Sökning: "heltalsoptimering"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet heltalsoptimering.

  1. 1. An Optimization Model for Electric Vehicle Routing with Tractor Swapping

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Alexander Strid; Daniel Liu; [2022]
    Nyckelord :Vehicle Routing Problem VRP ; tractor swapping; electric VRP; rich VRP; heavy goods vehicles; mixed-integer linear programming MILP ; applied mathematics; ruttoptimering; traktorbyte; elektriska lastbilar; tunga lastbilar; linjär heltalsoptimering; tillämpad matematik;

    Sammanfattning : The purpose of this thesis is to investigate how tractor swapping can be implemented in Vehicle Routing Problems (VRP) with electric heavy goods vehicles, and to evaluate how a model that allows for tractor swapping performs, in terms of schedule cost, against a model that does not. Hence, this thesis introduces a new rich VRP variant which includes tractor swapping, as well as time windows, pickup and delivery, and electric vehicles. LÄS MER

  3. 2. Optimal Multi-Skilled Workforce Scheduling for Contact Centers Using Mixed Integer Linear Programming : A Method to Automatize Workforce Management

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Sara Eriksson; [2020]
    Nyckelord :Optimization; systems theory; mathematics; scheduling; mixed integer linear programming; multi-skilled; Optimering; systemteori; matematik; schemaläggning; mixad linjär heltalsoptimering; multikompetent;

    Sammanfattning : This master thesis in optimization and systems theory is a development of two different optimization models formulated to schedule multi-skilled agents for contact centers depending on the forecasted demand, assigned by Teleopti. Four mixed integer linear programming models are created with the optimization programming language GAMS and solved by the internet based solver NEOS. LÄS MER

  4. 3. Multi-Objective Mixed-Integer Linear Optimisation of Aircraft Load Planning

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Kristján Óttar Rögnvaldsson; [2019]
    Nyckelord :;

    Sammanfattning : A general multi-objective optimisation model is developed for the load planning decision process of a bulk loaded commercial aircraft, using the Airbus A321 fitted with additional fuel tanks as a baseline platform. The model’s input is a specific set of load items, with associated quantities, mass and volume. LÄS MER

  5. 4. Skärmönstergenerering för 2D-cutting stock problem : Råmaterialsoptimering med fyra olika optimeringsmodeller för Olofsfors AB

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Anna Eriksson; Fredrik Kristoffersson; [2018]
    Nyckelord :Tvådimensionellt cutting stock problem; skärmönster- generering; skärmönsteralgoritm; heltalsoptimering; branch and bound; materialoptimering;

    Sammanfattning : Olofsfors AB beställer idag stålplåtar, remsor och stänger av stålleveran- törer för sin produktion av skop- och vägstål samt skogsband. Stålremsorna för produktion av skop- och vägstål beställs i dimensioner som är redo att skä- ras endimensionellt och vidarebehandlas till skopstålsdetaljer i fabriken. LÄS MER

  7. 5. Optimization of Production Scheduling in the Dairy Industry

    Kandidat-uppsats, KTH/Optimeringslära och systemteori

    Författare :Oskar Alvfors; Fredrik Björelind; [2015]
    Nyckelord :Mathematical optimization; Mixed integer programming; Production scheduling; Lot-sizing; Shift work.;

    Sammanfattning : This thesis presents a case study of mathematical production scheduling optimization applied on Arla Foods AB’s production of dairy products. The scheduling was performed as a possible remedy for problems caused by overcrowded finished goods warehouse. LÄS MER