共查询到20条相似文献，搜索用时 31 毫秒
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[目的/意义] 对科学共同体中权威学者的地位与作用开展研究,以合著网络结构分析为视角,将网络分析与高h指数学者的作用研究相结合,从作者节点所处的网络结构与位置中探寻学者的影响力与作用发挥,为科学共同体的实证性研究开辟新的途径。[方法/过程] 以我国图书情报学科为例,选取33位高h指数学者作为研究对象,采集发文数据,提取合著关系,通过构建合著关系网络,采用网络分析技术对节点的中心性、聚集性、结构洞特征等进行分析。[结果/结论] 数据分析表明:绝大部分高h指数学者在网络结构中占据核心位置,学者之间联系紧密,在科学共同体中起到引领学科发展方向、建立和维护学科规范、加强科学交流与知识传播以及培育人才等重要作用。 相似文献
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The mission of the ACOG IAIMS project is to identify the core of knowledge necessary for the practice of obstetrics and gynecology, structure it and put it in electronic form, integrate it into a national ob-gyn information network, prepare ACOG members to use it, and disseminate this core of knowledge to members in appropriate forms. This mission will be accomplished through four project objectives: educational programs on computers and information use; definition of a prototype ob-gyn knowledge base; automated access to ACOG and NAACOG membership services; and integration of ACOG IAIMS activities with other organizations. The ACOG IAIMS model phase project is a model for the role of a national specialty society in meeting the information needs of its members and for the integration of national specialty IAIMS programs with locally-developed programs. 相似文献
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[目的/意义]探讨知识贡献活动的制约因素及其作用机制,为专业虚拟社区的未来发展任务提供实证支撑。[方法/过程]通过扎根理论的部分程序抽取开放式访谈得到的制约因素,借助解释结构模型和行动者网络理论分析制约因素的作用机制。[结果/结论]18个知识贡献活动的制约因素整体上形成了一个复杂的由多级层序结构组成的动态行动者网络,涉及用户心理和状态、用户体验、系统功能与设计、信息质量以及运营机制五类行动者。专业虚拟社区需要把握未来发展任务的轻重缓解,首先解决信息质量和运营机制等关键问题。 相似文献
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信息资源与能源、材料并列为当今世界三大资源,信息资源产业的发展也必将成为推动我国社会生产和国民经济发展的重要力量。随着网络化的发展,信息资源将进一步深入到生产生活的各方面。纵观我国这几年来信息资源产业的发展,虽取得了显著的成绩,但在网络基础设施运营、知识产权保护、网络信息安全及行业技术标准统一等方面都存在不少问题。针对上述发展现状,提出合理有效的对策措施,以规范健全我国信息资源产业,保证其健康、稳定、高速发展。 相似文献
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信息抽取技术在情报监测中的应用 总被引：3，自引：0，他引：3
信息抽取 (InformationExtraction)是一门应用性的语言处理技术 ,近年来正受到越来越多的重视。我们选取了国防情报工作这个特殊的领域 ,应用信息抽取技术进行探索性的研究。我们的方法是针对国防情报 ,应用世界最通用的语言—英文 ,设计了一个信息抽取系统 ,对各国国防经费信息进行动态的监测。该方法可望提高信息获取的效率 ,也将会扩展到更多的领域 相似文献
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AIMS AND OBJECTIVES: Access to health information is important for the well-being of people living in the community after spinal cord injury (SCI). In order to design appropriate information interventions, it is critical first to understand the information sources typically used. The goal of this study therefore is to identify the information-seeking practices of this group. SAMPLE AND METHODS: A sample of 207 individuals living in the community following traumatic spinal cord injury were surveyed regarding their ongoing information needs and practices for seeking information. RESULTS: The results reveal that respondents have unmet information needs, despite the fact that they typically access information through a variety of channels. SCI specialists are the most commonly used source, although they are viewed as relatively inaccessible. By contrast, the Internet (used by a relatively high proportion of respondents) is viewed as comparatively accessible, although there are some concerns about the quality of information found there. CONCLUSIONS: These survey results point to the need for an information source that is accessible and delivers high quality information. Although respondents use a variety of information sources, none meets this ideal profile. Information professionals should consider this gap in the design of information interventions. 相似文献
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This article will provide a brief overview of the primary computer network structures serving the U.S. academic research community. Plans for transforming the Internet into a National Research and Education Network are moving forward under the leadership of the National Science Foundation and the Federal Research Internet Coordinating Committee. The article outlines the scope of computational and information resources likely to be available to users through the national network, and highlights the role envisioned for the network in facilitating effective remote interaction by researchers with colleagues, scientific instruments, and data. When fully implemented, the national network can serve both as a powerful utility that extends the capabilities of scholars, scientists, and engineers, and as a testbed for an electronic information infrastructure available to every home, office and factory in the United States in the 21st century. 相似文献
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基于国家顶级域名分析的普适计算技术关注焦点分析 总被引：1，自引：0，他引：1
网络技术及其所产生的海量数据的迅速发展,网络信息已经成为社会不可忽视的重要信息资源,其中不仅蕴含着大量与技术相关的信息,而且潜移默化的引导和影响技术的发展.根据此领域目前的研究现状,本文在分析了现有的客观分析方法的基础上提出了采用网络信息中的国家域名分析技术发展方向的思路,即把若干个国家分组,对关于技术网页统计数量相似性较大的国家分为一组,利用层级聚类分析,通过组内和组间的比较得到目前各国普遍关注的技术焦点和技术未来的发展方向,并以普适计算技术为例进行实证分析. 相似文献
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Community structure research investigates the influence of the local community and specific demographic groups in the community on the degree of emphasis that particular public issues receive in a local newspaper. In contrast to this internal source of influence, intermedia agenda setting emphasizes the external influence of other news media and the national journalistic culture on the news decisions of local daily newspapers. To invoke a cliché, the agenda-setting and community structure perspectives are opposite sides of the same coin and should be considered in tandem. The research design and procedure for statistical analysis presented here, which involves the simultaneous investigation of the influence resulting from community structure and intermedia agenda setting, is a path for new research that can present a detailed explication of the balance between local and national influence on the issue agenda of local daily newspapers. 相似文献
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《Journal of Informetrics》2022,16(1):101226
This paper explores intellectual and social proximity among scholarly journals by using network fusion techniques. Similarities among journals are initially represented by means of a three-layer network based on co-citations, common authors and common editors. The information contained in the three layers is then combined by building a fused similarity network. The fusion consists in an unsupervised process that exploits the structural properties of the layers. Subsequently, partial distance correlations are adopted for measuring the contribution of each layer to the structure of the fused network. Finally, the community morphology of the fused network is explored by using modularity. In the three fields considered (i.e. economics, information and library sciences and statistics) the major contribution to the structure of the fused network arises from editors. This result suggests that the role of editors as gatekeepers of journals is the most relevant in defining the boundaries of scholarly communities. In information and library sciences and statistics, the clusters of journals reflect sub-field specializations. In economics, clusters of journals appear to be better interpreted in terms of alternative methodological approaches. 相似文献
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[目的/意义]虚拟求职社区已成为求职者获取与分享信息与资源的重要渠道。通过挖掘虚拟求职社区的用户交互模式及结构,为社区的完善提出相应建议。[方法/过程]利用应届生求职论坛的用户交互数据,结合应用内容分析与社会网络分析方法,从用户交互内容及交互关系两个维度展开分析。[结果/结论]研究发现,用户交互最多的是求职相关事实数据,但用户也寻求社交网络、推荐及工具性支持等社会支持;不同求职主题的交互需求有较大差异,用户最为关注的是笔试/面试主题的各方面信息与资源。同时,用户整体处于离散状态,交流较少;主要关系网络由少数关键成员支撑,缺少足够的核心用户推动信息与资源的传播。 相似文献
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网络社群在危机信息传播中发挥着越来越突出的平台与渠道作用,危机事件被迅速和广泛地传播,影响被成倍放大.影响网络社群危机信息传播的因素很多：危机事件类型及其与人们切身利益的相关度、危机信息的不确定性、网络社群的人群结构及信息结构特征、网络社群群体的行为及认知等.分析识别这些影响因素,可为危机信息决策者制定危机信息传播的应对决策提供科学指导. 相似文献
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根据美国图书馆协会(ALA)下属的参考与服务协会(RUSA)的机器辅助参考部(MARS)近五年来最佳免费参考网站的评选结果,择优选择介绍其中部分与我国图书馆的信息检索工作联系密切,对网络信息检索教学工作有实用意义的网站,以期为广大读者和网络用户提供更广泛开放的信息来源,并对国内的参考咨询服务活动有所启发。 相似文献
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[目的/意义]学术组织是研究人员获取信息资源的重要渠道,考察学术组织社群网络信息交流的特征,有利于更好地发挥组织虚拟社区信息传播的作用,为促进信息共享和知识创造服务。[方法/过程]选择互联网研究者协会为研究对象,以该协会2001-2016年的邮件组存档为数据源,采用社会网络分析方法,分析社群交流网络的主要指标并可视化展示整体网络结构。[结果/结论]研究发现,学术组织社群的网络信息活动具有长尾分布特征,形成多层次的核心-边缘等级结构,随时间推移网络中的凝聚子群结构由密集趋于松散化,反映出从快速发展时期、稳定期到衰退期的历程。指出学术组织需要加强信息建设职责,确保核心成员对虚拟社区的持续关注和治理,营造良性互动的信息生态系统。 相似文献
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《Library & information science research》2022,44(3):101176
Information behavior scholars are increasingly exploring information creation; however, these studies focus primarily on individuals' processes. The Melbourne Korean War Memorial (MKWM) used an interdisciplinary co-creation process, combining expertise in architecture, industrial design, engineering, and history. Over a two-year period, the MKWM research/design team worked with government officials and community members, from ideation and prototype design, through construction and installation of the completed memorial. The finished product informs the viewer about historic events, while also meeting architectural and design best practices. The co-authors' analysis of the information co-creation process constructs a new model of an informing aesthetic, where the memorial design embeds three types of information: explicit (e.g., photographs); implicit (e.g., national flowers); and embodied (e.g., pathway elevation). By combining research expertise with community feedback, while meeting technical and government design needs, the memorial informs about the war through a combination of statistics, storytelling, and visual knowledge representations. 相似文献
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运用社会资本理论从结构、关系、认知三个维度分析网络社区中影响成员知识共享的主要因素。从信息技术的推进、学习动机的生成、激励机制的完善和协作文化的培养四个方面阐述促进网络社区群体成员知识共享的策略。 相似文献
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As a part of the National Digital Information Infrastructure and Preservation Program (NDIIPP), the Library of Congress (LC), partnering with the Center for Technology in Government (CTG), launched an effort in 2005 to integrate state governmental entities into the national network to preserve born-digital information that is both significant and at risk of loss. The main theme that emerged from the efforts of LC, CTG, and the state and federal digital preservation community was the importance of partnership efforts and collaborative strategies for the preservation of state government digital information. Based on the findings of the initiative, this paper discusses challenges and opportunities regarding interorganizational collaboration and community building for digital preservation of state government information. Following the community of practice framework, it is recommended that a “state government digital information preservation community” be developed to facilitate collaboration across agencies and knowledge professionals in state governments. 相似文献
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文章根据国家创新发展与信息资源配置的互动关系,应用创新系统理论和协同学理论设计了国家信息资源协同配置体系框架,从网络基础设施建设、标准规范制定、信息资源建设和协同配置实施四个方面探讨了协同配置体系建设的技术路线.基于影响信息资源协同配置的关键因素,从协同管理、主体合作和利益协调三个方面研究了协同配置体系的运作机制. 相似文献
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This paper provides an overview of the practice of librarianship at the sub-regional level in West Africa. Functions of national libraries that are widely known are examined. The case is made for the implementation of the proposed Federation of West African Library Association (FWALA). A proposal is also made for the establishment of a sub-regional library and a network of the national libraries of the member countries of ECOWAS at a secondary level. The roles that various arms of the proposed structure can play to promote free flow of information in the sub-region are then discussed. 相似文献