background: social capital causes promoting community members’ participation level as set of norms among community systems. we aimed to determination between perceived social capital with relevant factors among health workers in medical and health network of rey city.   methods: this study was a cross sectional one which assessed determination between social capital and relevant factors among h...

Knowing which users are likely to churn (i.e. leave) a service enables service providers to offer retention incentives for users to remain. To date, the prediction of churners has been largely performed through the examination of users’ social network features; in order to see how churners and non-churners differ. In this paper we examine the social and lexical development of churners and non-c...

Available online 11 March 2009

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 the...

In this paper, we study the social network structure of an online discussion board within SeniorNet, an empathic online community for older people. We apply Social Network Analysis (SNA) to analyse the communication patterns and relationships between members of the discussion board. In addition to looking at the structure of the exchanged messages within the discussion board as a whole, we also...

The paper explores the inter-relation and differences between the concepts of occupational community, community of practice, online community and social network. It uses as a case study illustration the domain of UK university web site production and specifically a listserv for those involved in it. Different latent occupational communities are explored, and the potential for the listserv to he...