Results 281 to 290 of about 323,577 (311)

Inversion in Heterogeneous Media

2001
In Chapter 3, we created our first inversion formulas for the three-dimensional inverse-scattering imaging problem. We formulated the problem for the special case of data collected with a zero-offset recording geometry, and assumed a constant-background wavespeed.
N. Bleistein, J. W. Stockwell, J. K. Cohen   +2 more
openaire   +1 more source

Ultrasonic Wave Propagation in Heterogeneous Media

AIP Conference Proceedings, 2010
Piezoelectric ultrasonic transducers typically employ composite structures to improve their transmission and reception sensitivities. The geometry of the composite is regular with one dominant length scale and, since these are resonant devices, this dictates the central operating frequency of the device. In order to construct a wide bandwidth device it
Anthony J. Mulholland, Theodore E. Simos, George Psihoyios, Ch. Tsitouras   +3 more
openaire   +3 more sources

Heterogeneous media events processing systems

Proceedings of the 2004 ACM SIGMM workshop on Effective telepresence, 2004
A key challenge to the successful application of the data modeling, storage and retrieval is the processing of relevant media to determine the events that are represented by them. Towards this goal, we are developing a heterogeneous media events processing system that combines human expertise with algorithmic processing capabilities.
Pilho Kim, Ramesh C. Jain
openaire   +1 more source

Ultrasound Emitter Localization in Heterogeneous Media

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
A novel algorithm to accurately determine the location of an ultrasound source within heterogeneous media is presented. The method obtains a small spacial error of 748 microm+/-310 microm for 100 different measurements inside a circular area with 140 mm diameter. The new algorithm can be used in targeted drug delivery for cancer therapies as well as to
Michael, Flückiger, Bradley J, Nelson
openaire   +2 more sources

Heterogeneous recording media

SPIE Proceedings, 1991
The paper summarizes the results of investigations performed to obtain deep 3-D holograms with 102 i0 mkm physical thickness allowing the postexposure amplification and the a posteriori changing of the grating parameters. This aim has been achieved by developing heterogeneous systems on the basis of porous glass with light-sensitive compositions ...
openaire   +1 more source

Home Media Access with Heterogeneous Devices

International Journal of Virtual Communities and Social Networking, 2015
The intensive use of social content anywhere and from any device presents new challenges for current systems and networks particularly when they are used by novice users. One of the most places where social channels are used by non-expert users and with a wide range of devices is at home.
openaire   +1 more source

Heterogeneous Media

2021
openaire   +1 more source

Exclusion of oscillations in heterogeneous and bi-composite media thermal conduction

International Journal of Heat and Mass Transfer, 2006
Peter Vadasz
exaly  

Comparison of Galerkin-type discretization techniques for two-phase flow in heterogeneous porous media

Advances in Water Resources, 1998
Rainer Helmig
exaly  

Heterogeneous Media

2015
openaire   +1 more source