Results 21 to 30 of about 73,208 (162)
Autoregressive Conditional Kurtosis [PDF]
Journal of Financial Econometrics, 2005 This article proposes a new model for autoregressive conditional heteroscedasticity and kurtosis. Via a time-varying degrees of freedom parameter, the conditional variance and conditional kurtosis are permitted to evolve separately. The model uses only the standard Student’s t-density and consequently can be estimated simply using maximum likelihood ...
Brooks, Chris +3 more
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Research on gear crack diagnosis of the planet gear transmission
The Journal of Engineering, 2019 Objected to the planetary gear transmission, research on the fault diagnosis of gear cracks is mainly carried out with method of EEMD decomposition and Envelope demodulation.
Chao Ma +3 more
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On the Quantification of the GNSS Signals’ Quality for RFI Assessment
Engineering Proceedings, 2023 The performance of radio-frequency interference (RFI) detection and localization could be improved if they are applied on good quality inputs. RFI assessment is an important aspect of evaluating overall signal quality.
Naveed Ahmed
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Classification of RCS sequences based on KL divergence
The Journal of Engineering, 2019 Radar cross section (RCS) is an important characteristic of radar targets. The mean, variance, skewness, kurtosis, varying patterns of RCS sequences provide rich features for radar target classification.
Qiang Cheng, Li Chen, Yaolin Zhang
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Nihon Kikai Gakkai ronbunshu, 2015 This paper presents an application of equivalent non-Gaussian excitation method for the response analysis of systems subjected to non-Gaussian random excitation with an asymmetric probability distribution. The non-Gaussian excitation is prescribed by the
Takahiro TSUCHIDA +2 more
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Feature Map Activation Analysis for Object Key-Point Detection
IEEE Access, 2023 Determining object location information in an image can enable more accurate CNN classification. Several extended CNN models have been developed to include both object location and classification into a unified model, at a cost of increasing compute ...
Allen Rush, Sally Wood
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The Annals of Mathematical Statistics, 1948 It is well known that, if the fourth moment about the mean of a frequency distribution equals the square of the variance, then the frequencies are piled up at exactly two points, namely, the two points that are one standard deviation away from the mean.
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Frontiers in Oncology, 2018 PurposeTo examine the usefulness of rich diffusion protocols with high b-values and varying diffusion time for probing microstructure in bone metastases.
Colleen Bailey +11 more
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Journal of the Royal Statistical Society Series B: Statistical Methodology, 1964 Summary This note “rediscovers” the original interpretation of kurtosis as an indicator of “a prominent peak and a prominent tail” on the density curve. A formal proof that such curves have indeed relatively high fourth moments is given. A comment is made concerning the recent decline of this correct classical interpretation.
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Noise and Health, 2012 This study examined: (1) the value of using the statistical metric, kurtosis [β(t)], along with an energy metric to determine the hazard to hearing from high level industrial noise environments, and (2) the accuracy of the International Standard ...
Robert I Davis +9 more
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