From how much it has been said the production before depends on many factors, included the difference between the inventory it puts into effect them and that one wished. On the moment that the flow rate productivity (Production flow installments) depends on the level of the Inventory is necessary to create a connection (information link) that extension this relation.

1. Cliccare on Link on the bar of the instruments;
2. Posizionare the cursore in the symbol of the inventory;
3. Ciccare and to drag the Link on the symbol of the variable “Production”;

Figure 3.5 - The dependency of the production from the inventory is modeled from the Link (connection).

The symbol # on the link indicates that the variable ones connected still are not defined in appropriate way.

3.7 To add the concept of Wished Inventory

In order to represent the difference between the inventory they puts into effect and that one wished in the equation of the production is necessary one new variable.
The wished inventory (Desired Inventory) is not an accumulation but rather a value determined from the manageriale direction of the society based on the running inventory.
For which helping it is the best rappresentation for this variable one in the implementation of the model.
Figure 3.6- Desired Inventory is used in order to decide the percentage of production. It is represented to help connected to the production through a Link

3.8 To add the time in order to correct the inventory

The third member of the production is the time necessary in order to fill up of new the inventory.
This factor of time represents a delay in the system because in the real life, the production cannot instantaneously fill up the inventory.
Time in order to produce the assets materially to us wants and to transport them in warehouse physically.
In this case sixth of the discrepancy between inventory they puts into effect and that one wished is corrected every week.
Therefore, when the level of the wished inventory changes, they want six weeks to us so that the level of the inventory puts into effect them changes consequently. This factor of time does not change during all the simulation and comes therefore represented from one Constant that, as already it has been seen is represented from a rumble.
Figure 3.7- There is a been involved delay of time when assets for the inventory are produced. This duration is modeled like one constant call “Time to Correct Inventory”, and is connected to the “Production”

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