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UID:DSC-4678
DTSTART;TZID=Europe/Berlin:20130228T150000
SEQUENCE:1362038153
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20130228T160000
URL:https://www.dresden-science-calendar.de/calendar/en/detail/4678
LOCATION:TUD\,    
SUMMARY:Dress: Modelling\, Simulating and Analysing Structure Formation in 
 Tissue and in Cellular Automata
CLASS:PUBLIC
DESCRIPTION:Speaker: Andreas Dress\nInstitute of Speaker: Bielefeld\nTopics
 :\nBiologie\, Informatik\, Mathematik\n Location:\n  Name: TUD (Willersbau
  A317)\n  Street:   \n  City:  \n  Phone: \n  Fax: \nDescription: Structur
 e formation has fascinated mankind ever since antiquity. And\, after the i
 ntroduction of infinitesimal calculus\, partial differential equations app
 eared for a long time to constitute the only proper mathematical methodolo
 gy to generate and analyse spatio-temporal models of structure formation. 
 So\, it came as a slight surprise that even rather coarse-grained and simp
 listic CA-type models could capture essential features of structure format
 ion processes. In the lecture\, I will first recall how we first learned a
 bout this almost 30 years ago when\, jointly with Martin Gerhardt\, Nils J
 aeger\, Peter Plath\, and Heike Schuster\, we tried to analyse heterocatal
 ytic processes on metal surfaces and\, this way\, discovered that such pro
 cesses might potentially form interesting spatial-temporal patterns -- a f
 inding that was confirmed only later by Ronald Imbihl in a number of beaut
 iful experiments (now in Hannover\, then working at Gerhard Ertl's lab in 
 Berlin). I will then go on to present various CA-type models that were lat
 er developed jointly with Peter Serocka at Bielefeld in the 1990s and clea
 rly exhibited striking phase transitions in \"pattern space\"\, going e.g.
  from patterns of ever turning spirals to patterns of \"growing\, intermin
 gling\, and solidifying empires\" upon one slight change of parameters for
  one time step\, only\, -- thus furnishing intriguing metaphors for the on
 set and establishment of e.g. cancer in healthy tissue caused (perhaps) by
  a slight disturbance of cell metabolism. Finally\, I will turn to a mathe
 matical analysis of certain CA dynamics and discuss some mathematical tool
 s like discrete Fourier transforms that\, as was recently shown by LIN Wei
  from Fudan U\, can be used to treat at least some aspects of these models
  in proper mathematical terms.
DTSTAMP:20260513T161159Z
CREATED:20130205T080318Z
LAST-MODIFIED:20130228T075553Z
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