基于文本挖掘和技术路线图的技术创新机会发现

本文在介绍文本挖掘和技术路线图研究情况的基础上，探讨如何将文本挖掘和技术路线图结合起来，通过挖掘隐含在科技信息中的知识和联系，并结合技术领域专家，绘制技术路线图，以帮助技术主管发现技术创新的机会。     

过刊全文数据库JSTOR及其特色分析

基于因特网的电子期刊的出版 ,过去比较多地集中在现刊上。但是近年来越来越多的出版商或专业人士意识到 ,实际上许多早年发表的学术论文并没有随着时间的推移而失去其使用价值 ,它们的“有效期”超过人们已有的估计。有统计表明 ,最常被引用的 10篇经济学论文 ,它们的发表时间平均距现在 15年以上 ;而最常被引用的数学论文的发表时间平均距现在 30年以上[1] 。基于这样的认识 ,开始有人把注意力放在学术性期刊过刊全文数据库的开发上 ,例如ElsevierScience出版公司的过刊文档项目(BackfileProject) ,就是要逐步将其出版的所有期刊全部电…     

A hybrid generative/discriminative approach to text classification with additional information

This paper presents a classifier for text data samples consisting of main text and additional components, such as Web pages and technical papers. We focus on multiclass and single-labeled text classification problems and design the classifier based on a hybrid composed of probabilistic generative and discriminative approaches. Our formulation considers individual component generative models and constructs the classifier by combining these trained models based on the maximum entropy principle. We use naive Bayes models as the component generative models for the main text and additional components such as titles, links, and authors, so that we can apply our formulation to document and Web page classification problems. Our experimental results for four test collections confirmed that our hybrid approach effectively combined main text and additional components and thus improved classification performance.     

基于WWW的ProQuest6.0全文数据库检索系统分析

本文以美国ProQuest公司开发的ProQuest6．0全文数据库检索系统为例，主要分析了其检索性能，指出较之以前版本的新增功能所在，并对其特点进行了评价，提出对中文检索系统发展的一点建议。     

OA出版技术进展及对国内OA论文可见度的启示

开放获取(Open Access,OA)出版平台及OA论文的查找定位技术在近5年飞速壮大。虽然学术出版界对OA论文在引用上的优势已达成共识,但是OA论文的传播途径和获取可见度的方式仍然模糊。本文通过分析近年来OA出版平台技术、索引技术及查找定位技术的发展,深入了解它们的运作机制,从而梳理出OA论文出版体系,描绘了OA论文的传播路径,并借此分析国内OA出版在技术上的短板及未来发展方向,提出了提升国内OA论文可见度的具体实施措施,以利于提高我国OA学术出版在国际上的影响力。     

Reporting from the Frontline

This paper focuses on the war correspondents traveling in the Balkans during the period of the Balkan Wars (1912–1913) to cover military campaigns. It tries to explore the paths of information, the mechanisms of propaganda and the restrictions used by the Balkan states to control the content of the news transmitted. The Balkan Wars were among the first military events covered so extensively by newspapers all around the world. In the battle-fields the principles of the new field of journalism were highly tested. The lessons learnt in the Balkans during the Balkan Wars proved to be productive and useful for the improvement of the relationship between war correspondents and military authorities.     

新媒体时代典型人物报道致效之思

典型人物报道在讲述好故事、传播正能量中有其独特价值与意义,但在当下的新媒体时代,典型人物报道却时常遭受质疑。本文尝试为典型人物报道破解困局提供思路借鉴,提出典型人物报道须坚持宣传导向性与内容真实性的统一,遵循"其言直,其事核,不隐恶,不溢美"原则;议程构建平民化,让受众有代入感;价值认知与时代同步,凸显人文关怀。     

戏剧化叙事:湖南卫视《绝对忠诚》的新闻舆论引导策略

湖南卫视新闻大片《绝对忠诚》聚焦科学家和军人的先进事迹,以现象级电视新闻新模式的典型个案,一度引人关注。它大胆采用“戏剧化”的电视叙事,通过戏剧情景的设计、戏剧悬念的营造、戏剧冲突的实现,从而增强信息表达的趣味性和传播力,成为地方电视新闻舆论引导的成功范例。     

Deep Participation in Underserved Communities: A Quantitative Analysis of Hearken’s Model for Engagement Journalism

ABSTRACT

Hearken is a proprietary news engagement platform growing in popularity. Under the Hearken approach, audience members are invited to participate in the newsmaking process. Hearken strives to assist news organizations in providing local and hyperlocal content that meets audience needs and demands while preserving elements of the journalist’s role as gatekeeper. Hearken has also worked to help news organizations reach underrepresented populations with mixed results per its own anecdotal analyses. This study employs a quantitative content analysis comparing one year’s worth of coverage at four different local NPR affiliates in the United States to provide a breakdown of Hearken content versus traditional reporter-driven content in the following four categories: emphasis on hyperlocal coverage, story topic prevalence within local and hyperlocal coverage, emphasis on coverage of underrepresented communities, and story topic prevalence within coverage of underrepresented communities. Findings reveal listener-driven Hearken content favors hyperlocal news on lifestyle issues while reporter-driven stories emphasize state-level governance and politics as well as local crime. These indicate a stark contrast between the content audiences want and that which journalists tend to report. The nuanced normative implications, possibilities and limitations of Hearken’s model of “deep participation” are addressed in some detail.     

人教版初中、高中数学教材中数学史的调查分析

数学史对数学教育有重要价值.通过对人教版<义务教育课程标准实验教材·数学>(七年级上册～九年级下册)、<普通高中课程标准实验教科书·数学(必修)>A版中数学史的调查分析发现,教材中的数学史在数量上有所增加,选材的视角也有所拓展,但对数学史的处理仍存在简单化倾向.本文认为,应重视数学史的教育价值,在此基础上,应进一步丰富...