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91.
我国图书馆知识管理研究进展述评 总被引:16,自引:0,他引:16
本文采用文献统计的方法,对近几年来国内有关图书馆知识管理的期刊论文进行了统计分析,以期对我国图书馆知识管理的研究进展的动态和成果进行一番考察,进而讨论研究中存在的问题,并对今后的研究发展提出了建议。 相似文献
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93.
产业政策发力,推动广播媒体迈向新台阶。广播业不仅在事业上继续进步,而且在产业经营的道路上已经起步。收听率上升,广告实行代理制,多种联合开始,跨媒体、跨行业、跨地域经营已有先例。再努力:广播节目市场化程度不高,缺少规范的交易平台,收入来源对广告依赖性过大,广播广告与其他媒体广告相比较所占份额过低,广播的地区性发展不平衡。 相似文献
94.
[目的/意义] 针对均等化视角下中美社区图书馆阅读推广实践的差异进行比较分析,旨在中美社区图书馆相互借鉴的基础上,提高社区图书馆的服务水平和质量。[方法/过程] 以中国宁波市社区图书馆、美国密尔沃基市社区图书馆为例,利用个案分析和对比分析的方法比较中美社区图书馆开展的阅读推广均等化实践。[结果/结论] 通过对社区图书馆服务的供给均等、过程均等和消费均等的对比与分析,得出均衡资源配置、实现阅读推广供给均等化,创新文化活动形式与内容、实现阅读推广过程均等化,尊重读者自由选择权利、实现阅读推广消费均等化,依托文化特色、宣传社区图书馆均等化服务以及构建城市社区公共文化服务平台,共建、共享社会文明新成果的启示。 相似文献
95.
[目的/意义] 针对学术期刊文本资源语义标注仍存在的通用本体难以构建、标注粒度单一两大问题,提出基于SKOS的学术期刊多粒度语义标注方法,从而进一步推进语义标注的应用发展,更好满足用户的多粒度学术信息需求。[方法/过程] 在对《中国汉语主题词表》进行SKOS描述的基础上,以学术期刊文本资源为对象,实现其多粒度语义标注,并通过实证研究验证该方法的可行性。[结果/结论] 利用SKOS实现对学术期刊文本资源进行多粒度语义标注,较之当前学术检索系统中的标注结果,在"查全"查准"内部特征检索入口"检索结果反馈形式"4个方面具有一定优势。 相似文献
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97.
Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献
98.
We have studied the efficiency of research in the EU by a percentile-based citation approach that analyzes the distribution of country papers among the world papers. Going up in the citation scale, the frequency of papers from efficient countries increases while the frequency from inefficient countries decreases. In the percentile-based approach, this trend, which is uniform at any citation level, is measured by the ep index that equals the Ptop 1%/Ptop 10% ratio. By using the ep index we demonstrate that EU research on fast-evolving technological topics is less efficient than the world average and that the EU is far from being able to compete with the most advanced countries. The ep index also shows that the USA is well ahead of the EU in both fast- and slow-evolving technologies, which suggests that the advantage of the USA over the EU in innovation is due to low research efficiency in the EU. In accord with some previous studies, our results show that the European Commission’s ongoing claims about the excellence of EU research are based on a wrong diagnosis. The EU must focus its research policy on the improvement of its inefficient research. Otherwise, the future of Europeans is at risk. 相似文献
99.
王璐 《湖南大众传媒职业技术学院学报》2004,4(2):102-103
投稿取向对期刊编辑出版工作有着重要影响。诸如时间环境背景、政策导向、作者自身价值取向、编辑出版系统几个方面对投稿取向均有影响。 相似文献
100.
Rocío Cupeiro Miguel A. Rojo-Tirado Cristina Cadenas-Sanchez Enrique G. Artero Ana B. Peinado Idoia Labayen 《Journal of sports sciences》2020,38(13):1506-1515
ABSTRACT The aim of the present study was to investigate the existence of a relative age effect (RAE) on physical fitness of preschoolers. Anthropometry and physical fitness were assessed in 3147 children (3–5 years old) using the PREFIT battery. Based on the birth year, participants were divided into 3year groups (3-, 4- and 5-years). Within each year group, 4quarter groups were created: quarter 1, preschoolers born from January to March; quarter 2, from April to June; quarter 3, from July to September; quarter 4, from October to December. The MANCOVA analysis revealed a main effect of year group (Wilks’ λ = 0.383; F10,5996 = 369.64; p < 0.001, ηp 2 = 0.381) and of quarter (Wilks’ λ = 0.874; F15,8276.6 = 27.67; p < 0.001; ηp 2 = 0.044) over the whole battery of tests. To the best of our knowledge, this is the first study to report the existence of RAE at the preschool stage. In general, performance improved as the relative age increased (i.e., those born in quarter 1 performed better than those in the other quarters). Individualization strategies should be addressed within the same academic year not only in elementary or secondary years but also in preschoolers. 相似文献