This paper investigates the use of redundancy and self repairing against node failures in distributed storage systems, using various strategies. In replication method, access to one replication node is sufficient to reconstruct a lost node, while in MDS erasure coded systems which are optimal in terms of redundancy-reliability tradeoff, a single node failure is repaired after recovering the ent...

In this paper we address the possibility to improve the reliability of small to middle-size circuits without employing redundancy. Circuits’ reliability is improved by reducing the logic depth of critical paths since the probability of failure of each output of the circuit depends no the logic depth of critical paths. Circuits of the same size were considered, as well as different synthesized v...

SADAN KULTUREL-KONAK1, ALICE E. SMITH2 and DAVID W. COIT3 1Management Information Systems, Penn State Berks-Lehigh Valley College, Tulpehocken Road, P.O. Box 7009, Reading, PA 19610-6009, USA E-mail: [email protected] 2Department of Industrial and Systems Engineering, Auburn University, 207 Dunstan Hall, Auburn, AL 36849, USA E-mail: [email protected] 3Department of Industrial and Systems Engi...

Model Predictive Control (MPC) strategies are typically implemented in two levels: a steady-state target calculation and a control calculation. The steady-state target calculation consumes excess degrees of freedom within the control problem to provide optimal steady-state performance with respect to some specified objective. In some MPC approaches, the target calculation is formulated as a Lin...

Redundancy allocation problems (RAPs) have attracted much attention for the past thirty years due to its wide applications in improving the reliability of various engineering systems. Since RAP is an NP-hard problem and exact methods are only applicable to small instances, various heuristic and meta-heuristic methods have been proposed to solve it. In the literature, most studies on RAPs have b...

Evolution is commonly viewed as a process of hill climbing on a fitness landscape. A major problem with such a view is the presence of local optima; sub-optimal regions of the landscape from which no further progress is possible. There is an increasing amount of evidence [3,4,7], however, that the presence of large degrees of redundancy in the genome may alleviate this problem through the creat...

Applying document clustering techniques to multidocument summarization is a challenging problem, mostly because of the redundancy that exists in multiple sources. We compare several document clustering techniques for multi-document summarization in the NTCIR-4 TSC test collection. We conducted an experiment to evaluate the effectiveness of reducing redundancy in the production of summaries. Fro...

Al~traet--All failure detection methods are based, either explicitly or implicitly, on the use of redundancy, i.e. on (possibly dynamic) relations among the measured variables. The robustness of the failure detection process consequently depends to a great degree on the reliability of the redundancy relations, which in turn is affected by the inevitable presence of model uncertainties. In this ...