Exam 14: Operations Scheduling and Sequencing

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A print shop has four jobs that have to be processed through their only five-color press. They usually use the first come, first served (FCFS) rule of scheduling jobs. However, the customers are waiting in the lobby for these jobs so the shop wants to minimize the average waiting time. They are going to use the shortest processing time rule to do so. Processing times for each job are as follows (assume this is the arrival order): Job A, 30 minutes; Job B, 17 minutes; Job C, 12 minutes; and Job D, 39 minutes. -Using the shortest processing time (SPT) rule to sequence these jobs, the final sequence is_____, if A is the first person to arrive and D is the last.

(Multiple Choice)
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Which of the following is NOT a consideration when designing an appointment system?

(Multiple Choice)
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If the highest priority is to minimize the average job lateness, then the job sequence should begin with those jobs requiring:

(Multiple Choice)
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Indirectly, appointments reduce the cost of providing a service because the service provider is idle less each workday.

(True/False)
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Staff scheduling needs all of the following EXCEPT:

(Multiple Choice)
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Give at least five examples of service organizations (and employee types) where, due to high variability in customer demand, staff-scheduling problems are prevalent.

(Essay)
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The following five jobs, along with their processing time and due dates, are given below. Processing Days Due From Today A 8 12 B 4 9 C 3 6 D 7 7 E 5 20 -Using the earliest due date (EDD) rule, the average lateness for the five jobs is _____.

(Multiple Choice)
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In a two-resource sequencing problem:

(Multiple Choice)
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The table below includes processing times and due dates for five jobs. Processing Days Due Job Time (days) From Today A 16 24 B 23 30 C 22 40 D 8 28 E 10 18 -Using the shortest processing time (SPT) rule, the average flow time for the five jobs is _____.

(Multiple Choice)
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A restaurant needs the following number of wait staff to serve its evening guests. Day: M Tu W Th F Sa Su Minimum Number of Wait Staff Needed: 5 2 1 4 6 7 2 How many employees are needed so that each has two consecutive days off? Construct a work schedule for these employees.

(Essay)
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The chief disadvantage of the shortest processing time (SPT) rule is:

(Multiple Choice)
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The earliest due date (EDD) rule minimizes the maximum of jobs past due but doesn't perform well on average flow time, work-in-process (WIP) inventory, or resource utilization.

(True/False)
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A movie theater requires the following minimum number of employees, each of whom is required to have two consecutive days off. Day: M Tu W Th F Sa Su Minimum Personnel Required: 1 1 3 2 5 4 3 -Using staff scheduling method, the most overstaffed day is _____.

(Multiple Choice)
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Differentiate between scheduling and sequencing.

(Essay)
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Since all jobs eventually get done, job sequencing has no effect on resource utilization.

(True/False)
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Explain the three categories of criteria used to evaluate job sequencing performance. For each category, provide two example measures.

(Essay)
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The time needed to process a given set of jobs is called:

(Multiple Choice)
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Gantt charts can be used to:

(Multiple Choice)
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A print shop has four jobs that have to be processed through their only five-color press. They usually use the first come, first served (FCFS) rule of scheduling jobs. However, the customers are waiting in the lobby for these jobs so the shop wants to minimize the average waiting time. They are going to use the shortest processing time rule to do so. Processing times for each job are as follows (assume this is the arrival order): Job A, 30 minutes; Job B, 17 minutes; Job C, 12 minutes; and Job D, 39 minutes. -Using the first come, first served (FCFS) rule to sequence these jobs, the average waiting (flow) time is _____.

(Multiple Choice)
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