共查询到20条相似文献，搜索用时 78 毫秒
1.
一种期刊综合影响力评价指标研究——对期刊综合影响力指数（JIII）的修正 总被引：1，自引：0，他引：1
2.
Journal weighted impact factor: A proposal 总被引：3，自引：0，他引：3
The impact factor of a journal reflects the frequency with which the journal's articles are cited. It is the best available measure of journal quality. For calculation of impact factor, we just count the number of citations, no matter how prestigious the citing journal is. We think that impact factor as a measure of journal quality, may be improved if in its calculation, we not only take into account the number of citations, but also incorporate a factor reflecting the prestige of the citing journals relative to the cited journal. In calculation of this proposed “weighted impact factor,” each citation has a coefficient (weight) the value of which is 1 if the citing journal is as prestigious as the cited journal; is >1 if the citing journal is more prestigious than the cited journal; and is <1 if the citing journal has a lower standing than the cited journal. In this way, journals receiving many citations from prestigious journals are considered prestigious themselves and those cited by low-status journals seek little credit. By considering both the number of citations and the prestige of the citing journals, we expect the weighted impact factor be a better scientometrics measure of journal quality. 相似文献
3.
The journal impact factor (JIF) is the average of the number of citations of the papers published in a journal, calculated according to a specific formula; it is extensively used for the evaluation of research and researchers. The method assumes that all papers in a journal have the same scientific merit, which is measured by the JIF of the publishing journal. This implies that the number of citations measures scientific merits but the JIF does not evaluate each individual paper by its own number of citations. Therefore, in the comparative evaluation of two papers, the use of the JIF implies a risk of failure, which occurs when a paper in the journal with the lower JIF is compared to another with fewer citations in the journal with the higher JIF. To quantify this risk of failure, this study calculates the failure probabilities, taking advantage of the lognormal distribution of citations. In two journals whose JIFs are ten-fold different, the failure probability is low. However, in most cases when two papers are compared, the JIFs of the journals are not so different. Then, the failure probability can be close to 0.5, which is equivalent to evaluating by coin flipping. 相似文献
4.
Many journals post accepted articles online before they are formally published in an issue. Early citation impact evidence for these articles could be helpful for timely research evaluation and to identify potentially important articles that quickly attract many citations. This article investigates whether Microsoft Academic can help with this task. For over 65,000 Scopus in-press articles from 2016 and 2017 across 26 fields, Microsoft Academic found 2–5 times as many citations as Scopus, depending on year and field. From manual checks of 1122 Microsoft Academic citations not found in Scopus, Microsoft Academic’s citation indexing was faster but not much wider than Scopus for journals. It achieved this by associating citations to preprints with their subsequent in-press versions and by extracting citations from in-press articles. In some fields its coverage of scholarly digital libraries, such as arXiv.org, was also an advantage. Thus, Microsoft Academic seems to be a more comprehensive automatic source of citation counts for in-press articles than Scopus. 相似文献
5.
Sergio Copiello 《Learned Publishing》2019,32(3):249-258
This paper takes the cue from the case of a retracted paper, cited both by the retraction notice and by an article published later in the same journal. This led to analysis and discussion on the skewness of citations in the journal Sustainability and within Multidisciplinary Digital Publishing Institute (MDPI) journals, particularly investigating self‐citations at journal and publisher levels. I analysed articles published by Sustainability in 2015 and found that self‐citations are higher than expected under a uniform probability distribution. Self‐citations in this journal make a 36% difference to the journal's impact factor. This research raises the question of what citation patterns can be expected as normal, and where the boundary between normal and anomaly lies. I suggest the issue deserves further investigation because self‐citations have several implications, ranging from impact factors to visibility and influence of scientific journals. 相似文献
6.
Bryan R. Coles 《Learned Publishing》1994,7(2):89-91
Scientists are users of science journals in two senses—to enter their own work and to learn of others—but are rarely the direct purchaser of them. The health of research is inextricably bound up with the learned journal. Muck is contributed by scientists to their journals in invisible ways, such as refereeing and editing. The creation of an archive of information is the primary service the journal supplies. Libraries pay for its entry into the system; research organizations and university faculties must recognize that this cost has to be met. The views expressed here are those of a publisher as well as of a user. 相似文献
7.
本文以5个学科的SCI期刊和论文为研究对象,取不同底数的对数对每一学科论文被引频次进行转换,计算各期刊对数矫正影响因子(IFlog),以各期刊IFlog除以所在学科所有期刊IFlog平均值,进行学科标准化处理,创建学科标准化影响因子(cnIFlog),探讨cnIFlog在学术期刊跨学科评价中的优越性。研究结果显示,5个学科期刊的IFlog均呈正态分布,且无论同一学科还是不同学科期刊的IFlog1.5、IFln、IFlog5、IFlog10之间均呈100%正相关(r=1.000,P=0.000)。与影响因子(IF2018)、平均影响因子百分位(average impact factor percentile,aJIFP)、期刊PR8指数(journal index of eight percentile rank classes,JIPR8)、IFlog和相对影响因子(relative IF2018,rIF2018)等指标相比,cnIFlog1.5(category normalization for IFlog1.5)在5个学科期刊中变异程度最小、与aJIFP和JIPR8的相关度最高,具有理想的区分度和稳定性。无论同一学科还是跨学科期刊评价,cnIFlog1.5均是理想的评价指标。 相似文献
8.
Faramarz Soheili Ali Akbar Khasseh Afshin Mousavi Chelak Mohammad Tavakolizadeh‐Ravari 《Learned Publishing》2018,31(2):121-129
Influence and capital are two concepts used to evaluate scholarly outputs, and these can be measured using the Scholarly Capital Model as a modelling tool. The tool looks at the concepts of connectedness, venue representation, and ideational influence using centrality measures within a social network. This research used co‐authorships and h‐indices to investigate authors who have published papers in the field of information behaviour between 1980 and 2015 as extracted from Web of Science. The findings show a relationship between the authors’ connectedness and the venue (journal) representation. It could be seen that the venue (journal) influences the chance of citation, and equally, the prestige (centrality) of authors probably raises the citations of the journals. The research also shows a significant positive relationship between the venue representation and ideational influence. This means that a research work that is published in a highly cited journal will find more visibility and will receive more citations. 相似文献
9.
文章从学术成果产出数量和学术影响力两个维度,对我国30所"985工程"大学图书馆从核心期刊发文数量和分布情况、论文被引数量和频次、论文的基金资助情况和论文国际化程度进行量化分析,并对一流大学图书馆的整体学术能力进行了综合评价和排名。 相似文献
10.
《Library Collections, Acquisitions, and Technical Services》2002,26(3):259-281
Few libraries have been immune to the impact of inflation on journal prices, and many have been involved in extensive journal cancellation projects. To aid in the cancellation decision process, Colorado State University Libraries have been compiling internal statistics on journal usage and merging them with statistics from commercial sources. This paper describes the process and outlines how the collected data can be used both to identify journals for cancellation and to provide justification for these decisions to the campus community.As the inflation rate of journals has outstripped many library budgets, cancellation projects have become a routine part of library collection management for universities. These projects are extremely difficult since decisions have serious implications for the collection and library relations with the academic departments. Deciding which journals should be canceled becomes a serious and frustrating task. Statistical information about a library collection can be a valuable tool in both identifying journals for cancellation and justifying cancellation decisions. The Colorado State University Libraries (CSUL) have been collecting a variety of statistics about the periodicals collection for several years. This article will discuss how these statistics were used in a recent cancellation project. 相似文献
11.
The promotion of scholarly journal articles to journalists and bloggers via the dissemination of press releases generates a positive impact on the number of citations that publicized journal articles receive. Research by John Wiley & Sons, Inc. shows that article‐level publicity efforts and media coverage boosts downloads by an average of 1.8 times and were found to increase citations by as much as 2.0–2.2 times in the articles analyzed in this study. We evaluated scholarly journal articles published in nearly 100 Wiley journals, which were also covered in 296 press releases. The results in this case study suggest a need for greater investment in media support for scholarly journals publishing research that sparks interest to a broad news audience, as it could increase citations. 相似文献
12.
Mohammad Reza Ghane 《Learned Publishing》2016,29(2):77-82
The references cited in scientific articles are as important as any other part of the paper, because of their usefulness to the scientific community and to abstracting and indexing services and citation databases. I studied inaccuracies in references and in‐text citations in sample of 97 of the 519 peer‐reviewed journals accredited by the Iranian National Commission for Journal Accreditation Policy (Ministry of Research, Science and Technology). The target journals published 2,980 articles with 74,577 cited references and 108,151 in‐text citations. The results showed 36.6% as the average percentage error rate (range 5.6% to 61.3%). The mean number of errors in cited reference and in‐text citations was 2.7 per article, and the mean number of errors per journal was 690. For the entire sample of articles, 4,369 in‐text citations did not match any source in the list of references (4%), and 8,683 cited references did not match any in‐text citation (11.6%). The stakeholders in scholarly communication, especially authors, pay insufficient attention to the accuracy of bibliographic references. Peer‐reviewed journals should encourage the use of standardized journal policies and quality‐control measures regarding peer review, data quality and accuracy. 相似文献
13.
Maureen Dwyer 《Health information and libraries journal》1999,16(3):174-191
The survey aims were to determine research priorities in the Health Library and Information Services sector in the United Kingdom as to their perceived value for the professional and impact on user needs and to identify areas suitable for collaborative research. A 34-member panel consisting of the Chairs of professional groups, journal editors, educationalists, key organizations and representatives from the Health Libraries Group, Libraries for Nursing and University Health Science Libraries professional groups, participated in a three-round postal questionnaire survey using the Delphi Technique. Consensus was achieved for a final set of 20 research priorities. The priorities and their category groups are discussed in the context of (i) the current R&D scene, and (ii) the health information environment. Six developmental recommendations are provided. 相似文献
14.
高校学报与专业期刊网络传播效果的比较 总被引：2，自引：0，他引：2
通过对数字化出版特点及网络传播规律的分析,认为:无论是高校学报还是专业期刊,在网络世界里科技期刊的汇编权被肢解,学术信息以微内容的形式存在和传播,平等地供使用者搜索;因此,长期困扰高校学报发展的综合性劣势在淡化,为高校学报的发展提供了机遇。利用中国学术期刊网络出版总库检索,获取部分高校学报和专业期刊2010年的发文量,以及在相同发表时间内的网络下载次数,并计算出每种期刊篇均下载次数。结果表明,与专业期刊相比,高校学报网络传播效果略占优势,影响传播的主要因素是科技期刊的内容和品牌效应而不是综合性或专业性。 相似文献
15.
The Web impact of open access social science research 总被引：1，自引：0，他引：1
For a long time, Institute for Scientific Information (ISI) journal citations have been widely used for research performance monitoring of the sciences. For the social sciences, however, the Social Sciences Citation Index® (SSCI®) can sometimes be insufficient. Broader types of publications (e.g., books and non-ISI journals) and informal scholarly indicators may also be needed. This article investigates whether the Web can help to fill this gap. The authors analyzed 1530 citations from Google™ to 492 research articles from 44 open access social science journals. The articles were published in 2001 in the fields of education, psychology, sociology, and economics. About 19% of the Web citations represented formal impact equivalent to journal citations, and 11% were more informal indicators of impact. The average was about 3 formal and 2 informal impact citations per article. Although the proportions of formal and informal online impact were similar in sociology, psychology, and education, economics showed six times more formal impact than informal impact. The results suggest that new types of citation information and informal scholarly indictors could be extracted from the Web for the social sciences. Since these form only a small proportion of the Web citations, however, Web citation counts should first be processed to remove irrelevant citations. This can be a time-consuming process unless automated. 相似文献
16.
《Journal of Informetrics》2014,8(1):77-88
One of the flaws of the journal impact factor (IF) is that it cannot be used to compare journals from different fields or multidisciplinary journals because the IF differs significantly across research fields. This study proposes a new measure of journal performance that captures field-different citation characteristics. We view journal performance from the perspective of the efficiency of a journal's citation generation process. Together with the conventional variables used in calculating the IF, the number of articles as an input and the number of total citations as an output, we additionally consider the two field-different factors, citation density and citation dynamics, as inputs. We also separately capture the contribution of external citations and self-citations and incorporate their relative importance in measuring journal performance. To accommodate multiple inputs and outputs whose relationships are unknown, this study employs data envelopment analysis (DEA), a multi-factor productivity model for measuring the relative efficiency of decision-making units without any assumption of a production function. The resulting efficiency score, called DEA-IF, can then be used for the comparative evaluation of multidisciplinary journals’ performance. A case study example of industrial engineering journals is provided to illustrate how to measure DEA-IF and its usefulness. 相似文献
17.
基于期刊共被引数据,本研究利用分层聚类和多维尺度分析方法考察新闻传播学期刊的集群分布及彼此之间的亲疏关系。数据分析表明:(1)新闻传播学期刊首先区分为新闻传播类期刊和编辑出版类期刊两大分支。(2)在新闻传播类期刊中,《电视研究》和《中国广播电视学刊》两者关系密切,但与其他期刊关系疏远。其他期刊按其亲疏关系又大致区分为两类:以学术研究为主导的研究型期刊和以实践总结为主导的行业性期刊。(3)在编辑出版类期刊中,《读书》和《中国图书评论》两者关系密切,但与其他期刊关系疏远。其他期刊按其亲疏关系又大致区分为三类:科技编辑出版类期刊、以出版为重点的出版类期刊和以编辑为重点的编辑类期刊。 相似文献
18.
19.
学术界目前大多从静态角度评价学术期刊影响力,比较缺乏动态角度的相关研究。文章借助牛顿第二定律的原理,旨在探索评价学术期刊动态影响力的指标和方法,从期刊影响速度、加速度及影响强度三个角度展开研究,并提出期刊影响强度的概念。以CSSCI经济学期刊为研究对象,基于中国知网CNKI的引文数据库,综合采用相关分析、回归分析、Kappa一致性检验等方法进行研究。研究结果表明:期刊影响强度可以作为一个期刊评价的新指标;期刊影响强度具有较好的区分度;期刊影响强度与h指数、篇均被引量具有正相关关系;建议采用期刊影响速度、加速度与影响强度评价期刊。 相似文献