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Engineering Management (Network) 26-Dec-2019 (Work Environment Design…
Engineering Management
(Network)
26-Dec-2019
Comparison
AON VS. AOA
AON
Advantage
No dummy
Easy to draw
Activities emphasis is easily to
understand
Disadvantage
It could be Error
if the network is not available
(Computer)
More difficult when
dependencies are numerous
AOA
Advantage
Keys events can
easily be flagged
Simplified by activity/event
numbering scheme
Easier to draw
if dependencies are intense
Disadvantage
Have dummy
Emphasis on event can
detract from activities.
PERT
Time Estimate
Optimistic
Generally shortest time
to complete.
Most likely
ฺBase on experience of performing
in past (Data from expert)
Pessimistic
The longest time that
might require.
PERT formula
Expect time = (to+4(tm)+tp)/6
Standard Deviation = (tp-to)^2/36
Variance
Sigma^2= All value critical path
of variance
Sigma = SQRT(Sigma)
Z=(Probability will finish - Expect time)/Sigma
(Compare in table and multiply 100)
Work Environment
Design
Working condition
Poor Working Condition can
undermine all good intention
Uncomfortable will
reduce productivity
Maslow's Hierarchy of
Needs
Safety
Belongingness
Physiological
Esteem
Self actualization
The value of good
environment
Better work
performance
Reduce turn over
