Transport Task Models with Variable Supplier Availabilities

Julian Vasilev (), Rosen Nikolaev and Tanka Milkova ()
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Rosen Nikolaev: Department of Statistics and Applied Mathematics, University of Economics Varna, 9002 Varna, Bulgaria
Tanka Milkova: Department of Statistics and Applied Mathematics, University of Economics Varna, 9002 Varna, Bulgaria

Logistics, 2023, vol. 7, issue 3, 1-12

Abstract: Background : With regard to the definition of an optimal transport plan for some material flow in the logistics system in literature and practice, the classical transport task model is developed. The minimization of total transport costs is usually considered for optimality. Some modifications to the classical transport task have also been developed. Methods : The article uses the methods of linear optimization. Based on these methods, two modified transport task models have been constructed, which consider the possibility of planning in advance the quantities available from the suppliers of the transported cargo. These models are applicable in SCM for pharmaceuticals with a national logistics hub. Furthermore, a solver in MS Excel is used to determine the optimal solution of optimization models. Results : Two new (modified, extended) models of the transport task have been constructed, in which a preliminary planning of the available quantities of the transported cargo at the suppliers is made. These quantities shall be planned in such a way as to ensure a minimum total transport cost. Conclusions : By applying the proposed new transport task models, lower total transport costs for carrying out imported pharmaceuticals can be ensured compared to an application of the classical transport task model.

Keywords: optimization; transportation problems; logistics system; national logistics hub (search for similar items in EconPapers)
JEL-codes: L8 L80 L81 L86 L87 L9 L90 L91 L92 L93 L98 L99 M1 M10 M11 M16 M19 R4 R40 R41 R49 (search for similar items in EconPapers)
Date: 2023
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