Le brin de cachemire sur sa hanche glisse au creux du ventre de l'autre, elle diminue progressivement son rythme, déboutonne les dernières phrases et fait jouer la glissière.
Fonctionnant sans relâche à l'envers, à l'endroit, la machine tricote.Cochon Pull / Pull Cochon
Fonctionnant sans relâche à l'envers, à l'endroit, la machine tricote.Cochon Pull / Pull Cochon
Hazard Caroline, le 25/2/2009 à 08h36
revue Web de Création Contemporaine depuis 1999
rssPanoplie.org propose de confronter deux "cultures de l'écran" contemporaines en constituant une collection de vidéos autour du vocabulaire propre au monde des ordinateurs.
Nous avons choisi le Jargon Informatique, lexique officiel des "hackers", comme source d'inspiration, et la vidéo, sous toutes ses formes, comme mode de représentation et vecteur de réflexion.
Nous offrons aux créateurs de révéler des liens, de proposer un point de vue et d'engager une réflexion.
Les internautes pourront découvrir et explorer des approches vidéographiques à travers une sélection d’oeuvres originales retenues et publiées sur le site de Panoplie.
Une rubrique proposée et animée par Pierre-Yves Cruaud
Vous souhaitez participer :
- Recherchez et/ou choisissez un thème correspondant à votre proposition, puis cliquez sur "proposer une vidéo sur ce thème".
- Inscrivez-vous sur le site panoplie.org, identifiez-vous, et remplissez le formulaire de soumission en indiquant les informations demandées ( titre de la vidéo, description, eventuellement CV ) et en téléchargeant votre fichier vidéo (format MOV, 8mo maximum ).
Sous 2 semaines, l'équipe de panoplie.org vous informera de la décision de publication de votre soumission et de la date de sa publication.
2006-10-27 17:15:37
definition:
proposer une video sur ce thème
MIT AI Memo 239 (February 1972). A legendary collection of neat
mathematical and programming hacks contributed by many people at MIT and
elsewhere. (The title of the memo really is
HAKMEM
, which
is a 6-letterism for ‘hacks memo’.) Some of them are very
useful techniques, powerful theorems, or interesting unsolved problems, but
most fall into the category of mathematical and computer trivia. Here is a
sampling of the entries (with authors), slightly paraphrased:Item 41 (Gene Salamin): There are exactly 23,000 prime numbers less
than
2
.18
Item 46 (Rich Schroeppel): The most
probable
suit distribution in bridge hands is 4-4-3-2, as compared to 4-3-3-3, which
is the most evenly
distributed. This is because the
world likes to have unequal numbers: a thermodynamic effect saying things
will not be in the state of lowest energy, but in the state of lowest
disordered energy.Item 81 (Rich Schroeppel): Count the magic squares of order 5 (that
is, all the 5-by-5 arrangements of the numbers from 1 to 25 such that all
rows, columns, and diagonals add up to the same number). There are about
320 million, not counting those that differ only by rotation and
reflection.
Item 154 (Bill Gosper): The myth that any given programming language
is machine independent is easily exploded by computing the sum of powers of
2. If the result loops with period
= 1
with sign +
, you are on a sign-magnitude
machine. If the result loops with period =
1
at -1
, you are on a
twos-complement machine. If the result loops with period greater than 1,
including the beginning, you are on a ones-complement machine. If the
result loops with period greater than 1, not including the beginning, your
machine isn't binary — the pattern should tell you the base. If you
run out of memory, you are on a string or bignum system. If arithmetic
overflow is a fatal error, some fascist pig with a read-only mind is trying
to enforce machine independence. But the very ability to trap overflow is
machine dependent. By this strategy, consider the universe, or, more
precisely, algebra: Let X =
the sum of
many powers of 2 = &ellipsis;111111 (base 2). Now add
X
to itself: X + X
=
&ellipsis;111110. Thus, 2X = X -
1
, so X = -1
. Therefore
algebra is run on a machine (the universe) that is two's-complement.Item 174 (Bill Gosper and Stuart Nelson): 21963283741 is the only
number such that if you represent it on the
PDP-10*
as both an integer and a floating-point number, the bit patterns of the two
representations are identical.Item 176 (Gosper): The
banana phenomenon
was
encountered when processing a character string by taking the last 3 letters
typed out, searching for a random occurrence of that sequence in the text,
taking the letter following that occurrence, typing it out, and iterating.
This ensures that every 4-letter string output occurs in the original. The
program typed BANANANANANANANA&endellipsis; We note an ambiguity in the
phrase, the
In one sense, there are five 00's in 0000000000; in another,
there are nine. The editing program TECO finds five. Thus it finds only
the first ANA in BANANA, and is thus obligated to type N next. By Murphy's
Law, there is but one NAN, thus forcing A, and thus a loop. An option to
find overlapped instances would be useful, although it would require
backing up N
th occurrence
of.N
− 1 characters before
seeking the next N
-character
string.HAKMEM also contains some rather more complicated mathematical and
technical items, but these examples show some of its fun flavor.
An HTML transcription of the entire document is available at
http://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html
.
