电子杂志在书刊导读与推介中的应用研究

在分析图书馆书刊导读与推介服务现状的基础上,提出了利用电子杂志实现个性化书刊导读与推介推送服务的思路,设计了电子杂志实现服务的应用模型,并简要介绍了电子杂志的制作和使用.初步的实践表明:此种服务方式是可行的.     

借阅场景下图书专业性质量测度方法和图书个性化推荐服务方法

[目的/意义]以现有图书馆借阅记录为基础,结合图书阅读相关性进行深入挖掘,探讨识别借阅场景下图书专业性质量和实现相应个性化图书推荐服务的有效方法。[方法/过程]利用图书的阅读相关性提出图书相关性链接关系,结合图书质量的迭代识别算法来识别专业图书资源。同时利用图书类别相关性链接关系,提出读者用户个性化模式的表达方法,并从长期兴趣推荐和短期兴趣的即时推荐两个方面给出个性化图书推荐策略设计原理和实现方法。[结果/结论]在图书质量识别方面,该方法更易于识别出专业性较强的优质图书资源,适用面比较灵活,也可以在限定图书范围内进行专业图书识别。在个性化图书推荐方面,发现不论长期兴趣推荐方法还是短期兴趣推荐方法,第二类用户的平均推荐命中度要高于第一类用户,在第一类用户中,最高相似度区间（75%以上）和较低相似度区间（15%-50%）的短期兴趣推荐方法的平均推荐命中度要高于长期兴趣推荐方法。本研究通过读者借阅序列分析方法识别专业图书并实现相应的个性化推荐图书方法,有利于改善现有图书馆借阅服务水平和提高读者的满意度。     

基于FRUTAI算法的布尔型移动在线学习资源协同推荐研究

[目的/意义]针对移动在线学习平台中用户评价具有布尔变量属性的学习资源,提出一种适用于该类资源的协同推荐方法。[方法/过程]首先采用基于用户自身属性和已有好友分布特征的FRUTAI算法,确定目标用户的最近邻集;然后在解决数据稀疏的基础上,提出适用于布尔型移动在线学习资源的协同推荐方法;最后选取实证对象,依据相关评估方法评估推荐结果。[结果/结论]在以豆瓣书评网数据作为数据集的实证中取得了较好的推荐效果。实证结果表明,本文提出的改进的协同推荐算法可以有效地应用于移动在线学习平台中的布尔型学习资源,具有较好的推荐效果。     

数字图书馆推荐系统协同过滤算法改进及实证分析

[目的/意义] 为了提高传统协同过滤算法的计算速度,解决目标用户随着时间推移发生兴趣偏移而导致推荐系统质量下降的问题,以期进一步提升推荐系统运行效率和推荐质量。[方法/过程] 提出预先计算用户相似度算法和引入时间评分权重计算相似度矩阵的两种算法的改进,并利用Hadoop平台实证分析改进后的算法。[结果/结论] 实验结果证明：预先计算用户相似度算法缩短了对读者推送相关信息的时间,从而有效地提升了计算速度;引入时间评分权重计算相似度矩阵大大降低了MAE值,从而提高了推荐质量,两种算法同时应用后推荐系统在计算速度、准确率和新颖性方面都有显著提升。     

Prediction of academic performance prior to intersections within a multi-tiered school system

Diagnostic information is a centrepiece of educational decision making. Far-reaching decisions like placements within multi-tiered school systems may have a huge long-term impact on the achieved level of education. Therefore, such decisions should be substantiated or complemented by objective and prognostically valid information. To this end, we assessed academic self-concept, reading comprehension, orthographic abilities, and geometric and problem-solving skills prior to the selection of subsequent school forms in Grade 4 in order to model the pedagogical decisions of the teachers (Lenhard, Hasselhorn, & Schneider, 2011 Lenhard, W., Hasselhorn, M., & Schneider, W. (2011). Kombiniertes Leistungsinventar zur allgemeinen Schulleistung und für Schullaufbahnempfehlungen in der vierten Klassen (KLASSE 4) [Combined performance inventory for the determination of school performancy and schooling recommendations in Grade 4]. Göttingen, Germany: Hogrefe. [Google Scholar]). The article describes the longitudinal results of an independent sample of 76 students and how well their academic performance was predicted 18?months later by the psychometric approach compared to teacher recommendations. Standardized tests had a high prognostic validity and predicted the choice of higher educational levels in subsequent school years. Teachers were more successful in determining grouping decisions for students with lower educational attainments.     

论多元阅读时代高校图书馆新书推荐工作

针对出版业的快速发展和多元阅读呈现的浅阅读、快餐阅读、视觉阅读等现象,作为知识集散地的图书馆尤其是高校图书馆应肩负起自己的责任和使命,对读者阅读进行引导.新书推荐正是图书馆这一读者服务功能的充分体现.文章阐述了新书推荐的必要性,提出推荐工作应遵循的原则,分析了新书推荐工作存在的问题,并结合读者阅读需求与部分读书网站的做法,提出相应的改进措施.     

就业推荐与高职人才培养研究

就业推荐研究的重要意义在于 :推动人才培养更加靠近社会需求 ,推动人才培养更加靠近培养目标的实现 ,推动教学内容和课程设置改革 ,推动人才培养模式和途径转变 ,推动专业整合 ,还可功能拓展 ,架起与用人单位联系的桥梁。针对目前工作中存在的问题 ,建议关注研究成果转化和规范转化的渠道和机制     

我国古代的保举连坐制度初探

我国古代历代统治为维护自己的封建统治，十分重视对作为统治机器的官吏的铨选和控制、管理，并创立了一套完整、规范的官吏管理制度。保举连坐即是其中之一。保举连坐制度是我国古代保举人才与连坐思想的合璧之作。从秦朝开始，直至清朝，这一制度都有立法规定，但具体的连坐方法有所不同。历代统治都较重视对这一制度的贯彻实施。保举连坐制度在中国古代职官管理制度史上具有重要的意义，对我国正在进行的机构改革以及干部铨选也有可鉴之处。     

Implicit bias in letters of recommendation for an undergraduate research internship

Letters of recommendation are commonly used to assess the potential of undergraduate students to be successful undergraduate research assistants/interns or their potential as graduate students. However, there is evidence to suggest that reference letters can include unconscious (or implicit) bias that can affect decisions and limit opportunities for under-represented minorities and students from non-research institutions. This study uses a text analysis software program to examine 457 letters of recommendation for undergraduate students applying to undertake international research experience to determine whether there is a statistically significant difference in the language used to describe the students accepted into the programme (n = 36 letters) compared to those who were not accepted (n = 421 letters). Results suggest that letters of recommendation for the accepted students describe the productivity of the students with greater certainty and include a greater number of quotes from student work. In comparison, the letters for those students who were not accepted into the programme include more positive emotion and describe the insight of the student, but include more words associated with discrepancy and tentative statements. Despite no statistically significant differences in grade point averages, a similar pattern was observed between male and female applicants, white and non-white applicants, and applicants from research and non-research institutions. Results suggest a need to standardise letters of recommendation to ensure that the biases are minimised and do not present a barrier to increasing diversity in undergraduate research.     

面向智慧课堂的视频服务系统设计与实现

随着智慧课堂的日益普及,急需构建安全、稳定、高效的视频服务系统,提供丰富海量的视频信息资源、个性化的视频服务、教与学数据分析与决策支持等。通过实践调查和文献分析,基于智慧课堂教学设计与实施对视频服务的需求,设计实现了面向智慧课堂教与学服务的视频服务系统。该系统采用MVC模式,基于ThinkPHP高性能框架开发,基于角色实现了海量视频信息资源的智能检索,用户个性化视频推荐和图形化数据统计分析等功能,为智慧课堂提供全方位、个性化、智能化的教与学环境和信息资源服务,解决了传统课堂教学平台缺失和信息资源受限问题。实践应用与课堂调查表明,教师更关注视频信息资源的便捷获取与灵活发布、学情智能分析,学生更偏爱视频学习与立体化交互,基于平台的分组讨论与汇报,汇聚了师生智慧,实现了学生知识、技能、情感等多维学习目标的达成。