电子版新书目在图书采访工作中的应用   总被引：4，自引：0，他引：4  

刘哲 《中国图书馆学报》2004,30(4)

电子版书目具有时效性、可操作性、可用性等特点。深圳图书馆使用电子版书目的实 践证明,电子版书目在订购查重、订购数据录入和订购信息传递等方面比印刷型书目有着更多 的优越性,能大幅度提高图书采购工作效率。图2。参考文献2。  相似文献   

Analysis of format duplication in an academic library collection     

Amanda Maple  Carol Wright  Robert Seeds 《Library Collections, Acquisitions, and Technical Services》2004,27(4):425-442

The issue of format duplication in academic library collections is increasingly complicated and perplexing in an environment of static or dwindling resources, soaring user expectations, dynamic access models, and inconsistent and changing publisher and vendor pricing structures. The problem is further complicated for libraries serving a university with multiple campus locations. This paper surveys recent investigative projects and highlights the work of a Duplicate Formats Task Force at Pennsylvania State University charged with determining the extent and nature of format duplication at that institution.  相似文献   

图书馆数字资源访问统计研究   总被引：10，自引：0，他引：10  

马建霞 《图书馆杂志》2005,24(8):25-29

分析了国内外图书馆数字资源访问统计的研究现状，探讨了进行图书馆数字资源访问统计的方法，比较了数字资源访问统计的指标，并就目前我国图书馆数字资源访问统计存在的问题进行了讨论。  相似文献   

高校图书馆电子图书与OPAC系统整合初探   总被引：4，自引：1，他引：4  

巩林立 《图书馆杂志》2005,24(10):44-46

将高校图书馆电子图书与OPAC书目查询系统整合在一起，为读者开辟了更加快捷地获取文献全文的渠道。本文结合实际，就电子图书与图书馆OPAC系统的整合谈一些看法。  相似文献   

电子资源服务绩效评估的含义及影响因素分析   总被引：12，自引：1，他引：12  

索传军 《图书情报知识》2005,(6):66-69

本文在对国内外研究现状分析的基础上，对电子资源服务绩效的含义与作用，以及其影响因素等进行了系统的分析。  相似文献   

Could scientists use Altmetric.com scores to predict longer term citation counts?     

Mike Thelwall  Tamara Nevill 《Journal of Informetrics》2018,12(1):237-248

Altmetrics from Altmetric.com are widely used by publishers and researchers to give earlier evidence of attention than citation counts. This article assesses whether Altmetric.com scores are reliable early indicators of likely future impact and whether they may also reflect non-scholarly impacts. A preliminary factor analysis suggests that the main altmetric indicator of scholarly impact is Mendeley reader counts, with weaker news, informational and social network discussion/promotion dimensions in some fields. Based on a regression analysis of Altmetric.com data from November 2015 and Scopus citation counts from October 2017 for articles in 30 narrow fields, only Mendeley reader counts are consistent predictors of future citation impact. Most other Altmetric.com scores can help predict future impact in some fields. Overall, the results confirm that early Altmetric.com scores can predict later citation counts, although less well than journal impact factors, and the optimal strategy is to consider both Altmetric.com scores and journal impact factors. Altmetric.com scores can also reflect dimensions of non-scholarly impact in some fields.  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   

现代电子系统设计手段研究     

李林 《重庆职业技术学院学报》2004,13(3):107-109

在现代电子系统中,传统的方法已不能满足现代系统的需要,但现代电子系统的设计手段繁多,不好掌握.本文系统地分析总结了现代各类电子系统的设计手段,并提出了现代设计手段的不足和发展方向.  相似文献   

学报创办60期誌言     

《潍坊教育学院学报》编辑部 《潍坊教育学院学报》2006,19(2):103-104

本文认真回顾思考创办院刊学报19年60期来的经验,总结在农村基层办教育学术期刊的特殊规律和做法,并分析此类杂志在新时期所面临的挑战及对策。  相似文献   

编辑应重视对修改稿的复审     

陆宜新 《编辑学报》2016,28(1):34-36

为了解《山东医药》近6年刊载文章统计学方法的应用情况,并对存在的问题提出意见和建议,随机抽取《山东医药》2009-2014年发表的论文进行统计学方法系统分析.结果发现统计学错误最常见的是t检验代替方差分析、不注明所用的统计学方法和不具体写出统计值.认为医学论文作者要充分认识统计学的重要性,编辑部应加强统计学方法审查工作.  相似文献