Information Technology Reference
In-Depth Information
Constraints
All articles have the same size.
Each reorder is executed independently of other reorders, especially
no reorders are combined.
Each order and reorder fits in a single truck.
A.1.2 Conceptual model
Model overview
Target parameters The following target parameters are defined:
Processing time: The processing time spans the time period from
receiving an order until all required articles are loaded onto an
outgoing truck. Two different situations are distinguished: The first
situation is that all articles are available in the warehouse, whereas
in the second situation some (or all) articles have to be reordered
by the warehouse manager.
Name
Unit
Description
PT min
minutes Minimum Processing Time, all articles avail-
able.
PT avg
minutes Average Processing Time, all articles avail-
able.
PT max
minutes Maximum Processing Time, all articles avail-
able.
PT min
minutes Minimum Processing Time, articles have to
be reordered.
PT avg
minutes Average Processing Time, articles have to be
reordered.
PT max
minutes Maximum Processing Time, articles have to
be reordered.
Costs: The costs are determined by the size of the warehouse, the
average inventory and the number of workers and forklifts.
 
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