This paper considers the interval reliability of a repai:rable system for the time interval [T, T+xl. Optimum preventive maintenance policies maximizing (i) the limiting inten'al reliability when T is constant, and (ii) the interval reliability when T is exponential, and minimizing (iii) the expect,ed cost per unit of time, are derive;\. It is shown that under suitable conditions there exist op...

medication error (me) is the most common preventable cause of adverse drug events which negatively affects patient safety. inadequate, low-quality studies plus wide estimation variations in me from developing countries including iran, decreases the reliability of me evaluations. to clarify sources, underreporting reasons and preventive measures of mes, we reviewed iran current available literat...

deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. in this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. also, because of power market and generators’ forced outages stochastic behavior, monte carlo simulation is used for reliability evaluation. generation r...

The continuity in the electric supply of the electric installations is becoming one of the main requirements of the electric supply network (generation, transmission, and distribution of the electric energy). The achievement of this requirement depends from one side on the structure of the electric network and on the other side on the avaibility of the reserve source provided to maintain the su...

A recent major cluster randomized trial of screening, active disease treatment, and mass isoniazid preventive therapy for 9 months during 2006-2011 among South African gold miners showed reduced individual-level tuberculosis incidence but no detectable population-level impact. We fitted a dynamic mathematical model to trial data and explored 1) factors contributing to the lack of population-lev...

This paper presents a method to find the optimal production, repair/replacement and preventive maintenance policies for a degraded manufacturing system. The system is subject to random machine failures and repairs. The status of the system is deemed to degrade with repair activities. When a failure occurs, the machine is either repaired or replaced, and a replacement action renews the machine, ...

Genomics-based diagnostic data (GBDD) are becoming increasingly important for laboratory diagnostics. Due to the large quantity of and their heterogeneity, GBDD poses a big challenge. Current analysis tools primarily designed research do not meet requirements diagnostics automation, reliability, transparency, reproducibility, robustness, accessibility. This makes it difficult laboratories use t...

Preventive maintenance (PM) is an effective approach to promoting reliability. Time-based and condition-based maintenance are two major approaches for PM. No matter which approach is adopted for PM, whether a failure can be early detected or even predicted is the key point. This paper presents the experimental results of a failure prediction method for preventive maintenance by state estimation...

Article history: Received 28 October 2011 Accepted December, 5 2011 Available online 8 December 2011 Continuous generation of electricity of a power plant depends on the higher availability of its components/equipments. Higher availability of the components/equipments is inherently associated with their higher reliability and maintainability. This paper investigates the reliability, availabilit...

Springer Series in Reliability Engineering. Reliability and Optimal Maintenance of Series Systems with Imperfect Repair and.Based on the authors research, Reliability and Optimal Maintenance presents. No DRM included format: PDF eBooks can be used on all Reading Devices.Optimal maintenance policies aim to provide optimum system reliability and safety performance at the lowest possible maintenan...