Question 1

What are some limitations of rule-based scheduling systems?

Accepted Answer

Three limitations are (1)Rules need to b

Question 2

The ________ is a special class of linear programming models that involves assigning tasks or jobs to resources.

Accepted Answer

The answer of The ________ is a special class of...

Question 3

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.

Accepted Answer

FCFS is fair.All customers are considere

Question 4

Which of the following considers process capacity when scheduling?

Accepted Answer

A) cap loading 
B) constrained loading 
C) capacitated loading 
D) backward loading 
E) finite loading 
A) cap loading 
B) constrained loading 
C) capacitated loading 
D) backward loading 
E) finite loading

Question 5

With forward scheduling,jobs are scheduled as late as possible within the time allowed by the customer due dates.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

first come

Question 8

The assignment method is:

Accepted Answer

A) a method to highlight overloads in a given work center. 
B) a computerized method of determining appropriate tasks for an operation. 
C) a form of linear programming for optimally assigning tasks or jobs to resources. 
D) the same thing as the Gantt schedule chart. 
E) a method for achieving a balance between forward and backward scheduling. 
A) a method to highlight overloads in a given work center. 
B) a computerized method of determining appropriate tasks for an operation. 
C) a form of linear programming for optimally assigning tasks or jobs to resources. 
D) the same thing as the Gantt schedule chart. 
E) a method for achieving a balance between forward and backward scheduling.

Question 9

If an assignment problem consists of 6 workers and 7 projects:

Accepted Answer

A) one worker will not get a project assignment. 
B) one worker will be assigned two projects. 
C) each worker will contribute work toward the seventh project. 
D) one project will not get a worker assigned. 
E) The problem cannot be solved by assignment method. 
A) one worker will not get a project assignment. 
B) one worker will be assigned two projects. 
C) each worker will contribute work toward the seventh project. 
D) one project will not get a worker assigned. 
E) The problem cannot be solved by assignment method.

Question 10

Forward scheduling:

Accepted Answer

A) begins with a delivery date,then offsets each operation one at a time,in reverse order. 
B) has the same meaning as "finite loading." 
C) is often used in service environments such as catering a banquet or scheduling surgery. 
D) starts the schedule as soon as the job requirements are known. 
E) produces a schedule only if it meets the due date. 
A) begins with a delivery date,then offsets each operation one at a time,in reverse order. 
B) has the same meaning as "finite loading." 
C) is often used in service environments such as catering a banquet or scheduling surgery. 
D) starts the schedule as soon as the job requirements are known. 
E) produces a schedule only if it meets the due date.

Question 11

Identify the major disadvantages of the Gantt load chart.

Accepted Answer

It does not account for production varia

Question 12

There are 5 jobs (A,B,C,D,
E)that need to be completed in a work center.The due dates are the 10th,13th,9th,20th,and 15th respectively with process times of 7,12,7,20,and 10 respectively as well.If today is the 1st of the month calculate the critical ratio for each and use this value to sequence the jobs in the order they should be started.

Accepted Answer

A = (10 - 1)/7 = 1.29
B = (13

Question 13

EDD stands for what?

Accepted Answer

A) earliest due date 
B) earliest design date 
C) earliest detrimental date 
D) earliest decision date 
E) economic date determination 
A) earliest due date 
B) earliest design date 
C) earliest detrimental date 
D) earliest decision date 
E) economic date determination

Question 14

Which of the following is an aid used to monitor jobs in progress?

Accepted Answer

A) a Gantt load chart 
B) the assignment method 
C) a Gantt schedule chart 
D) Johnson's rule 
E) a Gantt progress chart 
A) a Gantt load chart 
B) the assignment method 
C) a Gantt schedule chart 
D) Johnson's rule 
E) a Gantt progress chart

Question 15

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

Accepted Answer

A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days 
A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days

Question 16

A manufacturer has the following jobs waiting on a single work center.The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule.Processing time in 15-minute time blocks and due date for each job are in the table below.
   a)Complete the following table.Show your supporting calculations below.
b)Which dispatching rule has the best score for flow time? for work in process (jobs in the system)? for lateness?
c)Is there ANY sequence that can avoid all lateness? Explain or provide an example.

Accepted Answer

(a)The results appear in the table below

Exam 15: Short-Term Scheduling

What are some limitations of rule-based scheduling systems?

The ________ is a special class of linear programming models that involves assigning tasks or jobs to resources.

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 considers process capacity when scheduling?

With forward scheduling,jobs are scheduled as late as possible within the time allowed by the customer due dates.

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

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

The assignment method is:

If an assignment problem consists of 6 workers and 7 projects:

Forward scheduling:

Identify the major disadvantages of the Gantt load chart.

EDD stands for what?

Which of the following is an aid used to monitor jobs in progress?

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

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