专利分析及其在情报研究中的应用   总被引：7，自引：0，他引：7  

赵亚娟  董瑜  朱相丽 《图书情报工作》2006,50(5):19-22

在介绍专利文献的基础上,探讨专利分析方法,即专利分析可以分为定性分析和定量分析,定量分析是对专利相关指标的计算与统计;定性分析是对专利信息的一种技术分析,具有很强的专业性。并从情报研究的实践出发,以储氢领域为例,从专利数量随时间的变化趋势、专利技术布局、申请人、发明人等角度进行分析。  相似文献   

DVD与数字图书馆的信息存储     

刘家真 《图书馆论坛》2000,20(6):35-37

针对数字图书馆对信息存储与存取的要求,对ＤＶＤ与ＣＤ进行了分析对比,并论述了ＤＶＤ作为数字图书馆存储器的可行性。  相似文献   

Retrieving Information from a Distributed Heterogeneous Document Collection     

Christoph Baumgarten 《Information Retrieval》2000,3(3):253-271

This paper describes a probabilistic model for optimum information retrieval in a distributed heterogeneous environment.The model assumes the collection of documents offered by the environment to be partitioned into subcollections. Documents as well as subcollections have to be indexed, where indexing methods using different indexing vocabularies can be employed. A query provided by a user is answered in terms of a ranked list of documents. The model determines a procedure for ranking the documents that stems from the Probability Ranking Principle: For each subcollection, the subcollection's documents are ranked; the resulting ranked lists are combined into a final ranked list of documents, where the ordering is determined by the documents' probabilities of being relevant with respect to the user's query. Various probabilistic ranking methods may be involved in the distributed ranking process. A criterion for effectively limiting the ranking process to a subset of subcollections extends the model.The property that different ranking methods and indexing vocabularies can be used is important when the subcollections are heterogeneous with respect to their content.The model's applicability is experimentally confirmed. When exploiting the degrees of freedom provided by the model, experiments showed evidence that the model even outperforms comparable models for the non-distributed case with respect to retrieval effectiveness.  相似文献   

NAS与SAN在数字图书馆中的应用分析   总被引：10，自引：0，他引：10  

刘波 《现代图书情报技术》2004,20(6):92-94

针对数字图书馆电子信息资源激增的状况, 各高校图书馆都面临存储设备严重不足的问题, 对目前最流行的网络存储系统——附网存储系统(NAS) 和存储局域网(SAN ) 进行了分析与比较, 并结合我馆使用 NAS 的实践和经验, 得出NAS 比较适合于中小型图书馆, 而SAN 更适合于大型图书馆的数字图书馆建设。  相似文献   

Cognitive Tools in a Clinical Encounter in Medicine: Supporting Empathy and Expertise in Distributed Systems   总被引：2，自引：0，他引：2  

Robert B. Lebeau 《Educational Psychology Review》1998,10(1):3-24

This paper examines how, in use, culturally-provided tools can be said to embody knowledge and distribute thinking. It focuses on the routine procedures used by medical professionals to investigate patient complaints and examines explicit and implicit contributions of these conventional procedures to distributed thinking in clinical encounters in medicine. After characterizing these tools, examples of how the tools guide and constrain medical problem solving are provided. The tools support the development and exercise of the routines characteristic of medical expertise, while at the same time preserving the nonroutine, controlled deliberation necessary for sound and ethical medical care. The paper concludes with ways in which the tools' role in thinking can be promoted through medical education, particularly during students' early clinical exposure: (a) Organizing learning experiences that expose the tools' meanings; (b) exploiting the benefits of small group work to promote collaborative and individual competencies in distributed systems; and (c) explicitly utilizing the products of thinking with these tools to further the goals shared by participants in clinical encounters.  相似文献   

The Distribution of Distributed Cognition: Multiple Interpretations and Uses   总被引：3，自引：0，他引：3  

Joyce L. Moore  Thomas R. Rocklin 《Educational Psychology Review》1998,10(1):97-113

We argue that greater precision is needed in the use of the term distributed cognition if this perspective is to significantly impact educational research. We describe a continuum of interpretations of distributed cognition ranging from a conceptualization of cognition as an individual phenomenon that is influenced by factors external to the individual, to a conceptualization of cognition as a social phenomenon that cannot be reduced to individual psychological constructs. We discuss the issues raised by the papers in the current volume, and locate the perspectives taken in these papers along the distributed cognition continuum. The relationship between distributed cognition and situated cognition is then examined, as these terms are often used interchangeably. Finally, we discuss key issues for further research in distributed cognition.  相似文献   

Individual and Distributed Cognitions in Interdisciplinary Teamwork: A Developing Case Study and Emerging Theory   总被引：4，自引：0，他引：4  

Sharon J. Derry  Lori Adams DuRussel  Angela M. O'Donnell 《Educational Psychology Review》1998,10(1):25-56

We present a developing distributed cognition theory of interdisciplinary collaboration that incorporates concepts from both situated cognition and information-processing theory. This theoretical framework is being refined as it is used for analyzing interdisciplinary collaboration within the National Institute for Science Education (NISE). Our analyses are intended to improve scientific understanding of collaborative processes that influence productivity and quality of interdisciplinary work within the NISE and beyond. A critical group meeting in the early development of one interdisciplinary working team is analyzed using language and ideas from our theoretical perspective.  相似文献   

能源互联网背景下中国光储价值链效益协同模型研究     

刘吉成  卢运媛  李颖欢 《科技管理研究》2021,41(9):161-173

基于能源互联网背景建立光伏发电商与储能商组成的光储价值链,并以其为研究对象进行效益协同模型研究.首先根据改进的逐对比较法确定节点努力因素,其次分别构建分散价值链Stackelberg博弈模型、集成价值链模型,再次引入收益分享与努力成本共担联合契约及回购与努力成本共担联合契,最后通过数值分析进一步验证上述模型的有效性.结果 表明,集成价值链模型表现优于分散价值链模型,而在分散价值链中引入两种契约后能在保证节点利益的基础上实现价值链整体利益最大化,有利于光储价值链的效益协同.  相似文献   

基于多Agent的分布式个性化检索系统模型研究     

宋明慧  曹亚新  黄金明 《情报科学》2010,(4)

针对现有检索系统存在的问题,对个性化检索技术进行了深入的研究,提出了一种基于多Agent的分布式个性化检索系统模型(MADSS)。系统以用户个性化模型为中心,分别对用户的请求、检索结果和用户行为三个方面进行个性化处理,使信息检索的效果有了明显提高;结合分布式的多Agent技术、相关反馈数据融合技术和Personalized PageRank排序算法,能有效地解决系统在交互方式、自适应用户兴趣和信息源变化、高效并行检索等方面的不足,具有很好的理论价值和应用价值。  相似文献   

数字图书馆中数据存储结构转换为XML的解决方案     

周艳 《现代情报》2010,30(10):81-85

本文分析了数字图书馆中数据存储结构的形式,对数字图书馆中元数据用XML语言描述进行了探讨,设计并实现了一个基于.NET技术实现数字图书馆中数据存储结构转化为XML的解决方案。  相似文献