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Robin 2010-06-05 10:36:45 +01:00
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symptom_ex_process/symptom_ex_process.tex
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@ -207,7 +207,7 @@ Each `test case' is analysed.
The component failure modes are examined with respect to their effect on the functional~group. The component failure modes are examined with respect to their effect on the functional~group.
The philosophy behind this analysis is, how will the functional~group react The philosophy behind this analysis is, how will the functional~group react
to each of the test case conditions. The aim is to produce a set of failure modes from the perspective of the functional~group. to each of the test case conditions. The aim is to produce a set of failure modes from the perspective of the functional~group.
\paragraph{Symptom identification and collection} \paragraph{Symptom identification}
When all `test~cases' have been analysed a second phase is applied. When all `test~cases' have been analysed a second phase is applied.
% %
This looks at the results of the `test~cases' as symptoms This looks at the results of the `test~cases' as symptoms
@ -352,7 +352,7 @@ $$ FM(DC) = \{ SP1, SP2, fgfm_6 \} $$
Note that $fgfm_6$, while being a failure mode has not been grouped as a common symptom Note that $fgfm_6$, while being a failure mode has not been grouped as a common symptom
has {\textbf not dissappeared from the analysis process}. has {\textbf not dissappeared from the analysis process}.
Were the designer to have overlooked this test case, it would appear in the derived component. Were the designer to have overlooked this test case, it would appear in the derived component.
This is rather like a child not eating his lunch and being served it cold for dinner\footnote{Although I was only ever threatened with a cold dinner, my advice to all nine year olds is its best to throw the brussell sprouts out of the dining~room window while the adults are not watching!}! This is rather like a child not eating his lunch and being served it cold for dinner\footnote{Although I was only ever threatened with a cold dinner, my advice to all nine year olds faced with this dilema, is its best to throw the brussell sprouts out of the dining~room window while the adults are not watching!}!
The process must not allow failure modes to be ignored or forgotten. The process must not allow failure modes to be ignored or forgotten.
@ -400,7 +400,6 @@ model.
\clearpage
\section{A Formal Algorithmic Description of `Symptom Abstraction'} \section{A Formal Algorithmic Description of `Symptom Abstraction'}
The algorithm for {\em symptom abstraction} is described in The algorithm for {\em symptom abstraction} is described in