Nils Damm Christophersen

Professor Emeritus - Department for Informatics

Norwegian version of this page

Email nilsch@ifi.uio.no

Phone +47 22852406

Username

Visiting address Gaustadalléen 23B Ole-Johan Dahls hus 0373 Oslo

Postal address Postboks 1080 Blindern 0316 Oslo

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Academic Interests

My background is in applied mathematics and statistics particularly within digital signal processing. In addition, I have a long term interest in innovation and entrepreneurship in the university sector.

Higher education and employment history

Employment

2006 – 2009 Board member at the University of Oslo
2003 – 2004 Dean of studies, Faculty of Mathematics and Natural Sciences
2000 – 2006 Group leader Digital signal and image analysis (DSB).
1998 – 1999 Head, Department of informatics
1997 – 1998 Visiting scientist, Department of Statistics, Stanford University
1991 – Professor, Department of informatics, University of Oslo
1988 – 1989 Visiting scientist, Institute of Hydrology, UK
1986 – 1991 Adjunct professor Department of informatics, University of Oslo
1978 – 1991 Research scientist, Center for industrial Research/SINTEF, Oslo
1975 – 1977 Associate professor, Department of physics, University of Oslo
1972 – 1975 Research scientist, Norwegian Defence Research Establishment

Education:

1983 Dr. Philos. (PhD) (environmental modeling of impacts of acid rain), Center for Industrial Research (SINTEF)/Department of informatics, University of Oslo
1972 Cand. real. (M.Sc.) in cybernetics, Norwegian Defense Research Establishment /Department for Physics, University of Oslo

Honoraria

Highly cited scientist as defined by the Institute for Scientific Information (ISI) - http://highlycited.com/ (archives 2001 list)
Awarded the University of Oslo Innovation prize for 2016 - http://www.uio.no/om/tall-og-fakta/uio-priser/universitetsstyrets-priser/innovasjonsprisen/index.html

CV with list of publications

http://heim.ifi.uio.no/~nilsch/CV_Nov_2016.pdf

Tags: applied mathematics, statistics, innovation, entrepreneurship

For a complete list of publications, see CV

Dahl, Tobias Gulden; Pereira, SS; Christophersen, Nils Damm & Gesbert, David (2007). Intrinsic subspace convergence in TDD MIMO communication. IEEE Transactions on Signal Processing. ISSN 1053-587X. 55. doi: 10.1109/TSP.2007.896901.
Dahl, Tobias Gulden; Lingjærde, Ole Christian & Christophersen, Nils Damm (2005). Local-ICA: independent component analysis for sources with non-stationary amplitudes. In Bouzerdoum, A. & Beghdadi, A. (Ed.), Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. IEEE conference proceedings. ISSN 0-7803-9243-4.
Dahl, Tobias Gulden; Christophersen, Nils Damm & Gesbert, David (2004). Blind MIMO Transmission based on the Algebraic Power Method. IEEE Transactions on Signal Processing. ISSN 1053-587X. 52(9), p. 2424–2431. doi: 10.1109/TSP.2004.832000.
Dahl, T; Christophersen, Nils Damm & Gesbert, David (2004). Blind MIMO eigenmode transmission based on the algebraic power method. IEEE Transactions on Signal Processing. ISSN 1053-587X. 52, p. 2424–2431.
Bølviken, Erik; Acklam, Peter John; Christophersen, Nils Damm & Størdal, J.M. (2001). Monte-Carlo filters for non-linear state estimation. Automatica. ISSN 0005-1098. 37(2), p. 177–183.
Lingjærde, Ole Christian & Christophersen, Nils Damm (2000). Shrinkage Structure of Partial Least Squares. Scandinavian Journal of Statistics. ISSN 0303-6898. 27(3), p. 459–473.
Kugiumtzis, Dimitris; Lingjærde, Ole Christian & Christophersen, Nils Damm (1998). Regularized Local Linear Prediction of Chaotic Time Series. Physica D : Non-linear phenomena. ISSN 0167-2789. 112(3-4), p. 344–360.
Sjøberg, Dag & Christophersen, Nils Damm (1996). Den menneskefiendtlige informasjonsteknologien og andre myter, Schola.
Christophersen, Nils Damm; Neal, Colin; Hooper, Richard; Vogt, Rolf David & Andersen, Sjur (1990). Christophersen N, Neal C, Hooper RP, Vogt RD, Andersen S. Modelling streamwater chemistry as a mixture of soilwater end-members — A step towards second-generation acidification models. Journal of Hydrology. ISSN 0022-1694. 116(1), p. 307–320. doi: 10.1016/0022-1694%2890%2990130-P.
Christophersen, Nils Damm; Hauhs, Michael; Mulder, Jan; Seip, Hans Martin & Vogt, Rolf David (1990). Hydrogeochemical processes in the Birkenes catchment. In Mason, B.J. (Eds.), The surface water acidification programme. Cambridge University Press. ISSN 0-521-39533-X. p. 97–106.
Andersen, Sjur; Christophersen, Nils Damm; Mulder, Jan; Seip, Hans Martin & Vogt, Rolf David (1990). Aluminium solubility in the various soil horizons in an acidified catchment. In Mason, B.J. (Eds.), The surface water acidification programme. Cambridge University Press. ISSN 0-521-39533-X. p. 155–159.
Vogt, Rolf David; Andersen, Dag Olav; Andersen, Sjur; Christophersen, Nils Damm & Mulder, Jan (1990). Streamwater, soil-water chemistry, and water flow paths at Birkenes during a dry-wet hydrological cycle. In Mason, B.J. (Eds.), The surface water acidification programme. Cambridge University Press. ISSN 0-521-39533-X. p. 149–154.

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Leister, Wolfgang & Christophersen, Nils Damm (2014). INF5780 - Open source, open collaboration and innovation - Høst 2014.
Christophersen, Nils Damm & Leister, Wolfgang (2014). Governance of Open Source and Commons-Based Peer Production.
Leister, Wolfgang & Christophersen, Nils Damm (2013). INF5780 - Open source, open collaboration and innovation - Høst 2013.
Leister, Wolfgang & Christophersen, Nils Damm (2012). ITLED4240 - Åpen programvare, åpent samarbeid og innovasjon.
Leister, Wolfgang & Christophersen, Nils Damm (2012). INF5780 - Open source, open collaboration and innovation - Høst 2012.
Leister, Wolfgang & Christophersen, Nils Damm (2011). Åpen programvare og åpent samarbeid.
Leister, Wolfgang & Christophersen, Nils Damm (2011). INF5780 - Open source, open collaboration and innovation - Høst 2011. Show summary
Free and open source software philosophy, practices, lisences, and business models; open publishing, open science, and creative commons; open hardware; commons-based peer production and peer-to-peer, open and disruptive innovation. The students shall attain a thorough theoretical as well as practical understanding of the various models of open and innovative collaboration on the Internet including the role of legal issues.
Leister, Wolfgang; Christophersen, Nils Damm & Jayaraman, Karthik (2010). INF5780 - Open source, open collaboration and innovation - Høst 2010.
Christophersen, Nils Damm (2010). Wikipedia som dugnadsbasert allmenning.
Leister, Wolfgang; Christophersen, Nils Damm & Tsiavos, Prodromos (2009). INF5780 - Open source, open collaboration and innovation - Høst 2009.
Christophersen, Nils Damm (2009). Wikipedia and science – two knowledge commons.
Christophersen, Nils Damm (2009). Åpen kildekode, åpent samarbeid og innovasjon.
Christophersen, Nils Damm (2008). Lessons learned from the open source HISP health information program.
Christophersen, Nils Damm (2008). Fri programvare og andre dugnadsprosjekter i I- og U-land.
Christophersen, Nils Damm (2008). Open source, open collaboration, and disruptive innovation.
Christophersen, Nils Damm (2007). Wikipedia og andre nettsamfunn som inspirasjon for fremtidig formidling.
Dahl, Tobias Gulden; Lingjærde, Ole Christian; Christophersen, Nils Damm & Ekman, Torbjørn (2005). Local-ICA: independent component analysis for sources with non-stationary amplitudes.
Christophersen, Nils Damm & Trulsen, Jan (2002). Få realfag inn i ex.phil. Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116.
Christophersen, Nils Damm (2002). Digital Dignalbehandling og Bildeanalyse(DSB) ved UiO. NORSIGnalet : organ for NORSIG, Norsk forening for signalbehandling. ISSN 0804-5623. p. 3–4.
Gesbert, David & Christophersen, Nils Damm (2002). Space: the final (wireless) fontier. NORSIGnalet : organ for NORSIG, Norsk forening for signalbehandling. ISSN 0804-5623. p. 4–8.
Dahl, Tobias; Christophersen, Nils Damm & Gesbert, David (2002). Identification of parallel MIMO channels in wireless communication using power iterations.
Dahl, Tobias; Christophersen, Nils Damm & Gesbert, David (2002). BIMA Blind MIMO Algorithm.
Gesbert, David; Ekman, Torbjørn & Christophersen, Nils Damm (2002). Capacity limits of dense palm-sized MIMO arrays.
Leister, Wolfgang; Holm, Sverre & Christophersen, Nils Damm (2001). Multimedia Koding og Transmisjon - INF MKT Høst 2001.
Holm, Sverre & Christophersen, Nils Damm (2001). Hvordan virker mobiltelefonen og hva har vi i vente?
Holm, Sverre & Christophersen, Nils Damm (2001). Hvordan virker mobiltelefonen og hva har vi i vente?
Norum, Kaare Reidar; Christophersen, Nils Damm; Elverhøi, Anders; Grue, John & Uggerud, Einar (2000). Hånd i hånd med næringslivet. Dagens næringsliv. ISSN 0803-9372.
Leister, Wolfgang; Christophersen, Nils Damm; Groven, Arne-Kristian; Tsiavos, Prodromos; Heggestøyl, Simen & Rødskog, Daniel (2015). INF5780 Compendium Autumn 2015: Open Source, Open Collaboration and Innovation. Norsk Regnesentral. Show summary
This document is the compendium for the course INF5780: Open source, open collaboration and innovation at the Department of Informatics, University of Oslo, written for the autumn semester of 2015. This multi-disciplinary compendium presents aspects of commons-based peer production, free and open source software, open licenses, open standards, and how to extract value from these phenomena in open innovation and business models.
Leister, Wolfgang; Christophersen, Nils Damm; Tsiavos, Prodromos; Groven, Arne-Kristian; Heggestøyl, Simen & Rødskog, Daniel [Show all 10 contributors for this article] (2014). INF5780 Compendium Autumn 2014: Open Source, Open Collaboration and Innovation. Norsk Regnesentral. Show summary
This document is the compendium for the course INF 5780: Open source, open collaboration and innovation at the Department of Informatics, University of Oslo, written for the autumn semester of 2014. This multi-disciplinary compendium presents aspects of commons-based peer production, free and open source software, open licenses, open standards, and how to extract value from these phenomena in open innovation and business models.
Leister, Wolfgang; Christophersen, Nils Damm; Tsiavos, Prodromos; Groven, Arne-Kristian; Heggestøyl, Simen & Rødskog, Daniel [Show all 10 contributors for this article] (2013). INF5780 Compendium Autumn 2013: Open Source, Open Collaboration and Innovation. Norsk Regnesentral. Show summary
This document is the compendium for the course INF 5780: Open source, open collaboration and innovation at the Department of Informatics, University of Oslo, written for the autumn semester of 2013. This multi-disciplinary compendium presents aspects of commons-based peer production, free and open source software, open licenses, open standards, and how to extract value from these phenomena in open innovation and business models.
Leister, Wolfgang & Christophersen, Nils Damm (2012). INF5780 Compendium Autumn 2012: Open Source, Open Collaboration and Innovation. Norsk Regnesentral.
Leister, Wolfgang & Christophersen, Nils Damm (2012). ITLED 4240 Compendium Spring 2012: Open Source, Open Collaboration and Innovation. Norsk Regnesentral. Show summary
This document is the compendium for the course ITLED 4240: Open source, open collaboration and innovation at the Department of Informatics, University of Oslo, written for the spring semester of 2012. This multi-disciplinary compendium presents aspects of commons-based peer production, free and open source software, open licenses, open standards, and how to extract value from these phenomena in open innovation and business models.
Leister, Wolfgang & Christophersen, Nils Damm (2011). INF5780 Compendium Autumn 2011: Open source, Open collaboration and Innovation. Norsk Regnesentral.
Bølviken, Erik; Christophersen, Nils Damm & Storvik, Geir Olve (1998). Linear dynamical models, Kalman filtering and statistics. Lecture notes to IN-ST 259.

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Published Nov. 4, 2010 1:49 PM - Last modified Sep. 21, 2021 10:05 AM

Research groups

Biomedical Informatics (BMI)