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[目的/意义]旨在揭示国外用户健康信息搜索行为的内容、特点及趋势,以期为我国用户健康信息搜索行为领域的研究提供借鉴和参考.[方法/过程]以Web of Science为数据源,对86篇文献采用综合、归纳、对比等方法进行综合分析,从相关概念、研究对象、研究方法等方面对知识脉络研究进行梳理,按老年人、成年人、青年人分别对健... 相似文献
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[目的/意义]旨在梳理我国用户搜索行为研究状况,把握信息搜索行为研究进展,以期为用户信息搜索行为后续研究提供借鉴和参考。[方法/过程]以中国知网数据库中用户信息搜索行为相关文献为数据样本,以知识图谱绘制软件CiteSpace为研究手段,对我国用户信息搜索行为的演进过程、作者、关键词等进行聚类分析,揭示信息搜索行为研究热点、研究前沿及演化规律。[结果/结论]研究对象已经呈现多元化趋势;研究内容上,学者们在已有图书情报理论与模型基础上,不断拓展研究的视角和手段,来丰富和完善信息搜索行为的研究内容;理论方法由单一研究方法逐渐向多种方法的结合应用。 相似文献
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[目的/意义]健康信息搜索对改善人们的健康水平具有重要作用。近年来由非医学专业人士辅助他人搜索健康信息的现象受到了学者的关注,对这一现象的研究将有助于弥合数字不平等对人们健康信息获取造成的差异。[方法/过程]以国外已有的相关研究成果为基础,梳理健康信息替代搜索的概念内涵和理论基础,并从现有文献的研究方法、影响因素和行为特征三个方面对健康信息替代搜索的知识体系进行分析,最后从理论研究和实践探索两个维度进行前沿展望。[结果/结论]研究发现,国外现有的健康信息替代搜索大多局限于现象层面的分析,对主体参与动机、信息交换过程和效果机制的研究都不够深入,我国图书情报领域的学者在这一研究方向上有进一步探索的空间。 相似文献
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【目的/意义】社会资本理论是一个颇具国际性的学术研究热点，特别适合解释诸多用户信息行为，围绕社 会资本理论在国外用户信息行为领域的应用研究情况，对其研究进展进行述评，以期将国内研究引向深入。【方法/ 过程】采用文献调研法，对国外文献进行系统脉络梳理和整体内容述评。【结果/结论】社会资本理论在国外信息系 统用户行为领域的应用主要集中在“信息技术与信息系统的使用研究”、“在线参与研究”、“知识的贡献或共享研 究”和“表现绩效研究”四个方面。现有研究存在“替代性测度指标使用的信度和效度差异较大”、“个体层面和群体 层面研究的界定较为模糊”、“较少考虑社会资本的多种关系作用”的问题。同时指出了未来研究值得注意关注的 研究方向。 相似文献
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[目的/意义]在国内缺乏统一的信息素养标准的情况下,对国外的信息素养标准进行综合研究,可以为今后我国的信息素养标准制定提供参考,同时为文检课教学实践提供指导。[方法/过程]不仅从结构上对国外信息素养标准进行分析,更为重要的是分五个方面在内容上对国外信息素养标准进行综合研究,将重复内容进行合并和概括,然后将不同的内容归类整理,并按照逻辑进行陈述。[结果/结论]不同的标准在内容上各有侧重点,ACRL于2016年1月11日批准的《高等教育信息素养框架》以信息创造为核心,更适合作为研究生的信息素养标准。综合各种不同版本的信息素养标准,从5个方面概括的关于信息素养的要点可以作为文献信息检索课程的参考性指南。 相似文献
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[研究目的]从信息行为的角度,调查国外开放政府数据使用的相关文献,为我国相关研究提供参考。[研究方法]利用文献计量与内容分析的研究方法,从研究主题、理论基础、影响因素、调查对象等方面对国外开放政府数据用户使用研究现状进行剖析。[研究结论]后续研究需要对所构建的理论模型进行验证,而且中国情境下基于全过程的开放政府数据信息行为将会成为研究者关注的重点,可以在研究情境、研究视角、研究方法、研究对象选取方面可以进一步探索,针对不同领域的用户开展研究。 相似文献
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【目的/意义】从施引文献出发,对国外从众行为研究进展进行探索,展现和揭示从众行为研究的应用现状和
发展动态。【方法/过程】首先,以提出从众行为理论的论文为种子论文,将SSCI/SCI数据库中引用了该论文的文献
为研究对象。其次,利用关键词词频统计分析方法分析和统计有效数据,展现从众行为理论应用研究的重点和热
点。最后,利用文献研究法,结合施引文献的具体内容,对从众行为理论应用研究进行述评。【结果/结论】研究结果
发现,目前国外从众行为研究进展主要体现在以下四个方面：从众行为相似概念辨析、从众行为产生机制研究、从
众行为理论模型研究、不同情境下的从众行为影响研究。【创新/局限】从施引文献视角出发定量分析国外从众行为
研究现状,可以为从众行为研究综述提供一个新的研究视角,推动从众行为理论在图书情报领域研究中得到更好
的应用。 相似文献
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【目的/意义】立足于图书情报学,对我国研究生群体学术信息查寻行为相关文献进行梳理分析,旨在为该领域未来研究提供借鉴。【方法/过程】通过对研究机构、论文数量年份分布、期刊分布、主题词进行可视化分析,并对研究内容和研究方法进行梳理,从而掌握该领域研究现状。【结果/结论】基于相关文献,发现当前关于研究生群体学术信息查寻行为的研究集中于行为特点、影响因素、模型构建三个方面。理清各主题内部划分,阐释重要概念,把握研究重点,分析现有研究成果和存在的不足,为研究生群体学术信息行为领域未来发展提供建议。【创新/局限】探讨研究生群体学术信息查寻行为研究的新视点,提出在该领域研究中考虑学科交叉因素以及应用大数据分析方法,促进该领域研究进一步发展。 相似文献
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[目的]不同于官方信息传播相对理性，用户在社会化媒体上信息传播具有较强的情绪化特征。情绪化信息传播具有独特的传播机制和影响力，国内外文献已经开始对此进行关注并成为社会化媒体信息传播研究的重点之一。[方法]以社会化媒体和情绪等关键词组合在国内外文献资料库内进行搜索，对搜集的相关文献进行梳理。[结论]从社会化媒体情绪化信息特征、情感分析、情绪化传播行为及情绪化信息的影响四个方面述评现有成果，最后分析了现有研究不足并指出未来可能的研究方向。 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
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Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献