1) A manager has received an analysis of several cities being considered for a new order fulfillment center (warehouse) for Shop at Home Network. The scores (scale is 10 points = best) are contained in the table below.
a. If the manager weights the factors equally, how would the locations be ranked?
b. If transportation costs and operating costs are given weights that are double the weights of the others, should the locations be ranked differently?
|
|
Location
|
|
Factor
|
W
|
X
|
Y
|
Z
|
|
Business services
|
7
|
9
|
5
|
4
|
|
Community services
|
5
|
7
|
6
|
7
|
|
Real estate cost
|
7
|
3
|
8
|
6
|
|
Construction costs
|
8
|
6
|
6
|
5
|
|
Operating costs
|
5
|
4
|
7
|
6
|
|
Business taxes
|
6
|
9
|
6
|
4
|
|
Transportation costs
|
8
|
6
|
7
|
8
|
2) A telecommunications firm is planning to lay fiber optic cable from several community college distance learning sites to a central studio, in such a way that the miles of cable are minimized. Some locations require more than one set of cables (these are the loads). Where should the studio be located to accomplish the objective?
|
College
|
Map Coordinate (x, y)
|
Load
|
|
A
|
(2,10)
|
3
|
|
B
|
(6,8)
|
2
|
|
C
|
(4,9)
|
4
|
|
D
|
(9,5)
|
1
|
|
E
|
(8,1)
|
3
|
|
F
|
(3,2)
|
2
|
|
G
|
(2,6)
|
1
|
3) An assembly line with 11 tasks is to be balanced. The longest task is 2.4 minutes, the shortest task is 0.4 minutes, and the sum of the task times is 18 minutes. The line will operate for 600 minutes per day.
a. Determine the minimum and maximum cycle times.
b. What range of output is theoretically possible for the line?
c. What is the minimum number of stations needed if the maximum output rate is to be sought?
d. What cycle time will provide an output rate of 200 units per day?
4) Brandon's computer shop has hired a consultant to help apply operation management techniques to increase profits. Currently the shop sells most of its computers to a high-end customized online retailer and sales are steady at 250 per month. A single work cell produces the computers. To produce the computer three operations are required. First the parts must be assembled, next software must be installed, and finally the computer must be safely packed and labeled for shipping. These operations take 2 hours, 5 hours, and 1 hour respectively. If there are 6 available work hours each day and the shop operates 20 days per month find:
a. The takt time.
b.The number of workers Brandon should hire.