Lecture8_Nov07_2005

Lecture8_Nov07_2005 - EMP5100 - Introduction to Engineering...

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EMP5100 - Introduction to Engineering Management Lecture 8 7. Methods to Manage Engineering Projects (cont.) The lowest time, a , is called the optimistic time; the highest one, b , is pessimistic; and m the one in between is called the most likely. The expected time t e is then given by a weighted average. t e = (a + 4*m + b)/6 Beta distribution 1. C.E. Clark, The PERT Model for… Example : An optimistic estimate = 0.5 hours A most likely estimate = 1.5 hours A pessimistic estimate = 6.5 hours t e = 1/6(0.5 + 4*1.5 + 6.5) ~= 2.2 hours The essential terms associated with the PERT and CPM techniques are: a) Event or node : an unambiguous point in time in the life of a project. (circle) b) Activity : technological operation which consumes time, money and manpower. Each activity is characterized by a specific initial event and terminal event (arrow) c) Network : A visual presentation of events and activities which depict interdependencies d) Dummy Activity : (dotted arrow) It represents a restraint. It should be considered
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This note was uploaded on 01/09/2012 for the course EMP 5100 taught by Professor Dhillon during the Winter '11 term at University of Ottawa.

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Lecture8_Nov07_2005 - EMP5100 - Introduction to Engineering...

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