排序方式： 共有132条查询结果，搜索用时 140 毫秒
21.
Farzad Ashrafi Hafez Mohammadhassanzadeh Farhad Shokraneh Ali Valinejadi Karim Johari Nazanin Saemi Alireza Zali Niloofar Mohaghegh Hassan Ashayeri 《Health information and libraries journal》2012,29(4):323-332
Objective: The purpose of this study is to analyse Iranian scientific publications in the neuroscience subfields by librarians and neuroscientists, using Science Citation Index Expanded (SCIE) via Web of Science data over the period, 2002–2008. Methods: Data were retrieved from the SCIE. Data were collected from the ‘subject area’ of the database and classified by neuroscience experts into 14 subfields. To identify the citation patterns, we applied the ‘impact factor’ and the ‘number of publication’. Data were also analysed using HISTCITE, Excel 2007 and SPSS. Results: Seven hundred and thirty‐four papers have been published by Iranian between 2002 and 2008. Findings showed a growing trend of neuroscience papers in the last 3 years with most papers (264) classified in the neuropharmacology subfield. There were fewer papers in neurohistory, psychopharmacology and artificial intelligence. International contributions of authors were mostly in the neurology subfield, and ‘Collaboration Coefficient’ for the neuroscience subfields in Iran was 0.686 which is acceptable. Most international collaboration between Iranians and developed countries was from USA. Eighty‐seven percent of the published papers were in journals with the impact factor between 0 and 4; 25% of papers were published by the researchers affiliated to Tehran University of Medical Sciences. Conclusion: Progress of neuroscience in Iran is mostly seen in the neuropharmacology and the neurology subfields. Other subfields should also be considered as a research priority by health policymakers. As this study was carried out by the collaboration of librarians and neuroscientists, it has been proved valuable for both librarians and policymakers. This study may be encouraging for librarians from other developing countries. 相似文献
22.
科学的评价科技人才不仅有助于人才的发现和任用,更有助于人才的成长进步。但如何评价一个科技人才？目前尚无科学统一的方案。本文以医学专业人才为例,结合影响因子法、加权平均法、多数据库法、布拉德福定律法、贡献法、同行专家评议法等评价方法,从医学科技人才科技论文、论文被引、科技成果、科技进步奖、图书专著、发明专利、承担科研课题、学术任职、新药研发等主要科研活动项目出发,提出了定量评价人才的公式、指标,并初步构建了科技人才科技影响力的综合评价模式。 相似文献
23.
[目的/意义]旨在研究科学计量方法在科技政策研究中的应用程度和范围。[方法/过程]对科学计量领域与科技政策领域的实证数据集进行关键词分析,设计二维词频分析框架,并在此基础上通过聚类分析揭示不同类型的计量与政策研究相结合的主题。[结果/结论]数据结论显示：科学计量方法在科学政策研究中的应用主要是在宏观层面,而在微观问题层面应用相对较少;一些利用科学计量方法研究的政策问题并非是科技政策领域的研究热点或核心。这种情形与科学计量学的学科特点与使用局限性有一定的关系,但如何恰当扩展和深化科学计量方法在科技政策领域的应用,以解决科技政策中的具体问题、更好地支撑科技管理与科技决策,需要引起关注。 相似文献
24.
[目的/意义]提出一种深入到文献内部、以文献中隐性专业知识本身作为计量对象的科学计量方法,为在大数据等新环境下开展面向专业实践应用的科学计量研究提供新思路。[方法/过程]在对知识元研究进行系统梳理基础上,结合案例提出一种具有计量属性、表征科学内涵的专业知识元定义,并以地震预警领域为例对基于知识元科学计量方法的可行性和实用性进行检验。[结果/结论]基于知识元的科学计量方法,能够实现科学计量与内容分析的有机结合,以专业用户的关注点作为切入方向,通过对文献中专业知识元的抽取分析,为用户提供解决实际问题的知识产品,满足专业用户的情报需求。 相似文献
25.
Zeynep Ceren Akyüz Ricardo Aleixo Correia 《International Information and Library Review》2017,49(1):11-18
Increasing political and financial support for scientific research in the Middle East requires academic and research communities in the region to demonstrate the visibility and impact of their scientific output. However, for countries with smaller scientific communities or lack of detailed information on their scientific production, the use of common metrics of scientific impact (e.g., number of papers, impact factor, h-index, etc.) may fail to reveal their true ability to produce high quality research, and thus guarantee the wanted societal support. In such cases, identifying and highlighting outstanding papers produced by national institutions or scientists may be another way to demonstrate scientific capacity and impact. In this context, this work aims to provide an overview of champion works (papers that have received over 1,000 citations) produced by Middle East countries. This analysis focuses on science, medicine, and technology papers featured in the Science Citation Index Expanded of Web of Science. The authors identified 213 champion works authored by Middle East scientists published since the 1970s. Israel is currently the leading nation in the Middle East in terms of published champion works, but at least one such work was identified for the majority of countries in the region. Middle East champion works were published on a diverse range of subject categories and often featured in the top journals worldwide (e.g., Science, Nature, etc.). The top institutions in the Middle East authoring champion works and their leading collaborating countries worldwide are listed, and the role of international scientific collaborations in achieving these highly cited papers is highlighted. 相似文献
26.
基于SNA的国际科学计量学作者共被引关系研究——以SCIENTOMETRICS期刊2000-2010年数据为例 总被引：1，自引：0，他引：1
本文以SCIENTOMETRICS期刊2000-2010年数据为例,利用作者共被引分析方法,采用社会网络分析技术,对国际科学计量学领域进行了分析。其中,运用了Bibexcel这一文献计量工具构建作者共被引矩阵,然后使用社会网络分析软件Ucinet绘制其网络图谱,并对网络特性进行了分析,展示了国际科学计量学领域的研究现状。 相似文献
27.
科学学理论体系建构的思考——基于科学计量学的中外科学学进展研究报告 总被引：24，自引：5，他引：19
近10年来,国内外科学学的发展正在形成科学学理论体系的新框架。本文从科学学的研究传统与范式入手,运用科学计量学一系列方法和手段,对中外科学学研究的主要领域、相关学科以及热点问题进行了深入的考察和比较,结果表明以科学、技术、创新以及相关的科技政策与管理为内容的科学学应用研究是当前的主流领域;网络计量学、科学知识图谱和信息可视化技术发展迅猛,正成为科学学方法研究的前沿领域;有关科学、技术与创新相互作用规律、自然科学某些学科的演化规律以及科学技术合作理论等成为科学学理论研究的热门领域。在此基础上,对新世纪科学学理论体系按“研究维-学科维-对象维”的三维结构建构进行了初步探讨。 相似文献
28.
《Journal of Informetrics》2014,8(3):581-593
Bornmann, Stefaner, de Moya Anegón, and Mutz (2014) have introduced a web application (www.excellencemapping.net) which is linked to both academic ranking lists published hitherto (e.g. the Academic Ranking of World Universities) as well as spatial visualization approaches. The web application visualizes institutional performance within specific subject areas as ranking lists and on custom tile-based maps. The new, substantially enhanced version of the web application and the generalized linear mixed model for binomial data on which it is based are described in this paper. Scopus data are used which have been collected for the SCImago Institutions Ranking. Only those universities and research-focused institutions are considered that have published at least 500 articles, reviews and conference papers in the period 2006–2010 in a certain Scopus subject area. In the enhanced version, the effect of single covariates (such as the per capita GDP of a country in which an institution is located) on two performance metrics (best paper rate and best journal rate) is examined and visualized. A covariate-adjusted ranking and mapping of the institutions is produced in which the single covariates are held constant. The results on the performance of institutions can then be interpreted as if the institutions all had the same value (reference point) for the covariate in question. For example, those institutions can be identified worldwide showing a very good performance despite a bad financial situation in the corresponding country. 相似文献
29.
时间因子与科研生产系统稳态 总被引：1，自引：1，他引：0
探讨了发文周期、科研寿命以及统计抽样期限对于发文率的影响,在此基础上说明了验证洛特卡规律的正确方法———作为社会分层结构的表征而非表面的统计结论,从而寻找内在的社会结构与发文率差异之间的联系。假定科学家具有平均科研寿命和恒定发文速率,假定科研生产系统规模与结构的稳态,对洛特卡规律进行了进一步的验证。 相似文献
30.
以赵红州主编的《大科学年表》中1540-1950年的3487件科学事件作为统计样本,得出了近代科学事件和数学事件随时间发展的总体趋势,并讨论了近代三次科学革命和数学革命的特点和联系;进而给出近代数学高潮形成和转移的规律分布,对近代数学高潮、哲学高潮以及科学中心期进行了比较研究。同时结合历史背景,对近代数学的发展进行了分析。 相似文献