Neale R. Smith

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Publications (2)0 Total impact

  • Article: A profit-maximizing economic lot scheduling problem with price optimization
    Luciano Salvietti, Neale R. Smith
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    ABSTRACT: The economic lot scheduling problem (ELSP) is a well known problem that focuses on scheduling the production of multiple items on a single machine such that inventory and setup costs are minimized. In this paper, we extend the ELSP to include price optimization with the objective to maximize profits. A solution approach based on column generation is provided and shown to produce very close to optimal results with short solution times on a set of test problems. The results are discussed and recommendations for further research are provided.
    European Journal of Operational Research.
  • Article: An approach to product variety management in the painted sheet metal industry
    Luis Jacob Escobar-Saldívar, Neale R. Smith, José Luis González-Velarde
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    ABSTRACT: In the painted sheet metal industry, offering a great variety of colors is an important competitive factor. However, an excessive number of colors can lead to excessive setup costs/times, inventory costs, and administrative complexity. In this paper, we address the case of a large manufacturer of painted sheet metal products located in northern Mexico. Several methods, both exact and heuristic, are proposed to optimize the variety of colors the firm offers. The exact method is based on mixed integer programming and the heuristic methods are variations of greedy algorithms. The methods are tested with real company data. The methods that perform better are identified and considerations are discussed which can affect the choice of method in a practical setting.
    Computers & Industrial Engineering.
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