## Papers in the Proceedings of the National Conferences

NC001 - J. Awrejcewicz, 'The influence of the external force on the stability of the limit cycles', Proceedings of the Symposium 'Experimental Investigations in Mechanics', Warsaw, 1984, 14-19.

NC002 - J. Awrejcewicz, 'Sensitivity of the limit cycles on amplitude and frequency of the external force', Proceedings of the 10th National Congress in Mechanics, Warsaw, 1984, 347-355.

NC003 - J. Awrejcewicz, 'Self-excited vibrations modelling between two bodies with relative motion taking into account the elasticity of contacts', Proceedings of the 24th Symposium 'Modelling in Mechanics', Gliwice, 1985, 27-34.

NC004 - W. Wodzicki, J. Awrejcewicz, 'Identification of the mechanical rotating system with some masses', Proceedings of the 24th Symposium 'Modelling in Mechanics', Gliwice, 1985, 479-486.

NC005 - J. Awrejcewicz, 'Local bifurcation and methods of their analysis', , The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 8-25, in Polish.

NC006 - J. Awrejcewicz, 'Analytical-numerical method to a study of the nonlinear-continuous systems', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 38-45, in Polish.

NC007 - J. Awrejcewicz, B. Blazejczyk, K. Czolczynski, 'Identification of the gas journal bearings based on the response on the harmonic excitation', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki,Łódź Technical University Press, 1992, 46-51, in Polish.

NC008 - J. Awrejcewicz, K. Marynowski, 'On the stability of the Laval rotor subjected to external torque and follower force', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 52-57, in Polish.

NC009 - J. Awrejcewicz, K. Marynowski, 'The influence of the shaft's mass and support on the stability of the rotor subjected to the follower force', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 58-63, in Polish.

NC010 - J. Awrejcewicz, M. Wozniak, 'Stability of power transmission systems', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 64-69, in Polish.

NC011 - J. Mrozowski, J. Awrejcewicz, 'Flutter and non-linear vibration of a thin rectangular plate subjected to aerodynamic force action', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 114-119, in Polish.

NC012 - W. Wodzicki, J. Awrejcewicz, 'The experimental-numerical method of determining parameters of rotating systems', The First National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J. Wawrzecki, Łódź Technical University Press, 1992, 150-156, in Polish.

NC013 - J. Awrejcewicz, 'Periodic oscillations and chaos in a nonlinear system with time delay', The Second National Conference on 'Dynamical Systems: Theory and Applications', Eds. J. Awrejcewicz and J.Wawrzecki, Łódź Technical University Press, 1994, 39-48, in Polish.

NC014 - S. Bobrzyk, J. Janiszewski, J. Awrejcewicz, 'Middle ear ossicles dynamcs', The Second National Conference on 'Dynamical Systems: Theory and Applications', Ed. J. Awrejcewicz, Łódź Technical University Press, 1994, 49-54, in Polish.

NC015 - J. Awrejcewicz, K. Tomczak, 'Difference esimation of exact and approximate solutions in vibro-impact systems', Proceedings of the First National Conference of MATLAB Users, Eds. R. Tadeusiewicz, T. Uhl; Kraków, November 14-15, 1995, 276-281, in Polish.

NC016 - J. Awrejcewicz, C.-H. Lamarque, 'Peculiar organization of saddle orbits and collision phenomena exhibited by two-dimensional maps', Proceedings of the Third Conference on 'Dynamical Systems: Theory and Applications', Łódź Technical University Press, Łódź, 1995, 55-62.

NC017 - J. Awrejcewicz, K. Tomczak, 'Vibrating systems with impacts - exact and equivalent models', Proceedings of the Third Conference on 'Dynamical Systems: Theory and Applications', Łódź Technical University Press, Łódź, 1995, 63-68.

NC018 - J. Awrejcewicz, M. Holicke, 'Detection of chaotic orbits in the Duffing oscillator with dry friction using the Melnikov's method', Proceedings of the 1st National Conference 'Methods and Computer Systems in Scientific Research and Engineering Design', Eds. T. Szmuc, R. Tadeusiewicz, M. Szymkat, T. Uhl; Kraków, 25-26 November, 1997, 369-374, in Polish.

NC019 - J. Awrejcewicz, T. Antosik, 'Investigation of the human spine stability using implants in its lumbar part by means of finite element method', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 51-58.

NC020 - J. Awrejcewicz, M. Holicke, 'Influence of dry friction on homoclinic chaos', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 59-62.

NC021 - J. Awrejcewicz, A.V. Krysko, V.A. Krysko, 'Period doubling Hopf bifurcation of thin flexible isotropic plates with an impact load', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 63-68.

NC022 - R. Fikus, J. Awrejcewicz, 'Chaos in the R/C time system - MOS inverter. experimental investigations', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 103-108.

NC023 - M. Holicke, J. Awrejcewicz, 'Homoclinic chaos in the system of pendulum with friction', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 121-124.

NC024 - V.A. Krysko, J. Awrejcewicz, 'Dynamics of a shell with the added masses', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 163-168.

NC025 - V.A. Krysko, J. Awrejcewicz, 'Three dimensional problem of the orthotropic plate vibrations with the added masses', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 169-176.

NC026 - M. Marcinkowski, J. Awrejcewicz, 'Investigation of the Poisson ratio for papers', Proceedings of the 4th Conference 'Dynamical Systems-Theory and Applications', Eds. J. Awrejcewicz, J. Grabski, J. Mrozowski, Łódź, December 8-9, 1997, 205-210.

NC027 - J. Awrejcewicz, M. Ciach, 'Finite element model of the structure of the intervertrebral disc in the human lumbar spinal segment', Proceedings of the Workshop Microtechnology and Thermal Problems in Electronics, Zakopane, September 21-27, 1998, 11-17.

NC028 - T. Antosik, J. Awrejcewicz, 'Modelling, static and dynamical analysis of the human lumbar spine with application of implants', Proceedings of the Conference on Biomechanics - Modelling, Computational Methods, Experiments and Biomedical Applications, Eds. J. Awrejcewicz, M. Ciach and M. Kleiber, Lodz, December 7-8, 1998, 7-14, in Polish.

NC029 - J. Awrejcewicz, K. Włodarczyk, 'Biomechanical aspects of ischaemic heart desease using intracoronary stents', Proceedings of the Conference on Biomechanics - Modelling, Computational Methods, Experiments and Biomedical Applications, Eds. J. Awrejcewicz, M. Ciach and M. Kleiber, Lodz, December 7-8, 1998, 15-22, in Polish.

NC030 - M. Ciach, J. Awrejcewicz, 'Finite element analysis and experimental investigation of the intervertebral disc in the human and porcine lumbar spinal segment', Proceedings of the Conference on Biomechanics - Modelling, Computational Methods, Experiments and Biomedical Applications, Eds. J. Awrejcewicz, Ciach and M. Kleiber, Lodz, December 7-8, 1998, 53-64.

NC031 - M. Ciach, A. Maciejczak, J. Awrejcewicz, A. Radek, 'A comparison of two surgical techniques using finite element model of cervical spine before and after discectomy with interbody bone graft', Proceedings of the Conference on Biomechanics - Modelling, Computational Methods, Experiments and Biomedical Applications, Eds. J. Awrejcewicz, M. Ciach and M. Kleiber, Lodz, December 7-8, 1998, 65-74.

NC032 - J. Awrejcewicz, G. Kudra, 'Nonlinear dynamics of a triple physical pendulum', Proceedings of the 2nd National Conference, 'Methods and Computer Systems in Scientific Research and Engineering Design', Eds. R. Tadeusiewicz, S. Białas, T. Szmuc, M. Szymkat; CCATIE, Cracow, October 25-27, 1999, 231-236.

NC033 - J. Awrejcewicz, K. Tomczak, 'Control of simple vibro-impact systems using time delay loop', Proceedings of the 2nd Scientific Conference Impact Resistance of Constructions, Rynia, December 9-11, 1999, 5-16 (invited lecture).

NC034 - J. Awrejcewicz. 'Recent trends in asymptotical techniques with applications to mechanics', 'Vibrations in Physical Systems', XIXth Symposium, Abstracts and Invited Lectures, Poznań-Błażejewko, May 23-27, 2000, 34-46 (invited paper).

NC035 - J. Awrejcewicz, K. Włodarczyk, 'Numerical investigations of mechanical properties of the implants used in isachemic heart deseases', Proceedings of the XVII Polish National Conference on TMM, Eds. A. Morecki, K. Kędzior, C. Rzymkowski, Warszawa-Jachranka, September 6-8, 2000, 461-465, in Polish.

NC036 - W. Wodzicki, J. Awrejcewicz, 'Passive control of the vibration modes of the beam systems', Proceedings of the 70 years birthday and 45 years of the scientific activity of Prof. Dr hab. Józef Giergiel and the 5th School on Modal Analysis, Ed. T. Uhl, Kraków, December 12-14, 2000, 5-14, in Polish.

NC037 - J. Awrejcewicz, P. Olejnik, 'Chaos and hyperchaos in a self-excited system with two-degree-of-freedom and friction', Proceedings of the 70 years birthday and 45 years of the scientific activity of Prof. Dr hab. Józef Giergiel and the 5th School on Modal Analysis, Ed. T. Uhl, Kraków, December 12-14, 2000, 15-24, in Polish.

NC038 - J. Awrejcewicz, G. Kudra, 'A family of coexisting regular and irregular solutions in coupled three pendulums with impacts', Proceedings of the 70 years birthday and 45 years of the scientific activity of Prof. Dr hab. Józef Giergiel and the 5th School on Modal Analysis, Ed. T. Uhl, Kraków, December 12-14, 2000, 25-34, in Polish.

NC039 - J. Awrejcewicz, Yu. Pyr'yev, 'Analysis of chaotic motion of a pad attached to a rotating shaft using analytical and numerical methods', Polish Mechanics in the Threshold of XIX Century, Ed. W. Szcześniak, OW PW, Kazimierz Dolny, Warszawa, October, 2001, 155-160, in Polish.

NC040 - K. Włodarczyk, J. Awrejcewicz, M. Bąkała, 'Experimental and numerical investigation of mechanical properties of the intracoronary stents', Proceedings of the 17th Conference of Biomechanics, Ed. J. Wojnarowicz, OW PW, Wrocław, 2001, 679-684, in Polish.

NC041 - K. Włodarczyk, J. Awrejcewicz, M. Bąkała, 'Intracoronary stents used in ischaemic heart disease - numerical calculations of mechanical properties of new implants', Proceedings of the 17th Conference of Biomechanics, Ed. J. Wojnarowicz, OW PW, Wrocław, 2001, 671-678, in Polish.

NC042 - J. Awrejcewicz, P. Olejnik, 'Calculating Lyapunov exponents from an interpolated time series', Proceedings of XVIII Polish Scientific Conference on the Theory of Machines and Mechanisms, Wrocław - Lądek Zdrój, September 18-20, 2002, 35-40, in Polish.

NC043 - J. Awrejcewicz, Yu. Pyryev, 'Breaking and acceleration processes of bush-shaft system dynamics including heat and tribology phenomena', Proceedings of XVIII Polish scientific Conference on the Theory of Machines and Mechanisms, Wrocław - Lądek Zdrój, September 18-20, 2002, 41-46, in Polish.

NC044 - J. Awrejcewicz, B. Supeł, 'A triple physical pendulum - experimental rig', Proceedings of XVIII Polish scientific Conference on the Theory of Machines and Mechanisms, Wrocław - Lądek Zdrój, September 18-20, 2002, 47-52, in Polish.

NC045 - J. Awrejcewicz, K. Włodarczyk, P. Dura, 'Intravascular implants (stents) used in treatment of ischaemic heart disease - future trends', Proceedings of XVIII Polish scientific Conference on the Theory of Machines and Mechanisms, Wrocław - Lądek Zdrój, September 18-20, 2002, 53-60, in Polish.

NC046 - J. Awrejcewicz, W. Wodzicki, M. Pietrusiewicz, 'Active control of a beam using an added concentrated mass', Proceedings of XVIII Polish scientific Conference on the Theory of Machines and Mechanisms, Wrocław - Lądek Zdrój, September 18-20, 2002, 61-66, in Polish.

NC047 - J. Awrejcewicz, Yu. Pyryev, 'The Saint-Venant principle applied to elastokinetics problems of an impact acting of elastic half space', Proceedings of the 3rd Scientific Conference Impact Resistance of Constructions, Rynia, October 23-25, 2002, 7-14, in Polish.

NC048 - J. Awrejcewicz, Yu. Pyryev, 'Analysis of a chaotic motion of the bush situated on the rotating shaft using analytical and numerical methods', Proceedings of 7th School on Modal Analysis, Ed. T. Uhl, Kraków, December 10-11, 2002, 13-20, in Polish.

NC049 - J. Awrejcewicz, G. Kudra, 'A crank systems as the particular case of a triple physical pendulum with impacts', Proceedings of 7th School on Modal Analysis, Ed. T. Uhl, Kraków, December 10-11, 2002, 5-12, in Polish.

NC050 - J. Awrejcewicz, Yu. Pyryev, 'Determination of deflection of an elastic half-space generated by impact loads', Proceedings of 10th Conference on Vibro-acoustics and Vibro-technics WIBROTECH 2003, Kraków, March 24-25, 2003, CD ROM (6 pages), in Polish (plenary lecture).

NC051 - J. Awrejcewicz, B. Supeł, 'An experimental rig for analysis of strongly non-linear dynamical systems', Proceedings of the XIX Polish National Conference on Theory of Machines and Mechanisms, TMM 2004, Eds. J. Wojnarowski, T. Uhl, Kraków, October 12-14, 2004, vol. II, 259-264, in Polish.

NC052 - J. Awrejcewicz, P. Olejnik, 'Bifurcations of both sliding phase and periodic orbits in a two-dimensional mechanical system', Proceedings of the 11th Scientific Conference on Vibro-acoustics and Vibro-technics, WIBROTECH 2005, Warsaw, November 3-4, 2005, 17-26, in Polish.

NC053 - J. Awrejcewicz, G. Kudra, G. Wasilewski, 'Experimental detection of chaos in a triple pendulum', Proceedings of the 11th Scientific Conference on Vibro-acoustics and Vibro-technics, WIBROTECH 2005, Warsaw, November 3-4, 2005, 27-32, in Polish.

NC054 - J. Awrejcewicz, G. Kudra, G. Wasilewski, 'A triple physcial pendulum - experimental and numerical investigations', Proceedings of the 12th Scientific Conference on Vibro-acoustics and Vibro-technics, VI Polish Seminar on Vibro-acoustics in Mechanical Systems, WIBROTECH 2006, Warsaw, September 28-29, 2006, 88-91, in Polish.

NC055 - J. Awrejcewicz, Yu. Pyryev, 'Analysis of wear influence on dynamic damper with dry friction', Proceedings of the XX Polish National Conference on Theory of Machines and Mechanisms, TMM 2006, Eds. J. Wojnarowski, M. Galicki, Zielona Góra, September 18-19, 2006, vol. I, 59-65, in Polish.

NC056 - J. Awrejcewicz, B. Łuczak, 'Expertimental investigations of the human thorax dynamics', 22nd Symposium on Experimental Mechanics of Solids, Jachranka, October 18-21, 2006, 137-142.

NC057 - J. Awrejcewicz, G. Wasilewski, 'Bifurcations exhibited by a triple pendulum - experimental investigations', 22nd Symposium on Experimental Mechanics of Solids, Jachranka, October 18-21, 2006, 143-148.

NC058 - J. Awrejcewicz, Yu. Pyryev, 'Periodic motion of a body with two-sided constraints and impacts', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC059 - J. Awrejcewicz, P. Olejnik, 'Solutions bifurcation around a variable non-smooth state of a one degree-of-freedom harmonically excited system', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC060 - J. Awrejcewicz, A. Krysko, O. Saltykova, 'Bifurcation and chaotic dynamics of the Euler-Bernoulli beams', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC061 - J. Awrejcewicz, G. Kudra, G. Wasilewski, 'Experimental observations and simulations of a triple physical pendulum', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC062 - R. Starosta, J. Awrejcewicz, 'Analysis of dynamics of autoparametric systems in resonance zones', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC063 - J. Mrozowski, J. Awrejcewicz, 'Stability of a human movement by the methods applied in robotics', Proceedings of the 1st Polish Congress of Mechanics, Warsaw, August 28-31, 2007, 8 pages (CD Rom), in Polish.

NC064 - J. Awrejcewicz, 'Dynamics of physical pendulum system', Proceedings of the Jubilee Conference on 'Contemporary problems of mechanical engineering', Cracow, September 15, 2007, 53-81, in Polish.

NC065 - J. Awrejcewicz, D. Grzelczyk, Yu. Pyryev, 'Influence of the chosen wear models for dynamics of a coupling system', Proceedings of the Polish National Conference on Theory of Machines and Mechanisms, TMM 2008, Eds. J. Wojnarowski, I. Adamiec-Wójcik, Bielsko-Biala, September 18-19, 2008, 179-186, in Polish.

NC066 - L.V. Yakushevich, Gapa S., J. Awrejcewicz, 'Mathematical analysis of equation imitating DNA base oscillations', (Eds.) G.Y. Riznichenko, A.B. Rubina, Proceedings of the XVII National Conference 'Mathematics, Computer, Education', Part 6. 'Analysis of Complex Biological Systems. Models and Experimeent', Dubna, Russia, January 25-30, 2, 2009, 135-144.

NC067 - J. Awrejcewicz, J. Mrozowski, A. Dąbrowska-Wosiak, 'Orbital bone stress analysis by tensometric and finite element methods', Proceedings of the XVII National Conference 'Biocybernetics and Biomedical Engineering', Gliwice/Tarnowskie Góry, October 11-14, 2011, 5 pages (CD Rom) in Polish.

NC068 - J. Awrejcewicz, T. Andrysiak, 'Thermographic analysis of muscle usage during Brazilian Jiu-Jitsu training', Proceedings of the XVII National Conference 'Biocybernetics and Biomedical Engineering', Gliwice/Tarnowskie Góry, October 11-14, 2011, 4 pages (CD Rom) in Polish.