Research related activities
Preben have also been at the Program Committee for the ACM SIGIR 2010-2013, 2005-2008 ACM CHI 2009-10, ACM GROUP 2005, ACM CSCW 2008, CoLIS 2005-2007, TPDL 2011-12 and ECDL conferences during 2000-01, 2007, 2009-2010 and ECIR 2007-2013 and IIiX 2006-2012. ICADL 2008-2013. SIRTEL 2008, IRF 2010 (Patent), ISCRAM 2009-2010 (Crisis Management).
He has also worked as reviewer for the journals JASIST, International Journal on Digital Libraries (IJDL), Interacting with Computers, Journal of Information Processing & Management (IPM), Journal of Digital Information (JoDI) and ACM Transactions on Information Systems.
Se details below.
Preben has organized 4 international workshops:
-  Collaborative Information Seeking – Consolidating the Past, Creating the Future. Workshop organised at the CSCW Conference, February 24, 2013, San Antonio, USA. Co-organisers: Shirag Shah and Rob Capra.
-  Collaborative Information Seeking – Bridging the Gap between Theory and Practice at the ASIST Annual Meeting, October, 2011, New Orleans. Co-organisers: Shirag Shah and Rob Capra.
-  Workshop on “The Role of Digital Libraries in Work Task Performance by Professionals”. May 2004.Dubrovnic, Croatia. Co-organiser: Katriina Byström. http://www.ffos.hr/lida/lida2004/program.php
-  8th DELOS Workshop on "User Interfaces in Digital Libraries", 21-23 October 1998, Stockholm, Sweden. Workshop organized together with Jussi Karlgren, SICS. ERCIM Workshop Proceedings - No. 99-W001. http://www.sics.se/diglib/delos8ws/index.html
and 2 industrial workshops.
-  ENCORE workshop. Final industrial project workshop. IFS AB, Linköping, Sweden Presentation for IFS AB. User requirements of software engineers for collaboration.
-  INFO Project. Final industrial project workshop, FMV, Stockholm. Presentation of Design prototype (Mock-up) for FMV, Generic Systems AB.
International Journal on Digital Libraries (IJDL)
- International Journal on Digital Libraries - IJDL (2011)
- JASIST reviewing committee (Since 2005 -)
- Journal of Digital Information - JDIM (2008 - )
- Journal of Information Processing & Management (2005 -
- Invited as reviewer for Interacting with Computers - IwC (2006-2007)
- Journal Committee member of the ACM-TALIP (Transaction of Asian Language Information Processing, Special Issue) 2004.
- SIGIR Conference - Member of the PC (2004-2008, 2010-2013) Review of Paper, Poster and Demo.
- ECIR - Member of PC (2007-2013)
- IRF - Member of PC (2010, 2013)
Digital Library - DL Conferences and workshops
- ICDK - Advicory Board (2011) International Conference on Digital Libraries and Knowledge Organization
- TPDL - Member of PC (2011-12)
- ECDL - Member of PC (2000-2001, 2007, 2009-2010)
- ECDL - Co-Chair for Tutorials (2000)
- ICADL - Member of PC (2008-2013)
- ICDL - Memeber of PC (2010)
- Member of the PC of the DELOS Workshop on the Evaluation of Digital Libraries, Padova, Italy, October 4-5, 2004
- Workshop Organizer of LIDA 2004 Workshop “The role of digital libraries in work task performance by professionals” in close cooperation at the LIDA 2004 Conference.
Organisers: Preben Hansen and Katriina Byström. Dubrovnik, May 25-29, (2004)
- JCDL - Member of PC for the Workshop on "Cross Cultural Usability for Digital Libraries" (2003)
- Member of PC for the JCDL 2003 Workshop “Cross Cultural Usability for Digital Libraries”, Houston, TX, (2003)
- Member of PC for the 1st DELOS Network of Excellence Workshop on "Information Seeking, Searching and Querying in Digital Libraries", Zurich, Switzerland, (2000).
Patent Related Conferences and Workshops
- Member of PC for the Workshop on Patent Corpus Processing during the ACL2003 Conference, Sapporo, Japan.(2003)
Information Seeking and related Conferences
- IIiX - Member of PC (2006-2010)
- CHI - Member of PC (Works-in-Progress and Student Research Competition (2009-2010)
- ISCRAM - Member of PC (2009-2010)
- CSCW - Memeber of PC (2008)
- ICDIM - Member of PC (2006-2008)
- SIRTEL (Workshop on Social Information Retrieval for Technology-Enhanced Learning - Member of PC (2008)
- Member of PC - ASIS&T 2008 Research Symposium of the SIG on Human-Computer Interaction: HCI in Information Intensive Environments
- CoLIS 2005 - Member of the PC (2005, 2007)
- GROUP - Member of PC (2005)
Other Conferences and Workshops
- Member of the PC of the International conference Information use in information society, Bratislava, Slovakia (2006).
- Member of PC for the Workshop “Web-based Collaboratories (Wbc-2003) - from centres without walls to virtual communities of practice” (2003).
- Invitation. EU Workshop "Digital libraries research for access to cultural and scientific resources" organized by the The Cultural Heritage Applications Unit of DG Information Society (DG INFSO/D2/BS D(0)) (2000)
Resersch-Related Working Groups and International Research groups
- Member of the FIRE Research Group (Finnish Information Retrieval Expert Group) University of Tampere (2000 - )
- Member of the IriX Research Group (Research Group on Information Retrieval in Context) University of Tampere (2000 - )
- Member of the ASIS - European Chapter. ASIS-EC Representative for Swedisn (2000 - 2009)
- NetCor (2008-2009) - Swedish national research network for crisis management
- External reviewer for National Science Foundation NSF (USA) proposals.
Decision, Risk, and Management Sciences Program (2002).
- Member of the FID/II Editorial Board for the FID Knowledge Forum. (1996 - 1999)
- Member of the the IEEE Digital Library Task Force.(1997 - 1998)
- Member of the ERCIM DELOS Working Group.(1996-1997)
- Member of the ERCIM Digital Library Initiative (1996).
- Member of the ERCIM W4G - World Wide Web Working Group (1995-1996).