Results 1 to 10 of about 6,370,116 (297)
Electrocardiogram Signal Denoising Using Extreme-Point Symmetric Mode Decomposition and Nonlocal Means. [PDF]
Sensors (Basel), 2016 Electrocardiogram (ECG) signals contain a great deal of essential information which can be utilized by physicians for the diagnosis of heart diseases. Unfortunately, ECG signals are inevitably corrupted by noise which will severely affect the accuracy of
Tian X +5 more
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Point-Symmetric Multivariate Density Function and Its Decomposition [PDF]
Journal of Probability and Statistics, 2014 For a T-variate density function, the present paper defines the point-symmetry, quasi-point-symmetry of order k (
Kiyotaka Iki, Sadao Tomizawa
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Hints of point-symmetric structures in SN 1987A: The jittering jets explosion mechanism [PDF]
New Astronomy, 2023 Submitted to RAA ...
N. Soker
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On the Self-Mobility of Point-Symmetric Hexapods
Symmetry, 2014 In this article, we study necessary and sufficient conditions for the self-mobility of point symmetric hexapods (PSHs). Specifically, we investigate orthogonal PSHs and equiform PSHs. For the latter ones, we can show that they can have non-translational self-motions only if they are architecturally singular or congruent.
G. Nawratil
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EXTREME-POINT SYMMETRIC MODE DECOMPOSITION METHOD FOR DATA ANALYSIS [PDF]
Advances in Adaptive Data Analysis, 2013 An extreme-point symmetric mode decomposition (ESMD) method is proposed to improve the Hilbert–Huang Transform (HHT) through the following prospects: (1) The sifting process is implemented by the aid of 1, 2, 3 or more inner interpolating curves, which classifies the methods into ESMD_I, ESMD_II, ESMD_III, and so on; (2) The last residual is defined ...
Jin-Liang Wang, Zong-Jun Li
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Simulating the Shaping of Point-symmetric Structures in the Jittering Jets Explosion Mechanism [PDF]
Publications of the Astronomical Society of the PacificAbstract We conduct three-dimensional hydrodynamical simulations of core-collapse supernovae by launching several pairs of jets into a collapsing core model and show that the jittering jets explosion mechanism (JJEM) can form a point-symmetric morphology that accounts for observed morphologies of about a dozen core-collapse supernovae ...
Jessica Braudo +3 more
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Point Symmetric 2-Structures [PDF]
Results in Mathematics, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karzel, Helmut +2 more
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Identifying a Point-Symmetric Morphology in Supernova Remnant Cassiopeia a: Explosion by Jittering Jets [PDF]
New AstronomyWe identify a point-symmetric morphology of the supernova remnant (SNR) Cassiopeia A compatible with shaping by at least two, and more likely more than four, pairs of opposite jets, as expected in the jittering jets explosion mechanism (JJEM) of core-collapse supernovae.
Ealeal Bear, Noam Soker
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PsyNet: Self-Supervised Approach to Object Localization Using Point Symmetric Transformation
Proceedings of the AAAI Conference on Artificial Intelligence, 2020 Existing co-localization techniques significantly lose performance over weakly or fully supervised methods in accuracy and inference time. In this paper, we overcome common drawbacks of co-localization techniques by utilizing self-supervised learning approach. The major technical contributions of the proposed method are two-fold.
Kyungjune Baek +2 more
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On Point-Symmetric Tournaments
Canadian Mathematical Bulletin, 1970 A tournament is a directed graph in which there is exactly one arc between any two distinct vertices. Let denote the automorphism group of T. A tournament T is said to be point-symmetric if acts transitively on the vertices of T. Let g(n) be the maximum value of taken over all tournaments of order n.
B. Alspach
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