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Николай Колев Витанов

Заемана длъжност: старши научен сътрудник I степен

Лаборатория: Физико-химична хидродинамика

Стая №: 116

Тел.: (02) 979 6416

E-mail: vitanov@imbm.bas.bg

 

Научни степени, организация, година:

Доктор по физика, 1994, Софийски университет „Св. Климент Охридски”

Доктор на естествените науки, 1998, Университет Байройт, Германия

Доктор на математическите науки, Институт по Механика на Българската академия на науките, 2007

Области на професионален интерес (ключови думи):

Теория на турбулентността

Нелинейна динамика

Нелинеен анализ на времеви редове

Социална динамика

Икономическа физика


Допълнителна инфомация

 

Избрани публикации:

1.) On the way to success: The Institute of Mechanics of BAS was awarded as the most innovative
research organization in Bulgaria for  2009.
by  Nikolay K. Vitanov 
Journal of the Bulgarian Academy of Sciences,  78,  No. 2, 83 - 85 (2010).

 

2.) Modified method of simplest equation and its application to nonlinear PDEs.
by Nikolay K. Vitanov, Zlatinka I. Dimitrova and Holger Kantz
Applied Mathematics and Computation, 216, 2587 - 2595 (2010).

 

3.) Application of the method of simplest equation for obtaining exact traveling-wave solutions for
two classes of model PDEs from ecology and population dynamics.
by Nikolay K. Vitanov and Zlatinka I. Dimitrova
Communications in Nonlinear Science and Numerical Simulation, 15, 2836 - 2845 (2010).

 

4.) Science in the service of the government politics: What the time series analysis tells us about
the present and future economic situation of the Bulgarian scientists.
by Nikolay K. Vitanov and Kim Gol
Journal of the Bulgarian Academy of Sciences, 78, No. 1, 68 - 70 (2010).

 

5.) Application of simplest equations of Bernoulli and Riccati kind for obtaining exact traveling-wave solutions
for a class of PDEs with polynomial nonlinearity.
by Nikolay K. Vitanov
Communications in Nonlinear Science and Numerical Simulation, 15, 2050 - 2060 (2010).

 

6.) Optimum fields and bounds on heat transport for nonlinear convection in rapidly rotating fluid layer
by Nikolay K. Vitanov
 European Physical Journal B, 73, 265 - 273 (2010).

 

7.) Bounds for heat transport for convection in rotating fluid layer.
by Nikolay K. Vitanov
Journal of Theoretical and Applied Mechanics, 39, No. 4, 11 - 20 (2009).
8.) On nonlinear dynamics of interacting populations: Coupled kink waves in a system of two populations
by Nikolay K. Vitanov, Ivan P. Jordanov, Zlatinka I. Dimitrova

Communications in Nonlinear Science and Numerical Simulation, 14,  2379-2388 (2009).

9.) Bounds on heat transport for thermal convection in rapidly rotating fluid layer.
by Nikolay K. Vitanov

Compt. rend. Acad. bulg. Sci., 62, Nr. 6, 709 - 716 (2009).

10.) The elite and its educaton
by Nikolay K. Vitanov

Science (Sofia), 19, Nr. 2, 73 - 75 (2009).

11.) Spatiotemporal Symmetry and Multifractal Structure of Head Movements during Dyadic Conversation.
by Kathleen T. Ashenfelter, Steven Boker, Jennifer R. Waddell, Nikolay K. Vitanov

Journal of Experimental Psychology: Human Perception and Performance, 35, 1072 - 1091 (2009).

12.) Optimum theory of turbulence: ideas, methods and results
by Nikolay K. Vitanov

Journal of Theoretical and Applied Mechanics, 39 Nr. 3, 31 - 62 (2009).

13.) Career development and mobility of the scientists - current state, needs and necessary conditions
by Nikolay K. Vitanov
p.p. 156 - 167 in Speeches of the national Forum for the Science, Sofia, 27 - 29.04. 2009,

Union of Scientists in Bulgaria, Sofia (2009).

 14) On nonlinear population waves
by Nikolay K. Vitanov, Ivan P. Jordanov, Zlatinka I. Dimitrova 

Applied Mathematics and Computation, 215, 2950 - 2964 (2009).

15.) On probability for rogue waves in the North Sea.

by Nikolay  Vitanov and  Norbert Hoffmann ,  Compt. rend. Acad. bulg. Sci.  62, Nr. 2, 185-191 (2009).

16.) Differentiation and integration of the scientific knowledge on the border between natural and social sciences: new scientific branches. 

by Nikolay K. Vitanov  Science (Sofia), 18, Nr. 3, 33-36 (2008).

17.) Mathematical models of intergroup conflicts.

by S. Panchev and Nikolay K. Vitanov  Compt. rend. Acad. bulg. Sci. 61 Nr. 8, 993-1002 (2008). 

18.) Generalization of the model of conflict between two armed groups.
by Nikolay K. Vitanov and S. Panchev. Compt. rend. Acad. bulg. Sci. 61,  N r.9, 1121-1126 (2008).

19.) Social dynamics without formulas - 360 pages

by N. K. Vitanov, Z. I. Dimitrova, S. Panchev. Prof. Mardin Drinov Academic Publishing House of the Bulgarian Academy of Sciences, Sofia (2008)

20.) SSA, PCA, TDPSC, ACFA: Useful combination of methods for analysis of short and nonstationary time series

by Nikolay K. Vitanov, K. Sakai and Z. I. Dimitrova Chaos Solitons & Fractals 38, 187-202 (2008)

21.) Short time prediction of wind speeds from local measurements

by H. Kantz, D. Holstein, M. Ragwitz and N. K. Vitanov Chapter 16 (p.p. 93-98) in J. Peinke, P. Schaumann, S. Barth (eds) Wind Energy, Springer, Berlin (2007)

22.) On the Bulgarian scientific system
by N. K. Vitanov, Z. Dimitrova and S. Panchev Science (Sofia) 17, Nr. 6, 64-69 (2007)

23.) Shall we survive?

by N. K. Vitanov Science (Sofia) 17, Nr. 5, 3-7 (2007)

24.) Analysis of a Japan government intervention on the domestic agriculture market

by N. K. Vitanov, K. Sakai, I. P. Jordanov, S. Managi, K. Demura Physica A 382, 330-335 (2007) .

25.) Physics and social dynamics

by N. K. Vitanov Physics (Sofia) 32, 71-76 (2007)

26.) The Matrix

by N. K. Vitanov Science (Sofia) 17, 34-37 (2007)

27.) Analytical and numerical investigation of two Lorenz-like dynamical systems

by S. Panchev, T. Spassova and Nikolay K. Vitanov Chaos Solitons & Fractals 33, 1658-1671 (2007)

28.) Transition of chaotic motion to limit cycle by intervention of economic policy: An empirical analysis

by K. Sakai, S. Managi, Nikolay K. Vitanov and K. Demura Nonlinear Dynamics, Psychology and Life Sciences 11, 253-265 (2007).

29.) On the trap of extinction and its elimination

by Nikolay K. Vitanov, Zlatinka I. Dimitrova and H. Kantz Phys. Lett. A 346, 350-355 (2006)

30.) Multifractal analysis of the long-range correlations in the cardiac dynamics of Drosophila melanogaster

by Nikolay K. Vitanov and Elka D. Yankulova Chaos, Solitons & Fractals 28, 768-775 (2006)

31.) How Bulgarian Scientists cope with the EU research systems- problems and opportunities

by Nikolay K. Vitanov Science (Sofia) 16, N1, p.p. 18-23 (2006)

32.) The Empire of knowledge I: The scientific politics of Japan

by Nikolay K. Vitanov Science (Sofia) 16, N 3, 12-21 (2006)

33.) The Empire of knowledge II: Reforms in the system of science and technology in Japan

by Nikolay K. Vitanov Science (Sofia) 16, N4, 14-24 (2006)

34.) Hoelder-exponent-MFDFA-based test for long-range correlations in pseudorandom sequences

by Nikolay K. Vitanov, Khristo Tarnev and Holger Kantz Journal of Theoretical and Applied  Mechanics 36, N 2, 47-64 (2006)

35.) Application of physics methods to social phenomena

by Nikolay K. Vitanov, Z. I. Dimitrova, I. P. Jordanov p.p. 123 - 128 in Advances of physics and astrophysics of the 21 st century. edited by I. Zhelyazkov, Heron Press, Sofia (2006)

36.) Upper bound on the heat transport in a heated from below fluid layer
by Nikolay K. Vitanov p.p. 37 - 40 in J. Peinke, A. Kittel, S. Barth, M. Oberlack (eds.) Progress in Turbulence (Springer, Berlin) (2005).

37.) Predicting probability for stochastic processes with local Markov property
by Holger Kantz, Detlef Holstein, Mario Ragwitz and Nikolay K. Vitanov p.p. 95-98 in J. Peinke, A. Kittel, S. Barth, M. Oberlack (eds.) Progress in Turbulence (Springer, Berlin), (2005).

38.) Shilnikov chaos in a generalized system for modeling dynamics of competing populations

by Zlatinka I. Dimitrova and Nikolay K. Vitanov Proceedings of the Bulgarian Academy of Sciences 58, N 3, 257-264 (2005).

39.) Investigation of Alexander's law in the human caloric nystagmus: First results

by Stefan Hegemann, Anja Kusterer, Nikolay K. Vitanov, Veneta Todorova Proceedings of the Bulgarian Academy of Sciences 58, N 4, 457-462 (2005)

40.) Challenges to contemporary physics: Econophysics and sociophysics

by Nikolay K. Vitanov, Zlatinka I. Dimitrova, Stoicho Panchev Science (Sofia) 15, N2, 13-23 (2005).

41.) Population dynamics and national security - 151 pages

by Nikolay K. Vitanov, Zlatinka I. Dimitrova and Stoicho Panchev. Prof. Marin Drinov Publishing House of the Bulgarian Academy of Sciences, Sofia (2005)

42.) On correlations and fractal characteristics of time series
by Nikolay K. Vitanov, Kenshi Sakai, Elka D. Yankulova Journal of Theoretical and Applied Mechanics 35, N2, 73-90 (2005).

43.) Numerical upper bounds on convective heat transport in a layer of fluid of finite Prandtl number. Confirmation of Howard's analytical single-wavenumber bound

by Nikolay K. Vitanov Physics of Fluids 17, Article Number 105106 (2005)

44.) Asymptotic properties of some complex Lorenz systems

by S. Panchev and Nikolay K. Vitanov Journal of Calcutta Mathematical Society 1 181-190 (2005)

45.) Upper bounds on the turbulent convective heat transport in a rotating fluid layer

by Nikolay K. Vitanov and Friedrich F. Busse in Ivanov Ya. , Manoach E., Kazandjiev R.(eds.)  Proceedings of the X-th jubilee congress on theoretical and applied mechanics,Varna, Bulgaria, 13-16.09.2005, Vol. 1, p.p. 618-623 (2005)

46.) On the Alexander's law in the human caloric nystagmus

by Nikolay K. Vitanov, Veneta Todorova, Stefan Hegamann and Anja Kusterer in Ivanov Ya., Manoach E., Kazandjiev R. (eds.) Proceedings of the X-th jubilee congress on theoretical and applied mechanics, Varna, Bulgaria, 13-16.09.2005, Vol. 2, p.p. 207 - 212 (2005)

47.) On the nonlinear dynamics of agent systems: Case of competing populations

by Zlatinka I. Dimitrova, Nikolay K. Vitanov and Ivan P. Jordanov in Ivanov Ya. , Manoach E., Kazandjiev R. (eds.) Proceedings of the X-th jubilee congress on theoretical and applied mechanics, Varna, Bulgaria, 13-16.09.2005, Vol. 1, p.p. 41-46 (2005)

48.) Extreme events in surface wind: Predicting turbulent gusts

by H. Kantz, D. Holstein, M. Ragwitz and Nikolay K. Vitanov p.p. 315-324 in Experimental chaos, eds. S. Boccaletti, B. J. Gluckman, J. Kurths, L. M. Pecora, R. Meucci, O. Yordanov. American Institute of Physics, Conference Proceedings 742, Meliville, New York (2004).

49.) Chaotic pairwise competition

by Z. I. Dimitrova and Nikolay K. Vitanov Theoretical Population Biology 66, 1-12 (2004).

50.) Markov chain model for turbulent wind speed data

by H. Kantz, D. Holstein, M. Ragwitz and Nikolay K. Vitanov Physica A 342,. 315-321 (2004).

51.) Convective heat transport in a rotating fluid layer of infinite Prandtl number: optimum fields and upper bounds on Nusselt number

by Nikolay K. Vitanov Phys. Rev. E 67, Article Number 026322 (2003)

52.) Upper bounds on the numbers of significant degrees of freedom of noise influenced oscillations of moving machines

by Nikolay K. Vitanov and K. Sakai Systems Analysis Modelling Simulation (SAMS) 43, 815-828 (2003)

53.) On the optimum fields in rotating systems with heat convection

by Nikolay K. Vitanov Proceedings of the Bulgarian Academy of Science 56 , N2, 31-36 (2003)

54.) On some properties of the point correlation dimension

by Nikolay K. Vitanov and E. Yankulova Proceedings of the Bulgarian Academy of Sciences 56, N2, 25-30 (2003)

55.) Dynamical properties of nystagmus

by Nikolay K. Vitanov and V. Todorova Proceedings of the Bulgarian Academy of Sciences 56, N 1, 25-30 (2003)

56.) Population dynamics and its unexpected applications

by Zlatinka I. Dimitrova and Nikolay K. Vitanov Science (Sofia), 12, N5, 27-31 (2002)

57.) The power of science

by Nikolay K. Vitanov Science (Sofia) 12, N4, 22-26 (2002).

58.) Topological analysis of the chaotic behavior of Shinriki oscillator

by Nikolay K. Vitanov, M. Siefert and J. Peinke Proceedings of the Bulgarian Academy of Sciences 55, N 9, p.p. 31-36 (2002).

59.) Low-dimensional chaos in zero-Prandtl-number Benard-Marangoni convection

by T. Boeck and Nikolay K. Vitanov Phys. Rev. E 65, Article Number 037203 (2002).

60.) Dynamical analysis of a noise influenced Shinriki oscillator

by Nikolay K. Vitanov, M. Siefert, J. Peinke Proceedings of the Bulgarian Academy of Sciences 55, N 7, 15-20 (2002)

61.) Upper bounds on the convective heat transport in a rotating fluid of infinite Prandtl number: Case of large Taylor numbers

by Nikolay K. Vitanov European Phys. Journ. B 23, 249-266 (2001)

62). Adaptation and its impact on the dynamics of a system of three competing populations

by Z. I. Dimitrova and Nikolay K. Vitanov Physica A 300, 91-115 (2001)

63.) Dynamical consequences of adaptation of the growth rates in a system of three competing populations

by Z. I. Dimitrova and Nikolay K. Vitanov J. Phys A: Math. Gen 34, 7459-7473 (2001)

64.) Bounds on the convective heat transport in a rotating layer

by Nikolay K. Vitanov and F.H. Busse Phys. Rev. E 63 , 016303 (2001)

65.) Upper bounds on the convective heat transport in a rotating fluid of infinite Prandtl number: case of intermediate Taylor numbers

by Nikolay K. Vitanov Phys. Rev. E 62, 3581-3591 (2000)

66.) Influence of adaptation on the nonlinear dynamics of a system of competing populations

by Z. I. Dimitrova and Nikolay K. Vitanov Phys. Lett A 272, 368-380 (2000)

67.) Upper bound on the heat transport in a layer of fluid of infinite Prandtl number, rigid lower boundary, and stress-free upper boundary

by Nikolay K. Vitanov Phys. Rev. E 61, 956-959 (2000)

68.) Bounds on the turbulent heat transport in a porous medium

by Nikolay K. Vitanov Physica D 136, 322-339 (2000)

69.) Convective heat transport in a fluid layer of infinite Prandtl number: upper bounds for the case of rigid lower boundary and stress-free upper boundary.

by Nikolay K. Vitanov European Phys. Journal B 15, 349-355 (2000)

70.) Bounds on energy dissipation in turbulent shear flow under the action of rotation

by N.P. Hoffmann and Nikolay K. Vitanov Physics Letters A 255, 277-286 (1999)

71.) Breather and soliton wave families for the sine-Gordon equation

by Nikolay K. Vitanov Proc. Roy. Soc. London A 454, 2409-2423 (1998)

72.) Bounds for turbulent convection

by Nikolay K. Vitanov and F.H. Busse Journal of Applied Mathematics and Mechanics (ZAMM) 78, S787-S788 (1998)

73.) Complicated exact solutions to the 2+1-dimensional sine-Gordon equation

by Nikolay K. Vitanov Journal of Applied Mathematics and Mechanics (ZAMM) 78, S789-S790 (1998)

74.) Upper bound on the heat transport in a horizontal fluid layer of infinite Prandtl number

by Nikolay K. Vitanov Physics Letters A 248, 338-346 (1998)

75.) Upper bounds on heat transport in a horizontal fluid layer with stress-free boundaries

by Nikolay K.Vitanov and F.H. Busse Journal of Applied Mathematical Physics (ZAMP) 48, 310-324 (1997)

76.) On the solitary waves in the sine-Gordon model of the two-dimensional Josephson junction

by Nikolay K. Vitanov and N.K. Martinov Zeitschrift fuer Physik B: Cond. Matt. 100, 129-135 (1996)

77.) On traveling waves and double-periodic structures in two-dimensional sine-Gordon systems

by Nikolay K. Vitanov J. Phys. A: Math. Gen. 29 , 5195-5207 (1996)

78.) New class of running-wave solutions of the 2+1-dimensional sine-Gordon equation

by N. Martinov and Nikolay K. Vitanov J. Phys. A: Math. Gen. 27 , 4611-4618 (1994)

79.) On the self-consistent thermal equilibrium structures in two-dimensional negative-temperature systems

by N. Martinov and Nikolay K. Vitanov Canadian Journal of Physics 72, 618 -624 (1994)

80.) Analysis of the standing-wave solutions of the one-dimensional sine-Gordon equation

by N. Martinov and Nikolay K. Vitanov Bulgarian Journal of Physics 19, 48-56 (1992)

81.) Running-wave solutions of the two-dimensional sine-Gordon equation

by N.Martinov and Nikolay K. Vitanov J. Phys. A: Math. Gen. 25, 3609-3613 (1992)

82.) On some solutions of the two-dimensional sine-Gordon equation

by N. Martinov and Nikolay K. Vitanov J. Phys. A: Math. Gen. 25, L419 - L426 (1992)

83.) On the correspondence between the self-consistent 2D Poisson-Boltzmann structures and the sine-Gordon waves

by N.Martinov and Nikolay K. Vitanov J. Phys. A: Math. Gen. 25, L51-L56 (1992)

 

Проекти:

MM1201/02 (NSF of Republic of Bulgaria): Extraction of information from time series, 2002-2005 – Head of the Project

NATO CLG Improving Upper Bounds of Transports by Turbulent Flows, 2002-2006, Leading partner from Bulgaria

COST P10 Physics of Risk (European Science Foundation): Member of the Managing Committee from Bulgaria, 2004-2008

COST MP0801 Physics of Competition and Conflict (European Science Foundation): Member of the Managing Committee from Bulgaria, 2008-2012

COST MP0806 Turbulence and Particles (European Science Foundation): Member of the Managing Committee

from Bulgaria, 2008-2012

DO 02/338 Variational methors in fluid mechanics (NSF of Republic of Bulgraia) 2008-2011, participant

Членство в научни организации:

  1. Съюз на учените в България

  2. Съюз на математиците в България

  3. Съюз на българските физици

  4. Хумболтов съюз

Награди:

  1. Първа награда на Фонд научни изследвания на Република България за постигнати съществени резултати в работата по проекта ММ1201/02 -2005 г.

  2. Първа награда на Съюза на учените в България за високи научни постижения в областта на естествените науки - 2008г.

  3. Многобройни стипендии между които стипендии на ДААД, Фондацията Александър фон Хумболдт и Японското общество за развитие на науката

 

 


Последна промяна:18-06-2010