Dimitrios Hristu-Varsakelis


Assistant Professor,
Department of Applied Informatics

Publications

    56. N. Goumagias and D. Hristu-Varsakelis, “A Markov-based Decision Model of Tax evasion by risk-averse firms in Greece”, in Optimization Theory, Decision Making and Operations Research Application, Springer Proceedings in Mathematics v.31, (Proceedings of BALCOR 2011), 2012, to appear.

    55. N. Goumagias and D. Hristu-Varsakelis, “Tax evasion by risk-averse firms in Greece: a discrete Markov-based optimization Model”, Optimization (to appear), 2012.

    54.  D. Hristu-Varsakelis, S. Karagianni, M. Pempetzoglou, A. Sfetsos, “Regional optimization of air pollution in Greece via input-output analysis”, Proc. XIX Int’l Input-Output Conference, June 2012.

    53. N. Goumagias, D. Hristu-Varsakelis, A. Saraidaris, “A Decision Support Model for Tax Revenue Collection in Greece”, Decision Support Systems, Systems vol. 53 (2012), p. 76-96.

    52. D. Hristu-Varsakelis, S. Karagianni, M. Pempetzoglou, A. Sfetsos, “Optimizing production in the Greek Economy: Exploring the Interaction between GHG emissions and Solid Waste via Input-Output Analysis”, Economic Systems Research, 24(1), p. 57-75, 2012.

    51. N. Kostikis, D. Hristu-Varsakelis, M. Arnaoutoglou, C. Kotsavasiloglou, and S. Baloyiannis, “Towards Remote Evaluation of Movement Disorders via Smartphones”, IEEE Engineering in Medicine and Biology Confrence, 2011.

    50. D. Hristu-Varsakelis, S. Karagianni, A Saraidaris, "Equilibrium Conditions in Corporate Tax Competition and Foreign Direct Investment Flows", Economic Modeling, v. 28 (1-2), p. 13-21, 2011.

    49. D. Hristu-Varsakelis and C. Kyrtsou, "Testing for Granger Causality in the presence of Chaotic Dynamics", Brussels Economic Review v.53 (2), p. 323-327, 2010.

    48. D. Hristu-Varsakelis, S. Karagianni, M. Pempetzoglou, T. Sfetsos, "Optimizing Production with energy and GHG emission constraints in Greece: An Input-Output Analysis", Energy Policy, vol 38 (3), p. 1566-1577, 2010.

    47. D. Hristu-Varsakelis, S. Karagianni, M. Pempetzoglou, T. Sfetsos, "Optimizing Production in Greece under GHG emission reduction constraints: a comparison of objective functions", XVII Int’l Input-Output Conference, July 2009.

    46. K. Chalkias, F. Baldimtsi, D. Hristu-Varsakelis, G. Stephanides, " Mathematical Problems and Algorithms for Timed-Release Encryption”,  9ème Colloque Franco-Roumain de Mathématiques Appliquées, Brasov, Romanie, 2008. Also in Bulletin of the University of Brasov, vol 2 (51) 2009.

    45. S. B. Andersson, D. Hristu-Varsakelis, M. Lahijanian, "Observers in Language-Based Control", Communications in Information and Systems, v. 8, n. 2, p., 85-106, 2009.

    44. D. Hristu-Varsakelis, K. Chalkias, and G. Stephanides, “A Versatile Secure Protocol for Anonymous Timed-Release Encryption”, Journal of Information Assurance and Security, vol. 3, no. 5, p. 80-89, June 2008.

    43. K. Chalkias, F. Mpaldimtzi, D. Hristu-Varsakelis and G. Stephanides, “Two types of key compromise impersonation attacks against one-pass key establishment protocols”, Communications in Computer and Information Science, vol 23, Springer, 2008, p.227-238 (extended version of #35).

    42. K. Chalkias, F. Mpaldimtsi, D. Hristu-Varsakelis and G. Stephanides, “An Implementation Infrastructure for Server-Passive Timed-ReleaseCryptography”, Proc. Intl’ Conference on Information Assurance and Security (IAS), p.89-94, 2008.

    41. D. Hristu-Varsakelis, “Short-Period Communication and the Role of Zero-Order Holding in Networked Control Systems”, IEEE Trans. Automatic Control, 53(5), p. 1285-1290, June 2008.

    40. D. Hristu-Varsakelis, S. Karagianni and A. Saraidaris, “Equilibrium Conditions in Corporate Tax Competition and Foreign Direct Investment Flows”, presented at the European Economics and Finance Society Conference, Prague, May, 2008.

    39. D. Hristu-Varsakelis and C. Kyrtsou, “Evidence for Nonlinear Asymmetric Causality in US Inflation, Metal and Stock returns”, Discrete Dynamics in Nature and Society, vol. 2008, Article ID 138547, May, 2008

    38. D. Hristu-Varsakelis and L. Zhang, “LQG Control of Networked Control Systems with Access Constraints and Delays”, International Journal of Control, vol. 81, no. 8, p. 1266-1280, Aug. 2008.

    37. K. Chalkias, D. Hristu-Varsakelis and G. Stephanides, “Improved Anonymous Timed-Release Encryption”, Proc. of  the 12th European Symposium On Research In Computer Security (ESORICS)  LNCS Vol. 4734, p. 311-326, Springer, 2007.

    36. K. Chalkias, F. Mpaldimtzi, D. Hristu-Varsakelis and G. Stephanides, “On the Key-Compromise Impersonation vulnerability of One-pass key establishment protocols”, Int’l Conf. on Security and Cryptography (SECRYPT) 2007, p. 222-228.

    35. D. Hristu-Varsakelis, K. Chalkias and G. Stephanides, “Low-cost Anonymous Timed-Release Encryption”, Proc. of  the Intl’ Symposium on Information Assurance and Security (IAS),  p. 77 - 82 , 2007.

    34. D. Hristu-Varsakelis, “On the Period of Communication Policies for Networked Control Systems, and the Question of Zero-Order Holding”, Proc. of the 46th IEEE Conf. On Decision and Control, 2007.

    33. K. Chalkias, S. T. Halkidis, D. Hristu-Varsakelis, G. Stephanides, and A. Alexiadis, "A Provably Secure One-Pass Two-Party Key Establishment Protocol", Information Security and Cryptology, 3rd International SKLOIS Conference, INSCRYPT, 2007, LNCS vol. 4990, Springer, 2008.

    32. D. Hristu-Varsakelis and C. Shao, "A Bio-Inspired Pursuit Strategy for Optimal Control with Partially-Constrained Final State", Automatica 43(7), pp. 1265-1273, July 2007. Click here for an addendum with additional examples.

    31 D. Hristu-Varsakelis, N. Samaras and C. Shao, “Local pursuit as a Bio-inspired Computational Optimal Control Tool”, Proc. European Control Conference, July 2-5 2007.

    30. D. Hristu-Varsakelis, "Stabilization of Networked Control Systems with Access Constraints and Delays", Proc. of the 45th IEEE Conference on Decision and Control, Dec. 2006.

    29. C. Shao and D. Hristu-Varsakelis "Cooperative Optimal Control: Broadening the Reach of Bio-inspiration", Bioinspiration & Biomimetics  1(1), pp. 1-11, April 2006

    28. W. S. Levine and D. Hristu-Varsakelis, "Some uses for Computer-Aided Control System Design Software in Control Education", IEEE Int'l Symposium on Computer-Aided Control Systems Design, Oct. 2006.

    27. S. Andersson and D. Hristu-Varsakelis, "Symbolic Feedback Control for Navigation",  IEEE Transactions on Automatic Control vol. 51 (6), p. 926-937, June 2006.

    26. L. Zhang and D. Hristu-Varsakelis, "LQG Control under Limited Communication", Proceedings of the 44th IEEE Conference on Decision and Control and the European Control Conference, p.185 - 190, Dec. 2005. 

    25. L. Zhang and D. Hristu-Varsakelis, "Communication and Control Codesign for Networked Control Systems", Automatica 42(6), p. 953-958, June 2006.

    24. D. Hristu-Varsakelis and C. Shao, "Biologically-inspired optimal control: learning from social insects" , International Journal of Control, vol. 77, no. 18, p. 1549-1566, Dec. 2004; See also corrections in D. Hristu-Varsakelis and C. Shao. ”Corrections to: Biologically-inspired optimal control: Learning from social insects”, Int’l Journal of Control, 78(2), p.157, Jan. 2005.

    23.  D. Hristu-Varsakelis and W. S. Levine, "Control of Single-Input Single-Output Systems" , Handbook of Networked and Embedded Control Systems, D. Hristu-Varsakelis and W. S. Levine (eds.), p.21-34, Birkhauser Boston, 2005.

    22.  D. Hristu-Varsakelis, "Feedback Control with Communication Constraints" ,  Handbook of Networked and Embedded Control Systems, D. Hristu-Varsakelis and W. S. Levine (eds.), p.575-599, Birkhauser Boston, 2005.

    21. S. Andersson and D. Hristu-Varsakelis, "Language-based Feedback Control using Monte Carlo Sensing" ,  IEEE Int'l Conference on Robotics and Automation, 2005, p. 3047- 3052.

    20. C. Shao and D. Hristu-Varsakelis, "Bio-inspired optimal control via intermittent cooperation",  Proc. of the American Control Conference, p.1060- 1065, June 2005.

    19. C. Shao and D. Hristu-Varsakelis, "Optimal control through biologically inspired pursuit",  2005 IFAC World Congress.

    18. L. Zhang and D. Hristu-Varsakelis, "Stabilization of Networked Control Systems: Communication and Controller co-design",  2005 IFAC World Congress.

    17. L. Zhang and D. Hristu-Varsakelis, "Stabilization of Networked Control Systems under Feedback-based Communication", Proc. of the American Control Conference, p.2933- 2938, June 2005.

    16. D. Hristu-Varsakelis and W. S. Levine, "An Undergraduate Laboratory for Networked Digital Control Systems", IEEE Control Systems Magazine, vol 25, no 1, p.60-62, Feb. 2005.

    15. D. Hristu-Varsakelis, M. Egerstedt and P. S. Krishnaprasad, "On the Complexity of the Motion Description Language MDLe"  in  IEEE Conference on Decision and Control, p. 3360-5, Dec. 2003. 

    14. S. Andersson and D. Hristu-Varsakelis, "Stochastic Language-based Motion Control" , IEEE Conference on Decision and Control, p. 3313-8, Dec. 2003. 

    13. D. Hristu-Varsakelis and P. R. Kumar, "Interrupt-based feedback control over a shared communication medium", IEEE Conference on Decision and Control, 2002, p. 3223-8. 

    12. M. Egerstedt and D. Hristu-Varsakelis, "Observability and Policy Optimization for Mobile Robots". IEEE Conference on Decision and Control, 2002, p. 3596-3601.

    11.  D. Hristu-Varsakelis and S. Andersson,  "Directed Graphs and Motion Description Languages for Robot Navigation and Control", IEEE Conference on Robotics and Automation, p. 2689-94 vol.3, 2002. 

    10.  D. Hristu-Varsakelis, "Feedback Control Systems as Users of a Shared Network: Communication Sequences that Guarantee Stability".   IEEE Conference on Decision and Control, p. 3631-6 vol.4, 2001. 

    9.  D. Hristu-Varsakelis and R. W. Brockett, "Experimenting with Hybrid Control",  IEEE Control Systems Magazine vol. 22 (1) p.82-95, Feb. 2002  (QuickTime movies the manipulator in action)

    8.  D. Hristu-Varsakelis, "The Dynamics of a Forced Sphere-Plate System",  IEEE Trans. Automatic Control, (46) 5, April 2001, pp.678-687. (Some mpegs of the sphere-plate spin-up problem: spin1.mpg, spin2.mpg)

    7.  D. Hristu, N.J. Ferrier and R. W. Brockett, "The performance of a deformable-membrane tactile sensor: basic results on geometrically-defined tasks", IEEE Int'l Conf. on Robotics and Automation, 2000, p. 508-13 vol.1.

    6.  D. Hristu-Varsakelis, "Robot Formations: Learning minimum-length Paths on Uneven Terrain",  IEEE Mediterranean Conference on Control and Automation 2000.

    5.  D. Hristu, "Stabilization of LTI systems with communication constraints" American Control Conference, 2000, p. 2342-6.

    4.  D. Hristu, "Generalized Inverses for Finite-horizon Tracking". Proc. of the 1999 IEEE CDC, p. 1397-402 vol 2.

    3.  D. Hristu and K. Morgansen, "Limited Communication Control", Systems and Control Letters, 37 (4), p.193-205, July 1999.

    2.  D. Hristu, D. Kontarinis and  R. D. Howe, “A Comparison of Delay and Bandwidth Limitations in Tele-manipulation”, Proc. Int’l Federation for Automatic Control, p. 331-6, June 1996.

    1.  D. Hristu, J. Babb, H. Singh and S. N. Gottschlich, “Position/Force Control of a Multi-fingered Hand: A Comparison of Fuzzy Logic to Traditional PID Control”, IEEE Conference on Intelligent Robots and Systems, p. 1391-8,  1994.

     

     

    Technical Reports

    D. Hristu-Varsakelis,  P. S. Krishnaprasad, F. Zhang, S.Andersson, L. D'Anna, P. Sodre,"The MDle Engine: A Software Tool for Hybrid Motion Control",  Institute for Systems Research, Technical Report TR2000-54. 

    Theses

    1. D. Hristu-Varsakelis, "Optimal Control with Limited Communication", Ph.D. Thesis, Division of Engineering and Applied Sciences, Harvard University, June 1999.

    2. D. Hristu, "Dexterous Manipulation with Multi-fingered Hands", M.Sci. Thesis, Department of Electrical Computer and Systems Engineering, Rensselaer Polytechnic Institute, May 1994.

     

    Patents and Inventions

    K. Hitchcock, D. Hristu-Varsakelis and A. Johnson, "Quadricuspid flow control valve", University of Maryland Invention Disclosure #PS-2004-087.