Blar i NHH Brage på forfatter "Sandal, Leif Kristoffer"
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Stackelberg equilibria in continuous newsvendor models with uncertain demand and delayed information
Øksendal, Bernt; Sandal, Leif Kristoffer; Ubøe, Jan (Journal article; Peer reviewed, 2014)We consider explicit formulae for equilibrium prices in a continuous-time vertical contracting model. A manufacturer sells goods to a retailer, and the objective of both parties is to maximize expected profits. Demand ... -
Stochastic optimization for multispecies fisheries in the Barents Sea
Poudel, Diwakar; Sandal, Leif Kristoffer (Discussion paper;02/14, Working paper, 2014-02)This study presents a multispecies stochastic model. The model suggests optimal fishing policy for two species in a three species predator prey ecosystem in the Barents Sea. We have employed stochastic dynamic programing ... -
Stochastic Stackelberg equilibria with applications to time dependent newsvendor models
Sandal, Leif Kristoffer; Øksendal, Bernt; Ubøe, Jan (Discussion paper, Working paper, 2011-05) -
Stochastic Stackelberg equilibria with applications to time-dependent newsvendor models
Øksendal, Bernt; Sandal, Leif Kristoffer; Ubøe, Jan (Journal article; Peer reviewed, 2013)In this paper, we prove a maximum principle for general stochastic differential Stackelberg games, and apply the theory to continuous time newsvendor problems. In the newsvendor problem, a manufacturer sells goods to a ... -
A survey and analysis of outsourcing in East China
Fan, Tijun; Sandal, Leif Kristoffer; Kong, Jiehong; Li, Dandan (Discussion paper, Working paper, 2009-05)The aim of this study is to investigate whether outsourcing activities in east china are associated with a theoretical framework derived from the literature. By the methodology of Statistics Package for the Social Science ... -
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 ... -
The Ensemble Kalman Filter for Multidimensional Bioeconomic Models
Kvamsdal, Sturla F; Sandal, Leif Kristoffer (Peer reviewed; Journal article, 2015) -
The ensemble Kalman filter in bioeconomics
Kvamsdal, Sturla Furunes; Sandal, Leif Kristoffer (Discussion paper;2012:5, Working paper, 2012-05)We demonstrate the power of the Ensemble Kalman Filter in specifying ecosystem models ideal for bioeconomic analysis. Bioeconomic analysis requires models to be relatively simple, but models must still capture the nature ... -
Transfer of risk in the newsvendor model with discrete demand
Jörnsten, Kurt; Nonås, Sigrid Lise; Sandal, Leif Kristoffer; Ubøe, Jan (Journal article; Peer reviewed, 2012)In this paper we consider the transfer of risk in a newsvendor model with discrete demand. We view the newsvendor model as a leader/follower problem where the manufacturer (leader) decides the wholesale price and the ...