IAP Newsletter - December 2004, Issue 74

Message from the Co-ordinator
Staff Movements and Visitors
Seminars
Thesis Defences
Papers produced by the IAP Network
Graduate School
Workshops and Study Days
Other
Vacancies
IAP Contact Persons

Message from the Co-ordinator

No special event for our network in the coming weeks. However, December 15 is the deadline for submission of abstracts to the Organizing Committee of the 24th Benelux Meeting on Systems and Control, which will take place in Houffalize on March 22-24, 2005. This is a meeting at which most of the IAP members participate. It is a great meeting place for PhD students, post-docs and academic staff from Belgium and Holland. Thus, this is the time to write up your abstract proposal.

Michel GEVERS
Co-ordinator IAP V/22

Staff Movements and Visitors

UCL-INMA

Petr KLAN (Institute of Computer Science of Praha) will be at CESAME on December 1-7. He will work with Raymond Gorez on the writing of a scientific paper.

KUL-ESAT

Tijl DE BIE has left SISTA to join the School of Electronics and Computer Science at the University of Southampton as a research staff member.

UGent-SYSTeMS

Prof. Cesar DE PRADA (Universidad de Valladolid, Spain) will visit the SYSTeMS group from December 13 to December 19, 2004. During this week he will give three lectures In the framework of a regular UGent-FTW-course entitled "Modelling and Control of Dynamical Systems" tenured by Prof. Robin De Keyser, Prof. DE PRADA will give three lectures entitled "Control Instrumentation", "Controller Structures (feedforward, cascade, split-range, ratio)", and "Chemical Reactor control and Distillation Column control".

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Seminars

UCL-INMA

07.12: Christian DARLOT (ENST, Paris)
"Modélisation de la commande motrice"
Time: 14:00-15:00

07.12: Fabrice LOIX (CESAME)
"Articular cartilage with intra- and extrafibrillar waters. Simulations of transient salt replacements by the finite element method"
Time: 15:15-16:15

21.12: Hynek PROCHAZKA (CESAME)
"Synthèse de régulateurs robustes et performants par placement de pôles et calibrage de sensibilité"
Time: 14:00-15:00

21.12: Christophe FRIEBEL (CESAME)
"Micro-macro modeling of visco-elasticity in polymer-matrix composites"
Time: 15:15-16:15

N.B.: Unless otherwise instructed, the seminars take place at the EULER Auditorium - Bâtiment EULER - Avenue Georges Lemaître, 4 - Louvain-la-Neuve.

More information can be found at:
http://www.csam.ucl.ac.be/news/seminars.html

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KUL-SCORES (and not "KUL-ESAT" as wrongly announced in the first place)

09.12: Guido DE ROECK (K.U. Leuven, Department Civil Engineering)
"Damage detection and parameter identification by finite element model updating"
Time and location: 16:00 at K.U.Leuven - ESAT - Room 00.62

09.12: Gregory PINTE (K.U. Leuven, PMA)
"Active structural acoustic control of impact noise"
Time and location: 16.45 at K.U.Leuven - ESAT - Room 00.62

UGent-SYSTeMS

03.12: FLOCHOVA Jana (Univ. Bratislava/CESAME-UCL)
"Petri net extensions in DES control and failure diagnosis"
Time: 14:00-15:00
Location: UGent-SYSTeMS lecture room (2nd floor) - Technologiepark Zwijnaarde 914, B-9052 Zwijnaarde

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Thesis defences

UCL-INMA

20.12: Antoine VANDENDORPE - Promoter: Paul VAN DOOREN
Title: "Model reduction of linear systems: an interpolation point of view"
Time and location: 14:00 - Auditoire «BARB 91», Place Sainte-Barbe, Louvain-la-Neuve (Accès Louvain-la-Neuve Biéreau, Parking 11).

Abstract:
The modelling of physical processes gives rise to mathematical systems of increasing complexity. Good mathematical models have to reproduce the physical process as precisely as possible while the computing time and the storage resources needed to simulate the mathematical model are limited. As a consequence, there must be a tradeoff between accuracy and computational constraints. At the present time, one is often faced with systems that have an unacceptably high level of complexity. It is then desirable to approximate such systems by systems of lower complexity. This is the Model Reduction Problem. This thesis focuses on the study of new model reduction techniques for linear systems.

Our objective is twofold. First, there is a need for a better understanding of Krylov techniques. With such techniques, one can construct a reduced order transfer function that satisfies a set of interpolation conditions with respect to the original transfer function. A study of the generality of such techniques and their extension for MIMO systems via the concept of tangential interpolation constitutes the first part of this thesis. This also led us to study the generality of the projection technique for model reduction.

Most large scale systems have a particular structure. They can be modelled as a set of subsystems that interconnect to each other. It then makes sense to develop model reduction techniques that preserve the structure of the original system. Both interpolation-based and gramian-based structure preserving model reduction techniques are developed in a unified way. Second order systems that appear in many branches of engineering deserve a special attention. This constitutes the second part of this thesis.

KUL-ESAT

23.12: Raphaël CENDRILLON - Promoter: Prof. Marc Moonen
Title: "Multi-user Signal and Spectra Coordination for Digital Subscriber Lines"
Time and location: 17:00 - Arenberg Kasteel.

Abstract:
The appetite amongst consumers for ever higher data-rates seems insatiable. This booming market presents a huge opportunity for telephone and cable operators. It also presents a challenge: the delivery of broadband services to millions of customers across geographically sparse areas. Whilst technically the most advanced solution, fully fibre-based networks are prohibitively expensive to deploy. Digital subscriber lines (DSL) provide an alternative solution. Seen as a stepping-stone to a fully fibre-based network, DSL operates over telephone lines that are already in place, minimizing the cost of deployment.

The basic principle behind DSL technology is to increase data-rate by widening the transmission bandwidth. Unfortunately, operating at high frequencies, in a medium originally designed for voice-band transmission, leads to crosstalk between the different DSLs. Crosstalk is typically 10-15 dB larger than the background noise and is the dominant source of performance degradation in DSL.

This thesis develops practical multi-user techniques for mitigating crosstalk in DSL. The techniques proposed have low complexity, low latency, and are compatible with existing customer premises equipment (CPE). In addition to being practical, the techniques also yield near-optimal performance, operating close to the theoretical multi-user channel capacity.

VUB-ELEC

07.12: Fedor DE RIDDER - Promoters: Prof. Rik Pintelon and Prof. F Dehairs
Title: "Identification of the time base in environmental archives"
Time and location: 13:00 - VUB, Room P. Janssens - Building K (2nd floor).

Abstract:
The past climate is reconstructed using environmental archives, like ice cores, sediments on the bottom of the oceans, and corals, which grows near the surface. All these archives grow steadily, due to snow fall, sedimentation processes or biological growth. While growing, changes in the environment are reflected in the chemical and isotopical composition of these archives and the investigator can reconstruct the past climate from the fingerprints of these tracers in these archives.

Next data-analysis tools are used to interpret changes in the environment, but an additional problem, which complicates the interpretation of these records, are changes in the accretion or growth rate, which are unknown, too, for the investigator.

To overcome this problem, a method is proposed to transform the distance scale into a time scale, based on the periodicity assumption of the record. It allows reconstructing the growth rate and the time series. Initially, we assume an average constant accretion rate. Next, variations in accretion rate are modeled as a distortion of this linear age/depth relation. Interpretation of the Fourier spectrum enables the estimation of these distortions and thus of a more accurate time base. Figure (a) shows the stable isotope measurements in a clam from Washington State (USA) as function of the distance. The variation reflects the annual variation in temperature. One can easily identify the decrease in growth rate from left to right. The full line on Figure (b) shows the spectrum, assuming a constant growth rate. Decoding the side peaks appearing around the peak at one year-1, gives an estimate of the growth rate (Figure (c)). The dotted line in Figure (b) illustrates the simplification of the spectral contents after the introduction of a non-linear age/depth relation.

Once we were able to reconstruct time bases, we have tried to tackle the next question: "How much information is actually hidden in a given proxy record?" On the one hand the complexity of the time base can vary due the particular form of the accretion rate; e.g. monotonically, exponentially decreasing accretion rates in bivalves or periodically changing rates in mangroves, up to hiatuses. On the other hand, the complexity of the signal model can vary from a simple sinusoidal signal with one harmonic in its spectrum to multiple harmonics describing inter-annual variations. In order to determine the complexity of both models and to separate them from stochastic noise, statistical model selection criteria were adapted and applied.

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Papers produced by the IAP Network

UCL-INMA

Gevers M.: "On the development of system identification", submitted to IEEE Control Systems Magazine.

Aksikas I., Winkin J. & Dochain D.: "Asymptotic Stability of Infinite-Dimensional Semilinear Systems: Application to a Nonisothremal Reactor", submitted to Systems & Control Letters.

Espinosa J., Vandewalle J. & Wertz V.: "Fuzzy Logic, Identification and Predictive Control", Advances in Industrial Control, Springer Verlag, 263 pages (ISBN : 1-85233-828-8).

Chalaoui Y., Gallivan K.A., Vandendorpe A. & Van Dooren P.: "Model reduction of second order systems", submitted to Special Issue en Model Reduction, Eds. P. Benner et al., Springer Verlag.

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KUL-ESAT

Brants J.R., Ayoubi T.A., Chada K., Marchal K., Van de Ven W.J. & Petit. M.M.: "Differential regulation of the insulin-like growth factor II mRNA-binding protein genes by architectural transcription factor HMGA2", Internal Report 04-181, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in FEBS Letters.

Marchal K., De Smet F., Engelen K. & De Moor B.: "Computational biology and toxicogenomics", in chapter 3 Predictive toxicology, (Helma C., ed.), Marcel Dekker (New York), 2004, pp. 37-85.

Roosen J., Engelen K., Marchal K., Mathys J., Griffioen G., Cameroni E., Thevelein J.M., De Virgilio C., De Moor B. & Winderickx J.: "PKA and Sch9 Control a Molecular Switch Important for the Proper Adaptation to Nutrient Availability", Molecular Microbiology, vol. xx, no. xx, Dec. 2004, pp. xxx.

Klasen T.J., Van den Bogaert T., Moonen M. & Wouters J.: "Preservation of interaural time delay for binaural hearing aids through multi-channel Wiener filtering based noise reduction", Internal Report 04-184, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Diaz C., Sassaman L. & Dewitte E.: "Comparison between two practical mix designs", in Proc. of the 9th European Symposium On Research in Computer Security (ESORICS), Sophia Antipolis, France, Sep. 2004, pp. 141-159.

Van Herpe T., Goethals I., Pluymers B., De Smet F., Wouters P., Van den Berghe G. & De Moor B.: "Challenges in data-based patient modeling for glycemia control in ICU-patients", Internal Report 04-186, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in The IASTED International Conference on Biomedical Engineering (BIOMED 2005).

Klasen T.J., Van den Bogaert T., Moonen M. & Wouters J.: "Preserving interaural time delay cues during noise reduction in hearing aids", Internal Report 04-188, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Vanrumste B., Jones R. D., Bones P. J. & Carroll G. J.: "Singular Value Decomposition and Dipole Modelling applied to Observe Background Activity Originating from the Same Area as Epileptiform Events in the EEG of Paediatric Patients with Focal Epilepsy", in Proc. of the 2nd International Conference on Advances in Biomedical Signal and Information Processing, (MEDSIP 2004), Valleta, Malta, Sep. 2004, pp. 92-98.

Vanrumste B., Jones R. D., Bones P. J. & Carroll G. J.: "Background Activity Originating from Same Area as Epileptiform Events in the EEG of Paediatric Patients with Focal Epilepsy", in Proc. of the 26th Annual International Conference of IEEE Engineering in Medicine and Biology Society (EMBC 2004), San Francisco, USA, Sep. 2004, pp. 4397-4400.

Vanrumste B., Jones R.D., Bones P.J. & Carroll G.J.: "Observing slow EEG activity from same area as spikes in paediatric", in Proc. of the 16th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2004), Leuven, Belgium, July 2004, 04-194.

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Vanrumste B., Jones R.D., Bones P.J. & Carroll G.J.: "Slow-wave activity arising from the same area as epileptiform activity", Internal Report 04-194, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Coessens B., Van Vooren S., Glenisson P., Moreau Y. & De Moor B.: "Term-based literature mining across systems biology and biomedicine", Internal Report 04-196, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Aerts S., Coessens B., Lambrechts D., Moreau Y. & De Moor B.: "Computational candidate gene prioritisation by genomic data fusion", Internal Report 04-197, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Coessens B., Aerts S. & De Moor B.: "ENDEAVOUR--Prioritising Disease Genes Using Multiple, Heterogeneous Information Sources", Internal Report 04-198, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Rapisarda P. & Willems J.C.: "An introduction to quadratic differential forms", in Proc. of the Mathematical Theory of Networks and Systems (MTNS2004), Leuven, Belgium, July 2004.

Devos A., Lukas L., Suykens J.A.K., Vanhamme L., Howe F.A., Majos C., Moreno-Torres A., van der Graaf M., Tate A.R., Arus C. & Van Huffel S.: "Brain tumour classification using short echo time 1H MRS. Objective comparison of classification techniques (LDA, LS-SVM)", in Proc. of the 12th Scientific Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM04), Kyoto, Japan, May 2004, 384 pages.

Rapisarda P. & Willems J.C.: "Conserved- and zero-mean quadratic quantities for oscillatory systems", in Proc. of the Mathematical Theory of Networks and Systems (MTNS2004), Leuven, Belgium, July 2004.

Rocha P. & Willems J.C.: "nD Markovian behaviors: the discrete finite dimensional case", in Proc. of the Conference CONTROLO-04, Faro, Portugal, June 2004.

Rapisarda P. & Willems J.C.: "Conserved- and zero-mean quadratic quantities in oscillatory systems", Internal Report 04-203, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in Math. of Systems, Signals, and Control.

Willems J.C.: "Hidden Variables in Dissipative Systems", Internal Report 04-204, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in 43rd IEEE Conference on Decision and Control.

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Glenisson P., Glnzel W., Janssens F. & De Moor B.: "Combining full-text and bibliometric information in mapping scientific disciplines", Internal Report 04-205, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Maerivoet S. & De Moor B.: "The Art of Public Speaking", Internal Report 04-206, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Doclo S., Spriet A., Wouters J. & Moonen M.: "Speech Distortion Weighted Multi-Channel Wiener Filtering for Noise Reduction", Internal Report 04-207, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004. Chapter 7 in Speech Enhancement: What's New, (Benesty J., Huang A., Makino S., eds.), Springer Verlag, 2005.

Benesty J., Chen J., Huang A. & Doclo S.: "Study of the Wiener Filter for Noise Reduction", Internal Report 04-208, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004. Chapter 1 of Speech Enhancement, What's New, (Benesty J., Huang A., Makino S., eds.), Springer-Verlag, 2005.

Aerts S., Van Loo P., Thijs G., Mayer H. de Martin R. & De Moor B.: "TOUCAN 2: the all-inclusive open source workbench for regulatory sequence analysis"', Internal Report 04-209, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004.

Van den Nest M., Dehaene J. & De Moor B.: "Local equivalence of stabilizer states", in Proc. of the MTNS 2004 conference (MTNS), Leuven, Belgium, July 2004, 16 p.

Vanhamme L., Devos A., Van Hecke P. & Van Huffel S.: "Van spectroscopisch signaal tot klinische diagnose", Internal Report 04-213, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in Het Ingenieursblad.

Espinoza J., Vandewalle J. & Wertz V.: "Fuzzy logic, identification and predictive control", vol. 0 of Advances in industrial control, Springer, 2005, 263 p.

Roska T. & Vandewalle J.: "Proceedings of the IEEE IJCNN 2004", in Proceedings of IEEE IJCNN 2004, Budapest, Hungary, Jul. 2004, pp. 1.

Hermus K., Verhelst W., Lemmerling P., Wambacq P. & Van Huffel S.: "Perceptual audio modeling with exponentially damped sinusoids", Internal Report 04-216, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2004, accepted for publication in Signal Processing, 2004.

More information and downloads for ESAT-SCD can be obtained from the pub-engine at:
http://www.esat.kuleuven.ac.be/~sistawww/cgi-bin/pub.pl

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UGent-SYSTeMS

Aeyels D. & Rogge J.A.: "Existence of Partial Entrainment and Stability of Phase Locking Behavior of Coupled Oscillators", to be published in Progress of Theoretical Physics Vol.112, No.6.

Wyns B., Sbarciog M., Ionescu C., De Keyser R. & Boullart L.: "Neural Network Modelling versus Physical Modelling. Application to a Solar Power Plant", Contribution in the IHP Annals of the Plataforma Solar de Almería, Spain, pp. 131-138, 2004, ISBN 84-7834-474-8.

Ionescu C., Wyns B., Sbarciog M., Boullart L. & De Keyser R.: "Comparison Between Physical Modelling and Neural Network Modelling of a Solar Power Plant", IASTED Conference on Applied Simulation and Modelling (ASM04), Rhodos, Greece, CDpaper 443-068, 6p, 2004.

Vrabie D., De Keyser R. & Lazar C.: "Multivariable EPSAC Predictive Control for Non-minimum Phase Systems. Applications to a Four-Tank Process", 12th Mediterranean Conf. On Control and Automation (MED04), Kusadasi, Turkey, 6p, 2004.

Lazar M. & De Keyser R.: "Nonlinear Predictive Control of a DC-to-DC converter", Symp. on Power Electronics, Electrical Drives, Automation & Motion (Speedam2004), Capri, Italy, CDpaper – A206, 5p, 2004.

De Keyser R., Ionescu C. & Sbarciog M.: "Advanced Control of a Boost Converter", Symp. on Power Electronics, Electrical Drives, Automation & Motion (Speedam2004), Capri, Italy, CDpaper – A061, 6p, 2004.

Ionescu C. & De Keyser R.: "Towards a Novel Non-invasive Diagnosis Method for the Human Respiratory System", (IFMBE) Mediterranean Conf. on Medical and Biological Engineering (MEDICON2004), Ischia, Italy, 4p, 2004 (awarded with IFMBE & IBM 'Young Researchers Competition').

Vrabie D., De Keyser R. & Lazar C.: "Improving EPSAC tuning for processes with unstable transmission zeros", IEEE-TTTC- Int. Conf. on Automation, Quality and Testing, Robotics (AQTR2004-THETA14), Cluj-Napoca, Romania, 6p, 2004.

Nascu I., De Keyser R., Folea S. & Vlasin C.: "PID Auto-tuning algorithm for processes without time delay", IEEE-TTTC- Int. Conf. on Automation, Quality and Testing, Robotics (AQTR2004-THETA14), Cluj-Napoca, Romania, 6p, 2004.

Buzdugan T., De Keyser R. & Nascu I.: "Internet-based Control Engineering Laboratory" IEEE-TTTC- Int. Conf. on Automation, Quality and Testing, Robotics (AQTR2004-THETA14), Cluj-Napoca, Romania, 6p, 2004.

Sbarciog M., Wyns B., Ionescu C., De Keyser R. & Boullart L.: "Neural Network Models for a Solar Power Plant", IASTED Conference on Neural Networks and computational Intelligence (NCI'04), Grindelwald, Switzerland, CDpaper 413-042, 6p, 2004.

De Keyser R. & Ionescu C.: "Power Electronics Control: a Case-study in Control Engineering", VI ACA Congreso de Automatizacion 2004, Universidad de Ibagué, CD-proceedings.

Ionescu C. & De Keyser R.: "Detection of Novel Respiratory Mechanics Parameters by Means of Forced Oscillations", submitted to IFAC World Congress, 4-8 July 2005, Praha.

Ionescu C. & De Keyser R.: "Adaptive Closed-loop Control Strategy for Paralyzed Skeletal Muscles", submitted for the Special Session on "Control Aspects in Biomedical Engineering" organized by Prof. R. De Keyser at IASTED Int. Conf. BioMED 16-18 Feb 2005, Innsbruck, Austria (http://www.iasted.org/conferences/2005/innsbruck/biomed-specsess-keyser.htm).

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VUB-ELEC

Van der Plas G., Soens C., Vandersteen G., Wambacq P. & Donnay S.: "Analysis of substrate noise propagation in a lightly doped substrate", ESSDERC 2004, 34th European Solid-State Device Research Conference, Leuven, Belgium, 21-23 September 2004.

Soens C., van der Plas G., Wambacq P. & Donnay S.: "Performance degradation of an LC-tank VCO by impact of digital switching noise", ESSCIRC 2004, 30 th European Solid-State Circuits Conference, Leuven, Belgium,21-23 September 2004.

Ramos J., Mercha A., Jeamsaksiri W., Linten D., Jenei S., Rooyackers R., Verbeeck R., Thijs S., Scholten A., Wambacq P., Debusschere I. & Decoutere S.: "90nm RF CMOS technology for low-power 900MHz applications", ESSDERC 2004, 34th European Solid-State Device Research Conference, Leuven, Belgium, 21-23 September 2004.

Thijs S., Natarajan M.I., Linten D., Daenen T., Vassilev V., Degraeve R., Wambacq P. & Groeseneken G.: "Implementation of Inductor Based ESD Protection for 5.5 GHz LNA in 90 nm RF CMOS - Concepts, Constraints and Solutions", Proceedings EOS/ESD Symposium, Dallas, USA, Sept.19-23, 2004, pp.40-49.

De Locht L., Vandersteen G., Wambacq P., Rolain Y., Pintelon R., Schoukens J. & Donnay S.: "Identifying the main nonlinear contributions: Use of multitone excitations during circuit design", 64 ARFTG conference, Orlando, Florida, 3-4 December 2004.

de Brauwere A., De Ridder F., Elskens M., Schoukens J., Pintelon R. & Baeyens W.: "Refined Estimate of Total Variation Enables a More Accurate Parameter and Uncertainty Estimation, as Well as a new Model Selection", 2004 AGU Fall Meeting, San Fransico, 13-17 December 2004.

De Ridder F., Pintelon R., Schoukens J., de Brauwere A. & Dehairs F.: "Identification of the time base in environmental archives", 2004 AGU Fall Meeting, San Fransico, 13-17 December 2004.

Van Gheem E., Pintelon R., Vereecken J., Schoukens J., Hubin A., Verboven P. & Blajiev O.: "Electrochemical impedance spectroscopy in the presence of non-linear distortions and non-stationary behaviour Part I: theory and validation", Electrochimica Acta, 49 (26), October 2004, pp. 4753-4762.

Schoukens J., Pintelon R. & Rolain Y.: "Box-Jenkins alike identification using nonparametric noise models", Automatica 40 (2004), pp. 2083-2089.

Schoukens J. & De Locht L.: "Nonlinear analysis and modeling for the practical user (SEM-238)", lecture at IMEC seminar, Leuven, IMEC-auditorium, December 3, 2004.

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KUL-NUMERICS

Samaey G., Roose D. & Kevrekidis I.: "The gap-tooth scheme for homogenization problems", Multiscale Modeling and Simulation, pp. 1-25, 2004, accepted.

Van lent J., Janssen J. & Vandewalle S.: "Multigrid waveform relaxation for delay partial differential equations", Proceedings of the 5th IFAC International Workshop on Time Delay Systems (Michiels W. and Roose D., eds.), pp. 6, 2004, accepted.

Samaey G., Roose D. & Kevrekidis I.: "Combining the gap-tooth scheme with projective integration: patch dynamics", to appear in a volume of Lecture Notes in Computational Science and Engineering, edited by Løtstedt P., Engquist B. and Runborg O.

More information on the KUL/CS publications can be found at:
http://www.cs.kuleuven.ac.be/~nalag/research/natwdb.html 

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KUL-BioTeC

Bernaerts K. & Van Impe J.F.: “Data driven approaches to the modelling of bioprocesses”, Transactions of the Institute of Measurement and Control, 26(5), 349-372.

Geysen S., Geeraerd A.H., Verlinden B.E., Michiels C.W., Van Impe J.F. & Nicolaï B.M.: “Predictive modelling and validation of Pseudomonas fluorescens growth at superatmospheric oxygen and carbon dioxide concentrations”, in Food Microbiology, 22 (2-3), 149-158.

Valdramidis V.P., Geeraerd A.H., Gaze J.E., Kondjoyan A., Boyd A.R., Shaw H.L. & Van Impe J.F.: “Quantitative description of Listeria monocytogenes inactivation kinetics with temperature and water activity as the influencing factors; model prediction and methodological validation on dynamic data”, selected for the Special Issue following the EU-project QLK1-CT-2001-01415 BUGDEATH, Journal of Food Engineering, submitted.

Miconnet N., Geeraerd A.H., Van Impe J.F., Rosso L. & Cornu M.: “Reflections on the application of primary models to describe challenge tests conducted in/on food products”, under revision.

Smets I.Y., Banadda E.N., Deurinck J., Jenné R. & Van Impe J.F.: “Dynamic modeling of filamentous bulking in lab-scale activated sludge processes”, Journal of Process Control (Special Issue following the DyCops 7 Symposium), submitted.

François K., Devlieghere F., Smet K., Standaert A.R., Geeraerd A.H., Van Impe J.F. & Debevere J.: “Modelling the effect of environmental parameters (temperature, pH & aw) on the individual cell lag phase of Listeria monocytogenes”, The third international symposium on: Applications of Modelling as an Innovative Technology in the Agri-Food Chain (MODEL-IT), Leuven (Belgium), May 29-June 2, 2005, submitted.

Kondjoyan A., Lebert I., Valdramidis V.P., Havet M., Geeraerd A.H., Lebert A. & Van Impe J.F.: “Application of a complete heat-water model to predict microbial growth and inactivation during airflow treatments at the surface of meat products”, The third international symposium on: Applications of Modelling as an Innovative Technology in the Agri-Food Chain (MODEL-IT), Leuven (Belgium), May 29-June 2, 2005, accepted for oral presentation.

Ionescu C. & De Keyser R.: “Towards a Novel Non-invasive Diagnosis Method for the Human Respiratory System”, IEEE-IFMBE Mediterranean Conf. on Medical and Biological Engineering (MEDICON2004), Ischia (Italy), 4p, awarded within the IBM “Young Members competition” contest.

Ionescu C. & De Keyser R.: “Detection of novel respiratory mechanics parameters by means of forced oscillations”, submitted to the 16th IFAC World Congres, Praha (Czech Republic), July 4-8, 2005.

Ionescu C. & De Keyser R.: “Adaptive closed-loop control strategy for paralyzed skeletal muscles”, submitted to the Special Session on Control Aspects in Biomedical Engineering within 3rd IASTED Int. Conf. on Biomedical Engineering (BIOMED05), Innsbruck (Austria), February 16-18, 2005.

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Logist F., Smets I.Y. & Van Impe J.F.: “Optimal control of dispersive tubular chemical reactors: Part I”, submitted to 16th IFAC World Congress (IFAC2005), Prague (Czech Republic), July 4-8, 2005.

Logist F., Smets I.Y., Vande Wouwer A. & Van Impe J.F.: “Optimal control of dispersive tubular chemical reactors: Part II”, submitted to 16th IFAC World Congress (IFAC2005), Prague (Czech Republic), July 4-8, 2005.

Kondjoyan A., Lebert I., Valdramidis V.P., Havet M., Geeraerd A.H., Lebert A. & Van Impe J.F.: “Application of a complete heat-water model to predict microbial growth and inactivation during airflow treatments at the surface of meat products”, accepted for oral presentation to MODEL-IT 2005: the third international symposium on Applications of Modelling as an Innovative Technology in the Agri-Food Chain, Leuven (Belgium), May 29-June 2, 2005.

Valdramidis V.P., Geeraerd A.H., Poschet F., Ly-Nguyen B., Van Opstal I., Eren Özcan S., Van Loey A.M., Michiels C.W., Hendrickx M.E. & Van Impe J.F.: “Model based process optimisation of the combined high pressure and mild heat treatment ensuring safety and quality of a food model system”, submitted.

François K., Devlieghere F., Standaert A.R., Geeraerd A.H., Van Impe J.F. & Debevere J.: “Modelling the individual cell lag phase: effect of temperature, pH and aw on the individual cell lag time distribution of Listeria monocytogenes”, in: P. Raspor, S.S. Mozina, A. Cencic (eds.), Book of Abstracts of the 19th Symposium of the International Committee on Food Microbiology and Hygiene (ICFMH, Food Micro 2004), Portoroz (Slovenia), September 12-16, 2004, p. 187.

Samapundo S., Devlieghere F., De Meulenaer B., Geeraerd A., Mutukumira A.N., Van Impe J. & Debevere J.: “Effect of water activity and temperature on the relationship between growth and fumonisin production by Fusarium moniliforme and F. proliferatum in maize”, in: P. Raspor, S.S. Mozina, A. Cencic (eds.), Book of Abstracts of the 19th Symposium of the International Committee on Food Microbiology and Hygiene (ICFMH, Food Micro 2004), Portoroz (Slovenia), September 12-16, 2004, p. 350.

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Graduate School in Systems and Control

HOUSEHOLDER AWARD XI
(http://www.cse.psu.edu/~zha/householder)

Nominations are solicited for the Alston S. Householder Award XII (2005). The award will be presented to the author of the best dissertation in numerical algebra submitted by the recipient of a PhD earned between January 1, 2001, and December 31, 2004. The term numerical algebra is intended to describe those parts of mathematical research that have both algebraic aspects and numerical content or implications. Thus, for example, the term covers linear algebra that has numerical applications and the algebraic aspects of ordinary differential, partial differential, integral, and nonlinear equations.

To qualify, the dissertation must have been submitted to fulfill requirements for a degree at the level of a United States Ph.D. Candidates from countries in which a formal dissertation is not normally written at that level may submit an equivalent piece of work. The Householder Award, given every three years, was established at the 1969 Gatlinburg Symposium (now renamed the Householder Symposium) to recognize the outstanding contributions of Alston S. Householder, 1904-1993, to numerical analysis and linear algebra.

Entries will be assessed by an international committee consisting of James DEMMEL (University of California, Berkeley), Sabine VAN HUFFEL (K.U. Leuven), Volker MEHRMANN (TU Berlin), Charles VAN LOAN (Cornell University), and Olof WIDLUND (Courant Institute, New York University).

The candidate's sponsor (the supervisor of the candidate's research) should submit five copies of the dissertation (or qualifying work), together with an appraisal by the sponsor and at least one additional letter of recommendation supporting the nomination, by February 1, 2005, to:

Professor Olof Widlund
Courant Institute
251 Mercer Street
New York, New York 10012
U.S.A.

The award will be presented at the Householder Symposium XVI, to be held May 23-27, 2005 at the Seven Springs Mountain Resort in Champion, Pennsylvania. Candidates on the short list will receive invitations to the meeting.

Previous Householder Award winners were:
F. ROBERT (Grenoble) in 1971,
Ole HALD (New York University) in 1974,
Daniel D. WARNER (University of California, San Diego) in 1977,
E. MARQUES DE SA' (Coimbra) and Paul VAN DOOREN (K. U. Leuven) in 1981 (shared),
Ralph BYERS (Cornell University) and James M. DEMMEL (University of California, Berkeley) in 1984 (shared),
Nicholas J. HIGHAM (University of Manchester) in 1987,
Alan EDELMAN (Massachusetts Institute of Technology) and Maria Beth ONG (University of Washington) in 1990 (shared),
Hong-Guo XU (Fudan University) and Barry SMITH (New York University) in 1993 (shared),
Ming GU (Yale University) in 1996,
Jorg LIESEN (Bielefeld) in 1999,
Jing-Rebecca LI (Massachusetts Institute of Technology) in 2002.

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Vacancies

Five (5) Vacancies in Control at the Eindhoven University of Technology

At the Eindhoven University of Technology, the 3 control groups in the Electrical and Mechanical Engineering Department cooperate together to form “Eindhoven Control”. Their educational activities include contributions to the bachelor’s and master’s programs of Biomedical, Chemical, Electrical, Physical and Mechanical Engineering, as well as a dedicated master’s program in Systems and Control.

Eindhoven Control has currently 3 full time professors, about 20 members of the permanent scientific staff, about 50 PhD students and about 130 master students. Research focuses on various fundamental issues in systems and control, including data-driven control, nonlinear control, hybrid systems, robust and model predictive control and model approximation. Applications are oriented towards mechanical and electrical systems, the automotive industry, control of industrial processes, and biomedical applications. Contacts and contracts with government agencies and major industries allow state-of-the art research facilities, access to industrial problems and data and sufficient financial funding. About 50% of the funding is contract based. Research activities of Eindhoven Control in the automotive and biomedical applications as well as the activities in the field of embedded systems are part of the research priority programs of Eindhoven University of Technology.

The research and postgraduate educational programs of Eindhoven Control are integrated in the national research school DISC, the Dutch Institute of Systems and Control (http://www.disc.tudelft.nl). DISC supplies dedicated, high-level postgraduate courses for all PhD students in systems and control.

Eindhoven Control has five (5) vacancies at the level of either assistant professor or associate professor.

In the Department of Electrical Engineering, chair Control Systems (Van den Bosch):
1. Hybrid systems, e.g. modeling identification and control of piece-wise affine systems
2. Advanced control of electrical systems, e.g. modeling and control of electrical actuators, intelligent power nets and automotive applications

In the Department of Mechanical Engineering, chair Control Systems Technology (Steinbuch):
3. Robust control and identification, with application to mechanical motion systems
4. Modeling and control of mechanical systems, e.g. automotive applications and mechatronics

In the Department of Mechanical Engineering, chair Dynamics and Control (Nijmeijer):
5. Nonlinear control of mechanical systems, robotics, mechanical applications

Candidates are expected to contribute to the bachelor’s and master’s programs covered by Eindhoven Control at Eindhoven University of Technology. Moreover, candidates may be invited to organize dedicated courses for DISC. To carry out research and to attract PhD students, the candidate is expected to apply for external funding in project or contract-based research.

Candidates are expected to have an academic background at PhD level, preferably in systems and control from an engineering department. The international research achievements of the candidate are manifest from his or her authorship of journal and conference articles. The university system requires that staff members are successful in having their research proposals accepted. In addition to scientific skills, positive social abilities are a necessity. To participate in the bachelor programs, an active understanding of Dutch will be required in due time.

Qualified candidates are cordially invited to express their interest in these vacancies or ask for more detailed information. Depending on experience and capabilities the salary will be assigned within the Dutch salary system for universities (UD or UHD).

For vacancies 1 & 2: please contact Prof.dr.ir. P.P.J. van den BOSCH (p.p.j.v.d.bosch@tue.nl; http://www.cs.ele.tue.nl)
For vacancies 3 & 4: please contact Prof.dr.ir. M. STEINBUCH (m.steinbuch@tue.nl; http://www.wtb.tue.nl)
For vacancy 5: please contact Prof.dr. H. NIJMEIJER (h.nijmeijer@tue.nl; http://www.wtb.tue.nl)

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