Results 11 to 20 of about 72,082 (280)

Kurtosis modelling by means of the J-transformation [PDF]

open access: yesAllgemeines Statistisches Archiv, 2004
The H–family of distributions or H–distributions, introduced by Tukey (1960; 1977), are generated by a single transformation of the standard normal distribution and allow for leptokurtosis represented by the parameter h. Alternatively, Haynes et al. (1997) generated leptokurtic distributions by applying the K–transformation to the normal distribution ...
Fischer, Matthias J., Klein, Ingo
openaire   +4 more sources

Complex-valued least mean Kurtosis adaptive filter algorithm [PDF]

open access: yes2016 24th Signal Processing and Communication Application Conference (SIU), 2016
In this study, a complex-valued least mean Kurtosis (CLMK) adaptive filter algorithm is designed for processing complex-valued signals. The performance of the designed algorithm is tested on a complex-valued system identification and compared the complex-valued least mean square (CLMS) and complex-valued normalized least mean square (CNLMS) algorithms.
Engin Cemal Menguc, Nurettin Acir
core   +7 more sources

Mean Absolute Deviation (About Mean) Metric for Kurtosis

open access: yesAdvance Research in Sciences (ARS)
In this paper, we introduce a MAD (about mean) alternative metric to classical kurtosis. Using the formula for mean absolute deviation, we identify two special points and construct the corresponding distributions with these reference points as their means. The proposed alternative is computed from mean absolute deviations for these distributions. These
Pinsky, Eugene
openaire   +3 more sources

Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies

open access: yesPhysics Letters B
The first measurements of skewness and kurtosis of mean transverse momentum (〈pT〉) fluctuations are reported in Pb–Pb collisions at sNN = 5.02 TeV, Xe–Xe collisions at sNN = 5.44 TeV and pp collisions at s=5.02 TeV using the ALICE detector.
S. Acharya   +1054 more
doaj   +20 more sources

Exploring mean kurtosis in MR diffusion kurtosis imaging for early detection of lumbar spine degeneration: a systematic review. [PDF]

open access: yesF1000Res
Objectives Degenerative lumbar spine disease, a leading cause of chronic pain and disability in older adults, results from the progressive degeneration of intervertebral discs. This systematic review evaluates the role of mean kurtosis (MK) as a diffusion kurtosis imaging (DKI) parameter in the early diagnosis of degenerative spine disease and its ...
Barnes NA   +6 more
europepmc   +4 more sources

Combined Application of Quantitative Susceptibility Mapping and Diffusion Kurtosis Imaging Techniques to Investigate the Effect of Iron Deposition on Microstructural Changes in the Brain in Parkinson’s Disease

open access: yesFrontiers in Aging Neuroscience, 2022
ObjectivesBrain iron deposition and microstructural changes in brain tissue are associated with Parkinson’s disease (PD). However, the correlation between these factors in Parkinson’s disease has been little studied.
Lin Yang   +12 more
doaj   +1 more source

Fast imaging of mean, axial and radial diffusion kurtosis [PDF]

open access: yesNeuroImage, 2016
Diffusion kurtosis imaging (DKI) is being increasingly reported to provide sensitive biomarkers of subtle changes in tissue microstructure. However, DKI also imposes larger data requirements than diffusion tensor imaging (DTI), hence, the widespread adaptation and exploration of DKI would benefit from more efficient acquisition and computational ...
Brian Hansen   +2 more
openaire   +3 more sources

Microstructure of Brain Nuclei in Early Parkinson’s Disease: Longitudinal Diffusion Kurtosis Imaging

open access: yesJournal of Parkinson’s Disease, 2023
Background: Diffusion kurtosis imaging provides in vivo measurement of microstructural tissue characteristics and could help guide management of Parkinson’s disease.
Thomas Welton   +12 more
doaj   +1 more source

Survival Prediction Analysis in Glioblastoma With Diffusion Kurtosis Imaging

open access: yesFrontiers in Oncology, 2021
Simple SummaryGlioblastoma (GBM) is the most common and aggressive primary brain tumor. Diffusion kurtosis imaging (DKI) has characterized non-Gaussian diffusion behaviors in brain normal tissue and gliomas, but there are very limited efforts in ...
Yuan Li   +8 more
doaj   +1 more source

Particle-size Characteristics and Sedimentary Environment of Dune Sediments in Southwestern Qaidam Basin

open access: yesShuitu baochi tongbao, 2022
[Objective] The particle size characteristics and sedimentary environment of dune sediments in the southwest margin of Qaidam Basin were analyzed in order to provide basic data to support sand control and safe operation of the Golmud-Korla Railway ...
Wang Meng   +4 more
doaj   +1 more source

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