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1.
准确地研究和测度科学知识之间的逻辑关系和结构体系,是进行科学政策研究和科研项目资助布局等科研管理活动的重要基础。学术期刊作为科学知识传播和交流的重要平台,是探测科学知识结构的一种有效载体,但是不同的学术期刊分类体系对科学知识结构的测度结构会产生直接而广泛的影响。文章从学术期刊分群的角度出发,考虑期刊在共被引过程中的距离因素,通过采用深度学习算法,来进行期刊的相似度计算与分群问题研究,在此基础上进行科学知识结构测度方法研究,并以中国人文社会科学期刊引文数据库为实验对象进行了实证研究。从实证结果来看,我国人文社会科学学科知识结构存在较为明显的结构划分,不同学科类别或不同研究领域的期刊都被分到了相应的群组,表明从期刊使用的角度来看,我国人文社会科学知识结构边界是相对较为清晰的。在此基础上重点对法学期刊的两个群组的科学研究主题进行了挖掘,从关键词的共现网络中可以明显看出,两个期刊群体内的研究主题虽有一定的交叉,但是两者在具体研究内容上也存在着显著区别。 相似文献
2.
The study explores the characteristics of China's independent research articles published from 1980 to 2011, based on the database of Science Citation Index Expanded. The publication outputs of seven major industrialized countries including Canada, France, Japan, Germany, Italy, the UK, and the USA were compared with China. Annual production, field performance, research emphases and trends, top articles, as well as main institutional and individual contributors by its top cited articles were analyzed. Some newly developed indicators related to words in title, author keywords, KeyWords Plus, first author, corresponding author, and Y-index were employed to provide in-depth information on topic and author contributions. Results showed that China has been closing the gap with the USA with the greatest growth, and has stood the second since 2006. Most top cited articles were published in 2000s, made up approximately seven tenths of total articles. Pronounced activities were found in chemistry and physics related categories. The core categories included multidisciplinary chemistry, physical chemistry, multidisciplinary materials science, and applied physics. Moreover, China's performance of nanotechnology and science, especially carbon nanotubes, nanoparticles, nanowires, and nanostructures showed dramatic growth. Six top articles with at least 1000 citations were examined, and were observed to concern medicine, nanotube, and adsorption. In addition, main contributing institutions and authors were also revealed and evaluated. Chinese Academy of Sciences played a dominant role, and Tsinghua University, Peking University and five universities in Hong Kong showed good scientific performance. 相似文献
3.
Henk F. Moed 《Journal of Informetrics》2010,4(3):265-277
This paper explores a new indicator of journal citation impact, denoted as source normalized impact per paper (SNIP). It measures a journal's contextual citation impact, taking into account characteristics of its properly defined subject field, especially the frequency at which authors cite other papers in their reference lists, the rapidity of maturing of citation impact, and the extent to which a database used for the assessment covers the field's literature. It further develops Eugene Garfield's notions of a field's ‘citation potential’ defined as the average length of references lists in a field and determining the probability of being cited, and the need in fair performance assessments to correct for differences between subject fields. A journal's subject field is defined as the set of papers citing that journal. SNIP is defined as the ratio of the journal's citation count per paper and the citation potential in its subject field. It aims to allow direct comparison of sources in different subject fields. Citation potential is shown to vary not only between journal subject categories – groupings of journals sharing a research field – or disciplines (e.g., journals in mathematics, engineering and social sciences tend to have lower values than titles in life sciences), but also between journals within the same subject category. For instance, basic journals tend to show higher citation potentials than applied or clinical journals, and journals covering emerging topics higher than periodicals in classical subjects or more general journals. SNIP corrects for such differences. Its strengths and limitations are critically discussed, and suggestions are made for further research. All empirical results are derived from Elsevier's Scopus. 相似文献
4.
国家自然科学基金资助妇产科学课题发文情况分析 总被引：1，自引：0，他引：1
应用文献计量学方法对中国期刊全文数据库（医药卫生专辑）收录的2000—2005年国家自然科学基金（NSFC）资助的妇产科学论文产出情况进行分析和讨论。结果表明,自2000年以来我国相关论文量逐年递增,显示了相关科研的后劲与创新发展态势,其专业分布与我国医学科研领域的重点项目和发展思路一致,但存在着一定程度的地区、机构及期刊分布差异。相关部门应对科研单位的人才培养、人才储备、科研实力、科研管理水平以及激励机制等相关因素进行更深入的分析研究。 相似文献
5.
There is an overall perception of increased interdisciplinarity in science, but this is difficult to confirm quantitatively owing to the lack of adequate methods to evaluate subjective phenomena. This is no different from the difficulties in establishing quantitative relationships in human and social sciences. In this paper we quantified the interdisciplinarity of scientific journals and science fields by using an entropy measurement based on the diversity of the subject categories of journals citing a specific journal. The methodology consisted in building citation networks using the Journal Citation Reports® database, in which the nodes were journals and edges were established based on citations among journals. The overall network for the 11-year period (1999–2009) studied was small-world and followed a power-law with exponential cutoff distribution with regard to the in-strength. Upon visualizing the network topology an overall structure of the various science fields could be inferred, especially their interconnections. We confirmed quantitatively that science fields are becoming increasingly interdisciplinary, with the degree of interdisplinarity (i.e. entropy) correlating strongly with the in-strength of journals and with the impact factor. 相似文献
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7.
《期刊图书馆员》2013,64(3-4):135-151
The Study of Electronic Literature for Astrophysics Research (STELAR) experiment is exploring what is required to bring the astrophysics literature online. The experiment is being conducted jointly with publishers, authors, copyright holders, libraries, and others involved in the production and dissemination of the astrophysics literature. STELAR is a pilot project designed to Study the technical and practical aspects of making the refereed scientific literature available online. The primary database contains machine-readable abstractions of articles from eight journals of inlerest to astronomers. The current publicly accessible system contains the text of the abstracts, which are being indexed and made available using Wide Area Information Server (WAIS) and World Wide Web (WWW), providing a plain English query capability and simple document etrieval. The complete system, which includes the ability to retrieve scanned images of the pages of selected articles, is available to test subjects through selected astronomical libraries. 相似文献
8.
美国自然科学期刊编辑新动向及思考 总被引：1，自引：0，他引：1
科学技术的发展日新月异,学科的衍生分支愈加细密深化,学科之间的渗透相融日益加强,交叉学科、边缘学科大量涌现,自然科学期刊如雨后春笋,为争取成为权威性、生存力强的期刊而斗争,已成为美国自然科学期刊编辑新动向的主流。本文指出了体现这一编辑新动向的种种作法,并结合我国自然科学期刊的编辑实践,发人思考,从中悟出改革我国自然科学期刊编辑工作应走的道路,以期在世界权威期刊之林中,争得我国应有的一席之地。 相似文献
9.
《The Journal of Academic Librarianship》2022,48(4):102535
The aim of this study was to examine the interdisciplinarity of research data in the science, technology, engineering, and mathematics (STEM) fields. The findings revealed that interdisciplinarity was not distributed evenly across journals serving the STEM fields. Based on the diversity of the references as measured by the Gini coefficient index, the mathematical sciences showed the greatest inequality, followed by astronomy/physics, the earth sciences, the biological sciences, and technology. Based on the number of Essential Science Indicator (ESI) fields, the biological sciences showed the greatest variety, followed by the earth sciences, technology, the mathematical sciences, chemistry, and computing, while engineering showed no variety. Lastly, based on the Leydesdorff interdisciplinarity formula outcomes, the earth sciences showed the greatest diversity, but earth sciences articles were cited in articles in fewer fields than biological sciences articles. This study contributes to the study of interdisciplinary data citation for data sharing and reuse in STEM fields with respect to the measurement of the balance, variety, and diversity of research data. 相似文献
10.
本研究旨在揭示多学科交叉综合领域内的核心学科并分析学科间内在联系与演变,以此来分析领域内学科态势。以人工智能领域为研究对象,探讨该领域内相关学科的分布,分析学科相互间的关联和研究相似性及演化,为科学研究和政策制定提供支持。对文献资料进行预处理后,用关键词表征学科研究内容,并通过词袋模型构建学科向量;分别从基础统计、共现分析和相似性分析来研究学科的分布、人工智能与其他学科之间以及两两学科之间的相似性与演化。结果表明,人工智能领域内以计算机科学和工程为核心,以数学为基础,并逐渐延伸到社会科学、生物科学等领域,由单一的理论和技术研究向多学科应用领域发展。领域内学科的多元化也促进了管理学和法学等学科研究内容的转变。本研究分析路径可以在一定程度上揭示学科研究的跨学科发展趋势。 相似文献
11.
Journal articles are the most common publication format for U.S. academic health sciences librarians. This is consistent with the findings of other researchers. Of the total publications in this study, 68% were in journals. Watson found that 69% of the academic librarians' publications were published in some type of journal [8]. Similarly, Yerkey and Glogowski found that 67% of the publications in their study were journal articles, although their population consisted of all types of authors of library/information science materials [9]. Both the present study and Watson found that monographs were the second most common publication outlet. Watson found that 16% of the total publications were monographs; the current study identified 14.8% of the total publications as monographs [10]. Although Watson's findings are similar to the newer results, it is important to note that Watson's study was conducted in a different manner and included book reviews, which were not counted in the present study. The health sciences librarians in the present study published more than two thirds of their articles in library/information science journals and 27% in health sciences journals. Similarly, in Yerkey and Glogowski's study, the second-largest number of library/information science articles appeared in medical and health sciences journals [11]. Fang also found that 22.57% of the journal articles on health sciences librarianship or by health sciences librarians were in medical journals [12. This seems to demonstrate the desire of health sciences librarians to communicate with the health professionals. Yerkey and Glogowski that library and information science is an interdisciplinary field, "borrowing and supplying information to and from other disciplines"[13]. 相似文献
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13.
科技期刊是进行学术交流的媒介和传播最新科技信息的载体。提高质量是办好期刊的中心环节,而对期刊质量的评价则是促进提高期刊水平的重要手段。作者指出,客观反映是科技期刊质量评定的重要依据。鉴于期刊门类多,涉及面广,故必须按学术类(包括学报及通报)及技术类分别从科技期刊所起的作用、内容及形式等客观反映去衡量评定其质量高低。以《化工学报》为例,结合作者的反馈信息体现出该刊论文所起作用,并通过联机检索得悉美国《化学文摘》(CA)对该刊的选摘率高达93％以上,体现出其内容是优质的。另参考国外同类学报对比中找差距。明确改进目标。此外,出版、印刷行业评比为优质书刊,则是编辑和印刷装帧水平的客观体现。 相似文献
14.
This paper stems from the observation that researchers in different fields tend to publish in different journals. Such a relationship between researchers and journals is quantitatively exploited to identify scientific community clusters, by casting the community detection problem into a co-clustering problem on bipartite graphs. Such an approach has the potential of leading not only to the fine- grained detection of scholar communities based on the similarity of their research activity, but also to the clustering of scientific journals based on which are the most representative of each community. The proposed methodology is purely data-driven and completely unsupervised, and does not rely on any semantics (e.g. keywords or a-priori subjective categories). Moreover, unlike “flat” data structures (e.g. collaboration graphs or citation graphs) our bipartite graph approach blends in a joint structure both the researcher's attitude and interests (i.e., freedom to select the venue where to publish) as well as the community's recognition (i.e., acceptance of the publication on a target journal); as such may perhaps inspire further scientometric evaluation strategies. Our proposed approach is applied to the Italian research system, for two broad areas (ICT and Microbiology&Genetics), and reveals some questionable aspects and community overlaps in the current Italian scientific sectors classification. 相似文献
15.
由Web of Science数据库分析高影响力中华医学会系列期刊引发的思考 总被引：4，自引：0，他引：4
通过Web of Science数据库的“被引参考文献检索”途径,将中华医学会123种非SCI期刊作为国内大量的非SCI科技期刊的代表,统计其刊载文献被SCI期刊引用的情况;以被引文献数量大于50篇作为高影响力期刊的筛选条件,分析其中高影响力期刊的被引文献数量、单篇被引文献最高引用频次、施引文献数量、施引文献最高被引频次以及施引文献的国家地区分布、出版年份分布,从而了解这些非SCI科技期刊的国际影响力.基于这一分析,认为SCI期刊并非是获得同行认可的唯一途径,国内大量的非SCI科技期刊应走“立足国内,面向世界”的发展道路,以踏实做专业领域内有影响力的期刊为目标;同时呼吁国家有关部门能对现行科研评价指标进行调整,鼓励质量上乘的稿件能选择具有影响力的国内期刊发表. 相似文献
16.
[目的/意义]从主题视角对环境科学领域的零被引论文进行分析,对比零被引论文与高被引论文在文章内容、外在指标方面的不同,揭示零被引论文存在的原因。[方法/过程]首先,对来自Web of Science数据库的国内环境科学领域的260篇高被引论文、907篇零被引论文的摘要进行PLDA主题识别,然后通过主题相似度计算发现主题间的关联,以主题热度作为内部指标,发文时间、发文期刊作为外部评价指标,最后,把论文主题内容与外部指标结合进行零被引与高被引论文之间的相同主题、不同主题对比分析。[结果/结论]在研究主题相同情况下,期刊的影响因子大小是影响零被引论文的主要因素;在主题不同的情况下,论文研究的主题内容是导致零被引论文的主要原因。 相似文献
17.
Fitzpatrick RB 《Medical reference services quarterly》2005,24(4):67-78
The Essential Science Indicators (ESI) database, published by Thomson Scientific/ISI, presents an array of data that ranks scientists/health professionals, their individual papers, and the journals in which they are published, as well as countries and institutions that perform scientific research. By using this resource, it is possible to prepare ranked statistical lists. The resource covers 6,000 journals published in both the United States and from international publishers. Users should note that ESI covers scientific information in the broadest possible scope, so this is not just limited to biomedical topics and resources. 相似文献
18.
《Library Collections, Acquisitions, and Technical Services》2002,26(3):231-239
The BioOne database of scholarly journals in the biological and ecological sciences was established in the belief that broad and enduring access to scholarly literature is essential not just to the health of the scientific enterprise but also to the health of the wider society in which science is practiced. The prevailing model of profit-based journal publishing – in which high prices are impeding access – is harming the interests of the very scientists who provide its life-blood. The BioOne business model seeks to meet the interlocking goals of providing broad and enduring access, supporting the publishing enterprise of scholarly societies, and assuring that BioOne will keep pace with changes in technology and scientific communication. 相似文献
19.
对科技期刊学术质量评估体系中参考文献构建指标的调查与研究 总被引：20，自引：2，他引：20
通过对我国38所高校自然科学版学报所载论文14717篇参考文献的调查与分析,得出如下结论:科技期刊学术质量评估体系中参考文献评估指标由近期文献引文率、核心期刊与经典专著引文率、外文文献引文率、中文文献引文率、篇均引文、无引文率等项内容所构建。另外,引文著录规范化率是否纳入评估指标体系之中,有待商讨。我们认为,为了全面提高科技期刊的学术质量,引文著录规范化问题理应引起科技期刊编辑的重视。如将此纳入评估体系中,首先必须确定出全国统一的科技期刊参考文献标准著录格式(目前标准不一致)。不然,评估既不合理,也缺乏可比性。 相似文献
20.
The open access (OA) model for journals is compared to the open source principle for computer software. Since the early 1990s nearly 1,000 OA scientific journals have emerged – mostly as voluntary community efforts, although recently some professionally operating publishers have used author charges or institutional membership. This study of OA journals without author charges shows that their impact is still relatively small, but awareness of it is increasing. The average number of research articles per year is lower than for major scientific journals but the publication times are shorter. 相似文献