基于作者共被引分析方法的知识图谱实证研究——以国内制浆造纸领域为例   总被引：5，自引：0，他引：5  

邱均平  秦鹏飞 《情报理论与实践》2010,(10)

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   

Student satisfactions in four mixed courses in elementary teacher education program     

Qiuyun Lin   《The Internet and Higher Education》2008,11(1):53-59

Mixed or hybrid method has become an increasingly popular course delivery model in recent years, but research regarding the effect of mixed learning is limited because of its recent debut in the landscape of educational technology. This one-year exploratory study looked at 78 elementary teacher candidates' view of learning in four mixed courses that used Blackboard Learning Management System (LMS) to supplement as well as replace some portions of face-to-face instruction. Both quantitative and qualitative data were collected from surveys designed to measure students' satisfaction and perspectives of hybrid learning. Results suggested high level of satisfactions but also revealed several important issues and complexities involving hybrid course implementation.  相似文献   

简析布莱尔政府的选举制改革     

刘杰  冯婕 《辽宁教育行政学院学报》2008,25(7)

英国是世界上较早实行简单多数选举制的国家,但由于受其政治体制诸多方面的影响, 一直未能对其现行的选举制进行改革.布莱尔执政的十年间,对英国选举制进行了20世纪以来最重大的体制改革,改革的总趋势是把简单多数制与比例代表制结合起来,实行不同形式的混合代表制.改革将会对英国政治体制产生重大影响.  相似文献   

Co-citation and cluster analyses of extant literature on social networks     

《International Journal of Information Management》2017,37(5):390-399

Over one billion people are currently using social media such as social websites (Facebook Newsroom, 2015); consequently, numerous academic scholars have developed interest in studying the use of social media and social networks. However, few studies have focused on examining the core factors of social networks. In this study, we collected studies on social-network-related topics that were published between January 1996 and December 2014, assembling a total of 2565 articles and 81,316 citations. Co-citation analysis and cluster analysis were applied to verify seven main factors regarding social networks: (a) the measure of complex social networks; (b) community structure; (c) strong and weak ties; (d) the evolution of social networks; (e) network structure and relationship; (f) value concept and measurement strategies; and (g) social capital. Finally, the results of this study were further discussed to elucidate the core topics relevant to social networks.  相似文献   

基于信息可视化的国际图书馆服务领域前沿演进分析   总被引：2，自引：0，他引：2  

刘丽 《图书馆论坛》2012,32(3):6-12

以ISI Web of Science文献数据为样本,借助CiteSpaceⅡ软件,绘制国际图书馆服务研究的知识图谱,剖析支撑当前图书馆服务发展的关键学术文献,探讨图书馆服务研究的热点领域,直观形象地展示图书馆服务研究的前沿演进。  相似文献   

不同载体环境下学术期刊文献被引规律实证研究     

宋恩梅  左慧慧 《出版科学》2012,(4):87-94

以CNKI的中国引文数据库(CCD)为数据源,考察三个学科在不同载体环境下的文献被引情况,发现不论是纸质-网络混合载体环境还是纸质载体环境,文献的被引曲线变化趋势都较为相似,但混合载体环境下文献的被引程度明显大于纯纸质载体时期,而文献被引峰值的出现时间则稍晚于纯纸质载体时期.回归分析的结果表明不同载体环境、不同学科间文献被引的历时分布数据需要用不同的数学模型来描述.  相似文献   

Energy management strategy for a parallel hybrid electric vehicle equipped with a battery/ultra-capacitor hybrid energy storage system     

Jun-yi LIANG  Jian-long ZHANG  Xi ZHANG  Shi-fei YUAN  Cheng-liang YIN 《浙江大学学报(A卷英文版)》2013,14(8):535-553

To solve the low power density issue of hybrid electric vehicular batteries, a combination of batteries and ultra- capacitors （UCs） could be a solution. The high power density feature of UCs can improve the performance of battery/UC hybrid energy storage systems （HESSs）. This paper presents a parallel hybrid electric vehicle （HEV） equipped with an internal combus- tion engine and an HESS. An advanced energy management strategy （EMS）, mainly based on fuzzy logic, is proposed to improve the fuel economy of the HEV and the endurance of the HESS. The EMS is capable of determining the ideal distribution of output power among the internal combustion engine, battery, and UC according to the propelling power or regenerative braking power of the vehicle. To validate the effectiveness of the EMS, numerical simulation and experimental validations are carried out. The results indicate that EMS can effectively control the power sources to work within their respective efficient areas. The battery load can be mitigated and prolonged battery life can be expected. The electrical energy consumption in the HESS is reduced by 3.91% compared with that in the battery only system. Fuel consumption of the HEV is reduced by 24.3% compared with that of the same class conventional vehicles under Economic Commission of Europe driving cycle.  相似文献   

Cultural analyses in a Taiwanese kindergarten: A postcolonial reflection and study   总被引：1，自引：0，他引：1  

Teng Huang 《International Journal of Educational Development》2013

The concept of homogenization is highlighted in the current discourse of postcolonialism in the educational arena. However, this concept strengthens the dimension of cultural convergence, but not the dimension of cultural divergence. Furthermore, an overly dualistic view is also aligned with the concept of homogenization and then leads to the neglect of the phenomenon of cultural hybridity and the studies of cultural differences. Through a qualitative study in a Taiwanese kindergarten, this study investigates whether any cultural hybridity appears in classroom practices, and what happens in the process. The results indicate that the concept of cultural hybridity is more suitable to explain the complex phenomena in schools, and both the ontologically and epistemologically cultural aspects are interwoven in the process of hybridity. According to the results, I propose a three-stage framework to interpret the development of hybridity: the extent of the matched context, the extent of cultural conflict, and the awareness of cultural difference.  相似文献   

混合选举制评析   总被引：1，自引：0，他引：1  

刘杰  甫玉龙 《历史教学(高校版)》2009,(3)

混合选举制是二战后由德国首创的一种新型选举制度。它把世界原有两大选举模式即多数制代表制与比例代表制相结合,不同程度地克服了其各自的弱点。20 世纪 90 年代以来,世界许多国家依据其各自的政治需要,对德国式的混合选举制作了不同程度的修正,从而使之各具特色,形式多样,并由此成为21 世纪世界选举制改革的一种趋势。本文着重分析混合选举制产生的历史背景、原理、特征及其带来的政治效果。  相似文献   

语言帝国主义视域下的翻译策略     

韦忠生 《福建师大福清分校学报》2010,(1):73-76

本文分析了语言帝国主义及其产生原因,探讨了在语言帝国主义视角下的翻译策略,认为后殖民翻译理论家韦努蒂归化和异化的翻译策略,霍米·巴巴的后殖民“杂合”理论以及翻译学转向不失为解构的翻译策略。  相似文献