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网络成瘾,已经被认定为一种心理性异常症状,可能产生角色错位、人性异化、自我迷失、道德失范、技术崇拜等心理危害。很大程度的影响了网络成瘾者的日常生活、学习、工作、社交等。近十年来,对网络成瘾的研究较多。将社会网络分析法应用到对网络成瘾的发文成果的研究中,分析出与网络成瘾相关的关键词和领域,以及研究网络成瘾的作者合作情况。 相似文献
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移动环境下,高校网络舆情对师生员工们产生了巨大的影响,尤其是在移动通讯高度发达的当代,高校师生几乎人手1部手机,网络舆情对其的影响更是不可忽视。本文通过对移动环境下高校网络舆情相关主体进行分析,建立移动环境下高校网络舆情演化的动力学模型,采用Vensim PLE软件对模型进行仿真分析,仿真结果最终表明提高高校信息公开程度,降低网民的舆情关注度和媒体作用力能够有效提升高校在移动环境下应对网络舆情的效率。 相似文献
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Jacint Jordana Xavier Fern ndez David Sancho Yanina Welp 《The Information Society》2005,21(5):341-351
We examine the effect of public policy on the growth of Internet use. Using a decentralized country—Spain—as an example, we compare the 17 Spanish regions to test different Internet policy designs, taking into account the quality and number of specific programs promoted by regional governments, as well as the presence or absence of strategic planning in each region. We treat the percentage of Internet users as a dependent variable to compare its diffusion in different territories. Our findings show that educational levels and economic differences explain about half of the variations observed. Furthermore, the regional policies play a significant role in explaining regional variations. We investigate which public policy instruments are more significant for the development of the Internet, and find that focused policy intervention and complex policy initiatives are more significant than other policy instruments in explaining the increase in the percentage of Internet users. 相似文献
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随着互联网的普及,越来越多的人利用网络不再局限于网上聊天、查看邮件、看电影,而是利用网络进行电子商务活动,和客观世界中的商务活动一样,电子商务同样可能面临泄密和欺诈行为。特别是在开放的互联网上进行交易,如何安全地进行网上交易,确保商务活动中的信息安全已成为构建电子商务网站时的重中之重。本文论述了采用基于表现层、业务层、数据层的三层分离松耦合技术的SSH(Struts+Hibernate+Spring)技术构建电子商务网站时应采取的安全措施。 相似文献
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《Journal of The Franklin Institute》2023,360(2):1344-1377
A novel finite-time complex-valued zeroing neural network (FTCVZNN) for solving time-varying Sylvester equation is proposed and investigated. Asymptotic stability analysis of this network is examined with any general activation function satisfying a condition or with an odd monotonically increasing activation function. So far, finite-time model studies have been investigated for the upper bound time of convergence using a linear activation function with design formula for the derivative of the error or with variations of sign-bi-power activation functions to zeroing neural networks. A function adaptive coefficient for sign-bi-power activation function (FA-CSBP) is introduced and examined for faster convergence. An upper bound on convergence time is derived with the two components in the function adaptive coefficients of sign-bi-power activation function. Numerical simulation results demonstrate that the FTCVZNN with function adaptive coefficient for sign-bi-power activation function is faster than applying a sign-bi-power activation function to the zeroing neural network (ZNN) and the other finite-time complex-valued models for the selected example problems. 相似文献
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Jacint Jordana Xavier Fernández David Sancho Yanina Welp 《The Information Society》2013,29(5):341-351
We examine the effect of public policy on the growth of Internet use. Using a decentralized country—Spain—as an example, we compare the 17 Spanish regions to test different Internet policy designs, taking into account the quality and number of specific programs promoted by regional governments, as well as the presence or absence of strategic planning in each region. We treat the percentage of Internet users as a dependent variable to compare its diffusion in different territories. Our findings show that educational levels and economic differences explain about half of the variations observed. Furthermore, the regional policies play a significant role in explaining regional variations. We investigate which public policy instruments are more significant for the development of the Internet, and find that focused policy intervention and complex policy initiatives are more significant than other policy instruments in explaining the increase in the percentage of Internet users. 相似文献
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[目的/意义]当今,在多极化信息传播模式下,及时防范和有效处理突发事件网络舆情迫在眉睫。[方法/过程]采用社会网络分析方法,结合具有典型代表意义的突发事件案例,对其产生的网络舆情数据加以采集与组织,接着进行了突发事件网络舆情传播的定量化的测度分析,试图挖掘与识别关键节点并解释其内在的结构特征与演变规律。[结果/结论]根据本文案例研究结果,提出了针对突发事件舆情传播网络结构本身的控制对策;借助香农信息通信理论,提出了针对舆情主体的信源（政府）—信使（媒体）—信宿（公众）思维变革的突发事件网络舆情引导对策;基于善治理论,提出了政府应坚持"善治"理念,与公众协同管理的突发事件网络舆情引导对策。 相似文献
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Juan-Gabriel Cegarra-Navarro José Rodrigo Córdoba Pachón José Luis Moreno Cegarra 《International Journal of Information Management》2012
As a mixture of new technologies, processes and services oriented to the citizen, e-government has become one of the most important keywords for the public sector reform with proponents claiming that it guarantees transparency, accountability and better communication between local and national administrations and their public. Few if any studies have investigated the factors that might contribute to the establishment of trusting relationship between city councils and citizens. This paper examines the relative importance and significance of three types of information communication technologies (ICTs) towards the use of e-government and the development of civic engagement. We conduct an empirical investigation of 179 Spanish official town websites (web sites in the municipalities). The research findings suggest that implementing ICT not only involves a step towards an increase in the use of e-government services by people, but also provides numerous opportunities for their civic engagement. The main conclusion of this study is that although ICT can leverage the adoption of e-government, it cannot create alone engagement with traditional activities of the local government. What is missing from this relationship is a mediating variable (adoption of e-government by government officers), which in turn can greatly help to better understand how ICT impacts relationships between governments and their citizens. 相似文献
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As network analysis methods prevail, more metrics are applied to co-word networks to reveal hot topics in a field. However, few studies have examined the relationships among these metrics. To bridge this gap, this study explores the relationships among different ranking metrics, including one frequency-based and six network-based metrics, in order to understand the impact of network structural features on ranking themes on co-word networks. We collected bibliographic data from three disciplines from Web of Science (WoS), and generated 40 simulation networks following the preferential attachment assumption. Correlation analysis on the empirical and simulated networks shows strong relationships among the metrics. Their relationships are consistent across disciplines. The metrics can be categorized into three groups according to the strength of their correlations, where Degree Centrality, H-index, and Coreness are in one group, Betweenness Centrality, Clustering Coefficient, and frequency in another, and Weighted PageRank by itself. Regression analysis on the simulation networks reveals that network topology properties, such as connectivity, sparsity, and aggregation, influence the relationships among selected metrics. In addition, when comparing the top keywords ranked by the metrics in the three disciplines, we found the metrics exhibit different discriminative capacity. Coreness and H-index may be better suited for categorizing keywords rather than ranking keywords. Findings from this study contribute to a better understanding of the relationships among different metrics and provide guidance for using them effectively in different contexts. 相似文献
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旅游突发事件中的网络舆情预警研究 总被引：1，自引：0，他引：1
网络环境下的旅游突发事件舆情预警是伴随着Internet和移动互联网在旅游业的广泛应用而产生的新问题,突发事件与网络舆情的交互更增加了危机预警的难度,建立科学高效的舆情预警机制势在必行。从分析旅游突发事件中的网络舆情预警需求出发,构建了涵盖旅游突发事件网络舆情管理全流程的预警机制,并从预警理念、组织体系和技术支持3个方面探讨了保障预警机制高效运行的策略。 相似文献
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Chulmo KooAuthor VitaeYulia WatiAuthor Vitae Jason J. JungAuthor Vitae 《International Journal of Information Management》2011,31(5):445-459
Because of the increasing significance of social communication technologies within an organization, they have become a new form of information processing, resulting in business process transitions and increased benefits. By applying media richness theory and social theories, this study investigated how social communication technologies (SCTs) can be used by an employee to fit his/her task characteristics. Additionally, it also examined how the employee's social relationships moderated media usage in the current job environment and how this usage influenced the task performance. Five media were selected in this study (telephone, video conferencing, email, instant messaging, and blog). Using a hierarchical regression approach, we found that task characteristics were related to media usage, whereas social factors (social influence and social affinity) moderated the degree of the relationships. A few particular media and technologies seemed to perform well, however these are influenced by the social aspects. Moreover, the usage of social technologies results in positive task performance. The performance of a few specific technologies demonstrated binding effects (email performance was associated with instant messenger performance). In summary, we found that the usage of SCTs is instrumentally determined by the interaction between the task and social relationships. 相似文献
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Abstract Individuals who have ready access to three new communication media— email, vmail, and fax—may elect to use only one medium, or two or more in combination. Users make choices based on evaluations of the utility of each medium for their communication tasks (a function of the types of work they perform). Individuals may assess technological characteristics to evaluate the technological utility of each medium. However, since communication media require multiple users, individuals also may be expected to assess characteristics of the user community to evaluate the social utility of each medium. Social utility may be influenced by people's perceptions of the existence of a critical mass of media users, and by the social influence of their peers and superiors. This study finds that perceptions of the technological and social utility of email, vmail, and fax are relatively independent of the types of work people perform. Social utility explains media usage somewhat better than technological utility, except in the case of email. Thus, the concept of social utility should be given more attention in future investigations of media choice. 相似文献
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[研究目的]当今舆论场尤其是互联网舆论场中难以进行有效、冷静的对话和沟通,互联网媒介及群体传播是这种情况出现的重要原因。[研究方法]基于媒介环境学和媒介学的基本思路,并结合“中美贸易摩擦”等舆论案例分析,研究互联网媒介特性及其传播组织形态的群体化转向,以及由此带来合法化认同向抗拒性认同的变化及其影响。[研究结论]研究发现,互联网媒介特性构建了“无组织的组织力量”的群体传播,互联网群体之间的认同是以抗拒性认同为主,而与传统群体相比互联网群体中个体情绪、意见、观点等情感化因素成为了其主要认同机制,情感认同和情绪表达成为互联网舆论场域中的主要特点。 相似文献
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我国网络舆情热点话题发现研究综述 总被引：1，自引：0，他引：1
随着互联网的快速发展，网络舆情对社会的影响不容忽视。若能够及时从海量数据中发现热点话题，追踪热点话题演变以及预测话题的倾向，对于帮助相关部门及时有效地对其引导和控制具有较大意义。本文通过对我国网络舆情热点话题发现的相关文献进行收集、整理及分析，归纳其中的主要研究思想和方法，同时发现存在的不足，并提出进一步的展望，以期对后来研究者提供参考。 相似文献
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[目的]通过研究当下网络环境的具体情境,利用概率分析的方式判断具体舆情所属的案例类型,从而为网络舆情危机响应决策提供依据。[方法]使用贝叶斯网络模型作为分析方法,构建网络舆情案例匹配的指标体系和案例匹配模型。[结果]通过48个网络舆情危机中的随机43个事件作为训练数据,构建贝叶斯网络模型,使用剩余5个网络舆情危机事件作为测试组,经检验测试样本案例匹配结果与事实相符。[结论]本文通过构建网络舆情案例匹配的相关指标体系和贝叶斯网络模型,为对网络舆情进行分型,从而为舆情危机响应提供了决策依据。 相似文献
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This paper investigates the research question if senders of large amounts of irrelevant or unsolicited information – commonly called “spammers” – distort the network structure of social networks. Two large social networks are analyzed, the first extracted from the Twitter discourse about a big telecommunication company, and the second obtained from three years of email communication of 200 managers working for a large multinational company. This work compares network robustness and the stability of centrality and interaction metrics, as well as the use of language, after removing spammers and the most and least connected nodes. The results show that spammers do not significantly alter the structure of the information-carrying network, for most of the social indicators. The authors additionally investigate the correlation between e-mail subject line and content by tracking language sentiment, emotionality, and complexity, addressing the cases where collecting email bodies is not permitted for privacy reasons. The findings extend the research about robustness and stability of social networks metrics, after the application of graph simplification strategies. The results have practical implication for network analysts and for those company managers who rely on network analytics (applied to company emails and social media data) to support their decision-making processes. 相似文献