共查询到20条相似文献，搜索用时 78 毫秒
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论文献的科学评价功能 总被引：6，自引：0，他引：6
论文献的科学评价功能娄策群ＡＢＳＴＲＡＣＴＳｉｎｃｅｐｕｂｌｉｃａｔｉｏｎｓａｒｅｒｅｓｕｌｔｓｏｆｒｅｓｅａｒｃｈａｎｄｔｈｅｉｒｍｅ－ｄｉａ，ｔｈｅｙｒｅｆｌｅｃｔｖａｒｉｏｕｓａｓｐｅｃｔｓｏｆｓｃｉｅｎｃｅａｎｄｔｈｕｓｈａｖｅｔｈｅｆｕｎｃ... 相似文献
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合作咨询服务──信息资源共享新途径 总被引：3，自引：0，他引：3
合作咨询服务──信息资源共享新途径沈固朝Ａｂｓｔｒａｃｔ：Ｔｈｅｐａｐｅｒｂｒｉｅｆｓｔｈｅｓｉｇｎｉｆｉｃｅｎｃｅｓｏｆｔｈｅｃｏｏｐｅｒａｔｉｖｅｒｅｆｅｒｅｎｃｅｓｅｒｖｉｃｅｓａｎｄｔｅｈｅｘｐｅｒｉｅｎｃｅｓａｃｑｕｉｒｅｄｆｒｏｍｔｅｈｄ... 相似文献
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论我国信息资源现状与发展策略 总被引：13，自引：0，他引：13
论我国信息资源现状与发展策略Ａｂｓｔｒａｃｔ：ＴｈｅｒｅａｒｅｐｒｏｂｌｅｍｓｅｘｉｓｔｅｄｉｎｔｈｅＣｈｉｎｅｓｅｉｎｆｏｒｍａｔｉｏｎｒｅｓｏｕｒｃｅｓ：ｄｅｆｉｃｉｅｎｃｙｏｆｄｅｖｅｌｏｐｍｅｎｔａｎｄｕｓｅ，ｄｉｍｃｏｎｓｃｉｏｕｓｎｅｓｓ... 相似文献
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图书馆员职业道德实践中的良心观 总被引：1，自引：0，他引：1
图书馆员职业道德实践中的良心观蔡金钟Ａｂｓｔｒａｃｔ：Ｔｈｅｃｏｎｃｓｃｉｅｎｃｅｃｏｎｃｅｐｔｐｌａｙｓａｎｉｍｐｏｒｔａｎｔｒｏｌｅｆｏｒｌｉｂｒａｒｉａｎｓｉｎｔｈｅｐｒｏｆｅｓｓｉｏｎａｌｅｔｈｉｃｓｐｒａｃｔｉｃｅｓ．Ｉｔｃｏｎ－ｔａｉｎｓ... 相似文献
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我国综合性文献光盘数据库的比较研究 总被引：6，自引：0，他引：6
我国综合性文献光盘数据库的比较研究●何建新ＡＢＳＴＲＡＣＴＡｃｏｍｐａｒａｔｉｖｅｓｔｕｄｙｉｓｃｏｎｄｕｃｔｅｄｏｎｔｈｅｔｗｏｋｉｎｄｓｏｆｄｏ－ｍｅｓｔｉｃｃｏｍｐｒｅｈｅｎｓｉｖｅｏｐｔｉｃａｌｄｉｓｃｄａｔａｂａｓｅｓ：ｔｈｅ＂ｄａｔａｂａ... 相似文献
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情报科学技术的新发展 总被引：1，自引：0，他引：1
情报科学技术的新发展谢新洲Ａｂｓｔｒａｃｔ：Ｉｎｆｏｒｍａｔｉｏｎｓｃｉｅｎｃｅａｎｄｔｅｃｈｎｏｌｏｇｙｈａｓｉｎｔｈｅｒｅｃｅｎｔｙｅａｒｓｍａｋｅａｖｅｒｙｆａｓｔｐｒｏｇｒｅｓｓ，Ｔｈｅｐａｐｅｒｉｎｔｒｏｄｕｃｅｓｎｅｗｐｒｏｇｒｅｓｓｅｓ... 相似文献
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论高校文献课教学的发展规律 总被引：5，自引：0，他引：5
论高校文献课教学的发展规律朱育培Ａｂｓｔｒａｃｔ：Ｉｎｐｒｏｃｅｓｓｏｆｉｎｓｒｕｃｔｉｎｇｄｏｃｕｍｅｎｔａｔｉｏｎｃｏｕｒｓｅｉｎｃｏｌｌｅｇｅｓａｎｄｕｎｉｖｅｒｓｉｔｉｅｓ，ｔｈｅｉｎｆｏｒｍａｔｉｏｎｃｏｎｓｃｉｏｕｓｎｅｓｓｏｆｔｅａｃｈ... 相似文献
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对新形势下学术活动的思考王启宇Ａｂｓｔｒａｃｔ：Ｌｉｂｒａｒｙａｃａｄｅｍｉｃａｃｔｉｖｉｔｉｅｓｕｎｄｅｒｔｈｅｎｅｗｓｉｔｕａｔｉｏｎｈａｖｅｗｉｔｎｅｓｓｅｄｎｅｗｔｒｅｎｄｓ．Ｓｏｃｉｅｔｉｅｓｏｆｌｉｂｒａｒｙｓｃｉｅｎｃｅｓｈｏｕｌｄｂｏ... 相似文献
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Keshra Sangwal 《Journal of Informetrics》2013,7(2):487-504
The distributions of citations L, two- (IF2) and five-year impact factors (IF5), and citation half-lives λ of journals published in different selected countries are analyzed using Langmuir-type relation: yn = y0 {1 ? αKn/(1 + Kn)}, where yn denotes Ln, IF2n or IF5n of n-ranked journal, y0 is the value of yn when journal rank n = 0, α is an empirical effectiveness parameter, and K is the Langmuir constant. It was found that: (1) the general features of the distribution of Ln, IF2n or IF5n of the journals published in different individual countries are similar to the results obtained before by the author from the analysis of the citation distribution data of papers of individual authors (K. Sangwal, Journal of Informetrics 7 (2013) 36–49), (2) in contrast to the theoretically expected value of the effectiveness parameter α = 1, the calculated values of α > 1 for journals published in different countries, (3) the trends of the distribution of cited half-lives λn of journals differ from those of Ln, IF2n and IF5n data for different countries, and show one, two or three linear regions, the longest linear regions with low slopes are observed in the case of countries publishing relatively high number of journals, and (4) the product of the Langmuir constant K and the number N of journals for the processes of citations and two- and five-year impact factors of journals published in different countries is constant for a process. The results suggest that: (1) the values of α > 1 are associated with a process that retards the generation of items (i.e. citations or impact factors), the difference (α ? 1) being related to the dissemination of contents of the journals published by a country, and (2) the constancy of KN is related to the publication potential of a country. 相似文献
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In the present work we introduce a modification of the h-index for multi-authored papers with contribution based author name ranking. The modified h-index is denoted by hmc-index. It employs the framework of the hm-index, which in turn is a straightforward modification of the Hirsch index, proposed by Schreiber. To retain the merit of requiring no additional rearrangement of papers in the hm-index and in order to overcome its shortage of benefiting secondary authors at the expense of primary authors, hmc-index uses combined credit allocation (CCA) to replace fractionalized counting in the hm-index. The hm-index is a special form of hmc-index and fits for papers with equally important authors or alphabetically ordered authorship. There is a possibility of an author of lower contribution to the whole scientific community obtaining a higher hmc-index. Rational hmc-index, denoted by hmcr-index, can avoid it. A fictitious example as a model case and two empirical cases are analyzed. The correlations of the hmcr-index with the h-index and its several variants considering multiple co-authorship are inspected with 30 researchers’ citation data. The results show that the hmcr-index is more reasonable for authors with different contributions. A researcher playing more important roles in significant work will obtain higher hmcr-index. 相似文献
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Lutz Bornmann Rüdiger Mutz Sven E. Hug Hans-Dieter Daniel 《Journal of Informetrics》2011,5(3):346-359
This paper presents the first meta-analysis of studies that computed correlations between the h index and variants of the h index (such as the g index; in total 37 different variants) that have been proposed and discussed in the literature. A high correlation between the h index and its variants would indicate that the h index variants hardly provide added information to the h index. This meta-analysis included 135 correlation coefficients from 32 studies. The studies were based on a total sample size of N = 9005; on average, each study had a sample size of n = 257. The results of a three-level cross-classified mixed-effects meta-analysis show a high correlation between the h index and its variants: Depending on the model, the mean correlation coefficient varies between .8 and .9. This means that there is redundancy between most of the h index variants and the h index. There is a statistically significant study-to-study variation of the correlation coefficients in the information they yield. The lowest correlation coefficients with the h index are found for the h index variants MII and m index. Hence, these h index variants make a non-redundant contribution to the h index. 相似文献
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Abstract This article introduces the Partnership for Shared Book Collections, a federation of monograph shared print programs. Collaboration of programs at the network level allows for:
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Reducing the cost of retaining the scholarly record through shared distribution of commitments;
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De-duplicating efforts;
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Developing and promoting evidence-based best practices;
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Increasing the effectiveness of communication with end-users and funders;
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Tackling large-scale projects and research that are out of reach for individual shared print programs. This shared stewardship of collection is critical as local resources are depleted due to the COVID-19 pandemic and access to print for digitization increases.
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This paper reviews a number of studies comparing Thomson Scientific’s Web of Science (WoS) and Elsevier’s Scopus. It collates their journal coverage in an important medical subfield: oncology. It is found that all WoS-covered oncological journals (n = 126) are indexed in Scopus, but that Scopus covers many more journals (an additional n = 106). However, the latter group tends to have much lower impact factors than WoS covered journals. Among the top 25% of sources with the highest impact factors in Scopus, 94% is indexed in the WoS, and for the bottom 25% only 6%. In short, in oncology the WoS is a genuine subset of Scopus, and tends to cover the best journals from it in terms of citation impact per paper. Although Scopus covers 90% more oncological journals compared to WoS, the average Scopus-based impact factor for journals indexed by both databases is only 2.6% higher than that based on WoS data. Results reflect fundamental differences in coverage policies: the WoS based on Eugene Garfield’s concepts of covering a selective set of most frequently used (cited) journals; Scopus with broad coverage, more similar to large disciplinary literature databases. The paper also found that ‘classical’, WoS-based impact factors strongly correlate with a new, Scopus-based metric, SCImago Journal Rank (SJR), one of a series of new indicators founded on earlier work by Pinski and Narin [Pinski, G., & Narin F. (1976). Citation influence for journal aggregates of scientific publications: Theory, with application to the literature of physics. Information Processing and Management, 12, 297–312] that weight citations according to the prestige of the citing journal (Spearman’s rho = 0.93). Four lines of future research are proposed. 相似文献
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作为社会化搜索理念框架的一个重要组成部分,社会化问答系统(SQA)对Web 2.0用户的信息搜寻与知识获取方式产生了深远影响。在新一代互联网用户生成内容(UGC)环境下,虽然有关信息质量及其评价标准与维度的研究已取得一定程度的进展,但国内目前对SQA系统答案质量要素、SQA信息质量评价指标的研究仍缺乏足够的深度。本文以现有相关研究为基础,在社会化搜索的研究背景下,借助“百度知道”用户对答案质量感知的问卷,综合采用专家访谈、探索性因子分析和验证性因子分析方法,构建了一个基于SQA系统的社会化搜索答案质量评价模型SQA-IQ4Ⅲ,该模型包括内容质量、情境质量、来源质量和情感质量四个维度,共有18项关键性指标要素。研究结论将进一步扩展图书情报学和网络信息资源管理的研究领域,并对SQA用户获取高质量答案以及UGC产品/服务设计产生实际的帮助。图2。表9。参考文献40。 相似文献
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A comparison of analyses of the Scottish publishing industry carried out in 1992, 2002 and 2007 underscores the fragility
of the sector within a small country within the English-language community. A number of indices reveal either stability or
stagnation and the picture emerges of the remarkable tenacity of publishing in Scotland. Although there is already a significant
and vital element of state support for publishing in Scotland, further intervention will be necessary to ensure fulfilment
of its potential.
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| Alistair McCleeryEmail: |
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Ursula Feindor 《Publishing Research Quarterly》2002,18(1):3-13
Conclusion Protecting a merchandising program by the given means of Law means safeguarding substantial investment for obtaining a certain
Merchandising Property. Therefore protection should be found at a very early stage and has to be maintained with great care
to avoid later conflicts and loss of money. Before starting a merchandising program four steps should be resolved:
This article was first presented at the 15th International Rights Directors Meeting, “Branding, Licensing and Merchandising—Rights
Income through Brands and Characters” during the Frankfurt Book Fair, Germany, October 9, 2001. 相似文献
| 1. | Find out what you want to merchandise. What has the potential? |
| 2. | Find out who is the owner of that intellectual property. |
| 3. | Protect the property against piracy. |
| 4. | Safeguard your expenses by solid contracts. |
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《Communication monographs》2012,79(2):102-106
The account sequence is proposed as a mechanism by which parties to initial encounters deal with the discovery of dissimilarity and other conversational “disagreeables.” A classification of offense, reproach, account, and evaluation forms is offered. The recorded conversations of 50 pairs of strangers were examined for the presence of account sequences. Each sequence was coded for type of offense, type of reproach, account strategy, and form of evaluation of the account. Persons were found to be likely to omit accounting when reproached for interaction offenses, work/school offenses, and personal identity offenses, or when the form of the reproach was a direct rebuke or imputation of moral/intellectual superiority of the reproacher. Excuses were most likely to be offered for offenses of taste/attitude/belief, work/school, and personal identity. Reproached individuals refused to account for personal identity and taste/attitude/belief offenses more often than other types; they also refused when the reproach forms direct rebuke, moral/intellectual superiority, and direct request for account were employed. Evaluation behavior was shown to vary only with the immediately preceding account. Honoring was the evaluation form most often associated with the account strategy excuse. Evaluators were significantly likely to retreat if the account‐giver conceded or justified. When the account strategy was doesn't account, justify, or refuse, there was a significant tendency for evaluators to reject/take issue/reinstate the reproach. Finally, when the reproached individual did not account, one evaluation form significantly associated with the omission was drop/switch topic. 相似文献