When one designates net publications or on-line publications electronic publications, which are not offered on a physical data medium, but on-line over Internet.
Examples of net publications are E-Mail news type character, electronic magazines, Wikis, Weblogs (Internet diary), E-Books or also data bases and generally web pages. It may concern itself however not pure accumulations of files, but must around logical and consistent units, itself with meta data (author, title, publication date" ) to describe leave. Of it can independent being designated also different in the Internet available data than published.
Documents are usually published in the Internet in form of a pdf file.
Due to the evaporability of the medium and the fast technical change the problem of long-term archiving is unresolved. Two categories can fundamental be differentiated by solutions. With the one the net networks are put down actively of the publishers in archives (e.g. the German library), while with the other one the net and/or parts of it is automated archived by software (e.g. to Internet archives, see http://www.archive.org).
Since with the URIs resources of the net publications are identified, not however the net publication, and which cannot be guaranteed long-term existence of a URI in generally, the challenge the net publication (clearly and durably) places itself to identify. Constructing on the ISBN system of of the classical book publications thereby the primarily commercially used digitally Object Identifier (DOI) has themselves as well as the not-commercial Society Reference Catalogue (SRef) established, in the same way the PURL and the URN as further "persistent more identifier".
A further problem, which places itself with net publications more strongly than with conventional publications, is that their publishers and author do not let themselves be determined always simply. Commercial web pages must exhibit therefore for example an imprint. During private publications the author often anonymous or quasi-anonymous (e.g. Salam Pax) would like to remain or this concerns joint works such as articles of the Wikipedia.
For the use of commercial net publications, as for example electronic magazines and data bases a user account (account) is usually needed, over which resulting costs are accounted for. The access control can be achieved by means of password and the restriction of IP addresses.
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