traffic fatalities are a major cause of morbidity and mortality in iran. occupational sleep medicine field needs more cost-effective and applicable tests for screening purposes. this study reports on a pilot screening study for drowsy drivers in an urban iranian sample of commercial drivers. the maintenance of wakefulness test (mwt) measures the ability to remain awake objectively. sleep latenc...

background; methadone maintenance therapy (mmt) is an evidence-based approach for opiate addiction treatment. while its effectiveness in reducing opiate use has been evidently verified, unanswered questions with respect to the cultural scenarios for mmt programs remain unanswered. this study was conducted to explore understanding address mmt initiation among a women-recruited sample of persons ...

In this paper, a new method for modelling and estimation of reliability parameters of power transformer components in distribution and transmission voltage levels for preventive-corrective maintenance schedule of transformers is proposed. In this method, with optimal estimation of Weibull distribution parameters using least squares method and input data uncertainty reduction, failure rate and p...

Since lean concept has appeared many works have been done on decreasing or even eliminating of wastes such as extra inventory. Although these studies have not taken into account expected availability seriously. So in this paper, a Multiple Objective Decision Making (MODM) model has been developed by viewpoint of these subjects. They are decreasing wastes and increasing system availability. Wast...

Maintenance helps to extend equipment life by improving its condition and avoiding catastrophic failures. Appropriate model or mechanism is, thus, needed to quantify system availability vis-a-vis a given maintenance strategy, which will assist in decision-making for optimal utilization of maintenance resources. This paper deals with semi-Markov process (SMP) modeling for steady state availabili...