Results 31 to 40 of about 38,373 (217)

The Beta-Gompertz Distribution

open access: yesRevista Colombiana de Estadística, 2014
In this paper, we introduce a new four-parameter generalized version of the Gompertz model which is called Beta-Gompertz (BG) distribution. It includes some well-known lifetime distributions such as beta-exponential and generalized Gompertz distributions as special sub-models.
JAFARI, ALI AKBAR   +2 more
openaire   +6 more sources

The Kumaraswamy Gompertz Distribution [PDF]

open access: yesJournal of Data Science, 2021
We introduce the four-parameter Kumaraswamy Gompertz distribution. We obtain the moments, generating and quantilefunctions, Shannon and R'enyi entropies, mean deviations and Bonferroni and Lorenz curves. We provide a mixture representation for the density function of the order statistics.
Raquel C. da Silva   +3 more
openaire   +1 more source

Effect of Initial Substrate pH and Light Intensity on Biohydrogen Production through photo-fermentation from Palm Oil Mill Effluent (POME) [PDF]

open access: yesJournal of Renewable Energy and Environment
The Palm Oil Mill Effluent (POME) still contains a significant quantity of organic substances that can potentially serve as raw materials for biohydrogen production.
Furqon Furqon   +3 more
doaj   +1 more source

Nonlinear models of Brazilian sheep in adjustment of growth curves

open access: yesCzech Journal of Animal Science, 2018
Growth curves of the Morada Nova sheep males and females were described using nonlinear models and the relationships between body weight and thoracic circumference were evaluated.
Claudia Cristina Paro de Paz   +5 more
doaj   +1 more source

The Gompertz model revisited and modified using reaction networks: Mathematical analysis

open access: yesBiomath, 2021
In the present work we discuss the?usage of the framework of chemical reaction networks for the construction of dynamical models and their mathematical analysis.
Svetoslav Marinov Markov
doaj   +1 more source

Statistical Modeling using A New Hybrid Form of The Inverted Exponential Distribution with Different Estimation Methods

open access: yesInPrime, 2022
This paper introduces a new four-parameter distribution called the exponentiated Gompertz generated inverted exponential (EGGIE) distribution. Explicit expressions of the structural properties such as the ordinary and incomplete moments, probability ...
O. D. Adubisi, C. E. Adubisi
doaj   +1 more source

Potek fermentacije škroba ob dodatku različnih vrst taninov

open access: yesActa Agriculturae Slovenica, 2007
Proučevali smo vpliv vrste in koncentracije različnih taninskih izvlečkov na kinetiko in vitro fermentacije škroba v vampnem soku. K škrobu smo dodali tri taninske izvlečke: kostanjev tanin (F75), kebračo tanin (QUE) in taninsko kislino (TAK) v različnih
Urška SIVKA, Andrej LAVRENČIČ
doaj   +1 more source

On Performance of Two-Parameter Gompertz-Based X¯ Control Charts

open access: yesJournal of Probability and Statistics, 2020
In this paper, two methods of control chart were proposed to monitor the process based on the two-parameter Gompertz distribution. The proposed methods are the Gompertz Shewhart approach and Gompertz skewness correction method.
Johnson A. Adewara   +2 more
doaj   +1 more source

Finding the Growth Rate of a Tumor

open access: yesUndergraduate Journal of Mathematical Modeling: One + Two, 2020
The Gompertz method is used to analyze the growing glioblastoma data and estimate how accurate the results of growth over time are. The Gompertz curve is expressed as V(t) = αe-βe-γt. The data from the tumor is graphed in Excel along with the values from
Christine Staat
doaj   +1 more source

Proof of Conjectures on the Standard Deviation, Skewness and Kurtosis of the Shifted Gompertz Distribution

open access: yesRevstat Statistical Journal, 2021
Three conjectures on the standard deviation, skewness and kurtosis of the shifted Gompertz distribution, as the shape parameter increases to +∞, are proved. In this regard, the exponential integral function and polygamma functions are used in the proofs.
Fernando Jiménez Torres
doaj   +1 more source

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