1. Newsgroups and the creation of Electronic Invisible Colleges Instituto Superior Técnico Portugal 15 March 2002 Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

2. Synopsis Webmetrics of Newsgroups Evolution and Speciation Social Structure and electronic Invisible Colleges Scientific Communication and Knowledge-Exchange Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Research Design

3. Digital Infrastructures for Science Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Communication among Scientists Collaboratory Environments Digital Libraries and Scientific Data transfer Scientific Electronic Publishing Physical Electronic Networks (infrastructure) Remote Control of Instruments

4. Research Design Research Question and Hypotheses Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Are Newsgroups and electronic networks extending Invisible Colleges into the digital age? Invisible Colleges - theoretical framework Newsgroups - empirical evidence

5. Research Design Research Question and Hypotheses Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Invisible Colleges - Theoretical framework Scientific Communication (Informal system) Collaboration (at various levels) Scientific Performance (Knowledge-creation)

6. Research Design Research Question and Hypotheses Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Electronic networks support the creation of social circles or clique-like structures over time. Electronic networks support the exchange of Scientific Knowledge Longitudinal Social Network Analysis Content Analysis of Newsgroup messages

7. Research Design Methodology Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK Newsgroups data-mining (NewsNetworks tool) Time-series data Analysis http://www.sussex.ac.uk/Users/prpb7/DigitalTools/DigitalToolsSCITEC.htm Content Analysis of Newsgroup messages Newsgroups individual messages (28 185) - comp.speech (Oct 1992 - Aug 1998) - comp.speech.research (May 1998 - Aug 2000) - comp.speech.users (May 1998 - Aug 2000) Social Network data Analysis

8. Webmetrics of Newsgroups Indicators for measuring these dynamic systems Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

9. Webmetrics of Newsgroups Different Authors and different Messages Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

10. Webmetrics of Newsgroups A taxonomy for Authors participation Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

11. Evolution and Speciation Diffusion like technologies? Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

12. Social Structure and Invisible Colleges Network analysis - Circles of collaboration Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

13. Social Structure and Invisible Colleges Subgroups, Cliques and Network Connectedness Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

14. Social Structure and Invisible Colleges Confirmation of Speciation model Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

15. Knowledge-Exchange Electronic Scientific Communication - Content Analysis Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

16. Knowledge-Exchange Classification of Information Exchange Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK

17. Conclusions Webmetric is useful but we need further social structure analysis Speciation model of Evolution Creation of electronic in-visible colleges Peer review is missing!? Validation of Knowledge in the future Seminário IST - 15 Março 2002, Caldas, Alex - SPRU, Univ.Sussex, UK