search
Include:
9 Research products, page 1 of 1

Relevance
arrow_drop_down
  • Open Access
    Authors: 
    Francisco A. Ortega; Juan A. Mesa; Ramón Piedra-De-La-Cuadra; Miguel A. Pozo;
    Publisher: WIT Press

    In many transit systems, operators use skip–stop strategies to reduce travel time of particular train services by not stopping (skipping) at less densely populated stations. This decision of omitting some stops reduces the travel time for the users within the vehicle an...

  • Open Access
    Authors: 
    Gilbert Laporte; Francisco A. Ortega; Miguel A. Pozo; Justo Puerto;
    Publisher: Elsevier

    The Transit Network Timetabling and Scheduling Problem (TNTSP) aims at determining anoptimal timetable for each line of a transit network by establishing departure and arrivaltimes at each station and allocating a vehicle to each timetable. The current models for thepla...

  • Open Access
    Authors: 
    Eva Barrena; David Canca; Francisco A. Ortega; Ramón Piedra-De-La-Cuadra;
    Publisher: International Information and Engineering Technology Association
    Country: Spain

    The problem of managing selective collection of waste using containers inside historic city centres can be performed in three sequential phases: first, locating containers along the streets; then, determining the minimum fleet size required to perform all collecting ser...

  • Open Access
    Authors: 
    Ortega Riejos, Francisco Alonso; Piedra de la Cuadra, Ramón; Ventura Pérez, Soly;
    Publisher: WIT Press

    Urban sprawl is a phenomenon that leads to an extensive use of motorized transport modes with negative environmental impacts such as congestion, time wasted in traffic jams, air and noise pollution and additional costs incurred by using non-renewable energy. Increasing ...

  • Publication . Conference object . Part of book or chapter of book . 2018
    Open Access
    Authors: 
    Francisco A. Ortega; Juan A. Mesa; Miguel A. Pozo;
    Publisher: Springer International Publishing

    Transportation on-demand represents a mode of transport in which a set of users formulates transport requests between pickup and delivery points, which must be served by means of vehicles of a given capacity. When the items to be transported are people, it is necessary ...

  • Open Access
    Authors: 
    López-de-los-Mozos, M.C.; Mesa, Juan A.; Schöbel, Anita;
    Publisher: Elsevier

    In this paper we consider a trip covering location model in a mixed planar-network space. An embed- ded network in the plane represents an alternative transportation system in which traveling is fasterthan traveling within the plane. We assume that the demand to be cove...

  • Open Access
    Authors: 
    Marseglia, Guido; Medaglia, Carlo Maria; Ortega, Francisco A.; Mesa, Juan A.;
    Publisher: MDPI AG

    The achievement of some of the Sustainable Development Goals (SDGs) from the recent 2030 Agenda for Sustainable Development has drawn the attention of many countries towards urban transport networks. Mathematical modeling constitutes an analytical tool for the formal de...

  • Open Access
    Authors: 
    Alicia De-Los-Santos; Gilbert Laporte; Juan A. Mesa; Federico Perea;
    Publisher: Springer Science and Business Media LLC
    Country: Spain

    [EN] The problem studied in this paper takes as input data a set of lines forming a railway network, and an origin¿destination (OD) matrix. The OD pairs may use either the railway network or an alternative transportation mode. The objective is to determine the frequency...

  • Open Access English
    Authors: 
    Perea, Federico; Menezes, Mozart B. C.; Mesa, Juan A.; Rubio-Del-Rey, Fernando;
    Publisher: Springer-Verlag
    Country: Spain

    [EN] In this paper we analyze the computational complexity of transportation infrastructure network design problems, in the presence of a competing transportation mode. Some of these problems have previously been introduced in the literature. All problems studied have a...