Results 1 to 10 of about 9,698 (163)
Some general Gompertz and Gompertz-Makeham life expectancy models
Analele 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
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Statistical Features and Estimation Methods for Half-Logistic Unit-Gompertz Type-I Model
Mathematics, 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
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The use of Gompertz models in growth analyses, and new Gompertz-model approach: An addition to the Unified-Richards family [PDF]
PLoS ONE, 2017 The Gompertz model is well known and widely used in many aspects of biology. It has been frequently used to describe the growth of animals and plants, as well as the number or volume of bacteria and cancer cells.
Kathleen M C Tjørve
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PLoS Computational Biology, 2020 Tumor growth curves are classically modeled by means of ordinary differential equations. In analyzing the Gompertz model several studies have reported a striking correlation between the two parameters of the model, which could be used to reduce the ...
Cristina Vaghi +2 more
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Transmuted Generalized Gompertz distribution with application [PDF]
Journal 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
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The generalized Gompertz distribution
Applied Mathematical Modelling, 2013 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
El-Gohary, A. +2 more
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A unifying theory of aging and mortality [PDF]
Scientific ReportsIn this paper, we advance the network theory of aging and mortality by developing a causal mathematical model for the mortality rate. First, we show that in large networks, where health deficits accumulate at nodes representing health indicators, the ...
Valentin Flietner +5 more
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Numerical Methods on the Triple Informative Prior Distribution for the Failure Rate Basic Gompertz Model [PDF]
مجلة 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
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Indonesian 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
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Biological and statistical interpretation of size-at-age, mixed-effects models of growth [PDF]
Royal 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
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