This preview shows pages 1–2. Sign up to view the full content.
Chapter 15: ShortTerm Scheduling
Three Main Methods
(A)
Assignment Method
1.
Create zero opportunity costs by repeatedly subtracting the lowest costs from
each row and column
2.
Draw the minimum number of vertical and horizontal lines necessary to
cover all the zeros in the table. If the number of lines equals either the
number of rows or the number of columns, proceed to step 4. Otherwise
proceed to step 3.
3.
Subtract the smallest number not covered by a line from all other uncovered
numbers. Add the same number to any number at the intersection of two
lines. Return to step 2.
4.
Optimal assignments are at zero locations in the table. Select one, draw lines
through the row and column involved, and continue to the next assignment.
(B)
Johnson’s Rule
1.
List all jobs and times for each work center
2.
Choose the job with the shortest activity time. If that time is in the first work
center, schedule the job first. If it is in the second work center, schedule the
job last.
3.
Once a job is scheduled, it is eliminated from the list
4.
Repeat steps 2 and 3 working toward the center of the sequence
(C)
Scheduling Service Employees With Cyclical Scheduling
1.
Determine the staffing requirements
2.
Identify two consecutive days with the lowest total requirements and assign
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
 Fall '09
 shang

Click to edit the document details