ExponentialDeclineExponential decline of connected stock 
This information is part of the Business Simulation Library (BSL).
ExponentialDecline will drain the connected stock into a sink with infinite capacity at a rate that is determined at any time as the product of the current amount in the connected stock and the fractional rate given. The rate can either be given as a constant parameter fractionalRate
or as a real input u, making it variable in time.
isCCR = true
). If this is not case, the rate will be converted using the →ForceOfInterest converter.fractionalRate 
Value: unspecified Type: OutputType (1/s) Description: Constant fractional rate to be used if chosen 

isCCR 
Value: true Type: Boolean Description: = true, if the factional rate given is assumed to be a continuously compounding rate else the rate will be converted 
hasConstantRate 
Value: false Type: Boolean Description: = true, if the constant fractional rate is used instead of the real input u 
y 
Type: RealOutput Description: Rate information 


y1 
Type: RealOutput Description: Rate information 

y2 
Type: RealOutput Description: Rate information 

massPort 
Type: FlowPort Description: Inflow to or outflow from connected stock 

u 
Type: RealInput Description: Fractional rate given as exogenous input 
decreasing 
Type: ProportionalTransition 


cloud 
Type: Cloud Description: System boundary 

parFractionalRate 
Type: ConstantConverter Description: Constant rate (optional) 

indicatedRate 
Type: PassThrough Description: Indicated fractional rate 

convertedRate 
Type: ForceOfInterest Description: Continuously compounding rate 
BusinessSimulation.Examples Predatorprey dynamics 

LotkaVolterraEquationsRevisited BusinessSimulation.Examples Predatorprey dynamics with an additional predator 
unspecified
in v2.1.0.