Abstract:To enhance users' social embedding within learning networks, we propose to establish ad hoc transient communities. These communities serve a particular goal, exist for a limited period of time and operate according to specific social exchange policies that foster knowledge sharing. This paper explores the theoretical underpinnings of such communities. To this end, it identifies five theories that explain how group interaction affects community behaviour and argues that these can shed light on the expected behaviour of ad hoc transient communities. The paper also examines three conditions which community policies should adhere to in order to foster knowledge sharing and it suggests that ad hoc transient communities should be designed accordingly. Finally, it analyses how ad hoc transient communities can be implemented in an Information Technology (IT) platform which is currently under development, the TenCompetence Personal Competence Manager (PCM), and discusses the current practices in communities outside the learning arena. Finally, the paper explores the avenues for further work.Keywords: ad hoc transient communities; learning networks; learner support; peer support; community building; policies for communities; knowledge sharing; community interaction; TENCompetence; learning technology.Reference to this paper should be made as follows: Berlanga, A.J., Sloep, P.B., Kester, L., Brouns, F., van Rosmalen, P. and Koper, R. (2008) Francis Brouns works as an Assistant Professor at the Educational Technology Expertise Centre, the OUNL. She was involved in the development of the IMS LD specification. Her main activities are in the development of innovative e-learning environments, with a focus on new educational and ICT technologies and standards and the application of new technologies to create efficient and effective learning environments.Peter van Rosmalen works as an Assistant Professor at the Educational Technology Expertise Centre, the OUNL. He has been active in educational technology since the early 1980s as an e-learning Consultant for the financial sector and for large industrial companies, both in Denmark and in the Netherlands. Additionally, he has been active as a Researcher and as a Project Manager for a large number of Dutch and European R&D projects on topics such as authoring tools for intelligent courseware, simulations, adaptive e-learning, language learning and knowledge management. His current research focuses on learner support, in particular, the application of language technologies.Professor Rob Koper, who is the Director General of the Educational Technology Expertise Centre, the OUNL, has published over 200 publications in scientific journals and books. He was responsible for the development of EML and edited its release as the open IMS LD specification. He leads or participates in a variety of EU-funded R&D projects, such as the TenCompetence integrated project. His research focus is on self-organised distributed learning networks for lifelong learning, including the use of inter...