Search found 3 matches
- Wed Aug 10, 2016 1:35 am
- Forum: System Dynamics Discussion
- Topic: Dependent Variable Noise
- Replies: 2
- Views: 3566
Re: Dependent Variable Noise
John, I recommend you reading Appendix B of Business Dynamics (Sterman 2000) before modeling noise. I attached a possible structure you can use to model a first-order pink noise. Roughly speaking, pink noise is used when next value is in somehow dependent on previous one, it means that there is some...
- Wed Aug 10, 2016 12:34 am
- Forum: System Dynamics Discussion
- Topic: How to solve computing problem
- Replies: 1
- Views: 2810
Re: How to solve computing problem
Azri, good evening. This is your lookup function: [(0,0)-(52,1000)],(1,200),(25,250),(40,200),(52,150) It means that you are setting a lookup function for x varying from 1 to 52, and y varying from 150 to 1000 However, x = (Retailer inventory/average retailer inventory) is varying from 0 to 1053.06,...
- Mon Aug 08, 2016 10:53 pm
- Forum: System Dynamics Discussion
- Topic: How to model 2 stocks feeding a 3rd one through a single valve?
- Replies: 1
- Views: 3272
How to model 2 stocks feeding a 3rd one through a single valve?
Dear Messrs. good evening and best wishes. I am trying to build a model following the logic embedded on paper System dynamics applied to project management: a survey, assessment, and directions for future research by Lyneis and Ford. In their paper, they suggest that two stocks (Original Work to Do ...