Sökning: "Railway scheduling"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden Railway scheduling.

  1. 1. Simultaneous scheduling of railway maintenance and trains : Modelling and solving train interactions close to a maintenance operation

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Pauline Vaillant; [2023]
    Nyckelord :Optimization; Linear programming; Heuristics; Railway scheduling; Maintenance planning; Optimering; Linjärprogrammering; Heuristik; Järnvägsplanering; Underhållsplanering;

    Sammanfattning : Rail transport plays a key role in the mobility of passengers and goods. It is expected to grow the decarbonization of society. In that context, it is important to use the railway network efficiently, and jointly planning trains and network maintenance allows for better use of resources. LÄS MER

  3. 2. Efficiently Solving the Exact Cover Problem in OpenMP

    Kandidat-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Leo Hall; [2023]
    Nyckelord :Exact Cover; openmp; parallelization;

    Sammanfattning : The exact cover problem is an NP-complete problem with many widespread use cases such as crew scheduling, railway scheduling, benchmarking as well as having applications in set theory. Existing algorithms can be slow when dealing with large datasets however. LÄS MER

  4. 3. An ILP-model for the Train platforming problem

    Master-uppsats, Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Författare :Simon Calderon; [2023]
    Nyckelord :Optimization; Integer programming; Train platforming; Train scheduling; Optimering; Heltalsprogrammering; Tåg; Järnväg; Schemaläggning;

    Sammanfattning : The goal of this thesis is to create an optimization model to optimize the routing of trains within railway stations. This problem is known as the train platforming problem, and the model we present is an integer programming model. By this model we aim to optimize factors such as walking distance, switch usage or platform usage. LÄS MER

  5. 4. Holistic embedding of equivalent conicity in wheelset maintenance

    Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesign

    Författare :Philipp Linzbichler; [2023]
    Nyckelord :Railway Operation; Equivalent Conicity; Wheelset Maintenance; Smart Maintenance; Data Analysis; Järnvägsdrift; Ekvivalent Konicitet; Hjulset Underhåll; Smart Underhåll; Dataanalys;

    Sammanfattning : With continuing digitization of railways an increasing number of data is recorded but particularly in operation advanced analysis tends to be partially rudimentary. Yet, it is essential to implement sophisticated processing for all records in order to develop more purposeful and predictive vehicle maintenance strategies that adhere to the increasing requirements imposed by the homologation. LÄS MER

  7. 5. ”Man är digital – men är man det på rätt sätt?” : Relationen mellan digital transformation, kommunikation och organisationskultur på SJ AB

    Master-uppsats, Uppsala universitet/Institutionen för informatik och media

    Författare :Ebba Michaelsdotter; Signe Cullhed; [2022]
    Nyckelord :digital transformation; organisationskultur; kommunikation; kulturella attribut; digital mognad; organisatorisk struktur; schemaplanering;

    Sammanfattning : Many organizations are striving to reach the benefits that digital transformation brings, as there are clear benefits to be gained from digitizing an organization. However, a vast majority of companies fail to implement digital technology. LÄS MER