Results 1 to 10 of about 77,296 (161)

KURTOSIS

Pesquimat, 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

gKFA: a geometric framework for kurtosis fractional anisotropy [PDF]

Scientific Reports
Diffusion kurtosis imaging (DKI) extends diffusion tensor imaging (DTI) by incorporating non-Gaussian diffusion effects through a fourth-order kurtosis tensor.
Sumit Kaushik, Avinash Bansal, Jan Kubíček, Martin Haváček, Amit Khairnar   +4 more
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Kurtosis loss as a metric for hearing protection evaluation in impulsive noise environments [PDF]

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

Frontiers 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, Ying Liu, Xuan Wang, Yadong Cui, Yuwei Jiang, Lu Yu, Ming Liu, Wei Zhang, Kaining Shi, Jintao Zhang, Chen Zhang, Chunmei Li, Min Chen   +12 more
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

Sensors, 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, Alessia Paglialonga, Alfonso Mastropietro, Giovanna Rizzo, Riccardo Barbieri   +4 more
doaj   +1 more source

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

Journal 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, Reine Matar, Nizar Abcha   +2 more
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Correlation tensor magnetic resonance imaging

NeuroImage, 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, Sune Nørhøj Jespersen, Noam Shemesh   +2 more
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GRANULOMETRIC ANALYSIS OF THE SARMATIAN SANDS FROM THE MOESIAN PLATFORM DESCRIBING ASPECTS OF THE DEPOSITIONAL ENVIRONMENT [PDF]

Romanian 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
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Constrained Nonnegative Matrix Factorization for Blind Hyperspectral Unmixing Incorporating Endmember Independence

IEEE 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, H. M. H. K. Weerasooriya, D. Y. L. Ranasinghe, S. Herath, B. Rathnayake, G. M. R. I. Godaliyadda, M. P. B. Ekanayake, H. M. V. R. Herath   +7 more
doaj   +1 more source

Correlation Between Diagnostic Value of Diffusion Kurtosis Imaging for Nasopharyngeal Carcinoma and Ki-67 Expression

B-ENT, 2023
Objective: The objective of this study was to observe the correlation between multiple quantitative parameters of magnetic resonance diffusion kurtosis imaging and expression of proliferation-related antigen Ki-67 in nasopharyngeal carcinoma.
Yingning Wu, Lina Huang, Baosheng Li, Hengguo Li   +3 more
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