Results 11 to 20 of about 13,124,790 (289)
Modern spectral analysis in HF radar remote sensing. [PDF]
, 1998 High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A., Vizinho, A
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Synthesis of 3-phenyl-4-styryl and 3-phenyl-4-hydroxy coumarins [PDF]
مجلة التربية والعلم, 2008 In this paper the synthesis of substituted 3-phenyl-4-styryl and 3-phenyl-4-hydroxy coumarins is reported. The substituted benzaldehydes were treated with 2-hydroxy acetophenone to give the corresponding chalcone, the hydroxy chalcone then reacted with ...
Shaima Ismaeel
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Theory and assessment of an improved power spectral density estimator [PDF]
, 1990 This thesis is concerned with the processing of time domain signals received by a single sensor. An example of such signals is the radar return, which is used in one way or another to estimate the power spectral density a frequency representation of ...
Ali, Ali Abbas
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Mathematics, 2022 In this paper, we study numerically the effect of rotation within a sample of water in a cylindrical container subject to rotation which is heated with a constant temperature at the bottom and lateral wall. We analyze the temporal behavior of temperature
María Cruz Navarro +2 more
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Directed network Laplacians and random graph models
Royal Society Open Science, 2021 We consider spectral methods that uncover hidden structures in directed networks. We establish and exploit connections between node reordering via (a) minimizing an objective function and (b) maximizing the likelihood of a random graph model. We focus on
Xue Gong +2 more
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A Sparse Spectral Method on Triangles [PDF]
SIAM Journal on Scientific Computing, 2019 In this paper, we demonstrate that many of the computational tools for univariate orthogonal polynomials have analogues for a family of bivariate orthogonal polynomials on the triangle, including Clenshaw's algorithm and sparse differentiation operators.
Sheehan Olver +2 more
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A survey of kernel and spectral methods for clustering [PDF]
, 2007 Clustering algorithms are a useful tool to explore data structures and have been employed in many disciplines. The focus of this paper is the partitioning clustering problem with a special interest in two recent approaches: kernel and spectral methods ...
Masulli, F. +11 more
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Knowledge Transfer Between Artificial Intelligence Systems
Frontiers in Neurorobotics, 2018 We consider the fundamental question: how a legacy “student” Artificial Intelligent (AI) system could learn from a legacy “teacher” AI system or a human expert without re-training and, most importantly, without requiring significant computational ...
Ivan Y. Tyukin +6 more
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A Chebyshev-Gauss collocation method for the numerical solution of ordinary differential equations [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2017 This paper presents a Chebyshev-Gauss collocation method to determine an approximate solution to the initial value problems of ordinary differential equations.
Kanyakorn Cheuprasert, Nairat Kanyamee
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On the Compressive Spectral Method
Multiscale Modeling & Simulation, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alan Mackey +2 more
openaire +4 more sources