Londoño, Julio C.; Tordecilla, Rafael D.; do C. Martins, Leandro; Juan, Angel A.(Springer-Verlag, 2021-07)
[EN] The vehicle routing problem with backhauls integrates decisions on product delivery with decisions on the collection of returnable items. In this paper, we analyze a scenario in which collection of items is optional-but ...
Tordecilla, Rafael D.; Copado-Méndez, Pedro J.; Panadero, Javier; Martins, Leandro do C.; Juan, Angel A.(Elsevier, 2021-12-08)
[EN] Operational problems in agri-food supply chains usually show characteristics that are scarcely addressed by traditional academic approaches. These characteristics make an already NP-hard problem even more challenging; ...
Tordecilla, Rafael D.; Copado-Méndez, Pedro J.; Panadero, Javier; Quintero-Araujo, Carlos L.; Montoya-Torres, Jairo R.; Juan, Angel A.(MDPI AG, 2021-02)
[EN] The location routing problem integrates both a facility location and a vehicle routing problem. Each of these problems are NP-hard in nature, which justifies the use of heuristic-based algorithms when dealing with ...
[EN] Depopulation of rural areas poses a range of new challenges for the provision of public services. Access to primary care centres is essential for promoting and protecting quality of life, especially for the older ...
Tordecilla, Rafael D.; Juan, Angel A.; Montoya-Torres, Jairo R.; Quintero-Araujo, Carlos L.; Panadero, Javier(Elsevier, 2021-01)
[EN] The design of supply chain networks (SCNs) aims at determining the number, location, and capacity of production facilities, as well as the allocation of markets (customers) and suppliers to one or more of these ...
Boixadós i Anglès, Mercè; Ollé Casimiro, Eva; Gutiérrez Zuheros, Maite(Universitat Politècnica de València, 2017-06-29)
[EN] The tutor in an online university like the UOC has great relevance, where personalized guidance, support, and constant advice to students are fundamental throughout their academic careers. In ...
Cardona, John F.; Castaneda, Juliana; do C. Martins, Leandro; Gandouz, Mariem; Juan, Angel A.; Franco, Guillermo(Elsevier, 2021-12-08)
[EN] This paper discusses a case study in which publicly available data of a rail freight transportation firm has been gathered, cleansed, and analyzed in order to: (i) describe the data using statistical indicators and ...