Results 51 to 60 of about 6,708 (120)
Consistency relations for non-Gaussianity
Journal of Cosmology and Astroparticle Physics, 2008 We investigate consistency relations for non-Gaussianity. We provide a model-independent dynamical proof for the consistency relation of 3-point correlation functions from the Hamiltonian and field redefinition. This relation can be applied to single field inflation, multi-field inflation and the curvaton scenario. This relation can also be generalized
Li, Miao, Wang, Yi
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Influence of Ground Motion Non-Gaussianity on Seismic Performance of Buildings
BuildingsThe non-Gaussian feature of seismic ground motion has been reported in some works. However, there remains a lack of research on the influence of the ground motion non-Gaussianity on the seismic performance of buildings, which motivates this study.
Xingliang Ma, Zhen Liu
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The homogeneous explanation of Fickian yet non Gaussian diffusion
New Journal of PhysicsThis article examines the phenomenon known as Fickian-yet-non-Gaussian diffusion (FnGD). We provide the first homogeneous interpretation of FnGD: we show that in a medium treated as homogeneous, non-Gaussian propagators can arise because the equilibrium ...
Chiara Pezzotti +2 more
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Rao and Wald Tests in Nonzero-Mean Non–Gaussian Sea Clutter
Remote SensingThe non-Gaussian nature of radar-observed clutter echoes induces performance degradation in the context of remote sensing target detection when using conventional Gaussian detectors. To enhance target detection performance, this study addresses the issue
Haoqi Wu +3 more
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An Improved Gaussian Mixture CKF Algorithm under Non-Gaussian Observation Noise
Discrete Dynamics in Nature and Society, 2016 In order to solve the problems that the weight of Gaussian components of Gaussian mixture filter remains constant during the time update stage, an improved Gaussian Mixture Cubature Kalman Filter (IGMCKF) algorithm is designed by combining a Gaussian ...
Hongjian Wang, Cun Li
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Optimal estimation of non-Gaussianity
Physical Review D, 2005 We systematically analyze the primordial non-Gaussianity estimator used by the Wilkinson Microwave Anisotropy Probe (WMAP) science team with the basic ideas of estimation theory in order to see if the limited Cosmic Microwave Background (CMB) data is being optimally utilized.
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Tests for primordial non-Gaussianity [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We investigate the relative sensitivities of several tests for deviations from Gaussianity in the primordial distribution of density perturbations. We consider models for non-Gaussianity that mimic that which comes from inflation as well as that which comes from topological defects.
VERDE L +3 more
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On the Shaker Simulation of Wind-Induced Non-Gaussian Random Vibration
Shock and Vibration, 2016 Gaussian signal is produced by ordinary random vibration controllers to test the products in the laboratory, while the field data is usually non-Gaussian.
Fei Xu, Chuanri Li, Tongmin Jiang
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Persistent homology and non-Gaussianity [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 21 pages, 11 ...
Cole, Alex, Shiu, Gary
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Jixie qiangdu, 2023 In order to study the frequency domain calculation method of non-Gaussian excitation, Gaussian mixture model（GMM） is introduced. The measured non-Gaussian excitation is transformed into probabilistic power spectrum（PPSD） through GMM model, so that the ...
XU Yang +3 more
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