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Hardware Reliability Analysis of a Coal Mine Gas Monitoring System Based on Fuzzy-FTA

open access: yesApplied Sciences, 2021
The hardware reliability of a gas monitoring system was investigated using the fuzzy fault tree analysis method. A fault tree was developed considering the hardware failure of the gas monitoring system as a top event.
Jingtian Xu, Man Yang, Shugang Li
doaj   +1 more source

On the VC-dimension‎, ‎covering and separating properties of the cycle and spanning tree hypergraphs of graphs [PDF]

open access: yesTransactions on Combinatorics, 2022
In this paper‎, ‎we delve into studying some relations between the structure of the cycles and spanning trees of a graph through the lens of its cycle and spanning tree hypergraphs which are hypergraphs with the edge set of the graph as their vertices ...
Alireza Mofidi
doaj   +1 more source

On the regularization of extremal three-point functions involving giant gravitons

open access: yesPhysics Letters B, 2015
In the AdS5/CFT4 set-up, extremal three-point functions involving two giant 1/2 BPS gravitons and one point-like 1/2 BPS graviton, when calculated using semi-classical string theory methods, match the corresponding three-point functions obtained in the ...
Charlotte Kristjansen   +2 more
doaj   +1 more source

Failure Analysis for Hydraulic System of Heavy-Duty Machine Tool with Incomplete Failure Data

open access: yesApplied Sciences, 2021
A hydraulic system is a key subsystem of heavy-duty machine tools with a high failure intensity, the failure of which often causes shutdown of production and economic loss in machining. Therefore, it is necessary to implement failure analysis to identify
Shizheng Li   +6 more
doaj   +1 more source

Multi-decision tree prediction model for coal seam floor water inrush based on cost-sensitive theory

open access: yesGong-kuang zidonghua, 2020
When predicting coal seam floor water inrush, the situation is generally divided into two states: safe state and water inrush state. The state data has non-equilibrium characteristics.
LI Yanmin, ZHOU Chenyang, LI Fenglian
doaj   +1 more source

Unfolding of Finite Concurrent Automata [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
We consider recognizable trace rewriting systems with level-regular contexts (RTL). A trace language is level-regular if the set of Foata normal forms of its elements is regular. We prove that the rewriting graph of a RTL is word-automatic.
Alexandre Mansard
doaj   +1 more source

Failure Probability Analysis of Coherent Systems using Intuitionistic Fuzzy Fault Tree Approach [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences
In scenarios where system component failure probabilities are insufficient or imprecise, classical fault tree analysis methods often fail in providing precise assessments of system reliability and safety.
Mintu Kumar   +2 more
doaj   +1 more source

Forwarding-tree Construction and Link Scheduling Algorithm for Data Collection [PDF]

open access: yesJisuanji gongcheng, 2017
Most data collection methods based on Compressive Sensing(CS) usually assume that the network has no interference or it can take effective conflict avoidance measures.When these methods are applied to the network with interference or noise,they cannot ...
LIU Yang
doaj   +1 more source

An Intelligent Fault Analysis and Diagnosis System for Electromagnet Manufacturing Process Based on Fuzzy Fault Tree and Evidence Theory

open access: yesMathematics, 2022
Because an electromagnet has a complex structure and manufacturing process, it is difficult to analyze the overall failure of the electromagnet. In order to solve this problem, a fault intelligent analysis and diagnosis system based on fuzzy fault tree ...
Jihong Pang, Jinkun Dai, Yong Li
doaj   +1 more source

Cosmological Cutting Rules

open access: yesJournal of High Energy Physics, 2021
Primordial perturbations in our universe are believed to have a quantum origin, and can be described by the wavefunction of the universe (or equivalently, cosmological correlators). It follows that these observables must carry the imprint of the founding
Scott Melville, Enrico Pajer
doaj   +1 more source

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