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Spectral Analysis of Ground Acceleration-Based Testing
Transportation Research Record: Journal of the Transportation Research Board, 2009Spectral analysis of downhole acceleration data is used to identify changes in elastic properties of track substructure. The spectral analysis is based on the power spectral density (PSD) as an indicator of frequency content. This method was developed and tested at the Transportation Technology Center, Inc., in Pueblo, Colorado. The system provides an
Ho, Carlton L +2 more
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Accelerating spectral clustering with partial supervision
Data Mining and Knowledge Discovery, 2010Spectral Clustering is a popular learning paradigm that employs the eigenvectors and eigenvalues of an appropriate input matrix for approximating the clustering objective. Albeit its empirical success in diverse application areas, spectral clustering has been criticized for its inefficiency when dealing with large-size datasets.
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Accelerating spectral unmixing by using clustered images
2017 IEEE International Conference on Image Processing (ICIP), 2017We propose the usage of a clustering step before the unmixing of hyperspectral images. This circumvents or at least mitigates the drawback of having a large amount of data that has to be processed by taking advantage of the large number of similar pixels and merging similar pixels into clusters. Afterwards, only the cluster centroids have to be unmixed
Bauer, Sebastian +2 more
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Near-source magnitude scaling of spectral accelerations
2022Ground-motion models (GMMs) are often used to predict the random distribution of Spectral accelerations (SAs) at a site due to a nearby earthquake. In probabilistic seismic hazard and risk assessment, large earthquakes occurring close to a site are considered as critical scenarios.
Kotha, Sreeram Reddy (Dr.) +3 more
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Spectral features of laser-accelerated protons for radiotherapy applications
Physics in Medicine and Biology, 2008Laser-induced particle accelerators have been recognized as a potential proton source for radiotherapeutic applications in recent years. However, there are still major difficulties--especially regarding the resulting proton spectra--to overcome for a successful application in the clinic.
J, Weichsel +4 more
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Acceleration of spectral domain analysis method for conformal antennas
2010 International Workshop on Antenna Technology (iWAT), 2010This paper presents different approaches for acceleration of the spectral domain analysis of large conformal antennas and arrays. The basic idea is to find suitable simplification of the original problem that can be efficiently analyzed using alternative method like Uniform Theory of Diffraction (UTD).
Bosiljevac, Marko +2 more
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Estimation of spectral acceleration based on neural networks
Proceedings of the Institution of Civil Engineers - Structures and Buildings, 2014This study presents an effective method based on artificial intelligence to predict spectral acceleration from the data of the ‘Next generation attenuation' project. The proposed method uses the learning abilities of artificial neural networks to expand the knowledge of the mapping from earthquake parameters to spectral accelerations, which results in
Hossein Bakhshi +3 more
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An Accelerated Spectral Synthesis Technique
Nuclear Science and Engineering, 1974William G. Price, James J. Duderstadt
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Power spectral analysis of finger acceleration tremor
Journal of Applied Physiology, 1964J E, RANDALL, R N, STILES
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A neural network to predict spectral acceleration
2021Ali R. Kashani +3 more
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