|Consider again the distribution
situation that began this chapter. The manager learns
that there is a problem with transshipments through Atlanta.
The airport has instituted a fee for each unit transferred
and limits transfers to 100 units per week. In addition,
there is a spoilage of 10% of the units transferred.
The model of Fig. 2 does not allow this information to
be included, because there is no way to identify on a single
arc the flow that represents the amount transshipped. Restrictions
can be placed on an arc, but not on the material passing
through a node. We accomplish this modeling task by dividing
the Atlanta node into two nodes as in Fig. 24 and adding
an arc between. The flow that actually passes through Atlanta
now flows on arc 17, and any information related to that
flow is described by the parameters of the arc.
Figure 24. Including Node Information