An experiment was carried out to estimate the effect of sound feedback on the work of a plant operator. Eight students of computer science operated a process simulation program of an assembly line with computer numeric controlled (CNC) robots. Relevant information of disturbances and machine breakdowns was given only in a visual (test condition 1), and in visual and audible form (test condition...

In this work, we seek to design a model that contributes the study and resolution of multi-objective rescheduling problem in dynamic permutation flow shop contexts. type problem, where objectives can be valued heterogeneous units, difficulty achieving an optimal solution leads finding set non-dominated efficient solutions (also called Pareto front). On other hand, will also consider potential a...

In most queueing systems the server may be subjected to lengthy and unpredictable breakdowns while serving a customer. For instance, in manufacturing systems the machine may breakdown due to malfunction or job related problems; in computer systems, the machine may be subject to scheduled backups and predicted failures. In these systems, server breakdown results in a period of server unavailabil...

BACKGROUND Communication breakdowns are a common threat to surgical safety, but there are little data to guide initiatives to improve communication. STUDY DESIGN In surgeon-review of 444 surgical malpractice claims from 4 liability insurers, we identified 60 cases involving communication breakdowns resulting in harm to patients. Two surgeon-reviewers analyzed these cases to identify common ch...

Predictive maintenance is an approach to prevent failure in a system by estimating the time of before mechanical component fails, so that decision can be properly planned. In public transport industry, whose efficiency heavily dependent on equipment, anticipating breakdowns vital. this study, predictive work was carried out order minimize problems such as malfunctions vehicles, stopping voyage,...

In the current paper, we study the concept of dynamic scheduling in flexible flow Shop with limited carrier under stochastic machine breakdowns and processing time. In most flexible flow shop scheduling methods reported in the literature consider a determinist environment, where all data of the problem are known in advance. Most of these works focused on the development of methods to produce a ...

This paper considers the impact of random machine breakdowns on the classical Economic Production Quantity (EPQ) model for a product subject to exponential decay and under a no-resumption (NR) inventory control policy. A product is manufactured in batches on a machine that is subject to random breakdowns in order to meet a constant demand over an infinite planning horizon. The product is assume...