Results 141 to 150 of about 14,783,684 (194)

Weibull model selection for reliability modelling

Reliability Engineering & System Safety, 2004
A large number of models have been derived from the two-parameter Weibull distribution and are referred to as Weibull models. They exhibit a wide range of shapes for the density and hazard functions, which makes them suitable for modelling complex failure data sets.
Murthy, D. N. P.   +2 more
openaire   +7 more sources

A modified Weibull model for bacterial inactivation

International Journal of Food Microbiology, 2005
In this paper, a modified Weibull model is proposed to fit microbial survival curves. This model can incorporate shoulder and/or tailing phenomena if they are encountered. We aim to obtain an accurate fit of the "primary" modelling of the bacterial inactivation and to provide a useful and meaningful model for biologists and food industry.
Albert, I, Mafart, P
openaire   +5 more sources

Weibull and inverse Weibull mixture models allowing negative weights

Reliability Engineering & System Safety, 1999
Abstract This article presents the finding that when components of a system follow the Weibull or inverse Weibull distribution with a common shape parameter, then the system can be represented by a Weibull or inverse Weibull mixture model allowing negative weights.
R. Jiang, M.J. Zuo, H.-X. Li
openaire   +3 more sources

Fitting irregular diameter distributions of forest stands by Weibull, modified Weibull, and mixture Weibull models

Journal of Forest Research, 2006
Irregular diameter frequency distributions of forest stands include multimodal structure of mixed-species stands, highly skewed and highly irregular shapes of uneven-aged stands, and rotated sigmoid form of old-growth stands. In this study, a traditional two-parameter Weibull model, a modified two-parameter Weibull model, and a finite mixture of two ...
Lianjun Zhang, Chuangmin Liu
openaire   +3 more sources

Inference for the Poly-Weibull Model

Journal of the Royal Statistical Society: Series D (The Statistician), 2000
Summary. We consider inference for the poly-Weibull model, which arises in competing risk scenarios when the risks have independent Weibull distributions and it is not known which is responsible for the failure. Real and generated data sets illustrate our approaches to inference, which in addition to standard likelihood methods include Bayesian ...
Davison, A. C., Louzada-Neto, F.
openaire   +1 more source

Weibull and inverse Weibull composite distribution for modeling reliability data

Model Assisted Statistics and Applications, 2010
The Weibull distribution, frequently used for life data analysis, is composited with inverse Weibull distribution to obtain a computationally convenient parametric distribution for modeling reliability data. This two-parameter smooth and continuous natural composition has an inverse Weibull density up to an unknown threshold value and Weibull density ...
Kahadawala Cooray   +2 more
openaire   +1 more source

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