Results 51 to 60 of about 215,150 (354)

Fault tree analysis of large-scale blackout accidents [PDF]

open access: yesE3S Web of Conferences, 2019
Fault tree analysis method is used to analyze the large-scale blackout accidents. Minimum cut sets and minimum path sets of large-scale blackout accidents are calculated, and the structural importance degree of the accidents is analyzed according to the ...
Fu Dong   +5 more
doaj   +1 more source

Prime implicants for modularised non-coherent fault trees using binary decision diagrams [PDF]

open access: yes, 2007
This paper presents an extended strategy for the analysis of complex fault trees. The method utilises simplification rules, which are applied to the fault tree to reduce it to a series of smaller subtrees, whose solution is equivalent to the original ...
Andrews, John, Remenyte-Prescott, Rasa
core   +2 more sources

Decision Tree Method for Fault Causes Classification Based on RMS-DWT Analysis in 275 kV Transmission Lines Network

open access: yesApplied Sciences, 2021
This paper presents a statistical algorithm for classification of fault causes on power transmission lines. The proposed algorithm is based upon the root mean square (RMS) current duration, voltage dip, and discrete wavelet transform (DWT) measured at ...
Saidatul Habsah Asman   +3 more
doaj   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Qualitative analysis of complex modularized fault trees using binary decision diagrams [PDF]

open access: yes, 2006
Fault tree analysis is commonly used in the reliability assessment of industrial systems. When complex systems are studied conventional methods can become computationally intensive and require the use of approximations.
Andrews, John, Remenyte-Prescott, Rasa
core   +3 more sources

An efficient real-time method of analysis for non-coherent fault trees [PDF]

open access: yes, 2008
Fault tree analysis is commonly used to assess the reliability of potentially hazardous industrial systems. The type of logic is usually restricted to AND and OR gates which makes the fault tree structure coherent.
Andrews, John, Remenyte-Prescott, Rasa
core   +4 more sources

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Software fault tree analysis tool user's manual [PDF]

open access: yes, 1986
The Software Fault Tree Analysis Tool allows the user to interactively modify the graphic representation of a fault tree. This manual describes the user interface of the tool.
Genung, Christi   +3 more
core   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

open access: yesPopulation Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva   +6 more
wiley   +1 more source

Fuzzy fault tree analysis of oil and gas leakage in subsea production systems

open access: yesJournal of Ocean Engineering and Science, 2018
This paper presents a probabilistic failure analysis of leakage of the oil and gas in a subsea production system using fault tree analysis (FTA). A fault tree was constructed by considering four major areas where the leakages can be initiated. These are:
A.S. Cheliyan, S.K. Bhattacharyya
doaj   +1 more source

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