Message from the Coordinator

It's the beginning of the vacation period for most of us, and I wish you all a pleasant Summer holiday. But DYSCO never sleeps. Several important conferences are organized during the Summer months, in which many of us participate, some as plenary speakers. In addition, some interesting educational activities take place that are of interest to DYSCO members. I would like, in particular, to draw your attention to the Summer schools given at KUL by Lieven Vandenberghe (a former member of DYSCO, now Professor at UCLA) and at ULg by Christian Lageman: see the details later in this Newsletter.

It is a great pleasure to end this academic year by congratulating two of our DYSCO members who have received scientific awards during the last month. Raphaël Jungers (UCL) has been granted the annual IBM Belgium F.R.S.-F.N.R.S. computing science award for his PhD thesis, and Paul Van Dooren (UCL) has been elected Fellow of the Society for Industrial and Applied Mathematics (SIAM). Details can be found at the end of this Newsletter. Congratulations to Raphaël and Paul.

Michel Gevers
DYSCO coordinator

Staff Movements and Visitors

UCL

• Alexandre Bazanella (Professor, Universidade Federal do Rio Grande do Sul, Brazil) will stay at CESAME between July 9 and July 17.
• Brian Anderson (Distinguished Professor, The Australian National University, Canberra, Australia) will stay at CESAME from August 31 until September 23. Both of them will work with Michel Gevers and his team.
• Raphaël Jungers will leave CESAME at the end of August to carry out a one-year postdoctoral stay at the MIT (Boston, USA).

KUL 1

• Oscar Barrero from 13/04/09 to 10/07/09, visiting fellow (host: Bart De Moor).
• Jorge Lopez Lazaro from 01/06/09 to 31/07/09, fellow (host: Johan Suykens).
• Vladimir Matic from 01/08/09 to 30/09/09, visiting scholar (host: Sabine Van Huffel).
• Elisa Mosconi from 01/03/09 to 31/10/09, international scholar (host: Sabine Van Huffel).
• Ridhi Chaudhary from 10/05/09 to 25/07/09, visiting scholar (host: Marc Moonen).
• Yelisetti Vivek from 10/05/09 to 25/07/09, visiting scholar (host: Marc Moonen).

VUB-ELEC

• Pasquale Napolitano, University of Perugia, department of Electronic and Information Engineering, Italy, from 13/07/09 until 27/07/09.
• Jonas Sjoberg, Chalmers University of Technology, Sweden, from 1/08/09 until 30/06/10.

ULg-SYST

• Denis Efimov has left Ulg/Syst on June 30, 2009.

Theses Defences

UCL

Public defence of the PhD thesis of Cristobald de Kerchove: Ranking large networks: leadership, optimization and distrust, on Thursday August 27, at 2 pm (Auditoire BARB93).

Papers produced by the IAP Network

UCL

Berry M. W., Gillis N., Glineur F., Document Classification Using Nonnegative Matrix Factorization and Underapproximation, Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS), Taipei, Taiwan, May 24-27, 2009, pp. 2782-2785, ISBN: 978-1-4244-3828-0.

Dochain D., Couenne F., Jallut C., Enthalpy based modelling and design of asymptotic observers for chemical reactors, International Journal of Control, 82:8, pp. 1389 - 1403, 2009.

Bastin G., Coron J.-M., d'Andréa-Novel B., On Lyapunov stability of linearised Saint-Venant equations for a sloping channel, Networks and Heterogeneius Media, Vol.4(2), 2009, pp. 177 - 187.

Bedjaoui N., Weyer E., Bastin G., Methods for the localization of a leak in open water channels, Networks and Heterogeneous Media, Vol.4(2), 2009, pp. 189 - 210.

Bastin G., Bayen A.M., D'Apice C., Litrico X., Piccoli B., Open problems and research perspectives for irrigation channels, Networks and Heterogeneous Media, Vol.4(2), 2009, pp. i-v.

KUL 1

Barjas Blanco T., Willems P., Chiang P-K., Cauwenbergh K., De Moor B. and Berlamont J., Flood Regulation by means of Model Predictive Control, in Chapter Intelligent Infrastructures, (Negenborn R.R., Lukszo Z., and Hellendoorn J., eds.), Springer, 2009, pp. 1-30.

Tsiaflakis P., Moonen M., Distributed spectrum coordination for DSL broadband access, Internal Report 09-110, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009.

Sorensen M., De Lathauwer L., Deneire L., An Efficient Jacobi-Type Algorithm for Blind Equalization of Paraunitary Channels, Internal Report 09-111, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Proceedings 17th European Signal Processing Conference (EUSIPCO 2009).

Navasca C., De Lathauwer L., Low Multilinear Rank Tensor Approximation via Semidefinite Programming, Internal Report 09-112, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Proceedings 17th European Signal Processing Conference (EUSIPCO 2009).

Vanderhaegen J., De Smet D., Meyns B., Van de Velde M., Van Huffel S., Naulaers G., Surgical closure of the patent ductus arteriosus and its effect on the cerebral tissue oxygenation, Acta Paediatrica, vol. 97, 2008, pp. 1640-1644.

Serizel R., Moonen M., A Zone of Quiet Based Approach to Integrated Active Noise Control and Noise Reduction in Hearing Aids, Internal Report 09-114, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009.

Vandeput S., Verheyden B., Aubert A.E., Van Huffel S., Nonlinear Heart Rate Variability Analysis of Astronauts before and after Spaceflight by Means of Holter Recordings, Internal Report 09-115, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Journal of Gravitational Physiology.

Vandeput S., Verheyden B., Aubert A.E., Van Huffel S., Modeling the Recovery of the Sympathetic and Parasympathetic Modulation in Astronauts after Short and Long Duration Space Missions, Internal Report 09-116, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Journal of Gravitational Physiology.

Nion D., De Lathauwer L., A Link between the Decomposition of a Third-Order Tensor in Rank-(L,L,1) Terms and Joint Block Diagonalization, Internal Report 09-117, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009.

Valentin L., Jurkovic D., Van Calster B., Testa A., Van Holsbeke C., Bourne T., Vergote I., Van Huffel S., Timmerman D., Adding a single CA-125 measurement to ultrasound imaging performed by an experienced examiner does not improve preoperative discrimination between benign and malignant adnexal masses. A prospective international multicenter study of 809 patients., Internal Report 09-118, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Ultrasound in Obstetrics and Gynecology.

Van Holsbeke C., Van Calster B., Guerriero S., Savelli L., Leone F., Fischerova D., Czekierdowski A., Fruscio R., Veldman J., Van de Putte G., Testa A.C., Bourne T., Valentin L., Timmerman D., Imaging in gynecology: how good are we in identifying endometriomas?, Internal Report 09-119, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Facts, Views & Visions in ObGyn.

Vandenput I., Van Calster B., Capoen A., Leunen K., Berteloot P., Neven P., Vergote I., Moerman P., Amant F., Neoadjuvant chemotherapy followed by intervaldebulking surgery in endometrial cancer with peritoneal spread (stage IV): a new preferred treatment?, Internal Report 09-120, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in British Journal of Cancer.

Van Belle V., Van Calster B., Wildiers H., Van Huffel S., Neven P., Lymph node ratio is a better prognostic predictor for disease free survival than the number of positive lymph nodes in Node-Positive Breast Cancer, Internal Report 09-121, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009. Accepted for publication in Journal of Clinical Oncology.

Logist F., Huyck B., Fabre M., Verwerft M., Pluymers B., De Brabanter J., De Moor B., Van Impe J., Identification and control of a pilot scale binary distillation column, Internal Report 09-123, ESAT-SISTA, K.U.Leuven (Leuven, Belgium), 2009.

Forouzan A., Optimal Spectrum Management of DSL With Nonstrictly Convex Rate Region, IEEE Transactions on Signal Processing, vol. 57, no. 7, July 2009, pp. 2558-2568., Lirias number: 235945.

E. Van Derlinden, I. Lule, K. Bernaerts, J.F. Impe, Quantifying the heterogeneous heat response of E. coli under dynamic temperatures, Journal of Applied Microbiology, accepted, 2009.

F. Logist, P.M. Van Erdeghem, I.Y. Smets, and J.F. Van Impe, Optimal design of dispersive tubular reactors at steady-state using optimal control theory, Journal of Process Control, 19, 1191-1198, 2009.

F. Logist, P.M. Van Erdeghem, and J.F. Van Impe, Efficient deterministic multiple objective optimal control of (bio)chemical processes, Chemical Engineering Science, 64, 2527-2538, 2009.

F. Logist and J.F. Van Impe, Multiple objective optimisation of cyclic chemical systems with distributed parameters, In: Proceedings of the 14th IFAC Workshop on Control Applications of Optimization (CAO-09), CD-ROM 6p, Jyväskylä (Finland), 2009.

F. Logist, P.M.M. Van Erdeghem, and J.F. Van Impe, Multiple objective optimal control of (bio)chemical processes, Accepted for oral presentation at the 14th Belgian-French-German Conference on Optimization, September 14-18 2009, Leuven (Belgium).

J.Bonilla, M. Diehl, F. Logist, B. De Moor, and J. Van Impe, A convex approximation for parameter estimation involving parameter-affine dynamic models, Accepted for oral presentation at the 14th Belgian-French-German Conference on Optimization, September 14-18 2009, Leuven (Belgium).

M. Uyttendaele, P. Busschaert, A. Valero, A.H. Geeraerd, A. Vermeulen, L. Jacxsens, K.K. Goh, A. De Loy, J.F. Van Impe, F. Devlieghere, Prevalence and challenge tests of Listeria monocytogenes in Belgian produced and retailed mayonnaise-based deli-salads, cooked meat products and smoked fish between 2005 and 2007, International Journal of Food Microbiology 133, pp. 94-104, 2009.

E.G. Velliou, P.J. D'Huys, E. Van Derlinden, A.H. Geeraerd, J.F. Van Impe, Adaptation of Escherichia coli K12 at lethal temperatures: consequences of heat pre-treatment of the medium and acidic pre-history, Microbial Stress - from molecules to systems, 7-10 May 2009, Semmering, Austria.

E.G.Velliou, E. Van Derlinden, D. Aerts, E. Nikolaidou, A.H. Geeraerd, J.F. Van Impe, The influence of Trimethylamine-N-Oxide (TMAO) on the heat resistance of Esherichia coli K12 at lethal temperatures, Microbial Stress - from molecules to systems, 7-10 May 2009, Semmering, Austria.

L. Mertens, T.D.T. Dang, A. Vermeulen, A.H. Geeraerd, K. Serneels, P. Moldenaers, F. Devlieghere, J.F. Van Impe, Quantifying the effect of food structure on microbial spoilage characteristics by means of a semi-solid food model system, In: P. Fischer, M. Pollard, E.J. Windhab (Eds.), Proceeding of the 5th International Symposium on Food Rheology and Structure (ISFRS 2009), June 15-18, 2009, Zurich (Switzerland).

Van Impe, Jan F., Cappuyns, Astrid M., and Van Derlinden, Eva, Towards a next generation of predictive models based on systems biology tools, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

Van Derlinden, Eva and Van Impe, Jan F., Describing the heterogeneous heat response of E. coli with a subpopulation type model, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

E.G. Velliou, A. Cappuyns, E. Van Derlinden, A.H. Geeraerd, F. Devlieghere, J.F.Van Impe, The effect of pre-acid shock in the induced heat resistance of Escherichia coli K12 at lethal temperatures, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

A.J. Verhulst, K. Bernaerts and J.F. Van Impe, Robustness analysis of an individual-based model for microbial growth: outcomes and insights, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

P. Busschaert, A.H. Geeraerd, M. Uyttendaele and J.F.M. Van Impe, Assigning distributions representing variability and uncertainty to microbiological contamination data, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

L. Mertens, T. D. T. Dang, A. Creemers, J. Dams, A. Vermeulen, P. Moldenaers, A. H. Geeraerd, F. Devlieghere and J.F. Van Impe, Modeling the growth/no growth interface of Zygosaccharomyces bailii in a viscoelastic food model system, Accepted for presentation on the 6th international conference on Predictive Modeling in Foods, September 8-12, 2009, Washington.

Iris Cornet (Artesis), Julie Vandesteene, Margaretha Peeters, Elsje Pauwels, Astrid Cappuyns, Eva Van Derlinden, Raf Dewil, Jan Van Impe, Dynamics of Simultaneous Saccharification and Fermentation of Cellulose to Ethanol, Book of Abstracts of the Fifth International Conference on Renewable Resources and Biorefineries(RRB5), p. 65 [Fifth International Conference on Renewable Resources and Biorefineries (RRB5), Ghent, Belgium, June 10-12, 2009.

UGent-SYSTeMS

Ionescu C., Derom E., De Keyser R., Assessment of respiratory mechanical properties with constant-phase models in healthy and COPD lungs, Computer Methods in Biology and Medicine, accepted for publication (in print).

De Keyser R., Ionescu C., Lazar C., Frequency-Response based CACSD for Fractional Order Systems, Chapter in New Trends in Nanotechnology and Fractional Calculus Applications, Baleanu et al (Eds), Springer, 2009.

Ionescu C. De Keyser R., Desager K., Derom E., Fractional-Order Models for Characterizing the Impedance of the Respiratory System, Chapter in Advances in Biomedical Engineering, www.intechweb.org/books.php, to appear.

De Geeter N., Ionescu C., De Keyser R., A mechanical model of soft biological tissue- an application to lung parenchyma, accepted for publication in the Proceedings of the IEEE Engineering in Medicine and Biology Conference, Minneapolis, USA, 4-6 September 2009.

R. Hodrea, B. Nour, C. Ionescu, R. De Keyser, Model Reduction for Adaptation in Surgery Anaesthesia, Accepted for publication in the Proceedings of the 7th IFAC Symposium on Modelling and Control in Biomedical Systems, Aalborg, Denmark, 12-14 August 2009.

VUB-ELEC

Vanbeylen L., R. Pintelon and J. Schoukens, Blind maximum-likelihood identification of Wiener Systems, IEEE Transactions on Signal Processing, Vol. 57, No. 8, August 2009.

Pintelon, R., B. Peeters, and P. Guillaume, Multivariate continuous-time operational modal analysis in the presence of harmonic disturbances, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Schoukens, J., K. Barbé, L. Vanbeylen, and R. Pintelon, Nonlinear induced variability in linear system identification, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Harnack, G., L. Lauwers, R. Pintelon, J. Schoukens, Identification of Nonlinear Feedback Systems Using a Structured Polynomial Nonlinear State Space Model, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Paduart, J., L. Lauwers, R. Pintelon, and J. Schoukens, Identification of a Wiener-Hammerstein System Using the Polynomial Nonlinear State Space Approach, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Vanbeylen, L., R. Pintelon and P. de Groen, Blind maximum likelihood identification of Wiener systems with measurement noise, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Lataire, J., and R. Pintelon, Extracting a non-parametric instantaneous FRF of a linear, slowly time-varying system using a multisine excitation, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Barbé, K., R. Pintelon, and J. Schoukens, Asymptotic properties of transfer function estimates using non-parametric noise models under relaxed assumptions, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Vandersteen, G., K. Barbé, R. Pintelon, and J. Schoukens, Bootstrapped total least squares using (circular) overlap for errors-in-variables identification, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Lauwers, L., R. Pintelon, and J. Schoukens, Modelling of Wiener-Hammerstein Systems via the Best Linear Approximation, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Anne Van Mulders, Johan Schoukens, Marnix Volckaert, Moritz Diehl, Two nonlinear optimization methods for black box identification compared, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Schoukens Johan, Suykens Johan, Ljung Lennart, Wiener-Hammerstein Benchmark, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

Sjoberg Jonas E., Schoukens Johan, Estimates of an Upper Limit of the Number of Parameters in Nonlinear Model Structures, 15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France.

J. Schoukens, G. Vandersteen, K. Barbé, R. Pintelon, Nonparametric preprocessing in system identification: a powerful tool, invited plenary presentation at the European Control Conference 2009 - ECC'09, 23-26 August 2009, Budapest, Hungary.

KUL 2

Pipeleers G., Demeulenaere B., Swevers J., Vandenberghe L., Extended LMI characterizations for stability and performance of linear systems, Systems & control letters, 58(7), 510-518, 2009.

De Caigny J., Camino J., Swevers J., Interpolating model identification for SISO linear parameter varying systems, Mechanical Systems and Signal Processing, 2009, to appear.

De Caigny J., Camino J., Oliveira R., Peres P., Swevers J., Gain-scheduled H2 and Hoo Control of Discrete-time Polytopic Time-varying Systems, IET Control Theory and Applications, 2009, to appear.

Demeulenaere B., Verschuure M., Swevers J., De Schutter J., Counterweight Balancing of Complex Planar Linkages: A General and Numerically Efficient Design Framework, Journal of Mechanical Design, 2009, to appear.

Jamaludin Z., Van Brussel H., Swevers J., Friction Compensation of a XY Feed Table using Friction Model-Based Feedforward and an Inverse-Model-Based Disturbance Observer, IEEE Transactions on Industrial Electronics, 2009, to appear.

Pipeleers G., Demeulenaere B., De Schutter J., Swevers J., Generalized repetitive control: relaxing the one-period-delay structure for IET Control Theory & Applications, IET Control Theory and Applications, 2009, to appear.

Demeulenaere B., Pipeleers G., De Caigny J., Swevers J., De Schutter J., Vandenberghe L., Optimal splines for rigid motion systems: a convex programming framework, Journal of Mechanical Design, 2009, to appear.

Jamaludin Z., Van Brussel H., Swevers J., Design of a disturbance observer and model-based friction feedforward to compensate quadrant glitches, In: Ulbrich H., Ginzinger L. (Eds.), Motion and Vibration Control, pp. 143-154, Germany: Springer-Verlag Berlin, 2008.

Witters M., Swevers J., Optimal experiment design for the black box identification of a semiactive damper, IFAC Symposium on System Identification, Saint-Malo, France, 6-8 July 2009.

Volckaert M., Van Mulders A., Schoukens J., Diehl M., Swevers J., Model Based Nonlinear Iterative Learning Control: A Constrained Gauss-Newton Approach, Mediterranean Conference on Control and Automation, Thessaloniki, Greece, 24-26 June 2009.

Van den Broeck L., Diehl M., Swevers J., Performant design of an input shaping prefilter via embedded optimization, Proceedings of the 2009 American Control Conference. St.Louis, USA, 10-12 June 2009.

Pipeleers G., Demeulenaere B., Al-Bender F., De Schutter J., Swevers J., Optimal performance tradeoffs in repetitive control: Experimental validation of an active air bearing setup, Proceedings of the 2009 American Control Conference, St. Louis, USA, 10-12 June 2009.

Verscheure D., Diehl M., De Schutter J., Swevers J., Recursive log-barrier method for on-line timeoptimal robot path tracking, Proceedings of the 2009 American Control Conference, St.Louis, USA, 10-12 June 2009.

De Caigny J., Camino J., Oliveira R., Peres P., Swevers J., A Vibroacoustic Application of Identification and Control for Linear Time-Varying Systems, XIII International Conference on Dynamic Problems in Mechanics, Rio de Janeiro, Brazil, March 2009.

De Caigny J., Camino J., Oliveira R., Peres P., Swevers J., Gain-Scheduled Hoo-Control for Discrete-Time Polytopic LPV Systems Using Homogeneous Polynomially Parameter-Dependent Lyapunov Functions, Proceedings of the 6th IFAC Symposium on Robust Control Design, Haifa, Israel, 16-18 June 2009.

Verscheure D., Diehl M., De Schutter J., Swevers J., On-line time-optimal path tracking for robots, IEEE International Conference on Robotics and automation, Kobe, Japan, May 12-17, 2009.

Loiseau J., Michiels W., Niculescu S., Sipahi R., Topics in time-delay systems, Analysis, algorithms, and control, Springer Verlag, 2009.

Meerbergen K., Fresl K., Knapen T., ''C-plus-plus Bindings to External Software Libraries with Examples from BLAS, LAPACK, UMFPACK, and MUMPS'', ACM Transactions on Mathematical Software, 36(4), 2009.

Vyhlidal T., Michiels W., McGahan P., Zitek P., ''Stability impact of small delays in state derivative feedback applied to vibration suppression'', Control Engineering Practice, 17(3), 382-393, 2009.

Michiels W., Vyhlidal T., Zitek P., Nijmeijer H., Henrion D., Strong stability of neutral equations with an arbitrary delay dependency structure, SIAM journal on control and optimization, 48(2), 763-768, 2009.

Jarlebring E., Hochstenbach M., Polynomial two-parameter eigenvalue problems and matrix pencil methods for stability of delay-differential equations, Linear algebra and its applications, 43(3-4), 369-380, 2009.

Michiels W., Vyhlidal T., Huijberts H., Nijmeijer H., ''Stabilizability and stability robustness of state derivative feedback controllers'', SIAM journal on control and optimization, 47(6), 3100-3117, 2009.

'Huijberts H., Michiels W., Nijmeijer H., Stabilisability via time-delayed feedback: an eigenvalue optimisation approach'', SIAM journal on applied dynamical systems, 8(1), 1-20, 2009.

Michiels W., Fridman E., Niculescu S., Robustness assessment via stability radii in delay parameters, International journal of robust and nonlinear control, accepted, 2009.

Michiels W., Stability analysis of oscillatory systems subject to large delays: a synchronization point of view, Journal of vibration and control, accepted, 2009.

Michiels W., Nijmeijer H., ''Synchronization of delay-coupled nonlinear oscillators: an approach based on the stability analysis of synchronized equilibria'', Chaos, accepted, 2009.

Michiels W., Morarescu I., Niculescu S., Consensus problems with distributed delays, with application to traffic flow models, SIAM journal on control and optimization, 48(1), 77-101, 2009.

Verriest E., Michiels W., Stability analysis of linear systems with stochastically varying delays, Systems & control letters, submitted, 2009.

Verriest E., Michiels W., On moment stability of linear systems with a stochastic delay variation, Lecture notes in control and information sciences, accepted, 2009.

Jarlebring E., Michiels W., Invariance properties in the root sensitivity of time-delay systems with double imaginary roots, Automatica, submitted, 2009.

Van Marcke P., Verleye B., Carmeliet J., Roose D., Swennen R., An improved pore-network model for the computation of the saturated permeability of porous rock, Transport in Porous Media, 2009.

Delvaux S., Van Barel M., Structures preserved by generalized inversion and Schur complementation, Linear algebra and its applications, accepted, 2009.

Chesnokov A., Deckers K., Van Barel M., A numerical solution of the constrained weighted energy problem, TW Reports, TW540, 22 pp. Leuven, Belgium: Department of Computer Science, K.U.Leuven, 2009.

Verleye B., Lomov S., Long A., Verpoest I., Roose D., ''Permeability prediction for the meso-macro coupling in the simulation of the impregnation stage of Resin Transfer Moulding'', Composites, Part A: applied science and manufacturing, 2009.

Gumussoy S., Computing H-infinity Norms of Time-Delay Systems, In : Proceedings of the 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference, 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference. Shanghai, China, 16-18 December 2009.

Gumussoy S., Computing the Pseudospectral Abscissa of Time-Delay Systems, In : IFAC 8th Workshop on Time Delay Systems, IFAC 8th Workshop on Time Delay Systems. Sinaia, Romania, 1-3 September 2009.

Gumussoy S., Multiobjective robust control with HIFOO 2.0, In : IFAC Symposium on Robust Control Design, (Henrion, D., Millstone, M., Overton, M. (Eds.)). IFAC Symposium on Robust Control Design. Haifa, Israel, June 2009.

Vandereycken B., Absil P.-A., Vandewalle S., Embedded geometry of the set of symmetric positive semidefinite matrices of fixed rank, IEEE Workshop on Statistical Signal Processing. Cardiff, Wales, UK, 31 Aug. - 3 Sept. 2009.

Jarlebring E., Michiels W., Invariance properties in the root sensitivity of time-delay systems with double imaginary roots, In : Proceedings of the 8th IFAC Workshop on Time-Delay Systems, 8th IFAC Workshop on Time-Delay Systems. Sinaia, Romania, 1-3 September 2009.

Gumussoy S., Fixed-Order H-infinity Optimization of Time-Delay Systems, 14th Belgian-French-German Conference on Optimization. 14th Belgian-French-German Conference on Optimization, Leuven, Belgium, 14-18 September 2009.

Rosseel E., Vandewalle S., Iterative solvers for the stochastic finite element method, Biennial conference on Numerical Analysis, Glasgow, Scotland, 23-26 June 2009.

Meerbergen K., Padé via Lanczos with multiple right-hand sides, Book of abstracts, CICADA / MIMS workshop on Numerics for Control and Simulation, Manchester, 17 June 2009 (6-6).

Frederix Y., Samaey G., Roose D., A multiscale approach for the solution of Fokker-Planck equations, SIAM Conference on Applications of Dynamical Systems, Snowbird, 17-21 May 2009.

Gumussoy S., Computing H-infinity Norms of Time-Delay Systems, 28th Benelux Meeting on Systems and Control, Spa, Belgium, 16-18 March 2009.

Van Barel M., Frederix K., Large eigenvalue problems and spectral clustering, Numerical Analysis and Scientific Computing with Applications, Agadir, Morocco, 18-22 May 2009.

Michiels W., Delay effects in dynamical systems and networks: analysis and control interpretations, IFAC Conference on Analysis and Control of Chaotic Systems, London, UK, 22-24 June 2009 (Plenary lecture).

ULB

V. Vastemans, M. Rooman, Ph. Bogaerts, A robust method for the joint estimation of yield coefficients and kinetic parameters in bioprocess models, Biotech. Progress, 25 (2009) 606-618.

Benjamin Folch, Yves Dehouck, Marianne Rooman, Thermo- and mesostabilizing protein interactions identified by T-dependent statistical potentials, submitted, 2009.

Thomas Delwiche, Laurent Catoire, Serge Torfs and Michel Kinnaert, Robust fixed-order controller for bilateral teleoperation, Submitted to Mechatronics, 2009.

Study Days, Workshops and Summer Schools

KUL 1

• 6 & 7 July, 2009 - Course on Algorithms for Convex Optimization, Lieven Vandenberghe (UCLA).

Computer Science 05.152, 2:00 pm-5:00 pm

The lectures will give an introduction to some recent algorithms for convex optimization. In particular, we will cover two topics:

(1) Primal-dual interior-point methods for cone programming (linear, second-order cone, and semidefinite programming), as they are implemented in general-purpose software packages.

(2) Accelerated gradient algorithms and related first-order methods for large-scale convex optimization.

• 8 & 9 July, 2009 - Simon Stevin Lecture on Optimization in Engineering - Convex techniques for sparse and low-order model selection, Lieven Vandenberghe (UCLA).

Big Auditorium Ground Floor Computer Science, 5:00 pm-6:00 pm

Abstract:

Optimization problems that involve minimizing the number of nonzeros of a vector, or the rank of a matrix, are common in many fields, including signal and image processing, computer vision, statistics, system identification, and machine learning. In general, these problems are very difficult to solve exactly. Simple convex heuristics, based on replacing the objective with the 1-norm or the nuclear (sum of singular values) have recently attracted wide interest. This interest is motivated by theoretical results that explain the effectiveness of the heuristics, and by the development of new algorithms for very large-scale instances of the resulting convex optimization problems. The first part of the talk will be an overview of some recent developments in this area. In the second part two applications will be discussed in more detail: topology selection in graphical models of time series, and nuclear norm optimization in system identification.

Biographical Information:

Lieven Vandenberghe is Professor in the Electrical Engineering Department at the University of California, Los Angeles (UCLA). He received the electrical engineering degree and a doctorate in applied sciences from the Katholieke Universiteit Leuven (K.U. Leuven), Belgium, in 1987 and 1992, respectively. He joined UCLA in 1997, following postdoctoral appointments at K.U. Leuven and Stanford University, and has held visiting professor positions at K.U. Leuven and the Technical University of Denmark. He is coauthor, with Stephen Boyd, of the book Convex Optimization (2004), and editor, with Henry Wolkowicz and Romesh Saigal, of the Handbook of Semidefinite Programming (2000). He was a recipient of the IEEE Guillemin-Cauer Award in 1990, the Robert Stock Award for Exact and Biomedical Sciences at K.U. Leuven in 1993, a National Science Foundation CAREER Award in 1998, and the TRW Excellence in Teaching Award of the Henry Samueli School of Engineering and Applied Science at UCLA in 2002.

For more information : http://homes.esat.kuleuven.be/~optec/events.php

ULg-SYST

Introduction to Lie groups and homogeneous spaces, minicourse by Christian Lageman.
Dates & schedule : July 13, 15, 17 9:00-12:00.

The goal of this course is to provide an introduction into Lie groups and homogeneous spaces for doctoral students and researchers in engineering.

This course will take place at the Montefiore Institute, Université de Liège, 4000 Liège Sart-Tilman.

If you would like to attend the course or/and to receive more information about its contents, please send an email to christian.lageman@montefiore.ulg.ac.be.

Miscellaneous/Awards

UCL

Raphaël Jungers has been granted the annual IBM Belgium F.R.S.-F.N.R.S. computing science award for his PhD thesis, which was considered the most innovative contribution to the field of computing science.

Paul Van Dooren is among the inaugural Fellows in the Society for Industrial and Applied Mathematics (SIAM) Fellows Program. A SIAM Fellowship is a designation conferred on members distinguished for their outstanding contributions to the fields of applied mathematics and computational science. SIAM is an international community of more than 12,000 individual members, including applied and computational mathematicians, computer scientists, and other scientists and engineers.

IAP Contact Persons

UCL-INMA	Isabelle Hisette
KUL 1	Ida Tassens, Kristel Bernaerts
UGent-SYSTeMS	Margot Roels
VUB-ELEC	Ann Pintelon
KUL 2	Wim Michiels, Jan Swevers
ULg-SYST	Rodolphe Sepulchre
ULB	Michel Kinnaert
FPMs	Alain Vande Wouwer

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