Exam 18: Short-Term Scheduling

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 Alpha before work center Beta. According to Johnson's rule, what is the optimum sequence of jobs and the minimum time for completion of all jobs? Job Alpha Beta R 20 10 25 35 50 20 15 35 55 75

The most appropriate sequencing rule to use if the goal is to dynamically track the progress of jobs and establish relative priority on a common basis is

Lockport Marine Services, Inc. wishes to assign a set of jobs to a set of machines. The following table provides data on the cost of production of each job when performed on a specific machine. a. Determine the set of assignments that maximizes production value. b. What is the total production value of your assignments? $\quad\quad\quad\quad\quad\text { Machine }$ Tob A B C D 1 27 29 28 30 2 30 29 27 26 3 31 25 29 26 4 29 31 25 28

If an assignment problem consists of 5 workers and 4 projects,

The constant work-in-process (ConWIP) card aids input-output control by limiting the amount of work in a work center.

__________ means frequent, high-quality, small lot sizes that contribute to just-in-time production.

A recent advance in short-term scheduling that makes use of expert systems and simulation in solving dynamic scheduling problems is

Which scheduling technique should be employed when due dates are important for a job order?

The work-center master file contains data such as capacity and efficiency.

In manufacturing scheduling, physical inventories of goods can buffer variations in demand, but service scheduling normally lacks that buffer because services are generally consumed at the same time they are delivered.

Which of the following is nota key benefit from effective scheduling?

Which of the following dispatching rules tends to minimize job flow time?

Which of the following is not an effectiveness criterion for scheduling?

Flow time represents the time

Which of the following dispatching rules ordinarily gives the best results when the criterion is lowest time for completion of the full sequence of jobs?

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

In retail outlets, customers are usually processed on a first come, first served basis. Why? Is the express lane in the supermarket an exception? Craft a sequencing rule to explain express lane behavior.

Which of the following files tracks work order progress?

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 __________.

Which file contains important information regarding an item's flow through the shop?