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Visualitza Articles (Departament d'Economia) per autoria "Ramalhinho-Lourenço, Helena"

Visualitza Articles (Departament d'Economia) per autoria "Ramalhinho-Lourenço, Helena"

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  • Ferrer, Alberto; Guimarans, Daniel; Ramalhinho-Lourenço, Helena; Juan, Angel A. (Elsevier, 2016)
    This paper analyzes a realistic variant of the Permutation Flow-Shop Problem (PFSP) by considering a non-smooth objective function that takes into account not only the traditional makespan cost but also failure-risk costs ...
  • Grasas, Àlex; Juan, Angel A.; Faulin, Javier; De Armas, Jésica; Ramalhinho-Lourenço, Helena (Elsevier, 2017)
    Randomized heuristics are widely used to solve large scale combinatorial optimization problems. Among the plethora of randomized heuristics, this paper reviews those that contain biased-randomized procedures (BRPs). A BRP ...
  • Pagès Bernaus, Adela; Ramalhinho-Lourenço, Helena; Juan, Angel A.; Calvet Mir, Laura (Wiley, 2017)
    E‐Commerce activity has been increasing during recent years, and this trend is expected to continue in the near future. e‐Commerce practices are subject to uncertainty conditions and high variability in customers’ demands. ...
  • Portugal, Rita; Ramalhinho-Lourenço, Helena; Paixao, José P. (Springer, 2008)
    The Drivers Scheduling Problem (DSP) consists of selecting a set of duties for vehicle drivers, such as bus, train and boat drivers or plane pilots, for the transportation of passengers or goods. This is a complex problem ...
  • Giménez Thomsen, Cristina; Ramalhinho-Lourenço, Helena (Emerald, 2008)
    Purpose The purpose of this paper is to analyse the interaction of two topics: supply chain management (SCM) and the internet. Merging these two fields is a key area of concern for contemporary managers and researchers. ...
  • Coelho, Vitor Nazário; Oliveira, Thays A.; Coelho, Igor Machado; Coelho, Bruno N.; Fleming, Peter J.; Guimarães, Frederico G.; Ramalhinho-Lourenço, Helena; Souza, Marcone Jamilson Freitas; Talbi, El-Ghazali; Lust, Thibaut (Elsevier, 2016)
    Cross-selling campaigns seek to offer the right products to the set of customers with the goal of maximizing expected profit, while, at the same time, respecting the purchasing constraints set by investors. In this context, ...
  • Coelho, Vitor Nazário; Grasas, Àlex; Ramalhinho-Lourenço, Helena; Coelho, Igor Machado; Souza, Marcone Jamilson Freitas; Cruz, R. C. (Elsevier, 2016)
    Distribution planning is crucial for most companies since goods are rarely produced and consumed at the same place. Distribution costs, in addition, can be an important component of the final cost of the products. In this ...
  • De Armas, Jésica; Ramalhinho-Lourenço, Helena; Reynal-Querol, Marta (Public Library of Science (PLoS), 2022)
    The location of primary public schools in urban areas of developing countries is the focus of this study. In such areas, new schools and modification of the current schools are required, and this process should be developed ...
  • Fabri Lima, Marcelus; Ramalhinho-Lourenço, Helena (Wiley, 2021)
    In this work, we consider the internal logistics processes in the car assembling company SEAT S.A (where SEAT is Sociedad Española de Automóviles de Turismo). We focus on the design of the supplying routes from the warehouse ...
  • Fabri Lima, Marcelus; Ramalhinho-Lourenço, Helena; Oliver Riera, Miquel; Muñoz, Juan Carlos (Taylor & Francis, 2020)
    This work focuses on internal logistics (IL), which is defined as the flows of materials inside the same business or the same plant. We centre on the IL activities of a car-assembling company. The main objective is to ...
  • Martins, Pedro; Ladrón de Guevara, Antonio; Ramalhinho-Lourenço, Helena (Wiley, 2014)
    This paper focuses on iterated local search heuristics for the maximum cut‐clique (MCC, or clique neighborhood) problem. Given an undirected graph G = (V,E) and a clique C of G, the cut‐clique is the set of edges running ...
  • Grasas, Àlex; Ramalhinho-Lourenço, Helena; Pessoa, Luciana S; Resende, Mauricio GC; Caballé, Imma; Barba, Nuria (BioMed Central, 2014)
    Background: Blood samples are usually collected daily from different collection points, such hospitals and health centers, and transported to a core laboratory for testing. This paper presents a project to improve the ...
  • De Armas, Jésica; Ramalhinho-Lourenço, Helena; Lalla-Ruiz, Eduardo; Melian-Batista, Belen; Moreno-Vega, Marcos (Hindawi, 2019)
  • Vieira, Bruno; De Armas, Jésica; Ramalhinho-Lourenço, Helena (Elsevier, 2022)
    With the continuous increase in longevity worldwide, the elderly population requiring home health and social care has been continuously growing over the years. Planning combined home health and social services has been ...
  • De Armas, Jésica; Rodríguez-Pereira, Jessica; Vieira, Bruno; Ramalhinho-Lourenço, Helena (MDPI, 2021)
    The combination of increasing life spans and low birth rates is accelerating the pace at which the share of older adults in the population worldwide is rising. As people age, their autonomy tends to decrease which leads ...
  • Schettini, Tommaso; Malucelli, Federico; Ramalhinho-Lourenço, Helena (Springer, 2023)
    In this paper, we introduce the Pick and Place Packaging Problem (P4), for optimally scheduling a packaging system with one input conveyor (pick) and one output conveyor (place). We give a formal definition of the underlying ...
  • Grasas, Àlex; Juan, Angel A.; Ramalhinho-Lourenço, Helena (Taylor & Francis, 2014)
    Iterated Local Search (ILS) is one of the most popular single-solution-based metaheuristics. ILS is recognized by many authors as a relatively simple yet efficient framework able to deal with complex combinatorial optimization ...
  • Pérez Vázquez, María Elena; Gento Municio, Angel Manuel; Ramalhinho-Lourenço, Helena (Elsevier, 2007)
    PRECON S.A. is a manufacturing company devoted to produce prefabricated concrete parts for several industries as railway transportation and agricultural industries. Recently, PRECON S.A. signed a contract with RENFE, the ...
  • Grasas, Àlex; Ramalhinho-Lourenço, Helena (Emerald, 2015)
    Purpose The purpose of this paper is to present a problem-based learning (PBL) activity that uses a decision support system (DSS) to teach one of the most fundamental topics in distribution planning: vehicle routing. ...
  • Fabri Lima, Marcelus; Ramalhinho-Lourenço, Helena; de Souza, Mauricio C.; Ravetti, Martin G. (Hindawi, 2019)
    This work aims to present a methodology to support a company in the automotive business on scheduling the jobs on its final processes. These processes are: (i) checking the final product and (ii) loading the dispatch trucks. ...

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