skos:exactMatch 'Dimension' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A Dimension represents the [VIM] concept of 'quantity dimension' that is defined as 'expression of the dependence of a quantity on the base quantities of a system of quantities as a product of powers of factors corresponding to the base quantities, omitting any numerical factor.' For example in the ISQ the quantity dimension of 'force' is denoted by dim F = Lï¿½Mï¿½T^2, where 'F' is the symbol for 'force', and 'L', 'M', 'T' are the symbols for the ISQ base quantities 'length', 'mass' and 'time' respectively. The Dimension of any QuantityKind can be derived through the algorithm that is defined in C.5.3.20 with SystemOfQuantities. The actual Dimension for a given QuantityKind depends on the choice of baseQuantityKind specified in a SystemOfQuantities.
skos:exactMatch 'Unit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A Unit is an abstract classifier that represents the [VIM] concept of "measurement unit" that is defined as "real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the two quantities as a number."
human-readable word or sequence of words by which a thing is known
skos:exactMatch 'name' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
skos:exactMatch 'DerivedQuantityKind ' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A DerivedQuantityKind is a QuantityKind that represents a kind of quantity that is defined as a product of powers of one or more other kinds of quantity. A DerivedQuantityKind may also be used to define a synonym kind of quantity for another kind of quantity. For example "velocity" can be specified as the product of "length" to the power one times "time" to the power minus one, and subsequently "speed" can be specified as "velocity" to the power one.
skos:exactMatch 'factor' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Rational number that specifies the factor in the unit conversion relationship.
skos:exactMatch 'SpecializedQuantityKind' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A SpecializedQuantityKind is a QuantityKind that represents a kind of quantity that is a specialization of another kind of quantity. For example, "distance", "width", "depth", "radius" and "wavelength" can all be specified as specializations of the "length" SimpleQuantityKind.
skos:exactMatch 'Prefix' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A Prefix represents a named multiple or submultiple multiplication factor used in the specification of a PrefixedUnit. A SystemOfUnits may specify a set of prefixes.
skos:exactMatch 'offset' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Rational number that specifies the offset in the unit conversion relationship.
skos:exactMatch 'symbolicExpression' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Symbolic expression of the quantity dimension's product of powers, in terms of symbols of the kinds of quantity that represent the base kinds of quantity and their exponents.
skos:exactMatch 'DerivedUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A DerivedUnit is a Unit that represents a measurement unit that is defined as a product of powers of one or more other measurement units. For example the measurement unit "metre per second" for "velocity" is specified as the product of "metre" to the power one times "second" to the power minus one
skos:exactMatch 'ScaleValueDefinition' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A ScaleValueDefinition represents a specific value for a measurement scale.
skos:exactMatch 'exponent' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Rational number that specifies the exponent of the power to which the unit is raised.
skos:exactMatch 'general' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
skos:exactMatch 'generalization' [QUDT] http:qudt.org
A generalization relationship between two kinds of quantities.
skos:exactMatch 'Scale' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A Scale represents the [VIM] concept of a "measurement scale" that is defined as an "ordered set of quantity values of quantities of a given kind of quantity used in ranking, according to magnitude, quantities of that kind." A Scale specifies one or more fixed values that have a specific significance in the definition of the associating QuantityKind. For example the "thermodynamic temperature" kind of quantity is defined by specifying the values of 0 and 273.16 kelvin as the temperatures of absolute zero and the triple point of water respectively. A Scale does not always need to specify a unit. For example the "Rockwell C Hardness Scale" or the "Beaufort Wind Force Scale" are ordinal scales that do not have a particular associated unit. Similarly, subjective scales for a "priority" or "risk" kind of quantity with e.g. value definitions 0 for "low", 1 for "medium" and 3 for "high" do not have a particular associated unit.
skos:exactMatch 'DimensionFactor' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A DimensionFactor represents a factor in the product of powers that defines a Dimension.
skos:exactMatch 'LinearConversionUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A LinearConversionUnit is a ConversionBasedUnit that represents a measurement unit that is defined with respect to another measurement reference unit through a linear conversion relationship with a conversion factor. The unit conversion relationship is defined by the following equation: valueRU = factor · valueCU, where: valueRU is the quantity value expressed in the referenceUnit, and, valueCU is the quantity value expressed in the LinearConversionUnit.
Ordered set of Unit that specifies the units that are known in the system.
skos:exactMatch 'SystemOfUnits' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A SystemOfUnits represents the [VIM] concept of 'system of units' that is defined as 'set of base units and derived units, together with their multiples and submultiples, defined in accordance with given rules, for a given system of quantities'. It collects a list of Unit that are known in the system. A SysML SystemOfUnits only optionally defines multiples and submultiples.
skos:exactMatch 'SimpleQuantityKind' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A SimpleQuantityKind is a QuantityKind that represents a kind of quantity that does not depend on any other QuantityKind. Typically a base quantity would be specified as a SimpleQuantityKind.
Specification of a Scale that is associated to the QuantityKind.
skos:exactMatch 'quantityKind' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Ordered set of Prefix that specifies the prefixes for multiples and submultiples of units in the system
skos:closeMatch 'code' [QUDT] http://qudt.org/
A code is a string that uniquely identifies an individual.
Rational number that specifies the factor in the dimension conversion relationship.
skos:exactMatch 'UnitFactor' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A UnitFactor represents a factor in the product of powers that defines a DerivedUnit.
skos:exactMatch 'baseQuantityKind' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Ordered set of QuantityKind that specifies the base quantities of the system of quantities. This is a subset of the complete quantityKind list. The base quantities define the basis for the quantity dimension of a kind of quantity.
Specification of the associated ProeprtyType.
In order to generalize its potential usage and alignment with other standardization efforts concerning quantities and units, the QU ontology has been further developed as a complement to the Agriculture Meteorology example showcasing the ontology developed by the W3C Semantic Sensor Networks incubator group (SSN-XG). The Agriculture Meteorology example also includes an application of the QU schema to the UN/CEFACT Recommendation 20 code list. For more information on the group's activities see: http://www.w3.org/2005/Incubator/ssn/ .
Roger Burkhart (John Deere, USA and QUDV working group of the SysML 1.2 Revision Task Force (RTF))
Library for Quantity Kinds and Units: schema, based on QUDV model OMG SysML(TM), Version 1.2
Hans Peter de Koning (ESA, Netherlands and QUDV working group of the SysML 1.2 Revision Task Force (RTF))
Laurent Lefort (CSIRO, Australia and W3C Semantic Sensor Network Incubator Group)
The QUDV copyright holders have agreed for the QU ontology to be published by the W3C Semantic Sensor Incubator Group but this does not constitute an endorsement or recommendation by the QUDV working group of the SysML 1.2 Revision Task Force. All other rights reserved.
This ontology is partially based on the SysML QUDV (Quantities, Units, Dimensions and Values) proposed by a working group of the SysML 1.2 Revision Task Force (RTF), working in close coordination with the OMG MARTE specification group. This model library is specified in a UML/SysML class/block diagram in the OMG SysML, Version 1.2 specification (http://www.omg.org/spec/SysML/1.2/). This model is described in OMG SysML, Version 1.2 Appendix C.4 Model Library for Quantity Kinds and Units (http://ontolog.cim3.net/file/resource/reference/UoM_Ontology_Standard/available-UoM-references/QUDV-Annex-C4-C5--OMG-SysML-v1-2_Oct-2009.pdf). The QUDV model has also been represented in the form of an ontology using a formal ontology definition language. The resulting OWL ontology, called the QUDV ontology http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:qudv_owl has been published by members of the QUDV working group of the SysML 1.2 Revision Task Force (RTF). OMG SysML is a trademark of OMG (see http://www.omg.org/spec/SysML/1.2/PDF/ for the conditions of use of the OMG SysML, Version 1.2 specification).
This Model Library for Quantities, Units, Dimensions and Values (QUDV) (Note: in the ontology, the SYSML-QUDV definitions are flagged with a rdfs:seeAlso annotation equal to http://www.omgsysml.org/qudv).
sysml-qudv:qudv_owl Copyright 2009 - 2011 The QUDV authors
Nicolas Rouquette (NASA-JPL, USA and QUDV working group of the SysML 1.2 Revision Task Force (RTF))
Huascar Espinoza (CEA, France and QUDV working group of the SysML 1.2 Revision Task Force (RTF))
Please report any errors to the Semantic Sensor Network Incubator Activity via the public W3C list public-xg-ssn@w3.org or alternatively, for enquiries about the QUDV model, to the QUDV mailing list: http://www.omg.org/publicarchives/qudv/
skos:exactMatch 'ConversionBasedUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A ConversionBasedUnit is an abstract classifier that is a Unit that represents a measurement unit that is defined with respect to another reference unit through an explicit conversion relationship.
URI that contains an authoritative definition of the referent thing
skos:exactMatch 'definitionURI' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
URI that references an external definition.
skos:exactMatch 'SimpleUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A SimpleUnit is a Unit that represents a measurement unit that does not depend on any other Unit. Typically a base unit would be specified as a SimpleUnit.
skos:exactMatch 'specific' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A specialization relationship between two kinds of quantities.
Specification of the associated Unit "Kind".
skos:exactMatch 'baseUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Ordered set of Unit that specifies the base units of the system of units. A "base unit" is defined in [VIM] as a "measurement unit that is adopted by convention for a base quantity," i.e. it is the (preferred) unit in which base quantities of the associated systemOfQuantities are expressed.
skos:exactMatch 'value' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
skos:exactMatch 'expression' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Specifies the unit conversion relationship in some expression syntax.
skos:exactMatch 'baseDimension' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A Reference to the QuantityKind that represents the base quantity dimension in the factor.
skos:exactMatch 'GeneralConversionUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A GeneralConversionUnit is a ConversionBasedUnit that represents a measurement unit that is defined with respect to another reference measurement unit through a conversion relationship expressed in some syntax through a general mathematical expression. The unit conversion relationship is defined by the following equation: valueRU / valueCU = f(valueRU, valueCU) where: valueRU is the quantity value expressed in the referenceUnit, and, valueCU is the quantity value expressed in the GeneralConversionUnit, and, f(valueRU, valueCU) is a mathematical expression that includes valueRU and valueCU.
Derived ordered set of Dimension. The actual dimension of a QuantityKind depends on the list of baseQuantityKind that are specified in an actual SystemOfQuantities, see the DerivedDimensions constraint.
Specifies the multiple or submultiple multiplication factor.
Specification of the associated QuantityKind.
skos:exactMatch 'description' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
skos:exactMatch 'systemOfQuantities' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Reference to the SystemOfQuantities for which the units are specified.
Rational number that specifies the factor in the quantity conversion relationship.
skos:exactMatch 'referenceUnit' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Specifies the unit with respect to which the ConversionBasedUnit is defined.
A SystemOfQuantities represents the [VIM] concept of 'system of quantities' that is defined as a 'set of quantities together with a set of non-contradictory equations relating those quantities'. It collects a list of QuantityKind that specifies the kinds of quantity that are known in the system. The International System of Quantities (ISQ) is an example of a SystemOfQuantities, defined in ISO 31 and ISO/IEC 80000.
skos:exactMatch 'QuantityKindFactor' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A QuantityKindFactor represents a factor in the product of powers that defines a DerivedQuantityKind.
skos:exactMatch 'valueDefinition' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
Ordered set of ScaleValueDefinition that specifies the defined numerical value(s) and textual definition(s) for the measurement scale.
skos:exactMatch 'symbol' [SysML 1.2-QUDV] http://www.omgwiki.org/OMGSysML/doku.php?id=sysml-qudv:quantities_units_dimensions_values_qudv
A PropertyKind is a meta-property which helps to characterise categories of properties e.g. scalar, vector
A QuantityKind is an abstract classifier that represents the [VIM] concept of "kind of quantity" that is defined as "aspect common to mutually comparable quantities." A QuantityKind represents the essence of a quantity without any numerical value or unit. Quantities of the same kind within a given system of quantities have the same quantity dimension. However, quantities of the same dimension are not necessarily of the same kind.