Results 11 to 20 of about 38,373 (217)

Some general Gompertz and Gompertz-Makeham life expectancy models

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
Life expectancy models are highly important, as they indicate the populations health. The present models consider several types of factors, and by analyzing them we extend the formulae to new, mixed types in order to create particular representations ...
Drăgan Mihăiţă
doaj   +2 more sources

Statistical Features and Estimation Methods for Half-Logistic Unit-Gompertz Type-I Model

open access: yesMathematics, 2023
In this study, we propose a new three-parameter lifetime model based on the type-I half-logistic G family and the unit-Gompertz model, which we named the half-logistic unit Gompertz type-I distribution.
Anum Shafiq   +4 more
doaj   +3 more sources

The Gompertz-Pareto Income Distribution [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2010
This work analyzes the Gompertz-Pareto distribution (GPD) of personal income, formed by the combination of the Gompertz curve, representing the overwhelming majority of the economically less favorable part of the population of a country, and the Pareto ...
Abdalla   +54 more
core   +2 more sources

Transmuted Generalized Gompertz distribution with application [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2017
This paper introduces the four parameter transmuted generalized Gompertz distribution which includes the transmuted Gompertz, transmuted generalized exponential, transmuted exponential, Gompertz, generalized exponential and exponential distributions as ...
Muhammad Shuaib Khan   +2 more
doaj   +4 more sources

Numerical Methods on the Triple Informative Prior Distribution for the Failure Rate Basic Gompertz Model [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2022
In this paper, it has been dealt with basic Gompertz distribution. The maximum likelihood, Bayes methods of estimation were used to estimate the unknown shape parameter.
Nadia Al-Obedy   +2 more
doaj   +1 more source

Kinetic Study of Biogas Production from Animal Manure and Organic Waste in Semarang City by Using Anaerobic Digestion Method

open access: yesIndonesian Journal of Chemistry, 2021
The biogas fermentation from animal manure and organic waste was investigated with a comparison percentage of raw material used inside the digester with the anaerobic digestion process. Animal manure consists of cow dung and chicken manure, while organic
Fahmi Arifan   +2 more
doaj   +1 more source

Biological and statistical interpretation of size-at-age, mixed-effects models of growth [PDF]

open access: yesRoyal Society Open Science, 2020
The differences in life-history traits and processes between organisms living in the same or different populations contribute to their ecological and evolutionary dynamics.
Simone Vincenzi   +2 more
doaj   +1 more source

Ever since gompertz [PDF]

open access: yesDemography, 1997
AbstractIn 1825 British actuary Benjamin Gompertz made a simple but important observation that a law of geometrical progression pervades large portions of different tables of mortality for humans. The simple formula he derived describing the exponential rise in death rates between sexual maturity and old age is commonly referred to as the Gompertz ...
S J, Olshansky, B A, Carnes
openaire   +2 more sources

Potential autonomous vehicle ownership growth in Hungary using the Gompertz model

open access: yesProduction Engineering Archives, 2023
Autonomous Vehicles (AVs) are anticipated to bring forth a multitude of advantages for upcoming mobility.These potential benefits and many others vary substantially by the market share of AVs.
Alatawneh Anas, Torok Adam
doaj   +1 more source

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

open access: yesInternational Journal of Renewable Energy Development, 2023
The need of renewable energy is paramount important as it is expected to replace fossil energy. One of renewable energy commonly used for rural area is biomass-based energy.
H Hadiyanto   +6 more
doaj   +1 more source

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