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1. Download the file soil_dose.eco and open it in AFRY Intelligent Scenario Modelling by clicking the button, or by selecting File | Open from the Menu bar.
2. The agricultural sub-system has a transfer named “Deposition”. The deposition rate is defined as a parameter, making it impossible to run a simulation with a time-varying deposition rate – for instance contamination during a limited time. You will create a General Variable that allows different ways of entering values for deposition.
3. Open the sub-system Agricultural Land.
4. Rename the parameter depRate to depRate_constant.
5. Create a lookup table, call it depRate_lookup. Assign a default value of 0.
6. Click Ok to close.
7. Create a General Variable and name it “depRate”.
8. Make the General Variable a vector (dimension 1-dependency)
9. In the list Available objects, move the Parameter depRate_constant and the Lookup Table depRate_lookup to the selected list using the > button.
10. Select the depRate_constant in the -Default- Selected field above.
11. Click Ok to close.
12. Edit the Transfer Deposition. Choose the Values tab. Replace the Parameter depRate_constant with the General Variable depRate in the Expression field.

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• Packaging the Sub-systems (3/5)

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References

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