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1.
引用认同和引证图像研究   总被引：1，自引：0，他引：1  
本文通过介绍引用认同和引证图像的概念,探讨引用认同和引证图像的关系,研究作者的研究领域、学术活动过程、学术社会网络关系以及对其他作者产生的影响。然后以国内3位情报学领域专家为例进行实证分析,旨在为客观全面评价某位作者及其作品提供理论依据。
Abstract：
By introducing the concepts of citation identity and citation image,this paper discusses the relationships between them,and studies the author＇s research field,process of academic activities,academic and social relations,and impact on the other authors. The paper then makes an empirical analysis of 3 experts in the field of information science in China,the purpose of which is to provide the theoretical basis for evaluating an author and his works objectively and comprehensively.  相似文献   

2.
以影响因子为核心的期刊评价指标近年来受到很大的争议,越来越多的学者正不断探索新的期刊评价指标体系。本文以Bonnevie-Nebelong所构建的期刊引用认同评价指标体系为依据,选用《情报理论与实践》为评价对象,分析了该期刊的引用率、自引率、自被引率、新期刊扩散因子等指标,通过与国内外相关图书情报学刊物的对比和相关指标的相关性分析,验证了期刊引用认同评价指标的有效性。
Abstract：
Journal evaluation indices with impact factors as the core have aroused great controversy in recent years. More and more scholars are constantly exploring new journal evaluation index systems. Based on the Journal Citation Identity Evaluation Index System constructed by Bonnevie-Nebelong,and taking Information Studies： Theory Application as the object of evaluation,this paper analyzes the citation ratio,self-citing ratio,self-cited ratio and new journal diffusion factor of the journal. By comparing with related LIS journals at home and abroad,and based on the relativity analysis of the related indices,the paper demonstrates the effectiveness of journal citation identity evaluation indices.  相似文献   

3.
社会网络分析法可以分为不同的分析层次。本文首先论述三方关系组方法的原理,并将其应用到引用网络结构的研究中,分析各种三方关系类型在引用网络中的具体意义。以SSCI收录的18种图书情报学期刊近10年的文章为数据源,运用三方关系组揭示了图书情报领域高产作者引用网络的内部结构,通过计算不同类型聚类系数研究了网络整体结构倾向。
Abstract：
Methods of social network analysis can be divided into different levels.This article first describes the principle of the triad census method,applies it in the research on the structure of citation network,and analyzes the specific significance of various triad census types in citation network.Taking the papers published by the 18 types of journals of library and information science in recent 10 years and included by SSCI as data sources,the article uses the triad census to reveal the internal structure of the citation network of the high-yield authors in the library and information science field,and by calculating the different types of clustering coefficients,studies the trend of the whole network structure.  相似文献   

4.
高校信息素质教育的分析与实证研究   总被引：6，自引：0，他引：6  
探讨高校信息素质教育的内涵,并通过分析得出影响高校信息素质教育的两大因素：学习动力和教学环境。以我国普通高校为实证研究对象,通过问卷调查和网上调查所得数据,分析我国高校信息素质教育建设现状,在此基础上提出高校信息素质教育面临的一些问题和解决的办法。
Abstract：
The connotation of university information literacy education is discussed.Through analysis,two major factors affecting the university information literacy education are educed：learning motivation and teaching environment.Taking the regular universities in China as the object of empirical study,this paper analyzes the current situation of university information literacy education in China based on the data obtained through questionnaire survey and online survey.On this basis,the paper points out some problems confronted by university information literacy education in China and provides some solutions.  相似文献   

5.
知识图谱在揭示学科研究现状,识别学科研究前沿方面有着相当重要的作用。本文以制浆造纸领域为例,利用作者共被引分析方法,采取多元分析与社会网络分析相结合的技术,运用SPSS和Uci-net软件,绘制相关知识领域的可视化图谱,直观形象地展示了我国制浆造纸领域的研究现状,验证基于作者共被引分析方法的知识图谱在学科研究方面的有效性和可靠性。
Abstract：
Mapping knowledge domain plays an important role in revealing the status quo of disciplinary study and identifying its leading edge. Taking the pulp and paper manufacturing domain for example,and by the use of the author co-citation analysis method,this paper combines the technologies of multivariate analysis and social network analysis to draw the visible maps of the related knowledge domain by using the SPSS and Ucinet software,which displays the status quo of research in the pulp and paper manufacturing domain in China intuitively and figuratively. The validity and reliability of mapping knowledge domain in disciplinary study based on the author co-citation analysis method are verified.  相似文献   

6.
引文分析数据广泛应用于科学评价,使科技论文引文计量的缺陷开始逐渐显露出来。本文对引文计量的特点及其自身存在的不确定性进行了分析和阐述,并针对其不确定性及目前滥用引文计量的混乱,提出了对引文计量范围、计量方法及评价机构、评价系统的规范管理的建议。
Abstract：
Citation analysis data is widely used in scientific evaluation,which makes the deficiencies of citation calculation of scientific papers begin to emerge.In this paper,the characteristics of citation calculation and its existing uncertainty is expounded.In view of its uncertainty and the current confusion over the abuse of citation calculation,suggestions for standardized management of citation calculation range,calculation method,evaluation organization and evaluation system are proposed.  相似文献   

7.
技术采纳模型文献的计量分析   总被引：1，自引：0，他引：1  
技术采纳模型（TAM）是1989年美国学者Davis在理性行为理论（TRA）的基础上,提出的一个专门用于描述用户信息技术采纳和接受行为的模型。本文以CNKI数据库为原始文献来源,对技术采纳模型的相关文献分别从发表年份、刊登期刊、作者合作度、研究领域、研究层次、研究方法、采用变量等方面进行计量分析,为今后的研究和应用奠定基础和提供参考。
Abstract：
Technology Acceptance Model （TAM） is a model proposed by Davis,an American scholar,based on the Theory of Reasoned Action （TRA） in 1989.It’ s a model used specially to describe the information technology adoption and acceptance behavior of the users.Taking the CNKI database as the original literature sources,this paper makes a statistical analysis of the related literatures of TAM from the aspects of publication year,publication journal,author cooperative degree,research field,research level,research method,and variables adopted in an attempt to lay a foundation and provide reference for future research and application.  相似文献   

8.
Water is the foundation of an arid ecological system, as the quantity and quality of surface water and groundwater determine its structure and function. The study on the relationship between water and ecosystem is the basis of ecosystem protection. Taking the Ejina delta, an extremely arid area located downstream of the Heihe River in northwestern China, as an example, this article gives an overviewe of the study in three aspects: (1) the groundwater table and salinity dynamics and their driving factors, (2) the groundwater depth and salt threshold of natural vegetation ecosystem, and (3) the impact evaluation of ecological flow control on Ejina natural vegetation. The authors point out the importance of the research into the relation between water and ecosystem and its key difficulties and weakness, and put forward strategies for promoting the study processes.  相似文献   

9.
The glucocorticoid receptor （GR）, also known as NR3C1 （nuclear receptor subfamily 3, group C, member 1） is the receptor to which cortisol and other glucocorticoids bind. Many studies have also showed that it is the target protein for the well-known glucocorticoid class of anti-inflammatory drugs such as prednisone, dexamethasone （DEX） and budesonide, which have proven successful for the efficient treatment of inflammation and autoimmune diseases such as asthma,arthritis,lupus, and Crohn＇s disease.  相似文献   

10.
Fluid inclusion study has been carried out for the carbonatite dykes/veins and the ore-hosted dolostone of the Bayan Obo superlarge REE-Fe-Nb deposit in order to provide the evidence and constraint for their origin. Based on the detailed geological observation and mineralogical investigation, the heating and cooling stage and laser Raman spectroscopy were mainly used for the laboratory work of this study. Following results have been obtained： （ 1 ） The discovery of melt and melt-fluid inclusions from carbonatite dykes/veins in the Dulahara and Jianshan Mountains, combined with the fine-grained （aplitic） texture of rocks, as well as the types and features of fluid inclusions such as CO2 enrichment, higher homogenization temperature, provides a direct evidence for the magmatic origin of these dykes/veins. （2） The carbonatite dykes/veins distributed in two regions, nearby the axis of the Kuangou anticline and in the east to Bayan Obo town, mainly show coarse-grained texture. No melt inclusion was found, and the fluid inclusions possess features of less CO2, lower homogenization temperature and higher salinity. They are tentatively identified as veins formed by some carbonate-rich hydrothermal solution. （3） Bedding carbonate layers/lens within the hanging wall and foot wall of ore-hosted dolostone, previously recognized as of magmatic origin, mainly composed by dolomite. The existence of single phase pure aqueous inclusions with very low homogenization temperature indicates their sedimentary origin. （4） The ore-hosted dolostone possesses apparent bedding and laminated structures. No melt inclusion was found, but, both single phase pure aqueous inclusions and CO2 bearing muhi-phase fluid inclusions coexisted in dolostones. In the direction towards ore-bodies, the homogenization temperature and CO2 contents of fluid inclusion show an increasing tendency. It indicates the sedimentary origin of dolostone superimposed by late fluid metasomatism.  相似文献   

11.
知识管理研究现状的可视化分析   总被引：2，自引：0，他引：2  
本文以ISI Web of Knowledge收录的＂知识管理＂为主题的文献作为数据源,利用CiteSpaceII工具,对知识管理研究的现状进行可视化研究,分别分析知识管理研究的文献时间分布、地区分布、机构分布、涉及学科以及学科代表人物与其作品,从而直观地揭示知识管理研究发展的现状。
Abstract：
Taking the literatures with ＂knowledge management＂ as the theme and included by ISI Web of Knowledge as data sources,this paper makes a visible study of the status quo of research on knowledge management by the use of the CiteSpace II tool.The paper analyzes the time distribution,regional distribution and organizational distribution of literatures about knowledge management research as well as the subjects involved,the representative personnel of the subjects and their works separately,thereby revealing the status quo of research on knowledge management intuitively.  相似文献   

12.
用户标注行为反映了标注对象与标注结果之间的相关关系。本文通过对用户标注行为的分析,详细研究了用户标注行为所反映的网页间相关性、标签间相关性以及网页和标签间相关性的关联程度,并将这种相关性分析用于标签的相关性计算上,改进了SPR算法。结果表明该算法可以有效提高检索结果重排的效果。
Abstract：
User annotation behavior reflects the relationships between annotated objects and tags. Based on the analysis of the user annotation behavior,this paper makes a detailed study of the relativity between Web pages,the relativity between tags and the relationships between them reflected by the user annotation behavior. The paper applies the relativity analysis to the relativity computation of tags to improve SPR. The results show that the algorithm can improve the re-ranking effect of retrieval results effectively.  相似文献   

13.
Coronal mass ejections（CMEs） are a major form of solar activities.A CME takes away 1015-16 g of plasma from solar low corona,to disturb the near-Earth space if the CME direction is favorable.Here we summarize our understandings and reasoning that lead us to conclude that CMEs are the unavoidable products of magnetic helicity accumulation in the corona.Our study puts the formation of magnetic flux ropes and CME eruptions as natural and unavoidable results of coronal evolution.  相似文献   

14.
ABSTRACTS     
《科学技术与辩证法》2009,26(3):111-112
Analysis of Horgan＇ s Thoughts on Contextual Semantics and its Significance
GUO Gui - chun, LIU Wei - wei
Scientific semantics is a methodological instrument of language analysis, which has been continuously improved in his- tory,and the scientificity of semantics inherently requires the establishment of semantics＇ contextual basis. So in this sense, Horgan＇ s contextual semantics has achieved the change from parochial and microscopic semantic analysis to systematic and holistic semantic analysis. In the filed of contextual theory, meaning is essentially related to context. Instead of being directly equal with the certainty of truth it is characterized by dynamic and pragmatic features. Contextual semantics has already been extended and deepened in the exploration of language＇ s fuzziness. At the same time,  相似文献   

15.
张素敏 《科教文汇》2007,(7S):60-61
In theory, language teaclfing today should be entirely monohngual-using target language as the medium of instruction. However, teachers＇ code switching is common in EFL/ESL classroom which can be ＇evidenced along the entire continuum of proficiency＇ （Brice 2000）. This paper is devoted to exploring the theoretical justification for the existence ofcone switching and the pedagogical purposes for the use of it in EFL classroom, with a hope to raise EFT teachers＇ awareness of the actual use of code switching in classroom and help them develop an appropriate attitude towards its role in EFL teaching.  相似文献   

16.
结合军队新型装备采办人才队伍的建设问题,利用系统动力学方法对人才队伍的规模、组织机构等因素,进行了仿真分析和绩效评估。建立了绩效评估的指标体系,提出人才队伍进出的泊松分布模型,基于系统动力学模型对规模调整因子等变量进行了仿真分析。
Abstract：
As for the training of talented persons for the acquisition of new equipment in the army,this paper uses the system dynamics method for simulation analysis and performance evaluation of the size of talented persons,the organizational institutions and so on.The paper constructs the performance evaluation index system,brings forward the Poisson distribution model for the passing in and out of talented persons,and makes a simulation analysis of the variables such as the factor of size regulation based on the system dynamics model.  相似文献   

17.
针对我国公共图书馆信息服务的特点,对有代表性的3家公共图书馆的数字参考咨询系统进行了比较研究,主要从服务政策、服务模式、服务管理3个方面多角度进行了统计分析,进而提出了深化发展我国公共图书馆数字参考咨询服务的建议。
Abstract：
Based on the characteristics of information service in public libraries in China,this paper makes a comparative study of the digital reference systems of 3 typical public libraries.The paper makes a statistical analysis mainly from 3 aspects,that is,service policy,service mode and service management.Finally,the paper puts forward some suggestions for deepening the development of digital reference service in public libraries in China.  相似文献   

18.
DING Zhongli     
Prof. Ding, 51, is a Quatemary geologist. He graduated in 1982 from the Department of Geology, Zhejiang University, and obtained his Ph.D. degree from the CAS Institute of Geology （the predecessor of today＇s CAS Institute of Geology and Geophysics, IGGCAS） in 1988. Prof. Ding served as directorgeneral of IGGCAS from 2000 to 2007. He was elected as CAS Member in 2005 and Chairman of the Chinese National Committee for the International Geosphere-Biosphere Program （CNC-IGBP） in 2008.  相似文献   

19.
Among the galaxy of research and development organizations in northwest Beijing＇s Zhongguancun district, known as China＇s Silicon Valley, two are especially well-known to IT researchers： Microsoft Research Asia （MSRA）, and, within a few blocks on the other side of the street, the CAS Institute of Automation （CASIA）. While most people in Chinese scientific organizations strive to move to a large foreign counterpart, Dr. Stan Z. Li （LI Ziqing） moves against the stream.  相似文献   

20.
The opportunity to carry out experiments in the absence of gravity has always interested CAS scientists. Studies have been implemented via, for instance, Russian Mir Space Station and China＇s space flights ever since the establishment of the National Microgravity Laboratory （NML） at the CAS Institute of Mechanics （IMECI-I） in the late 1990s. In addition to the concern about the effects of the weightlessness on humans sent into space, they are also interested in its effects on the reproductive and developmental cycles of plants and animals as well as other physical and chemical phenomena.  相似文献   

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