Results 41 to 50 of about 9,698 (163)

The Log-Expo Inverse Gompertz Distribution: properties and Estimations [PDF]

open access: yesMaǧallaẗ Al-Buḥūṯ Al-Mālīyyaẗ wa Al-Tiğāriyyaẗ
This paper introduces the Log-Expo Inverse Gompertz Distribution (LET-IG) three-parameter distribution and examines some of its mathematical properties. The study derives the density distribution, reliability function, and hazard rate function.
محمد عبد القادر   +1 more
doaj   +1 more source

parfm : Parametric Frailty Models in R

open access: yesJournal of Statistical Software, 2012
Frailty models are getting more and more popular to account for overdispersion and/or clustering in survival data. When the form of the baseline hazard is somehow known in advance, the parametric estimation approach can be used advantageously ...
Marco Munda   +2 more
doaj  

Manifestaciones clínicas y endoscópicas en enfermedad inflamatoria intestinal

open access: yesRevista Médica Clínica Las Condes, 2019
Resumen: La Colitis Ulcerosa y la Enfermedad de Crohn, son enfermedades crónicas, inmunomediadas, que afectan al tubo digestivo, alternando períodos de inactividad con períodos de crisis durante los cuales el paciente presenta manifestaciones clínicas ...
Macarena Gompertz, Rocío Sedano
doaj   +1 more source

Analisis parameter pertumbuhan itik Magelang generasi ketiga di Balai Pembibitan Ternak Non Ruminansia Satuan Kerja itik Banyubiru

open access: yesJurnal Ilmu-Ilmu Peternakan, 2017
The aim of this research was to determine growth curve models of the third generation Magelang ducks using Gompertz and Logistic Growth Model. Individual body weight was obtained by weighing at every three days from 0 to 60 days.Growth parameters were ...
Elisabeth Nadia Yusinta   +2 more
doaj   +1 more source

Bootstrap Resampling in Gompertz Growth Model with Levenberg–Marquardt Iteration

open access: yesJTAM (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   +2 more
doaj   +1 more source

The Gamma–Gompertz distribution: Theory and applications

open access: yesMathematics and Computers in Simulation, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M.S. Shama   +3 more
openaire   +5 more sources

On the Construction of Some Fractional Stochastic Gompertz Models

open access: yesMathematics, 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

PENGARUH PENGGUNAAN HUKUM MORTALITAS GOMPERTZ PADA PENENTUAN BESARNYA ASURANSI JIWA DWIGUNA DENGAN METODE FULL PRELIMINARY TERM

open access: yesJurnal Matematika UNAND, 2019
Asuransi jiwa merupakan suatu produk yang berguna untuk mengurangi risiko yang datang secara tiba-tiba di masa mendatang. Asuransi jiwa dwiguna adalah salah satu jenis asuransi jiwa yang memberikan dua manfaat sekaligus yaitu memberikan uang ...
Kiki Ramadani   +2 more
doaj   +1 more source

Properties of Gompertz data revealed with non-Gompertz integrable difference equation

open access: yesCogent Mathematics & Statistics, 2019
AbstractBehaviour of the upper limit estimated by an unsuitable model (the logistic curve model) was mathematically analysed for data on an exact solution of the Gompertz curve model with integrabl...
openaire   +1 more source

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

open access: yesItalian 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   +12 more
doaj   +1 more source

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