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On fractional dynamic faults with thresholds

Stefan Dobrev, Rastislav Královič, Richard Královič, Nicola Santoro
2008 Theoretical Computer Science  
Fractional threshold and broadcast The failure model we consider, and that we shall call the fractional dynamic faults with threshold or simply fractional threshold model, is a combination of the fractional  ...  Unlike localized communication failures that occur on a fixed (although a priori unknown) set of links, dynamic faults can occur on any link.  ...  This investigation is the first step in the analysis of distributed computing in spite of fractional dynamic faults with thresholds. complete graph unoriented Ω (n 2 ), O(n 3 ) hypercube oriented O(n 2  ... 
doi:10.1016/j.tcs.2008.02.008 fatcat:gnfuzwc74bf6rogdos5xf3xxpa

On Fractional Dynamic Faults with Threshold [chapter]

Stefan Dobrev, Rastislav Královič, Richard Královič, Nicola Santoro
2006 Lecture Notes in Computer Science  
The investigations in this model have focused on designing broadcasting algorithms with low time complexity and high proba-4 since the faults are dynamic, no restriction is clearly posed on their location  ...  Not surprisingly, a large research effort has been on the analysis of broadcasting in the presence of dynamic communication faults.  ...  Fractional Threshold and Broadcast The failure model we consider, and that we shall call fractional dynamic faults with threshold or simply fractional threshold model, is a combination of the fractional  ... 
doi:10.1007/11780823_16 fatcat:jkazylbatjbh3gdejapqmugudy

Estimation and Fault Diagnosis of Lithium-Ion Batteries: A Fractional-Order System Approach

Shulan Kong, Mehrdad Saif, Guozeng Cui
2018 Mathematical Problems in Engineering  
This study investigates estimation and fault diagnosis of fractional-order Lithium-ion battery system.  ...  Once a fault is detected and isolated, a fractional-order sliding mode observer is constructed to provide an estimate of the isolated fault.  ...  If there is only one residual, say 0 ( ) with 0 ∈ {1, 2, . . . , }, which is below the threshold, then it is claimed that a fault has been detected and the fault is isolated as 0 ( ). Remark 13.  ... 
doi:10.1155/2018/8705363 fatcat:hqkwvzyo6vdabowxjhjjhktdfa

Static and dynamic connectivity in bed-scale models of faulted and unfaulted turbidites

T. Manzocchi, J. J. Walsh, M. Tomasso, J. Strand, C. Childs, P. D. W. Haughton
2007 Geological Society Special Publication  
A range of unfaulted and faulted bed-scale models with sheet-like or lobate bed geometries and faults of comparable sizes to beds have been built and analysed in terms of bed connectivity and fractional  ...  As we are principally considering beds thinner than ca. 1m, the faults are sub-seismic with maximum fault throws up to ca. 5m.  ...  We discuss the implications of this following a discussion on the dynamic connectivity of the models.  ... 
doi:10.1144/sp292.18 fatcat:627jsrawvrexfe2uhxuvln4x4y

Dynamic Resistance of YBCO-Coated Conductors in Applied AC Fields With DC Transport Currents and DC Background Fields

Robert C. Duckworth, Yifei F. Zhang, Tam Ha, Michael J. Gouge
2011 IEEE transactions on applied superconductivity  
and 3) demonstrated a linear dependence with the applied ac field once a threshold field was exceeded.  ...  With the sample orientation set such that the conductor face was either parallel or perpendicular to the ac and dc applied fields, the dynamic resistance was measured at different fractions of the critical  ...  The absence of dynamic resistance is consistent with expected threshold fields from (2) for YBCO-1 and YBCO-2 since they both have a superconductor thickness on the order of 1 µm.  ... 
doi:10.1109/tasc.2010.2083621 fatcat:ap6y3syzgrbbng4eisyqny4z4y

Precursory dynamics in threshold systems [article]

J.S. Sá Martins, J.B. Rundle, M. Anghel, W. Klein
2002 arXiv   pre-print
A precursory dynamics, motivated by the analysis of recent experiments on solid-on-solid friction, is introduced in a continuous cellular automaton that mimics the essential physical contents of earthquake  ...  The resulting system of equations for the inter-event cycle can be decoupled and yields an analytical solution in the mean-field limit, exhibiting a smoothing effect of the dynamics on the stress field  ...  We presented in this paper a SCCA model with aseismic creep superimposed on a seismic threshold dynamics, as recent laboratory experiments have shown to exist on solid-on-solid friction.  ... 
arXiv:cond-mat/0101343v2 fatcat:bpshco525bffpodbnp5wmidpgi

Precursory dynamics in threshold systems

J. S. Sá Martins, J. B. Rundle, M. Anghel, W. Klein
2002 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
This parameter, with dimensions of inverse time, will in general be dependent on both the stress level and the temperature.  ...  In particular, the ␣ value for a fault may determine its overall behavior as of a scaleinvariant type or a nucleation type, with a mixed composition in between, reproducing features observed in real faults  ...  We presented in this paper a SCCA model with aseismic creep superimposed on a seismic threshold dynamics, as recent laboratory experiments have shown to exist on solid-onsolid friction.  ... 
doi:10.1103/physreve.65.056117 pmid:12059657 fatcat:44u3ifnoeba45cp732t4k54mqa

Experimental constraints on dynamic fragmentation as a dissipative process during seismic slip

Troy Barber, W. Ashley Griffith
2017 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
One contribution of 6 to a Theo Murphy meeting issue 'Faulting, friction and weakening: from slow to fast motion'.  ...  This study benefited greatly from discussions with Hamed Ghaffari, Chris Borjas and Qinhong Hu.  ...  We acknowledge Kermit Beird and Merlynd Nestell for their contributions in specimen preparation, as well as Jiechao Jiang, Majie Fan, Elizabeth Griffith and Samantha Carter for help with microstructural  ... 
doi:10.1098/rsta.2016.0002 pmid:28827424 fatcat:dqy2s6o3onh63nkdabx5qj7r2e

Faults Self-Organized by Repeated Earthquakes in a Quasi-Static Antiplane Crack Model [article]

Didier Sornette, Christian Vanneste
1995 arXiv   pre-print
In this "crack" model, as in the "dislocation" version previously studied, we find that the occurrence of repeated earthquakes organizes the activity on well-defined fault-like structures.  ...  ) and/or a genuine dynamics must be introduced to resolve this frustration.  ...  The first case corresponds to a very broad distribution (the average is mathematically divergent) with a significant fraction of the bonds having a very large threshold.  ... 
arXiv:cond-mat/9510032v1 fatcat:bx2zna2oszd4np6vej7g7x23ey

A Fault Identification Method in Distillation Process Based on Dynamic Mechanism Analysis and Signed Directed Graph

Wende Tian, Shifa Zhang, Zhe Cui, Zijian Liu, Shaochen Wang, Ya Zhao, Hao Zou
2021 Processes  
To address the problem, a novel DMA-SDG fault identification method that combines dynamic mechanism analysis based on process simulation and signed directed graph is proposed for the distillation process  ...  Secondly, sensitivity analysis and dynamic mechanism analysis in process simulation are introduced to the SDG model to improve the completeness of this model based on expert knowledge.  ...  The SIL (safety integrity level) analysis of a fractionating system with the grade of control schemes referenced to the importance rank of process variables was completed based on dynamic simulation [  ... 
doi:10.3390/pr9020229 fatcat:p7kpemqhdjeixoagdzn2mh66dm

Fault Localization via Risk Modeling

R R Kompella, J Yates, A Greenberg, A C Snoeren
2010 IEEE Transactions on Dependable and Secure Computing  
Internet backbone networks are under constant flux in order to keep up with demand and to offer new features.  ...  We show that our system works with accuracy exceeding 80% for many failure scenarios, while delivering extremely high precision (greater than 80%).  ...  −COVERAGE with different query topology snapshots dynamic computation of failed paths algorithm SCORE algorithm SCORE with different query error thresholds periodically refreshed  ... 
doi:10.1109/tdsc.2009.37 fatcat:unffkarjrfa3zfv7wtepajs7nu

Predictability of self-organizing systems

S. L. Pepke, J. M. Carlson
1994 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
We focus on a set of models which have been studied as analogs of earthquake faults and fault systems, and apply methods based on techniques which are of current interest in seismology.  ...  based on temporal variations in the local activity.  ...  on a fault.  ... 
doi:10.1103/physreve.50.236 pmid:9961962 fatcat:g7zn32azn5fafcdwefw2upa7de

A Unifying Phase Diagram for the Dynamics of Sheared Solids and Granular Materials

Yehuda Ben-Zion, Karin A. Dahmen, Jonathan T. Uhl
2011 Pure and Applied Geophysics  
The mean field scaling predictions agree with experimental, numerical, and observational data on deformation avalanches of solids, granular materials, and earthquake faults.  ...  The basic dynamic regimes seen in the response of both solids and granular materials to slowly increasing loading are scaleinvariant behavior with power law statistics, quasi-periodicity of system size  ...  fault dynamics).  ... 
doi:10.1007/s00024-011-0273-7 fatcat:urdfqihobbcgjnnu23iwyax6ia

Aging in coherent noise models and natural time

Ugur Tirnakli, Sumiyoshi Abe
2004 Physical Review E  
In this respect, the variable x i could represent the threshold for movement of a fault (or a point in a fault), be regarded as nondeterministic external stress acting on faults, and the fraction f be  ...  are replaced by new agents with new thresholds drawn from p thresh ͑x͒, (ii) a small fraction f of the N agents should be chosen at random and given new thresholds, and then (iii) go back to (i) for the  ... 
doi:10.1103/physreve.70.056120 pmid:15600705 fatcat:jq3jkxotuzgsflrulwfo3i34xe

Particle Swarm Optimization Fractional Slope Entropy: A New Time Series Complexity Indicator for Bearing Fault Diagnosis

Yuxing Li, Lingxia Mu, Peiyuan Gao
2022 Fractal and Fractional  
Then we apply PSO-FrSlEn to the field of fault diagnosis and propose a single feature extraction method and a double feature extraction method for rolling bearing fault based on PSO-FrSlEn.  ...  In order to improve the ability of SlEn to distinguish different types of signals and solve the problem of two threshold parameters selection, a new time series complexity indicator on the basis of SlEn  ...  A big factor that leads to this situation is the influence of the two threshold parameter settings on its effect.  ... 
doi:10.3390/fractalfract6070345 fatcat:djto7rclrjan7pwfo6zdixqs5y
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