## Proceedings of the International School of Physics "Enrico Fermi", Volume 94 |

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Page 290

Software systems go through two principal

development

implemented ...

Software systems go through two principal

**phases**during their life - cycle :development

**phase**and operation and maintenance**phase**. The development**phase**begins when the need for the product is identified ; it ends when theimplemented ...

Page 291

During the implementation or coding

suitable » language . A high - level , « structured » language might be used to

improve readability and manageability of the software [ 9 ] . The purpose of the

testing ...

During the implementation or coding

**phase**, each module is coded in a «suitable » language . A high - level , « structured » language might be used to

improve readability and manageability of the software [ 9 ] . The purpose of the

testing ...

Page 297

Following [ 4 ] , we classify the reliability models according to the

software life - cycle . Thus reliability models are classified according to whether

they are used during the development ( debugging )

, the ...

Following [ 4 ] , we classify the reliability models according to the

**phases**ofsoftware life - cycle . Thus reliability models are classified according to whether

they are used during the development ( debugging )

**phase**, the validation**phase**, the ...

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### Contents

STATISTICAL THEORY OF RELIABLITY | 8 |

Definitions and characterizations | 12 |

J KEILSON Stochastic models in reliability theory | 23 |

Copyright | |

37 other sections not shown

### Common terms and phrases

analysis application approach associated assume assumption BARLOW Bayesian calculation called complex components consider constant continuous correctness Course defined density depends derived described detected determine discussed distribution edited epochs equations equivalence ergodic errors estimate example exists expected exponential fact fail failure rate fault function given Hence important increasing independent input integration interest interval known likelihood limit Markov matrix mean measure method modules normal Note observed obtain occur operational parameters performance phase positive possible posterior predictive prior probability problem procedure prove random variables renewal repair requirements rule sample selected sequence simple software reliability space specification statistical stochastic structure Suppose task theorem theory tion transition tree University values York