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Design optimization for reliable networking is necessary for Ethernet ring mesh networks with ITU-T G.8032 Ethernet ring protection recommendation or with the IEC 62439-3 high-availability seamless redundancy protocol. To achieve this goal, the precise analysis of reliability/availability in Ethernet ring mesh consisting of single or multiple rings is one of the basic needs. Calculation of network...
It will cause the loss of information in the distributed satellite networks, if the network node is failure. For this problem, a method for distributed satellite networks based on standby nodes is presented in this paper. Firstly, it can establish a main path and confirm main nodes according to max-throughput principle in this method. Secondly, it can establish standby nodes set for the main path...
With the aim to solve the frequent network reconfiguration problem caused by link failure in the broadband powerline communication (BPLC) system, this paper inroduces the two-way power frequency automatic communication system (TWACS) into current BPLC system. And in this BPLC and TWACS integrated communication system, a TWACS signaling based routing searching algorithm is proposed, to meet the requirements...
Relative correctness is the property of a program to be more-correct than another with respect to a specification, whereas traditional (absolute) correctness distinguishes between two classes of candidate programs with respect to a specification (correct and incorrect), relative correctness defines a partial ordering between candidate programs, whose maximal elements are the (absolutely) correct programs...
This paper addresses the usefulness of Artificial Bee Colony (ABC) optimization algorithm for assessment of distribution system reliability. The penalty cost functions are formulated which is related to the failure rate and repair time of each distribution segment. And also, satisfy the reliability constraint such as SAIFI, SAIDI, CAIDI and AENS. The finest values of failure rate and repair time cost...
In the past few decades, analytical models for maintenance optimization have been extensively investigated. As research continues, the cases considered during the mathematical modeling are much more practical, as well as complex, which brings many difficulties for solution. In this paper, we present an exact method for solving the selective maintenance model considering multiple maintenance actions...
Electricity market reconstituting relegates in power generation technologies and correspondence on the diminution of global greenhouse gas emission have paved the way for an increase in the use of generation. Holocene exploitation in the electric power and difficulty originate from construction and maintenance of large power plants have embossed a gravid deal of interest in distributed power generation...
Virtual Coordinate (VC) based algorithms do not use physical coordinates for addressing, and thus possess many advantages for large scale sensor networks. They rely on the validity of VCs of nodes. VCs are affected by events such as node failures which are unpredictable and inevitable in WSNs. This degrades the performance of the algorithms and may even reduce overall life of the network. A distributed...
Fault scrambling technique is considered a promising way to distribute faulty bits into different code words such that the number of faulty cells in each codeword is below the protection capability of the adopted EDAC coding techniques. However, the effectiveness of the scrambling technique depends on the determination of the row/column scrambling control words. Therefore, we propose a heuristic algorithm...
The contribution of this article is two local recovery methods that may reduce overhead and make a more immediate reconnection of disconnected nodes compared to the soft state global recovery method applied in WSNs running RPL [1]. In addition, we perform an analysis of the implication to better judge the context where local recovery methods should be used. One of our suggested methods is based on...
This paper proposes Differential Search Algorithm (DS) to solve optimization problem of radial distribution system reliability with distributed generation being present in the system as standby unit. DS algorithm simulates the seasonal migration behavior of many organisms which migrate from one habitat to a more efficient one in terms of availability of food. Here, optimum failure rate and repair...
Smart-Maintenance system integrates ICT technologies and mobile devices in order to support maintenance crew in any environment to ensure the availability of up-to-date technical information and provide more competitive services with higher levels of reliability. This allows maintenance management based on off-the-shelf tablets with user authentication based on digital certificates, role definitions,...
Selective maintenance policy and cannibalization policy are two very important fleet maintenance policies, but the two fleet maintenance policies have not been considered jointly yet. This paper proposes a selective maintenance model considering cannibalization. First of all, model assumptions are expounded, such as system configuration, system performance, mission description, multiple maintenance...
With the improvement of reliability of current aviation equipment, the field failure data is limited with few observations and random censoring observations. Aiming at the difficulty in reliability evaluation in this condition, a Monte Carlo simulation algorithm is employed to validate the feasibility of EM algorithm in the reliability evaluation of aviation equipments. The main thought is to assume...
An interval reliability analysis based on combination of the minimal path method for load point reliability evaluation is presented, aiming at figuring out the uncertainty and ambiguity of reliability parameters and load changing. According to the complexity of distribution network, this new algorithm sort the elements, as the result, which can rapidly obtain the reliability indices of individual...
Error correction code (ECC) and built-in self-repair (BISR) schemes have been wildly used for improving the yield and reliability of memories. Many built-in redundancy-analysis (BIRA) algorithms and ECC schemes have been reported before. However, most of them focus on either BIRA algorithms or ECC schemes. In this paper, we propose an ECC-Enhanced Memory Repair (EEMR) scheme for yield improvement...
Several models have been developed for imperfect repairs that assume that component is "better than old but worse than new" after repair. One of the most popular is the g-renewal process introduced by Kijima & Sumita [1]. They established an effectiveness parameter q, defining a virtual age of the system component at a given time after several repairs. Unfortunately, there is no closed...
Breadcrumb systems (BCS) aid first responders by communicating their physiological parameters to remotely located base stations. However, state-of-the-art research only focuses on deploying breadcrumb systems on the assumption of uncoordinated users, which is inefficient. In this paper, we present the first design, implementation, and evaluation of reliable multiuser breadcrumb systems (MUBCS) which...
Distribution Network Switch optimal planning can improve security and economy of power system and exert the potentiality of existing Distribution Network, which has great economic and social benefits. Combination the characteristics of Distribution Network switch optimal, Improved Partheno-Genetic Algorithm based on Niche technique is put forward to optimize the mummer and location of Distribution...
The system of equipment repairing and maintenance is one system that consists of all kinds of factors. The evaluation of this system's function and efficiency is the result of many professors' efforts. The application of WAA algorithm and CWAA algorithm can solve multi-attribute questions of evaluation, and order the program to choose the best one.
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