Results 71 to 80 of about 37,981 (219)

Bootstrap Resampling in Gompertz Growth Model with Levenberg–Marquardt Iteration

JTAM (Jurnal Teori dan Aplikasi Matematika), 2022
Soybean plants have limited growth with a planting period of 12 weeks, which causes the observed sample to be very small. A small sample of soybean plant growth observations can be bias causes in the conclusion of prediction results on soybean plant ...
Fandi Rezian Pratama Gultom, Solimun Solimun, Nurjannah Nurjannah   +2 more
doaj   +1 more source

Extending the hyper‐logistic model to the random setting: New theoretical results with real‐world applications

Mathematical Methods in the Applied Sciences, EarlyView.
We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés, Ana Navarro‐Quiles, Sorina Madalina Sferle   +2 more
wiley   +1 more source

On the Construction of Some Fractional Stochastic Gompertz Models

Mathematics, 2020
The aim of this paper is the construction of stochastic versions for some fractional Gompertz curves. To do this, we first study a class of linear fractional-integral stochastic equations, proving existence and uniqueness of a Gaussian solution.
Giacomo Ascione, Enrica Pirozzi
doaj   +1 more source

The Gamma–Gompertz distribution: Theory and applications

Mathematics and Computers in Simulation, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M.S. Shama, Sanku Dey, Emrah Altun, Ahmed Z. Afify   +3 more
openaire   +5 more sources

On Order Restricted Inference in Multi‐Step Stage Life Testing for a General Family of Distributions

Naval Research Logistics (NRL), EarlyView.
ABSTRACT Recently, k$$ k $$‐step stage life testing (SLT) has been proposed by Laumen and Cramer (2021) as a natural extension of progressive censoring with fixed censoring times (PC‐FCT) as well as of simple step‐stress accelerated life testing (SSALT).
Erhard Cramer, Ayan Pal, Debashis Samanta   +2 more
wiley   +1 more source

Multidimensional characterisation of phenotypic traits in three slow-growing native chicken breeds

Italian Journal of Animal Science
To support the recent consumers’ growing demand for local, alternative, and sustainable products, this study focused on the comprehensive characterisation of three slow-growing chickens from Piedmont (northwest Italy): Bionda Piemontese (BP), Bianca di ...
Eleonora Erika Cappone, Enes Hoş, Edoardo Fiorilla, Laura Ozella, Marta Gariglio, Valeria Zambotto, Riccardo Franco, Valentina Bongiorno, Nadia Stoppani, Dario Sola, Dominga Soglia, Kalliopi Rantsiou, Achille Schiavone   +12 more
doaj   +1 more source

Correction to “Estimation of Maximum Body Size in Fossil Species: A Case Study Using Tyrannosaurus rex” [PDF]

Ecol Evol
Ecology and Evolution, Volume 16, Issue 2, February 2026.
europepmc   +2 more sources

Advancing Sclerotinia risk forecasting for winter rapeseed in Germany: integrating crop phenology and disease development into a decision support system

Pest Management Science, EarlyView.
Integrating crop phenology and sclerotia germination models into SkleroPro improved Sclerotinia risk prediction accuracy from 34% to 66%, optimizing fungicide timing and supporting sustainable winter rapeseed production. Abstract BACKGROUND Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, threatens winter rapeseed (Brassica napus) production ...
Vera Krause, Nazanin Zamani‐Noor, Lena Müller, Hella Kehlenbeck, Anto Raja Dominic   +4 more
wiley   +1 more source

Applications and Sexual Version of a Simple Model for Biological Ageing

, 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, D. Stauffer, De Oliveira, S. Moss   +3 more
core   +2 more sources

Assessing pest control treatments from phenology models and field data

Pest Management Science, Volume 81, Issue 4, Page 1851-1859, April 2025.
Theoretical effect of two larvicide sprays, two delayed larvicide sprays that follow an oil treatment, mating disruption, and mating disruption plus four virus sprays on codling moth larva (brown for treated versus pink for untreated) and adult (dark green for treated versus light green for untreated) phenology.
Diego F. Rincon, Javier Gutierrez‐Illan, David W. Crowder   +2 more
wiley   +1 more source