refinery - p #Decision Variables #Amount of crude purchased...

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set REGIONS; # of regions from which crude oil was purchased set PROD; # of end products param buy_min {REGIONS}>=0; # lower limit on crude oil purchased param buy_max {REGIONS}>=0; # upper limit on crude oil purchased param cost{REGIONS}>=0; # crude oil costs by region param sell_min {PROD}>=0; # lower bound on end products sold param sell_max {PROD}>=0; # upper bound on end products sold param amt {PROD,REGIONS}>=0; # amount of product extracted per ton of crude oil;
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Unformatted text preview: p #Decision Variables #Amount of crude purchased from each region var Purchases{j in REGIONS}>=buy_min[j],<=buy_max[j]; v #Objective function minimize Total_cost: sum{j in REGIONS} cost[j]*Purchases[j]; m #Constraints #Minimum and maximum production requirements subject to Market {i in PROD}: sell_min[i]<=sum{j in REGIONS} amt[i,j]*Purchases[j]<=sell_max[i];...
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