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Exam 15: Scheduling for the Short-Term

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Question 1

Multiple Choice

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What is a scheduling technique used to achieve an optimum,one-to-one matching of tasks and resources?

A) the assignment method
B) Johnson's rule
C) the CDS algorithm
D) the appointment method
E) the reservation method

F) None of the above
G) A) and B)

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Question 2

Multiple Choice

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Which of the following is NOT required to be known in order to schedule process-focused facilities?

A) the sequence of work
B) which workers are assigned to each work center
C) the time required for each item
D) the capacity of each work center
E) the availability of each work center

F) A) and E)
G) C) and E)

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B

Question 3

Multiple Choice

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Three jobs are to be assigned to three machines.Cost for each job-machine combination appears in the table below.Perform the first two steps of the assignment method (subtract the smallest number in each row and subtract the smallest number in each column;then cover with straight lines) .At this point in the problem-solving process:

Briefly describe how "the unexpected" makes short-term scheduling at Delta Airlines a challenge.Also describe how Delta meets that challenge,and achieves competitive advantage through short-term scheduling.

Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before Machine 2).The processing times are given in the table below. a.What is the optimal sequence? b.What is the total flow time for this sequence?

What is input-output control?

Five jobs are waiting for processing through two work centers.Their processing time (in minutes) at each work center is contained in the table below.Each job requires work center Alpha before work center Beta.According to Johnson's rule,what is the optimum sequence of jobs and the minimum time for completion of all jobs?

The short-term scheduling activity called "loading":

There are two jobs to be assigned to two workers.The profit for worker A on job 1 is $5 and on job 2 is $8.The profit for worker B on job 1 is $10 and on job 2 is $12.How should the work be divided using the assignment method?

What makes short-term scheduling of strategic importance?

Which of the following is NOT a key direct benefit from effective internal or external scheduling?

________ is the assignment of jobs to work or processing centers.

The following jobs are waiting to be processed at your work center,which cleans valve body castings.Job numbers are assigned sequentially upon arrival in the facility (a missing number means that job does not require your work center).All dates are specified as days from today. a.In what sequence should the jobs be processed according to the FCFS scheduling rule? b.In what sequence should the jobs be processed according to the EDD scheduling rule? c.In what sequence should the jobs be processed according to the SPT scheduling rule? d.In what sequence should the jobs be processed according to the LPT scheduling rule? e.In what sequence should the jobs be processed according to the critical ratio scheduling rule?

Five jobs are waiting to be processed.Their processing times and due dates are given below.Using the shortest processing time dispatching rule,in which order should the jobs be processed?

In what five ways does the problem of scheduling service systems differ from that of scheduling manufacturing systems?

Johnson's rule sequences a set of jobs through two different machines or work centers in the same order.

What does the use of the shortest processing time sequencing rule generally produce?

Short-term schedules are prepared:

Forward scheduling:

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the longest processing time rule,what is the lateness of job A?