Exam 26: Operations Scheduling

Table J.3 Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero. -Use the information in Table J.3.According to the shortest processing time rule (SPT),which one of the following sequences is most appropriate?

Table J.12 Consider the following problems in which six jobs must each be processed on two machines starting with machine 1 and then going to machine 2.The following processing times and due dates are in hours. -Use the information in Table J.12.Use Johnson's rule to schedule the jobs.How long does job B wait after finishing on Machine 1 before starting on Machine 2?

________ is the total amount of time required to complete a group of jobs.

Table J.16 Five jobs are currently waiting to be processed.Each job has to go through Machine 1 first and then Machine 2 before it is completed.The processing times (in hours)for the five jobs on each machine are: -Use the information in Table J.16.What is the makespan through both machines if the SPT rule is used to determine the sequence at Machine 1 and the same sequence is also used at Machine 2?

Critical ratio (CR)is a single-dimension priority rule.

Table J.17 A company must take on seven new projects.Each project has a planning stage and a design stage,and the planning stage must be completed before the design stage can begin.Also,two project teams are available to work on these projects: Team 1 works only on planning stages of projects,and Team 2 works only on design stages of projects.The times to complete the project stage,in days,are shown in the following table. -Using the information in Table J.17 and Johnson's rule,what is the sequence of projects that minimizes makespan?

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.

A rule that establishes a job's priority based on one piece of information,such as how long it will take to process or when the job arrived,is a(n)________.

Table J.3 Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero. -Use the information in Table J.3.If the critical ratio rule is used,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 critical ratio rule,what should be the sequence of jobs processed at Q45?

Table J.3 Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero. -Use the information in Table J.3.According to the critical ratio (CR)rule,which one of following sequences is most appropriate?

Consider the following problems in which four jobs must each be processed on two machines starting with Machine A and then going to Machine B.The following processing times are available (in hours): What is the minimum makespan for this group of jobs? Depict it graphically using a Gantt chart.

A(n)________ specializes in low- to medium-volume production using job or batch processes.

The ________ is a priority sequencing rule that is calculated by dividing the time remaining until a job's due date by the total shop time remaining for the job,including the setup,processing,move,and expected waiting times of all remaining operations,including the operation being scheduled.

Table J.15 Consider the following problem in which four jobs that arrived this morning are to be processed on two machines.They start with the cutting machine and then go to the painting machine.The following processing times are available (in hours): -Use the information in Table J.15.What is the makespan through both machines if Johnson's rule is used?

Table J.12 Consider the following problems in which six jobs must each be processed on two machines starting with machine 1 and then going to machine 2.The following processing times and due dates are in hours. -Use the information in Table J.12.What is the minimum makespan for completing all six jobs?

The ________ priority sequencing rule is typically applied in a front-office customer service setting.

Table J.4 Workstation 1 has five jobs waiting to be processed.It is now time 0,and times are expressed in terms of days.All pertinent data are given in the following table. -Using the information in Table J.4 and the SPT rule,what is the average flow time?

Table J.14 Gable Bakery has five cake orders to be processed today.Each cake has to go through the baking and decorating processes.The baking and decorating times are estimated as follows: -Use the information in Table J.14.In what sequence should the orders be processed to minimize the total processing time?

Table J.1 The framing department has six jobs waiting to be processed.It is now time zero.Times are expressed in terms of days. -Using the information in Table J.1 and the FCFS rule,what is the average flow time?