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Optimization of maintenance services of a company working in the gas metering sector is investigated. In particular, daily tasks of operators are optimized by exploiting the paradigm of vehicle routing problems with a set of predefined time windows that overlap one with the others and four competing objectives to take into account. First, an exact integer formulation is presented that can be solved...
Optimal planning for distribution networks of perishable products is addressed by means of a two‐step approach pursuing both strategic and tactical goals. The distribution network is represented as a directed graph, and discrete‐time dynamic equations are devised to model the storage and transportation of products. The first decision step consists of an optimization problem to account for a strategic...
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