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⟦cc9502d1e⟧ Wang Wps File
Length: 964 (0x3c4)
Types: Wang Wps File
Notes: Spelunked
Names: »~ORPHAN01.09«
Derivation
└─⟦89b9efcb1⟧ Bits:30006072 8" Wang WCS floppy, CR 0029A
└─ ⟦this⟧ »~ORPHAN01.09«
WangText
r of failures possible during the maintained life of the software, T…0f…o…0e… is the MTTF
at the start of test and C is the testing compression factor. "Maintained life" is
the period extending from the start of test to discontinuance of program failurecorrection.
(Once program failure correction has been discontinued, the number of failures becomes
dependent on the program lifetime and (5) does not hold.) Failures and faults are
related through:
N…0f…o…0e… = BM…0f…o…0e… (6)
n = Bm (7)
where m is the number of failures experienced. Thus
the fault reduction factor B may be seen as an expression
of the net faut removal per failure.
The number of failures experienced is also an exponential
function of the cumulative execution time:
C̲t̲1̲ ̲ ̲ ̲ (8)
…0e…m = Mo 1 - exp - …0f… MoTo
