Waiting Lines
17
18-1 Waiting Lines William J. Stevenson Operations Management 8 th edition
description
Operations ManagementProduction Management
Transcript of Waiting Lines
Waiting lines are non-value added occurrences
analysis of waiting lines.
• Goal of queuing analysis is to minimize the sum of
two costs
• oss of !usiness
operations
unrestricted
is limited
Arrivals ServiceWaiting
• $atient
served
• "eneging
• ,oc-eying
• al-ing
• /pon arriving0 decide the line is too long and decide
not to enter the line
System tili,ation
A v e r a g e n u m - e r o n
#.
2. System utilization
3. %mplied cost
Measured by:
1. Single channel0 constant service time
2. Multiple channel0 e5ponential service time
3. Multiple priority service0 e5ponential service
time
• Magazines in waiting rooms
• *dvertise other goods6services
analysis of waiting lines.
• Goal of queuing analysis is to minimize the sum of
two costs
• oss of !usiness
operations
unrestricted
is limited
Arrivals ServiceWaiting
• $atient
served
• "eneging
• ,oc-eying
• al-ing
• /pon arriving0 decide the line is too long and decide
not to enter the line
System tili,ation
A v e r a g e n u m - e r o n
#.
2. System utilization
3. %mplied cost
Measured by:
1. Single channel0 constant service time
2. Multiple channel0 e5ponential service time
3. Multiple priority service0 e5ponential service
time
• Magazines in waiting rooms
• *dvertise other goods6services
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