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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-385@lptms.universite-paris-saclay.fr
DTSTART:20151110T110000Z
DTEND:20151110T120000Z
DTSTAMP:20151106T162335Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-jerry-percus/
SUMMARY:Séminaire du LPTMS: Jerome K. Percus - LPTMS\, salle 201\, 2ème 
 étage\, Bât 100\, Campus d'Orsay - 10 Nov 15 11:00
DESCRIPTION:Random walks that generate their own environment\nJ.K. Percus\,
  Courant Inst and Physics Dept\, New York University\nThe term "random wal
 k in a random environment" covers many phenomena in applied science. Most 
 frequently\, it refers to two independent random processes. We will look a
 t the opposite extreme\, in which the previous state of a - typically next
  neighbor walk on a lattice -changes the parameters of the current site. A
  primitive example that can be interpreted in this way is that of the stat
 istics of the maximum of a walk on the half line\, where we would expect a
  substantially increased mean and a substantially decreased variance over 
 that of the underlying walk. How extreme are these? A more structured exam
 ple\, of relevance to synaptic strengthening\, is that of a reinforced ran
 dom walk\, in which the first visit to a given site strengthens the "attra
 ction" of that site for future visits\, and this is quite simple in the Br
 ownian motion limit. Still more nuanced is the situation in which the "att
 raction" depends upon the number of previous visits.\n\n(in collaboration 
 with O.E. Percus)
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
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