Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Gregory L. Wojcik"'
Autor:
Gregory L. Wojcik
Publikováno v:
Solution of Superlarge Problems in Computational Mechanics ISBN: 9781461278542
Our need to understand complex wave phenomena in fields ranging from geophysics to optics encourages the use of large-scale direct and inverse numerical simulations. Due to the extended size of most models, and their fine structure, these simulations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::930f2f3c8cb2b8c12aec9669e58b3e73
https://doi.org/10.1007/978-1-4613-0535-4_16
https://doi.org/10.1007/978-1-4613-0535-4_16
Autor:
Sergey Mikhrin, Dongliang Yin, Gregory L. Wojcik, Raymond G. Beausoleil, David A. Fattal, Marco Fiorentino, Igor Krestnikov, A. R. Kovsh, Alexey Gubenko, Daniil A. Livshits
Publikováno v:
SPIE Proceedings.
High-channel-count WDM will eventually be used for short reach optical interconnects since it maximizes link bandwidth and efficiency. An impediment to adoption is the fact that each WDM wavelength currently requires its own DFB laser. The alternativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45764d92ac318f3cd5bdeb92c9549317
https://doi.org/10.1117/12.816278
https://doi.org/10.1117/12.816278
Publikováno v:
Aerosol Science and Technology. 14:177-192
The particle size response of wafer surface scanners is experimentally and theoretically studied. The basis for the theoretical predictions is the angular relative-intensity distributions obtained by three different methods: a numerical solution of M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea102881c3360f08429907847a17d334
https://doi.org/10.1080/02786829108959481
https://doi.org/10.1080/02786829108959481
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
Investigates the accuracy of existing 2D pseudospectral and k-space formulations for acoustic propagation in tissue or model scattering media. They are intended to provide insight into tissue-ultrasound interaction and a "test bed" for aberration cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b94c93eb823b8f098ba14b87c1e51d2
https://doi.org/10.1109/ultsym.1999.849292
https://doi.org/10.1109/ultsym.1999.849292
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
This talk examines an industrial, air-coupled tonpilz transducer used for acoustic ranging. The study is prompted by a situation common to long-standing industrial products: passive/active material supplies decline or disappear and replacements must
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87aecf8e8af427f5551c12c93f21f926
https://doi.org/10.1109/ultsym.1999.849179
https://doi.org/10.1109/ultsym.1999.849179
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
The Naval Research Laboratory is designing and prototyping ultra-compact, low frequency, high output sound projector panels for shallow water applications. The projectors are based on a sandwich composition of PZT-driven cymbal flextensionals between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75e4e25e68a35f6125d5d6ba948ea58d
https://doi.org/10.1109/ultsym.1999.849183
https://doi.org/10.1109/ultsym.1999.849183
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
Nonlinear propagation is recognized as an important aspect of ultrasonic medical imaging. In particular, rigorous estimates of tissue bioeffects must include it. Regulatory standards rely on measurements in water to estimate effects in lossy tissue,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9985666ca2fc53cf38c64b41f0dc1b56
https://doi.org/10.1109/ultsym.1999.849286
https://doi.org/10.1109/ultsym.1999.849286
Publikováno v:
1996 IEEE Ultrasonics Symposium. Proceedings.
We describe 2D/3D model studies of resonance and radiation characteristics of diced matching layers for ultrasound transducers. Calculations are done with PZFlex, a time-domain, finite element, electromechanical code. Continuous, thin film, quarter-w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e468e6c78352c9798e5b8e7a7315890
https://doi.org/10.1109/ultsym.1996.584365
https://doi.org/10.1109/ultsym.1996.584365
Publikováno v:
1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102).
Second harmonic imaging systems transmit relatively low frequency pulses, e.g., 2.5 MHz, and image the frequency-doubled second harmonic generated by acoustic nonlinearity. Imaging the second rather than the first harmonic eliminates significant wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9528113407cb2a78e77b877b261632ad
https://doi.org/10.1109/ultsym.1998.765247
https://doi.org/10.1109/ultsym.1998.765247
Publikováno v:
1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102).
In many ultrasonic transducer array structures, it is convenient to make electrical connection to the top and bottom electrodes of thickness driven array elements by wrapping one or both electrodes around the elevational edges of the element. This is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::691358d001437e3b5bb391f469a838a0
https://doi.org/10.1109/ultsym.1998.764969
https://doi.org/10.1109/ultsym.1998.764969