Study on segmented distribution for reliability evaluation
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2016.12.008
Abstract: Abstract In practice, the failure rate of most equipment exhibits different tendencies at different stages and even its failure rate curve behaves a multimodal trace during its life cycle. As a result, traditionally evaluating the… read more here.
Keywords: reliability; segmented distribution; failure rate;
Unexpected high failure rate of a specific MicroPort/LivaNova/Sorin pacing lead.
Sign Up to like & getrecommendations! Published in 2020 at "Heart rhythm"
DOI: 10.1016/j.hrthm.2020.08.010
Abstract: BACKGROUND Pacing leads are the Achilles heel of pacemakers. Most manufacturers report a 3-year survival rate of >99% of their leads. We observed several failures of the Beflex™/Vega™ leads (MicroPort, formerly Sorin/LivaNova). OBJECTIVE To investigate… read more here.
Keywords: capsurefix novus; lead; failure; beflex vega ... See more keywords
Estimating the quarantine failure rate for COVID-19
Sign Up to like & getrecommendations! Published in 2021 at "Infectious Disease Modelling"
DOI: 10.1016/j.idm.2021.07.002
Abstract: Quarantine is a crucial control measure in reducing imported COVID-19 cases and community transmissions. However, some quarantined COVID-19 patients may show symptoms after finishing quarantine due to a long median incubation period, potentially causing community… read more here.
Keywords: day quarantine; period; rate; quarantine failure ... See more keywords
Application and analysis of methods for the evaluation of failure rate distribution parameters for avionics components
Sign Up to like & getrecommendations! Published in 2019 at "Measurement"
DOI: 10.1016/j.measurement.2019.02.082
Abstract: Abstract The paper provides an overview of the principal failure rate distributions and it is focused on the comparison between exponential and Weibull distributions: this study illustrates the advantages and disadvantages of the constant failure… read more here.
Keywords: avionics; failure rate; avionics components; failure ... See more keywords
Modeling and detecting approach for the change point of electronic product infant failure rate
Sign Up to like & getrecommendations! Published in 2019 at "Microelectronics Reliability"
DOI: 10.1016/j.microrel.2019.06.031
Abstract: Abstract Infant failures are the natural enemy of customer satisfaction of electronic product. The change point is a precondition to optimize the burn-in time, warranty period, and root causes in production reliability assurance. However, the… read more here.
Keywords: failure rate; change; change point; infant failure ... See more keywords
Failure rate properties of parallel systems
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Applied Probability"
DOI: 10.1017/apr.2020.6
Abstract: Abstract We study failure rate monotonicity and generalised convex transform stochastic ordering properties of random variables, with an emphasis on applications. We are especially interested in the effect of a tail-weight iteration procedure to define… read more here.
Keywords: parallel systems; properties parallel; rate properties; failure rate ... See more keywords
Log-concavity and other concepts of bivariate increasing failure rate distributions
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Probability"
DOI: 10.1017/jpr.2021.54
Abstract: Abstract Log-concavity of a joint survival function is proposed as a model for bivariate increasing failure rate (BIFR) distributions. Its connections with or distinctness from other notions of BIFR are discussed. A necessary and sufficient… read more here.
Keywords: failure rate; increasing failure; bivariate increasing; log concavity ... See more keywords
On some properties of distributions possessing a bathtub-shaped failure rate average
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Applied Probability"
DOI: 10.1017/jpr.2022.87
Abstract: Abstract The life distribution of a device subject to shocks governed by a homogeneous Poisson process is shown to have a bathtub failure rate average (BFRA) when the probabilities $\bar{P}_k$ of surviving k shocks possess… read more here.
Keywords: rate average; properties distributions; failure rate; failure ... See more keywords
ITERATED FAILURE RATE MONOTONICITY AND ORDERING RELATIONS WITHIN GAMMA AND WEIBULL DISTRIBUTIONS
Sign Up to like & getrecommendations! Published in 2018 at "Probability in the Engineering and Informational Sciences"
DOI: 10.1017/s0269964817000481
Abstract: Stochastic ordering of random variables may be defined by the relative convexity of the tail functions. This has been extended to higher order stochastic orderings, by iteratively reassigning tail-weights. The actual verification of stochastic orderings… read more here.
Keywords: relations within; iterated failure; gamma weibull; weibull distributions ... See more keywords
Reconstruction with Unconventional Endoprostheses after Resection of Primary Distal Femoral Bone Tumors: Implant Survival and Functional Outcomes
Sign Up to like & getrecommendations! Published in 2022 at "Revista Brasileira de Ortopedia"
DOI: 10.1055/s-0042-1748966
Abstract: Objective To evaluate the survival time, the failure rate and its causes, and the functional results of cemented endoprostheses, with a polyethylene body, used after resection of primary bone tumors of the distal femur. Methods… read more here.
Keywords: resection primary; survival; bone; failure ... See more keywords
Improving the bridge structure by using linear failure rate distribution
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Statistics"
DOI: 10.1080/02664763.2019.1679098
Abstract: In this paper, a system of five components is studied; one of these components is a bridge network component. Each of these components has a non-constant failure rate. The system components have linear failure rate… read more here.
Keywords: bridge structure; linear failure; system; failure rate ... See more keywords