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D. Tang, M. Hecht, J. Agron, J. Miller, H. Hecht, "Engineering Oriented Dependability
Evaluation: MEADEP and Its Applications", 1997 Pacific Rim International Symposium
on Fault-Tolerant Systems, Taipei, Taiwan, December, 1997
MEADEP is a user-friendly dependability evaluation tool for measurement-based analysis
of digital systems including software. Features of MEADEP include: a data processor
for converting data in various formats (records with a number of fields stored in
ASCII, dBASE, Access and other database files) to the MEADEP format, a statistical
analysis module for graphical data presentation and parameter estimation, a graphical
modeling interface for building reliability block diagrams and Markov chains, a
library of dependability models for constructing customer models, and a model solution
module for availability/reliability calculation and parametric analysis. Use of
the tool on failure data from measurements can provide objective evaluations of
dependability for critical systems, while greatly reducing requirements for specialized
skills in data processing, analysis, and modeling from the user. MEADEP has been
applied to evaluate dependability for several air traffic control systems and results
produced by MEADEP have provided valuable feedback to the program management of
these critical systems. MEADEP has also been used to develop a nuclear power plant
safety model and results of sensitivity analysis on this model are discussed.
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