Results 111 to 120 of about 28,074 (208)

Acute and Chronic Toxicity of Sediments Containing Platinum and Palladium on Freshwater Benthic Organisms Chironomus riparius and Hyalella azteca

open access: yesJournal of Applied Toxicology, Volume 46, Issue 4, Page 1151-1163, April 2026.
ABSTRACT The expanding demand for platinum group elements (PGEs) in industrial and medical applications has led to their increasing accumulation in aquatic sediments. However, their ecological impacts remain poorly understood, particularly for sediment‐dwelling invertebrates. This study assessed the toxicity of platinum (Pt) and palladium (Pd) across a
Alice Carle   +3 more
wiley   +1 more source

Multivariate Tests for Comparing Lifetimes of Parallel Systems

open access: yesQuality and Reliability Engineering International, Volume 42, Issue 3, Page 1159-1171, April 2026.
ABSTRACT Life testing of engineering systems with dependent components requires robust multivariate methods. Parametric approaches depend on restrictive assumptions, limiting their use in complex or unknown lifetime distribution settings. This study evaluates nonparametric methods for comparing parallel system lifetimes under minimal sample ...
Niladri Chakraborty   +2 more
wiley   +1 more source

A Dependent Bivariate Burr XII Inverse Weibull Model: Application to Diabetic Retinopathy and Dependent Competing Risks Data

open access: yesMathematics
This paper introduces a novel bivariate distribution, referred to as the Bivariate Burr XII Inverse Weibull (BBXII-IW) distribution, constructed via the Marshall–Olkin approach from the univariate Burr XII Inverse Weibull (BXII-IW) distribution.
Ammar M. Sarhan   +3 more
doaj   +1 more source

Optimal Accelerated Life Testing Design Under Constrained Resources Using Double Deep Q‐Learning

open access: yesQuality and Reliability Engineering International, Volume 42, Issue 3, Page 980-991, April 2026.
ABSTRACT Accelerated life tests (ALTs) are essential tools for estimating product reliability under high‐stress conditions, allowing failure data to be collected in reduced timeframes. However, planning effective ALT configurations is a complex task that requires selecting stress levels, test durations, and unit allocations while accounting for limited
Allan Jonathan da Silva   +3 more
wiley   +1 more source

Estimation in Inverse Weibull Distribution Based on Randomly Censored Data

open access: yesStatistica, 2019
This article deals with the estimation of the parameters and reliability characteristics in inverse Weibull (IW) distribution based on the random censoring model. The censoring distribution is also taken as an IW distribution.
Kapil Kumar, Indrajeet Kumar
doaj   +1 more source

Stochastic Modelling of Daily Precipitation in Semi‐Arid Regions Using Markov Chains and Parametric Distributions

open access: yesInternational Journal of Climatology, Volume 46, Issue 4, 30 March 2026.
This study applies stochastic rainfall models combining Markov Chains with gamma and mixed exponential distributions to a semi‐arid climate in Northeast Brazil. Model structures were evaluated using Bayesian Information Criterion (BIC), with maximum likelihood (MLM) for parameter estimation and cumulative distribution functions (CDFs) for validation ...
Gabriel Magno Cavalcante Calado   +5 more
wiley   +1 more source

Kernel Inference on the Inverse Weibull Distribution [PDF]

open access: yesCommunications for Statistical Applications and Methods, 2006
In this paper, the Inverse Weibull distribution parameters have been estimated using a new estimation technique based on the non-parametric kernel density function that introduced as an alternative and reliable technique for estimation in life testing models.
openaire   +1 more source

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