Quick Overview of the Group

last update: summer 2008

Matthieu Bouget

Short CV

  • 2004-now Phd student in the TCS-Sensor lab
  • 1999-2004 MSc in Mathematics-Informatics (University of Geneva)

Publication list

  • Numerical Estimation of the Impact of Interferences on the Localisation Problem in Sensor Networks

M. Bouget, P. Leone and J. Rolim
accepted for publication

Research interests

Distributed Computing

  • Wireless Sensor Networks
  • Probabilistic Study of Localisation Phase

Thibaud Guenegou

Short CV

  • 2004-2006 Master in Computer Science at Paris (MPRI)
  • Since 2003 Student of ENS Cachan (France)

Research interests

  • Automata
  • Distributed Algorithms
  • Networks

Taras Holotyak

Short CV

  • january 2006 - present Research Assisstant in Computer Sciences, Computer Science Department, University of Geneva, Switzerland
  • July 2005 – December 2005 - Associate Professor, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine
  • April 2005 – July 2005 - Senior Lecturer, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine
  • May 2003 – March 2005 - Postdoctoral Research Scientist, Department of Electrical and Computer Engineering, SUNY at Binghamton, USA
  • October 2004 – April 2005 - Senior Scientific Researcher, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine
  • October 2003 – October 2004 - Senior Lecturer, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine
  • January 2001 – September 2003 - Assistant Professor, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine
  • November 1997 - December 2000 - PhD student in electrical engineering, Radio Electronic Devices and Systems Department, Lviv Polytechnic National University, Ukraine

Recent Publications

  • I.Prudyus, T.Holotyak, L.Lazko, Multilevel data fusion in multichannel imaging systems, in SPIE proceedings “Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments”, vol. 6159, 2006, pp. 1076-1080 . (extended version of paper I.Prudyus, T.Holotyak, L.Lazko, Multilevel data fusion in multichannel imaging systems, Proceeding of Symposium on Signal Processing, Wilga-2005, Jun 2-5, 2005).
  • M.Goljan, J.Fridrich, T.Holotyak, New Blind Steganalysis and its Implications, in Proc. SPIE Electronic Imaging, Photonics West, San Jose, CA, January 2006
  • T. Holotyak, J.Fridrich, S. Voloshynovskiy. Blind Statistical Steganalysis of Additive Steganography Using Wavelet Higher Order Statistics, in Proc. of the 9th IFIP TC-6 TC-11 Conference on Communications and Multimedia Security, Sep. 19-21, 2005, Salzburg, Austria
  • I.Prudyus, Ye.Klepfer, L.Lazko, T.Holotyak. Non-linear restoration and sparse antenna arrays in radiometry imaging systems, Academic Journal of Lviv Polytechnic State University “Radio Electronics and Telecommunications”, 2005, (in Ukrainian).
  • I.Prudyus, T.Holotyak, L.Lazko, Multilevel data fusion in multichannel imaging systems, Proceeding of Symposium on Signal Processing, Wilga-2005, Jun 2-5, 2005.
  • I.Prudyus, T.Holotyak, L.Lazko, Yu. Shapovalov. Data Fusion Methods in Multichannel Systems, Proceedings of 8th International Conference on The Experience of Designing and Application of CAD Systems in Microelectronics, CADSM’2005, February 23-26, 2005, Lviv-Polyana, Ukraine, pp. 483-484.
  • T. Holotyak, J. Fridrich, D. Soukal, Stochastic Approach to Secret Message Length Estimation in ±k Embedding Steganography, in Proceedings of EI SPIE San Jose, CA, January 16-20, 2005.
  • J. Fridrich, M. Goljan, D. Soukal, and T. Holotyak, Determining the Stego Key for Spatial Domain Steganography, in Proceedings of EI SPIE San Jose, CA, January 16-20, 2005.

Research interests

  • Sensor networks
  • Information hiding (steganography, steganalysis, digital watermarking),
  • Information theory,
  • Coding theory,
  • Stochastic image and signal processing,
  • Stochastic pattern recognition,
  • Modeling of human visual system,
  • Radar and radiometry imaging systems,
  • Antenna design and sensor planning for imaging applications

Aubin Jarry

Short CV

  • 2005-2006 Postdoc researcher in the TCS-Sensor lab
  • 2005 PhD in Computer Science (University of Nice)
  • 1998-2002 Master in Computer Science (Ecole Normale Supérieure de Lyon)

Recent Publications

  • An Optimal Data Propagation Algorithm for Maximizing the Lifespan of Sensor Networks.
    A. Jarry, P. Leone, O. Powell and J. Rolim. submitted to DCOSS 2006.
  • Gradient Based Routing in Wireless Sensor Networks: a Mixed Strategy.
    O. Powell, A. Jarry, P. Leone and J. Rolim. submitted to Algotel 2006.
  • On the Minimum Number of Edges of 2-connected Graphs.
    A. Jarry and A. Laugier.
    to appear in GT04 special volume 2005.
  • Virtual Network Embedding in the Cycle.
    S. Choplin, A. Jarry and S. Pérennes. Discrete Applied Maths 2005.
  • Complexity of Minimum Spanning Tree in Evolving Graphs and the Minimum-Energy Broadcast Routing Problem.
    A. Ferreira and A. Jarry. Proceedings of WiOpt 2004.
  • Integral Symmetric 2-commodity flows.
    A. Jarry. Proceedings of STACS 2004.
  • Connectivity in Evolving Graphs with Geometric Properties.
    A. Jarry and Zvi Lotker. Proceedings of DIALM-POMC 2004.
  • Computing Shortest, Fastest, and Foremost Journeys in Dynamic Networks.
    Binh Bui-Xuan, A. Ferreira and A. Jarry. International Journal of Foundations of Computer Science 2003.
  • Disjoint Paths in Symmetric Digraphs.
    A. Jarry and S. Pérennes. Proceedings of Sirocco 2002.

Research Interests

  • Graph Theory and Combinatorial Optimization
  • Flow and Routing algorithms
  • Dynamic aspects of networks

Pierre Leone

Short CV

  • since March 2005 Assistant Professor, Computer Science Department University of Geneva
  • 2004-2006 Postdoc researcher in the TCS-Sensor Lab and Scientific Adjoint University of Applied Sciences Western Switzerland
  • 2003 Visiting Lecturer, Mathematics Department University of Auckland New Zealand
  • 2000-2002 Scientific Adjoint, University of Applied Sciences Western Switzerland
  • 1995-2000 PhD in Mathematics, Symplecticity and Symmetry of General Integration Methods.
  • 1990-1995 MsC in Mathematics, University of Geneva
  • 1984-1995 Diploma in Engineering Computer Science, University of Applied Science Western Switzerland

Selected Recent Publications

  • An Optimal Data Propagation Algorithm for Maximizing the Lifespan of Sensor Networks (with A. Jarry, O. Powell, J. Rolim)

submitted for publication

  • Gradient Based Routing in Wireless Sensor Networks: a Mixed Strategy (with O. Powell, A. Jarry, J. Rolim)

submitted for publication

  • Energy Optimal Data Propagation in Sensor Networks (with O. Powell, J. Rolim)

journal version submitted for publication

  • Numerical Estimation of the Impact of Interferences on the Localization Problem in Sensor Networks (with M. Bouget, J. Rolim)
    to appear in the proceeding of the WEA06 (2006)
  • An Adaptive Blind Algorithm for Energy Balanced Data Propagation in Wireless Sensors Networks (with S. Nikoletseas, J. Rolim)
    IEEE International Conference on Distributed Computing in Sensor Systems, Marina Del Rey, California, June (2005), Lecture Notes in Computer Science, Springer-Verlag.
  • A Framework for Probabilistic Numerical Evaluation of Sensor Networks: A Case Study of a Localization Protocol (with P. Albuquerque , C. Mazza, J. Rolim)
    Fourth International Workshop on Experimental and Efficient Algorithms, Santorini, Greece, May (2005), Lecture Notes in Computer Science, Springer-Verlag. To be published in to the Special Issue of the ACM Journal of Experimental Algorithmics (JEA) devoted to selected best papers of WEA05.
  • Towards a Dynamical Model for Wireless Sensor Network (with J. Rolim)
    Theoretical Computer Science Journal, vol. 344, pp. 69-85, (2005).
  • A Hybrid Lattice Boltzmann Finite Difference Scheme for the Diffusion Equation (with P. Albuquerque, D. Alemani, B. Chopard), International Journal for Multiscale Computational Engineering, Special Issue (2005).
  • Order conditions and symmetry for two-step hybrid methods (with R. Chan, A. Tsai)
    International Journal of Computer Mathematics, August (2004)

Research Interests

  • Dynamics of Sensor Networks
  • Discrete Numerical Analysis and Simulation of Networks
  • Probabilistic and Distributed Algorithms
  • Numerical Analysis and Simulations

Andrei Marculescu

Short CV

Research interests

  • Distributed Algorithms
  • Sensor Network Simulation

Olivier Powell

Short CV

  • 2006 Going (soon) to the University of Patras for a post-doc (June 2006)
  • 2005-2006 Postdoc researcher in the TCS-Sensor lab
  • 2005 PhD in Computer Science (University of Geneva)
  • 1994-1999 MSc in Pure Maths (University of Geneva)

Recent publications

  • An Optimal Data Propagation Algorithm for Maximizing the Lifespan of Sensor Networks
    A. Jarry, P. Leone, O. Powell and J. Rolim
    submitted for publication to DCOSS’06
  • Gradient Based Routing in Wireless Sensor Networks: a Mixed Strategy
    O. Powell, A. Jarry, P. Leone and J. Rolim
    submitted for publication to ALGOTEL’06
  • Energy Optimal Data Propagation in Sensor Networks
    O. Powell, P. Leone and J. Rolim
    journal version submitted to JPDPC
  • Almost Completeness in Small Complexity Classes
    O. Powell,
    Journal version to appear in TOCS (Theory of Computing System)
  • Resource-bounded Measure, Randomness and Almost Completeness in Small Complexity Classes
    O. Powell, PhD dissertation (2005).
  • A note on Measuring in P]]
    O. Powell
    Theoretical Computer Science, 2004
  • PSPACE Contains Almost Complete Problems
    O. Powell
    ECCC Electronic Colloquium on Computational Complexity, 2003.
  • Measure on P Revisited
    O. Powell
    ECCC Electronic Colloquium on Computational Complexity, 2002

Research interests

  • Distributed Computing
    • Wireless Sensor Networks
    • Data Propagation Algorithms
    • Secured Wireless Sensor Networks
  • Theoretical Computer Science>
    • Computational Complexity Theory
    • Lutz’s Resource bounded Measure
    • Kolmogorov Algorithmic Information Theory

Michael Weiss

Short CV

  • 2003-2008 Phd in the TCS-Sensor lab
  • 1999-2003 MSc in Mathematics (University of Geneva)

Publication list

  • Universal strong tiling for systems

G. Lafitte and M. Weiss
submitted for publication

  • Universal tiling

G. Lafitte and M. Weiss
Journal version submitted for publication

Research interests

  • Wang tiling
  • Computability
  • Complexity

Marios Karagiannis

Short CV

2008 Teaching assistant - University of Geneva - Concurrent and Distributed Systems
2008 Teaching assistant - University of Geneva - Distributed Computing with Wireless Sensor Networks
2007-today Research assistant - University of Geneva - Teorethical computer science and Sensor Networks Laboratory
2006 MSc in Informatics(University of Edinburgh, UK)
2000-2004
Degree in Informatics Engineering(Technical Educational Institute of Athens, Greece)

Research interests

  • Wireless Sensor Networks
    • Geographic routing algorithms
    • Network simulation techniques
    • Localization algorithms

Luminita Moraru

Short CV

2006 Research assistant - University of Geneva - Teorethical computer science and Sensor Networks Laboratory
July-September 2005 Research assistant at the Laboratory of Fundamental Informatics of Lille (LIFL), France
2005-2004 Master Research in Computer Science - University of Science and Technology of Lille (USTL), France - Embedded Systems Section
February –June 2005 Internship at SAP Research Labs France
May-July 2004 Internship at LIFL, Lille, France
2004-2000 Engineering diploma at ‘Politehnica’ University of Bucharest - Department of Automatic Control and Computer Science
2002-2001 Cisco Networking Academy Program (CNAP) (4 semester)

Recent Publications

QoS Preserving Topology Advertising Reduction for OLSR Routing Protocol for Mobile Ad Hoc Networks. L. Moraru and D. Simplot-Ryl. In Proc. 3rd Annual Conference on Wireless On demand Network Systems and Services (WONS 2006), Les Ménuires, France, 2006.

Using Sensor and Location Information for Context-Aware Access Control. L. Gomez, L. Moraru, D. Simplot-Ryl and K. Wrona. In Proc. International Conference on “Computer as a tool” (EUROCON 2005), Belgrade, Serbia & Montenegro, 2005.

Research interests

  • Mobile ad-hoc and sensor networks
    • routing (QoS)
    • security (DoS attacks, cryptographic primitives, access control)
    • localization (probabilistic models)