http://www.linkedmodel.org/schema/vaem#GMD_QUDT-SCHEMA
Individual 'vaem:QUDT Schema - Version 2.1'


dcterms:author
Ralph Hodgson
dcterms:contributor
James E. Masters
Daniel Mekonnen
Steve Ray
Jack Hodges
Simon Cox
David Price
dcterms:created
2011-04-20
dcterms:creator
Ralph Hodgson
dcterms:description

The QUDT, or "Quantity, Unit, Dimension and Type" schema defines the base classes properties, and restrictions used for modeling physical quantities, units of measure, and their dimensions in various measurement systems. The goal of the QUDT ontology is 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.

Except for unit prefixes, all units are specified in separate vocabularies. Descriptions are provided in both HTML and LaTeX formats. A quantity is a measure of an observable phenomenon, that, when associated with something, becomes a property of that thing; a particular object, event, or physical system.

A quantity has meaning in the context of a measurement (i.e. the thing measured, the measured value, the accuracy of measurement, etc.) whereas the underlying quantity kind is independent of any particular measurement. Thus, length is a quantity kind while the height of a rocket is a specific quantity of length; its magnitude that may be expressed in meters, feet, inches, etc. Or, as stated at Wikipedia, in the language of measurement, quantities are quantifiable aspects of the world, such as time, distance, velocity, mass, momentum, energy, and weight, and units are used to describe their measure. Many of these quantities are related to each other by various physical laws, and as a result the units of some of the quantities can be expressed as products (or ratios) of powers of other units (e.g., momentum is mass times velocity and velocity is measured in distance divided by time).

dcterms:modified
2019-10-04T12:30:51.335-07:00
dcterms:rights
The QUDT Ontologies are issued under a Creative Commons Attribution 4.0 International License (CC BY 4.0), available at https://creativecommons.org/licenses/by/4.0/. Attribution should be made to QUDT.org
dcterms:subject
QUDT
dcterms:title
QUDT Schema - Version 2.1
vaem:has graph role
vaem:Schema graph
vaem:has owner
vaem:QUDT
vaem:has steward
vaem:QUDT
vaem:intent
Specifies the schema for quantities, units and dimensions. Types are defined in other schemas.
vaem:is metadata for
QUDT Collection - Schemas - Version 2.1
vaem:latest published version
http://www.qudt.org/doc/2019/10/DOC_SCHEMA-QUDT-v2.1.html
vaem:logo
http://www.linkedmodel.org/lib/lm/images/logos/qudt_logo-300x110.png
vaem:name
qudt
vaem:namespace
http://qudt.org/schema/qudt/
vaem:namespace prefix
qudt
vaem:owner
qudt.org
vaem:previous published version
http://www.qudt.org/doc/2017/DOC_SCHEMA-QUDT-v2.0.html
vaem:revision
2.1
vaem:title
Quantities, Units, Dimensions and Types (QUDT) Schema - Version 2.1
vaem:turtle file URL
http://qudt.org/2.1/schema/qudt
vaem:uses non-imported resource
dcterms:rights
dcterms:contributor
dcterms:modified
dcterms:subject
prov:Attribution
dcterms:abstract
prov:was influenced by
skos:closeMatch
dcterms:description
dcterms:created
skos:exactMatch
dcterms:source
http://voag.linkedmodel.org/schema/voag#QUDT-Attribution
dcterms:title
dcterms:author
vaem:with attribution to
http://voag.linkedmodel.org/schema/voag#QUDT-Attribution
rdf:type
vaem:Graph Metadata
rdfs:isDefinedBy
QUDT Collection - Schemas - Version 2.1
QUDT Collection - Schemas - Version 2.1
rdfs:label
QUDT Schema - Version 2.1
owl:versionIRI
QUDT Collection - Schemas - Version 2.1
prov:was influenced by
http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf
https://books.google.com/books?id=pIlCAAAAIAAJ&dq=dimensional+analysis&hl=en
https://www.nist.gov/physical-measurement-laboratory/special-publication-811
http://unitsofmeasure.org/trac
http://www.bipm.org/en/publications/si-brochure
References

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