[Repast-developer] [ repast-Bugs-1389187 ] SD rabbit example not right

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Bugs item #1389187, was opened at 2005-12-23 14:20
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Category: None
Group: future requests
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: SD rabbit example not right

Initial Comment:
Hello,

Was looking at the rabbit population system dynamics 
example and realized that the output doesn't make 
sense.  The referenced paper is entitled, "Generic 
Structures: S-shaped growth."  Thus the model's 
response should start from an initial value and 
simply move asmyptoticallly to a higher value. The 
repast model oscillates, which is theoretically 
impossible in the rabbit population model because 
there is only one stock -- it takes to stocks for a 
system to oscillate.  Wondering if some stray 
integration/simulation phenomenon is responsible for 
ringing.  In any respect, something's not right.  

thx,

cor...@ba...


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101703&aid=1389187&group_id=1703