Jüri Engelbrecht Institute of Cybernetics at Tallinn University of Technology Centre for Nonlinear Studies (CENS)
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Transcript Jüri Engelbrecht Institute of Cybernetics at Tallinn University of Technology Centre for Nonlinear Studies (CENS)
Jüri Engelbrecht
Institute of Cybernetics at
Tallinn University of Technology
Centre for Nonlinear Studies (CENS)
CENS
Founded 1999
Head: Prof Jüri Engelbrecht, DSc, Dr h c
Institute of Cybernetics at TUT
Akadeemia tee 21, 12618 Tallinn, Estonia
Tel. +372 6204160
Fax +372 6204151
[email protected]
http://cens.ioc.ee
GROUPS
Nonlinear waves
Fractality and biophysics
Nonlinear integrated photoelasticity
Water waves
Geometric approach
Nonlinear signal processing
ALTOGETHER (in 2007)
20 fellows (PhD’s)
10 PhD students
10 MSc and BSc students
in 2006 – 5 foreign researchers
Promoted (2000-2006) 21 BSc, 23 MSC, 9 PhD
INTERNATIONAL ADVISORY BOARD
Prof. R. Grimshaw (Loughborough)
Prof. G.A.Maugin (Paris)
Prof. H.K. Moffatt (Cambridge)
Prof. G. Nicolis (Brussels)
Prof. F. Pastrone (Turin)
Prof. G. Stepan (Budapest)
Prof. D.H. van Campen (Eindhoven)
Prof. V.Saks (Grenoble, Tallinn)
INTERNATIONAL CONTACTS
Bilateral agreements
International programmes/projects
Study visits/summer schools abroad
Graduate schools/seminars at CENS
ESF PROGRAMME
NATEMIS
Resonance method for nondestructive evaluation
Nonlinear effects
Italy, Germany, Czech Republic,
Belgium, Sweden, Spain
Institute of Thermomechanics, Prague
Fraunhofer Institute for Nondestructive Testing, Saarbrücken
FP6 PROJECT
WIND-CHIME
Wide-range Non-intrusive Devices toward Conservation of
Historical Monuments in the Mediterranean Area
Material technologies toward less intrusive implementations
Italy, Norway, Tunis, Egypt, Greece, Jordan
MARIE CURIE POST-DOC FELLOWSHIPS
Cell energetics
Marie Curie Fellow – Marko Vendelin (Grenoble)
Marie Curie Fellow – Olav Kongas (Amsterdam)
MARIE CURIE REINTEGRATION GRANT
Marko Vendelin (Tallinn)
MARIE CURIE
TRANSFER OF KNOWLEDGE ROGRAMME
CENS (Tallinn)
CMA (Oslo)
Contract 2005-2009
Senior Fellows
Post-Docs
Focus on:
nonlinear waves
biomechanics
Centres of Excellence in
Estonia
Norway
WELLCOME TRUST GRANT
Marko Vendelin
“Cardiac Cell Energetics”, 1 meuro
New lab on Systems Biology
experiments + in silico modelling
(Analysis of structural and functional aspects of compartmentation of
adenine nucleotides in heart muscle cells)
FRENCH-ESTONIAN PROGRAMME
PARROT
2003-2004, nonlinear waves
2005-2006, piano dynamics
BILATERAL
Paris 6
Helsinki
Eindhoven
Turin
Budapest
Hong Kong
Loughborough
Messina
ERA-NET COMPLEXITY (1)
Specific Support Action 2004-2005
Full Programme 2006-2009
11 countries: UK (contractor)
Belgium, Denmark, Estonia, Greece,
Hungary, Ireland, Italy, the Netherlands,
Portugal, Spain
observers – France, Germany
ERA-NET COMPLEXITY (2)
Mathematics
Nonlinear dynamical systems
Physics
Systems out of equilibrium
Chemistry
Control theory
Biology
Computer Science
Economics
…
Adaptive and self-organizing systems
Complex dynamical networks of
interacting units
“The whole is more than the sum of the parts”
Aristotle
ERA-NET COMPLEXITY (3)
CENS and CDC
Nonlinearity and fractality of natural processes
Biocomplexity
Complexity of dynamical processes
Software complexity
Complexity in software-intensive systems
CENS KEYWORDS
Nonlinear dynamics
Complex systems
Soft matter physics
Microstructured solids
Solitons
Acoustodiagnostics
Photoelasticity
Biophysics and cell energetics
Surface and extreme waves in sea
Signal processing
Nonlinear differential equations
Complexity
MAIN RESULTS
Interaction solitons, shallow water
Surface elevation in the
vicinity of the interaction
area, corresponding to
incoming solitons with
equal amplitudes but
different angles between
their crests.
MAIN RESULTS
Interaction of solitons in nature
MAIN RESULTS
Emergence of solitons
Emergence of solitons
from an harmonic
excitation in force field.
After a certain transfer
period the emerging
coherent pattern is seen
with amplified solitons.
MAIN RESULTS
Wave motion and dynamics
Mindlin model for
microstructured solids,
1D. Two trains of
solitons emerging from
a single input.
MAIN RESULTS
Phase transition
Stress wave changes the
shape of a martensitic
inclusion in an austenitic
solid.
MAIN RESULTS
Thermomechanical modelling
200
Martensite
Dimensionless width
160
Loading
120
80
40
Austenite
0
40
80
120
Dimensionless length
160
0
200
Shift of a phase boundary
(green line) between
martensite and austenite
under localized pulse-type
stress load at the left
boundary. The influence
of shear causes a rugged
interface.
MAIN RESULTS
Biophysics
Schematic representation of
the biochemical processes in
the reaction-diffusion model of
the heart cell.
MAIN RESULTS
Biophysics
Stress in the heart.
MAIN RESULTS
Biophysics
Stress in
the heart.
MAIN RESULTS
Biophysics
Lyapunov exponent
map on the parameter plane for the
periodical driven
nerve pulse equation
modelling cardiac
conduction.
MAIN RESULTS
Soft matter physics
A chaotic mixing of an
initially smooth field of
dye by a smooth chaotic
velocity field leads to
complex multifractal
patterns.
MAIN RESULTS
Soft matter physics
Changes in a
stock
portfolio.
MAIN RESULTS
Biomedical engineering
EEG measurements,
external source –
a mobile phone.
MAIN RESULTS
EEG correlation
MAIN RESULTS
Stress analysis
The idea of
acoustodiagnostics.
Interaction of two counterpropagating acoustic waves.
MAIN RESULTS
Stress analysis
Polariscope
AP-04SM for
determining
residual stresses
in a glass
specimen.
MAIN RESULTS
Tomography
Geometry of the
high-pressure
lamp and axial
stress field in the
axisymmetric
part.
MAIN RESULTS
Wave motion and dynamics
Testing device for piano
hammers. The hysteretic
parameters of felt are
determined from the
measured nonlinear
force - compression
curves.
See also http://cens.ioc.ee
ESF Programme NATEMIS:
P.-P. Delsanto (ed). Universality of Nonclassical Nonlinearity.
Applications to Non-Destructive
Evaluations and Ultrasonics. Springer, 2006, 546 pp.
papers by
Engelbrecht et al
Berezovski et al
Ravasoo et al
Pastrone
AJP: Cell Physiology, 2006, 291 (Dec.),
issue 6:
Special call:
Systems Biology of the Mitochondrion
Guest editors: Dan Beard, Marko Vendelin
Issue 6:
Next issues:
14 papers
other 10 papers
MAIN GOALS OF CENS
To be at the frontier of science
To react to national interests
To participate in international research
To disseminate knowledge
To keep a good research atmosphere