M/M/1 queuing model with ordinary maintenance and breakdowns
Modelos multiestado de reemplazamiento con reparación imperfecta.
Gran parte de los autores que han escrito sobre políticas estocásticas de reemplazamiento, han estado frecuentemente manteniendo dos supuestos en los modelos por ellos presentados:a) el sistema sólo tiene dos estados posibles, unos de funcionamiento y otro de avería.b) tras la avería, el sistema es reparado o reemplazado, quedando "tan bien como nuevo".En este artículo se obtienen unas funciones de coste, para sistemas en los cuales no pueden mantenerse estos supuestos. A través de estas funciones...
Multi-class decision procedures for the inspection operation.
New formula for the failure/repair frequency of multi-state monotone systems and its applications
On a bulk queueing system with impatient customers.
On a mean reward from a Markov replacement process with only one isolated class of recurrent states
On a multilevel controlled bulk queueing system .
On a single-server queue with fixed accumulation level, state dependent service, and semi-Markov modulated input flow.
On adaptive replacement policies
On an queueing system.
On optimal replacement policy
A system with a single activated unit which can be in states is considered. Inspections of the system are carried out at discrete time instants. The process of deterioration of the unit is supposed to be Markovian. The unit by its operation brings an income which is monotonically dependent on its state. A replacement of the unit is associated with certain costs. The paper gives an effective algorithm for finding the replacement strategy maximizing the average income of the system per unit time....
On selecting the most reliable components.
On self-optimizing control of Markov processes
On some queue length controlled stochastic processes.
On system reliability under random load of elements
On the survival time of a duplex system: A Sokhotski-Plemelj problem.
On the total working time of a repaired unit
Optimal age replacement policy of a -out-of- system with age-dependent minimal repair
Optimal investment strategies for renewable facilities.
Optimal policies for a database system with two backup schemes
This paper considers two backup schemes for a database system: a database is updated at a nonhomogeneous Poisson process and an amount of updated files accumulates additively. To ensure the safety of data, full backups are performed at time or when the total updated files have exceeded a threshold level , and between them, cumulative backups as one of incremental backups are made at periodic times