Mathematical Problems in Engineering / 2013 / Article / Tab 2

Research Article

Using Metaheuristic and Fuzzy System for the Optimization of Material Pull in a Push-Pull Flow Logistics Network

Table 2

Applied notations in the problem.

NotationDescription

Mean value of distribution
Standard deviation
Random variable
Product type, ;
Time, ; hours
Average local throughput time (in OEM at )
Average global throughput time at
Total delivery of product at time
Membership value of fuzzy set
Lsize Capacity of a pallet [1 10]
Upper bound of the fuzzy number
Maximum OEM inventory
Importance weights; may be chosen arbitrarily by decision-maker
Fitness value of chromosome
Selection probability value of chromosome
TeCurrent temperature in SA
The least temperature in SA
The cycle number in the loop of SA
Fuzzy set
NPallet Number of pallets in system 10 60
Lower bound of the fuzzy number

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