packageUnits

Typical quantities used in models

Extends from ICON (Units package icon).

Information

This information is part of the Business Simulation Library (BSL). Please support this work and ► donate.

This package contains types to represent SI units and (some) non-SI units used in models of social and ecological systems.

Notes

  • Non-SI units in the Business Simulation Library are used sparingly and with careful thought behind their inclusion. Their use in platforms other than Wolfram System Modeler hinges upon whether custom definitions of base units, such as each (#) for counting entities and USD ($) as a monetary unit, are permitted.

  • Convenient definitions for derived units, such as yrCal for a mean Gregorian calendar year, are especially useful in economic and ecological models.

  • Currently, Wolfram System Modeler seems to uniquely offer such flexibility and convenience.

  • Where this is not the case, modelers can always resort to what is allowed in all tools, so that dimensionless units may be used for counting instead of each or other non-standard base units, and times can be entered using exact day counts. Modelica as a language is constantly evolving, so hopefully, some of the innovations this library introduces might find their way into the mainstream. A tentative proposal has been made to the language group.

See also

Tutorial.UnitsInBusinessSimulations

Copyright © 2020 Guido Wolf Reichert
Licensed under the EUPL-1.2 or later

Contents

NameDescription
UnspecifiedUnspecified
DimensionlessDimensionless [1]
RatioRatio [1]
PositiveRatioPositive ratio [1]
FractionProper fraction between -1 and 1 [1]
ProbabilityProbability [1]
InformationInformation
ExtensiveQuantityExtensive quantity
AmountAmount [each]
PopulationPopulation [each]
PeopleHuman population [each]
LaborLabor [FTE]
TangibleAssetsTangible assets [each]
MaterialMaterial [each]
GoodsFinished or intermediary goods [each]
IntangibleAssetsIntangible assets [each]
UnitScaleIntangiblesIntangibles measured on the unit scale [1]
OrdersOrders [each]
MoneyMoney [¤]
Money_USDMoney [US$]
Money_EURMoney [€]
Money_JPYMoney [JP¥]
Money_GBPMoney [£]
Money_CNYMoney [CN¥]
VolumeVolume [m3]
MassMass [kg]
EnergyEnergy [J]|[W.s]
ElectricChargeElectric charge [C]
DataCapacityData capacity [bit]
EntropyEntropy [J/K]
MomentumMomentum [kg.m/s]
AngularMomentumAngular momentum [kg.m2/s]
AmountOfSubstanceAmount of substance [mol]
IntensiveQuantityIntensive quantity
AngleAngle [rad]
LengthLength [m]
AreaArea [m2]
DensityDensity [kg/m3]
TemperatureAbsolute temperature [K]
TemperatureDifferenceTemperature difference [K]
RateDimensionless rate of flow [1/s]
AmountRateAmount rate/Throughput [each/s]
LaborGrowthRateLabor growth rate [FTE/s]
MonetaryFlowMonetary flow [¤/s]
MonetaryFlow_EURMonetary flow [€/s]
MonetaryFlow_USDMonetary flow [US$/s]
MonetaryFlow_GBPMonetary flow [£/s]
MonetaryFlow_JPYMonetary flow [JP¥/s]
MonetaryFlow_CNYMonetary flow [CN¥/s]
VolumeFlowRateVolume flow rate [m3/s]
MassFlowRateMass flow rate [kg/s]
EnergyFlowRateEnergy flow rate (Power) [W]|[J/s]
MomentumFlowRateMomentum flow rate [km.m/s2]
AngularMomentumFlowRateAngular momentum flow rate (torque) [kg/m2/s2]
VelocityVelocity [m/s]
EntropyFlowRateEntropy flow rate [J/(K.s)]
DataTransferRateData transfer rate [bit/s]
ElectricCurrentElectric current [A]|[C/s]
TimeTime [s]
Time_minutesTime [min]
Time_hoursTime [h]
Time_daysTime [d]
Time_weeksTime [wk]
Time_monthsTime [mo]
Time_quartersTime [qtr]
Time_yearsTime [yrCal (y)]

Revisions

  • Extensive revisions of the unit framework in v2.2 as to make use of Wolfem System Modeler's excellent unit framework, introduced in WSM 14.