QUDT: ontologies from NASA for quantities, units, dimensions, and data types

[Douglas Burke]

In case people haven't seen this work:

   http://www.qudt.org/

 From this page:

"""
The QUDT Ontologies, and derived XML Vocabularies, are being developed 
by TopQuadrant and NASA as part of the NASA Exploration Initiatives 
Ontology Models (NExIOM) project, a Constellation Program initiative at 
the AMES Research Center (ARC). The goals of the QUDT ontology are twofold:

to provide a unified model of, measurable quantities, units for 
measuring different kinds of quantities, the numerical values of 
quantities in different units of measure and the data structures and 
data types used to store and manipulate these objects in software;
to populate the model with the instance data (quantities, units, 
quantity values, etc.) required to meet the life-cycle needs of the 
Constellation Program engineering community.
"""

There's also a presentation at

http://ontolog.cim3.net/file/work/UoM/UoM-standard-ontology_20090924/QUDT-overview--JamesMasters_20090924.pdf

and some info at

http://www.oegov.us/blog/?page_id=109

http://composing-the-semantic-web.blogspot.com/2009/08/units-ontology-with-spin-support.html

and the thread at

http://www.mail-archive.com/topbraid-composer-users@googlegroups.com/msg01960.html

Doug

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