Identifying and removing duplicate records from systematic review searches     

Yoojin Kwon  Michelle Lemieux  Jill McTavish  Nadine Wathen 《Journal of the Medical Library Association》2015,103(4):184-188

Objective

The purpose of this study was to compare effectiveness of different options for de-duplicating records retrieved from systematic review searches.

Methods

Using the records from a published systematic review, five de-duplication options were compared. The time taken to de-duplicate in each option and the number of false positives (were deleted but should not have been) and false negatives (should have been deleted but were not) were recorded.

Results

The time for each option varied. The number of positive and false duplicates returned from each option also varied greatly.

Conclusion

The authors recommend different de-duplication options based on the skill level of the searcher and the purpose of de-duplication efforts.  相似文献   

贵州彝族文化研究20年     

郭宸利 《毕节学院学报》2011,29(10):26-34

彝学的研究范围非常广泛,它是一门研究彝族文化及其历史变迁等方面的综合性学科。纵观近20年来,贵州的彝学研究工作成绩斐然,其研究成果囊括了彝族文化的方方面面,在深度和广度方面得到提升,研究队伍不断扩大,实现了各学科领域的密切结合,不断将彝学研究引向深入。在新时期,贵州彝学研究也面临着时代转型,突出表现在迫切需要大力培养科研人才,实现研究理念的转变和理论构架的建立,加强本位视角和应用型的研究,积极打破学科界限和壁垒,不断开创新的研究方法,促进彝学研究不断向前发展。  相似文献   

我眼中的《比较教育研究》     

徐辉 《比较教育研究》2015,37(11):29-32

本文认为,作为中国比较教育研究分会会刊的《比较教育研究》在我国教育事业的改革与发展进程中发挥了不可替代的重要作用.它是青年学者学习的榜样,是我国教育界了解世界教育发展的窗口,是我国国际教育交流与合作的平台,是繁荣我国教育科学的园地,是服务我国教育决策的智库.  相似文献   

Building the expert teacher prototype: A metasummary of teacher expertise studies in primary and secondary education     

《Educational Research Review》2023

While expert teachers remain a frequent focus of research in education, to date there have been very few attempts to conduct systematic reviews of this literature. This paper presents the findings of the first systematic metasummary of research on teacher expertise in K12 education (primary/elementary and secondary levels), based on analysis of 106 empirical studies from 16 countries involving 1124 teachers identified as experts. The inductively-developed coding framework was applied independently by both authors to the dataset to generate agreement counts for specific coding themes, firstly for specific domains of teacher expertise, and then stratified to compare primary and secondary studies. We present 73 specific features organised into six domains in our expert teacher prototype. Salient findings indicate that, with regard to professional practice, expert teachers reflect extensively and often critically on their practice, help their colleagues frequently, and are continuous learners throughout their careers. Concerning knowledge, we find that expert teachers have well-developed pedagogical content knowledge and knowledge about their learners. In the domain of pedagogic practice, we observe that expert teachers display flexibility in the classroom, build strong interpersonal relationships with their learners, whom they engage through their choice of activities and content, and frequently make use of strategies typically emphasised in both constructivist and learner-centred education literatures. We offer our prototype as a useful initial sketch of family resemblance among expert teachers rather than a checklist of necessary or expected features of expertise, also cautioning that the prototype remains far from complete.  相似文献   

Automatic thematic classification of election manifestos     

Suzan Verberne  Eva D’hondt  Antal van den Bosch  Maarten Marx 《Information processing & management》2014

We digitized three years of Dutch election manifestos annotated by the Dutch political scientist Isaac Lipschits. We used these data to train a classifier that can automatically label new, unseen election manifestos with themes. Having the manifestos in a uniform XML format with all paragraphs annotated with their themes has advantages for both electronic publishing of the data and diachronic comparative data analysis. The data that we created will be disclosed to the public through a search interface. This means that it will be possible to query the data and filter them on themes and parties. We optimized the Lipschits classifier on the task of classifying election manifestos using models trained on earlier years. We built a classifier that is suited for classifying election manifestos from 2002 onwards using the data from the 1980s and 1990s. We evaluated the results by having a domain expert manually assess a sample of the classified data. We found that our automatic classifier obtains the same precision as a human classifier on unseen data. Its recall could be improved by extending the set of themes with newly emerged themes. Thus when using old political texts to classify new texts, work is needed to link and expand the set of themes to newer topics.  相似文献   

Expert group formation using facility location analysis     

Mahmood Neshati  Hamid Beigy  Djoerd Hiemstra 《Information processing & management》2014

In this paper, we propose an optimization framework to retrieve an optimal group of experts to perform a multi-aspect task. While a diverse set of skills are needed to perform a multi-aspect task, the group of assigned experts should be able to collectively cover all these required skills. We consider three types of multi-aspect expert group formation problems and propose a unified framework to solve these problems accurately and efficiently. The first problem is concerned with finding the top k experts for a given task, while the required skills of the task are implicitly described. In the second problem, the required skills of the tasks are explicitly described using some keywords but each expert has a limited capacity to perform these tasks and therefore should be assigned to a limited number of them. Finally, the third problem is the combination of the first and the second problems. Our proposed optimization framework is based on the Facility Location Analysis which is a well known branch of the Operation Research. In our experiments, we compare the accuracy and efficiency of the proposed framework with the state-of-the-art approaches for the group formation problems. The experiment results show the effectiveness of our proposed methods in comparison with state-of-the-art approaches.  相似文献   

2005年第十一届世界游泳锦标赛跳水比赛评析     

张其东  赵强 《山西师大体育学院学报》2005,20(Z1):104-107

通过对2005年第11届世界游泳锦标赛的跳水成绩进行对比分析研究,探索世界跳水发展趋势和世界跳水实力格局,为备战2008年奥运会提供理论参考。我国跳水运动仍然具有较大的优势,但前景不容乐观,有些项目的优势正在丧失,部分项目缺乏领军人物。我们必须认真研究跳水运动技术的发展趋势,提高科学化训练水平、强化心理素质和提高运动技术水平,才能继续保持我们的优势。  相似文献   

学术特刊出版的主题策划与质量控制——《科技导报》“屠呦呦荣获诺贝尔奖特刊”探析     

田恬  陈广仁 《中国科技期刊研究》2016,27(11):1139-1145

【目的】探索围绕重大科技事件高效出版学术特刊,有效提升期刊的新闻性及社会影响的策略。【方法】 以《科技导报》出版“屠呦呦荣获诺贝尔奖特刊”为例,阐述了特刊的出版策略：结合社会舆论热点策划选题,将科技事件外延,拓展选题思路;借助主办单位、编委、编辑等力量全方位组约稿;突破学术期刊框架,重视版面设计,加强整体包装;利用专家库、自身网站、博客资源,结合新媒体手段对刊物进行宣传推广。【结果】 针对重大科技事件组织特刊,能够增加主题内容的集中度,顺应社会热点的关注度,扩大科技期刊的影响力。【结论】 《科技导报》“屠呦呦荣获诺贝尔奖特刊”为响应科技事件的快速出版提供了一定经验和借鉴。  相似文献   

Expert systems: aspects of and limitations to the codifiability of knowledge     

Robin Cowan   《Research Policy》2001,30(9)

The creation of expert systems is one way in which knowledge is codified. In creating an expert system, in general there are three aspects to the codification process: creating a model of the knowledge to be codified; creating the language in which to express the model; and writing messages representing the knowledge in that language. These aspects have different relative importance in different contexts. Referring to four case studies, the paper argues further that codification through creating expert systems is not uniformly successful and part of the variation has to do with the nature of the knowledge, or intellectual process or activity being codified, and the difficulty in creating the model. Activities with fixed goals and linear processes lend themselves very well to this form of codification. Processes of categorization and analogy, such as fault detection and repair, are partially successful, tending more often to create systems for experts. Processes involving balancing conflicting goals have, to date, tended to be unsuccessfully codified. These process types involve knowledge or understanding at deeper and deeper levels of abstraction of the overall processes and overarching goals. The more abstract and less concrete the knowledge involved in the task, the more difficult it is to codify it.  相似文献   

发挥档案优势 强化教育功能 服务文化大发展大繁荣——江苏档案系统爱国主义教育基地建设回顾与展望     

邹华  刘鸿浩 《档案与建设》2011,(12):11-14

"十一五"期间,江苏档案系统爱国主义教育基地管理水平不断提升,场馆设施建设突飞猛进,教育服务功能日益突出。今后,必须进一步丰富活动形式,强化精品意识,健全管理运行机制,善于把握机遇,培育教育品牌,加强自身业务建设,进一步提高爱国主义教育基地工作的总体水平。  相似文献