Andreas Asheim

Journal publications

• Asheim, Andreas; Nilsen, Sara Marie; Carlsen, Fredrik; Næss-Pleym, Lars E.; Uleberg, Oddvar; Dale, Jostein; Bjørnsen, Lars Petter Bache-Wiig; Bjørngaard, Johan Håkon. (2019) The effect of emergency department delays on 30-days mortality in Central Norway. European journal of emergency medicine.
• Asheim, Andreas; Nilsen, Sara Marie; Toch-Marquardt, Marlen; Anthun, Kjartan Sarheim; Johnsen, Lars Gunnar; Bjørngaard, Johan Håkon. (2018) Time of admission and mortality after hip fracture – a detailed look at the weekend effect in a nationwide study of 55 211 hip fracture patients in Norway. Acta Orthopaedica. vol. 89.
• Krane-Gartiser, Karoline; Asheim, Andreas; Fasmer, Ole Bernt; Morken, Gunnar; Vaaler, Arne; Scott, Jan. (2018) Actigraphy as an objective intra‑individual marker of activity patterns in acute‑phase bipolar disorder: a case series. International journal of bipolar disorders. vol. 6 (8).
• Nørsett, Syvert Paul; Asheim, Andreas. (2014) Regarding the absolute stability of Størmer-Cowell methods. Discrete and Continuous Dynamical Systems. Series A. vol. 34 (3).
• Asheim, Andreas; Svensson, U. Peter. (2013) An integral equation formulation for the diffraction from convex plates and polyhedra. Journal of the Acoustical Society of America. vol. 133 (6).
• Nørsett, Syvert Paul; Asheim, Andreas. (2013) REGARDING THE ABSOLUTE STABILITY OF STORMER-COWELL METHODS. Discrete and Continuous Dynamical Systems. Series A. vol. 34 (3).
• Svensson, U. Peter; Asheim, Andreas. (2013) Time-domain formulation of an edge source integral equation. Proceedings of meetings on acoustics. vol. 19.
• Svensson, U. Peter; Asheim, Andreas. (2012) An edge-source integral equation for the calculation of scattering (Abstracts). Journal of the Acoustical Society of America. vol. 132 (3).
• Asheim, Andreas; Huybrechs, Daan. (2010) Asymptotic Analysis of Numerical Steepest Descent with Path Approximations. Foundations of Computational Mathematics. vol. 10 (6).
• Asheim, Andreas; Huybrechs, Daan. (2010) Local solutions to high-frequency 2D scattering problems. Journal of Computational Physics. vol. 229 (14).
• Asheim, Andreas; Svensson, U. Peter. (2010) Efficient evaluation of edge diffraction integrals using the numerical method of steepest descent. Journal of the Acoustical Society of America. vol. 128 (4).
• Asheim, Andreas. (2008) A combined Filon/asymptotic quadrature method for highly oscillatory problems. BIT Numerical Mathematics. vol. 48 (3).

Artistic productions

• Halle, Kari Krizak; Nilsen, Sara Marie; Asheim, Andreas. (2018) Lognormalskjerf. -. 2018.

Part of book/report

• Svensson, U. Peter; Martin Roman, Sara-Regina; Asheim, Andreas. (2016) Efficient edge source approach to the modeling of multi-edge noise barrier tops. Proceedings of the INTER-NOISE 2016. 45th International Congress and Exposition on Noise Control Engineering, August 21 - 24, 2016, Hamburg, Germany.
• Svensson, U. Peter; Asheim, Andreas. (2011) Edge-diffraction based integral equation for the scattering from convex rigid polyhedra. Proceedings of Forum Acusticum 2011.
• Svensson, U. Peter; Asheim, Andreas. (2010) Computing diffraction integrals with the numerical method of steepest descent. Proceedings of the 20th International Congress on Acoustics, ICA 2010.

Report/dissertation

• Asheim, Andreas; Svensson, U. Peter. (2012) An integral equation formulation for the diffraction from convex plates and polyhedra. 2012.
• Asheim, Andreas. (2010) Numerical Methods for Highly Oscillatory Problems. 2010. Doktoravhandlinger ved NTNU (115).