Visualization of the evolution of collaboration and communication networks in wikis

Commons-based peer production communities can be analyzed with the help of social network analysis. However, since they are fluid organizations that change over time, the time dimension needs to be taken into account. In this work we present a web application, WikiChron networks, to facilitate the study of the evolution of wiki communities over time. The tool displays three different community networks depending on the pages considered for the interactions: articles, talk pages of articles or talk pages of users. The consideration of these three networks offer complementary views of the same community, while the time dimension makes possible to observe how the network structures changes over time and the changes in the network role experimented by some editors. We illustrate the usefulness of our tool analyzing the evolution of a wiki community in different moments and showing network structures that can be seen in other wiki communities. WikiChron networks is open source and is publicly available. We hope that it will stimulate research on the evolution of collaboration and communication in wiki communities

Software knowledge management using wikis : a needs and features analysis

Estágio realizado na StrongstepDocumento confidencial. Não pode ser disponibilizado para consultaTese de mestrado integrado. Engenharia Informática e Computação. Faculdade de Engenharia. Universidade do Porto. 201

A literature review of the use of Web 2.0 tools in Higher Education

This review focuses on the use of Web 2.0 tools in Higher Education. It provides a synthesis of the research literature in the field and a series of illustrative examples of how these tools are being used in learning and teaching. It draws out the perceived benefits that these new technologies appear to offer, and highlights some of the challenges and issues surrounding their use. The review forms the basis for a HE Academy funded project, ‘Peals in the Cloud’, which is exploring how Web 2.0 tools can be used to support evidence-based practices in learning and teaching. The project has also produced two in-depth case studies, which are reported elsewhere (Galley et al., 2010, Alevizou et al., 2010). The case studies focus on evaluation of a recently developed site for learning and teaching, Cloudworks, which harnesses Web 2.0 functionality to facilitate the sharing and discussion of educational practice. The case studies aim to explore to what extent the Web 2.0 affordances of the site are successfully promoting the sharing of ideas, as well as scholarly reflections, on learning and teaching

Website Blocked: Filtering Technology in Schools and School Libraries

This paper investigates the impact of filtering software in K-12 schools and school libraries. The Children\u27s Internet Protection Act, or CIPA, requires that public schools and school libraries use filtering technology in order to receive discounted rates on technology. As a result, nearly all public elementary and secondary schools today use filtering technology. While the provisions of CIPA narrowly define the content to be blocked, filters are often set to block much more than is required. Filtering technology is often ineffective, and many unobjectionable sites end up being blocked, including Web 2.0 sites and tools needed to educate students in a 21st century learning environment. Filtering software raises other issues as well, such as First Amendment implications, a possible digital divide between students that have unfiltered access to online content at home and those that do not, and the loss of opportunity to educate students on how to be good digital citizens. These issues should be acknowledged and addressed. There are many options available to librarians, educators, administrators, and other stakeholders that can increase students\u27 access to online information and educational tools while still protecting children from inappropriate online content and complying with the requirements of CIPA

Exploring the Relationship between Membership Turnover and Productivity in Online Communities

One of the more disruptive reforms associated with the modern Internet is the emergence of online communities working together on knowledge artefacts such as Wikipedia and OpenStreetMap. Recently it has become clear that these initiatives are vulnerable because of problems with membership turnover. This study presents a longitudinal analysis of 891 WikiProjects where we model the impact of member turnover and social capital losses on project productivity. By examining social capital losses we attempt to provide a more nuanced analysis of member turnover. In this context social capital is modelled from a social network perspective where the loss of more central members has more impact. We find that only a small proportion of WikiProjects are in a relatively healthy state with low levels of membership turnover and social capital losses. The results show that the relationship between social capital losses and project performance is U-shaped, and that member withdrawal has significant negative effect on project outcomes. The results also support the mediation of turnover rate and network density on the curvilinear relationship

Personal Communication Networks and Their Positive Effects on Online Collaboration and Outcome Quality on Wikipedia

Online collaborative projects have been utilized in a variety of ways over the past decade, such as bringing people together to build open source software or developing the world\u27s largest free encyclopedia. Personal communication networks as a feature do not exist in all collaborative projects. It is currently unclear if a designer\u27s decision to include a personal communication network in a collaborative project\u27s structure affects outcome quality. In this study, I investigated Wikipedia\u27s personal communication network and analyzed which Wikipedia editors are utilizing it and how they are connected to outcome quality. Evidence suggests that people who utilize these networks are more experienced in editing high quality articles and are more integrated in the community. Additionally, these individuals utilize the personal communication network for coordinating and perhaps mentoring editors who edit lower quality articles. The value of these networks is demonstrated by the characteristics of the users who use them. These findings indicate that designers of online collaborative projects can help improve the quality of outcomes in these projects by deciding to implement a personal communication network in their communities

The Business Value of Social Network Technologies: A Framework for Identifying Opportunities for Business Value and an Emerging Research Program

Although social network technologies have been the focus of many articles in the popular and business press, businesses remain unclear about their value. We use theory and data gathered from IT leaders to develop an initial model assessing the value of social network technologies in the business environment. Insights are given into when different features should be used to enhance existing business processes and to provide business value