Units

Typical quantities used in models

Package Contents

	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 (FTE) 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 (JP¥) Money [JP¥]
	Money_GBP (£) Money [£]
	Money_CNY (CN¥) Money [CN¥]
	Volume (m³) Volume [m3]
	Mass (kg) Mass [kg]
	Energy (J) Energy [J]\|[W.s]
	ElectricCharge (C) Electric charge [C]
	DataCapacity (bit) Data capacity [bit]
	Entropy (J/K) Entropy [J/K]
	Momentum (kg⋅m/s) Momentum [kg.m/s]
	AngularMomentum (kg⋅m²/s) Angular momentum [kg.m2/s]
	AmountOfSubstance (mol) Amount of substance [mol]
	IntensiveQuantity Intensive quantity
	Angle (rad) Angle [rad]
	Length (m) Length [m]
	Area (m²) Area [m2]
	Density (kg/m³) Density [kg/m3]
	Temperature (K) Absolute temperature [K]
	TemperatureDifference (K) Temperature difference [K]
	Rate (1/s) Dimensionless rate of flow [1/s]
	AmountRate (#/s) Amount rate/Throughput [each/s]
	LaborGrowthRate (FTE/s) Labor growth rate [FTE/s]
	MonetaryFlow (¤/s) Monetary flow [¤/s]
	MonetaryFlow_EUR (€/s) Monetary flow [€/s]
	MonetaryFlow_USD ($/s) Monetary flow [US$/s]
	MonetaryFlow_GBP (£/s) Monetary flow [£/s]
	MonetaryFlow_JPY (JP¥/s) Monetary flow [JP¥/s]
	MonetaryFlow_CNY (CN¥/s) Monetary flow [CN¥/s]
	VolumeFlowRate (m³/s) Volume flow rate [m3/s]
	MassFlowRate (kg/s) Mass flow rate [kg/s]
	EnergyFlowRate (W) Energy flow rate (Power) [W]\|[J/s]
	MomentumFlowRate (kg⋅m/s²) Momentum flow rate [km.m/s2]
	AngularMomentumFlowRate (kg⋅m²/s²) Angular momentum flow rate (torque) [kg/m2/s2]
	Velocity (m/s) Velocity [m/s]
	EntropyFlowRate (J/(K⋅s)) Entropy flow rate [J/(K.s)]
	DataTransferRate (bit/s) Data transfer rate [bit/s]
	ElectricCurrent (A) Electric current [A]\|[C/s]
	Time (s) Time [s]
	Time_minutes (s) Time [min]
	Time_hours (s) Time [h]
	Time_days (s) Time [d]
	Time_weeks (s) Time [wk]
	Time_months (s) Time [mo]
	Time_quarters (s) Time [qtr]
	Time_years (s) Time [yrCal (y)]

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.

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.

Package Contents

Information

Notes

See also

Revisions