SUO: Re: Continuants and Accidents In 4-Dim
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Pat Hayes wrote:
>
...
>
[ A whole lot of non-motor-city-related stuff,
| and then finally something more motorvating:]
>
...
>
> Cars run on roads, but one doesn't do vehicle design by looking at tarmac.
Actually, one does ...
Google Search on <vehicle design tarmac road asphalt>
turned up 322 hits. Not to be picky, I deal the card
off the top of the deck, which oddly enough turns out
to be on AI (Accident Investigation), very intriguing:
> AI's make increasing use of computer software packages to
> process and analyse specific accident data and trajectories
> accurately. The data input is derived from:
>
> -- mathematical models, formulas and calculations derived from the laws of physics
> -- statistical correlations collected from previous RTAs and field test results
> -- vehicle occupant crash models
> -- pedestrian impact models
> -- manufacturers' vehicle handling and tyre performance data
> -- independent research investigations
>
> Forensic science, based on Locard's Principle
> that states 'every contact leaves a trace' is
> as important to road traffic accidents as it
> is to murder scenes. The difference is that
> the AI is dealing with tyre marks and vehicle
> damage rather than fingerprints and cloth fibres.
>
...
>
> The maximum cornering speed a vehicle is capable of can be also be determined
> by the friction value of the road surface. Attempting to negotiate too tight
> a corner or bend at a speed beyond the critical limit is one of the main causes
> of vehicle occupant fatalities. The front tyres remain on their steered course,
> but the unsteered rear wheels loose adhesion, putting the car into a spin which
> presents one side of the car, (the least protected part) to the front. Should
> the side of the car hit a lamp post, tree or another approaching vehicle the
> chances of escaping injury are very low. Impact depth is calculated at
> one inch for each mph of impact speed.
>
...
Now, this is about AI, but I think that
the impacts on vehicle design are clear.
I was going to invert the metaphormasis
to derive the bearing of this lesson on
the relation between logic and semiotic,
but, of course, Peirce already did that:
| 'On the Definition of Logic'.
|
| Logic will here be defined as 'formal semiotic'.
| A definition of a sign will be given which no more
| refers to human thought than does the definition
| of a line as the place which a particle occupies,
| part by part, during a lapse of time. Namely,
| a sign is something, 'A', which brings something,
| 'B', its 'interpretant' sign determined or created
| by it, into the same sort of correspondence with
| something, 'C', its 'object', as that in which it
| itself stands to 'C'. It is from this definition,
| together with a definition of "formal", that I
| deduce mathematically the principles of logic.
| I also make a historical review of all the
| definitions and conceptions of logic, and show,
| not merely that my definition is no novelty, but
| that my non-psychological conception of logic has
| 'virtually' been quite generally held, though not
| generally recognized. (CSP, NEM 4, 20-21).
|
| Charles Sanders Peirce,
| 'The New Elements of Mathematics',
| Volume 4, Edited by Carolyn Eisele,
| Mouton, The Hague, 1976.
Be Careful Out There,
Jon Awbrey
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