Results 1 to 10 of about 5,706,267 (307)
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
doaj +3 more sources
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 ...
Wang, Jin-Liang, Li, Zong-Jun
semanticscholar +5 more sources
Point Symmetric 2-Structures [PDF]
Results in Mathematics, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karzel, Helmut +2 more
semanticscholar +5 more sources
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 cardiovascular disease diagnosis. Existing ECG signal denoising methods based on wavelet shrinkage,
Tian X +5 more
europepmc +6 more sources
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
openaire +3 more sources
On Iterated Image Size for Point-Symmetric Relations [PDF]
Combinatorics, Probability and Computing, 2008 Let Γ =(V,E) be a point-symmetric reflexive relation and let υ ∈ V such that |Γ(υ)| is finite (and hence |Γ(x)| is finite for all x, by the transitive action of the group of automorphisms). Let j ∈ℕ be an integer such that Γj(υ)∩ Γ−(υ)={υ}. Our main result states that As an application we have |Γj(υ)| ≥ 1+(|Γ(υ)|−1)j.
Y. O. Hamidoune
openaire +4 more sources
MORPHO-KINEMATIC ANALYSIS OF THE POINT-SYMMETRIC, BIPOLAR PLANETARY NEBULAE Hb 5 AND K 3-17, A PATHWAY TO POLY-POLARITY [PDF]
, 2012 The kinematics of the bipolar planetary nebulae Hb 5 and K 3-17 are investigated in detail by means of a comprehensive set of spatially resolved high spectral resolution, long-slit spectra.
J. López +4 more
semanticscholar +3 more sources
Precessing Jets and Point-Symmetric Nebulae [PDF]
The Astrophysical Journal, 1995 We present a model for the formation of point-symmetric nebulae that relies on the existence of a precessing jet interacting with the interstellar medium (ISM). Using three-dimensional numerical simulations, we investigate the basic gasdynamics inherent to the model.
J. A. Cliffe +3 more
openaire +2 more sources
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
openaire +2 more sources
The physical structure of the point-symmetric and quadrupolar planetary nebula NGC 6309 [PDF]
, 2008 Aims. We analyse the point-symmetric planetary nebula NGC 6309 in terms of its three-dimensional structure and of internal variations of the physical conditions to deduce the physical processes involved in its formation. Methods.
R. V'azquez +6 more
semanticscholar +3 more sources