Results 1 to 10 of about 275,635 (230)

KURTOSIS

open access: yesPesquimat, 2014
This work reviews the literature on kurtosis from Pearson'e definition in the early 1900's to our days. The evolution of the concept of kurtosis is described and the different ways of quantifying it are compared; graphs that help to understand the ideas ...
María Edith Seier Zúñiga
doaj   +4 more sources

Kurtosis transformation and kurtosis ordering [PDF]

open access: yes, 2003
Leptokurtic distributions can be generated by applying certain non-linear transformations to a standard normal random variable. Within this work we derive general conditions for these transformations which guarantee that the generated distributions are ...
Fischer, Matthias J., Klein, Ingo
core   +3 more sources

Augoregressive Conditional Kurtosis [PDF]

open access: yes, 2002
This paper 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
Chris Brooks   +2 more
core   +1 more source

Kurtosis loss as a metric for hearing protection evaluation in impulsive noise environments [PDF]

open access: yesJASA Express Letters, 2022
Hearing loss standards depend on noise power and duration but are incomplete when the noise is primarily impulsive in nature rather than maintaining a continuous power level.
David A. Anderson, Theodore F. Argo
doaj   +1 more source

A Novel Approach for Segment-Length Selection Based on Stationarity to Perform Effective Connectivity Analysis Applied to Resting-State EEG Signals

open access: yesSensors, 2022
Connectivity among different areas within the brain is a topic that has been notably studied in the last decade. In particular, EEG-derived measures of effective connectivity examine the directionalities and the exerted influences raised from the ...
Leonardo Góngora   +4 more
doaj   +1 more source

Spatial Evolution of Skewness and Kurtosis of Unidirectional Extreme Waves Propagating over a Sloping Beach

open access: yesJournal of Marine Science and Engineering, 2022
The understanding of the occurrence of extreme waves is crucial to simulate the growth of waves in coastal regions. Laboratory experiments were performed to study the spatial evolution of the statistics of group-focused waves that have a relatively broad-
Iskander Abroug   +2 more
doaj   +1 more source

Comparative Study of Monoexponential, Intravoxel Incoherent Motion, Kurtosis, and IVIM-Kurtosis Models for the Diagnosis and Aggressiveness Assessment of Prostate Cancer

open access: yesFrontiers in Oncology, 2020
Objective: This study aimed to compare the potential of monoexponential model (MEM), intravoxel incoherent motion (IVIM) model, kurtosis model, and IVIM–kurtosis model in the diagnosis and aggressiveness assessment of prostate cancer (PCa).Materials and ...
Ying Liu   +12 more
doaj   +1 more source

GRANULOMETRIC ANALYSIS OF THE SARMATIAN SANDS FROM THE MOESIAN PLATFORM DESCRIBING ASPECTS OF THE DEPOSITIONAL ENVIRONMENT [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology, 2023
The Moesian Platform pertaining to Romania gathers numerous petroleum and gas reservoirs of various sizes and types of hydrocarbons, from black oil to shallow gas reservoirs. They are sited in reservoir rocks having different lithologies (limestone, sand,
Jacota Dan-Romulus
doaj   +1 more source

Correlation tensor magnetic resonance imaging

open access: yesNeuroImage, 2020
Diffusional Kurtosis Magnetic Resonance Imaging (DKI) quantifies the extent of non-Gaussian water diffusion, which has been shown to be a sensitive biomarker for microstructure in health and disease.
Rafael Neto Henriques   +2 more
doaj   +1 more source

Constrained Nonnegative Matrix Factorization for Blind Hyperspectral Unmixing Incorporating Endmember Independence

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Hyperspectral unmixing (HU) has become an important technique in exploiting hyperspectral data since it decomposes a mixed pixel into a collection of endmembers weighted by fractional abundances.
E. M. M. B. Ekanayake   +7 more
doaj   +1 more source

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