Exponential Growth

1 collaborator

Uri Wilensky (Author)

WHAT IS IT?

This is a model of exponential growth using the System Dynamics Modeler.

HOW IT WORKS

At each step, the value of INFLOW is added to STOCK. The value of INFLOW is always the previous value of STOCK times a specified growth rate.

HOW TO USE IT

Press the SETUP button, then press the GO button to run the model.

THINGS TO NOTICE

View the STOCK monitor to see the current value of STOCK.

View the plot to observe the growth of STOCK over time.

THINGS TO TRY

Use the System Dynamics Modeler to add an outflow.

Try different growth-rate values.

EXTENDING THE MODEL

Create a new stock that grows linearly. Try having the level of one stock influence the growth rate of the other.

NETLOGO FEATURES

This model uses the System Dynamics Modeler.

RELATED MODELS

System Dynamics -> Logistic Growth

HOW TO CITE

If you mention this model in a publication, we ask that you include these citations for the model itself and for the NetLogo software:

Wilensky, U. (2005). NetLogo Exponential Growth model. http://ccl.northwestern.edu/netlogo/models/ExponentialGrowth. Center for Connected Learning and Computer-Based Modeling, Northwestern Institute on Complex Systems, Northwestern University, Evanston, IL.
Wilensky, U. (1999). NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern Institute on Complex Systems, Northwestern University, Evanston, IL.

COPYRIGHT AND LICENSE

CC BY-NC-SA 3.0

This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.

Commercial licenses are also available. To inquire about commercial licenses, please contact Uri Wilensky at uri@northwestern.edu.

Comments and Questions

Click to Run Model

;; system-dynamics-setup, system-dynamics-do-plot, and system-dynamics-go are automatically
;; generated by the System Dynamics Modeler.  The code can be viewed in the
;; Code Tab of the System Dynamics Modeler.

to setup
  ca
  system-dynamics-setup
  system-dynamics-do-plot
end 

to go
  system-dynamics-go
  system-dynamics-do-plot
end 


; Copyright 2005 Uri Wilensky.
; See Info tab for full copyright and license.

There are 10 versions of this model.

Uploaded by	When	Description	Download
Uri Wilensky	over 11 years ago	Updated to NetLogo 5.0.4	Download this version
Uri Wilensky	about 12 years ago	Updated version tag	Download this version
Uri Wilensky	about 12 years ago	Updated to version from NetLogo 5.0.3 distribution	Download this version
Uri Wilensky	almost 13 years ago	Updated to NetLogo 5.0	Download this version
Uri Wilensky	over 14 years ago	Updated from NetLogo 4.1	Download this version
Uri Wilensky	over 14 years ago	Updated from NetLogo 4.1	Download this version
Uri Wilensky	over 14 years ago	Updated from NetLogo 4.1	Download this version
Uri Wilensky	over 14 years ago	Updated from NetLogo 4.1	Download this version
Uri Wilensky	over 14 years ago	Model from NetLogo distribution	Download this version
Uri Wilensky	over 14 years ago	Exponential Growth	Download this version

Attached files

File	Type	Description	Last updated
Exponential Growth.png	preview	Preview for 'Exponential Growth'	over 11 years ago, by Uri Wilensky	Download

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