法,并介绍了一个在CROMFMCO微机上开发TP801单板机的实例。 相似文献
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本文通过实证研究的方法,以"80后"基层员工为调查样本,运用探索性因子分析和验证性因子分析,提取并验证了组织激励具有领导特征、制度环境、职业发展、薪酬福利、同事关系等5个因子。在明确组织激励结构维度的基础上,对比样本对各测量指标及因子的重视程度,结果表明,"80后"对5个因子的重视程度依次是职业发展、薪酬福利、领导特征、同事关系和制度环境。文章以此为依据分析了在"80后"基层员工激励策略中应加以重视和强化的方面,以期对企业的人力资源管理工作提供参考和借鉴。 相似文献
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王姝绘 《绵阳师范学院学报》2008,27(10)
目前教师职业倦怠研究的对象还十分宽泛,并没有针对某一特定阶段或时代的教师。中国80后是在特定的时代背景下成长起来的富有现代性文化内涵的一代,他们已在抗震救灾和奥运中崭露头角,而英语学科教师本身又具有某些特殊的个性,因此对80后英语教师职业倦怠问题的研究具有现实意义。 相似文献