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 The Tucannon Harvesting Model

The documentation in chapter 14 explains the model in sufficient detail to allow you to build this model on your own.
But for the purpose of the Tucannon Harvesting Exercise, the 1st exercise in Chapter 14, you may download the model.


for Macintosh Computers
 
for Windows Computers
The original Mac version is a 52 KB Stella file. It was constructed with Stella Research 5.0 and tested on a Quadra 610 with a 13" monitor. (The interface fits nicely on this monitor with the page setup at 60% print reduction). Aladin Systems' Stuffit was used to create a 15KB archive file which you may download to your computer. After the file is unstuffed, try the setting the harvest fraction to 75% after the 120th month and leave the other parameters at their default values. You should receive a congratulatory note when the cumulative harvest exceeds $5 million around the 250th month of the simulation.

Click HERE to download the model.
  The windows version is a 52 KB Stella File. It was construced with Stella Ver 5.0 and tested on an IBM ThinkPad with a 12" screen using Windows 95. The Winzip program was used to compress the file to 16KB. After the file is unzipped, try the a simulation with 50% harvesting after 120 months. If you leave the other parameters at the default values, you should receive a congratulatory note that the cumulative harvest exceeds $5 million around the 250th month of the simulation

Click HERE to download the model.


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Content for the STEP curriculum was originally converted to the web in the summer of 2000 by Mike Bull, Bonneville Power Administration, (503) 230-3811.
Page updated September 28, 2000 by BPA Communications, (503) 230-5131.