Results 31 to 40 of about 2,383,589 (344)

Fractional Growth Model with Delay for Recurrent Outbreaks Applied to COVID-19 Data

open access: yesMathematics, 2022
There are a great many epidemiological models that have been implemented to describe COVID-19 data; however, few attempted to reproduce the entire phenomenon due to the complexity of modeling recurrent outbreaks.
Fernando Alcántara-López   +4 more
doaj   +1 more source

A Ballooned Beta-Logistic Model [PDF]

open access: yesStatistics in Biopharmaceutical Research, 2017
The beta distribution is a simple and flexible model in which responses are naturally confined to the finite interval (0,1). Its parameters can be related to covariates such as dose and gender through a regression model. The ballooned beta-logistic (BBL) model expands the response boundaries from (0,1) to (L,U), where L and U are unknown parameters ...
Yi, Min, Flournoy, Nancy, Kpamegan, Eloi
openaire   +2 more sources

High-dimensional Ising model selection using ${\ell_1}$-regularized logistic regression [PDF]

open access: yes, 2010
We consider the problem of estimating the graph associated with a binary Ising Markov random field. We describe a method based on $\ell_1$-regularized logistic regression, in which the neighborhood of any given node is estimated by performing logistic ...
Lafferty, John D.   +2 more
core   +3 more sources

Association testing to detect gene-gene interactions on sex chromosomes in trio data

open access: yesFrontiers in Genetics, 2013
Autism Spectrum Disorder (ASD) occurs more often among males than females in a 4:1 ratio. Among theories used to explain the causes of ASD, the X chromosome and the Y chromosome theories attribute ASD to X-linked mutation and the male-limited gene ...
Yeonok eLee, Debashis eGhosh, Yu eZhang
doaj   +1 more source

Analysis coronavirus disease (COVID-19) model using numerical approaches and logistic model

open access: yesAIMS Bioengineering, 2020
The coronavirus disease (COVID-19) is a global health care problem that international efforts have been suggested and discussed to control this disease.
Ayub Ahmed   +4 more
doaj   +1 more source

Quantitative Research on the Evolution Stages of We-media Network Public Opinion based on a Logistic Equation

open access: yesTehnički Vjesnik, 2021
We-media network public opinion is a new force in the current social public opinion field that has an important impact on the guidance of social public opinion and social stability.
Zhou Huizi*, Li Xuewei
doaj   +1 more source

The use of the nonlinear models in the growth of pears of ‘Shinseiki’ cultivar

open access: yesCiência Rural, 2017
: The goal of this study was to elucidate the growth and development of the Asian pear fruit, on the grounds of length, diameter and fresh weight determined over time, using the non-linear Gompertz and Logistic models.
Thais Destefani Ribeiro   +3 more
doaj   +1 more source

Farmers’ and Herdsmen’ Sustainable Livelihood Capital and Livelihood Strategy in Enclosed Reserves of Desertified Land

open access: yesShuitu baochi tongbao, 2023
[Objective] The relationship between farming and herding households’ livelihood capital and livelihood strategies was studied, and the spatial differences of farming and herding households’ livelihood capital and the transformation between livelihood ...
Zhang Yishan, Luo Yongzhong, Gui Jie
doaj   +1 more source

Efficiency & sustainability model to design and manage two-stage logistic networks [PDF]

open access: yes, 2017
The distribution and storage efficiency together with the environmental sustainability are mandatory targets to consider when designing and managing modern supply chain (SC) networks.
Bortolini, Marco   +2 more
core   +1 more source

Determining the Boundary and Probability of Surface Urban Heat Island Footprint Based on a Logistic Model

open access: yesRemote Sensing, 2019
Studies of the spatial extent of surface urban heat island (SUHI or UHISurf) effects require precise determination of the footprint (FP) boundary. Currently available methods overestimate or underestimate the SUHI FP boundary, and can even alter its ...
Zhi Qiao   +7 more
doaj   +1 more source

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