1. How did Kelly show that the service time at a symmetrie queue can?
Generally distributed service times were introduced by Kelly (1976) where he showed that the service time at a symmetrie queue can be generally distributed without affecting the product form of the steady state distribution.
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2. What is the definition of a symmetrie queue?
Kelly (1975a) introduced the concept of the symmetrie queue as a queue in which the proportion of service given to a particulax position when there are n customers in the queue is equal to the probability that a customer arriving to find n — 1 customers already2in the queue will be allocated to that position.
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3. What is the probability that a customer in T makes a transfer in the same time interval?
In continuous time ^(s, T) is the rate that a pattern of customers given by T simultaneously make a transfer, while5in discrete time q(s,T) denotes the probability that the customers in T make a transfer in the same time interval.
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4. What is the effect of a single queue on the probability of a customer leaving a?
Pujolle et al. looked first at a single queue and then at a tandem system of queues in which only one simultaneous arrival and depaxture were allowed.
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