[MathDiss Database Tools]
Decompression
The MathDiss Database provides compressed verision of the original files of the dissertations, usually zipped (.zip) or gnu-zipped (.gz). To use these files, they have to be expanded. An excellent free expansion utility is StuffIt Expander™ available from Aladdin Systems, Inc..
There is also MindExpander from MindVision, this is smaller and a single programm file.
Another free utility comes from Info-Zip, WiZ for Windows amd MacZip for Mac OS. These will not only decompress files, but allows also for recompression.
Country Code
In our database we use the ISO 3166-1 code to map the country of the described thematic server, available at the ISO 3166 Maintenance Agency. Two-letter alphabetic codes are used.
Language Code
In our database we use the ISO 639-1 code (from Unicode, Inc.) to map the language(s) of the WWW documents . Two-letter lower-case characters are used.
Mime Types
In our database we use the mime types administered by the IANA to describe the type of data obtainable at a particular source. For the user this gives a hint, whiich applications will be needed to use this material.
Keyword List (coming soon)
This is a list of all keywords used in the MathDiss Database. The keywords are searchable through MathDiss Database search options.
Subject Catalog
The Subject Catalog arranges records according to the 200 Mathematics Subject Classification used by Math Review and Zentralblatt der Mathematik.
MathDiss Database Metadata Concept
The concept of metadata used in the SSG-FI project is based on Dublin Core and complemented by a few addiditional elements, e.g. administrative data have been added. Internal categories are used for database administration only and are not displayed in the SSG-FI system.
The template used to catalog and describe resources is identical in the different academic disciplines involved, with one exception: the primary subject classification scheme. In the MathDiss Database the internationally accepted MSC is used. Due to the lack of a similarly accepted universal classification scheme in the other subjects, a local classification system (GOK) is used as a primary scheme, and internationally or nationally known schemes (DDC and BK) are used as a secondary classification.
Help
This is a help file explaining the use of the Subject Catalog, Source Type Catalog, and Search Engine. A general structural overview and tips & tricks are also provided.

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