Investigating the quality of interactions and public engagement around scientific papers on Twitter     

Fereshteh Didegah  Niels Mejlgaard  Mads P. Sørensen 《Journal of Informetrics》2018,12(3):960-971

This study explores science communication on Twitter by investigating a sample of tweets referring to academic papers in five different scientific fields. The specifications of science communicators on Twitter, the characteristics of those who initiate actions (by tweeting), the extent and quality of reactions (retweeting), individual and group interactions, and the distribution of tweets across types of engagement in the process of science communication (i.e., dissemination, consultation, and evaluation) were explored. A broad array of actors is involved in the communication of science on Twitter, with individual citizens and individual researchers playing an important role. In principle, this is promising for creating direct interaction, which can be difficult through more traditional mass media. The vast majority of communication activities regarding academic papers is undigested dissemination with almost no sign of debate, contestation, or collective reflection. Another general finding of this study is that bot accounts play a major role in the science communication landscape on Twitter.  相似文献   

Impact Factors and the Central Limit Theorem: Why citation averages are scale dependent     

Manolis Antonoyiannakis 《Journal of Informetrics》2018,12(4):1072-1088

Citation averages, and Impact Factors (IFs) in particular, are sensitive to sample size. Here, we apply the Central Limit Theorem to IFs to understand their scale-dependent behavior. For a journal of n randomly selected papers from a population of all papers, we expect from the Theorem that its IF fluctuates around the population average μ, and spans a range of values proportional to $\sigma /\sqrt{n}$, where σ² is the variance of the population's citation distribution. The $1/\sqrt{n}$ dependence has profound implications for IF rankings: The larger a journal, the narrower the range around μ where its IF lies. IF rankings therefore allocate an unfair advantage to smaller journals in the high IF ranks, and to larger journals in the low IF ranks. As a result, we expect a scale-dependent stratification of journals in IF rankings, whereby small journals occupy the top, middle, and bottom ranks; mid-sized journals occupy the middle ranks; and very large journals have IFs that asymptotically approach μ. We obtain qualitative and quantitative confirmation of these predictions by analyzing (i) the complete set of 166,498 IF & journal-size data pairs in the 1997–2016 Journal Citation Reports of Clarivate Analytics, (ii) the top-cited portion of 276,000 physics papers published in 2014–2015, and (iii) the citation distributions of an arbitrarily sampled list of physics journals. We conclude that the Central Limit Theorem is a good predictor of the IF range of actual journals, while sustained deviations from its predictions are a mark of true, non-random, citation impact. IF rankings are thus misleading unless one compares like-sized journals or adjusts for these effects. We propose the Φ index, a rescaled IF that accounts for size effects, and which can be readily generalized to account also for different citation practices across research fields. Our methodology applies to other citation averages that are used to compare research fields, university departments or countries in various types of rankings.  相似文献   

Dimensions: A competitor to Scopus and the Web of Science?     

Mike Thelwall 《Journal of Informetrics》2018,12(2):430-435

Dimensions is a partly free scholarly database launched by Digital Science in January 2018. Dimensions includes journal articles and citation counts, making it a potential new source of impact data. This article explores the value of Dimensions from an impact assessment perspective with an examination of Food Science research 2008–2018 and a random sample of 10,000 Scopus articles from 2012. The results include high correlations between citation counts from Scopus and Dimensions (0.96 by narrow field in 2012) as well as similar average counts. Almost all Scopus articles with DOIs were found in Dimensions (97% in 2012). Thus, the scholarly database component of Dimensions seems to be a plausible alternative to Scopus and the Web of Science for general citation analyses and for citation data in support of some types of research evaluations.  相似文献   

高职院校"思想政治理论课"社会实践教学评估思考     

刘秀梅  刘增安 《石家庄铁路职业技术学院学报》2006,5(4):97-101

加强对高职“思想政治理论课”社会实践教学效果的评估工作的研究，不仅能够更好地实现“思想政治理论课”教学目的，而且还能为社会提供所需要的合格的劳动者．  相似文献   

浅谈多媒体教学与学生创新思维的培养     

伊宏伟  刘清涛 《邢台职业技术学院学报》2006,23(2):28-29

本文通过对多媒体教学及创新思维的简析，并在结合多年的教学实践经验的基础上，探讨了在多媒体教学手段广泛应用的现代教学环境下，如何培养大学生创新思维的几点思考。  相似文献   

作业治疗连环互动教学模式探讨     

姜爱华 《金华职业技术学院学报》2005,5(3):115-116,119

本文探索适合我国国情的创新性作业治疗教学模式。其方法是在理论课、实验室、自习课及见习课中，通过启发、激趣、设疑和探究等促使师生互动。在所有的课堂中师生互动，学生成为作业治疗方案的设计者。连环互动教学模式，是培养学生创新思维及创新能力的一种创新教学模式。  相似文献   

高校文科专业文献学教学的反思     

余全介 《重庆第二师范学院学报》2011,24(4):158-161

针对文献学课程作为选修课常常受到文献检索等课程的挤压,作为必修课又受到教学对象主、客观两方面因素的制约的情况,提出文献学对于文史哲等专业的治学研究有指导作用,对于学生知识体系的建构和完善有着非同一般的意义,应该成为文科专业的基础课。改进文献学的教学现状,教师必须注意文献学观念的转变,注意与国学教育相融合,提升自己的学术含量,提高自己的文化品格,实现教学策略的调整。  相似文献   

针对大学生新特点做好大学生思想政治工作   总被引：1，自引：1，他引：0  

黄锁义 《高教论坛》2011,(1):16-18,21

分析了我校药学系大学生的思想状况和表现特征,着重讨论了新形势下大学生思想政治工作新的对策和方法。  相似文献   

Elementary school children’s understanding of science: The implementation of an extracurricular science intervention     

《Contemporary educational psychology》2017

The promotion of students’ achievement and competence in the so-called STEM disciplines is one cornerstone of current educational research and practice. In particular, as early as elementary school, the fostering of an adequate understanding of science is a normative goal of science education. It facilitates students’ science learning and enables them to understand the nature and development of scientific knowledge. Based on the relevance of the promotion of young children’s understanding of science, a corresponding science intervention was recently developed and successfully evaluated in a first study under highly controlled conditions. The goal of the present study was to investigate the effectiveness of this intervention when implemented in practice. One hundred seventeen third- and fourth-grade students and 10 trained course instructors participated in this study. We applied a randomized block design with waitlist control groups and repeated measures. The results revealed that children assigned to the intervention compared with children assigned to the waitlist control group showed better inquiry-related methodological competencies (a better understanding of the scientific inquiry cycle and experimentation strategies) and a higher need for cognition. The findings point to the successful implementation of the intervention and are compared with the results of the first study.  相似文献   

当代大学生思想问题的解决策略——“思想分析”在辅导员工作中的应用     

刘先锐 《唐山师范学院学报》2014,(4):127-129

大学生心理问题和思想问题既相互区别又相互联系,高校辅导员对于两类性质各异的问题要采用不同的策略。大学生思想问题的分析和疏导可以采用“思想分析”的方法,思想分析继承和发展了马克思主义分析问题的思想方法,分析的过程也是开解思想“症结”的过程,“解惑、去苦”中运用的方法和技术有“宁静法”“四阶段法”“认知颖悟法”等。  相似文献