Et profilbilde

Førsteamanuensis
Kristian Thorsen { "honorific-suffix": "Førsteamanuensis", "fn": "Kristian Thorsen", "tel": "Telefon: 51832056", "email": "kristian.thorsen@uis.no" }

Avdeling/enhet Det teknisk- naturvitenskapelige fakultet
Institutt/senter Institutt for data- og elektroteknikk
Rom KE E-404

Forskningsområder

-----Modeling and control in biophysical systems-----

- Cybernetics and control theory in biochemical, biophysical, and physiological processes.

Control theory is applied to enhance understanding of biochemical mechanisms behind robust adaptation and homeostasis, especially the ability to perform homeostasis under oscillatory conditions. The work includes identifying model structures leading to robust homeostasis and/or oscillatory performance together with simulation of nonlinear systems and nonlinear analysis of biophysical systems from a control theoretic point of view.


-----Transmission and spread of antibacterial resistance in wastewater plants-----

This is a EU project under the Joint Programme Initiative on Antimicrobial Resistance (JPI-AMR). The project is called: Wastewater treatment plants as critical reservoirs for resistance genes (Gene-gas), and is performed in collaboration with top international groups at Lund University (Sweden) and Statens Serum Institute, Copenhagen (Denmark). The goal is to develop mathematical models for analysis of experimental data on dynamics of antimicrobial resistance genes in wastewater systems, and apply these model to predict fate under sludge treatment and applications.

Utvalgte publikasjoner

  • G. Risvoll, K. Thorsen, P. Ruoff, T. Drengstig (2017). Variable setpoint as a relaxing component in physiological control. Physiological Reports. ISSN 2051-817X. Volum 5. Hefte 17. DOI: 10.14814/phy2.13408.
  • K. Thorsen, T. Drengstig, Peter Ruoff (2014), Transepithelial glucose transport and Na+/K+ homeostasis in enterocytes: an integrative model. American Journal of Physiology - Cell Physiology, 307, pp. C320?337.
  • K. Thorsen, P. Ruoff and T. Drengstig (2013), Control theoretic properties of physiological controller motifs. IEEE International Conference on System Science and Engineering (ICSSE 2013), Budapest, Hungary.
  • T. Drengstig, I. W. Jolma, X. Y. Ni, K. Thorsen, X. M. Xu and P. Ruoff (2012), A Basic Set of Homeostatic Controller Motifs. Biophysical Journal, Volume 103, Issue 9, 2000-2010, doi:10.1016/j.bpj.2012.09.033
  • T. Drengstig, X. Y. Ni, K. Thorsen, I. W. Jolma, and P. Ruoff (2012), Robust Adaptation and Homeostasis by Autocatalysis. J. Phys. Chem. B, 116, pp. 5355-5363.

Pågående forskning

Arbeidserfaring

Teaching experience (full courses)

  • Embedded design (ELE340): Structured design of embedded systems, hardware and software. Fifth semester bachelor degree in electrical engineering. Autumn 2016 and 2017
  • Advanced control systems and robotics (ELE600): Second semester master degree in electrical engineering. Spring 2017.
  • Introduction to math and physics 1 (YMF100): First semester bachelor degree in electrical engineering (Y-vei). Autumn 2013
  • Introduction to math and physics 2 (YMF110): Second semester bachelor degree in electrical engineering (Y-vei). Spring 2014 and 2016.

Board positions

  • 2013-2015     University Board, University of Stavanger. Board member of the central university board at UiS.  Representing PhD candidates and temporary employed staff.
  • 2012-2013    University Board, University of Stavanger. Deputy board member of the central university board at UiS. Representing PhD candidates and temporary employed staff.
  • 2013-2014      Department Board, Dep. of El. Eng. and Comp. Sci. Board member of the department board at the Department of Electrical Engineering and Computer Science at UiS. Representing PhD candidates and temporary employed staff.

Vitenskapelige publikasjoner (fra CRISTin)

  • Thorsen, Kristian; Drengstig, Tormod; Ruoff, Peter (2015). Controller Motifs for Homeostatic Regulation and Their Applications in Biological Systems. Universitetet i Stavanger. ISBN 978-82-7644-628-9. 300 s.
  • Thorsen, Kristian (2018). Work at the UiS group for biological cybernetics: Building a controller for regulation of intracellular copper in yeast.. University of California Merced; 2018-04-04 - 2018-04-05.
  • Stokka, Svein H.; Jakobsen, Kim A.; Thorsen, Kristian; Drengstig, Tormod (2017). Physiological based Modeling and Control of an Industrial Tank Process. 2017-09-25 - 2017-09-27.
  • Tveit, Daniel Myklatun; Thorsen, Kristian (2017). Passivity-based analysis of biochemical networks displaying homeostasis. 2017-09-25 - 2017-09-27.
  • Thorsen, Kristian (2016). Kaosteori - deterministiske system med uventet og irregulær oppførsel.. ABB Robotics; 2016-05-13.
  • Thorsen, Kristian (2016). The tendency against change: control and regulation as a condition for life.. i/o/lab senter for framtidskunst; 2016-08-12.
  • Thorsen, Kristian; Risvoll, Geir; Mazumder, Mostafizur; McMillen, David R. (2016). A controller for regulation of intracellular copper in S. cerevisiae. 2016-09-16 - 2016-09-20.
  • Thorsen, Kristian; Risvoll, Geir; Tveit, Daniel Myklatun; Ruoff, Peter; Drengstig, Tormod (2016). Tuning of Physiological Controller Motifs. 2016-09-12 - 2016-09-16.
  • Agafonov, Oleg; Selstø, Christina Helen; Thorsen, Kristian; Xu, Xiang Ming; Drengstig, Tormod; Ruoff, Peter (2015). The Organization of Controller Motifs Leading to Robust Plant Iron Homeostasis. The French Society of Plant Biologists; 2015-07-05 - 2015-07-09.
  • Thorsen, Kristian (2015). Building controller motifs to manipulate copper tolerance and homeostasis in S. cerevisiae.. CORE - Centre for Organelle Research; 2015-06-05.
  • Thorsen, Kristian; Drengstig, Tormod; Ruoff, Peter; Gundersen, Ina (2015). Nytt sykehus Ullandhaug - Jubler for plasseringen. Stavanger Aftenblad. [Avis]; 2015-11-28.
  • Thorsen, Kristian; Taraldsen, Lars; Andersen, Ina (2015). Automatisering - De mest utsatte ingeniørene: Derfor frykter de ikke automatiseringen. Teknisk Ukeblad. [Fagblad]; 2015-05-22.
  • Drengstig, Tormod; Jolma, Ingunn Westvik; Thorsen, Kristian; Ruoff, Peter (2013). Fysiologiske reguleringsmekanismer.
  • Thorsen, Kristian (2013). Kybernetikk og fysiologi - biokjemiske kontrollere. Stavanger Offshore Tekniske Skole; 2013-03-12.
  • Thorsen, Kristian; Drengstig, Tormod; Ruoff, Peter (2013). Integrative modeling of glucose transport and homeostasis in enterocytes. Cold Spring Harbor Laboratory; 2013-03-19 - 2013-03-22.
  • Thorsen, Kristian (2012). Kybernetikk i fysiologi. Norsk Forening for Autmatisering; 2012-10-24 - 2012-10-25.
  • Thorsen, Kristian; Drengstig, Tormod; Ruoff, Peter (2012). Modeling and simulation of intestinal nutrient uptake. The International Society for Systems Biology; 2012-08-19 - 2012-08-23.