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Browsing Publikasjoner fra CRIStin - NTNU by Author "Fagerholt, Kjetil"

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Now showing items 1-20 of 47

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    • 2D-packing with an application to stowage in Roll-on Roll-off liner shipping 

      Hansen, Jone; Hukkelberg, Ivar; Fagerholt, Kjetil; Stålhane, Magnus; Rakke, Jørgen Glomvik (Journal article; Peer reviewed, 2016)
      Roll-on/Roll-off (RoRo) ships represent the primary source for transporting vehicles and other types of rolling material over long distances. In this paper we focus on operational decisions related to stowage of cargoes ...
    • A Decision Support Model for Routing and Scheduling a Fleet of Fuel Supply Vessels 

      Christiansen, Marielle; Fagerholt, Kjetil; Rachaniotis, Nikolaos P.; Tveit, Ingeborg; Øverdal, Marte Viktoria (Chapter, 2015)
      We consider a real fuel supply vessel routing and scheduling problem faced by a Hellenic oil company with a given fleet of fuel supply vessels used to supply customer ships outside Piraeus Port. The supply vessels are ...
    • A genetic search-based heuristic for a fleet size and periodic routing problem with application to offshore supply planning 

      Borthen, Thomas; Loennechen, Henrik; Wang, Xin; Fagerholt, Kjetil; Vidal, Thibaut (Journal article; Peer reviewed, 2017)
      This paper introduces a genetic search-based heuristic to solve an offshore supply vessel planning problem (SVPP) faced by the Norwegian oil and gas company Statoil. The aim is to help the company in determining the optimal ...
    • A New Formulation for the Combined Maritime Fleet Deployment and Inventory Management Problem 

      Dong, Bo; Bektas, Tolga; Chandra, Saurabh; Christiansen, Marielle; Fagerholt, Kjetil (Journal article; Peer reviewed, 2017)
      This paper addresses the fleet deployment problem and in particular the treatment of inventory in the maritime case. A new model based on time-continuous formulation for the combined maritime fleet deployment and inventory ...
    • A Shortest Path Heuristic for Evaluating the Quality of Stowage Plans in Roll-On Roll-Off Liner Shipping 

      Hansen, Jone R.; Fagerholt, Kjetil; Stålhane, Magnus (Journal article; Peer reviewed, 2017)
      Roll-on Roll-off shipping companies transport rolling cargo, such as cars, trucks and large construction machines. When sailing, this type of cargo must be attached to the deck using chains, to prevent damaging the cargo. ...
    • A survey on maritime fleet size and mix problems 

      Pantuso, Giovanni; Fagerholt, Kjetil; Hvattum, Lars Magnus (Journal article, 2013)
      This paper presents a literature survey on the fleet size and mix problem in maritime transportation. Fluctuations in the shipping market and frequent mismatches between fleet capacities and demands highlight the relevance ...
    • A Traveling Salesman Problem with Pickups and Deliveries and Stochastic Travel Times: An Application from Chemical Shipping 

      Elgesem, Aurora Smith; Skogen, Eline Sophie; Wang, Xin; Fagerholt, Kjetil (Journal article; Peer reviewed, 2018)
      This paper introduces a single-ship routing problem with stochastic travel times that is faced by a chemical shipping company in the Port of Houston. We take into explicit consideration the uncertain waiting times associated ...
    • A two-phase heuristic for an in-port ship routing problem with tank allocation 

      Wang, Xin; Arnesen, Mari Jevne; Fagerholt, Kjetil; Gjestvang, Magnhild; Thun, Kristian (Journal article; Peer reviewed, 2017)
      This paper addresses an in-port ship routing problem with tank allocation that arises in the chemical shipping industry. The aim is to optimize a tanker’s port call operation that integrates sequencing decisions for visiting ...
    • A variable neighbourhood search heuristic for disruption management in offshore oil and gas logistics 

      Stålhane, Magnus; Albjerk, Nils; Danielsen, Teodor; Krey, Stian; Fagerholt, Kjetil (Journal article; Peer reviewed, 2018)
      This paper studies operational planning and disruption management in offshore oil and gas logistics. A significant amount of time is currently spent on operational planning, and major costs are caused by disruptions to the ...
    • A vessel pickup and delivery problem from the disruption management in offshore supply vessel operations 

      Albjerk, Nils; Danielsen, Teodor; Krey, Stian; Stålhane, Magnus; Fagerholt, Kjetil (Journal article; Peer reviewed, 2016)
      This paper considers a vessel pickup and delivery problem that arises in the case of disruptions in the supply vessel logistics in the offshore oil and gas industry. The problem can be modelled as a multi-vehicle pickup ...
    • An adaptive large neighborhood search heuristic for the planar storage location problem: application to stowage planning for Roll-on Roll-off ships 

      Hansen, Jone Reinlund; Fagerholt, Kjetil; Stålhane, Magnus; Rakke, Jørgen Glomvik (Peer reviewed; Journal article, 2020)
      This paper considers a generalized version of the planar storage location problem arising in the stowage planning for Roll-on/Roll-off ships. A ship is set to sail along a predefined voyage where given cargoes are to be ...
    • Analysing the modal shift from road-based to coastal shipping-based distribution – a case study of outbound automotive logistics in India 

      Chandra, Saurabh; Christiansen, Marielle; Fagerholt, Kjetil (Peer reviewed; Journal article, 2019)
      This paper analyses the modal shift from a primary road-based to coastal shipping-based freight distribution. A mathematical model is developed to optimize the coastal shipping route planning under a multimodal distribution ...
    • Analyzing different designs of liner shipping feeder networks: a case study 

      Msakni, Mohamed Kais; Fagerholt, Kjetil; Meisel, Frank; Lindstad, Elizabeth (Peer reviewed; Journal article, 2020)
      This paper proposes different network structures for a real liner shipping company to serve demands between Norwegian and European continental ports. The current practice of the shipping company deploys a feeder network ...
    • Benchmark Suite for Industrial and Tramp Ship Routing and Scheduling Problems 

      Hemmati, Ahmad; Hvattum, Lars Magnus; Fagerholt, Kjetil; Norstad, Inge (Journal article; Peer reviewed, 2014)
      This paper considers a class of cargo ship routing and scheduling problems from industrial and tramp shipping and presents a wide range of benchmark instances that have been created to represent realistic planning problems ...
    • Bi-objective offshore supply vessel planning with costs and persistence objectives 

      Borthen, Thomas; Loennechen, Henrik; Fagerholt, Kjetil; Wang, Xin; Vidal, Thibault (Journal article; Peer reviewed, 2019)
      This paper introduces a bi-objective model for the offshore supply vessel planning problem (SVPP) in the oil & gas industry. The SVPP consists of determining a new weekly plan for sailing the platform supply vessels whenever ...
    • Can autonomous ships help short-sea shipping become more cost-efficient? 

      Msakni, Mohamed Kais; Akbar, Abeera; Aasen, Anna Kristine Almestad; Fagerholt, Kjetil; Meisel, Frank; Lindstad, Elizabeth (Peer reviewed; Journal article, 2020)
      There is a strong political focus on moving cargo transportation from trucks to ships to reduce environmental emissions and road congestion. We study how the introduction of a future generation of autonomous ships can be ...
    • Combined maritime fleet deployment and inventory management with port visit flexibility in roll-on roll-off shipping 

      Dong, Bo; Christiansen, Marielle; Fagerholt, Kjetil; Bektas, Tolga (Peer reviewed; Journal article, 2020)
      We consider a combined fleet deployment and inventory management problem in Roll-on Roll-off shipping. Along given trade routes there are ports with inventories that should be kept within their limits. Current planning ...
    • Combining Optimization and Simulation for Designing a Robust Short-sea Feeder Network 

      Medbøen, Carl Axel Benjamin; Holm, Magnus Bolstad; Msakni, Mohamed Kais; Fagerholt, Kjetil; Schütz, Peter (Peer reviewed; Journal article, 2020)
      Here we study a short-sea feeder network design problem based on mother and daughter vessels. The main feature of the studied system is performing transshipment of cargo between mother and daughter vessels at appropriate ...
    • Cost-Emission Relations for Maritime Logistics Support in Aquaculture 

      Slette, Hans Tobias; Asbjørnslett, Bjørn Egil; Fagerholt, Kjetil (Journal article; Peer reviewed, 2019)
      This paper presents a method for evaluation of the economic cost of reducing the emissions from a fleet operating in the aquaculture industry. The method accounts for the fact that different fleet compositions perform ...
    • A decomposition solution approach to the troops-to-tasks assignment in military peacekeeping operations 

      Chaudry, Nadia; Vermedal, Ingunn; Fagerholt, Kjetil; Fauske, Maria Fleischer; Stålhane, Magnus (Peer reviewed; Journal article, 2019)
      This paper considers the Peacekeeping Troops-to-Tasks Problem (PTTP). The PTTP deals with assigning battlegroup resources to a set of tasks associated with a given peacekeeping mission. The tasks may be spread across several ...

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