Gender differences in research collaboration     

Giovanni Abramo  Ciriaco Andrea D’Angelo  Gianluca Murgia 《Journal of Informetrics》2013,7(4):811-822

The debate on the role of women in the academic world has focused on various phenomena that could be at the root of the gender gap seen in many nations. However, in spite of the ever more collaborative character of scientific research, the issue of gender aspects in research collaborations has been treated in a marginal manner. In this article we apply an innovative bibliometric approach based on the propensity for collaboration by individual academics, which permits measurement of gender differences in the propensity to collaborate by fields, disciplines and forms of collaboration: intramural, extramural domestic and international. The analysis of the scientific production of Italian academics shows that women researchers register a greater capacity to collaborate in all the forms analyzed, with the exception of international collaboration, where there is still a gap in comparison to male colleagues.  相似文献   

Scientific impact assessment cannot be fair     

Marek Gagolewski 《Journal of Informetrics》2013,7(4):792-802

In this paper we deal with the problem of aggregating numeric sequences of arbitrary length that represent e.g. citation records of scientists. Impact functions are the aggregation operators that express as a single number not only the quality of individual publications, but also their author's productivity.We examine some fundamental properties of these aggregation tools. It turns out that each impact function which always gives indisputable valuations must necessarily be trivial. Moreover, it is shown that for any set of citation records in which none is dominated by the other, we may construct an impact function that gives any a priori-established authors’ ordering. Theoretically then, there is considerable room for manipulation in the hands of decision makers.We also discuss the differences between the impact function-based and the multicriteria decision making-based approach to scientific quality management, and study how the introduction of new properties of impact functions affects the assessment process. We argue that simple mathematical tools like the h- or g-index (as well as other bibliometric impact indices) may not necessarily be a good choice when it comes to assess scientific achievements.  相似文献   

Universality of scholarly impact metrics     

Jasleen Kaur  Filippo Radicchi  Filippo Menczer 《Journal of Informetrics》2013,7(4):924-932

Given the growing use of impact metrics in the evaluation of scholars, journals, academic institutions, and even countries, there is a critical need for means to compare scientific impact across disciplinary boundaries. Unfortunately, citation-based metrics are strongly biased by diverse field sizes and publication and citation practices. As a result, we have witnessed an explosion in the number of newly proposed metrics that claim to be “universal.” However, there is currently no way to objectively assess whether a normalized metric can actually compensate for disciplinary bias. We introduce a new method to assess the universality of any scholarly impact metric, and apply it to evaluate a number of established metrics. We also define a very simple new metric h_s, which proves to be universal, thus allowing to compare the impact of scholars across scientific disciplines. These results move us closer to a formal methodology in the measure of scholarly impact.  相似文献   

《情报学进展》年度评论5卷载文的定量分析   总被引：4，自引：0，他引：4  

黄国威 《高校图书馆工作》2005,25(1):18-21,41

对《情报学进展》第1-5卷发表的论文从论文作者、发文机构、主题等方面进行定量分析,同时对该年前四卷发表论文的被引频次、来源期刊、高被引论文等进行文献计量学分析,对第五卷发表的论文和《情报学进展》进行了简单的评价。参考文献5。  相似文献   

国内蚁科昆虫研究的文献计量学分析   总被引：1，自引：0，他引：1  

杨小华  何英武  周善义 《现代情报》2009,29(7):210-212

以《中国期刊全文数据库》和《中文科技期刊全文数据库》为数据源,运用文献计量学的原理和方法,对1989-2007年国内蚁科昆虫研究专题文献进行统计分析,探讨这些文献的文献学特征(年代、期刊源和学科方向分布,作者和研究机构特征,以及科学基金资助状况),揭示该研究领域的动态变化和发展态势。  相似文献   

2004—2007年我国开放存取研究论文定量分析   总被引：1，自引：0，他引：1  

刘红珠  岳泉 《新世纪图书馆》2009,(1)

论文采用文献计量学方法,对2004-2007年间我国开放存取研究论文进行统计,分析了这一时期开放存取研究论文的年代分布、期刊分布、核心作者群以及主题分布等,探讨了我国开放存取的研究状况.  相似文献   

Modeling a century of citation distributions   总被引：1，自引：1，他引：0  

Matthew L. Wallace  Vincent Larivire  Yves Gingras 《Journal of Informetrics》2009,3(4):296-303

The prevalence of uncited papers or of highly cited papers, with respect to the bulk of publications, provides important clues as to the dynamics of scientific research. Using 25 million papers and 600 million references from the Web of Science over the 1900–2006 period, this paper proposes a simple model based on a random selection process to explain the “uncitedness” phenomenon and its decline over the years. We show that the proportion of cited papers is a function of (1) the number of articles available (the competing papers), (2) the number of citing papers and (3) the number of references they contain. Using uncitedness as a departure point, we demonstrate the utility of the stretched-exponential function and a form of the Tsallis q-exponential function to fit complete citation distributions over the 20th century. As opposed to simple power-law fits, for instance, both these approaches are shown to be empirically well-grounded and robust enough to better understand citation dynamics at the aggregate level. On the basis of these models, we provide quantitative evidence and provisional explanations for an important shift in citation practices around 1960. We also propose a revision of the “citation classic” category as a set of articles which is clearly distinguishable from the rest of the field.  相似文献   

学术期刊被引过程的机制探究     

杨浦 《中国科技期刊研究》2017,28(6):553-557

【目的】 探究学术期刊被引过程的机制。【方法】 应用数理统计方法分析《河南师范大学学报(自然科学版)》2010—2014年文献被引指标的动态分布。应用统计物理的随机动力学方法建立数学模型,并对学术期刊被引过程进行数值模拟。【结果】 总结《河南师范大学学报(自然科学版)》被引规律。建立了相应的数学模型。数值模拟结果与实际数据相符。用数学模型计算了期刊影响因子的正常波动区间。【结论】 将统计物理思想应用于文献计量学的方法是可行且有效的。  相似文献   

基于专利计量的区块链技术发展现状及关键技术分析     

刘建明  颜学明 《科技管理研究》2021,41(16):37-44

以智慧芽专利数据库收录的区块链专利文献为数据源,运用专利计量法从时间、地域、专利权人多个维度进行专利数据分析,揭示区块链技术发展趋势,挖掘典型机构和高价值专利,利用UCINET软件分析关键技术,并对中国区块链技术的发展概况进行分析.研究发现:区块链技术正处于快速发展期,中美两国是领跑者;保密或安全通信装置、支付体系机构、方案或协议等技术领域已成为区块链的热点技术,底层技术逐渐受到重视;中国区块链产业主要集中在广东、北京等发达省份,虽然在全球具有规模优势,但是专利质量相较美国仍有一定差距,未来可能会面临"卡脖子"风险.最后根据研究结果,提出要从政府层面做好区块链产业技术的顶层设计,从产业层面加速区块链与其他产业的融合发展,从区域层面支持基础好的地区开展示范应用,从企业层面鼓励加大研发投入、打造拳头产品.  相似文献   

论数据库检索系统用于文献计量分析   总被引：6，自引：1，他引：5  

陈光祚 《情报科学》1998,16(2):122-127

笔者自建了一个CDS/ISIS软件支持的、包括6万多篇文献记录的图书馆学、情报学、文献学、档案学的书目数据库,该库不仅收录期刊论文,而且也收录专著、教材、工具书、会议文献、学位论文以及大型手册、教材中的部分篇章子目,使之形成包含多种类型文献的综合性数据库,并开发利用检索软件中固有的功能,例如建立子库法、编辑倒排文件法、关键词标引与题名中单汉字检索相结合以增强检索语言性能的方法、后控词表(ANY词表)法、对文献发表年代的数值字段函数检索法等等,就80年代以来我国图书情报学科群的文献进行了各种指标的文献计量分析。笔者认为,基于包含多种类型文献、时间跨度较长的数据库检索系统,并应用各种软件功能的文献计量方法,是我国文献计量分析的发展方向。  相似文献