Biomedical Engineering Reference
In-Depth Information
area. of. the. floor. plan. of. the. IC. factory.. These. invalid. coordinates. were.
then. replaced. by. some. random. values;. for. example,. the.
y
. coordinate. was.
changed. from. 3.989742. to. 19.247854,. which. was. randomly. generated,. as.
shown. in.
Figure 8.2
..
Similarly,. in. case. (ii),. repeated.
x-y
. coordinates,. say.
(31.583469,.19.247854),.were.replaced.by.other.randomly.generated.coordi-
nates,.say.(20.371952,.17.671589),.as.only.one.base.station.can.be.installed.in.
a.particular.location.
8.7 ResultsandDiscussion
Without.complicating.the.calculation.and.obscuring.the.essence.of.the.pro-
posed.design.approach,.the.WLAN.design.was.based.on.a.two-dimensional.
loor.plan.of.the.IC.factory,.as.shown.in
.
Figure 8.3
.[
19]..The.parameters.of.the.
WLAN.and.multiobjective.evolutionary.algorithms.(MOEAs),.including.the.
MOGA. (multiobjective. genetic. algorithm),. NPGA2. (niched. Pareto. genetic.
algorithm. 2),. NSGA2. (nondominated. sorting. genetic. algorithm. 2),. SPEA2.
(strength.Pareto.evolutionary.algorithm.2),.PAES.(Pareto.archived.evolution.
strategy),.MICROGA.(microgenetic.algorithm),.and.JG,.used.in.the.study.are.
shown. in.
Tables 8.2.
and
. 8.3
,
. respectively.. Two. scenarios. were. deined;. the.
A/C
Toilet
Shipping
DG Store
Temp
Test
Toilet
Testing
IOC
Compressor
A/C
A/C
Manager
Conference
Room
HRO
Solder
Dip
Marketing
Reception
Lot Handling
QA
Production
Supervisor
Test
Engr
Library
Maintenance
Changing
room
Power
Room
Toilet
Manager
DG Store
Toilet
QA Lab
SW
QA
Package
Engr
Product Engr
P.E. Lab
Packing
Vacuum
Pump
Sr.
Engr
Sr.
Engr
A/C
Manager
Manager
Changing Rm
Packing
(tape & reels)
FU Store
Die Bonding
Die
Store
0
2
4
6
8
meter
Figure 8.3
The.floor.plan.of.an.IC.factory..(From.Tang,.K..S.,.Man,.K..F.,.Kwong,.S.,.Wireless.communi-
cation. network. design. in. IC. factory,.
IEEE Transactions on Industrial Electronics
,. 48(2),. 452-459,.
2001.)
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