Results 21 to 30 of about 9,750,144 (291)

On Cavity Approximations for Graphical Models [PDF]

open access: yes, 2007
We reformulate the Cavity Approximation (CA), a class of algorithms recently introduced for improving the Bethe approximation estimates of marginals in graphical models.
B. Wemmenhove   +8 more
core   +4 more sources

Wind Power Performance Optimization Considering Redundancy and Opportunistic Maintenance

open access: yesMendel, 2018
In This paper the redundancy and imperfect opportunistic maintenance optimization of a multi-state weighted k-out-of-n system is formulated. The objective is to determine the k-out-of-n system redundancy level and the maintenance strategy which will ...
Hadi Abdollahzadeh Sangroudi
doaj   +1 more source

Quark Model, Large Order Behavior and Nonperturbative Wave Functions in QCD [PDF]

open access: yes, 1994
We discuss a few, apparently different (but actually, tightly related) problems: 1. The relation between QCD and valence quark model, 2. The evaluation of the nonlocal condensate $ \la \bar{q}(x)q(0)\ra $, its relation to heavy-light $\bar{q}Q$ quark
Ariel R. Zhitnitsky   +46 more
core   +1 more source

Analysis of k-Out-of-N-Systems with Different Units under Simultaneous Failures: A Matrix-Analytic Approach

open access: yesMathematics, 2022
An N-system with different units submitted to shock and wear is studied. The shocks cause damage and, eventually, simultaneous failures of several units. The units can also fail due to internal failures.
Delia Montoro-Cazorla   +1 more
doaj   +1 more source

Extremum sieve estimation in k-out-of-n system [PDF]

open access: yes, 2016
The paper considers nonparametric estimation of absolutely continuous distribution functions of independent lifetimes of non-identical components in k-out-of-n systems, 2 k-out-of-n, from the observed "autopsy" data.
Komarova, Tatiana
core   +1 more source

Standing Waves in the FitzHugh-Nagumo System and a Problem in Combinatorial Geometry [PDF]

open access: yes, 2006
We show that there is a close relation between standing-wave solutions for the FitzHugh-Nagumo system \[ \Delta u +u(u-a)(1-u) - \delta v=0, \ \ \Delta v-\delta \gamma v + u=0 \ \ \mbox{in} \ R^N,\] \[ u, v \to 0 \ \mbox{as} \ |x| \to +\infty ...
Alikakos   +42 more
core   +1 more source

A Simple Sum of Products Formula to Compute the Reliability of the KooN System

open access: yesIEEE Access, 2021
Reliability block diagram (RBD) is a well-known, high-level abstract modeling method for calculating systems reliability. Increasing redundancy is the most important way for increasing Fault-tolerance and reliability of dependable systems.
Saeid Pashazadeh   +1 more
doaj   +1 more source

Optimal Allocation of Randomly Selected Redundancies to k–Out–of–n System With Independent but Nonidentical Components

open access: yesIEEE Access, 2020
The quality of manufactured components in different batches may be different because of the influence of various stochastic factors. This paper studies the optimal allocation of redundancies drawn from these randomly selected batches to k-out-of-n system
Xiaoliang Ling, Yinzhao Wei
doaj   +1 more source

Analysis of Repairable k-out-of-n System Model Using Inter-Arrival Failure Times

open access: yesITM Web of Conferences, 2018
Examination of repairable k-out-of-n system which has an important place in systems is an important application area of reliability theory. In general, the reliability analysis of a repairable system is based on the distribution of the lifetimes of the ...
GÜRCAN Mehmet   +2 more
doaj   +1 more source

Is the Theta+ a K pi N bound state? [PDF]

open access: yes, 2004
Following a recent suggestion that the $\Theta ^+$ could be a $K \pi N$ bound state we perform an investigation under the light of the meson meson and meson baryon dynamics provided by the chiral Lagrangians and using methods currently employed to ...
Llanes-Estrada, Felipe J.   +2 more
core   +3 more sources

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