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1.
【目的/意义】社交网络舆情监管关乎社会稳定,区块链作为当前一种重要的应用技术,关于区块链社交网
络的信息传播特征和规律研究将有利于对区块链社交应用的舆情监管提供一定的理论依据。【方法/过程】基于区
块链和信息传播理论,通过爬虫采集区块链社交网络应用数据,采用社会网络分析法,利用Gephi进行数据可视化
并利用统计分析软件进行数据处理。在此基础上,对整体网络下的社群进行对比分析,重点讨论了声誉分与用户
度的关系情况。【结果/结论】区块链社交网络为无标度网络;社群间的平均聚类基本一致并且较低;用户发帖量服
从幂律分布;声誉分高的用户在区块链网络中的影响力较大,其在舆情网络信息传播过程中起着重要的作用。【创
新/局限】基于区块链社交网络应用,本文分析了区块链整体社交网络及区块链社群网络的舆情信息传播特征及规
律,后续将采用动态网络、超网络方法对区块链网络舆情信息传播特征及规律进行分析研究。 相似文献
2.
【 目的/意义】通过构建区块链社交网络舆情风险管理纾解对策,对于创造良好网络环境,提升网络舆情治理
效能以及应对网络风险复杂局面提供可行性方案。【方法/过程】本研究立足区块链理念与技术,分析社交网络舆情
风险管理概念框架,指明社交网络舆情风险现存问题,进一步探究区块链技术下社交网络舆情治理与纾解机理,建
立社交网络舆情管理系统模型,并从技术推进、多方协作、媒体引导等层面探究防控社交网络舆情风险的密钥。【结
果/结论】区块链技术对社交网络舆情风险治理、提高舆情信息传播质量具有积极作用,为营造健康、安全共享等网
络社交生态系统提供诸多可能性。【创新/局限】本文构建的区块链社交网络舆情管理模型是一个初步的设想,没有
考虑信息存储的上限,下一步研究工作是提升区块链社交网络舆情管理系统的兼容性和数据采集的标准化,为区
块链社交网络舆情管控提供参考。 相似文献
3.
4.
【目的/意义】社交媒体网络成为突发事件的主要传播平台,也使得网络舆情影响力得到更大范围的扩散和
传播。【方法/过程】本文首先梳理了国内外学者对社交媒体网络舆情传播影响力研究的现状,从研究着力点、研究
方法、衡量因素及评价方法进行评述。然后,对影响社交媒体网络舆情传播的信息生态链、群体情绪研究进行分
析。最后,从加强政府治理舆情治理的可控性角度,对社交媒体网络舆情传播影响力的指标构建情况分析。【结果/
结论】本文认为,为提高对网络舆情影响力的可控性,应从公众情绪、媒体责任、政府治理加强引导和治理。 相似文献
5.
【目的】 学术期刊与大众媒体合作,能够达到提升期刊影响力、彰显期刊学术价值、树立期刊学科品牌、打造期刊个性化名片等目的。【方法】 通过调研国内外学术期刊与大众媒体的融合现状,总结适合国内学术期刊与大众媒体的合作模式。【结果】 学术期刊与大众媒体的合作模式主要包括将科研成果转化为新闻报道,挖掘学术论文的社会价值,期刊集群整体营销以及借助新媒体传播平台。【结论】 将学术期刊与大众媒体融合是信息时代提高学术期刊可持续发展能力的新思路。 相似文献
6.
【目的】分析科技期刊融媒体建设现状,提出融媒体传播策略。【方法】以“中国科技期刊卓越行动计划”入选期刊为样本,调研期刊融媒体建设现状,抽样调研期刊新媒体发布内容和目标读者,从不同期刊类型角度分析融媒体建设情况和传播效果,总结科技期刊融媒体传播经验和存在的问题。【结果】80%以上的样本期刊已开展融媒体建设,但传播渠道少,传播形式单一,粉丝黏性较差。有趣易懂的科普内容在新媒体上更容易被读者接受。【结论】科技期刊融媒体建设具有潜力,期刊可利用学科特点打造优质内容,基于多种媒体格式建立多渠道融媒体传播模式,吸引读者转发、评论、点赞以进行多链条裂变传播,培养复合型数字编辑等。 相似文献
7.
【目的/意义】社交媒体在改变新闻传播以及人类获取信息方式的同时,也成为了虚假新闻传播的主要渠
道。因此,快速识别社交媒体中的虚假新闻,扼制虚假信息的传播,对净化网络空间、维护公共安全至关重要。【方
法/过程】为了有效识别社交媒体上发布的虚假新闻,本文基于对虚假新闻内容特征的深入剖析,分别设计了文本
词向量、文本情感、图像底层、图像语义特征的表示方法,用以提取社交网络中虚假新闻的图像特征信息和文本特
征信息,构建多模态特征融合的虚假新闻检测模型,并使用MediaEval2015数据集对模型性能进行效果验证。【结果/
结论】通过对比分析不同特征组合方式和不同分类方法的实验结果,发现融合文本特征和图像特征的多模态模型
可以有效提升虚假新闻检测效果。【创新/局限】研究从多模态的角度设计了虚假新闻检测模型,融合了文本与图像
的多种特征。然而采用向量拼接来实现特征融合,不仅无法实现各种特征的充分互补,而且容易造成维度灾难。 相似文献
8.
梁洁 《中国科技期刊研究》2016,27(2):185-192
【目的】研究传统学术出版行业与互联网技术相融合的学术出版模式,以更好地促进科学研究的发展与传播,为我国探索新兴的学术期刊出版模式提供借鉴。【方法】以ScienceOpen为例,对其基于互联网思维的学术出版模式进行详细介绍和分析。【结果】ScienceOpen将预出版和OA出版相结合,采用非匿名的公开评审模式,使传统学术期刊出版流程得到优化,并通过合集、群组的方式,更好地促进了互联网时代学术交流与合作。【结论】基于互联网的学术出版平台必须具有平等、开放、协作、分享的基本特征,使科研人员可以参与学术论文出版、传播的全过程,并可基于社交网络进行分享和评价,提高科研成果发布和传播的效率。 相似文献
9.
【目的/意义】近年来,各大社交媒体平台用户使用率不断下降,意味着平台用户生成内容行为的减少,这无
疑对社交媒体的影响力产生了巨大影响。因此,有必要从社交媒体平台独特的互动性技术特征出发去探究用户生
成内容的影响因素。【方法/过程】以用户感知互动性为研究切入点,并基于社会认知理论、价值理论,提出用户感知
互动性、感知价值和用户生成内容之间作用机制的研究模型,通过调查问卷法与Smart PLS 进行数据分析与模型验
证。【结果/结论】研究结果表明,在社交媒体情境下用户的感知活动性显著影响用户对社交媒体平台的信息价值感
知、自我呈现以及社会认同的满足程度,最终显著促进用户的内容生成行为。 相似文献
10.
【目的/意义】社交媒体中网络舆情在演化过程中可能出现意见分化、对立或集聚,进而产生网络声讨或网络
对峙的群体极化现象。研究旨在通过梳理国外社交媒体中群体极化的发展脉络与研究主题,为我国相关研究发展
提供参考。【方法/过程】本文将国外社交媒体群体极化研究分为主题发现阶段、主题发展阶段以及主题成熟阶段,
并深入剖析在各个阶段下的发展脉络。【结果/结论】本文通过对该主题的整理和分析,总结了五项国外社交媒体中
群体极化研究热点,包括群体极化的动力机制、群体情感或观点极化、群体极化的仿真预测、群体极化的影响因素
以及群体极化的管理策略。最后,提出未来可从网络谣言传播中的群体极化、内生极化与外生极化以及群体去极
化等内容展开进一步研究工作。【创新/局限】系统性梳理社交媒体群体极化的国外发展脉络和研究现状,结合信息
管理学科研究主题提出了未来的研究方向。 相似文献
11.
A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
12.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
13.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
14.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
15.
Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
16.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
17.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
18.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
19.
Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
20.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献