Exam 14: Short-Term Scheduling

Complete the table; find average lateness, average completion time, and average number of jobs in the system. Assume all durations are in days and that the jobs are processed at the shop in the order that they arrive (A then B then C then D). Today is day 1.

The priority rule that appears fair to customers in service systems is ________.

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:

Which of the following statements regarding scheduling at Alaska Airlines is FALSE?

The short-term scheduling activity called "loading":

________ scheduling begins with the due date and schedules the final operation first and the other job steps in reverse order.

Scheduling optimization systems used in retail stores typically track customer traffic in 1-hour time increments.

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, which job should be scheduled first in the sequence?

In the sequence of decisions that affect scheduling, ________ is (are) the immediate follower(s) of the master schedule (or master production schedule).

What is finite capacity scheduling (FCS)?

There are two jobs to be assigned to two workers. The cost for worker A on job 1 is $5 and on job 2 is $8. The cost for worker B on job 1 is $10 and on job 2 is $12. How should the work be divided using the assignment method?

Jack's Refrigeration Repair is under contract to repair, recondition, and/or refurbish commercial and industrial icemakers from restaurants, seafood processors, and similar organizations. Jack currently has five jobs to be scheduled, shown in the order in which they arrived. (a) Complete the following table. (Show your supporting calculations below). (b) Which dispatching rule has the best score for flow time? (c) Which dispatching rule has the best score for work-in-process (jobs in the system)? (d) Which dispatching rule has the best score for lateness?

Which of the following is TRUE regarding services scheduling?

Given the following chart of jobs assigned with Johnson's rule, suppose that all the jobs (A, B, C, etc) could be evenly divided into two tasks (such as A1 and A2, B1 and B2, etc). Suppose job D is split into two equivalently sized sections, D1 and D2, each with a body work time of 1.5 hours and a paint time of 2 hours (D1 and D2 sum to 3 hours of body work and 4 hours of paint which is equivalent to D). How much is makespan reduced by this splitting of D?

Finite capacity scheduling provides the user with graphical interactive computing, which is the technique's primary advantage over rule-based scheduling.

The emergency room at a hospital estimates the following requirements for registered nurses (RNs) for the late night shift each week. Nurses work four consecutive days, then have off three days. Perform cyclical scheduling on the data. (Note that you must identify three-day patterns of minimum requirements.) How many RNs are required? How much extra capacity is required?

What are four main criteria by which we evaluate sequencing rules?

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

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

Explain, in your own words, how backward scheduling and forward scheduling differ.