Results 51 to 60 of about 19,767 (209)

A Modification of the Gompertz Distribution Based on the Class of Extended-Weibull Distributions

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
This paper introduces a new four-parameter extension of the generalized Gompertz distributions. This distribution involves some well-known distributions such as extension of generalized exponential, generalized exponential, and generalized Gompertz ...
Mohammad Reza Kazemi   +2 more
doaj   +1 more source

The Marshall – Olkin Teissier generated model for lifetime data

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2022
An accurate mathematical inference depends on the experimental design and the model adopted in the process. Thus, in this study Marshall – Olkin Teissier generated distribution was used to present the distribution of the true nature of lifetime data. The
Joseph Thomas Eghwerido
doaj   +1 more source

Why we age

open access: yesBiological Reviews, EarlyView.
ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley   +1 more source

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   +1 more source

Electromagnetic emission from long-lived binary neutron star merger remnants II: lightcurves and spectra [PDF]

open access: yes, 2015
Recent observations indicate that in a large fraction of binary neutron star (BNS) mergers a long-lived neutron star (NS) may be formed rather than a black hole.
Ciolfi, Riccardo, Siegel, Daniel M.
core   +3 more sources

Longitudinal Tumor Size and Survival Modeling for Exposure–Response Analysis of Drugs with Frequent Dose Reductions: Dose Justification of Abemaciclib in Patients with Metastatic Breast Cancer

open access: yesClinical Pharmacology &Therapeutics, EarlyView.
Abemaciclib is an oral anticancer drug indicated for treatment of HR+ HER2‐ breast cancer. Dose modifications due to side effects are frequent, thus drug exposures change over time as a result of altering the dose or temporarily withholding abemaciclib treatment.
Emmanuel Chigutsa   +2 more
wiley   +1 more source

A Note on a Characterization of Gompertz-Verhulst Distribution [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2014
Characterization of a probability distribution plays an important role in probability and statistics. This paper considers a new characterization of Gompertz-Verhulst distribution. It is hoped that the findings of the paper will be useful for researchers
M. Ahsanullah   +2 more
doaj   +1 more source

Applications and Sexual Version of a Simple Model for Biological Ageing

open access: yes, 2001
We use a simple model for biological ageing to study the mortality of the population, obtaining a good agreement with the Gompertz law. We also simulate the same model on a square lattice, considering different strategies of parental care.
A. O. Sousa   +3 more
core   +2 more sources

Mechanical Behaviour of Vacuum‐Infused GFRP Composites at Elevated Temperatures—Influence of Fibre Architecture

open access: yesFire and Materials, EarlyView.
ABSTRACT This study addresses the influence of fibre architecture on the mechanical properties of vacuum‐infused glass fibre reinforced polymer (GFRP) composites at elevated temperatures (ET). Laminates with three different fibre configurations—unidirectional (UD), bidirectional 0°/90° cross‐ply (BD), and ±45° off‐axis angle‐ply (OA) – were tested in ...
Eloísa Castilho   +4 more
wiley   +1 more source

Classical and Bayesian estimation for Gompertz distribution under the unified hybrid censored sampling with application

open access: yesAIP Advances, 2023
This study discusses the Gompertz distribution’s statistical inference using unified hybrid censored data. Under various loss functions, the maximum likelihood and Bayesian approaches are explored for estimating the parameters for the Gompertz ...
O. E. Abo-Kasem   +4 more
doaj   +1 more source

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