Results 91 to 100 of about 105,471 (295)

A Bi-Level Weibull Model with Applications to Two Ordered Events

International Journal of Prognostics and Health Management, 2017
In this paper, we propose and study a new bivariate Weibull model, called Bi-levelWeibullModel, which arises when one failure occurs after the other. Under some specific regularity conditions, the reliability function of the second event can be above the
Shuguang Song, Hanlin Liu, Mimi Zhang, Min Xie   +3 more
doaj   +1 more source

Post‐Processed CMIP6 Climate Projections for Hydro‐Environmental Risk Assessment in the Middle East and Central Asia

International Journal of Climatology, EarlyView.
Estimating water resources is important for regional climate impact analysis and risk estimation. The Middle East and Central Asia have largely reached the limit of sustainably usable water across their river basins and ecosystems. Strategies designed to mitigate environmental risks require a reliable estimation of water availability trends.
Paolo Reggiani, Amal Talbi, Oleksiy Boyko, Poolad Karimi, Ezio Todini   +4 more
wiley   +1 more source

Comparison of Generalized Weibull and Weibull Parametric Models in Survival Analysis of Patients with Hypertension to Acute Renal Failure: Death due to Cardiovascular Disease as a Competing Risk

Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2020
Background and Objectives: Hypertension is one of the most prevalent diseases affecting numerous people in different societies. One of the major complications of hypertension is the occurrence of acute renal failure.
Amir Hossein Hashemian, Leila Solouki, Mansour Rezaei, Armin Attar   +3 more
doaj  

Efficient experimental designs for sigmoidal growth models [PDF]

For the Weibull- and Richards-regression model robust designs are determined by maximizing a minimum of D- or D1-efficiencies, taken over a certain range of the non-linear parameters.
Dette, Holger, Pepelyshev, Andrey
core  

New Flexible Regression Models Generated by Gamma Random Variables with Censored Data [PDF]

, 2016
We propose and study a new log-gamma Weibull regression model. We obtain explicit expressions for the raw and incomplete moments, quantile and generating functions and mean deviations of the log-gamma Weibull distribution.
Cordeiro, Gauss M., Hamedani, Gholamhossein G., Hashimoto, Elizabeth M., Ortega, Edwin M. M.   +3 more
core   +1 more source

Risk estimation for LCF crack initiation

, 2013
An accurate risk assessment for fatigue damage is of vital importance for the design and service of today's turbomachinery components. We present an approach for quantifying the probability of crack initiation due to surface driven low-cycle fatigue (LCF)
Gottschalk, Hanno, Krause, Rolf, Rollmann, Georg, Schmitz, Sebastian   +3 more
core   +1 more source

Spatiotemporal Changes in Precipitation Concentration in the Atlantic‐European Region

International Journal of Climatology, EarlyView.
This study analyses changes in precipitation concentration using ERA5 and E‐OBS datasets. Gini index as a measure of precipitation concentration revealed a gradual expansion of areas with increasing unevenness in precipitation distribution across the Atlantic‐European region since 1961.
Petr Dobrovolný, David Tichopád, Rudolf Brázdil, Jan Řehoř, Jiří Mikšovský   +4 more
wiley   +1 more source

Generalization of Log-Logistic Family with Quantile Regression Model

Mathematical and Computational Applications
A new general class of distributions is proposed by applying the transformation to the random variable that follows the generalized odd-logistic family. Using the proposed family, we introduce a flexible Weibull distribution.
Fazlollah Lak, Emrah Altun, Morad Alizadeh, Javier E. Contreras-Reyes, Hamid Esmaeili   +4 more
doaj   +1 more source

Effects of Na2Cr2O7 Inhibitor on the Corrosion Potential Response of Steel Reinforced Concrete in Saline Medium [PDF]

, 2012
Electrochemical monitoring method of the open circuit potential was used to investigate the effect of the concentrations of Na2Cr2O7 on the corrosion potential response of steel reinforced concrete in sodium chloride medium.
Ambrose, I.O, Loto, C. A., Okeniyi, J. O., Okpala, S.O., Oladele, I.O., Omoniyi, O.M., Popoola, A. P. I.   +6 more
core   +1 more source

Essential and toxic elements intake from botanical extracts: a probabilistic risk–benefit evaluation within the Italian dietary context

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Botanical extracts are widely consumed for their claimed health benefits, yet their safety profile with respect to chronic consumption remains poorly characterized. Understanding the potential health risks associated with their inorganic content is a crucial issue for ensuring safe use, along with a characterization of the ...
Giovanni Tommaso Lanza, Maria Olga Varrà, Lenka Husáková, Martina Piroutková, Jan Patočka, Emanuela Zanardi   +5 more
wiley   +1 more source