Results 21 to 30 of about 139,023 (311)

The visual reaction time distribution in the tasks with different demands on information processing

open access: yesActa Gymnica, 2014
Background:Reaction tests are a part of the neuropsychological assessment of the individual. The design of these tests and selection of the appropriate measures of reaction time (RT) should come out from the distribution qualities of RTs.
Rudolf Psotta
doaj   +1 more source

Detection of focal electroencephalogram signals using higher-order moments in EMD-TKEO domain

open access: yesHealthcare Technology Letters, 2019
Detection of epileptogenic focus based on electroencephalogram (EEG) signal screening is an important pre-surgical step to remove affected regions inside the human brain.
Soumya Chatterjee
doaj   +1 more source

Predicted Systematic and Idiosyncratic Skewness: New Evidence from Pricing the Third Moment of Stock Return ‎Distribution [PDF]

open access: yesJournal of Asset Management and Financing, 2021
Lottery preferences cause investors’ tendency toward high skewed (third moment of return distribution) stocks. Such preferences differ based on various market conditions. In this study, using predicted systematic and idiosyncratic skewness ranks, pricing
Maryam Davallou, Amir Hossein Shamshiri
doaj   +1 more source

Definição do tamanho amostral usando simulação Monte Carlo para o teste de normalidade baseado em assimetria e curtose. II.: abordagem multivariada Sample size definition using Monte Carlo simulation for the normality test based on skewness and kurtosis. II.: multivariate approach

open access: yesCiência e Agrotecnologia, 2003
Realizou-se este trabalho com o objetivo de determinar um tamanho amostral ótimo para as estatísticas univariadas de assimetria e curtose (z1 e z2) que, neste caso, foram adaptadas para o caso multivariado, e as estatísticas multivariadas de assimetria e
Andréa Cristiane dos Santos   +1 more
doaj   +1 more source

Importance of the first thinning in young mixed Norway spruce and European beech stands

open access: yesJournal of Forest Science, 2017
Experimental results from the first thinning in mixed stands are not broadly experienced by forestry practice. To extend the experience with the thinning of a mixed stand, we studied thinned and unthinned mixtures of Norway spruce with European beech on ...
Jiří NOVÁK   +3 more
doaj   +1 more source

Option pricing on sesame price using jump diffusion models [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2020
In this paper, we aim at developing a model for option pricing to reduce the risks associated with Ethiopian sesame price fluctuations. The White Humera Gondar Sesame Grade 3 (WHGS3) price, which is recorded from 5 November 2010 to 30 March 2018 at ...
T. Berhane   +3 more
doaj   +1 more source

Research Paper: A Numerical Generation of Gaussian and Non-Gaussian Isotropic/Anisotropic Rough Surfaces [PDF]

open access: yesفیزیک کاربردی ایران
In the present study, the computer simulation has been used to generate the (1+1) and (2+1) surfaces with two types of correlation function Gaussian and correlation function Exponential forms.
Zhaleh Ebrahiminejad
doaj   +1 more source

Jackknife Empirical Likelihood Inferences for the Skewness and Kurtosis [PDF]

open access: yes, 2015
Skewness and kurtosis are measures used to describe shape characteristics of distributions. In this thesis, we examine the interval estimates about the skewness and kurtosis by using jackknife empirical likelihood (JEL), adjusted JEL, extended JEL ...
Zhang, Yan
core   +1 more source

Some Statistical Aspects of the Truncated Multivariate Skew-t Distribution

open access: yesMathematics, 2022
The multivariate skew-t distribution plays an important role in statistics since it combines skewness with heavy tails, a very common feature in real-world data.
Raúl Alejandro Morán-Vásquez   +2 more
doaj   +1 more source

Mean-Variance Optimization Is a Good Choice, But for Other Reasons than You Might Think

open access: yesRisks, 2020
Mean-variance portfolio optimization is more popular than optimization procedures that employ downside risk measures such as the semivariance, despite the latter being more in line with the preferences of a rational investor.
Andrea Rigamonti
doaj   +1 more source

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