In these models, three various sub-processes may be distinguished:
• Arrival Process: includes number of customers arriving, several types of customers, and one type of customers’ demand, deterministic or stochastic arrival distance, and arrival intensity. The process goes from event to event, i.e. the event “customer arrives” puts the customer in a queue, and at the same time schedules the event “next customer arrives” at some time in the future.
• Waiting Process: includes length of queues, servers’ discipline (First In First Out). This includes the event “start serving next customer from queue” which takes this customer from the queue into the server, and at the same time schedules the event “customer served” at some time in the future.
• Server Process: includes a type of a server, serving rate and serving time. This includes the event “customer served” which prompts the next event “start serving next customer from queue”.
(Troitzsch, 2006)
In these models, three various sub-processes may be distinguished: • Arrival Process: includes number of customers arriving, several types of customers, and one type of customers’ demand, deterministic or stochastic arrival distance, and arrival intensity. The process goes from event to event, i.e. the event “customer arrives” puts the customer in a queue, and at the same time schedules the event “next customer arrives” at some time in the future.• Waiting Process: includes length of queues, servers’ discipline (First In First Out). This includes the event “start serving next customer from queue” which takes this customer from the queue into the server, and at the same time schedules the event “customer served” at some time in the future.• Server Process: includes a type of a server, serving rate and serving time. This includes the event “customer served” which prompts the next event “start serving next customer from queue”. (Troitzsch, 2006)
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