distributed portals for physics
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CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de
the physics departments and documents network
Distributed Portals for Physics
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 2
What are Distributed Portals? Knowledge in Physics is produced spread all over
the world, even away form earth. Information is published in a distributed way
- Institutional Webserver- Online Journals- Print-only Journals
Information is available in different genres- Refereed articles- Peer-reviewed online-publications- Software- Datasets
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 3
What are Distributed Portals? Portals collect existing information form
different sources Portals present information in a common
desktop- Separation of content and layout
Distributed Portals- Collect existing content from distributed sources
(web-server)- Extract content from layout
• Meta-information required
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 4
Distributed Workforce Distributed Content
- Biggest example is the Web...
Distributed Workforce- Much more complicate
• Quality-problem• Problem of continuity• Problem of politics and interests
- Charter• Define common goals
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 5
Distributed vs. Centralised Centralised
- High information structure- Common layout- Easy navigation through the information
Distributed- Up to date information- Low budget implementation- Good information coverage
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 6
Portal
Portal
Collector
Distributed Portals – a technical view Collecting module Content extractor Portal Mirror system
Source A Source B Source C
Content extractor
Portal
?
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 7
XML-Query
Distributed Search-Engines
Search-EngineA
Search-EngineB
Search-EngineC
Search-EngineD
Common Search
SINN-Project by DFN e.V.http://www.isn-oldenburg.de/projects/SINN/
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 8
Examples of Portals in Physics PhysNet (distributed portal) ProPhysik.de (centralised portal) Fachwelt-Physik (distributed portal)
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 9
PhysNet www.physics-network.org
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 10
PhysNet www.physics-network.org Over 5.300 links of Physics Departments and
Document-Collections Service maintained in 8 countries on 4
continents Web-Sites mirrored on 10 servers all over the
world Approx. 25.000 users every month 16 members ((inter)national Physical Societies)
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 11
ProPhysik.de
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 12
Fachwelt-Physik www.fachportal-physik.de
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 13
Fachwelt-Physik Bilingual: English and German Views:
- Mozilla-based browser- Print-out version- Text-only version- Robot-optimised version with metadata
Maintained at numerous sites
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 14
Future Focuses in this Field Development and implementation of
interfaces for distributed search-engines Development of new services Continuous maintenance of running portals
the physics departments and documents network
www.physics-network.org
CRIS2002, Kassel, 29-31 Aug 2002
Thomas Severiens, severiens@isn-oldenburg.de 15
Many thanks for your attention!
For additional information please visit
www.isn-oldenburg.de
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