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Self acceleration from spectral geometry in dissipative quantum-walk dynamics [PDF]
Nature CommunicationsThe dynamic behavior of a physical system often originates from its spectral properties. In open systems, where the effective non-Hermitian description enables a wealth of spectral structures in the complex plane, the concomitant dynamics are ...
Peng Xue +5 more
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Spatial Correlation of Spectral Acceleration in European Data
Bulletin of the Seismological Society of America, 2012 Abstract Quantification of regional seismic risk is based on spatially correlated random fields and requires modeling of the joint distribution of ground‐motion intensity measures at all sites of interest. In particular, when a portfolio of buildings or a transportation/distribution network (lifeline) is of concern, correlation models for elastic ...
Simona Esposito, Iunio Iervolino
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Laser-driven ion accelerators: Spectral control, monoenergetic ions and new acceleration mechanisms [PDF]
Laser and Particle Beams, 2007 Los Alamos National Laboratory short pulse experiments have shown using various target cleaning techniques such that heavy ion beams of different charge states can be produced. Furthermore, by controlling the thickness of light ions on the rear of the target, monoenergetic ion pulses can be generated. The spectral shape of the accelerated particles can
Kirk Flippo +9 more
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Electron acceleration in solar flares: theory of spectral evolution [PDF]
Astronomy & Astrophysics, 2006 Context: Stochastic acceleration is thought to be a key mechanism in the energization of solar flare electrons. Aims: We study whether stochastic acceleration can reproduce the observed soft-hard-soft evolution of the spectral features of the hard X-ray emitted by suprathermal electron.
P. C. Grigis, A. O. Benz
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Accelerating ptychographic reconstructions using spectral initializations [PDF]
Optics Letters, 2021 Ptychography is a promising phase retrieval technique for label-free quantitative phase imaging. Recent advances in phase retrieval algorithms witnessed the development of spectral methods to accelerate gradient descent algorithms. Using spectral initializations on experimental data, for the first time, we report three times faster ptychographic ...
Valzania, Lorenzo +2 more
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Shipin yu jixie, 2023 Objective: Optimized cushioning packaging. Methods: Taking Hami melon and its packaging as the research object, conducted sweep frequency vibration test on 5-layer stacked packaging, measured the natural frequency, maximum power Spectral density and peak
ZHANG Lianwen +5 more
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Geodesy and Geodynamics, 2022 It is well known that seismic hazard assessment should be implemented to design infrastructures in an earthquake-prone area such as Bengkulu. This paper presents local seismic hazard maps based on the response spectra of stiff and very dense soils in ...
Lindung Zalbuin Mase
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Strong Ground Motion Sensor Network for Civil Protection Rapid Decision Support Systems
Sensors, 2021 Strong motion sensor networks deployed in metropolitan areas are able to provide valuable information for civil protection Decision Support Systems (DSSs) aiming to mitigate seismic risk and earthquake social-economic impact.
Georgios Chatzopoulos +4 more
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Accelerated spectral approximation [PDF]
Mathematics of Computation, 1998 A systematic development of higher order spectral analysis, introduced by Dellwo and Friedman, is undertaken in the framework of an appropriate product space. Accelerated analogues of Osborn’s results about spectral approximation are presented. Numerical examples are given by considering an integral operator.
ALAM, R, KULKARNI, RP, LIMAYE, BV
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GeoHazards, 2021 Site amplification factors in National Building Codes are typically specified as a function of the average shear wave velocity over the first 30 m (Vs30) or site class (A, B, C, D and E) for defined ranges of Vs30 and/or ranges of depth to bedrock ...
Mohammad Kamruzzaman Talukder +2 more
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