基于数据库联邦方式的多数据源集成检索系统   总被引：1，自引：0，他引：1  

黄永文 《现代图书情报技术》2005,21(11):57-60

介绍了多数据源集成检索系统的产生背景和实现方式，分析了基于数据库联邦方式的多数据源集成检索系统的体系框架和异构问题，对国外的基于数据库联邦方式的多数据源集成检索系统进行了介绍和比较分析。  相似文献   

ISI Web of Knowledge跨库检索功能与操作技巧   总被引：3，自引：0，他引：3  

袁希蓓 《新世纪图书馆》2005,(2):50-52

ISI web of Knowledge是新一代的学术信息资源整合体系，是Web of science的最新升级平台。本文主要介绍了这一体系的跨库检索功能及其操作技巧。  相似文献   

基于词向量扩展的学术资源语义检索技术   总被引：1，自引：0，他引：1  

王仁武  陈川宝  孟现茹 《图书情报工作》2018,62(19):111-119

[目的/意义] 尝试以统计的方法为指导思想,探究基于词向量扩展的语义检索技术来提升学术资源的语义检索能力。[方法/过程] 利用自然语言处理、文本挖掘技术,对采集来的学术资源（主要是学术论文）元数据进行预处理,结合word2vec词向量生成工具和elasticsearch全文检索引擎搭建语义检索系统,对学术资源进行语义检索的探索研究。[结果/结论] 本文提出的方法能够有效提升学术信息的检索效果,一定程度上实现学术资源的语义检索,并为后续语义检索的进一步研究提供借鉴。  相似文献   

Virtual Serendipity: Preserving Embodied Browsing Activity in the 21st Century Research Library     

Matt Cook 《The Journal of Academic Librarianship》2018,44(1):145-149

As academic library collections are moved off site to make room for learning commons-type collaboration spaces, exploratory research processes (e.g. stacks browsing activities) are threatened. Given the range of benefits associated with chance information encounters in the physical book stacks, the disappearance of accessible collections is problematic. Fortunately, by focusing on embodied aspects of the physical browsing experience we can leverage emerging technologies to preserve instances of serendipitous information retrieval. Virtual reality, in this case, provides a browsing platform that allows for the type of search activity typically associated with research in the physical books stacks and preserves the benefits thereof.  相似文献   

Creating Better Learners Through Learning Science: A Sample of Methods     

Chris Brown 《图书馆管理杂志》2018,58(4):375-381

This article proposes the incorporation of learning science into the programming and operation of public libraries. Learning science, a multidisciplinary field spanning cognitive science, psychology, neuroscience, economics, anthropology, and linguistics, has identified proven methods for enhancing learning at any age. The article highlights some of the tools and insights that are most relevant to libraries in their role as centers for informal learning.  相似文献   

Handwriting isolated cursive letters in young children: Effect of the visual trace deletion     

《Learning and Instruction》2021

This study assesses the handwriting of isolated cursive letters in five-year-old children and the effect of a modification in visual feedback. Sixty-four children copied twelve cursive letters with an inking pen and a non-inking pen. Reducing visual feedback decreased the mean number of penlifts, and increased mean velocity and fluency. However, it increased the size of the letters (trajectory length) and reduced their quality. We suggest that processing visual feedback of the emerging visual trace may interrupt the fluency of the movement, while writing without seeing the trace may place greater emphasis on motor control and the use of somatosensory feedback. This study supplies reflection about sensory feedback and the moment when it should be provided in handwriting instruction. Practitioners should be aware that variation in the writing environment (surface, tools …) modifies sensory feedback and affects handwriting learning (gesture and outcome) in different manner.  相似文献   

对足球移动能力训练的思考          下载免费PDF全文

毛燕平 《河北体育学院学报》2017,31(3):76-79

运用文献资料法、逻辑分析法和经验总结法,对足球运动员移动能力训练进行研究.指出,移动能力是足球技能的重要组成部分,与球员的比赛表现密切相关.在对移动方式特征和分类进行分析梳理的基础上,针对长期被忽视的发展感知能力和移动效果反馈两方面,提出足球移动能力训练的内容和重点,以及不同训练阶段的训练要点.认为,发展移动能力要符合力学原理、结合专项技术训练,最终实现训练能力向比赛能力的转化.  相似文献   

数字化条件下查新工作集中管理模式研究     

秦勇 《数字图书馆论坛》2014,(9):62-65

当前分散式查新管理模式在实际运行中存在着诸多弊端，如申报人与查新人存在利益交换、查新规范执行不严谨、项目申报流程对查新尊重不够等。鉴于此，文章提出查新工作的集中管理模式，简述其构成模块和基本运行流程，探讨集中式管理系统相较分散模式所带来的新挑战及解决方法，为查新工作的规范管理提供了一种选择。  相似文献   

The effect of anticipated achievement feedback on students' semantic processing as indicated by the N400 cloze effect     

《Learning and Instruction》2017

The present study examined the effects of anticipated achievement feedback on students' semantic processing on the neural level, using event-related brain potentials (ERPs). Participants (N = 79) anticipated either self-referential or normative achievement feedback regarding an announced upcoming test. Additionally, their performance expectations (low vs. no expectations) were orthogonally manipulated. Subsequently, students' on-line semantic processing was assessed by measuring the N400 cloze effect, a component in the EEG signal of which the amplitude is associated with semantic processing. Within the low performance-expectation condition, no effect of anticipated feedback on semantic processing was found. Within the no-performance-expectation condition, participants anticipating self-referential feedback showed a more widely distributed N400 cloze effect than participants anticipating normative feedback. The results confirmed the hypothesis that the mere expectation of a particular type of feedback can affect students' semantic processes.  相似文献   

Implementing Conferences in College English Writing Class:The Effects of the Negotiated Input     

GONG Li 《海外英语》2015,(3)

The current study is to examine the interactional effects of writing conferences focusing on negotiated patterns of revi?sion in a college English writing class. Fifteen participants were required to w...  相似文献