Sverre Holm

I am a professor of acoustic imaging and signal processing at the University of Oslo and an elected member of the Norwegian Academy of Technological Sciences. Jointly with the Digital Signal Processing and Image Analysis group we are part of "Centre for Innovative Ultrasound Solutions (CIUS)" - a centre for research-based innovation.
My main interest is to understand the physics of wave propagation in complex media like biological tissue. Cosmologist and astrophysicist Martin Rees says:
We can expect huge advances on three frontiers: the very small, the very large, and the very complex
More specifically I want to understand why wave propagation in complex media in medical ultrasound and elastography often results in power law frequency characteristics (attenuation and dispersion), and to uncover the physical basis for non-integer (fractional) derivative descriptions of waves - if indeed there is one.
From time to time I am on the panel of the popular national radio show NRK P2, "Tower of Abel" answering questions on acoustics in a wide sense and sometimes commenting on the history/philosophy of science. I have blogged since 2010, mainly in Norwegian, and some in English.
Apart from that I probably have too many interests. That includes history and philosophy of science, loudspeakers/audio coding, and amateur radio.
Books
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"Waves with Power-Law Attenuation," 2019, Springer and ASA Press.
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Review:
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“In my opinion it is well written and it is highly readable with technical details under control. I have highly appreciated the idea of integrating several ideas from physical acoustics with those from linear viscoelasticity." G. Saccomandi, Math Rev, Nov 2019
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YouTube channel with lectures on the Physics of Fractional (Non-integer) Derivatives.
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"The imagined conflict: On science and God", Oct. 2021, in Norwegian.
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Blog: Den innbilte konflikten. Try the translation menu in the upper right-hand corner. It works surprisingly well!
Research
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Invited presentations at Acoust. Soc. America Conf, SIAM Am. Inst. Ultrasound in Med etc in recent years
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Member of editorial board of Fractional Calculus and Applied Analysis and Progress in Fractional Differentiation and Applications
- Member of Scientific Committee of the Indoor Positioning and Indoor Navigation Conference 2012-2017. In 2012 and 2013 I also lead industry panel debates at the IPIN conferences
Presentations for download
- Lecture notes: "Acoustic wave equations and four ways media may perturbe the speed of sound," 2022.
- Differential arrays (IN5450) - from cardioid microphones to Yagi antennas (2020)
- Abel’s 1823 Paper on Fractional Derivatives, 27 Feb 2020
- Second harmonic imaging in active sonar (2016)
- Fractional derivatives (2016)
- Fascinating wave phenomena: Where Newton and Hooke fall short (2016)
- Processing the data twice: Minimum variance as an alternative to geometry-based beamforming (2016)
- Long delayed radio echoes – the illusive secret of the ionosphere (2021) first heard in Oslo in 1927.
- Youtube presentation at HamSci 2021.
- See also these pages which Wikipedia refers to:
- The Art of Writing a Scientific Paper (2015).
- See also blog with same title.
- Experience with sparse arrays (2007)
- Limited diffraction beams and a new decomposition of arbitrary annular beams (2002)
Demos and Software
The best demonstration of a fractional derivative physical device is capacitor soakage or dielectric absorption: YouTube video.
- Some videos showing the fractional derivative of functions developed by former PhD student Vikash Pandey.
- Interactive program, Ultrasim, a Matlab toolbox for ultrasound field simulation.
- Magnitude squared coherence analysis software (Climate data).
The publication list from the database Cristin is not always so useful as it seems to be unable to distinguish between publications from several persons with the same name as me. Therefore it may be better to use my own list, Google Scholar, or ORCID.
Publications
Most cited papers
- J.-F. Synnevåg, A. Austeng, and S. Holm, "Adaptive beamforming applied to medical ultrasound imaging," IEEE Trans. Ultrason., Ferroelect., Freq. Contr. (Special issue on high resolution ultrasonic imaging), vol. 54(8), Aug. 2007, pp. 1606-1613.
- W. Chen and S. Holm, "Fractional Laplacian time-space models for linear and nonlinear lossy media exhibiting arbitrary frequency dependency," J. Acoust. Soc. Amer., pp. 1424-1430, Apr. 2004.
- J.-F. Synnevåg, A. Austeng, and S. Holm, ”Benefits of Minimum-Variance Beamforming in Medical Ultrasound Imaging”, IEEE Trans. Ultrason., Ferroelect., Freq. Contr., Sept. 2009.
- A. Austeng and S. Holm, "Sparse 2D Arrays for 3D Phased Array Imaging - Design Methods," IEEE Trans. Ultrasonics, Ferroelectrics and Frequency Control, Aug. 2002, pp. 1073-1086.
- W. Chen and S. Holm, "Modified Szabo’s wave equation models for lossy media obeying frequency power law," J. Acoust. Soc. Amer., pp. 2570-2574, Nov. 2003.
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Chandrasekaran, Sri Nivas; Näsholm, Sven Peter & Holm, Sverre (2022). Wave equations for porous media described by the Biot model. Journal of the Acoustical Society of America. ISSN 0001-4966. 151(4), p. 2576–2586. doi: 10.1121/10.0010164. Full text in Research Archive
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Svensson, Siri Fløgstad; Fuster i Garcia, Elies; Latysheva, Anna; Fraser-Green, Jorunn; Nordhøy, Wibeke & Darwish, Omar Isam [Show all 11 contributors for this article] (2021). Decreased tissue stiffness in glioblastoma by MR elastography is associated with increased cerebral blood flow. European Journal of Radiology. ISSN 0720-048X. 147. doi: 10.1016/j.ejrad.2021.110136. Full text in Research Archive
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Aparicio, Joaquin & Holm, Sverre (2021). Obtaining range measurements from ambient noise cross-correlations for the self-calibration of nodes. CEUR Workshop Proceedings. ISSN 1613-0073. 3097. Full text in Research Archive
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Lino, Paolo; Maione, Guido; Garrappa, Roberto & Holm, Sverre (2021). An approach to optimal integer and fractional-order modeling of electro-injectors in compression-ignition engines. Control Engineering Practice. ISSN 0967-0661. 115(104890). doi: 10.1016/j.conengprac.2021.104890.
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Svensson, Siri Fløgstad; De Arcos, José; Darwish, Omar Isam; Fraser-Green, Jorunn; Storås, Tryggve & Holm, Sverre [Show all 9 contributors for this article] (2021). Robustness of MR Elastography in the Healthy Brain: Repeatability, Reliability, and Effect of Different Reconstruction Methods. Journal of Magnetic Resonance Imaging. ISSN 1053-1807. 53(5), p. 1510–1521. doi: 10.1002/jmri.27475. Full text in Research Archive
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Holm, Sverre; Holm, Thomas & Martinsen, Ørjan Grøttem (2021). Simple circuit equivalents for the constant phase element. PLOS ONE. ISSN 1932-6203. 16(3). doi: 10.1371/journal.pone.0248786. Full text in Research Archive
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Fang, Jun; Näsholm, Sven Peter; Chen, Wen & Holm, Sverre (2020). The fractional constitutive models for nonlocal material based on scattering wave equations. Mechanics of Time-Dependent Materials. ISSN 1385-2000. doi: 10.1007/s11043-020-09482-w.
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Holm, Sverre (2020). Time domain characterization of the Cole-Cole dielectric model. Journal of Electrical Bioimpedance. ISSN 1891-5469. 11(1), p. 101–105. doi: 10.2478/JOEB-2020-0015. Full text in Research Archive Show summary
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Yang, Xu; Cai, Wei; Liang, Yingjie & Holm, Sverre (2020). A novel representation of time-varying viscosity with power-law and comparative study. International Journal of Non-Linear Mechanics. ISSN 0020-7462. 119, p. 1–10. doi: 10.1016/j.ijnonlinmec.2019.103372.
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Esmonde, Harry & Holm, Sverre (2020). Fractional derivative modelling of adhesive cure. Applied Mathematical Modelling. ISSN 0307-904X. 77(2), p. 1041–1053. doi: 10.1016/j.apm.2019.08.021.
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Holm, Sverre (2019). Dispersion analysis for wave equations with fractional Laplacian loss operators. Fractional Calculus and Applied Analysis. ISSN 1311-0454. 22(6), p. 1596–1606. doi: 10.1515/fca-2019-0082.
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Parker, Kevin; Szabo, Thomas & Holm, Sverre (2019). Towards a consensus on rheological models for elastography in soft tissues. Physics in Medicine and Biology. ISSN 0031-9155. 64(21). doi: 10.1088/1361-6560/ab453d. Show summary
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Chandrasekaran, Sri Nivas & Holm, Sverre (2019). A multiple relaxation interpretation of the extended Biot model. Journal of the Acoustical Society of America. ISSN 0001-4966. 146(1), p. 330–339. doi: 10.1121/1.5116139.
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Kvam, Johannes; Holm, Sverre & Angelsen, Bjørn Atle Johan (2019). Exploiting Ballou's rule for better tissue classification. Journal of the Acoustical Society of America. ISSN 0001-4966. 145(4), p. 2103–2112. doi: 10.1121/1.5096533.
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Patz, Samuel; Fovargue, Daniel; Schregel, Katharina; Nazari, Navid; Palotai, Miklos & Barbone, Paul E. [Show all 12 contributors for this article] (2019). Imaging localized neuronal activity at fast time scales through biomechanics. Science Advances. ISSN 2375-2548. 5(4). doi: 10.1126/sciadv.aav3816.
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Holm, Sverre (2021). Den innbilte konflikten. Om naturvitenskap og Gud. Veritas forlag. ISBN 978-82-8385-036-9. 359 p.
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Holm, Sverre (2019). Waves with Power-Law Attenuation. Springer Nature. ISBN 978-3-030-14927-7. 312 p. Show summary
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Holm, Sverre (2022). Gud og vitenskap – Kan jeg tro på begge deler?
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Holm, Sverre (2022). En innbilt konflikt mellom naturvitenskap og gudstro?
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Holm, Sverre (2022). Gode grunner til at konflikten mellom vitenskap og Gud er innbilt.
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Aparicio, Joaquin; Thio, Vincent Martello Kwie Hoe & Holm, Sverre (2022). Range evaluation between indoor microphones obtained from acoustic ambient noise cross-correlations.
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Holm, Sverre (2021). Naturvitenskap og Gud er ikke konkurrenter. Dagen : kristelig dagblad. ISSN 0805-4738.
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Holm, Sverre (2021). – Trist at folk tror det er en konflikt mellom tro og vitenskap. [Newspaper]. Vårt Land. Show summary
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Kvellestad, Anders; Normann, Ben David & Holm, Sverre (2021). Om Gud, fysikk og de dype spørsmålene. Avisa Vårt land. Show summary
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Holm, Sverre (2021). The Roots of Mathematics and Natural Laws: Materialism vs Theism.
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Holm, Sverre (2021). Hensikt eller tilfeldighet?
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Holm, Sverre (2021). Gode grunner til at naturvitenskap og Gud ikke er i konflikt.
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Holm, Sverre (2021). Fractionality in time-varying systems.
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Holm, Sverre (2021). Fractional wave equations appear naturally in complex media.
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Aparicio, Joaquin & Holm, Sverre (2021). Evaluation of acoustic ambient noise cross-correlations in indoor environments.
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Holm, Sverre (2021). Non-integer derivatives in selected areas of physics.
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Holm, Sverre (2021). Non-integer derivatives in acoustics and other areas of physics.
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Holm, Sverre (2021). Lysloven på Kanariøyene.
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Holm, Sverre (2021). Long delayed radio echoes – the illusive secret of the ionosphere. Show summary
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Holm, Sverre (2020). Justification for power laws and fractional models.
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Holm, Sverre (2020). Power-laws and fractional calculus.
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Holm, Sverre (2020). Waves with Power-Law Attenuation.
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Holm, Sverre (2020). Abel’s 1823 Paper on Fractional Derivatives and Waves with Power-Law Attenuation. Show summary
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Chandrasekaran, Sri Nivas & Holm, Sverre (2019). Erratum: A multiple relaxation interpretation of the extended Biot model (Journal of the Acoustical Society of America (2019) 146 (330-339) DOI: 10.1121/1.5116139). Journal of the Acoustical Society of America. ISSN 0001-4966. 146(6), p. 4322–4323. doi: 10.1121/1.5139414.
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Aparicio, Joaquin; Alvarez, Fernando; Hernandez, Alvaro & Holm, Sverre (2019). A review of techniques for ultrasonic indoor localization systems.
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Holm, Sverre (2019). Troende naturforskere gjennom 400 år ved seks av dem.
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Holm, Sverre (2019). Troende naturforskere gjennom 400 år ved seks av dem.
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Holm, Sverre (2019). Er naturvitenskap Teorien om Alt?
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Holm, Sverre (2019). Troende naturforskere gjennom 400 år ved åtte av dem.
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Holm, Sverre (2019). Evolusjon og klassisk kristen tro. Teistisk evolusjon ‐ Evolusjonær kreasjonisme.