Allelic frequency distributions of 21 non-combined DNA index system STR loci in a Russian ethnic minority group from Inner Mongolia, China

We studied the allelic frequency distributions and statistical forensic parameters of 21 new short tandem repeat (STR) loci and the amelogenin locus, which are not included in the combined DNA index system (CODIS), in a Russian ethnic minority group from the Inner Mongolia Autonomous Region, China. A total of 114 bloodstain samples from unrelated individuals were extracted and co-amplified with four fluorescence-labeled primers in a multiplex polymerase chain reaction (PCR) system. Using capillary electrophoresis, the PCR products of the 21 STR loci were separated and genotyped. A total of 161 alleles were observed in the Russian ethnic minority group, and corresponding allelic frequencies ranged from 0.0044 to 0.5965. The 21 non-CODIS STR loci of the Russian ethnic minority group were characterized by high genetic diversity and therefore may be useful for elucidating the population’s genetic background, for individual identification, and for paternity testing in forensic practice.     

微博环境下图书馆危机信息传播及应对策略探析

微博作为一种新兴传播手段,在提高图书馆与读者双方交流便利性的同时,其碎片化传播、情绪主导表达、围观性及管理缺失的特点,也容易催化不良信息的产生和传播,图书馆可以在危机信息传播的潜在期进行安全预警,规避防范危机信息的产生;发生期认真对待,及时有效化解危机;解决恢复期加强舆论引导,分散危机信息.参考文献10.     

高校图书馆联盟建设策略研究

文章分析了高校图书馆联盟建设中存在的一系列问题,针对这些存在的问题提出了高校图书馆联盟建设的策略。     

Effects of Negative Political Advertising on Individuals' Cynicism and Self-Efficacy: The Impact of Ad Type and Message Exposures

Prior research has indicated that exposure to negative political advertising can foster among individuals feelings of alienation, distrust, and apathy toward government or the political process. However, investigation regarding the amount of exposure to such advertising and the form in which it is presented remains scant. This experimental study examined the impact of ad type (character based vs. issue based) and amount of advertising exposures on individuals' cynicism and perceived self-efficacy in relation to the government. Results indicated that issue-based attack ads aired during the 2004 presidential election led to greater cynicism and lower self-efficacy than did character-based attack ads. A significant interaction revealed that the difference on the self-efficacy measure was greatest at the highest exposure level, indicating that continual exposure to ads dealing with governmental policies may nurture the perception that the political process is overly complex, which subsequently can decrease individuals' beliefs that they can make a difference.     

The Impact of News Use and News Content Characteristics on Political Knowledge and Participation

Research has examined the relationship between traditional news media use and normatively important political outcomes such as knowledge and participation. However, most research fails to account for variations in the nature of news over time and across communities that could alter the fundamental relationship between exposure and these outcomes. Here two studies are presented—one with variation in news characteristics over time based on the American National Election Studies time series data and another with variation across local communities and newspapers within a single state during a single election year—to assess the hypothesis that the relationship between news use and political outcomes are moderated by natural variations in the nature of the news content and news outlets.     

信息检索过程中用户主观因素作用研究

指出在网络受控环境下,用户主观因素是影响信息检索绩效的重要变量,在信息检索过程中发挥着至关重要的作用。利用CCA典型相关分析方法,分析主观因素与检索行为等因素之间的关系。结果表明:①容易度与任务总时间显著相关,当用户在检索后判断任务难度大时将会付出更多的时间和努力;②标记文献数、重复浏览率、浏览网页数与感觉、丢失度相关;③高兴度与相关度、完成度负相关表明用户在检索前愉悦程度低的用户可能获得更好的检索结果。     

面向LOD的关联发现过程的定位、目标与复杂性分析

本文以关联数据应用过程中的关联发现过程为研究对象,分析了面向关联开放数据(LOD)的关联发现过程的定位、目标与复杂性。本文认为,关联发现过程处于关联数据应用过程三阶段(数据发布、数据互联与数据消费)中的第二阶段。关联发现过程的整体目标是构建多类资源之间的关联数据网络,该过程的本质就是关联数据网络不断演变的过程。关联发现的过程具有多任务、多路径、多步骤等复杂性特征。目前流行的关联发现框架还存在缺乏对整个网络演变过程的支持、任务类型单一、缺乏流水线机制等不足。因此,关联发现技术的研究急需新的面向整个关联数据网络的、支持完整演变过程的、支持多任务集成的理论、方法与框架。图5。表1。参考文献17。     

网络数据库课程中关于触发器的实现的教学研究

针对四川民族学院计算机专业网络数据库课程中关于触发器的实现教学模式存在的不足,提出了改进措施,通过教学实践表明这些措施能够有效的提高教学效果和学习效率。     

谈义务教育阶段有效的数学情境及其对学生数学学习的作用

情境学习是一种新型的学习范式。在义务教育阶段的数学课堂教学中,创设有效的数学情境对学生的数学学习至关重要,不仅有利于激发学生的数学学习兴趣、提高学生的数学课堂参与度,而且有利于增强学生的"四能"。     

主位推进模式下的语篇分析

本文阐述了主位、述位的概念,介绍了四种主要的主位推进模式。将主位推进模式运用于语篇分析,可以揭示语篇的结构、揭示中心内容和信息在语篇中的分布情况,并了解语篇内各个句子之间的内在联系。