• Indexing of technical change in aggregated data 

      Kvamsdal, Sturla Furunes (Working paper;2015:6, Working paper, 2015-07)
      The Baltagi-Griffin general index of technical change for panel data has earlier been applied to aggregated data via the use of period dummy variables. Period dummies force modeling into estimation of the latent level of ...
    • Long-term sustainable and optimal management of multispecies stochastic fisheries 

      Poudel, Diwakar; Sandal, Leif Kristoffer; Steinshamn, Stein Ivar; Kvamsdal, Sturla Furunes (Working papers;01/14, Working paper, 2014-02)
      Multispecies fisheries management is the first step towards ecosystem-based fisheries management. Multispecies management accounts for a number of species and their physical, biological, and economic interactions. These ...
    • A market-based approach to manage endangered species interactions 

      Kvamsdal, Sturla Furunes; Stohs, Stephen M. (Working paper, Working paper, 2010-09)
      An economic activity interacts with an endangered species. The activity can be divided into mutually exclusive strata with different levels of interaction. Observing the activity in order to monitor interactions is costly. ...
    • Modeling the Norwegian sea ‘pelagic complex’. An application of the ensemble kalman filter 

      Ekerhovd, Nils-Arne; Kvamsdal, Sturla Furunes (Working paper;07/13, Working paper, 2013-02)
      We have estimated the parameters of a modified logistic ecosystem model of the pelagic fish stocks in the Norwegian Sea with the Ensemble Kalman Filter. Our model only contains four parameters. The model appear to capture ...
    • 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 ...
    • Spatial management of a fishery under parameter uncertainty 

      Kvamsdal, Sturla Furunes; Groves, Theodore (Working paper, Working paper, 2008-07)
      Spatial management of a fishery under parameter uncertainty is analyzed. The habitat is divided into two areas, and the effort level in the two areas may be different. The migration of biomass between the areas follows a ...
    • The ensemble kalman filter for multidimensional bioeconomic models 

      Kvamsdal, Sturla Furunes; Sandal, Leif Kristoffer (Working papers;04/14, Working paper, 2014-03)
      To serve the needs for integrating economic considerations into management decisions in ecosystem frameworks, we need to build models that capture observed system dynamics and incorporate existing knowledge of ecosystems ...
    • Up the Ante on Bioeconomic Submodels of Marine Foodwebs : a data assimilation-based approach 

      Ekerhovd, Nils-Arne; Kvamsdal, Sturla Furunes (Working paper;13/14, Working paper, 2014-09)
      While economists have discussed ecosystem-based management and similar concepts, little attention has been devoted to the art of modeling. Models of ecosystems or foodwebs that make economic analysis viable should capture ...