机会发现理论对推荐系统的改进     

裴倩  王玉平 《数字图书馆论坛》2012,(3):46-51

文章分析推荐系统的现状和存在问题,引入关注动态变化、发现隐性关联和弱信号的机会发现理论,依次从收集用户信息、掌握用户兴趣变化和匹配资源方面,探讨机会发现理论对推荐系统的改进。通过改进兴趣模型、建立自适应推荐模块、提供集成推荐等措施,提升推荐系统效率。  相似文献   

P2P技术在图书馆联盟云服务中的应用研究     

杨贵福  黄秀林  牛宝乐  隋会民  刘万国 《数字图书馆论坛》2012,(3):25-28

P2P技术的数据流量在当代因特网传输中具有重要地位,我们提出基于云服务的P2P资源离线下载模式,由应用服务器负责P2P下载,用户通过下载中心把完成下载的资源传输到本地。在P2P下载期间,用户不必运行P2P客户端程序,也不必开启本地计算机。这一模式能减少重复下载热点资源对Intranet公共出口带宽的堵塞,减少漫长等待稀缺资源的过程困扰下载用户,避免热点资源的网络流量突增导致其他程序性能受到影响,解决了传输瓶颈,提高联盟用户下载资源的速度,节省了成本。  相似文献   

普通外籍人士对图书馆利用与需求状况调研分析     

肖爱斌  许萍 《图书情报知识》2012,(5):68-81

为了了解和掌握普通外籍人士对图书馆的利用及需求情况,项目组运用调查问卷法及SPSS对其进行了调查和统计分析,结果表明,他们阅读的主要目的是为了获取与就业、教育、社会福利和中国文化相关的信息。但语言和文化的差异在很大程度上影响了他们对中文图书资料的阅读。所以图书馆多元文化建设应照顾不同层次、不同背景读者群的具体需求,在地点设置、馆藏布局、资料采购、服务项目上不断调整和完善,为他们提供更好的有针对性的服务。  相似文献   

信息媒体数字视频图书馆——开创多媒体数字图书馆先河     

刘燕权  孙秀良 《数字图书馆论坛》2014,(3):67-71

信息媒体数字视频图书馆（TheINFORMEDIADigitalVideoLibrary,简称IDVL）项目是美国数字图书馆创始计划（DigitalLibrariesInitiative,简~,DLI）最初的六个项目之一,由卡内基·梅隆大学于1994年创建。该项目一直在深入地开发数字视频及其相关技术和工具,致力于建立一个庞大的在线数字视频图书馆,为用户提供多媒体信息服务。文章对该数字图书馆的项目概况、资源组织、技术特征和服务特点等进行了综合介绍和评价。  相似文献   

Watching MOOCs together: investigating co-located MOOC study groups     

Nan Li  Himanshu Verma  Afroditi Skevi  Guillaume Zufferey  Jan Blom  Pierre Dillenbourg 《Distance Education》2014,35(2):217-233

Research suggests that massive open online course (MOOC) students prefer to study in groups, and that social facilitation within the study groups may render the learning of difficult concepts a pleasing experience. We report on a longitudinal study that investigates how co-located study groups watch and study MOOC videos together. The study was conducted with on-campus flipped classroom students. Our subjects reported an overall high satisfaction with the study group style. The research reveals that students like to stay synchronized in the group while watching MOOC videos. However, they have to find a balance between synchronization, video interaction, and the amount of conversation. Watching MOOCs on a shared display addresses the need of synchronicity, and the distribution of control can increase the video interactivities.  相似文献   

Suburban American Punks and the Musical Rhetoric of Green Day's “Jesus of Suburbia”     

Lisa M. Chuang & John P. Hart 《Communication Studies》2013,64(3):183-201

This essay examines Green Day's “Jesus of Suburbia” as an artifact and reflection of suburban American punk culture. It looks at how music, lyrics, and the ethos of the performer interact to create a message that fostered identification between speaker and audience by using Sellnow and Sellnow's Langer-based illusion of life perspective. In this case it was found that music can be seen as an effective tool for expressing the suburban punk experience due to its ability to convey both linguistic and emotional content.  相似文献   

Books received     

Paul Westbrook Book/Media Reviews Editor 《Journal of Applied Communication Research》2013,41(1):51-52

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News and Ideological Exegesis in Chinese Online Media: A Case Study of Crime Coverage and Reader Discussion on Two Commercial Portals     

Li Xiao & Judy Polumbaum 《亚洲交流杂志》2013,23(1):40-58

Analyzing news stories, commentaries, and readers’ discussions of a sensational serial murder case on China's two most popular commercial online portals, this study examines how the Internet's medium-specific characteristics of unlimited space and interactivity facilitate both reinforcement and challenges to dominant ideologies of crime coverage. The study finds that news accounts on the two portals, Sina.com and Sohu.com, to a large degree favored the interests of the powerful over the powerless, excusing the inefficiency of the police and portraying causes of crime as individual; while readers contributing to online forums on the case voiced concern about social issues underlying crime, expressed standpoints of the poor and underprivileged, and questioned the authority and intentions of the powerful. The result was that, even as news accounts generally reinforced prevailing social relations, readers’ comments upturned them with analyses of inequality, poverty and discrimination. The study lends additional weight to the assertion that the Internet's unlimited space and allowance for simultaneous interactivity among many voices are leading to qualitative changes in public communications as well as quantitative increases in information flow. Even within the context of Chinese information control, online forums open up new options for users that we characterize as exegetical, implying broad possibilities for explanation and exposition as well as for alternative ideological renderings.  相似文献   

Redefinition,Differentiation, and the Farm Animal Welfare Debate     

Kendra Lancaster & Josh Boyd 《Journal of Applied Communication Research》2013,41(2):185-202

Animal welfare advocates have increased publics' scrutiny of the way animals are handled by everyone from pet owners to circuses to farmers. The case of farmer Gary Conklin illustrates a popular recent tactic of activists to secretly film working farms and then release videos that purport to show abuse. This essay uses the concepts of legitimacy and image restoration to examine how Conklin, with a small farming operation in Ohio, responded to allegations spread by social media. Two important principles emerged: first, an effective differentiation strategy for reducing offensiveness is “redefining the act,” a combination of image repair tactics where an undisputed fact is redefined and transformed with support from third-party affirmations. Second, even small organizations like this dairy cattle business face the same challenges and opportunities as larger organizational rhetors. The essay concludes with applications both for agriculture and for crisis communication scholars, asserting that agricultural enterprises will continue to face struggles over meaning that will require sophisticated methods of issue and crisis management.  相似文献   

Becoming artist,becoming educated,becoming undone: toward a nomadic perspective of college student identity development     

Kelly Clark/Keefe 《International journal of qualitative studies in education》2013,26(1):110-134

In this article, I place my ethnographic project among undergraduate university art students and their professor in dialog with Rosi Braidotti’s figuration of the nomadic subject and her reflections on the importance of creating theoretical alternatives for mapping the embedded and embodied social positions that we inhabit. As educational interlocutors, college students must negotiate expectations and categorizations about age-appropriate relations, career paths, and identity passageways, which are always already framed by Western psychological development discourses. Interested in loosening the grip of these closure-seeking and normalizing discursive practices, I argue for a revision of identity development grounded in a nomadic theory of the subject and engage my data through an alternative analytic of arts-informed assemblage in light of Braidotti’s ideas. In so doing, I uphold my feminist commitment to do theory as both critique and creativity, bringing into view poetic-enough writing and imagery as a response to the question how is it to be in the process of becoming?  相似文献