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Exam 15: Short-Term Scheduling

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Question 21

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

A) True
B) False

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Question 22

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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 average jobs in the system is __________.

A) 100 percent; 10.625
B) low; .0941
C) 0.400 or 40 percent; 2.5
D) 0.235 or 23.5 percent; 4.25
E) maximized; minimized

F) B) and E)
G) C) and D)

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Question 23

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Delta uses mathematical short-term scheduling techniques and a high-tech nerve center to manage the rapid rescheduling necessary to cope with weather delays and similar disruptions.

Orders are processed in the sequence in which they arrive if (the) __________ rule sequences the jobs.

What is input-output control?

Which of the following is not a key benefit from effective scheduling?

Forward scheduling is the scheduling of

Earliest due date is a shop floor dispatching (sequencing) rule that relates the time available to complete a job to the amount of work left to be completed.

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 Sigma before work center Delta. According to Johnson's rule, what sequence of jobs will minimize the completion time for all jobs?

The benefits of effective scheduling include lower cost, faster delivery, and dependable delivery.

What makes short-term scheduling of strategic importance?

Identify the types of planning files used in scheduling decisions. Which are used in manual systems, and which are used in automated systems?

The president of a consulting firm wants to minimize the total number of hours it will take to complete four projects for a new client. Accordingly, she has estimated the time it should take for each of her top consultants -- Charlie, Gerald, Johnny, and Rick -- to complete any of the four projects, as follows: a. In how many different ways can she assign these consultants to these projects? b. What is the total number of hours required by the following arbitrary assignment? Charlie→B; Gerald→A; Johnny→D; Rick→C c. What is the optimal assignment of consultants to projects? (Use the assignment method; SHOW YOUR WORK!) d. For the optimal schedule, what is the total number of hours it will take these consultants to complete these projects? e. What is the significance, if any, of the fact that Gerald is the best performer at all four projects?

The word "finite" in finite capacity scheduling refers to the use of finite or limited capacity rather than unlimited capacity.

The production database containing information about each of the components that a firm produces or purchases is the

A work center is interested in limiting work-in-process by not allowing production to start again until the current batch is finished. The best solution most likely involves

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?

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

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

Gantt charts are useful for scheduling jobs, but not for loading them.