Sökning: "fleet sizing"

Hittade 4 uppsatser innehållade orden fleet sizing.

  1. 1. When is Electric Freight Cost Competitive? : Computational modeling and simulation of total cost of ownership for electric truck fleets

    Uppsats för yrkesexamina på avancerad nivå, Linköpings universitet/Institutionen för ekonomisk och industriell utveckling

    Författare :Anton Zackrisson; [2023]
    Nyckelord :electric freight; battery-electric trucks; total cost of ownership; decision making under deep uncertainty DMDU ; cost-competitiveness; exploratory modeling and analysis EMA ; EMA workbench; quasi-Monte Carlo method; VRP; EVRP; elektrifiering; godstransport; elektriska lastbilar; total ägandekostnad; kostnadskonkurrenskraft; ruttoptimering;

    Sammanfattning : Battery electric trucks (BETs) offer environmental benefits in terms of reduced carbon emissions and enhanced energy efficiency but have been challenged with economic viability compared to conventional internal combustion engine trucks (ICETs) caused by substantial acquisition costs, limited charging infrastructure, and concerns regarding range and payload capacity.  Previous studies focus on TCO at the vehicle or policy level but overlook the system and firm-level impacts. LÄS MER

  3. 2. The Sequential Sharing Problem in the Future City Logistics by the Multi - purpose Vehicles : An adaptive large neighbourhood search heuristic and formulations for the multi-depot pick-up and delivery problem with time windows, partial-recharging strategies, the fleet sizing and the mixed fleet of single-purpose vehicles and multi-purpose vehicles

    Master-uppsats, KTH/Transportplanering

    Författare :Haoye Chen; [2021]
    Nyckelord :Multi-purpose Vehicle; Sequential Sharing; Pick-up and Delivery Problem with Time Windows; Adaptive Large Neighbourhood Search; Partial Recharging Strategy; Multifunktions Fordon; Sekventiell Delning; Upphämtnings- och Leveransproblem med Tidsfönster; Anpassningsbar Stor Grannskapssökning; Partiell Laddningsstrategi;

    Sammanfattning : There are different transportations in the city logistics (e.g., passengers, freights, and wastes), which are handled respectively by single-purpose vehicles (SVs) of the corresponding type. The multi-purpose vehicle (MV) is a future concept whose load modules can be changed for different urban transportations. LÄS MER

  4. 3. Developing an optimization model to determine AGV fleet size given the capacity of machines and vehicles in the production industry

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för industriell ekonomi

    Författare :Milad Zaher; Ale El Ghazzi; [2021]
    Nyckelord :AGV; FMS; AGV fleet size; Optimization; Machine capacity; Production; AGV; FMS; AGV fleet size; Optimering; Maskinkapacitet; Produktion;

    Sammanfattning : Background: In the present competitive environment manufacturing firms have shifted their production from mass production to mass customization. In this line, a flexible manufacturing system (or FMS) has evolved to the changing requirements. LÄS MER

  5. 4. Bestämning av optimal fordonspark -Distribution av bitumen vid Nynäs AB

    Uppsats för yrkesexamina på grundnivå, Matematiska institutionen

    Författare :Mattias Hjort; [2005]
    Nyckelord :Mathematical optimization; systems theory; Logistics; distribution; fleet sizing; optimization; column generation; Optimeringslära; systemteori;

    Sammanfattning : Nynas produces bitumen at two refineries in Sweden. The bitumen is shipped to seven depots along the swedish coast line, and from the depots special trucks handle the transportation to customers. Recently Nynas has transformed its supply chain and closed down a few depots. LÄS MER