共查询到20条相似文献，搜索用时 62 毫秒
1.
微博依靠其较强的信息扩散能力成为众多企业进行线上营销的主要渠道。较高的微博影响力水平对企业营销信息的推广传播具有一定的推动作用,而电信运营商的官方微博尚存在影响力较为欠缺的情况。本文首先通过文献研究、因子分析等方法归纳聚合出3个微博影响力的主要因素,据此构建了微博影响力评价指标体系。因子分析的结果表明微博账号的信息传播能力对微博影响力的方差贡献率最高,其次为账号活跃度。最后,本文基于因子得分对30个电信运营商官方微博的影响力进行实证分析,分别计算得出各微博账号的指标因子得分及影响力综合得分。依据得分情况对各电信运营企业提出具体的微博影响力提升策略。 相似文献
2.
【目的/意义】随着网络化信息时代的到来，在互联网技术框架下，在网络上进行信息的生产、传播和扩散已 成为主流。由于微博的双向互动性，微博已成为受众面最广、参与度最高的社交网络平台，对微博影响力进行分析 评价具有重要意义。【方法/过程】本文以高校官方微博为关注对象，选取7个影响力指标为样本，通过对指标数据进 行主成分分析，降维提取主成分特征，对各高校官方微博的影响力进行综合评估。【结果/结论】最后，结合高校官方 微博影响力评价结果，以吉林大学官方微博为例，对提高影响力的对策进行研究。 相似文献
3.
[目的/意义]文章跟据影响力定义融入信息受众情感特征指标构建了高校新媒体影响力评价指标体系,扩展了传统影响力评价体系,突出了以信息受众的情感与行为表现作为高校新媒体影响力的核心评价目标。[方法/过程]以118个高校官方微博为例,对高校微博影响力评价的情感表征指标和行为表征指标进行处理与量化,并结合主成分分析与因子分析进行评价实证。[结果/结论]情感表征与行为表征得分之间具有明显差异,情感指标为高校新媒体影响力评价提供了更细粒度的参考单元。因子得分指出高校微博影响力得分整体差距较大,大部分集中在低数值区域;采用层次聚类法以情感特征和行为特征进行聚类可以将高校微博分为4种类型。 相似文献
4.
胡洪彬 《中外科技政策与管理》2013,(12):54-63
地方政府官方微博是民众了解政府信息的重要窗口,也是地方政府进行社会管理的重要平台。以新浪微博认证的浙江省、市、县（区）三级18个地方政府官方微博为研究对象,采用计量分析和内容分析相结合的研究方法对官方微博的总体状况、发布时间、主体内容以及语言特征进行统计分析。研究发现,虽然目前地方政府官方微博取得了一定程度的应用和普及,但发展和运行过程中仍然存在微博总体影响力不高、微博互动交流能力不足、微博管理能力有待提升的现实问题。最后提出了进一步改进官方微博的策略建议：合理应用语言,实现官方微博在权威性和亲民性间的协调;培养管理团队,提升官方微博的管理能力。地方政府应强化内容管理,不断提升官方微博的影响力合理安排信息发布时间,不断拓宽官方微博的网络关联 相似文献
5.
张蒙 《内蒙古科技与经济》2023,(14):37-40
选取黑龙江省19所高校微博内容作为样本数据，以探求高校官方微博主题特征对用户信息参与行为影响的实际效果，这对高校官方微博账户运营发展有很重要的现实意义。首先爬取黑龙江省19所高校官方微博数据内容信息，然后采用LDA算法进行主题分类编码，最后运用多元线性回归法验证各个主题对用户信息参与行为产生的影响。研究展示了各个主题特征对用户信息参与行为的影响大小，并提出了提升高校官方微博用户参与度和账户活跃度的有效建议。 相似文献
6.
7.
[目的/意义]从时间纵向维度展现社交媒体辟谣信息扩散的演化脉络,有助于厘清辟谣信息扩散的内在机理。[方法/过程]将"@人民网"官方微博发布的"全国暴雨"辟谣信息作为起点,收集该辟谣微博发布后7天内的转发数据。采用社会网络分析方法,构建社交媒体辟谣信息扩散的演化网络,并分析其扩散的内在机理。[结果/结论]主要研究发现如下：①社交媒体辟谣信息从爆发期、高潮期到消退期的演化路径为：辟谣信息被政府官方微博发布后,会在极短时间内在其发布者的"紧密型"社交圈中（政府机构用户间）迅速扩散;随后,辟谣信息主要经由"大V名人"与其粉丝构成的"松散型"网络,向大V名人的粉丝扩散;最后,辟谣信息经由大V名人的粉丝,在粉丝与其好友的"紧密型"网络中扩散,直至消退。②辟谣信息扩散网络在三个时期的密度均较小。③与微博谣言扩散有所不同,绝大多数微博辟谣信息的扩散主体之间并没有互动,仅表现为单向传递关系。④相比政府官方微博而言,"大V名人"转发辟谣信息所带来的效应更能够激起受众对辟谣信息的精神共鸣,更能促进辟谣信息的扩散。 相似文献
8.
以新浪微博中用户数据为基础,建立"名气指数",并使用统计分析、相关分析、Apriori模型分析挖掘名人用户的总体特征、关系特征和行为特征,以及创建"转发影响力指数"定量研究名人效应。研究表明:名人微博用户特征具有较强个性化,在微博活跃用户群体中具有极大的代表性;名人用户在微博中曝光度较高,通过公开自己的真实资料,提高自己的名气;企业可以根据自身需求,通过名气指数或转发影响力指数的结果进行微博营销决策。 相似文献
9.
10.
【目的/意义】研究新媒体环境下企业微博信息行为特征,通过对比分析五家同类型企业微博信息行为过程,提出建议,从而提高企业与用户信息交互的效果,提高企业核心竞争力。【方法/过程】本文通过网络爬虫采集五家汽车企业近三年来的全部微博数据及粉丝数据,采用知识图谱分析方法,将企业微博在线活动特征可视化,分析企业在线活动的时间特征,在线内容挖掘及热点分析,共同关注者的网络可视化及差异比较。【结果/结论】本文基于知识图谱构建的新媒体环境下企业微博信息行为模型可以作为企业在线信息活动分析的研究框架;数据分析结果表明企业可以利用新媒体平台进行在线活动,提升企业与用户的信息交互效果。 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