23d Scandinavian Symposium on Physical Acoustics

Ustaoset Høyfjellshotell 30 January - 2 February 2000

Monday 31 January Morning session

8.30	O.M. Johannesen$^{1}$, H. Hobæk$^{2}$, and H. Sagen$^{1}$
	$^{1}$ Nansen Environmental and remote Sensing Centre, Bergen
	$^{2}$ Department of Physics, University of Bergen
	Acoustic monitoring of the ocean climate in the Arctic Ocean -
	CENTRAL ARCTIC.
8.55	A. Hashemi, Department of Engineering, Bergen College
	Prediction of acoustic arrival time in Fram Strait
	by Fourier analysis of broadband acoustic signals based on normal modes.
9.20	B. Berntsen, Dept. of Telecommunications/acoustics NTNU
	Estimation of seafloor impedance and roughness using a parametric sonar.
9.45	Coffee break
10.00	I. Karasalo, and J. Mattson, FOA, Stockholm
	Model analysis of a sea trial for detection of submerged
	and buried objects.
10.25	R.E. Hansen, TRIAD AS
	Measurements in the Mixed Layer with a Bistatic Multi-CW Doppler Sonar.
10.50	R. Korneliussen, Institute of Marine Research, Bergen
	Acoustic signatures of biological scatterers.
11.15	A. Sødahl, PGS, Oslo
	Environmental aspects of marine seismic airguns.
11.40	P. Lunde, K.-E. Frøysa ( Christian Michelsen Research AS),
	and M. Vestrheim (Department of Physics, University of Bergen)
	Challenges for improved accuracy and traceability in ultrasonic
	fiscal flow metering of gas.
12.05	Break, Lunch will be served from 13.30

Monday 31 January Afternoon session

16.00	S.B. Khelil$^{1}$, A. Merlen$^{1}$, V. Preobrazhenski$^{2,3}$, P. Pernod$^{2}$
	$^{1}$ Laboratoire de Mechanique de Lille Ura cnrs 1441 France
	$^{2}$ Institut d'Electronique et Microelectronique du Nord, Umr cnrs 8520 France
	$^{3}$ Wave research Center of general Physics institute, Russian Acad. Sci.
	Acoustic phase conjugation in active media: a new numerical approach.
16.25	S. Ivansson$^{1}$, and J. Bishop$^{2}$
	$^{1}$ FOA, Stockholm
	$^{2}$ Naval Undersea warfare Center, Newport
	Extraction of traveling-wave field components by Green's function expansion.
16.50	J.O. Langseth, Norwegian Defence Research Establishment, Kjeller
	Unsplit shock capturing schemes applied to acoustics.
17.15	Coffee break
17.30	A. Hashemi, Department of Engineering, Bergen College
	Inverse modelling using empirical orthogonal functions.
17.55	P. Svensson, Dept. of Telecommunications/acoustics NTNU
	Modelling scattering impulse responses with analytic edge sources.
18.20	A. Rønnekleiv, Department of Physical Electronics, NTNU
	More on guiding of preudo SAW.
18.45	Break, Dinner at 19.15

Tuesday 1 February Morning session

8.30	M. Vestrheim, Department of Physics, University of Bergen
	Material constants for piezoceramic materials.
8.55	T. Bove, W. Wolny, E. Ringaard, and A. Pedersen, Ferroperm Piezoceramics AS
	New piezoceramic material for medical diagnostic applications.
9.20	J. Kochbach, Department of Physics, University of Bergen
	Finite element modelling of piezoceramic discs
	including radiation into a fluid medium.
9.45	Coffee break
10.00	Å.Ødegård, Department of Informatics, University of Oslo
	Finite elemente simulation of acoustic fields with DIFF-Pack
10.25	P. Fox, Department of Informatics, University of Oslo
	Modelling 2D arrays with Fourier-Bessel series.
10.50	L. Hoff, Dept. of Telecommunications/acoustics NTNU
	Nonlinear scatter from Sonazoid: Theory and some measurements.
11.15	A. Healey, Nycomed Imaging AS
	Ultrasound pulse propagation, visualisation and simulation.
11.40	E.B. Lunde, Signal Processing Group, Technology Division, Simrad AS
	Sound transmission. The element array and the wavefront surface.
	A generalised approach.
12.05	Lunch will be served from 13.30

Tuesday 1 February Afternoon session

16.00	R.C. Waag (invited), Department of EECS,University of Rochester NY
	Measurement and correction of ultrasonic wavefront distortion.
16.30	B. A.J. Angelsen, Department of Physiology and Biomedical Engineering NTNU
	Modelling and analysis of wave propagation in heterogeneous, soft tissue
16.55	T. F. Johansen, Department of Physiology and Biomedical Engineering NTNU
	Phase aberration correction - experiments and simulations.
17.20	Coffee break
17.35	G. Taraldsen, Department of Physiology and Biomedical Engineering NTNU
	Mathematical modelling of nonlinear medical ultrasound.
18.00	S. Holm, Department of Informatics, University of Oslo
	Non-linear propagation of limited diffraction beams.
18.25	A. Austeng,Department of Informatics, University of Oslo
	Thinned arrays for real-time 3D ultrasound imaging
18.50	Break, Dinner at 19.15

Wednesday 2 February Morning session

9.00	G. Pedersen and H. Hobæk, Department of Physics, University of Bergen
	Acoustic streaming from single ultrasound bursts - preliminary experimental results.
9.25	I. Bratberg, Dept. of Telecommunications/acoustics NTNU
	Event driven methods in dry non-cohesive granular materials.
9.50	H. Engan, Department of Physical Electronics, NTNU
	Wireless temperature sensing by surface acoustic waves.
10.15	Coffee break
10.30	I. Bjørnø, J. Hald, and L. Bjørnø, Industrial Acoustics Department
	Technical University of Denmark
	Development of an ultrasonic procedure for on-line monitoring of quality of potatoes.
10.55	J. Pihl, FOA Stockholm
	Determination of geo-acoustic parameters by inverse modelling.
11.20	H.Dong, Dept. of Telecommunications/acoustics NTNU
	Sound propagation over layered poro-elastic ground by finite difference method.
11.45	Closing, Lunch is served from 12.30