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Abstract

PhysNet (www.physnet.net) is a portal for Physics run since 1995 and continuously being developed; it today uses an OWLLite ontology and mySQL database for storing triples with the facts, such as department information, postal addresses, GPS coordinates, URLs of publication repositories, etc. The article focuses on the structure and the development of the underlying ontology; it also gives a detailed overview of an online web-based editorial tool, to maintain the facts database.

Type

a

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Abstract

Many subject specific portals were built during the last year. Most of these are simple user-interfaces to databases of subject specific information added with several lists of links. This centralised type of portal often looks fine with its consistent facing but is hard to keep up to date and high priced to maintain. Users expect a service be malntained and available 24 hours, 365 days for at least 10 years and this all free of charge. On the one hand, it seams to be impossible to set up a service matching all this demands, an the other hand, many institutions offer information and services which could be parts of a portal, which are maintained frequently and paid by public via these institutions. The idea is, to collect the existing information and present it in a structured and consistent way. This idea matches in an excellent way with the way knowledge is produced in Physics. Physicists work all over the world often an different continents an the same topic, knowing each others work only from their publications, conferences and online-communication. Information in Physics is published in quite different ways, by journal articles, which can be reviewed, sometimes by peer, or pre-prints. Many information is available in non-textual genres like software sources or datasets or mathematical formula. Distributed Portals make use of the existing information an the web. In the early days of the web, the very popular link-lists where a kind of portal, linking to (all) pages with information an the specific topic. Indeed, these link lists had many properties of modern portals, offering information in a structured and selected way. But they did not offer the information under a common layout (desktop) and did not offer user-specific views onto the information. Modern distributed portals combine the advantages of centralised portals (high information structure, common layout, easy navigation through all the information) with the possibilities of distributed portals (up to date information, low budget implementation, good knowledge coverage).

Source

Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase

Type

a

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Abstract

PhysNet offers online services that enable a physicist to keep in touch with the worldwide physics community and to receive all information he or she may need. In addition to being of great value to physicists, these services are practical examples of the use of modern methods of digital libraries, in particular the use of metadata harvesting. One service is PhysDoc. This consists of a Harvest-based online information broker- and gatherer-network, which harvests information from the local web-servers of professional physics institutions worldwide (mostly in Europe and USA so far). PhysDoc focuses on scientific information posted by the individual scientist at his local server, such as documents, publications, reports, publication lists, and lists of links to documents. All rights are reserved for the authors who are responsible for the content and quality of their documents. PhysDis is an analogous service but specifically for university theses, with their dual requirements of examination work and publication. The strategy is to select high quality sites containing metadata. We report here on the present status of PhysNet, our experience in operating it, and the development of its usage. To continuously involve authors, research groups, and national societies is considered crucial for a future stable service.

Type

a