Comparison of three web-scale discovery services for health sciences research     

Rosie Hanneke  Kelly K. O'Brien 《Journal of the Medical Library Association》2016,104(2):109-117

Objective

The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries.

Methods

Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris''s Primo, and ProQuest''s Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content.

Results

All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE.

Conclusions

None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools'' value as a supplement to traditional resources for health sciences researchers.  相似文献   

衔接理论与大学英语阅读教学     

徐艳云 《毕节学院学报》2007,25(1):103-105

在英语听说读写四大技能中,阅读占有极其重要的地位。提高学生的阅读理解能力,在很大程度上是提高了他们运用所学外语的全部技能。将衔接理论运用于大学英语教学具体实践,可知阅读教学中有意识地运用衔接理论对学生进行阅读策略训练,能够有效地提高阅读理解水平。  相似文献   

朱熹《观书有感》诗究竟作于何时     

李士金 《河北师范大学学报(哲学社会科学版)》2007,30(4):70-73

朱熹《观书有感》诗的写作时间究竟是哪一年,直接关系到对诗歌深刻意蕴的理解.有人认为这首诗写于 1176年,其实是虚构事实、误读历史材料的结果.因为这首诗在现代社会广泛流传,各种选本和教科书往往也予以收录,所以有必要对此进行辨证分析.  相似文献   

Observations on the temporal correlates of reading failure     

Raymond M. Klein 《Reading and writing》2002,15(1-2):207-231

The definitions of developmental dyslexia andtemporal processing are discussed and severalconstruals of what a temporal processingdeficit might entail are illustrated. Then,using a framework developed by Farmer & Klein(1995), the proposal that a temporal processingdeficit (in vision, audition, or both) might bethe root cause of some proportion of cases ofdevelopmental dyslexia is introduced andvarious research strategies for testing thisproposal are identified. The symposium paperswhich address this general question using arange of these strategies are then criticallyreviewed. It is noted that whereas reading isa recent artifact not yet subject to any directselection pressure, its normal performancerequires the use of, and connections between,the highly evolved modules for visual patternrecognition and language. Within vision andlanguage redundant coding, which permitsperformance in the face of injuries anddegraded input, also makes it difficult todetect subtle deficits (whether temporal, ornot) unless precise tests are used. Yet suchdeficits may degrade performance on tasks (suchas reading) which require the non-copiousconnections between vision and language. Theefficacy of this pathway, I suggest, ismeasured by performance on the rapidautomatized naming (RAN) test.  相似文献   

阅读能力的内涵与测试     

施安全  金春伟 《齐齐哈尔师范高等专科学校学报》2002,21(1):86-89

阅读是获取语言知识直接，最有效的方法，阅读能力则是衡量掌握语言综合能力的一项重要标志，对于英语教师和测试工作来说，理解阅读能力的内涵及其与测试之间的关系，科学地，有效地测试学习的英语阅读能力，对于提高课堂教学的效率和学习的兴趣，公平，客观地衡量，检测教学效果是非常重要的。  相似文献   

如何解决英语泛读中的词汇问题     

王盛梅 《绥化学院学报》2004,24(3):106-107

英语泛读教学往往强调训练学生的阅读速度和理解能力，而不注重词汇教学。但词汇问题势必妨碍速度和理解能力的提高。本文就如何扩大学生的阅读词汇略抒管见。  相似文献   

中学英语朗读教学点滴体会   总被引：3，自引：0，他引：3  

张华 《贵州教育学院学报》2005,21(6):82-84

英语朗读对中学英语教学具有促进作用，忽视朗读将产生反作用，应采取有效的措施和方法。  相似文献   

语文拓展阅读刍议     

任世辉 《宁波教育学院学报》2007,9(3):73-74

拓展阅读是文章阅读的延伸和补充,因而拓展阅读要围绕语文课的特点来展开。语文教学中,教师可以纵向拓深,挖掘文本的内涵,提高学生感悟生活的能力;也可以横向拓宽,扩大学生视野,切忌把语文课上成政治课、科学课。  相似文献   

Orthographic analogies and early reading: Explorations of performance and variation in two transfer tasks     

Savage  Robert  Stuart  Morag 《Reading and writing》2001,14(7-8):571-598

Two experiments investigated the use of orthographic analogies in 6 year olds. In Experiment 1, 26 children were shown CVC clue and target word pairs sharing either rimes (`fork' – `pork'), heads (`fork' – `ford') or were controls (`fork' – `hurl'). A modest advantage for rime-clued over head-cluedtargets was unreliable over by-subject and by-item analyses. Improvements in target word reading were correlated with pretest scaffolding errors (e.g. `pork' misread as `park'). In Experiment 2, 50 children were pretaught three clue words for each target word before being shown words that shared either rimes (`leak' – `peak'), or medial vowel digraphs (`leak') – `bean'), or were controls (`leak' – `herd'). A modest advantage for rime-clued over vowel digraph-clued targets was again unreliable over by-subject and by-item analyses. Neither rime nor phoneme awareness measures were correlated with rime inference use. Vowel, but not rime inference, was correlated with scaffolding errors. Rime detection was the strongest predictor of reading ability, whereas phoneme segmentation was the strongest predictor of the use of scaffolding errors.  相似文献   

完形默读法：汉语第二语阅读理解监控试验教学研究     

胡月宝  林季华 《云南师范大学学报(教育科学版)》2011,(2):35-40

文章以＂为意义而阅读＂为基本的阅读理念,把测量阅读理解和教材难易度的阅读填空（Cloze）测量法应用在第二语课堂阅读教学中,设计成＂完形默读法＂（Cloze Silent Reading Method）,作为阅读过程中的自我监控工具,让学习者能集中注意、调动先备知识与经验,主动与语篇交际。研究结果初步发现,初中二年级的受试在经过第一阶段完形默读历程后,其字面性理解力提升,推论理解力也有所提升;从教学意义来看,完形默读法能发挥理解监控的正面作用,促进学习者的阅读力,意味着第二语阅读过程之教学的一种突破。  相似文献