Results 11 to 20 of about 1,048,203 (301)
HORIZONS AND PLANE WAVES: A REVIEW [PDF]
Modern Physics Letters A, 2003 We review the attempts to construct black hole/string solutions in asymptotically plane wave spacetimes. First, we demonstrate that geometries admitting a covariantly constant null Killing vector cannot admit event horizons, which implies that pp-waves cannot describe black holes.
Hubeny, Veronika E., Rangamani, Mukund
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地球与行星物理论评, 2021 Since Aki (1957) proposed the spatial autocorrelation (SPAC) technology based on the microtremor, the SPAC technique has been independently developed and widely used to infer the S wave velocity at the shallow structure in the field of civil engineering.
Laiyu Lu
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Plane Wave Reverse Time Image for Nondestructive Tests
IEEE Access, 2023 Reverse time migration (RTM) has been a popular method in industry duo to its ability of imaging complex subsurface and no dip restriction. However, RTM based on full matric capture (FMC) data is limited by the time cost of the calculation and cannot be ...
Wanqiu Zheng, Xiaohong Meng, Jian Wang
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Plane waves: to infinity and beyond! [PDF]
Classical and Quantum Gravity, 2002 We describe the asymptotic boundary of the general homogeneous plane wave spacetime, using a construction of the `points at infinity' from the causal structure of the spacetime as introduced by Geroch, Kronheimer and Penrose. We show that this construction agrees with the conformal boundary obtained by Berenstein and Nastase for the maximally ...
Marolf, D., Ross, S. F.
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Wave Motion Analysis in Plane via Hermitian Cubic Spline Wavelet Finite Element Method
Shock and Vibration, 2020 A plane Hermitian wavelet finite element method is presented in this paper. Wave motion can be used to analyze plane structures with small defects such as cracks and obtain results.
Xiaofeng Xue +3 more
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Investigation of the plane wave coupling to a linearly loaded transmission line network
Известия высших учебных заведений: Проблемы энергетики, 2020 The article is concerned with a complex investigation of the influence of the plane wave coupling with a certain function of time, incident direction and polarization to a linearly loaded transmission line network comprised of three single-wire ...
L. M. Galeev
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Plane-wave lightcone superstring field theory [PDF]
, 2004 We construct the cubic interaction vertex and dynamically generated supercharges in lightcone superstring field theory for a large class half-supersymmetric D-branes in the planewave background.
Berenstein D +15 more
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On the plane-wave cubic vertex [PDF]
Physical Review D, 2004 26 pages, 1 figure; harvmac (b); v4: minor corrections in appendix ...
Lucietti, J, Schafer-Nameki, S, Sinha, A
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Generation and Analysis of Ultrasound Images Using Plane Wave and Sparse Arrays Techniques
Sensors, 2018 Ultrasonic imaging is one of the most important techniques to help medical diagnosis. However, obtaining high quality images requires the acquisition, processing, and storage of a large amount of data.
Nivaldo T. Schiefler +5 more
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Sensors, 2022 The multi-angle Doppler method was introduced for the estimation of velocity vectors by measuring axial velocities from multiple directions. We have recently reported that the autocorrelation-based velocity vector estimation could be ameliorated ...
Hideyuki Hasegawa +3 more
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