Results 201 to 210 of about 648,275 (262)

Deformable image registration accuracy: impact of user-defined parameter selection on contour propagation for deep inspiration breath-hold and free breathing breast radiotherapy. [PDF]

BMC Med Imaging
Knippen S, Pargmann L, Weimann S, Hildebrandt G, Borm KJ, Duma MN.   +5 more
europepmc   +1 more source

Viscoelastic Properties of Porcine Pericardium Under Biaxial Tensile Creep and Stress Relaxation: Application for Novel Aortic Valve Bioprosthesis Design. [PDF]

Bioengineering (Basel)
Matjeka E, Kuchumov AG, Ngwangwa HM, Pandelani T, Nemavhola F.   +4 more
europepmc   +1 more source

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A generalized approach to direction finding

IEEE Transactions on Acoustics, Speech, and Signal Processing, 1986
With reference to the recently developed estimation of signal parameters using a rotational invariance techniques (ESPRIT) it is pointed out that other operators can be used to generate the matrix pencil. By way of example, the moving window operator is discussed. >
Hamza Ouibrahim, Donald D. Weiner, Tapan K. Sarkar   +2 more
openaire   +1 more source

Direction finding with a rotating antenna

2012 20th Signal Processing and Communications Applications Conference (SIU), 2012
Finding the direction of the emitters is a problem to be solved in many areas. One of the methods used for that purpose is that using a rotating directional antenna and obtaining the direction estimate by processing the measured signal amplitudes. Direction estimation, in principle, is based on the own antenna pattern modulation on the measured signal.
Berkin Yildirim, Aydin Bayri, Gokhan Gok
openaire   +1 more source

Finding a long directed cycle

ACM Transactions on Algorithms, 2008
Consider a digraph with n vertices. For any fixed value k , we present linear- and almost-linear-time algorithms to find a cycle of length ≥ k , if one exists. We also find a cycle that has length ≥ log n /log log n in ...
Harold N. Gabow, Shuxin Nie
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A parametric direction finding technique

ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
The fundamental signal model for narrowband direction finding - the propagation of several sinusoidal planar wavefronts in a medium containing an array of sensors with additive Gaussian noise present - is assumed implicitly in most high resolution beamforming algorithms.
Darel A. Linebarger, Don H. Johnson
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A robust estimator for direction finding

[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991
Among high-resolution direction-of-arrival (DOA) estimators, it is known that the maximum likelihood estimation (MLE) has the most desirable performance in resolution. However, when the SNR falls below a certain threshold, its performance degrades considerably.
Qiang Wu 0006, Kon Max Wong
openaire   +1 more source