Guest Editors' Introduction: Social Networks and Social Networking

This issue's theme includes three articles on research activities that have drawn on ideas from social networking to drive innovative designs. The focus covers the design, development, and study of social technologies at the level of individuals, groups, and organizations. Although the tools described here are all intended for individuals, each article highlights how new technologies and technical competencies will further push our understanding of human social-networking drives and desires.     

中国社交类应用用户行为研究

"社交类应用"泛指具有社交功能的互联网应用,包括社交网站、微博、即时通信工具、博客、论坛等,本文重点研究社交网站、微博以及即时通信工具。在社交类应用用户特征及重叠情况、社交类应用用户变化以及各社交类应用用户使用行为差异的研究基础上,分析了社交类应用对新闻资讯类网站、网络购物、手机在线游戏等相关产业的影响,并对社交类应用的发展提出了相关建议。     

创造企业社会责任(CSR)新价值——富士施乐借CSR亚洲峰会倡导企业价值链责任

正近日,备受关注的企业社会责任亚洲峰会2012(CSR Asia Summit 2012)在北京隆重召开,富士施乐作为赞助商参加了此次峰会。会上,富士施乐CSR部门经理渡边女士就富士施乐贯穿于整个价值链的企     

Social Media Based Transportation Research: the State of the Work and the Networking

Recently, there has been an increased interest in the use of social media data as important traffic information sources. In this paper, we review social media based transportation research with social network analysis methods.We summarize main research topics in this field, and report collaboration patterns at levels of researchers, institutions, and countries, respectively. Finally, some future research directions are identified.      

社交网络中FN算法结果的后处理研究

在复杂网络问题的研究中,众多聚类算法的横向比较与改进研究方面的工作在近几年吸引了大量注意并得到深入研究.其中,基于模块度的算法被广泛应用,而模块度也作为评价聚类的一项指标.在这类算法中,基于模块度的快速Newman算法(Fast-Newman algorithm,FN)显得较为突出,许多相关的深入研究由此展开,但多数工作是基于算子改进、应用领域等方向展开的,而对于算法结果的研究工作则更多偏向于评价、测量和总结.该研究从FN算法的结果入手,对算法的分类结果进行数据的后处理.在研究中发现了FN算法中常见的错误类型,并提出了3种不同的解决方案,使得最终结果更加符合实际,达到更好的聚类效果.在部分案例中准确率可提高至100％.     

Understanding How People Select Social Networking Services: Media Trait,Social Influences and Situational Factors

Social networking services (SNSs) have become very popular, and many Internet users use two or more SNSs. However, little research has been done to understand how and when users select multiple SNSs in series. This study investigates Internet users’ SNS selection behavior in daily life. We adopt the notion of media repertoire to explore how Internet users select SNSs in combination, and we adopt uses and gratifications theory to identify the values that drive these users to choose specific SNSs. We interviewed 40 Taiwanese people to explore the media traits, situational factors and social influences that affect users’ SNS selection behavior. The findings of this study can help SNS companies to improve SNS functions, and help marketers devise marketing strategies for target audiences and find suitable SNS platforms on which to communicate with consumers.     

网络化社会媒体的传播及应用

介绍社会媒体的网络特性与信息传播特点和社会媒体的传播机制．以及当前主要的研究课题,其中包括社会媒体的传播方法与模型、传播影响力、主题模型发现和情感倾向性分析等,简单介绍社会媒体信息传播在虚拟社会管理和社会媒体服务中的应用前景。     

Publicly Private and Privately Public: Social Networking on YouTube

YouTube is a public video-sharing website where people can experience varying degrees of engagement with videos, ranging from casual viewing to sharing videos in order to maintain social relationships. Based on a one-year ethnographic project, this article analyzes how YouTube participants developed and maintained social networks by manipulating physical and interpretive access to their videos. The analysis reveals how circulating and sharing videos reflects different social relationships among youth. It also identifies varying degrees of "publicness" in video sharing. Some participants exhibited "publicly private" behavior, in which video makers' identities were revealed, but content was relatively private because it was not widely accessed. In contrast, "privately public" behavior involved sharing widely accessible content with many viewers, while limiting access to detailed information about video producers' identities.     

Creating Assemblies in Public Environments: Social Interaction,Interactive Exhibits and CSCW

This paper examines the use of a series of three low tech interactive assemblies that have been exhibited by the authors in a range of fairs, expositions and galleries. The paper does not present novel technical developments, but rather uses the low tech assemblies to help scope out the design space for CSCW in museums and galleries and to investigate the ways in which people collaboratively encounter and explore technological exhibits in museums and galleries. The bulk of the paper focuses on the analysis of the use of one interactive installation that was exhibited at the Sculpture, Objects and Functional Art (SOFA) Exposition in Chicago, USA. The study uses audio–visual recordings of interaction with and around the work to consider how people, in and through their interaction with others, make sense of an assembly of traditional objects and video technologies. The analysis focuses on the organised practices of assembly and how assembling the relationship between different parts of the work is interactionally accomplished. The analysis is then used to develop a series of design sensitivities to inform the development of technological assemblies to engender informal interaction and sociability in museums and galleries.     

Cultural Entrepreneurship: The Impact of Social Networking on Success

Because of the complex structures characteristic of the arts sector and creative industries, it is often thought that external network ties of leading managers are critical to the success of their cultural enterprises. Based on research into entrepreneurship and promoters' activity, this study examines the influence of social network relationships on the success of cultural establishments in Germany. The regression analysis of data from 121 private arts and culture ventures presented here clearly shows that founders as well as managers can overcome numerous barriers through their engagement and activity in social networks, and thereby exercise to a significant degree a positive influence on establishing their enterprise. As expected, this effect is even stronger in cases of low sponsorship of cultural activities on the part of cities and communities. Contrary to expectations, the positive effect of intensive networking activities is not increased by a high intensity of competition; it is worth noting that the effect is strongest in situations of low competitive pressure. The results of this study demonstrate that successful networking expertise, as postulated by research into promoters' activity, is of great importance for overcoming significant barriers in the cultural sector, but that its effectiveness also has limits.     

软件定义网络中的异常流量检测研究进展

软件定义网络(software defined networking,简称SDN)是一种新型的网络架构.SDN将控制层从数据层分离并开放网络接口,以实现网络集中控制并提高网络的可扩展性和编程性.但是SDN也面临诸多的网络安全威胁.异常流量检测技术可以保护网络安全,防御恶意流量攻击.对SDN异常流量检测进行了全面的研究,归纳了数据平面和控制平面可能遭受到的网络攻击;介绍并分析了位于应用平面、控制平面和中间平台的异常流量检测框架;探讨了异常流量识别机制、负载均衡机制、异常流量追溯机制和异常缓解机制;最后指明SDN异常流量检测在未来工作中的研究方向.     

Social Networking Sites: Their Users and Social Implications — A Longitudinal Study

The rapid adoption of social networking sites (SNSs) raises important questions about the social implications of such usage. Drawing on unique longitudinal data, surveying a representative sample of Norwegian online users (N = 2,000, age 15–75 years) in 3 annual waves (2008, 2009, and 2010), this study found a significantly higher score among SNS users in comparison to nonusers in 3 out of 4 social capital dimensions: face‐to‐face interactions, number of acquaintances, and bridging capital. However, SNS‐users, and in particular males, reported more loneliness than nonusers. Furthermore, cluster analyses identified 5 distinct types of SNS users: Sporadics, Lurkers, Socializers, Debaters, and Advanced. Results indicate that Socializers report higher levels of social capital compared to other user types.     

基于Android 平台与LBS 的移动社交系统的研究与设计

随着人们的生活水平的提高,人们的社交圈子和活动范围越来越广,人们对跨地域环境的不熟悉也造成了出 行和活动的不便。如何能随时随地了解当前位置信息和留下记录成为了人们关心的话题。针对这样的需求,本文设计了一个 基于Android 和LBS 技术的系统,重点介绍了该系统的需求分析、功能结构、系统设计及数据库设计。     

Tele‐Cocooning: Mobile Texting and Social Scope

The present study examines the tele‐cocooning hypothesis in the context of general trust using a nationally representative survey of Japanese youth. We find that although frequency of texting is positively correlated with general trust, this correlation is spuriously caused by how heavy mobile texters interpret the words “most people” in the general trust measurement. Heavy users assume that “most people” only refers to friends, family, and others going to the same school. When the effect of the “most people” assumption is controlled, the positive association between texting and general trust disappears. Further exploration of the data shows that heavy texting nevertheless has negative implications for social tolerance and social caution, both of which are theoretically proximate to general trust.     

大规模层次分类问题研究及其进展

随着信息技术的发展,互联网数据急剧增长.为了有效地组织和管理这些海量网页信息,通常按照一个大规模的概念或主题类别层次对网络上的信息进行分类,以更好地搜索和访问这些网络资源.在这个过程中,大规模层次分类问题研究如何将互联网上的网页文档准确地分到类别层次中的各个类别.该文对大规模层次分类问题进行了分析.首先,给出了大规模层次分类问题的定义,分析了大规模层次分类问题的求解策略;其次,对大规模层次分类问题的求解方法加以分类,在分类基础上,介绍了各种典型的求解方法并进行了对比;最后总结了各种大规模层次分类问题求解方法并指出了未来的研究方向.     

Public Discourse, Community Concerns, and Civic Engagement: Exploring Black Social Networking Traditions on BlackPlanet.com

This study explores community life on a black social network site, BlackPlanet, to see whether and how participants engage in public discussions; if these discussions center on issues considered to be critical to the black community; and if so, the extent to which participants' online networks are used to foster some level of civic engagement. Participation analysis, content analysis, and a thematic analysis were used to analyze public discussions on the site's community forums. The findings show that participants are deeply committed to ongoing discussions about black community issues. However, none of these discussions moved beyond a discursive level of civic engagement, suggesting that the potential for mobilization through social networking online has not yet been realized, despite the traditional orientation to community service among blacks in America.     

超级小型计算机——微机通信平台的研究,设计,实现与入网

在已有局域网的基础上，为进一步共享ＰＲＩＭＥ小型机的大容量磁盘，磁带机、宽行打印机等外部设备，实现ＰＲＩＭＥ文件在网络中的传输，研究了将ＰＲＩＭＥ机（无网卡）并入局域网方法，设计了小型机－－微机通信平台，详细论述了通信平台的设计上实现过程，并给出了在这一平台上实现面向ＰＲＩＭＥ用户的“电子教室”系统的一个例子。     

Analyzing settings for social identity management on Social Networking Sites: Classification,current state,and proposed developments

The rising prevalence of Social Networking Sites (SNS) and their usage in multiple contexts poses new privacy challenges and increasingly prompts users to manage their online identity. To address privacy threats stemming from interacting with other users on SNS, effective Social Identity Management (SIdM) is a key requirement. It refers to the deliberate and targeted disclosure of personal attribute values to a subset of one's contacts or other users on the SNS. Protection against other entities such as the site operator itself or advertisers and application programmers is not covered by SIdM, but could be incorporated in further refinement steps. Features and settings to perform SIdM have been proposed and subsequently implemented partly by some SNS. Yet, these are often isolated solutions that lack integration into a reference framework that states the requirements for successfully managing one's identity. In this article, such a reference framework of existing and desired SIdM settings is derived from identity theory, literature analysis, and existing SNS. Based thereupon, we examine the SIdM capabilities of prevalent SNS and highlight possible improvements. Lastly, we reason about developing a metric to objectively compare the capability of SNS in regards to their support for SIdM.