In this paper, a special class of redundancy optimization problem with fuzzy random variables is presented. In this model, fuzzy random lifetimes are considered as basic parameters and the Er-expected of system lifetime is used as a major type of system performance. Then a redundancy optimization problem is formulated as a binary integer programming model. Furthermore, illustrative numerical ex...

A Digital virtual Disk (DVD) random access memory (RAM) Redundant Array of Inexpensive Libraries (RAIL) optical storage system has been developed and tested at NTT Integrated Information & Energy Systems Laboratories. The RAIL storage system incorporates multiple DVD libraries that consist of dual DVD-RAM drives. Each DVD library utilizes a single mechanical robot picker for media loading and u...

Based on analysis on reliability and security on three types of two-cell dynamic redundant systems which has been widely applied in modern railway signal system, whose isomorphic Markov model was established in this paper. During modeling several important factors, including common-cause failure, coverage of diagnostic systems, online maintainability, and periodic inspection maintenance, and as...

Reliability optimization of a redundant system with failure dependencies Haiyang Yu, Chengbin Chu , Ėric Châtelet and Farouk Yalaoui Institute Charles Delaunay (ICD, FRE CNRS 2848), Troyes University of Technology, Rue Marie Curie, BP 2060, 10010 Troyes, France Management School, Hefei University of Technology, 193 Tunxi Road, Hefei, China Abstract In a multi-component system, the failure of on...

Soft-decision based redundant residue number system (RRNS) assisted error control coding is proposed and its performance is evaluated. An RRNS(n, k) code is a maximum-minimum distance block code, exhibiting identical distance properties to Reed-Solomon (RS) codes. Hence their error correction capability is given by t = (n − k)/2. Different bit mapping methods are proposed, which result in syste...

Synchronization is used in dual redundant fault-tolerant system to make two computers work jointly. It determines the work mode and controls the operations of the system. The paper presents a dual redundant fault-tolerant system and proposes its process of synchronization based on task. The synchronization treats task as the minimal operation unit. And it is implemented with the assist of dual-...

Subgroup discovery is a local pattern discovery task, in which descriptions of subpopulations of a database are evaluated against some quality function. As standard quality functions are functions of the described subpopulation, we propose to search for equivalence classes of descriptions with respect to their extension in the database rather than individual descriptions. These equivalence clas...

“Content Cruising System (CCS)” is developed as a decentralized and autonomous distribution system for location-based contents. The content put into CCS carries itself to the destination location and tries to remain there by continual wireless ad-hoc communications among mobile nodes. Focusing on the density of nodes, to tackle the Broadcast Storm problem is imperative. CCS has an avoidance mec...

Eliminating the need for extensive wiring between sensors, actuators and a controller could reduce the cost and enhance the attractiveness of control systems for civil structures. In this study, wireless sensors are proposed for a structural control system with the wireless sensors responsible for the collection of state response data, calculation of control forces, and the issuing of command s...

Recently, MapReduce has been a key and popular technology for tackling data-intensive applications. But its two master servers in current MapReduce implementations have a single-point-of-failure problem, which may interrupt MapReduce operations and filesystem services. In this paper, we propose a hybrid takeover scheme, called PAReS (Proactive and Adaptive Redundant System). To further improve ...