Results 11 to 20 of about 416,768 (256)

Approximations to the Distribution of Weighted Log-Normal Variates [PDF]

open access: yesThe Egyptian Statistical Journal, 1976
This work introduces three different approximations to the distribution of weighted log-normal variates. Numerical methods are used to express the density function as a Gauss-Hermite quadrature and a Gauss-Laguerre quadrature. The third approximation was
Hoda Rashad, Ahmed El Mawaziny
doaj   +1 more source

Probability Assessment of the Mechanical and Low-Cycle Properties of Structural Steels and Aluminium

open access: yesMetals, 2021
Key mechanical properties used in low-cycle strength and durability calculations are the strength (proportional limit stress, σpr; relative yield strength, σ0.2; and ultimate tensile stress, σu) and strain properties (proportional limit strain, epr ...
Žilvinas Bazaras   +3 more
doaj   +1 more source

Improving the Performance of Turbo-Coded Systems under Suzuki Fading Channels

open access: yesJournal of Low Power Electronics and Applications, 2019
In this paper, the performance of coded systems is considered in the presence of Suzuki fading channels, which is a combination of both short-fading and long-fading channels.
Ali J. Al-Askery   +2 more
doaj   +1 more source

Swimming eukaryotic microorganisms exhibit a universal speed distribution

open access: yeseLife, 2019
One approach to quantifying biological diversity consists of characterizing the statistical distribution of specific properties of a taxonomic group or habitat. Microorganisms living in fluid environments, and for whom motility is key, exploit propulsion
Maciej Lisicki   +3 more
doaj   +1 more source

Estudo da precipitação efetiva para o município de Lavras, MG Effective rainfall study in the municipality of Lavras, MG

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2000
A determinação da precipitação efetiva apresenta grande relevância no estudo da precipitação com fins de aplicação na agricultura, visto que esta parcela da precipitação é realmente aquela que estará contribuindo com a água disponível do solo.
Silvio César Sampaio   +3 more
doaj   +1 more source

Minimum K-S estimator using PH-transform technique [PDF]

open access: yesSuan Sunandha Rajabhat University Journal of Science and Technology, 2016
In this paper, we propose an improvement of the Minimum Kolmogorov-Smirnov (K-S) estimator using proportional hazards transform (PH-transform) technique. The data of experiment is 47 fire accidents data of an insurance company in Thailand.
Somchit Boonthiem   +3 more
doaj   +1 more source

Modelling and mapping weekly rainfall for crop planning in north-western Himalayan states

open access: yesThe Indian Journal of Agricultural Sciences, 2021
Modelling and mapping of weekly rainfall was carried out for NW Himalayan states of India for kharif crop planning. Based on the findings of the study it was observed that, J&K states with area coverage of 2.7 m ha witnessed maximum rainy days at 25 SMW ...
C JANA   +4 more
doaj   +1 more source

TWO-PARAMETER GAMMA DISTRIBUTION AND LOG NORMAL DISTRIBUTION FOR DERIVATION OF SYNTHETIC UNIT HYDROGRAPH

open access: yesJournal of Engineering, 2011
Most available methods for unit hydrographs (SUH) derivation involve manual, subjective fitting of a hydrograph through a few data points. The use of probability distributions for the derivation of synthetic hydrographs had received much attention ...
Mohammed Rashid Dhahir
doaj   +1 more source

The A Priori Procedure for Estimating the Mean in Both Log-Normal and Gamma Populations and Robustness for Assumption Violations

open access: yesMethodology, 2022
Although the literature on the a priori procedure, designed to help researchers determine the sample sizes they should use in their substantive research, is expanding rapidly, there are two important limitations.
Lixia Cao   +4 more
doaj   +1 more source

Bayesian inference for quantiles of the log‐normal distribution

open access: yesBiometrical Journal, 2020
AbstractThe log‐normal distribution is very popular for modeling positive right‐skewed data and represents a common distributional assumption in many environmental applications. Here we consider the estimation of quantiles of this distribution from a Bayesian perspective. We show that the prior on the variance of the log of the variable is relevant for
Aldo Gardini   +2 more
openaire   +4 more sources

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