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In this paper a two-state Markovian maintenance process where the true state is unknown will be considered. The operating cost per period is a continuous random variable which depends on the state of the process. If investigation cost is incurred at the beginning of any period, the system wit I be returned to the "in-control" state instantaneously. This problem is solved using the average crite...

In this paper, a markovian queue with two types of servers and buffer space is considered. The resequencing constraint is imposed according to which the customers leave the system in the same order in which they entered it. For finite buffer queue, the steady state queue size distribution has been obtained.? 

a two server queueing system with single and batch service is considered in this paper. the arrival process is assumed to be poisson and the service rate follows an exponential distribution. server-i serves the customers in both single and batch service, while server-ii serves the customers in batch service only. the laplace transform of the transient and steady state behavior of the model is c...

We study the single server queueing system with two types of Abstract failure to servicechannels including the preemptive priority to the repair of major failure. The units arrive at thesystem in a poisson fashion and are served exponenitally. The steady - state probabilities ofvarious states by using generating function have been obtained.

mohaghegh-esabzevarididthemostseriouscontemplations over political life in the safavid era, discussing various political systems from a pragmatic view point. social life, law, just ruler, the objectives of state, utopian political system, defective political system, the charactristics of ruling system, the types of social classes and guilds, the organization of state, emphasis on the asceticism...

Special Issue on " Control in Hybrid Systems " Abstract This paper describes an approach to synthesizing discrete controllers for hybrid systems based on finite-state approximations of the hybrid system dynamics. The plant is a hybrid system with continuous dynamics that can be switched by a discrete-valued input signal. The information available to the supervisory controller is an event signal...