For the safe, stable, and economic operation of thermal power units in new systems, condition-based maintenance mode storage strategy key equipment materials for generation enterprises were selected. According to linkage demand maintenance, a Weibull probability density function was used calculate spare parts demand, an intelligent optimization model with availability constraint established. Th...

Aircraft maintenance is undergoing a paradigm shift towards predictive maintenance, where the use of sensor data and Remaining-Useful-Life prognostics are central. This paper proposes an integrated approach for aircraft planning multiple multi-component systems, components repairables. First, model-based developed. These updated over time, as more become available. Then, rolling horizon integer...

In this paper, we present a real-time fault-tolerant design for a d-dimensional hypercube multiprocessor with two modes of operations and examine its reconfigurability. The augmented hypercube, at stage one, has a spare node connected to each node of a subcube of dimension i, and the spare nodes are also connected as a (d i)-dimensional hypercube. At stage two, the process is repeated by assign...

We discuss SPaRe: selective partial replication, a methodology for concurrent fault detection in finite state machine (FSMs). The proposed method is similar to duplication, wherein a replica of the circuit acts as a predictor that immediately detects errors by comparison to the original FSM. However, instead of duplicating the FSM, SPaRe selects a few prediction functions which only partially r...

This is a study of the relationship between aircraft readiness and spares usage at the squadron level, specifically for the F-4B, CH-53, and TA-4F. The study determines the best combination of aircraft, maintenance man-hours, and spare parts for various budgets. Since the availability of spare parts is a big factor in aircraft readiness, a detailed examination was made of the spare parts resupp...

Despite numerous improvements in the development and maintenance of software, bugs and security holes exist in today’s products, and malicious intrusions happen frequently. While this is a general problem, it explicitly applies to webbased services. However, Byzantine fault-tolerant (BFT) replication and proactive recovery offer a powerful combination to tolerate and overcome these kinds of fau...

(not shown) suggested that the number of older children was a more influential variable. Eczema in the first year of life was also independently related to the number ofolder children in the household (see table). There was no association between eczema in infancy and younger children of the family (who were not yet born). Comment Variations in labelling respiratory symptoms probably exist amon...

Existing approaches for modelling maintenance rely on oversimplified assumptions which prevent them from reflecting the complexity found in industrial systems. In this paper, we propose a novel approach that enables the modelling of non-identical multi-unit systems without restrictive assumptions on the number of units or their maintenance characteristics. Modelling complex interactions between...