共查询到20条相似文献，搜索用时 23 毫秒
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《文物保护研究》2013,58(3):108-124
AbstractThe causes of deterioration of the gilded bronze doors of the Baptistery in Florence have been examined and the mechanism of corrosion discussed. An apparatus for thermal conditioning has been proposed and tested either on the north door of the Baptistery, or on samples exposed to the urban atmosphere in Milan and by laboratory tests on an electrochemical model. The effectiveness of the proposed apparatus has been verified by weight losses, by assessing soluble salts, by visual observations, by local chemical microanalyses, by morphological examinations with a scanning electron microscope equipped with an X-spectrometer and by X-ray diffraction. 相似文献
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李成晴 《大学图书情报学刊》2014,32(6):121-123
日本德川时代的儒学家皆川淇园解说的《唐诗通解》一书,在日本曾产生一定影响。该书并非以李攀龙《唐诗选》为直接底本,而是以《唐诗选》在汉地的派生本潘耒评《唐诗选平》或《唐诗选平笺注》为依据进行的解说。文章旨在通过对此特定个案的考察,探寻汉籍在流播日本过程中的沿承与衍化。 相似文献
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《文物保护研究》2013,58(3):133-142
AbstractThis study considers the impregnation of wood by two acrylic monomers, methylmethacrylate and butylmethacrylate, and examines their subsequent polymerization in wood samples initiated chemically and by gammaradiation. The results of the polymerization were assessed on the basis of the resultant polymer content of the wood, and it was found that polymerization initiated by gammaradiation was more effective. The influence of the consolidation by monomer polymerization upon the properties of the wood (hygroscopicity, water absorption, swelling andcompression strength alorig the fibres) was found to depend on the polymer content of the wood, on the polymercomposition and on the type and structure of the wood. Copolymerization of methylmethacrylate and butylmethacrylate has no benefit on the properties of the wood. 相似文献
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责任者名称(个体和团体)的规范与否对数字图书馆目录的两大功能具有重大的影响。文章运用实体—关系模型即E-R模型描述了责任者名称(实体)的变化、实体的属性及相互关系;通过属性、关系对用户需求的映射,运用SQL解决名称变化对检索结果产生的不利影响,从而提升目录的两大功能。 相似文献
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《International Information and Library Review》1994,26(3):139-150
This paper attempts to shed some light on the scientific communication behavior of Arab authors in library and information science by studying the characteristics of the literature used by these authors. A bibliometric study by way of citation analysis was conducted on the articles published from 1978 to 1988 in Maktabat Al-Idarah, an elite Arab scholarly journal in the field. It was concluded from this study that English literature is the main source of information for Arab authors in library and information science. They rely on English literature that is between 5 and 15 years of age more than on their own literature and use books more than any other form of publication. They cover almost all areas of the field with special emphasis on technical services as represented by cataloging, classification and aquisition, library administration and library education. Local materials published in their own country were also important. 相似文献
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James S. Sass 《Communication Studies》2013,64(3):195-217
This study focuses and extends the academic literature on spirituality in organizations. Although spirituality has gained attention in organizational scholarship during the past decade, there has been little systematic development. Current literature on spirituality in organizations is characterized by divergent approaches to spirituality and a number of organizational foci. The present study, based on qualitative field research in a nursing home, advances understanding of spirituality in organizations by identifying three central characteristics of organizational spirituality: value alignment, personal spirituality, and relationship‐based organizing. These central characteristics, supported by the field research and current literature on spirituality in organizations, lead to issues for further research. The study concludes with an invitation for dialogue on the emergent topic of organizational spirituality. 相似文献
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基于访谈的竞争情报搜集方法研究 总被引：8，自引：1，他引：7
本文依据竞争情报搜集工作的实践经验 ,系统阐述了竞争情报访谈活动面临的主要困难 ,探讨了开展竞争情报访谈活动应遵守的道德规范 ,详细描述了综合运用竞争对手敏感信息流分析和用户竞争情报需求分解两种方法确定有效访谈对象的过程 ,并在对影响竞争情报访谈活动过程的关键因素进行充分讨论的基础上 ,提出了竞争情报访谈活动的基本模型 相似文献
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选取1999-2010年期间Web of Science有关国际空间站的主题数据,分别使用Spss 17、Ucinet和CiteSpace Ⅱ等软件,采用基于高频词的因子分析法、基于高频词的战略坐标图法和基于CiteSpace突发词的图谱法等探测方法,对国际空间站前沿进行探测,并对比实验效果,发现因子分析可客观地探测热点主题,战略坐标图可确定热点中的潜在主题领域,CiteSpace则可直观地展示主题演变情况,而综合利用这三种方法可以更为全面地捕捉到国际空间站研究领域的前沿热点。 相似文献
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《Government Information Quarterly》2020,37(4):101498
Nudging is seen to complement or replace existing policy tools by altering people's choice architectures towards behaviors that align with government aims, but has fallen short in meeting those targets. Crucially, governments do not nudge citizens directly, but need private agents to nudge their consumers. Based on this notion, the paper takes on an institutional approach towards nudging. Rather than looking at the relationship between nudger and nudgee, the research analyses the regulatory and market structures that affect nudge implementation by private actors, captured by the ‘budge’ idea. Focusing on the European energy policy domain, the paper analyses the contextual factors of green nudges that are initiated by Member States, and implemented by energy companies. The findings show that in the smart meter context, there are regulatory measures that affect implementation of smart meters and that government has a central role to ‘budge’, due to the dependence on private agents. 相似文献
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As electronic government (e-government) becomes increasingly important in the presentation of government information to citizens, the potential impacts of e-government on the democratic process must be carefully considered. E-government clearly has the potential to become an institution that helps to ensure reasoned reflection about political issues and active participation in deliberative democracy by citizens and by members of the government. Though the Internet presents innovative new methods for conveying government information to citizens, it also presents new and serious potential impediments to deliberative democracy, such as group polarization about political issues by online social groups. The ability of e-government sites either to foster democratic dialogue by presenting multiple viewpoints or to enable polarization on political issues by promoting specific views demonstrates a key question about the conceptual foundations of e-government. Drawing upon perspectives from information studies, public policy, law, and governance, this article examines the differing political implications between e-government built on a foundation of participation and on a foundation of polarization. 相似文献
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《Journal of Informetrics》2022,16(2):101293
We study the effects of an article featured on the cover of the journal Nature on citations to all articles published by its authors. Based on 30 years of bibliometric data, we find that cover articles are cited significantly more than non-cover articles, with this difference being long-lasting. However, when considering all articles (past and future) by Nature authors, we find that the publication of a cover article causes citations to previous articles by its authors to decline relative to citations to articles by non-cover authors. 相似文献
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《Journal of Informetrics》2022,16(4):101323
Engagement on social networks is a complex concept, in which many interconnected, difficult-to-assess components interact. It is precisely this complexity which motivated this work, which proposes a composite index as a tool to measure engagement. Using TOPSIS, a multicriteria method that bases its ranking on minimizing the distance to the ideal point and maximizing the distance to the anti-ideal, a mix of indicators based on two approaches is used: the tweet approach and the follower approach. The former reflects engagement based on user production, and the latter measures engagement by popularity. This index was applied to a group of Social Media Influencers and a general ranking was obtained, as well as a ranking by each approach to measuring engagement. A comparison of the rankings generated by the different approaches shows the suitability and pertinence of both, as it is confirmed that they measure different aspects, and that both are needed to offer a holistic view of the engagement generated by a user on Twitter; this is a new finding compared to prior studies, which only focused on one approach or the other. 相似文献
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ABSTRACTThis article analyzes what the audience understands by the concept of quality as applied to television channels. This research also examines the influence of the perceived quality of the different programs broadcasted by a channel on the perceived quality of the whole channel. The empirical part is based on the answers provided by a sample of 405 respondents in Spain. The factors found to be associated with the idea of quality television by the audience are somewhat different depending on the method used to assess it, which points to the existence of social desirability bias when asking directly about it. Notwithstanding these differences, entertainment is the characteristic that the audience most consistently associates with the concept of quality in television channels. The results also show that news programs, movies and magazines, and talk shows are the genres with a greatest influence on the assessment of the quality of a television channel by the audience. 相似文献
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朱江 《现代图书情报技术》1996,12(4):3-6
Internet上常用的汉字编码有 GB、HZ、Big5三种。微机仿真终端利用 HZ码和 ZWDOS可直接传送中文电子邮件、参加中文新闻组的讨论、浏览 Gopher服务器和 WWW服务器上的中文信息。GB码的汉字文件和其他二进制文件经过编码后亦可通过 E- mail传送。这三种汉字编码可互相转换 ,相应的软件可利用匿名FTP从 Internet上获取。 相似文献
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Samir N. Hamade 《International Information and Library Review》2013,45(3):139-150
AbstractThis paper attempts to shed some light on the scientific communication behavior of Arab authors in library and information science by studying the characteristics of the literature used by these authors. A bibliometric study by way of citation analysis was conducted on the articles published from 1978 to 1988 in Maktabat Al-Idarah, an elite Arab scholarly journal in the field. It was concluded from this study that English literature is the main source of information for Arab authors in library and information science. They rely on English literature that is between 5 and 15 years of age more than on their own literature and use books more than any other form of publication. They cover almost all areas of the field with special emphasis on technical services as represented by cataloging, classification and aquisition, library administration and library education. Local materials published in their own country were also important. 相似文献
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目的：通过分析1994—2010年CMCC数据库儿童健康教育论文,了解我国卫生领域儿童健康教育科研状况,探索儿童健康教育的新方法。方法：利用数据库组配功能和附加限定功能、Excel软件、人工阅读等对儿童健康教育论文数量、作者分布、关键词及基金、期刊等分布情况进行文献计量分析。结果：CMCC数据库收录儿童健康教育论文1015篇,作者合著率65．62％,合作度2．66,广东省的作者发表的论文最多,关键词词频最高的病种是哮喘,涉及各类基金47项,《中国健康教育》杂志发表相关论文最多。结论：儿童健康教育论文数总体呈上升趋势,但研究有待加强。研究内容集中在疾病防治和儿童保健方面,医疗保健机构是儿童健康教育的核心部门,希望今后能在教育方法上有所创新。 相似文献
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在传统文献学理论影响下,少数民族文献资源建设存在着薄弱点。已往研究更多地是在探讨少数民族文献的收集、整理、数字化等方面的内容,而对少数民族文献范围的认识过于狭隘,对其社会发展意义强调不够。文章提出少数民族文献资源建设的工程性建议,即建立少数民族纸质文献中心、少数民族数字文献中心,建设少数民族实物资料数据库。参考文献36。 相似文献
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对39所"985"工程高校图书馆的外刊采购模式进行调查后发现,目前招标采购逐渐成为外刊采购的主流模式。招标模式使得图书馆、高校管理部门和供应商各方都能享受市场竞争带来的好处,但应用到外文期刊采购时也表现出一些局限性。对此,一方面要在招标频率、标段划分方式、评标方法等方面科学设置招标细则,避免不规范招标带来的缺陷;另一方面还应正确处理招标采购和自主谈判采购的关系,力图创造更优采购模式。 相似文献