DDHub-Semantic-Interoperability

Description: quantities and units

NOUNS

MeasurableQuantity

Display name: MeasurableQuantity
Parent class: DWISNoun
Attributes:
- MeaningfulPrecision
  - Type: double
  - Description:
Specialization:
Description: Represents a quantity that allows meaningful comparisons. A MeasurableQuantity is related to a Quantity using the HasMeasurableQuantity relation and its reciprocal relation called IsOfBaseQuantity. Context dependence: for example, Fluid density and Equivalent Circulating Density are represented as two different “Measurable quantities”, although they both refer to the same base SI quantities. Typical sub-types of MeasurableQuantity are provided in MeasurableQuantityTypes. These types can be used in a sort of singleton pattern, i.e., it is not necessary to create an individual to use them in a relation. Also, if individuals are created with the same characteristics, they are considered as being multiple representations of the same Noun. The list of MeasurableQuantity in MeasurableQuantityTypes is automatically generated from the PhysicalQuantities defined in the Open Source Drilling Community (OSDC) project called UnitConversion (see OSDC UnitConversion). Only the physical quantities for which a MeaningfulPrecision has beed defined are used to generate MeasurableQuantityTypes. It is possible to look at all the physical quantities defined in the OSDC UnitConversion project by using the web application hosted here: OSDC Physical Quantity Web App.
Examples: dwis signal_1 DrillingDataPoint: acceleration_1 acceleration_1 IsOfMeasurableQuantity AccelerationDrillingQuantity
MeasurableQuantityUnitAssociation
Display name: MeasurableQuantityUnitAssociation
Parent class: DWISNoun
Attributes:
Specialization:
Description: This noun is typically used to create an association between a MeasurableQuantity and a Unit as for example when defining a UnitSystem.

Examples:

UnitSystem:metricUnitSystem_1
MeasurableQuantityUnitAssociation:metricAssociationAcceleration
metricAssociationAcceleration AssociatesUnit MetrePerSecondSquared
metricAssociationAcceleration AssociatesMeasurableQuantity AccelerationDrillingQuantity
metricUnitSystem_1 hasUnitAssociation metricAssociationAcceleration

Quantity

Display name: Quantity
Parent class: DWISNoun
Attributes:
- L
  - Type: double
  - Description: Length exponent. SI Unit: metre (m)
- M
  - Type: double
  - Description: Mass exponent. SI Unit: Kilogram (kg)
- T
  - Type: double
  - Description: Time exponent. SI Unit: Second (s)
- I
  - Type: double
  - Description: Electric current exponent. SI Unit: Ampere (A)
- ThT
  - Type: double
  - Description: Thermodynamic temperature exponent. SI Unit: Kelvin (K)
- N
  - Type: double
  - Description: Amount of substance exponent. SI Unit: Mole (N)
- J
  - Type: double
  - Description: Luminous intensity exponent. SI Unit: Candela (cd)
- Theta
  - Type: double
  - Description: plane angle exponent. SI Unit: radian (rad)
- Omega
  - Type: double
  - Description: solid angle exponent. SI Unit: steradian (sr)
- SIUnit
  - Type: string
  - Description:
Specialization:
Description: A Quantity represents a physical quantity. A Quantity is characterized by its physical dimensions as defined in the SI International System of units. There are typical sub-types of Quantity defined in QuantityTypes. These types can be used in a sort of singleton pattern, i.e., it is not necessary to create an individual to use them in a relation. Also, if individuals are created with the same characteristics, they are considered as being multiple representations of the same Noun. These typical sub-types are automatically generated from the PhysicalQuantities defined in the Open Source Drilling Community (OSDC) project called UnitConversion (see OSDC UnitConversion). Only the physical quantities for which a MeaningfulPrecision is not defined are used to generate QuantityTypes. It is possible to look at all the physical quantities defined in the OSDC UnitConversion project by using the web application hosted here: OSDC Physical Quantity Web App.

Examples: Here is an example making use of a predifined quantity defined in QuantityTypes

DrillingSignal:acceleration_signal
DrillingDataPoint:acceleration_1
acceleration_1 HasValue acceleration_signal
acceleration_1 IsOfMeasurableQuantity AccelerationDrillingQuantity
acceleration_signal HasUnitOfMeasure MetrePerSecondSquared

And here is an example where the Quantity is defined from scratch:

Quantity:linearDisplacementQuantity
linearDisplacement.L = 2
MeasurableQuantity:measurableLinearDisplacementQuantity
measurableLinearDisplacementQuantity.MeaningfulPrecision = 0.001
measurableLinearDisplacementQuantity IsOfBaseQuantity linearDisplacementQuantity
linearDisplacementQuantity HasMeasurableQuantity measurableLinearDisplacementQuantity
Unit:cubicMetrePerMetre
cubicMetrePerMetre.ConversionFactorA = 0
cubicMetrePerMetre.ConversionFactorB = 1
cubicMetrePerMetre.Symbol = "m^3/m"
cubicMetrePerMetre IsUnitForQuantity linearDisplacementQuantity
linearDisplacementQuantity HasSIUnit cubicMetrePerMetre
DrillingSignal:linearDisplacement_signal
DrillingDataPoint:linearDisplacement_1
linearDisplacement_1 HasValue linearDisplacement_signal
linearDisplacement_1 IsOfMeasurableQuantity measurableLinearDisplacementQuantity
linearDisplacement_signal HasUnitOfMeasure cubicMetrePerMetre

Unit

Display name: Unit
Parent class: DWISNoun
Attributes:
- Symbol
  - Type: string
  - Description: a typical label for that unit.
- ConversionFactorA
  - Type: double
  - Description: Unit conversion from SI unit is performed as: ConvertedValue = ConversionFactorA + SIValue * ConversionFactorB
- ConversionFactorB
  - Type: double
  - Description: Unit conversion from SI unit is performed as: ConvertedValue = ConversionFactorA + SIValue * ConversionFactorB
Specialization:
- ConversionFactorA = 0
- ConversionFactorB = 1
Description: Physical quantities, such as length, mass, time, temperature, and electric current, are described using both a numerical value and a Unit. The Unit defines what standard is being used to measure that quantity. A Unit is characterized by two attributes ConversionFactorA and ConversionFactorB that are used to convert a SI value to the unit. Typical sub-types are made available. These types can be used in a sort of singleton pattern, i.e., it is not necessary to create an individual to use them in a relation. Also, if individuals are created with the same characteristics, they are considered as being multiple representations of the same Noun. Typical sub-types for the Noun Unit are defined in UnitTypes. These units are automatically generated from the unit conversions of each individual PhysicalQuantities defined in the Open Source Drilling Community (OSDC) project called UnitConversion (see OSDC UnitConversion). It is possible to look at all the physical quantities defined in the OSDC UnitConversion project by using the web application hosted here: OSDC Physical Quantity Web App.

Examples:

DrillingSignal:acceleration_signal
DrillingDataPoint:acceleration_1
acceleration_1 HasValue acceleration_signal
acceleration_1 IsOfMeasurableQuantity AccelerationDrillingQuantity
acceleration_signal HasUnitOfMeasure MetrePerSecondSquared

UnitSystem

Display name: UnitSystem
Parent class: DWISNoun
Attributes:
Specialization:
Description: A set of associations between measurable quantities and units.

Examples:

UnitSystem:metricUnitSystem_1
MeasurableQuantityUnitAssociation:metricAssociationAcceleration
metricAssociationAcceleration AssociatesUnit MetrePerSecondSquared
metricAssociationAcceleration AssociatesMeasurableQuantity AccelerationDrillingQuantity
metricUnitSystem_1 hasUnitAssociation metricAssociationAcceleration

VERBS

AssociatesMeasurableQuantity

Display name: AssociatesMeasurableQuantity
Parent verb: DWISVerb
Subject class: MeasurableQuantityUnitAssociation
Object class: MeasurableQuantity
Description: This Verb is typically used when defining a UnitSystem. It allows to associate a MeasurableQuantityUnitAssociation with a MeasurableQuantity.

Examples:

UnitSystem:metricUnitSystem_1
MeasurableQuantityUnitAssociation:metricAssociationAcceleration
metricAssociationAcceleration AssociatesUnit MetrePerSecondSquared
metricAssociationAcceleration AssociatesMeasurableQuantity AccelerationDrillingQuantity
metricUnitSystem_1 hasUnitAssociation metricAssociationAcceleration

AssociatesUnit

Display name: AssociatesUnit
Parent verb: DWISVerb
Subject class: MeasurableQuantityUnitAssociation
Object class: Unit
Description: This Verb is typically used when defining a UnitSystem. It allows to associate a MeasurableQuantityUnitAssociation with a Unit.

Examples:

UnitSystem:metricUnitSystem_1
MeasurableQuantityUnitAssociation:metricAssociationAcceleration
metricAssociationAcceleration AssociatesUnit MetrePerSecondSquared
metricAssociationAcceleration AssociatesMeasurableQuantity AccelerationDrillingQuantity
metricUnitSystem_1 hasUnitAssociation metricAssociationAcceleration

HasUnitAssociation

Display name: HasUnitAssociation
Parent verb: DWISVerb
Subject class: UnitSystem
Object class: MeasurableQuantityUnitAssociation
Description: This Verb is typically used when defining a UnitSystem. It allows to associate a UnitSystem with a MeasurableQuantityUnitAssociation.

Examples:

UnitSystem:metricUnitSystem_1
MeasurableQuantityUnitAssociation:metricAssociationAcceleration
metricAssociationAcceleration AssociatesUnit MetrePerSecondSquared
metricAssociationAcceleration AssociatesMeasurableQuantity AccelerationDrillingQuantity
metricUnitSystem_1 hasUnitAssociation metricAssociationAcceleration

HasMeasurableQuantity

Display name: HasMeasurableQuantity
Parent verb: DWISVerb
Subject class: Quantity
Object class: MeasurableQuantity
Description: This Verb is used to define the reciprocal relationship of IsOfBaseQuantity, i.e., to relate a Quantity with a MeasureableQuantity.

Examples:

Quantity:linearDisplacementQuantity
linearDisplacement.L = 2
MeasurableQuantity:measurableLinearDisplacementQuantity
measurableLinearDisplacementQuantity.MeaningfulPrecision = 0.001
measurableLinearDisplacementQuantity IsOfBaseQuantity linearDisplacementQuantity
linearDisplacementQuantity HasMeasurableQuantity measurableLinearDisplacementQuantity

IsOfBaseQuantity

Display name: IsOfBaseQuantity
Parent verb: DWISVerb
Subject class: MeasurableQuantity
Object class: Quantity
Description: This Verb is used to associate a MeasurableQuantity with a Quantity. It is the reciprocal relationship to HasMeasurableQuantity.

Examples:

Quantity:linearDisplacementQuantity
linearDisplacement.L = 2
MeasurableQuantity:measurableLinearDisplacementQuantity
measurableLinearDisplacementQuantity.MeaningfulPrecision = 0.001
measurableLinearDisplacementQuantity IsOfBaseQuantity linearDisplacementQuantity
linearDisplacementQuantity HasMeasurableQuantity measurableLinearDisplacementQuantity

IsOfMeasurableQuantity

Display name: IsOfMeasurableQuantity
Parent verb: DWISVerb
Subject class: DrillingDataPoint
Object class: MeasurableQuantity
Description: This verb is used to relate a MeasureableQuantity to a DrillingDataPoint.

Examples:

DrillingDataPoint:acceleration_1
acceleration_1 IsOfMeasurableQuantity AccelerationDrillingQuantity

IsUnitForQuantity

Display name: IsUnitForQuantity
Parent verb: DWISVerb
Subject class: Unit
Object class: Quantity
Description: This verb is used to relate a Unit with a Quantity.

Examples:

Quantity:linearDisplacementQuantity
linearDisplacement.L = 2
Unit:cubicMetrePerMetre
cubicMetrePerMetre.ConversionFactorA = 0
cubicMetrePerMetre.ConversionFactorB = 1
ConversionFactorB.Symbol = "m^3/m"
cubicMetrePerMetre IsUnitForQuantity linearDisplacementQuantity

HasSIUnit

Display name: HasSIUnit
Parent verb: DWISVerb
Subject class: Quantity
Object class: Unit
Description: This verb is used to be define a relation between a Quantity and a Unit.

Examples:

Quantity:linearDisplacementQuantity
linearDisplacement.L = 2
Unit:cubicMetrePerMetre
cubicMetrePerMetre.ConversionFactorA = 0
cubicMetrePerMetre.ConversionFactorB = 1
ConversionFactorB.Symbol = "m^3/m"
cubicMetrePerMetre IsUnitForQuantity linearDisplacementQuantity
linearDisplacementQuantity HasSIUnit cubicMetrePerMetre

HasUnitOfMeasure

Display name: HasUnitOfMeasure
Parent verb: DWISVerb
Subject class: DrillingSignal
Object class: Unit
Description:

Examples: This verb is used to be define a relation between a DrillingSignal and a Unit.

DrillingSignal:acceleration_signal
DrillingDataPoint:acceleration_1
acceleration_1 HasValue acceleration_signal
acceleration_1 IsOfMeasurableQuantity AccelerationDrillingQuantity
acceleration_signal HasUnitOfMeasure MetrePerSecondSquared

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