Current general purpose operating systems are unable to support a new class of applications that have the same requirements as conventional applications with additional real-time constraints. We describe how an operating system can support these processes by having an admission policy to ensure that all of the processes’ timing requirements can be met, by monitoring the behavior of the processe...

background: stress is a nonspecific reaction to everything the body needs. although occupational stress exists in every occupation, it is seen with more frequency and intensity amongst those occupations related to human health. in this study, we aimed to investigate the level of occupational stress in operating room staffs working in the hospitals affiliated to isfahan university of medical sci...

The objective is to present a reservoir management system which is capable of determining optimal operating rules both for flood event based and normal operation while at the same time attempting to achieve ecologically oriented operation. In order to maintain the variability of the natural flow regime, a new dynamic operating policy is introduced for normal operation. Flood event based operati...

Even though real-time systems have the stringent constraint of completing tasks before their deadlines, many existing real-time operating systems do not implement fault tolerance capabilities. In this paper we summarize fault tolerant real-time scheduling policy for dynamic tasks with ready times and deadlines. Our focus in this paper is the implementation, which includes fault-tolerant schedul...

In this paper, we show that although ex ante equityholders would like to adopt an optimal displacement and operating policy, they may not have incentives to implement such a policy ex post when the manager acquires firmspecific human capital and becomes indispensable to the firm’s continued operation. An optimal mix of debt and equity can serve as a commitment device in disciplining the manager...

This paper deals with the M + 1 out-of-N:G system with correlated failure and single repair facility, where correlated failure means that i (1 ~ i ~ N) operating units in the system are possible to fail at the same time. We consider two repair policies, and under each repair policy Laplace transform of point-wise availability and reliability, meantime to the first system failure and stationary ...

This paper treats an optimal inspection and maintenance policy of a continuous time Markovian deteriorating system, which minimizes the total discount,~d expected time in which the system is not operating. The problem is formulated by a semi·Markov decision process and some properties of an optimal policy are obtained, that is, a control limit rule holds and as the system degrades, an optimal i...

When operating under uncertainty, a robust behaviour can often be learned by sampling a large number of cases, planning what to do precisely in those cases (which are deterministic) and then learning a general policy for what to do in future unseen cases. The learning can be done by classifying the actions that can be performed into the states that were met in the training cases. The resulting ...

This paper deals with the maintenance policy of a system subject to periodical inspections aimed at detecting the occurrence of failures. After the first N−1 failure, the system undergoes an imperfect repair that brings the system back to the operating condition while the Nth failure is followed by a perfect repair restoring the unit to an as-good-as-new condition. The limiting average availabi...