Results 41 to 50 of about 1,618,423 (189)

A generalized linear mixed model for longitudinal binary data with a marginal logit link function [PDF]

open access: yes, 2011
Longitudinal studies of a binary outcome are common in the health, social, and behavioral sciences. In general, a feature of random effects logistic regression models for longitudinal binary data is that the marginal functional form, when integrated over
Fitzmaurice, Garrett M.   +6 more
core   +3 more sources

Parameter estimation of Stochastic Logistic Model : Levenberg-Marquardt Method [PDF]

open access: yes, 2009
In this paper, we estimate the drift and diffusion parameters of the stochas- tic logisticmodels for the growth of Clostridium Acetobutylicum P262 using Levenberg- Marquardt optimization method of non linear least squares.
Abd. Rahman, Haliza   +5 more
core  

Logit analysis of socio-economic factors influencing people to become fishermen in the central region of Ghana [PDF]

open access: yesJournal of Agricultural Sciences (Belgrade), 2011
This study analyzes the socio-economic factors that influence people’s decision to become fishermen in the central region of Ghana. Using a well structured interview schedule, a random sample of 98 people from Elmina in the central region of Ghana was
Acquah Henry D., Abunyuwah Isaac
doaj   +1 more source

Evaluation and modelling of biogas production from batch anaerobic digestion of corn stover with oxalic acid

open access: yesResearch in Agricultural Engineering, 2023
Corn stover is one of the potential lignocellulosic biomasses as the raw material of biogas production. Pretreatment of lignocellulose substrates can enhance biodegradability and biogas yield.
Shitophyta Lukhi Mulia   +2 more
doaj   +1 more source

A logistic regression model for microalbuminuria prediction in overweight male population [PDF]

open access: yes, 2010
Background: Obesity promotes progression to microalbuminuria and increases the risk of chronic kidney disease. Current protocols of screening microalbuminuria are not recommended for the overweight or obese. Design and Methods: A cross-
BaoDe Chen   +5 more
core   +1 more source

Mobile phone and beef cattle marketing: The case of Girar Jarso district of Oromia region, Ethiopia

open access: yesCogent Food & Agriculture, 2021
Mobile phone serves as a means for the farmers to have access to beef cattle markets. This study is designed to assess the contributions, determinants, and constraints in the use of the mobile phone for beef cattle marketing.
Yohannes Girma, Adi Kelil
doaj   +1 more source

Analysis and Modeling for China’s Electricity Demand Forecasting Based on a New Mathematical Hybrid Method

open access: yesInformation, 2017
Electricity demand forecasting can provide the scientific basis for the country to formulate the power industry development strategy and the power-generating target, which further promotes the sustainable, healthy and rapid development of the national ...
Jie Liang, Yi Liang
doaj   +1 more source

A descriptive and validation study of a predictive model of severity of SARS-COV-2 infection

open access: yesAdvances in Laboratory Medicine, 2021
The strain the SARS-COV-2 pandemic is putting on hospitals requires that predictive values are identified for a rapid triage and management of patients at a higher risk of developing severe COVID-19. We developed and validated a prognostic model of COVID-
Villena-Ortiz Yolanda   +8 more
doaj   +1 more source

Estimation of the parameters of a stochastic logistic growth model [PDF]

open access: yes, 2013
We consider a stochastic logistic growth model involving both birth and death rates in the drift and diffusion coefficients for which extinction eventually occurs almost surely.
Campillo, Fabien   +2 more
core   +2 more sources

Mathematical modeling and through artificial neural networks of the Spirulina sp. growth in a photobioreactor with fluorescent light source and solid state lighting

open access: yesScientia Agropecuaria, 2013
The Gompertz and logistic mathematical models in the Spirulina sp. growth kinetics were evaluated and were compared with a modeling through Backpropagation Artificial Neural Networks (BP- ANN).
Víctor Vásquez-Villalobos   +3 more
doaj   +1 more source

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