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International conferences

 

A. P. Aguiar, Michael Athans, António Pascoal. “Convergence Properties of a Continuous-Time Multiple-Model Adaptive Estimator”. In Procs of ECC07 - European Control Conf, Kos, Greece, Jul. 2007.

 

A. P. Aguiar, R. Ghabcheloo, A. M. Pascoal, C. Silvestre, F. Vanni. “Coordinated path following of multiple marine vehicles: Theoretical issues and practical constraints”. In 52nd Internationales Wissenschaftliches Kolloquium (IWK2007), Ilmenau, Germany, Sep. 2007.

 

A. Pedro Aguiar,António M. Pascoal “Coordinated Path-Following Control for Nonlinear Systems with Logic-Based Communication”. In Procs of CDC’07 - 46th IEEE Conf on Decision and Control, New Orleans, LA, USA, Dec. 2007.

 

A. Pedro Aguiar, Reza Ghabcheloo, António Pascoal, Carlos Silvestre. “Coordinated Path-Following Control of Multiple Autonomous Underwater Vehicles”. In Procs of ISOPE’07 - International Society of Offshore and Polar Engineers, Lisbon, Portugal, Jul. 2007.

 

A. Pedro Aguiar. “Multiple-Model Adaptive Estimators: Open Problems and Future Directions”. In Procs of ECC07 - European Control Conf, Kos, Greece, Jul. 2007.

 

Almeida, P. Bencatel, R. Gonçalves, G. Borges Sousa, J. Ruetz, C. “Experimental results on command and control of unmanned air vehicle systems” IAV 2007, Toulouse, France, 3rd -5th Sept 2007.

 

Almeida, P. Bencatel, R. Gonçalves,G. Sousa, J. Pereira,E. Morgado, J. Coutinho, D. “Apollo framework for Unmanned Air Vehicle systems: experimental results”, IAV 2007, Paris, France, 13th -15th Jun 2007.

 

Arutyunov, A, Karamzin, D. Lobo Pereira, F. “A maximum principle under weak assumptions of regularity in mixed constrained problems”, Int. Conf. "Contemporary problems of applied mathematics and mathematical simulation", Voronezh, Russia, 11th -16th Dec 2007.

 

Arutyunov, A., Karamzin, D.Yu., Lobo Pereira ,F., “Necessary optimality conditions in abnormal extremum problems”, Abstracts of International Conf "Extremal Problems in Complex and Real Analysis" (EPCoRA 2007), Moscow, pp. 3, 21st -25th May 2007.

 

Arutyunov, A., Lobo Pereira, F., "Nondegenerate Second-order Necessary Conditions of Optimality for Nonlinear Optimization Problems", EPCORA, Moscow, Russia, 21st -25th May 2007.

 

Azenha, A, “A Radio Frequency Localization for AGV Positioning, /14th Saint Petersburg International Conf on Integrated Navigation Systems”, São Petersburgo, Russia, pp. 301-302, 28Th -30th May 2007.

 

Azenha, A. Carvalho, A, “AGV Control in the presence of Localization Systematical Errors”, /14th Saint Petersburg International Conf on Integrated Navigation Systems/, São Petersburgo, Russia, pp. 225-229, 28Th -30th May 2007.

 

Borges de Sousa, J. Gonçalves, G. “Mixed initiative control of unmanned air and ocean going vehicles: models, tools and experimentation”, RTO AVT-146 Symp., Platform Innovations and System Integration for Unmanned Air, Land and Sea Vehicles, Florence, Italy, 14th – 17th May 2007.

 

Carvalho, J. Carvalho, A, Portugal, P, “Performability Evaluation of Multi-master Profibus-DP Networks in Industrial Relevant Scenarios”, in 7th IFAC Int. Conf. Fieldbuses and Networks in Industrial and Embedded Systems (FeT’2007), Toulouse, France, 7th -9th Nov 2007.

 

Chibante, R. Araújo, A. Carvalho, A, “A Physics-Based Power Diode Model Optimized Through Experiment Based Parameter Extraction”, Procs of 12 th European Conf on Power Electronics and Applications (EPE’07), Aalborg, Denmark, 2nd -5th Sept 2007.

 

Conceição, P. Sousa, Silva, A. Oliveira, D. Moreira, P, “A Nonlinear Model Predictive Control of an Omni-Directional Mobile Robot”, Procs of 2007 IEEE International Symposium on Industrial Electronics, p. 2161-2165, Centro Cultural and Centro Social Caixanova - Vigo, Spain, 4th -7th Jun, 2007.

 

Cruz, N. Matos, A. Cunha, S. Silva, S. "Zarco - An Autonomous Craft for Underwater Surveys", Procs 7th Geomatic Week, Barcelona, Spain, 20th -23rd Feb 2007.

 

de Pinho ,M. d. R., Fontes, Ferreira , Fernando, “A Special Class of Mixed Constrained Optimal Control Problems”, ECC’07, Kos, Greece, 2nd -5th Jul 2007.

 

de Pinho, M. d. R. “Mangasarian-Fromowitz Assumptions and Optimality Conditions for Mixed Constrained Problems”, SIAM -CT07, San Francisco, CA USA, 29th Jun -1st Jul 2007.

 

de Pinho, M. d. R. Ferreira, M.M.A. Fontes, A.C.C. “On Necessary Conditions for State Constrained Problems”, ICIAM 2007-, Zurich, 16th -20th Jun 2007.

 

de Pinho, M. d. R., “On nonregular mixed constrained optimal control problems”, First Joint International Meeting between AMS and PTM, Warsaw, Poland, 31st Jul - 3rd Aug 2007.

 

de Pinho, M. d. R., Ferreira, M.M.A., Fontes A.C.C., “Optimal Control Problems with Nonregular Mixed Constraints”, SSSC07 3rd IFAC Symposium on System, Structure and Control, Foz do Iguaçu, Brazil, 17th- 19th Oct 2007.

 

de Pinho, M. R., Shvarstamn, Ilya, “Regularity properties of optimal control for some mixed constrained problems”, IFIP TC7 2007, Krakow, Poland, 23rd -27th Jul 2007.

 

de Sousa, M, Santos, A, "Active Replication Management of IEC 61499 Applications", IEEE International Conf on Industrial Informatics (INDIN 2007), Vienna, Austria, 24th -26th Jul, 2007.

 

Dedios, L.S. P. Georgieva, Feyo de Azevedo, S. “Non-linear model Predictive Control strategies applied to a fed-batch crystallizer”, Procs Of ECCE-6, European Congress of Chemical Engineering, Book of Abstracts Vol. 1, pp. 565-566, Full Paper in CD-ROM (8 p), Copenhagen, Denmark, 16th -21st Sept 2007.

 

Estevinho, N. Ferraz, A. Rocha,F. Alves, A. Santos, L., “Influence of Interferents in the Analysis of Glucose Aqueous Solutions with Chitosan by HPLC with Evaporative Light Scattering Detection”, Euroanalysis XIV, pp.455-455, 9th -14th Sept 2007.

 

Estrela da Silva, J, Terra ,B, Martins, R, Borges de Sousa, J, “Modeling and Simulation of the LAUV Autonomous Underwater Vehicle”, 13th IEEE IFAC International Conf on Methods and Models in Automation and Robotics, Szczecin, Poland , 27th - 30th Aug 2007.

 

Ferreira, H, Martins, R, Marques, E, Pinto, J. Martins, A, Almeida, J, Borges de Sousa J, Silva, E. “Swordsfish: an autonomous surface vehicle for network centric operations”, Procs Oceans 2007 Conf, Aberdeen, Scotland, 30th Sept– 4th Oct, 2007.

 

Ferreira, H. Martins, R. Marques, E. Pinto, J. Martins, A. Almeida, J. Borges de Sousa,J. Silva, P. “Swordsfish: an autonomous surface vehicle for network centric operations”, Procs Oceans 2007 Conf, Aberdeen, Scotland, 18th -21st Jun, 2007.

 

Ferreira, N. Rocha, F. “On-line measurement of crystal complexity”, European Congress of Chemical Engineering (ECCE-6), Copenhaga pp. 227-228, 16th -20th Sept, 2007.

 

Fontes, A.C.C. Caldeira, A, “Model Predictive Control of Underactuated Mechanical Systems”, RoboMat 2007, Workshop on Robotics and Mathematics, Coimbra, 17th -19th Sept 2007.

 

Fontes, A.C.C. Fontes, B. M. M. “Optimal investment timing using jump price processes, A real options approach”, WMCTF 2007- Workshop on Mathematical Control Theory and Finance, Lisbon, Portugal, 10th -14th Apr 2007.

 

Fontes, A.C.C. Fontes, B. M. M. D, “Optimal timing for market entry”, ICORD-VI - International Conf on Operational Research for Development, Fortaleza, Brazil, 29th -31st Aug, 2007.

 

Francesco Vanni, A. Pedro Aguiar, António M. Pascoal. “Nonlinear Motion Control of Multiple Autonomous Underwater Vehicles”. In Procs of CAMS’07 - The IFAC Conf on Control Applications in Marine Systems, Bol, Croatia, Sep. 2007.

 

Georgieva, P. Oliveira, C. Rocha, F. Feyo de Azevedo, S. (2007), Process modelling strategy combining analytical and data based techniques - I. NN identification of reaction rates, International Joint Conf on Neural Networks (IJCNN), Full paper in CD-ROM (6 p), Orlando, Florida, USA, 12th -17th Aug 2007.

 

Girard, A., Borges de Sousa J, “Modeling team adversarial actions in SEAD operations”, RTO AVT-146 Symp., Platform Innovations and System Integration for Unmanned Air, Land and Sea Vehicles, Florence, Italy, 14th -17th May 2007.

 

Girard, A., Borges de Sousa, J. Estrela da Silva, J. “Autopilots for Underwater Vehicles: Dynamics, Configurations, and Control”, Procs Oceans 2007 Conf, Aberdeen, Scotland, 18th -21st Jun 2007.

 

Girard, A., J. Borges de Sousa, J. Silva, “Autopilots for Underwater Vehicles: Dynamics, Configurations, and Control”, Oceans 2007, Aberdeen, Scotland, 30th Sept - 4th Oct 2007.

 

Gonçalves, G. Seromenho, R. Correia, J. “Wearable computing for patients with coronary diseases”, 2ª Conferência Ibérica de Sistemas e Tecnologias de Informação (CISTI 2007), Portugal, 21st -23rd Jun 2007.

 

Gonçalves, R, de Pinho, M.d.R. Borges de Sousa, J., “An Applet for Optimal Control Problems, 4th WSEAS/IASME Int. Conf. on Engineering Education, Crete, Greece, 24th -26th Jul 2007.

 

Gonçalves, R. Sousa, A. Gonçalves, G. Sousa, J. Dias, P. “Real-time Projection of Video Images in Virtual Scenarios”, Innovative Development Trends in VR/AR Technology, 10th IFF Science Days, 27th -29th Jun 2007.

 

Gonçalves; R. Gonçalves G. Borges de Sousa, J. “An Applet for Optimal Control Problems”, Procs 4th Conf Virtual Reality and Augmented Reality for Engineering, Testing and Operation Technical Systems, 27-28 Jun 2007.

 

Guedes, R, Sousa, A, “Efficient Robotics using the Lego NXT Platform and .NET, EPIA 07 - IRobot, Guimarães, Portugal, 3 -7 Dec 2007.

 

Henrique, B. Gonçalves, F. Soares, S, Adriano, C ‘Core Power Losses Characterization Based on Inverter/Induction Machine Design’, in Procs EPE 2007- 12th EPE Conf, Aalborg, Denmark, 2nd -5th Sept 2007.

 

Lima, L. Gonçalves, C. Moreira, P, “Interactive Educational Software for Dynamic Systems Control”, ICEE 2007 – International Conf on Engineering Education, Coimbra, Portugal, 3-7 Sept. 2007.

 

Lobo Pereira, F, Leite, J, "Necessary Conditions of Optimality for Impulsive Control Problems with State Constraints", European Control Conf, Kos, Greece, 2-5 Jul 2007.

 

Lobo Pereira, F, Leite, J. “Necessary conditions of optimality for measure driven differential inclusions”, The 3rd International IEEE Scientific Conf on Physics and Control - PhysCon 2007, Potsdam, Poland, 3-7 Sept 2007.

 

Lobo Pereira, F, Silva, G, “Optimality Conditions for Asymptotically Stable Control Systems”, SIAM Conf. on Control and Its Applications, S. Francisco, CA, USA, 29th Jun -1st Jul 2007.

 

Lobo Pereira, F. "Some Recent Developments in Necessary Conditions of Optimality for Impulsive Control Problems" 47th IACAS, Israel Annual Conf on Aerospace Sciences, Haifa and Tel-Aviv, Israel, Feb 2007.

 

Lopes dos Santos P, Ramos, J, Martins de Carvalho, J. “Identification of Linear Parameter Varying Systems Using an Iterative Deterministic-Stochastic Subspace Approach”, ECC-2007, pp 4867-4873, Kos, Greece, 2 nd -5th Jul, 2007.

 

Lopes dos Santos, P., J. Ramos., A, “Derivation of a Bilinear Kalman Filter with Autocorrelated Inputs”, 46th CDC Conf, New Orleans, USA, 12th -14th Dec. 2007.

 

Lopes S, Fontes, F, “Nondegenerate Necessary Conditions for Optimal Control Problems with State Constraints: Integral-Type Constraint Qualification”, ECC2007, Kos, Greece, 2nd -5th Jul 2007.

 

Lopes, F. A. C. C. Fontes, S, de Pinho, M.R., “Necessary Conditions of Optimality for Control Problems with State Constraints: Avoiding degeneracy with an integral-type constraint qualification”, Optimization 2007 – Porto, Portugal, 22nd -25th Jul 2007.

 

Lopes, S, Fontes, A.C.C. “Nondegenerate Necessary Conditions for Nonlinear Optimal Control Problems with Higher-Index State Constraints”, ICIAM 2007, Zurich, 16th -20th Jun 2007.

 

Lopes, S., Fontes, A.C.C., “On the degeneracy phenomenon in optimization problems with inequality constraints”, ORP3 2007- Operational Research Peripatetic Post-Graduate Programme, Guimarães, Portugal, 12th -15th Sept 2007.

 

Loureiro, S, Gomes, R, Lobo Pereira, F, "An impulsive framework for the control of hybrid systems", Decision and Control Conf, New Orleans, LA, USA, 12th -14th Dec 2007.

 

Marques, E. Pinto, J. Kragelund, S, Dias, P. Madureira, L. Sousa, A. Correia, M. Ferreira, H. Gonçalves, R. Martins, R. Horner, D. Healey, J. Gonçalves, Sousa, G. J. B. “AUV Control and Communication using Underwater Acoustic Networks”, in Procs Oceans Europe’07 Conf, Aberdeen, Scotland, 30th Sept - 4th Oct 2007.

 

Marques, E. Pinto, J. Kragelund, S. Dias, P. Madureira, L, Sousa, A, Ferreira, H. Gonçalves, R. Horner, D. Healey, A. G. Gonçalves, Borges de Sousa, J. “AUV control and communication using underwater acoustic networks”, Procs Oceans 2007 Conf, Aberdeen, Scotland, 18th -21st Jun 2007.

 

Martins, A, Almeida, J, Almeida, C, Figueiredo, A, Santos, F, Bento, Domingos, H, Silva, E, "Forest fire detection with a small fixed wing autonomous aerial vehicle", Procs IAV'07 International Autonomous Vehicles Conf, Toulouse, France, 3rd - 5th Sept 2007.

 

Martins, A, Ferreira, H, Almeida, C, Silva, H, Almeida, J, Silva, E, "ROAZ and ROAZ II Autonomous Surface Vehicle Design and Implementation", International Life saving Congress 2007, La Coruna, Spain, 1st -2nd Dec, 2007.

 

Martins, A, Ferreira, H, Silva, H, Dias, S, "Autonomous Surface Vehicle Docking Manoeuvre with Visual Information", Procs ICRA07 International Conf on Robotics and Automation, Rome, Italy, 10th -14th Apr 2007.

 

Martins, A, Figueiredo, B, Silva, E, "Vision based Autonomous Surface Vehicle and Autonomous Aerial Vehicle relative positioning and cooperation", NATO AVT (Advanced Vehicle Technology Panel) Symposium on Platform Innovations and System Integration for Unmanned Air, Land and Sea Vehicles, Florence, Italy, 14th -17th May 2007.

 

Martins, M.. Rocha, F., Damas, A.M. “Fundamentals of water equilibration rates used to improve the quality of protein crystals”, Recent Advances in Macromolecular Crystallization (RAMC 2007), San Diego, USA, pp. 66, 23rd -26th Sept 2007.

 

Martins, M., Rocha, P., Rein, F., “Using Volumetric Growth Rates to Characterize Sucrose Crystallization”, Sugar Industry Technologists, SIT, Baltimore, USA, #934, 6th -9th May 2007.

 

Martins, M., Rocha, F.A., Rein, P. “Spiral nucleation model - Fundamentals and application to crystal growth results”, British Association for Crystal Growth (BACG) Conf 2007 & Bernal Symposium, Dublin, Ireland, pp. 30, 3rd -4th Sept 2007.

 

Matos, N, "Coordinated Operation of Autonomous Underwater and Surface Vehicles", Procs MTS-IEEE Oceans'2007, Vancouver, Canada, 29th Sept - 4th Oct 2007.

 

Moraes, R, Portugal, P, Vitturi, S, Vasques, F, Ferreira do Souto, P, “Real-Time Communication in IEEE 802.11 Networks, Timing Analysis and a Ring Management Scheme for the VTP-CSMA Architecture”, in LCN 2007- 32nd Annual IEEE Conf on Local Computer Networks, Dublin, Ireland, 15th -18th Oct 2007.

 

Outeiro M. T, Chibante, R. Carvalho, A. Almeida, T. “Dynamic modelling and simulation of an optimized proton exchange membrane fuel cell system”, ASME International Mechanical Engineering Congress and Exposition (IMECE’07), Seattle, Washington, 11th -15th Nov 2007.

 

Outeiro, M. T., Chibante R, Carvalho A.S., Almeida. T. “Parameters Optimization of a PEM Fuel Cell Through a Random-Search Technique”, Procs of 2nd International Conf on Electrical Engineering (CEE'07), pp. 361-368, Coimbra, Portugal, Nov 26-28, 2007.

 

Outeiro, M. T., Chibante, R., Carvalho, A., Almeida, T., “Dynamic modeling and simulation of an optimized proton exchange membrane fuel cell system”, 10th Portuguese-Spanish Congress in Electrical Engineering (XCLEEE), Madeira, Portugal, 5th -7th Jul 2007.

 

P. Rocha, C. Sousa, T. Mendonça, “Control of uncertain compartmental systems”, Procs Mediterranean Control Conf, MED 2007, Athens, Greece, 2007, 6 pp.P. Rocha. “An algorithm for SDV representation of 2D behaviors” - Procs 2007 International Workshop on Multidimensional (nD) Systems, NDS 2007, Aveiro, Portugal, 2007, 6pp.

 

P. Rocha, H. Alonso, T. Mendonça, “A contribution to the use of Hopfield neural networks for paramater estimation”, Procs European Control Conf, ECC 2007, Kos, Greece, 2007, 6 pp.

 

P. Rocha, I. Brás, “An algorithm for SDV representation of 2D behaviors”, Procs 2007 International Workshop on Multidimensional (nD) Systems, NDS 2007, Aveiro, Portugal, 2007, 6pp.

 

P. Rocha, J.C.Aleixo “A note on behavioral reachability”, Procs European Control Conf, ECC 2007, Kos, Greece, 2007, 6 pp.

 

P. Rocha, T. Mendonça, H. Magalhães, J. Lemos and S. Esteves. ”Multiple Model Adaptive Control of Neuromuscular Blockade: Design Guidelines and Clinical Cases”, Procs European Control Conf, ECC 2007, Kos, Greece, 2007, 6 pp.

 

P.Rocha, J. C. Aleixo “Reconstructibility and forward-observability of behaviors over Z”- Procs 3rd IFAC Symposium on System Structure and Control, IFAC SSSC´07, Iguassu Falls, Brazil, 2007.

 

Pereira, F. A. C. C. F P, Fontes, B. M. M. D, “A Genetic Algorithm Approach to the Allocation of TV Self-Promotion Space, EURO 2007, 22nd European Conf on Operational Research, Prague, Check Republic, 8th -11th Jul 2007.

 

Pereira, F., Fontes, A.C.C., Fontes, B.M.M.D, “An Evolutionary Algorithm Approach for Planning Promotion Time-Slots”, Optimization 2007, Porto, Portugal, 22-25 Jul 2007.

 

Pereira, P., Fontes, A.C.C. Fontes., B. M. M.D, “A Decision Support System for Planning Promotion Time-slots”, OR2007 Operations Research 2007, Saarbrücken, Germany, 5th -7th Sept 2007.

 

Prabhu, Vinayak, Minimum-time reachability in timed games, 34th International Colloquium on Automata, Languages, and Programming, Wroclaw, Poland, 2007.

 

Ramos, C. Martins, A. Carvalho, A, “Rotor Current Controller with Voltage Harmonics Compensation for a DFIG Operating under Unbalanced and Distorted Stator Voltage”, Procs 32nd Annual Conf of the IEEE Industrial Electronics Society, IECON’07, Taipe, Taiwan, 5-8 Novr 2007.

 

Ramos, J., Lopes dos Santos ,P., “Mathematical Modeling, System Identification, and Controller Design of a Two Tank System”, 46th CDC Conf, New Orleans, USA, 12-14 Dec. 2007.

 

Reis, N., Mena, P., Rocha, F., Vicente, A. J, Teixeira, J., “The bubble size distribution and O2 mass transferi in an oscillating, meso-scale tube”, 6th International Conf on Multiphase Flow, ICMF 2007, Leipzig, Germany, 9th – 13th Jul 2007.

 

Reis, N., Mena, C., Vicente, A., Teixeira, A., Rocha, A. “The intensification of gas–liquid flows with a periodic, constricted oscillatory-meso tube”, 8th International Conf on Gas-Liquid & Gas-Liquid-Solid Reactor Engineering, GLS-8, T-6/207, New Delhi, Índia, 16– 19 Dec, 2007.

 

Reza Ghabcheloo, A. Pedro Aguiar, António M. Pascoal, Carlos Silvestre. “Synchronization in multi-agent systems with switching topologies and non-homogeneous communication delays”. In Procs of CDC’07 - 46th IEEE Conf on Decision and Control, New Orleans, LA, USA, Dec. 2007.

 

Rita Cunha, Carlos Silvestre, João Hespanha, A. Pedro Aguiar. “Vision-based control for rigid body stabilization”. In Procs of CDC’07 - 46th IEEE Conf on Decision and Control, New Orleans, LA, USA, Dec. 2007.

 

Roque, M., Fontes, F. A. C. C., Fontes, D. , “Valuing the Pumped Storage Option in Electric Power Systems”, Optimization 2007 – Porto, Portugal, 22nd -25th Jul 2007.89.

 

Seromenho, R. Gonçalves, G. Correia, J. “Intelligent Wearable System for Continuously Monitoring the Heartbeat”, IADIS International Conf Intelligent Systems and Agents 2007 (ISA 2007), Portugal, 3rd -5th Jul, 2007 (poster).

 

Shvartsman, Ilya, de Pinho, M.d.R. “Regularity Properties of Optimal Control for Mixed Constrained Problems”, SIAM - CT07, San Francisco, CA, USA, 29th Jun -1st Jul 2007.

 

Silva, S. Cunha, S. Matos, A, Cruz, N. "An Autonomous Boat Based Synthetic Aperture Sonar", Procs MTS-IEEE Oceans'2007, Vancouver, Canada, 29 Sept - 4 Oct 2007

 

.Silva, S. Cunha, S. Matos, A. Cruz, N., "An In-SAS System for Shallow Water Surveying", Procs 7th Geomatic Week, Barcelona, Spain, 20th -23rd Feb 2007.Sousa, J., Gonçalves, G., “Unmanned vehicles for environmental data collection”, Procs NATO/CCMS Pilot Project on "Clean Products and Processes", Portugal, 5-9 May 2007.

 

Thomas Brihaye, Thomas A. Henzinger, Vinayak S.Prabhu, Jean-François Raskin, “Minimum-time reachability in timed games,” Procs 34th International Colloquium on Automata, Languages, and Programming (ICALP), LNCS 4596, Springer-Verlag, 2007, pp. 825-837.

 

Thomas Brihaye, Thomas A.Henzinger, Vinayak S.Prabhu, Jean-François Raskin, "Minimum-time reachability in timed games," UC Berkeley Technical Report No. UCB/EECS-2007-47 (2007). 15 pages.

 

Tisserant, E, de Sousa, M, "An Open Source IEC 61131-3 Integrated Development Environment", IEEE International Conf on Industrial Informatics (INDIN 2007), Vienna, Austria, 24th -26th Jul, 2007. 

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