Question 1

The production database containing information about each of the components that a firm produces or purchases is the

Accepted Answer

A)  routing file 
B)  work-center master file 
C)  control file 
D)  item master file 
E)  none of the above 
A)  routing file 
B)  work-center master file 
C)  control file 
D)  item master file 
E)  none of the above D

Question 2

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 C

Question 3

The operations manager of a body and paint shop has five cars to schedule for repair. He would like to minimize the throughput time (makespan) to complete all work on these cars. Each car requires body work prior to painting. The estimates of the times required to do the body and paint work on each are as follows:
 $$\begin{array} { | c | c | c | } 
\hline \text { Car } & \begin{array} { c } 
\text { Body Work } \
\text { (Hours) }
\end{array} & \text { Paint (Hours) } \
\hline \text { A } & 8 & 7 \
\hline \text { B } & 9 & 4 \
\hline \text { C } & 7 & 9 \
\hline \text { D } & 3 & 4 \
\hline \text { E } & 12 & 5 \
\hline
\end{array}$$ 
a. Chart the progress of these five jobs through the two centers on the basis of the arbitrary order
A→B→C→D→E.
b. After how many hours will all jobs be completed?
 $$\begin{array} { | l | l | l | l | l | l | l | l | l | l | l | } 
\hline \text { Body Work } & & & & & & & & & & \
\hline \text { Paint } & & & & & & & & & & \
\hline & 5 & 10 & 15 & 20 & 25 & 30 & 35 & 40 & 45 & 50 \
\hline
\end{array}$$ 
c. Use Johnson's rule to sequence these five jobs for minimum total duration. Show your work in
determining the job sequence.
d. The optimal sequence is __________.
e. Chart the progress of the five jobs in this optimal sequence.
f. After how many hours will all jobs be completed?

Accepted Answer

(a,b) Arbitrary order:
   
(c,d) The sequence of jobs is Car D, Car C, Car A, Car E, Car B. Makespan = 43 as per the POM for Windows solution below.
   
(c) Johnson's method sequence of steps
   
(e,f)

Question 4

Finite capacity scheduling allows virtually instantaneous changes by operators, which is the technique's primary advantage over rule-based scheduling.

Accepted Answer

A) True 
 B)False

Question 5

Which critical ratio value implies that a job is already late?

Accepted Answer

A)  more than 100 
B)  1 
C)  less than 1 
D)  10 
E)  none of the above 
A)  more than 100 
B)  1 
C)  less than 1 
D)  10 
E)  none of the above

Question 6

Briefly describe how "the unexpected" makes short-term scheduling at Delta Airlines a challenge. Also describe how Delta meets that challenge, and achieves competitive advantage through short-term scheduling.

Accepted Answer

The unexpected refers to delays and canc

Question 7

Five welding jobs are waiting to be processed. Their processing times and due dates are given below. Using the critical ratio dispatching rule, in which order should the jobs be processed? All dates are specified as days from Today.
$$\begin{array} { | c | c | c | } 
\hline \text { Job } & \begin{array} { c } 
\text { Processing } \
\text { Time (days) }
\end{array} & \begin{array} { c } 
\text { Job due date } \
\text { (days) }
\end{array} \
\hline \text { A } & 4 & 7 \
\hline \text { B } & 2 & 4 \
\hline \text { C } & 8 & 11 \
\hline \text { D } & 3 & 5 \
\hline \text { E } & 5 & 11 \
\hline
\end{array}$$

Accepted Answer

A)  B, D, A, E, C 
B)  C, D, A, B, E 
C)  C, E, A, D, B 
D)  E, B, A, D, C 
E)  none of the above 
A)  B, D, A, E, C 
B)  C, D, A, B, E 
C)  C, E, A, D, B 
D)  E, B, A, D, C 
E)  none of the above

Question 8

Some firms have developed arrangements to literally "swap" employees with each other during their respective peak demand times.

Accepted Answer

A) True 
 B)False

Question 9

Using LPT priority would result in what sequence for Jobs A, B, C, and D if their process times are 4, 6, 5, 2 respectively?

Accepted Answer

A)  ABCD 
B)  DCBA 
C)  DACB 
D)  DABC 
E)  none of the above 
A)  ABCD 
B)  DCBA 
C)  DACB 
D)  DABC 
E)  none of the above

Question 10

Earliest due date is a shop floor dispatching (sequencing) rule that relates the time available to complete a job to the amount of work left to be completed.

Accepted Answer

A) True 
 B)False

Question 11

At Morgan's Transformer Rebuilding, five jobs are ready now for dispatching to a machine center. The processing times and due dates for the jobs are given below. Use earliest due date to sequence the jobs, and calculate the average completion time, the average job lateness, and the average number of jobs in the machine center.
 $$\begin{array} { | c | c | c | } 
\hline \text { Job } & \text { Work Time (days) } & \text { Due Date (days) } \
\hline \text { A } & 15 & 38 \
\hline \text { B } & 13 & 28 \
\hline \text { C } & 7 & 20 \
\hline \text { D } & 18 & 50 \
\hline \text { E } & 9 & 15 \
\hline
\end{array}$$

Accepted Answer

The EDD sequence is E-C-B-A-D.

Question 12

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

Accepted Answer

Forward scheduling starts the

Question 13

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, 8ᵗʰ, 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=10/7=1.43
B=13/12=1.08
C=8/7

Question 14

Use of the shortest processing time sequencing rule generally results in

Accepted Answer

A)  maximum average lateness 
B)  maximum utilization 
C)  maximum effectiveness 
D)  minimum average flow time 
E)  B and D 
A)  maximum average lateness 
B)  maximum utilization 
C)  maximum effectiveness 
D)  minimum average flow time 
E)  B and D

Question 15

One criterion for developing effective schedules is minimizing completion time.

Accepted Answer

A) True 
 B)False

Question 16

Machines A, B, C, and D have been in use for several years, while machine E is new. The following table provides data on the value 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?
c. Which machine should be retired (i.e., gets no assignment)?
d. If they do retire one machine, will they be as profitable without it as with it?
 Explain.
 $\quad\quad\quad\quad\quad\text { Machine }$
$\begin{array}{l|l|l|l|l|l}
\hline \text { Tob } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } \
1 & 27 & 29 & 28 & 30 & 40 \
2 & 30 & 32 & 31 & 34 & 46 \
3 & 33 & 25 & 29 & 26 & 37 \
4 & 29 & 31 & 24 & 28 & 28
\end{array}$

Accepted Answer

NOTE: students need to create an opportu

Question 17

What is the assignment method?

Accepted Answer

The assignment method is a spe

Question 18

What are the criteria by which we evaluate sequencing rules?

Accepted Answer

There are a number of criteria for evalu

Question 19

Sequencing (or dispatching)

Accepted Answer

A)  assigns dates to specific jobs or operations steps 
B)  assigns jobs to work centers 
C)  specifies the order in which jobs should be done at each center 
D)  assigns workers to jobs 
E)  assigns workers to machines 
A)  assigns dates to specific jobs or operations steps 
B)  assigns jobs to work centers 
C)  specifies the order in which jobs should be done at each center 
D)  assigns workers to jobs 
E)  assigns workers to machines

Question 20

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.
 $$\begin{array} { | c | c | c | c | c | c | c | } 
\hline \text { Sunday } & \text { Monday } & \text { Tuesday } & \text { Wednesday } & \text { Thursday } & \text { Friday } & \text { Saturday } \
\hline 3 & 4 & 2 & 2 & 3 & 6 & 4 \
\hline
\end{array}$$ 
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?

Accepted Answer

@#IMG-DLM& Days off are shaded. Seven full-time RN

The production database containing information about each of the components that a firm produces or purchases is the

The assignment method is

Finite capacity scheduling allows virtually instantaneous changes by operators, which is the technique's primary advantage over rule-based scheduling.

Which critical ratio value implies that a job is already late?

Briefly describe how "the unexpected" makes short-term scheduling at Delta Airlines a challenge. Also describe how Delta meets that challenge, and achieves competitive advantage through short-term scheduling.

Some firms have developed arrangements to literally "swap" employees with each other during their respective peak demand times.

Using LPT priority would result in what sequence for Jobs A, B, C, and D if their process times are 4, 6, 5, 2 respectively?

Earliest due date is a shop floor dispatching (sequencing) rule that relates the time available to complete a job to the amount of work left to be completed.

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

Use of the shortest processing time sequencing rule generally results in

One criterion for developing effective schedules is minimizing completion time.

What is the assignment method?

What are the criteria by which we evaluate sequencing rules?

Sequencing (or dispatching)

Operations and Productivity

Operations Strategy in a Global Environment

Project Management

Forecasting

Design of Goods and Services

Managing Quality

Statistical Process Control

Process Strategy

Capacity and Constraint Management

Location Strategies

Layout Strategies

Human Resources, Job Design, and Work Measurement

Supply-Chain Management

Outsourcing as a Supply-Chain Strategy

Inventory Management

Aggregate Planning

Material Requirements Planning MRP and ERP

Just-In-Time and Lean Options

Maintenance and Reliability

Decision-Making Tools

Linear Programming

Transportation Models

Waiting-Line Models

Learning Curves

Simulation

Filters

Exam 18: Short-Term Scheduling

The production database containing information about each of the components that a firm produces or purchases is the

The assignment method is

Finite capacity scheduling allows virtually instantaneous changes by operators, which is the technique's primary advantage over rule-based scheduling.

Which critical ratio value implies that a job is already late?

Briefly describe how "the unexpected" makes short-term scheduling at Delta Airlines a challenge. Also describe how Delta meets that challenge, and achieves competitive advantage through short-term scheduling.

Some firms have developed arrangements to literally "swap" employees with each other during their respective peak demand times.

Using LPT priority would result in what sequence for Jobs A, B, C, and D if their process times are 4, 6, 5, 2 respectively?

Earliest due date is a shop floor dispatching (sequencing) rule that relates the time available to complete a job to the amount of work left to be completed.

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

Use of the shortest processing time sequencing rule generally results in

One criterion for developing effective schedules is minimizing completion time.

What is the assignment method?

What are the criteria by which we evaluate sequencing rules?

Sequencing (or dispatching)

Operations and Productivity

Operations Strategy in a Global Environment

Project Management

Forecasting

Design of Goods and Services

Managing Quality

Statistical Process Control

Process Strategy

Capacity and Constraint Management

Location Strategies

Layout Strategies

Human Resources, Job Design, and Work Measurement

Supply-Chain Management

Outsourcing as a Supply-Chain Strategy

Inventory Management

Aggregate Planning

Material Requirements Planning MRP and ERP

Just-In-Time and Lean Options

Maintenance and Reliability

Decision-Making Tools

Linear Programming

Transportation Models

Waiting-Line Models

Learning Curves

Simulation

Filters