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Session 3
11:15 a.m. to 12:10 p.m. Thursday
August 18, 2005
Analytical Approach for Reliability
Assessment of DIS Systems
Technical hardware and software
systems with advanced technology are often equipped with failure Detection, Isolation and Self-healing mechanisms (DIS). In
such systems, continuous checks must be performed while the system
is in service. When failures are detected, hardware devices notify
the software, which takes appropriate actions and tries to
pinpoint the problem down to a replaceable or self-healing
subsystem. This isolation step is a key to success in service
availability. For self-healing actions, the software may use the
hardware resources to remove the failure and return the system to
the operational mode or the software alone may perform the
self-healing (e.g. by resetting or re-downloading). DIS comprises
three stochastic mechanisms made up of the mechanism initiative
probability and probability distribution function (pdf). Markov
modeling and simulation have been the most common approaches to
analyze the reliability of such systems. However, they confront
some limitations. Our objective is to present an analytical
technique to apply Fault Tree Analysis (FTA) and Reliability Block
Diagram (RBD) for reliability assessment of DIS systems.
K. Jenab and B.S.
Dhillon
University of Ottawa
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K. Jenab received B.Sc. and M.Sc. degrees in Industrial and
System Engineering from Departments of Industrial and System
Engineering, Isfahan Technology University, Tehran Polytechnic
University, respectively. Dr. Jenab received his first Ph.D
degree in Industrial and System engineering from Department of
Industrial and System Engineering - Iran University of Science
and Technology, and his second Ph.D degree in Mechanical
Engineering from Department of Mechanical and Aeronautical
Engineering - University of Ottawa. He held academic appointment
with department of Industrial and System Engineering in Azad
University-Tehran and served as Senior Scientist in Avionics,
Auto, and High-tech industries for 16 years. He joined National
Research Council Canada as Senior Research Scientist and
participated in several international research projects. He
published several papers in international scientific journals
based on his experiences in Avionics, Transportation, and
Telecommunication industries. Dr. Jenab is president of
MultiHorizon Associates International, Research and Engineering
Consulting Company in Design, Reliability, and Safety
Engineering for Avionics, Transportation, and Telecommunication
companies, such as Honeywell, Airbus, Bombardier Aerospace,
Messier-Dowty Inc, Alcatel Inc, and National Research Council
Canada. Dr. Dhillon has
served as Chairman/Director/Acting Director of the Mechanical
Engineering Department/Engineering Management Program for over
10 years. He has published over 310 articles and 27 books: Wiley
(1981), Van Nostrand (1983), Marcel Dekker (1984), Pergamon
(1986), etc. Several of his books are translated into languages
such as German, Russian and Chinese and he is /has been on the
editorial boards of 7 international scientific journals. Dr.
Dhillon is recipient of many awards/honours including Austin J.
Bonis Award (American Society for Quality Control), Merit Award
(Society of Reliability Engineers), and Glinski Award (Faculty
of Engineering). He is listed in many Who's Who documents and
has served as consultant to various organizations. Professor
Dhillon has lectured in over 50 countries including keynote
addresses at various scientific conferences held in North
America, Europe, Asia, and Africa. In March 2004, Dr. Dhillon
was a distinguished speaker at the Conf./Workshop on Surgical
Errors (sponsored by White House Health and Safety Committee and
Pentagon), held at the Capitol Hill (One Constitution Avenue,
Washington, D.C.).
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