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1.
文章针对Physical Review 于2000-2010年间刊载论文的科学文献数据进行分析,对论文的前沿术语、关键词、学术机构、被引作者、被引文献和被引期刊等实体绘制研究前沿及其知识基础的科学知识图谱,从定量和定性的角度揭示国际上理论物理研究领域的结构和动态,发现理论物理研究领域的重要文献、  相似文献   

2.
科学前沿迁移规律研究是科学计量学研究的热点主题,能够体现不同时期科学家关注点以及科学研究侧重点的动态变化。基于引文、主题词、网络和离群数据的科学前沿迁移研究方法和数据分析、引文分析、时序分析和网络分析四类科学前沿迁移研究工具,比较时间线可视化、科学地图可视化、Histcite引文编年可视化、知识领域可视化和VxInsight可视化技术,阐明科学前沿迁移研究的可视化、载体迁移、低频现现象等发展趋势。  相似文献   

3.
论文以中文社会科学引文索引(CSSCI)中以"知识组织"为研究主题的文献为研究对象,运用知识可视化图谱软件CiteSpaceⅡ对这些数据进行文献共引分析和热点分析,以知识图谱的方式展现了图书馆学情报学领域"知识组织"研究前沿的演进情况。  相似文献   

4.
本文基于术语共现理论,利用形式概念分析中概念格的自动生成来推理作为属性的领域专业术语的层次结构并进行可视化展示,进而提出了一整套用于实现领域本体概念层次关系构建的解决方案,具体包括文档/词汇与术语语义关联的识别、领域形式化背景的建立、基于形式概念分析的主题概念的生成、基于主题概念格的术语层次关系抽取、术语层次体系的OWL描述和图形展示等.笔者以“白血病”领域为例,详细论证了无知识库支持环境下中文文本到医学学科术语层次结构的衍化过程,并对以文档术语矩阵(DTM)和词汇术语矩阵(WTM)为形式化背景生成的术语层次体系进行了比较分析.  相似文献   

5.
科学知识图谱方法及其在科技情报中的应用   总被引:7,自引:0,他引:7  
进入新世纪以来,科学知识图谱与知识可视化得到迅速的发展,已成为科学计量学和情报计量学的主流领域。文章借助科学知识图谱的方式和实例,来展示和分析科学知识图谱的基本概念、发展历程、前沿领域、主要方法和类型,以及在科技情报领域中的广泛应用。从知识图谱研究文献的共引知识图谱,发现了知识图谱和知识地图的差异,知识图谱研究的前沿动向及其知识基础。从科技情报数据的共引知识图谱,展现了知识图谱方法在探测学科前沿、科学发现、科学合作和科技战略诸方面的引领作用。知识图谱不仅创新了分析科技情报的模式,而且改变了人们观察世界的方式。  相似文献   

6.
研究前沿是在一门学科领域中研究者最热衷、最新的研究主题.运用时间线和地形式可视化图谱方法进行研究前沿的确定和描绘,由原来的二维时间线图谱扩展至三维动态地形式图谱,为研究前沿的发展趋势绘制更加清晰可视化并具有动态性的知识图谱.以一份科学传播研究领域的权威期刊<科学传播>(Science Communication)杂志1994~2007年的数据为例,对科学传播的研究前沿进行了可视化地梳理和描述,绘制出时间线和地形式可视化图谱,试图随着时间变化来演示科学传播领域研究前沿的动态变化过程与发展趋势,为技术预测和学科发展提供借鉴.  相似文献   

7.
基于知识图谱的国际生物科学与工程前沿计量研究   总被引:2,自引:0,他引:2  
生物科学与工程技术是当代工程科技前沿研究中的学科领域之一,是21世纪引领生物技术产业迅速发展的学科基础.运用科学计量学最新方法和可视化技术,绘制出当代国际生物科学与工程技术前沿领域的知识图谱,形象地展示出国际生物科学与工程技术领域存在以"基因工程、蛋白质工程、酶工程"、"基因组学、蛋白质组学"与"细胞工程、组织工程"为内涵的三个主流知识群,揭示了三者的学科归属与相互关系,并阐述了生物科学与工程技术前沿的主流学术领域,基本上属于技术科学与工程科学的范畴,以及基于理论导向的应用技术研究,从而为我国跟踪和占领世界生物科学与工程技术前沿的制高点提供了可供决策参考的线索.  相似文献   

8.
本文首先对ISI Web of Science中的SCI、SSCI和CPCI-S三个引文数据库收录的国外专利情报相关研究论文数据进行时空维度的计量分析,再利用信息可视化分析软件CiteSpace绘制国家(或地区)共现、科学主题共现、文献共被引和共词网络知识图谱.从国外专利情报领域的科研合作、学科分布、知识基础、研究热点与前沿领域等进行分析,进而探索国外专利情报领域研究的演进规律、特点及发展趋势,为国内专利情报领域的科研规划与管理提供必要的参考.  相似文献   

9.
文章以从CSSCI下载的有关“数据挖掘在图书馆中的应用”的题录信息为研究对象,使用CiteSpace从机构、作者、共被引文献、关键词等角度分别绘制了相关聚类视图和共被引网络视图,以可视化图谱的形式来展示国内图书馆数据挖掘的知识谱系,分析机构群特征、作者群特征、知识基础、研究热点和趋势,以期对该领域研究达到全面、整体的认识与把握。  相似文献   

10.
文章首先辨析了数字资源保存的概念,介绍了数字资源保存的发展史和国内外研究现状。然后利用CitespaceⅡ可视化分析工具和方法构建领域知识基础(指引文)的时间序列演化图谱和时区演化图谱,并结合绘制的领域发展趋势图,分析了数字资源保存的研究进展。同时利用CitespaceⅡ可视化分析工具和方法绘制术语与关键词的混合共现网络和引文共被引聚类知识图谱,识别出数字资源保存的研究热点U,并利用爆发词或突变词探测方法探测数字资源保存的研究前沿。最后针对图书情报与档案管理学科关注最多的研究热点——数字资源长期保存,从研究主题、最佳实践、保存周期、保存技术和方法、保存策略等几个重要方面解读数字资源长期保存的研究进展。  相似文献   

11.
To obtain benefits in the provision of public services, managers of public organizations have considerably increased the adoption of artificial intelligence (AI) systems. However, research on AI is still scarce, and the advance of this technology in the public sector, as well as the applications and results of this strategy, need to be systematized. With this goal in mind, this paper examines research related to AI as applied to the public sector. A review of the literature covering articles available in five research databases was completed using the PRISMA protocol for literature reviews. The search process yielded 59 articles within the scope of the study out of a total of 1682 studies. Results show a growing trend of interest in AI in the public sector, with India and the US as the most active countries. General public service, economic affairs, and environmental protection are the functions of government with the most studies related to AI. The Artificial Neural Networks (ANN) technique is the most recurrent in the investigated studies and was pointed out as a technique that provides positive results in several areas of its application. A research framework for AI solutions for the public sector is presented, where it is demonstrated that policies and ethical implications of the use of AI permeate all layers of application of this technology and the solutions can generate value for functions of government. However, for this, a prior debate with society about the use of AI in the public sector is recommended.  相似文献   

12.
The purpose of this article is to study a broad set of journal papers related to metadata and quality in digital repositories and libraries, and to provide a quantitative analysis of the relevant research. It also aims at identifying open issues and future directions for research. A detailed search was carried out in relevant journals of information science, computer science, and library science; mainly, that allowed us to identify an extensive corpora of relevant work. The identified papers were classified based on an existing framework and a statistical analysis was carried out on the main classifications used within the framework. The analysis of the 702 papers identified, led to a series of statements for the field examined, focusing on the type of research carried out, the research methods deployed, and the research claims made. In addition, the papers were classified based on their target audiences, disciplines, as well as institutional and geographical origins. The article identifies areas in the literature that have not been addressed, as well as areas for future research. It also provides a clear image of the areas already researched, analyzing scientific literature that covers 20 years of repository/library deployment. This article makes an original contribution for researchers, practitioners, and managers of digital repositories and libraries alike as it provides a set of specific recommendations for the metadata and quality in digital repositories and libraries research agenda, along with a thorough analysis and classification of the research carried out so far.  相似文献   

13.
A review of the American Library Association's 1971 Guidelines For Using Volunteers in Libraries is given as background to a discussion of public library volunteers. Opposing and supporting viewpoints towards volunteer use as expressed in the library literature are presented. The nature of the literature is examined, with special emphasis afforded to the purpose, methodology, and conclusions of research studies. The author concludes that, while the literature on public library volunteers has increased in volume over the past decade, little useful research‐oriented reporting has been undertaken. The author suggests that the topic merits further investigation and research.  相似文献   

14.
The library profession is a strong and vocal proponent of increased information access for people with disabilities. With the discipline's longstanding interest in the subject of services to people with disabilities, questions arise about how the profession perceives the phenomenon. How is library and information science (LIS), as a discipline, conceptualizing disability and accessibility? A content analysis of the LIS literature was conducted to examine this question. The literature provides a fertile ground for study as it reflects the profession's approaches to, and perceptions of, a topic. This research identifies the major issues and trends in the research about accessibility and disability in the LIS literature throughout a 10-year period, 2000–2010. The strongest theme in the literature is accessibility as it relates to web, database, and software, while the prevailing disability of focus is visual disabilities. The overall environment emphasizes technology more than attitudinal aspects associated with disabilities. The research could benefit from increased direct participation of people with disabilities.  相似文献   

15.
This paper examines changing research practices in the digital environment. A review of the literature and our own field research in Australia suggest that there is a new mode of knowledge production emerging, changing research practices and bringing new information access and dissemination needs. Adjustments will be required to accommodate these changes, but new opportunities are emerging for more cost‐effective and sustainable information access and dissemination. It will be necessary, however, to take an holistic approach and treat the creation, production and distribution of scholarly information, the management of information rights and access, systems of review and evaluation and the underlying infrastructure as parts of a single research information and scholarly communication system.  相似文献   

16.
There is an extensive amount of Library and Information Science (LIS) writing produced each year. While there is general awareness regarding the variety of journal literature, there is no certainty on the percentage of the collection that we can call research. This project is an important first step in answering the question. A content analysis of the LIS academic/scholarly journals at the Simmons College Library was conducted. The research level collection of LIS literature makes the library an ideal candidate for this study. The latest issue of each journal subscribed to for fiscal year 2012–2013 containing academic/scholarly content was analyzed. Each article was analyzed to determine: 1) if it was research or non-research, 2) the method used to collect data for the study in the article, and 3) the subject terms or keywords associated with the article. 105 journal titles were identified out of 177 periodicals. In the 1880 articles analyzed from these, 16% qualified as research. Surveys were found to be the most popular research method used. This study will benefit students, faculty, and staff with research requirements as well as librarians who guide patrons through a search for research literature.  相似文献   

17.
It is common in the literature to see libraries characterized as public sphere institutions, but the exact processes by which libraries support and engage in the public sphere remain under-explored. Based on a systematic review of the research literature on libraries as public sphere institutions, this study maps the questions, methods, theories, and findings of those scholars and librarians who have examined this topic. This research finds that discussions of libraries as public sphere institutions orient around five themes: Community, management and funding, institutional structures and practices, new tools and services, and knowledge organization. Compared to existing research, more focused and stringent research designs are necessary to enhance the understanding of libraries as public sphere institutions. A focused research program can create theoretical and actionable knowledge for knowledge-based policies, strategies, and activities at the international, federal, state, and community levels.  相似文献   

18.
A diachronous time-series of bibliometric data (using all data available) suggests rising normalised citation impact (nci) for Germany and other G7 nations, while China suffers a decline in later years of any series. This is shown to be a consequence of the time-series, which has led to an erroneous interpretation of real trajectories. A synchronous series (using fixed time windows) based on the final year suggests a lower trajectory while a diachronous series tracking the fate of a single publication year reveals that nci progressively falls for Germany and the USA whereas it climbs for China. This has implications for research policy and for the interpretation of changes in the competitive research environment in the presence of dynamic growth. By analogy, this may extend to institutional as well as national comparisons. It has implications for analytical methodology, supporting prior suggestions that recent papers should be omitted from citation analysis.  相似文献   

19.
从1996年柯达发明基于CCD传感器的数字照相机以后,数字摄影已经进入人们的日常生活和工作领域;随着数字照相机销售价格的不断下降,使用数字照相机的人也变得越来越多,除上述专业领域外,模拟摄影逐步淡出市场。  相似文献   

20.
A survey and analysis of the use of ethnographic methods in studies of libraries and library users identified a total of 81 studies. Five main types of ethnographic research methods were identified: observation, interviews, fieldwork, focus groups, and cultural probes. The survey shows a recent increase in the use of ethnographic methods in libraries, and identifies an emerging genre of studies associated with library planning that uses rapid ethnographic methods to investigate libraries and their users as part of planning processes. The survey supports comparison across ethnographic studies, settings, and methods; enables the growth of ethnographic methods as a research method in libraries; and provides material for library and information science curriculum development in this area. A bibliography of the studies used in the analysis is provided in Appendix A, and includes a number of gray literature reports and online publications.  相似文献   

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