Series 2 - Queueing Models
• Single Line – Single Server
• Single Line – Multiple Server
• Constant Service Rate
• Finite Population
When you complete this series, you will be able to :
• characterize , identify , and distinguish among the four , primary types of
• know how and when to apply the use of these queueing models
• perform simple computations to determine queue metrics for each of the
four , primary types of queueing models
I usually introduce students to this type of course by discussing queuing or waiting line theory. This is because most of us have had personal experience …..waiting in line.
The body of knowledge about waiting lines - queuing theory - is an important part of operations management and a valuable tool for the operations manager. Waiting lines are common situation. They may , e.g., take the form of cars waiting for repair at an auto service center, printing jobs waiting to be completed in a print shop, or students waiting for a consultation with their professor. Some common additional applications are noted below.
Just as linear programs are models used in a wide variety of operations decisions, waiting line models are useful in both manufacturing and service areas.
Analysis of queues in terms of
• waiting line length
• average waiting, and other factors
…helps us understand service systems as bank teller stations, maintenance activities that might repair broken machinery, and shop floor control activities.
• Patients waiting in a doctor's office and broken drill presses
waiting in a repair facility have a lot in common from an
operations perspective. Both use human and equipment
resources to restore valuable production assets to good
• Operations managers recognize the trade-off that takes place between the
cost of providing good... [continues]
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