Difference: AmericanSteelTransshipmentProblem (13 vs. 14)

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1. Summarise the problem as usual and list the shipments that American Steel should make (similar to the transportation problem);
2. Summarise the problem as usual and present a table of shipments that American Steel should make;
3. Draw the network formulation for the problem (being sure to specify what the labels mean). Then draw the actual solution on top of the network formulation. You could colour code flows long arcs to show if they are at their bounds.

Implementation and Ongoing Monitoring

Given that the solution is very sensitive to the supply and demand amounts, careful consideration of the accuracy of these figures is important. Making sure that the bounds on the arcs are reliable is another concern.

Ongoing monitoring of the supply, demand and bounds will help American Steel to keep making good decisions. As shown in the parametric analysis, ongoing negotiation of transportation prices along important routes will help American Steel reduce their expenditure.| |*FORM FIELD ExtraForExperts*|ExtraForExperts|Another common network flow problem that uses almost the same model as transshipment is the maximum flow problem. The objective of this problem is to maximise flow through the network. The only changes to transshipment.mod are:

1. A new variable FlowOut is introduced at each node;
2. FlowOut has lower and upper bounds, often the upper bound is set to as the Demand at the nodes;
3. FlowOut replaces Demand in the ConserveFlow constraints;
4. The ConserveFlow constraint becomes an equality constraint as all flow must be accounted for (no storage at the nodes);
5. Cost of transshipment is ignored;
6. The objective is to maximise the total flow out of the network sum {n in NODES} FlowOut[n];
7. The problem no longer needs to be balanced.

Maxflow.mod ???ATTACH MAXFLOW.MOD HERE???

If we set MaxOut to Demand for all nodes:

let {n in NODES} MaxOut[n] := Demand[n];

| |*FORM FIELD StudentTasks*|StudentTasks| 1 Solve The American Steel Problem. Write a management summary of your solution.

What to hand in Hand in your management summary.

EXTRA FOR EXPERTS' TASKS

1. American Steel are planning a marketing campaign to increase demand in their four markets Albany, Tempe, Houston and Gary. However, they would like to know the maximum demand their distribution network can handle (in each market) before they proceed. Write a script file that uses maxflow.mod and steel.dat to find the maximum demand they can supply in each market.

What to hand in Hand in your script file and a management summary of your solution.|