Results 31 to 40 of about 4,296,565 (215)

A novel method for occupational safety risk analysis of high-altitude fall accident in architecture construction engineering

open access: yesJournal of Asian Architecture and Building Engineering, 2021
The occupational safety risk of high-altitude fall accident in architecture construction engineering is dynamically changeable. Considering these dynamic changes, how to make a qualitative and quantitative analysis of the changing trends of the ...
Xiao-Ping Bai, Yu-Hong Zhao
doaj   +1 more source

Advancing Dynamic Fault Tree Analysis

open access: yesCoRR, 2016
This paper presents a new state space generation approach for dynamic fault trees (DFTs) together with a technique to synthesise failures rates in DFTs. Our state space generation technique aggressively exploits the DFT structure --- detecting symmetries, spurious non-determinism, and don't cares.
Matthias Volk 0001   +2 more
openaire   +2 more sources

Application of the dynamic FMEA in the reliability analysis of DCS [PDF]

open access: yesE3S Web of Conferences, 2020
Digital distributed instrumentation and control system (DCS) is critical to the safety of nuclear power plants (NPPs). Static analysis methods developed from analog control system are not applicable to DCS due to its enhanced dynamic interactions and ...
Yankai Li, Xu Wang, Meng Lin
doaj   +1 more source

A Modular Approach to Non-deterministic Dynamic Fault Trees [PDF]

open access: yes, 2021
Dynamic Fault Trees (DFTs) are powerful tools for deriving fault-tolerant system designs. However, deterministic approaches to DFTs suffer from semantic struggles with problems such as spare races. In this paper, we discuss the added complexity in the state-space representation of a non-deterministic DFT model and propose a modularized approach for ...
Müller, Sascha   +3 more
openaire   +1 more source

A PCA-LSTM-Based Method for Fault Diagnosis and Data Recovery of Dry-Type Transformer Temperature Monitoring Sensor

open access: yesApplied Sciences, 2022
The failure that occurs during the dry-type transformer temperature monitoring sensor working will result in wrong data output, which may cause the monitor and monitoring background to respond incorrectly.
Mingze Zheng   +3 more
doaj   +1 more source

Fault estimation and fault-tolerant control for discrete-time dynamic systems [PDF]

open access: yes, 2015
In this paper, a novel discrete-time estimator is proposed, which is employed for simultaneous estimation of system states, and actuator/sensor faults in a discrete-time dynamic system.
Gao, Zhiwei
core   +1 more source

Improvement of the Reliability Graph with General Gates to Analyze the Reliability of Dynamic Systems That Have Various Operation Modes

open access: yesNuclear Engineering and Technology, 2016
The safety of nuclear power plants is analyzed by a probabilistic risk assessment, and the fault tree analysis is the most widely used method for a risk assessment with the event tree analysis.
Seung Ki Shin   +2 more
doaj   +1 more source

Algebraic determination of the structure function of Dynamic Fault Trees [PDF]

open access: yesReliability Engineering & System Safety, 2011
This paper presents an algebraic framework allowing to algebraically model dynamic gates and determine the structure function of any Dynamic Fault Tree (DFT). This structure function can then be exploited to perform both the qualitative and quantitative analysis of DFTs directly, even though this latter aspect is not detailed in this paper.
Guillaume Merle   +2 more
openaire   +3 more sources

Data-driven approach to machine condition prognosis using least square regression trees [PDF]

open access: yes, 2007
Machine fault prognosis techniques have been considered profoundly in the recent time due to their profit for reducing unexpected faults or unscheduled maintenance.
Tran, Van Tung
core   +3 more sources

Modelling and Resolution of Dynamic Reliability Problems by the Coupling of Simulink and the Stochastic Hybrid Fault Tree Object Oriented (SHyFTOO) Library

open access: yesInformation, 2019
Dependability assessment is one of the most important activities for the analysis of complex systems. Classical analysis techniques of safety, risk, and dependability, like Fault Tree Analysis or Reliability Block Diagrams, are easy to implement, but ...
Ferdinando Chiacchio   +4 more
doaj   +1 more source

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