This study intends to explore how social media or social networking sites (SNSs) such as Facebook can facilitate communication channels or create dialogue spaces in a language class. Social media is a form of participatory media, which broadly refers to the “collection of communication channels or mediums (primarily online and mobile) through which social networks originate and are sustained” (Flew 2008:109). Although the term social media is often used as a collective term for SNSs or as the core trademark of Web 2.0, Flew (2008:17) also distinguishes social media by calling it a “communications infrastructure” that allows for “participation, interactivity, collaborative learning and social networking”. Flew (2008) identifies various online sites including the online encyclopaedia Wikipedia and the online user-generated video site YouTube as well as various personalised web space sites such as MySpace, Facebook, Friendster and Bebo as participatory media. The study’s data collection was situated at Nelson Mandela Metropolitan University (NMMU) and investigated how social media can be used to facilitate dialogue between a tutor and BKI1120 Communication in English B students in a Higher Education (HE) context using qualitative methodology. This study compared the use of existing and more traditional or conventional classroom communication practices with those of SNSs as a communication channel, while focusing on social media application as a communication tool to create dialogue spaces that support teaching and learning practices. The research also attempted to identify alternative applications of social media for teaching and learning practices to inform researchers in the fields of HE and media. In the first data-collection phase, BKI1120 Communication in English B Public Management students were selected as the sample for the study. Seventeen students participated in the BKI1120 Facebook page created for the purpose of this study. In the second data-collection phase, a taped focus-group interview was conducted with eight BKI1120 Communication in English B students. The interview transcript was then analysed qualitatively for themes. The research findings showed that social media or SNSs such as Facebook can facilitate communication channels or create dialogue spaces in a language class, if it is managed effectively.

This study aimed to provide researchers in the development of media studies with research into understanding the star as the object of desire in a contemporary context, using Robert Pattinson as the star and The Twilight Saga, which made him famous, as an example of the effects that the use of social and online media have on audiences in terms of their perception and identification of a particular star. This study drew from literature and theories such as stardom, star as the object of desire, audience theory, fantasy, desire and escapism as well as theory on globalisation, the mass media and online and social media. Whilst social and online media have been in existence for a number of years, there is little research that has been performed in order to determine whether or not the use of social and online media directly affect users’ understanding and perception of certain stars and films. There has also been little research performed in order to gain an understanding of fantasy and desire, in terms of films and film stars, outside the constraints of the cinema. This study examined this notion, noting that The Twilight Saga has been successful production worldwide, in order to discover whether or not the use of social and online media perpetuates obsession in the fans and audience members. The first part of the study that was conducted, applied certain theories discussed and developed in the literature review, to Robert Pattinson and The Twilight Saga in order to obtain a better understanding of the star and the film series in terms of cinema, stardom, fantasy and escapism and online and social media. A comparative case study of six online articles, from prominent online sources featuring Pattinson, was then conducted in order to investigate Pattinson’s image and status in the online community. Finally, a content analysis of various online and social media platforms such as Facebook, Twitter and YouTube was performed in order to find out what type of information and imagery was being generated about Pattinson and the Saga as well as to investigate how fans and followers engaged with the different media channels and what kinds of comments they were making about the star and the Saga. It was found that Pattinson, the character he plays in the film series, Edward Cullen, and The Twilight Saga have a large presence on key social media platforms such as Facebook and Twitter, with a vast amount of followers and fans; Facebook and Twitter being the most popular and interactive media avenues. It was also found that Pattinson, Edward and The Twilight Saga, through the avid use of the social media tools, elicited and incited signs of obsession, fantasy and desire within an extensive amount of fans and followers, outside the constraints of the cinema

As people go about their lives, they form a variety of social relationships, such as family, friends, colleagues, and acquaintances, and these relationships differ in their strength, indicating the level of trust among these people. The trend in these relationships is for people to trust those who they have met in real life more than unfamiliar people whom they have only met online. In online social network sites the objective is to make it possible for users to post information and share albums, diaries, videos, and experiences with a list of contacts who are real-world friends and/or like-minded online friends. However, with the growth of online social services, the need for identifying trustworthy people has become a primary focus in order to protect users’ vast amounts of information from being misused by unreliable users. In this thesis, we introduce the Capacity- first algorithm for identifying a local group of trusted people within a network. In order to achieve the outlined goals, the algorithm adapts the Advogato trust metric by incorporating weighted social relationships. The Capacity-first algorithm determines all possible reliable users within the network of a targeted user and prevents malicious users from accessing their personal network. In order to evaluate our algorithm, we conduct experiments to measure its performance against other well-known baseline algorithms. The experimental results show that our algorithm’s performance is better than existing alternatives in finding all possible trustworthy users and blocking unreliable ones from violating users’ privacy.

The objective of this report was to gain a better understanding of the value that support networks provide to participants in the networks and to organisations that set up these networks. Used correctly, this understanding could enhance the success rate of organizations. The researcher’s objectives were to answer 4 research questions in order to determine the key attributes that render support networks effective. The research was conducted in 2 parts. (1) Seven subject matter experts on support networks were selected from independent network service providers and from an organization that promotes support networks to its employees. (2) A structured questionnaire was distributed to selected support networks comprising of approximately 185 participants altogether. One hundred and sixty two participants in the support networks selected, responded by completing the questionnaire. Various techniques were used to collect and analyse the data. The study found that there are key attributes that are necessary for a support network to achieve its purpose. It further found that the key attributes of a traditional family support network can exist in a corporate support network by allowing people to come together to discuss issues of common interest and challenges facing them as members of organisations. Copyright / Dissertation (MBA)--University of Pretoria, 2008. / Gordon Institute of Business Science (GIBS) / unrestricted

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This dissertation consists of three essays examining the important role of job connections, references, and word of mouth information in labor markets. The first essay examines the importance of job connections for internal migrants. In this chapter, I develop a theoretical model where labor market networks provide labor market information with less noise than information obtained in the formal market. This model predicts lower initial wages and greater wage growth after migration for migrants without contacts. I then use data from the National Longitudinal Study of Youth (NLSY) to examine whether migrants who used social connections when finding their first job assimilate faster in the new region. Consistent with the theoretical model, I find that migrants who did not use social connections take longer to assimilate in the new region. The second essay models how screening workers through social networks impacts labor mobility in markets with adverse selection. When there is asymmetric information in labor markets, worker mobility is constrained by adverse selection in the market for experienced workers. However, if workers can acquire references through their social networks then they can move more easily between jobs. In this chapter I develop a simple labor market model in which workers can learn the productivity of other workers through social interaction. I show that networks increase wages and mobility of high-productivity experienced workers; however, networks discourage workers from accepting jobs outside their job-contact network, because of adverse selection. The third essay in this dissertation examines the importance of social networks in labor markets when work is produced jointly. Most employers cite poor attitude and poor fit with firm culture as their greatest problems in recruiting employees, rating these factors more important than skill. This is easily explained when the output of the firm requires that workers engage in work together. In this essay, I explain why it might be rational for firms to hire through social networks even when worker skill is observed perfectly, if these workers are better able to do joint work with the firm s existing employees. / Ph. D.

published_or_final_version / Social Work and Social Administration / Doctoral / Doctor of Philosophy

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刁鵬飛. / 論文(哲學博士)--香港中文大學, 2007. / 參考文獻(p. 174-182). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in Chinese and English. / Lun wen (zhe xue bo shi)--Xianggang Zhong wen da xue, 2007. / Can kao wen xian (p. 174-182). / Diao Pengfei.