Question 1

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 2

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

Accepted Answer

A) ABCD 
B) DCBA 
C) DACB 
D) DABC 
E) BCAD 
A) ABCD 
B) DCBA 
C) DACB 
D) DABC 
E) BCAD

Question 3

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 minimizes production cost.
(b)What is the total production cost of your assignments?

Accepted Answer

(a)The optimal set of assignme

Question 4

A firm that specializes in desktop publishing for local charities has agreed to take on the following jobs.The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule.All dates are specified as days from today.
   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?

Accepted Answer

(a)The table of results appears below.A

Question 5

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 6

________ determines the order in which jobs should be done at each work center.

Accepted Answer

The answer of ________ determines the order in which jobs...

Question 7

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?

Accepted Answer

(a)A summary of calculations appears in

Question 8

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

Accepted Answer

A) one worker will not get a project assignment. 
B) one project will be assigned two workers. 
C) the fifth worker will split time among the four projects. 
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 project will be assigned two workers. 
C) the fifth worker will split time among the four projects. 
D) one project will not get a worker assigned. 
E) The problem cannot be solved by assignment method.

Question 9

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.

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) B,D,A,C,E 
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) B,D,A,C,E

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

A Gantt load chart shows the loading and idle time of several departments,machines,or facilities.

Accepted Answer

A) True 
 B)False

Question 12

The assignment method provides an optimum,one-to-one assignment of jobs to resources.

Accepted Answer

A) True 
 B)False

Question 13

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 14

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

Accepted Answer

Forward scheduling starts the

Question 15

Short-term scheduling is important to efficiency and to cost reduction,but its impact is not of strategic importance.

Accepted Answer

A) True 
 B)False

Question 16

________ uses computerized short-term scheduling to overcome the disadvantages of rule-based systems by providing the user with interactive computing and graphical output.

Accepted Answer

Finite cap

Question 17

If job 5 takes 3,4 or 5 hours to be completed by workers A,B,and C,respectively,what would the row values for job 5 be after performing Step 1A of the assignment method?

Accepted Answer

A) 3,4,5 
B) 8,9,10 
C) 0,1,2 
D) 6,7,8 
E) 1,4/3,5/3 
A) 3,4,5 
B) 8,9,10 
C) 0,1,2 
D) 6,7,8 
E) 1,4/3,5/3

Question 18

Orders are processed in the sequence in which they arrive if (the)________ rule sequences the jobs.

Accepted Answer

A) earliest due date 
B) slack time remaining 
C) first come,first served 
D) critical ratio 
E) Johnson's 
A) earliest due date 
B) slack time remaining 
C) first come,first served 
D) critical ratio 
E) Johnson's

Question 19

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 B is divided into jobs B1 and B2,each with a body work time of 4.5 hours and a paint time of 2 hours.How much is makespan reduced by this splitting of B?

Accepted Answer

B1 could start on paint at time=34.5 (1/

Question 20

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)?

Accepted Answer

NOTE: students need to create an opportu

Exam 15: Scheduling for the Short-Term

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

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

Sequencing (or dispatching):

________ determines the order in which jobs should be done at each work center.

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

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.

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.

A Gantt load chart shows the loading and idle time of several departments,machines,or facilities.

The assignment method provides an optimum,one-to-one assignment of 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.

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

Short-term scheduling is important to efficiency and to cost reduction,but its impact is not of strategic importance.

________ uses computerized short-term scheduling to overcome the disadvantages of rule-based systems by providing the user with interactive computing and graphical output.

If job 5 takes 3,4 or 5 hours to be completed by workers A,B,and C,respectively,what would the row values for job 5 be after performing Step 1A of the assignment method?

Orders are processed in the sequence in which they arrive if (the)________ rule sequences the jobs.

Operations and Productivity

The Global Environment and Operations Strategy

Managing Projects

Forecasting Demand

Product Design

Quality Management and International Standards

Process Design

Location Decisions

Layout Decisions

Job Design and Work Measurement

Supply Chain Management

Managing Inventory

Aggregate Scheduling

Material Requirements Planning Mrpand Erp

Jit,lean Operations,and the Toyota Production System

Maintenance and Reliability Decisions

Sustainability

Statistical Process Control

Capacity Planning

Supply Chain Modeling

Decision Modeling

Linear Programming Models

Transportation Modeling

Queuing Models

Learning Curves

Modeling with Simulation

Filters