Results 21 to 30 of about 77,146 (265)

Quantification of Temporal Fault Trees Based on Fuzzy Set Theory [PDF]

open access: yes, 2014
Fault tree analysis (FTA) has been modified in different ways to make it capable of performing quantitative and qualitative safety analysis with temporal gates, thereby overcoming its limitation in capturing sequential failure behaviour. However, for many systems, it is often very difficult to have exact failure rates of components due to increased ...
Gordon, Neil   +3 more
openaire   +2 more sources

Binary classification based on a combination of rough set theory and decision trees

open access: yesInnovative Technologies and Scientific Solutions for Industries, 2023
The subject of the study is to improve the accuracy and efficiency of classification algorithms using decision trees by integrating the principles of Rough Set theory, a mathematical approach to approximating sets. The aim of the study is to develop a hybrid model that integrates rough set theory with decision tree algorithms, thereby solving the ...
Dmytro Chernyshov, Dmytro Sytnikov
openaire   +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

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

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 Energy-Efficient and Fault-Tolerant Convergecast Protocol in Wireless Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2012
The simple graph theory is commonly employed in wireless sensor networks topology control. An inherent problem of small-granularity algorithms is the high computing complexity and large solution space when managing large-scale WSNs. Computed transmission
Ting Yang, ChunJian Kang, Guofang Nan
doaj   +1 more source

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