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Java library for the QUDT ontology
There is a newer version: 1.5.0

 
  
    
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    reference quantity
    
  
  
    
    dimension inverse
    
    
    
    
  
  
    A dimension vector is an association between a quantity kind and a rational number. The quantity kind serves as the basis vector in an abstract vector space, and the rational number is the vector magnitude. The abstract vector space is determined by the chosen set of base quantity kinds for a quantity system.
    
    
    
    
    Dimension Vector
    
  
  
    
    
    
  
  
    
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    QUDT, or the 'Quantity, Unit, Dimension and Types' ontology defines the base classes properties, and restrictions used for modeling physical quantities, units of measure, and their dimensions in various measurement systems. In physics and science, dimensional analysis is a tool to find or check relations among physical quantities by using their dimensions. The dimension of a physical quantity is the combination of the basic physical dimensions (usually mass, length, time, electric charge, and temperature) which describe it; for example, speed has the dimension length / time, and may be measured in meters per second, miles per hour, or other units.
    
    QUDT Dimension Ontology
    
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    QUDT
    Ralph Hodgson
    
    All disciplines
    
    James E. Masters
    
    David Price
    dimension
    Science, Medicine and Engineering
    $Id: OSG_dimension-(v1.1).ttl 4988 2011-06-01 20:34:19Z RalphHodgson $
    
    The QUDT Ontologies are issued under a Creative Commons Attribution Share Alike 3.0 United States License. Attribution should be made to NASA Ames Research Center and TopQuadrant, Inc.
    Irene Polikoff
    
    Quantities, Units, and Dimensions
    
    
    $LastChangedDate: 2011-06-01 13:34:19 -0700 (Wed, 01 Jun 2011) $
    2010-12-30T11:17:52
    
    
    QUDT Dimension Ontology Version 1.1
    Basic treatment of quantities and units. No dimensional treatment in this graph.
    
    
    
    
    
    http://qudt.org/schema/dimension
    
    The intent of the QUDT Dimensions Ontology is to provide an OWL Schema for dimensional specificaiton and analysis of units of measure.
    
    
    
  
  
    
    
    
  
  
    dimension vector
    
  
  
    
    
    
  
  
    A dimension is a relationship between a quantity system, a quantity kind of that system, and one or more dimension vectors. There is one dimension vector for each of the system's base quantity kinds. The vector's magnitude determines the exponent of the base dimension for the referenced quantity kind.
    
    
    
    
    
    Dimension
    
  
  
    
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