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Exam 15: Scheduling for the Short-Term

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Question 31

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One criterion for developing effective schedules is minimizing completion time.

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B) False

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Question 32

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An approach to sequencing that can handle the situation where jobs must pass through two or more work centers in a fixed sequence is ________.

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Question 33

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What is a method of input-output control that uses a system of cards to limit the amount of work at a work center and also to control lead time and monitor backlog?

Identify some scheduling optimization systems that are used at retail stores.Describe what these systems do.

Eight jobs have been sequenced at a single work center.Total processing time for the eight jobs is 34 hours,and total flow time for the sequence is 85 hours.For this schedule,utilization is ________ and the average number of jobs in the system is ________.

________ scheduling begins with the due date and schedules the final operation first and the other job steps in reverse order.

The emergency room at a hospital estimates the following requirements for registered nurses (RNs)for the late night shift each week.Nurses work four consecutive days,then have off three days. Perform cyclical scheduling on the data.(Note that you must identify three-day patterns of minimum requirements).How many RNs are required? How much extra capacity is required?

What is the assignment method?

What are some limitations of rule-based scheduling systems?

Bob Dresser operates a major appliance warranty service center.His operation has two check stations that are required at the end of every repair task performed by his appliance repair staff.These are the Functionality Review (FR)and the Overall Scan (OS).The FR must be performed successfully before the OS is begun.On Friday morning,six repair jobs are completed,awaiting these two inspection activities.Processing times are given in minutes. a.What is the optimal sequence of jobs for the objective of minimizing the total flow time? b.Show your work,and document the sequence. c.Chart the solution to this problem. d.What jobs are being processed at time period 90? e.What is the total flow time of this problem?

There are 5 jobs (A,B,C,D, E)that need to be completed in a work center.The due dates are the 10th,13th,9th,20th,and 15th respectively with process times of 7,12,7,20,and 10 respectively as well.If today is the 1st of the month calculate the critical ratio for each and use this value to sequence the jobs in the order they should be started.

Which of the following is an advantage of the FCFS dispatching rule when used in services?

At Morgan's Transformer Rebuilding,five jobs are ready now for dispatching to a machine center.The processing times and due dates for the jobs are given below.Use earliest due date to sequence the jobs,and calculate the average completion time,the average job lateness,and the average number of jobs in the machine center.

What is the priority rule that sequences jobs using the smallest ratio of due date from today to processing time?

What is the objective of scheduling?

In the sequence of decisions that affect scheduling,________ is (are)the immediate follower(s)of the master schedule (or master production schedule).

The assignment method is:

Scheduling optimization systems used in retail stores typically track customer traffic in 4-hour time increments.

Given the table below,find the sequence for the following priority rules: (a)SPT (b)EDD (c)LPT

Because of the significance of labor in the scheduling of services,behavioral and social issues,wage and hour laws,and union contracts all complicate the scheduling process.