vector x A refers to assignment values, i.e., x A ij =1 if customer j is assigned to facility i and x A ij = 0, otherwise, for all ij ∈ A R. vector z ^ is set to one if facility i is open, and to zero otherwise.
Constraint (5) guarantees that point i is assigned to facility j, when the facility is established in node j.
Constraint (13) guarantees that in scenario k, demand i can be assigned to facility j when facility was opened.
where c ijkl is the cost of assigning facility i in location k and simultaneously facility j in location l, and x ik = 1 if location k is assigned to facility i; otherwise, x ik = 0. Also, x jl = 1 if location l is assigned to facility j; otherwise, x jl = 0.
(y_{ijk})—if demand node i is assigned to facility j under scenario k, set (y_{ijk} = 1), otherwise, set (y_{ijk} = 0); (x_{,j})—if facility site j locates at potential, set (x_{,j} = 1), otherwise, set (x_{,j} = 0). nu_{k}), under the conditions of compromise locations: nu_{k} = sumlimits_{i} {sumlimits_{j} {h_{ik} d_{ijk} y_{ijk} } }.
From the perspective of a person at Y, service at facility A would be associated with a higher congestion cost and a further distance, thus he would neither be assigned to facility A nor choose that facility.
The decision variables are x ij, which is the percentage of time assigned to facility j from patient or community i, for each i = 1,…, n and j = 1,…, m.
Criticism of how many screeners are assigned to various facilities should be directed at those who make the decisions: officials of the Transportation Security Administration.
student who hoped to work in animation during her unpaid internship said she was instead assigned to the facilities department and ordered to wipe the door handles each day to minimize the spread of swine flu.
While in the Sea Org, Saxton spent the majority of his time assigned to Scientology facilities in Los Angeles.
Rather, he says, the higher numbers appear to stem from the process by which inmates are assigned to correctional facilities, a behind-closed-doors task usually carried out by prison administrators.
