Total transportation time of perishable shipment 
(hours)
=1 if linear segment 
is selected to approximate the decay function for a perishable product in shipment 
(=0 otherwise)
Approximated decay of a perishable product in shipment 
(%)
|
| Total transportation time of perishable shipment |
|
| =1 if linear segment |
|
| Approximated decay of a perishable product in shipment |