Results 1 to 10 of about 2,142,996 (217)

The unintended impact of housing provident fund on income inequality in urban China

open access: yesChina Economic Quarterly International, 2021
We use the China Household Income Project (CHIP) data to evaluate the impact of the Housing Provident Fund (HPF) on income inequality in urban China. We find that urban residents differ significantly in their accessibility to and intensity of utilization
Yunhe Lu, Haiyuan Wan
doaj   +1 more source

Properties and Applications of a New Family of Skew Distributions

open access: yesMathematics, 2021
We introduce two families of continuous distribution functions with not-necessarily symmetric densities, which contain a parent distribution as a special case.
Emilio Gómez-Déniz   +3 more
doaj   +1 more source

Application of python libraries for variance, normal distribution and Weibull distribution analysis in diagnosing and operating production systems

open access: yesDiagnostyka, 2021
The use of statistical methods in the diagnosis of production processes dates back to the beginning of the 20th century. Widespread computerization of processes made enterprises face the challenge of processing large sets of measurement data. The growing
Andrzej Chmielowiec, Leszek Klich
doaj   +1 more source

A New Family of Distributions Based on Proportional Hazards

open access: yesMathematics, 2022
In this article, we introduce a new family of symmetric-asymmetric distributions based on skew distributions and on the family of order statistics with proportional hazards.
Guillermo Martínez-Flórez   +4 more
doaj   +1 more source

A proposed approach for approximating lower truncated normal cumulative distribution: application to reliability of used devices

open access: yesCogent Engineering, 2022
The distribution of a normally distributed hardware is changed to a lower truncated normal distribution after it has been in service for a certain period.
Mohammad M. Hamasha   +4 more
doaj   +1 more source

α-normal distribution

open access: yesLietuvos Matematikos Rinkinys, 1999
In this paper I introduce and consider the new class of distributions  –  natural widening of normal distribution.
Vaidotas Kanišauskas
doaj   +3 more sources

Analysis of distributions and simulation of demand and supply in a spider web model using statistica software [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2023
The paper presents the relationships between prices, demand and supply in the electric bicyclemarket, which are described by spider web model. The aim of the work is to analyse the probabilitydistributions of price, demand and supply and to simulate ...
Ewa Falkiewicz
doaj   +1 more source

A new very simply explicitly invertible approximation for the standard normal cumulative distribution function

open access: yesAIMS Mathematics, 2022
This paper proposes a new very simply explicitly invertible function to approximate the standard normal cumulative distribution function (CDF). The new function was fit to the standard normal CDF using both MATLAB's Global Optimization Toolbox and the ...
Jessica Lipoth   +3 more
doaj   +1 more source

An Extension of the Truncated-Exponential Skew- Normal Distribution

open access: yesMathematics, 2021
In the paper, we present an extension of the truncated-exponential skew-normal (TESN) distribution. This distribution is defined as the quotient of two independent random variables whose distributions are the TESN distribution and the beta distribution ...
Pilar A. Rivera   +4 more
doaj   +1 more source

COVID-19: Nothing is Normal in this Pandemic

open access: yesJournal of Epidemiology and Global Health, 2021
This manuscript brings attention to inaccurate epidemiological concepts that emerged during the COVID-19 pandemic. In social media and scientific journals, some wrong references were given to a “normal epidemic curve” and also to a “log-normal curve ...
Luzia Gonçalves   +4 more
doaj   +1 more source

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