.BusinessSimulation.Units

Typical quantities used in models

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.

Name	Description
Unspecified	Unspecified
Dimensionless	Dimensionless [1]
Ratio	Ratio [1]
PositiveRatio	Positive ratio [1]
Fraction	Proper fraction between -1 and 1 [1]
Probability	Probability [1]
Information	Information
ExtensiveQuantity	Extensive quantity
Amount	Amount [each]
Population	Population [each]
People	Human population [each]
Labor	Labor [FTE]
TangibleAssets	Tangible assets [each]
Material	Material [each]
Goods	Finished or intermediary goods [each]
IntangibleAssets	Intangible assets [each]
UnitScaleIntangibles	Intangibles measured on the unit scale [1]
Orders	Orders [each]
Money	Money [¤]
Money_USD	Money [US$]
Money_EUR	Money [€]
Money_JPY	Money [JP¥]
Money_GBP	Money [£]
Money_CNY	Money [CN¥]
Volume	Volume [m3]
Mass	Mass [kg]
Energy	Energy [J]\|[W.s]
ElectricCharge	Electric charge [C]
DataCapacity	Data capacity [bit]
Entropy	Entropy [J/K]
Momentum	Momentum [kg.m/s]
AngularMomentum	Angular momentum [kg.m2/s]
AmountOfSubstance	Amount of substance [mol]
IntensiveQuantity	Intensive quantity
Angle	Angle [rad]
Length	Length [m]
Area	Area [m2]
Density	Density [kg/m3]
Temperature	Absolute temperature [K]
TemperatureDifference	Temperature difference [K]
Rate	Dimensionless rate of flow [1/s]
AmountRate	Amount rate/Throughput [each/s]
LaborGrowthRate	Labor growth rate [FTE/s]
MonetaryFlow	Monetary flow [¤/s]
MonetaryFlow_EUR	Monetary flow [€/s]
MonetaryFlow_USD	Monetary flow [US$/s]
MonetaryFlow_GBP	Monetary flow [£/s]
MonetaryFlow_JPY	Monetary flow [JP¥/s]
MonetaryFlow_CNY	Monetary flow [CN¥/s]
VolumeFlowRate	Volume flow rate [m3/s]
MassFlowRate	Mass flow rate [kg/s]
EnergyFlowRate	Energy flow rate (Power) [W]\|[J/s]
MomentumFlowRate	Momentum flow rate [km.m/s2]
AngularMomentumFlowRate	Angular momentum flow rate (torque) [kg/m2/s2]
Velocity	Velocity [m/s]
EntropyFlowRate	Entropy flow rate [J/(K.s)]
DataTransferRate	Data transfer rate [bit/s]
ElectricCurrent	Electric current [A]\|[C/s]
Time	Time [s]
Time_minutes	Time [min]
Time_hours	Time [h]
Time_days	Time [d]
Time_weeks	Time [wk]
Time_months	Time [mo]
Time_quarters	Time [qtr]
Time_years	Time [yrCal (y)]