Results 21 to 30 of about 733,404 (291)

Optimal maintenance policies under different operational schedules [PDF]

open access: yes, 2005
In the reliability literature, maintenance time is usually ignored during the optimization of maintenance policies. In some scenarios, costs due to system failures may vary with time, and the ignorance of maintenance time will lead to unrealistic results.
Clements-Croome, Derek   +3 more
core   +1 more source

Parameter estimation for a model with both imperfect test and repair [PDF]

open access: yes, 2007
peer-reviewedWe describe estimation of the parameters of a manufacturing test and repair model using data available from that test. The model allows imperfect testing and imperfect repair.
WILSON, SIMON PAUL
core   +2 more sources

An Inventory Model for Imperfect Quality Products with Rework, Distinct Holding Costs, and Nonlinear Demand Dependent on Price

open access: yesMathematics, 2021
Traditionally, the inventory models available in the literature assume that all articles in the purchased lot are perfect and the demand is constant. However, there are many causes that provoke the presence of defective goods and the demand is dependent ...
Leopoldo Eduardo Cárdenas-Barrón   +4 more
doaj   +1 more source

On the Maintenance Modeling of a Hybrid Model with Exponential Repair Efficiency [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
In the reliability literature, maintenance efficiency is usually dealt with as a fixed value. Since repairable systems are subject to different degrees and types of repair, it is more convenient to regard a random variable for maintenance efficiency ...
Wassila Nissas , Soufiane Gasmi
doaj   +1 more source

Fault Tree Analysis for Reliability Analysis of Wind Turbines Considering the Imperfect Repair Effect [PDF]

open access: yes, 2023
Wind turbines are complex and expensive equipment, requiring high reliability and low maintenance costs. However, most of the existing fault tree analysis (FTA) methods for reliability analysis of wind turbines assume that the repair of wind turbines can
Rana, Zuraiz   +7 more
core   +1 more source

An Optimal Imperfect Maintenance Policy for a Partially Observed System With Obvious Failures and Limited Repairs

open access: yesIEEE Access, 2019
In this paper, we investigate an imperfect maintenance optimization problem for a multi-state, Markovian deterioration system with obvious failures under repair restriction based on those non-periodically collected sensor information.
Hongdong Fan   +3 more
doaj   +1 more source

Hell Hath No Fury: The Place of Revenge in Moral Repair

open access: yesPassion, 2023
Revenge is a powerful word. It can conjure up the scheming, embittered individual, plotting the downfall of his enemies well beyond reason and morality – or, more seriously, tragic cycles of violence and blood vendettas, spiraling into entrenched civil ...
Alice MacLachlan
doaj   +1 more source

A testing-coverage software reliability model considering fault removal efficiency and error generation. [PDF]

open access: yesPLoS ONE, 2017
In this paper, we propose a software reliability model that considers not only error generation but also fault removal efficiency combined with testing coverage information based on a nonhomogeneous Poisson process (NHPP).
Qiuying Li, Hoang Pham
doaj   +1 more source

Availability of Parallel Triplicated Redundancy Models With Imperfect Switchovers and Interrupted Repairs

open access: yesIEEE Access, 2018
This paper presents the analysis of the three parallel triplicated redundancy models: model with one active and two standby components, model with one standby and two active components, and model with three active components.
Yutae Lee
doaj   +1 more source

Exploration of the causes of cerebrospinal fluid leakage after endoscopic endonasal surgery for sellar and suprasellar lesions and analysis of risk factors

open access: yesFrontiers in Surgery, 2022
ObjectivePostoperative cerebrospinal fluid (CSF) leakage following endoscopic endonasal surgery (EES) is a frequent complication. This study aims to identify potential risk factors of postoperative CSF leakage.MethodsA retrospective review of 360 ...
Yicheng Xiong   +8 more
doaj   +1 more source

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