Jüri Engelbrecht Institute of Cybernetics at Tallinn University of Technology Centre for Nonlinear Studies (CENS)
Download ReportTranscript 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