The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM4200 Homework 3
Due on 20 Nov (THU), 5pm (Please drop your HW in the collection box outside Room 5558)
1. (50 points) You are given the following information on the departments. The available
space is 300 ft x 240 ft.
Department
name
A: Receiving
B: M
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM 4200
Design of Logistics and Manufacturing Systems
Xuan QIU
Solution to Homework One
Problem 1
(a) Follow the procedure in Facility Location Model (I) Page 10 to solve this Single
facility rectilinear minisum problem.
Building
B
A
C
E
D
F
ai
wi
1 1/1
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM4200
Fall 2016
Solution to Homework 2
Problem 1
For the machinepart matrix shown below, form cells using the direct clustering algorithm, and if
conflicts exist, propose alternative approaches for resolving the conflicts.
Part #
1
2
3
4
5
6
7
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
CALD
Comments on LOGIC
Objective
Importance of Material Handling
Limitation
CRAFT
Limitation
After AF exchange
Storage Layout Planning
( C 1C 2 ) xi+Cr
i
i
fi
xi+C 2 pi
vi
i
Vol = L*W*H
Fi = Q*Volvi (ref to above)
Labour efficiency = pi/sqrt(fi)
LOGIC
T
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
Goal: Minimize total cost = waiting cost + capacity cost
Why plan facilities?
Importance of Facilities Planning
Examples of facility systems
Structural systems, enclosure systems,
atmospheric systems, electrical and lighting
systems, communication system,
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
Solutions to homework 3
1. (a) lets assume the height is 300ft and the width is 240ft. Set the point at the left top corner
as the origin point, the horizontal direction as X direction and the vertical direction as Y
direction. After the calculation accor
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
1. (15) Let x1, x2, x3 be the number of machines used for cutting, milling and
inspection, respectively. Since the scraped rate for cutting is 2%, milling 1% and
only 95% of the products that are not scraped can pass the inspection operation, 1000
(=922/(
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
1. (a) lets assume the height of rectangular is 300ft and the width is 240ft. Set the point of
the left corners the origin point, the horizontal direction as X direction and the vertical
direction as Y direction. After the calculation according to the ide
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
Solutions to homework 2
1.
Let x1, x2, x3, x4 is the number of machines used for cutting, deburing, welding
and inspection, respectively.
Therefore, we have x1=2, x2=1, x3=5, x4=3.
2. Xi is the number of employees beginning work on day i,
By using Excel S
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM 4200 Homework 1 (Solution)
1.
a: numbers of guests check in every day: Nl=200*4/5=160, Nb=200*1/5=40, then
we can calculate the number of leisure and business guests on any given day
Nl=160*4=640, Nb=40*3=120. Thus, on any given day, there are 640 le
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM4200 Homework 3
Due on 2 December 2011
(Submit to Yan @ Room 3208A by 5pm on the day. All late submission will not be accepted, since
homework solution will be posted right after the deadline, so that you can prepare for the examination.)
1. You are g
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM4200 Homework 2
Due on 23 Oct (THU), 5pm (Please drop your HW in the collection box outside Room 5558)
1. (15 points) A certain part needs 3 operations to produce: cutting, milling, and
inspection. The scrape rate for cutting is 2%, the scrap rate for
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
Solutions of homework 1
1. a) numbers of guests check in every day: Nl=135*2/3=90, Nb=135*1/3=45
then we can calculate the number of leisure and business guests on any given day
Nl=90*1.8=162, Nb=45*3.6=162
Thus, on any given day, there are 162 leisure gu
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM 4200 Homework 1
Due on 25 Sept (THU), 5pm (Please drop your HW in the collection box outside Room 5558)
1. (10 points) The Comfort Hotel is an upscale independent hotel that caters to both business and leisure
travelers. On average, 4/5 of the guests
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM4200 Homework 2
Due on 4 November 2011 (Submit to Yan @ Room 3208A by 5pm on the day)
1.
A certain part needs 4 operations to produce: cutting, deburing, welding and inspection.
The scrape rates for the first three operations are zero, but only 95% of
The Hong Kong University of Science and Technology
Design of Logistics and Manufacturing Systems
IELM 4200

Fall 2015
IELM 4200 Homework 1
Due on 30 September 2011 (Submit to Yan @ Room 3208A)
1. The Comfort Hotel is an upscale independent hotel that caters to both business and
leisure travelers. On average, onethird of the guests checking in each day are leisure
travel