T D
Problem 1: Determine the number of cycles per day and the production
quantity per cycle for the following two sets of products to achieve fairly level
production, assume production sequence is:
I.
FGHK
II. ABCDE
1
Dr. Qi Mei @ NUS
T D
Problem 2: Consi

Solution guides to Tutorial 11
Problem 1: Determine the number of cycles per day and the production
quantity per cycle for the following two sets of products to achieve fairly level
production, assume production sequence is:
I. FGHK
II.
Below is one optio

T D
1. Consider the below two-step process: step A has a processing time of 1 minute per
unit, but no setup is required. Step B has a processing time of 0.1 minute per unit,
but a setup time of 9 minutes is required per batch. A buffer with ample inventor

DSC2006 - Operations Management
Module Objectives:
1. Introduce Operations Management ( M)
Concepts, theories, and a set of OM tools
2. Raise awareness and interests in
M
Todays Outline
Recap of Previous Lecture
Products, services, process, OM, add-value,

1
DSC2006 Extra Discussion and Review Exercises
The term production/operations management relates to the management of systems or processes that
create goods and/or provide services. These processes involve the planning, coordination, and execution of
al

DSC2006 Tutorial 8 Exercises
Problem 1: NUS Visitor's Lodge has 150 rooms with standard Queen-size beds and two rates: a full price of
$200 and a discount price of $120. To receive the discount price, a customer must purchase the room at least
two weeks i

T D
Problem 1: Find a better strategy for Example A
Problem 2: Given the following information and
requirements, how many units of part D should be released
in order to meet demand of 400 units of final product P at
the end of week 6? Which week is the be

DSC2006 Solution Guides for Lecture 10 Exercises
Problem 1: Find a better strategy for Example A and below is one and there are others
Period
1
2
3
4
5
6
7
8
9
Total
190
230
260
280
210
170
160
260
180
1,940
210
210
210
210
210
210
210
210
210
1,890
10
Fo

DSC2006 Tutorial 8 Exercises
Problem 1: NUS Visitor's Lodge has 150 rooms with standard Queen-size beds and two rates: a full price of
$200 and a discount price of $120. To receive the discount price, a customer must purchase the room at least
two weeks i

T D
1. After a thorough engineering review, it was discovered that the lower
specification limit LS for a certain dimension could be reduced by 24% with
no ill effect. Once this has been done, is it possible that
. the proportion defective might increase?

DSC2006 Tutorial 6 Exercises
1. The table below contains figures on monthly usage and unit costs for a random sample of 16 items from
list of 2,000 inventory items at a health care center:
Item
K34
K35
K36
M10
M20
Z45
F14
F95
F99
D45
D48
D52
D57
N08
P05
P

DSC2006 Tutorial 8 Exercises
Problem 1: NUS Visitor's Lodge has 150 rooms with standard Queen-size beds and two rates: a full price of
$200 and a discount price of $120. To receive the discount price, a customer must purchase the room at least
two weeks i

DSC2006 Tutorial 6 Exercises solutions
Answer to Problem 1:
Question 1: What is the optimal number of rooms that needs to be protected from sale at a discounted price?
p=$200; w=$120; so,
Cs=$80, Ce=$120, and
CR=80/(80+120)= 40%
From Normal table, z=-0.25

DSC2006 Extra Exercises
1. CaVilla is a luxury resort on Sentosa. Given its enormous popularity among
tourists and local experts community, all of its rooms are booked
throughout the year. There are, on average, 1200 guests in the resort. On
average, gues

DSC2006: Operations Management (M)
Todays Outline
Recap/summary of previous Lecture
MRP
Introduction to Aggregate Planning
1
One subassembly a time
EOQ is inside
MRP is inside
One end product a spreadsheet or more
DSC2006 by Dr. Qi Mei @ NUS Business

DSC2006 Tutorial 7 Exercises
1. Radovilsky Manufacturing Company, in Hayward, California, makes flashing lights for toys. The company
operates its production facility 365 working days per year. It receives orders for about 12,000 flashing
lights per year

T D
1.
Heavenly Mercy Hospital wants to improve the efficiency of its radiology department
and its responsiveness to doctors' needs. Administrators have observed that, every
hour, doctors submit an average of 18 X-ray films (assume Poisson distribution) f

DSC2006 Tutorial 6 Solution Guides
Answer to 1:
ABC Classification System
Class
A
B
C
Dollar Amount
Total
Percent
59,000
60.17%
29,700
30.29%
9,350
9.54%
Clear
Number of Items
Total
Percent
3
18.75%
5
31.25%
8
50.00%
Enter lower limit for dollar amount:
A

DSC26 - perations Management
Todays utline
Introduction to perations Management (M)
Module verview
Dr. Mei Qi ( )
Office: BIZ 2-03-12
Phone: 6516-1335
E-mail: bizqm@nus.edu.sg
Chat Room on IVLE
Discussion Forum
1-1
DSC2006 - OM
DSC3226 - SOM
DSC4211

1) Which of the following is not one of the assumptions of the basic EOQ model?
A) Annual demand requirements are known and constant.
B) Lead time does not vary.
C) Each order is received in a single delivery.
D) Quantity discounts are available.
E) All o

1. A process, which is capacity-constrained, is depicted below:
Station1
Activity Time
10min/unit
Station2
Activity Time
12min/unit
Station3
Activity Time
8min/unit
What is the cycle time? How would the flow rate be related to the cycle time?
2. Clinic Z

DSC26 - perations Management
Module Objectives and Todays Outline
1. Introduce perations Management (M)
Why? What?
2. Introduce some concepts, theories, principles,
and analytic tools in M
What?
3. Raise awareness and interests in M
Bonus
1-1
DSC 2006

Capacity in the presence of Setup Time
Setup Time Reduction is the challenge
Step 1: Milling Machine
Step 2: Assembly process
Setup time = 120 minutes
run time = 2 minutes
No set-up required
run time = 3 minutes
3-5
DSC 2006 by Dr. Mei Qi @ NUS Business S

DSC2006: Operations Management ( M)
Module Objectives:
1.
Introduce Operations Management ( M)
Concepts, theories, and a set of OM tools
2.
Raise awareness and interests in
M
Todays outline
Recap previous lecture
Continue on Managing Quality
Can you speak

Problem 1:
a.
Refer to below table: backorders in period 3 is 50 units, in total 530 units, total profits is $30,510. Level will not be able to meet the
overall total aggregated demand, short of 50 units.
Level employee and output
Period
1
2
3
4
5
6
7
8
9

DSC2006 Solution Guides for Tutorial 9 Exercises
Problem 1:
Please refer to Lecture summary: Aggregate planning, Disaggregation, Master Production Schedule, BOM, MRP
Processing, Lot Sizing, etc.
Problem 2:
Given D = 750 pots/mo. x 12 mo./yr. = 9,000 pots/

DSC2006 Tutorial 5 solutions
1. Refer to Lecture 6 summary
Process H is not centered :
2 LSL 15 14.1
s
USL s 16 15
1.04
3
(3)(.32)
3
(3)(.32)
C pk min.938, 1.04 .93 1.33, so it is not capable
.93 and
Process K is not centered :
s LSL 33 30
USL s 36.5 3

DSC2006 Tutorial 4 solutions
1. Random variable is a variable whose value is subject to
variations due to chance, customers inter-arrival times and
doctors service times are such examples. Sample statistics
such as and are also random variables.
1
Random

Tutorial 3 solutions
1. Given l = 0.87, m = 1/3
then, l/m = 2.61 implies this process is not stable with 1 server
If let m=3 (round up to the next integer), then
Utilization r= l/(mm) (with m=3) =87%
2. Given 1/l=10, 1/l = 0 , 1/m=9, 1/m = 9
Then, CV1/l =