Exam 25: Operations Scheduling

Table J.9 There are three jobs available for processing at Workstation 1.They just arrived at Workstation 1,at the end of Day 0. -Using the information in Table J.9 and the slack per remaining operation (S/RO)rule,what is the average days past due?

Table J.18 -Use the information in the table and sequence the jobs using the EDD rule.What is the average past due?

Determining a production sequence for a group of jobs in a two-station flow shop to minimize the makespan has the advantage of:

Table J.6 All of the following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed. -Use the information in Table J.6.What is the average flow time at Workstation A for the critical ratio rule?

Utilization is the degree to which equipment,space,or the workforce is currently being used,measured as the ratio of average output rate to the maximum capacity.

Why is makespan an important performance measure?

Table J.7 The following four jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed. -Using the information in Table J.7 and the S/RO rule,what is the average flow time at Workstation A?

________ are a set of priority rules that apply to more than one aspect of a job.

Table J.11 Work center Q45 has four jobs that just arrived (the start of Day 1)to be processed,as shown in the following table.Assume the shop works eight hours per day. -Using the information in Table J.11 and the slack per remaining operations ratio (S/RO)rule,what is the average past due?

Table J.5 The following three jobs just arrived (end of hour 0)at Workstation A.They are the only ones waiting to be processed. -Use the information in Table J.5.The average past due using the ratio (CR)rule,is:

An appropriate objective for a manufacturing firm is to maximize total inventory.

________ is the amount of time by which a job missed its due date.

When using the critical ratio (CR)priority sequencing rule:

Table J.9 There are three jobs available for processing at Workstation 1.They just arrived at Workstation 1,at the end of Day 0. -Using the information in Table J.9 and the slack per remaining operations (S/RO)rule,what should be the sequence of jobs processed at Workstation 1?

________ is a priority sequencing rule that specifies that the job that arrived at the workstation first is given the highest priority.

Table J.18 -Use the information in Table J.18 and sequence the jobs using the SPT rule.What is the average flow time?

Table J.11 Work center Q45 has four jobs that just arrived (the start of Day 1)to be processed,as shown in the following table.Assume the shop works eight hours per day. -Using the information in Table J.11 and the slack per remaining operations (S/RO)rule,what should be the sequence of jobs processed at Q45?

Table J.12 The Feast Janice prepares a medley of pastas for her brother Tony.Each of the pastas must first be rolled and then formed (or in some cases stuffed)before cooking.The required time on each machine in minutes is indicated in the table. -Janice decides to minimize the average flow time of the pastas using Johnson's rule.How much idle time does the Roller/Former machine experience?

Use the information in the preceding table and sequence the six jobs using FCFS,SPT,and EDD.Calculate the average flow times,average early times,and average past due.

Sequencing jobs does not affect tardiness,because processing times are unchanged with different sequences.