• A Bellman approach to periodic optimization problems 

      Kvamsdal, Sturla F.; Maroto, José M.; Morán, Manuel; Sandal, Leif K. (Discussion paper;19/16, Working paper, 2016-11-30)
      We consider an infinite horizon optimization problem with arbitrary but finite periodicity in discrete time. The problem can be formulated as a fix-point problem for a contraction operator, and we provide a solution scheme ...
    • An analysis of maintenance schedules for public facilities 

      Hopland, Arnt Ove; Kvamsdal, Sturla F; Sandal, Leif Kristoffer (Journal article; Peer reviewed, 2019)
      We present a flexible, formal framework for maintenance scheduling for public facilities. Key features of the model include an accelerating deterioration scheme, a general utility measure, and real estate market effects ...
    • Backhauling in forest transportation : models, methods and practical usage 

      Carlsson, Dick; Rönnqvist, Mikael (Discussion paper, Working paper, 2006)
      Transportation planning in forestry is divided into strategic, tactical and operational depending on the length of the planning horizon. We consider a tactical problem of finding efficient backhauling routes. Given a set ...
    • Interview Scheduling: An Integer Programming Approach 

      Braathen, Christian (Discussion paper;10/22, Working paper, 2022-04-21)
      This article provides a general meeting scheduling model to schedule en-masse interviews over multi-day events. Creating such meeting schedules is a complicated, time-consuming task that usually requires considerable manual ...
    • Optimization of age-structured bioeconomic model: recruitment, weight gain and environmental effects 

      Ni, Yuanming (Discussion paper;4/19, Working paper, 2019-09-03)
      More and more fishery researchers begin to acknowledge that one-dimensional biomass models may omit key information when generating management guidelines. For the more complicated age-structured models, numerous parameters ...
    • The premium of marine protected areas : a simple valuation model 

      Kvamsdal, Sturla Furunes; Sandal, Leif Kristoffer (Working paper, Working paper, 2007-03)
      Marine Protected Areas are considered as a hedging tool against some of the uncertainties that trouble many fisheries today. Such tools are always connected with a cost; a premium. An optimal harvest rule is combined with ...
    • The premium of marine protected areas : a simple valuation model 

      Kvamsdal, Sturla Furunes; Sandal, Leif Kristoffer (Discussion paper, Working paper, 2007-03)
      Marine Protected Areas are considered as a hedging tool against some of the uncertainties that trouble many fisheries today. Such tools are always connected with a cost; a premium. An optimal harvest rule is combined ...
    • The value of timecharter optionality in the drybulk market 

      Ådland, Roar Os; Prochazka, Vit (Peer reviewed; Journal article, 2020)
      Using an optimization model on a network with stochastic travel times we estimate the value of flexible worldwide redelivery compared to the more constrained Atlantic ocean option. We evaluate the value of the redelivery ...