Results 41 to 50 of about 519,139 (282)

Comparison of Different Underlying Distributions in The Accelerated Failure Time (AFT) Model on Mortality of Covid-19 Patients

InPrime, 2022
In 2022, the COVID-19 virus is still making headlines in various mass media because it is a virus that is very dangerous to health. The world health organization, WHO, explained that the virus caused a global pandemic that infected the whole world.
Asti Meiza, Asep Solih Awaluddin, Nurapni Oktapia Hidayah, Adnan Taha   +3 more
doaj   +1 more source

Semiparametric Multivariate Accelerated Failure Time Model with Generalized Estimating Equations

, 2012
The semiparametric accelerated failure time model is not as widely used as the Cox relative risk model mainly due to computational difficulties. Recent developments in least squares estimation and induced smoothing estimating equations provide promising ...
A Komárek, A Qu, AA Tsiatis, BM Brown, BM Brown, CF Spiekerman, D Zeng, DR Cox, EA Gehan, EW Lee, H Li, J Buckley, J Yan, JM Robins, Jun Yan, Junghi Kim, K-Y Liang, K-Y Liang, L Yu, L Yu, LM Johnson, M Zhou, M-C Wang, P Novák, RL Prentice, RL Strawderman, Sangwook Kang, Sy Han Chiou, TL Lai, U Halekoh, W Stute, W Stute, WJ Huster, X Luo, Y Huang, Y Ritov, Y-G Wang, Z Jin, Z Jin, Z Jin, Z Ying   +40 more
core   +1 more source

A Group MCP Approach for Structure Identification in Non-Parametric Accelerated Failure Time Additive Regression Model

Mathematics, 2023
In biomedical research, identifying genes associated with diseases is of paramount importance. However, only a small fraction of genes are related to specific diseases among the multitude of genes.
Sumin Hou, Hao Lv
doaj   +1 more source

Accelerated Failure Time Models with Logconcave Errors

SSRN Electronic Journal, 2019
Summary We study accelerated failure time models in which the survivor function of the additive error term is log-concave. The log-concavity assumption covers large families of commonly used distributions and also represents the aging or wear-out phenomenon of the baseline duration.
Ruixuan Liu, Zhengfei Yu
openaire   +1 more source

Model Averaging for Accelerated Failure Time Models with Missing Censoring Indicators

Mathematics
Model averaging has become a crucial statistical methodology, especially in situations where numerous models vie to elucidate a phenomenon. Over the past two decades, there has been substantial advancement in the theory of model averaging. However, a gap
Longbiao Liao, Jinghao Liu
doaj   +1 more source

Alkaline Water and Longevity: A Murine Study [PDF]

, 2016
The biological effect of alkaline water consumption is object of controversy. The present paper presents a 3-year survival study on a population of 150 mice, and the data were analyzed with accelerated failure time (AFT) model.
Baratella, Davide, Bonaiuto, Emanuela, Corain, Livio, Corraducci, Vittorino, Ferro, Silvia, Magro, Massimiliano, Salmaso, Luigi, Terzo, Milo, Vianello, Fabio   +8 more
core   +3 more sources

Reliable Method to Detect Alloy Soldering Fractures under Accelerated Life Test

Applied Sciences, 2019
In this research, we investigated the development and design of the Accelerated Life Test (ALT) and its approach to the waste of material. The development of a reliability model is based on the moment at which failure appears.
M.A. Zamora-Antuñano, O. Mendoza-Herbert, M. Culebro-Pérez, A. Rodríguez-Morales, Juvenal Rodríguez-Reséndiz, J.E.E. Gonzalez-Duran, N. Mendez-Lozano, C.A. Gonzalez-Gutierrez   +7 more
doaj   +1 more source

Creep rupture of materials: insights from a fiber bundle model with relaxation

, 2010
I adapted a model recently introduced in the context of seismic phenomena, to study creep rupture of materials. It consists of linear elastic fibers that interact in an equal load sharing scheme, complemented with a local viscoelastic relaxation ...
E. A. Jagla, H. Kawamura, K. Yamaguchi
core   +1 more source

Evaluation of the reliability of commercial concentrator triple-junction solar cells by means of accelerated life tests (ALT) [PDF]

, 2013
A temperature accelerated life test on commercial concentrator lattice-matched GaInP/GaInAs/Ge triple-junction solar cells has been carried out. The solar cells have been tested at three different temperatures: 119, 126 and 164 °C and the nominal photo ...
Algora del Valle, Carlos, Araki, Kenji, Bautista Villares, Jesus, Espinet González, Pilar, Nuñez Mendoza, Neftali, Orlando Carrillo, Vincenzo, Vázquez López, Manuel   +6 more
core   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source