Semantic categorization of digital home photo using photographic region templates

In this paper, a semantic categorization method in generic home photos is proposed. In recent years, the semantic categorization of image has been a challenge due to the proliferation of digital home photos. Our approach is to detect semantically meaningful concepts contained in a photo. The proposed method incorporates an intermediate level of concepts, called local concept, so that it catches well semantic meaning of local regions of image as bridging the semantic gap of the low-level features and high-level category concepts. To detect the local concepts from the home photo, region segmentation by photographic region template and concept merging is also proposed. The efficacy of the proposed semantic categorization method was demonstrated with 3828 general home photos. The experiment results showed the proposed categorization method would be useful to detect multiple semantic meaning of the home photos.     

The effects of worked examples in computer-based instruction: focus on the presentation format of worked examples and prior knowledge of learners

The aim of this study is to investigate the effects of presentation formats of worked examples and the interaction effects between the presentation formats of worked examples and the prior knowledge of learners. An investigation with 97 middle school students working in four conditions (CPWE, CWE, PWE, and the control group) was conducted. The results indicate that CPWE was the most effective condition in retention and transfer. In addition, a partial expertise reversal effect was revealed in the element transfer test. High prior knowledge learners in both CPWE and PWE were superior to those who were in CWE and the control group, while low prior knowledge learners in CPWE were superior to those who were in other conditions.     

基于“教、学、做”一体化的非电类电工技术课程改革探索与实践

针对非电类专业电工技术课程教学情况及存在的问题,开展了系列改革与实践探索。首先构建模块化教学内容,以满足不同专业、层次的学生需求;然后自主研发系列实训装置,创建＂教、学、做＂一体化真实工程环境;继而创新实施＂教、学、做＂一体化电工技术教学模式;最后健全完善了课程考核评价方式。实践证明,基于＂教、学、做＂一体化的非电类电工技术课程改革产生良好效果,为同类课程的改革起到了示范带动作用。     

优化普通高校乒乓球选项课的新思路

随着教育改革的深入,结合普通高校乒乓球选项课教学的现状,必须加快乒乓球选项课教学革新的步伐。通过回顾历史,提出优化乒乓球选项课的对策,旨为普通高校乒乓球选项课的教学实验及改革提供参考。     

Coding Classroom Interactions for Collective and Individual Engagement

This article characterizes “engagement in science learning” from a sociocultural perspective and offers a mixed method approach to measuring engagement that combines critical discourse analysis (CDA) and social network analysis (SNA). Conceptualizing engagement from a sociocultural perspective, the article discusses the advantages of a mixed methodological approach, and specifically how mixed methods can expand and enrich our understanding of engagement in certain science learning situations. Through this sociocultural viewpoint, engagement is defined as meaningful changes in disciplinary discourse practice, which captures the dialectical relationship between the individual and collective. The combined use of CDA and SNA integrates an individual's relative position in a group with her situated language use.     

大学生流行文化及其对学生价值观影响的调研报告

新时代的流行文化已在大学里普遍流行,并对大学生的价值观产生了巨大的冲击。本报告主要介绍了通过问卷调查分析总结出来的关于大学生流行文化及其对大学生价值观影响的基本情况,关于网络文化、影视文化、选秀文化在大学里的具体情况及其对大学生价值观的影响。针对流行文化的影响,教师应该正确引导学生面对流行文化,树立正确价值观。     

儿童信息查询行为研究

从三个方面对国外儿童信息查询行为研究领域的主要进展和热点问题进行综述,包括：①儿童信息需求;②儿童信息查询方式,包括OPACs、多媒体百科全书、网络;③儿童信息查询行为影响因素,包括主题相关领域知识、任务类型、情感状态及认知发展,并在此基础上得出启示,以期对国内儿童信息查询行为相关问题的研究和服务提供参考。     

Composition of board of directors of major media corporations

This article examines major determinants of interlocking directorates of media companies by applying resource dependency theory. The study found that firms with greater dependence upon advertisers and financial institutions have more representatives of those interests on their boards. Diversified media companies were found to have more attorneys and interlocking directorships with competing firms.     

Interplay of content type and product type in the consumer response to native advertising on social media

With the growth of consumer skepticism toward advertising, marketers have begun implementing native advertising. Drawing on the Persuasion Knowledge Model (PKM), this study examines how content type interacts with product type to influence consumer responses toward native advertising (persuasion knowledge, brand attitude, and intention to click ‘like’) on Facebook. A 2(content type: informative versus entertaining)×2(product type: utilitarian versus hedonic) between-subjects experimental study was conducted with a total of 155 college-attending Facebook users in South Korea. The results show that, for utilitarian products, informative content elicits more favorable consumer responses than entertaining content does. However, consumer responses are similar between informative and entertaining content for hedonic products. Furthermore, this study demonstrates that consumer persuasion knowledge mediates the interaction effects of content type and product type on consumer responses. Theoretical and practical implications are also discussed.     

Applying the communication theory of Diffusion of Innovations to economic sciences: a response to the ‘Using gossips to spread information’ experiments conducted by the 2019 Nobel Laureates

ABSTRACT

Drs Abhijit Banergee, Esther Duflo, and Michael Kremer won the 2019 Nobel Prize in Economic Sciences for their remarkable series of large-scale field experiments to lessen global poverty. The main theoretical framework that they employed was the diffusion of innovations research and practice paradigm (DOI) which has had a long presence in communication research dating back to the 1940s. Here, we reviewed the Nobel laureates’ article, ‘Using gossips to spread information: Theory and evidence from two randomized controlled trials,’ that is illustrative of how economists applied the communication theory of diffusion of innovations to their projects of social change. The present article poses questions and makes recommendations for similar future projects from a communication perspective.