-
- 1
- R. Friedrich and H. Haken: Stationary, Wavelike, and
Chaotic Thermal Convection in Spherical Geometries,
Phys. Rev. A 34, 2100-2120 (1986)
- 2
- R. Friedrich, H. Haken: Exact Stationary Probability Distribution
for a Simple Model of a Nonequilibrium Phase Transition,
Z. Phys. B -Condensed Matter (1988)
- 3
- M. Bestehorn, R. Friedrich, H. Haken: The Oscillatory Instability
of a Spatially Homogeneous State in Large Aspect Ratio Systems
of Fluid Dynamics,
Z. Phys. B - Condensed Matter 72, 265-275 (1988)
- 4
- M. Bestehorn, R. Friedrich, H. Haken:
Traveling Wave Patterns in Nonequilibrium Systems,
Physica D 37, 295 (1989)
- 5
- M. Bestehorn, R. Friedrich, H. Haken: Two-dimensional
Traveling Wave Patterns in Nonequilibrium Systems,
Z. Phys. B - Condensed Matter 75, 265-274 (1989)
- 6
- M. Bestehorn, R. Friedrich, H. Haken: Modulated
Traveling Waves in Nonequilibrium Systems: The Blinking State,
Z. Phys. B 77, 151-155 (1989)
- 7
- R. Friedrich: Fluctuating Dynamo Models,
Physics Letters A 137, 471-474 (1989)
- 8
- R. Friedrich, M. Bestehorn, H. Haken: Pattern Formation
in Convective Instabilities, Übersichtsartikel für die
Zeitschrift ``International Journal of Modern Physics B``,
IJMPB Vol. 4, No. 3, 365-400 (1990)
- 9
- R. Friedrich, H. Haken: Nonequilibrium Phase
Transition in a System
with Chaotic Dynamics: The ABCDE Model. Physics Letters A 164,
299-304 (1992)
- 10
- R. Friedrich, M. Fantz, M. Bestehorn, H. Haken, Pattern
Formation in Rotating Bénard Convection, Physica D 61,
147-154 (1992)
- 11
- M. Bestehorn, M. Fantz, R. Friedrich, H. Haken, C. Perez-Garcia:
Spiral Patterns in thermal convection, Z. Phys. B 88,
93 (1992)
- 12
- J. M. Rodriguez, C.Pérez-Garcia, M. Bestehorn, M. Fantz,
R. Friedrich,
Pattern formation in convection of rotating fluids with broken
vertical symmetry, Phys. Rev. A 46, 4729-4735 (1992)
- 13
- M. Fantz, M. Bestehorn, R. Friedrich, and H. Haken: Hexagonal
and Spiral Patterns of Thermal Convection,
Physics Letters A 174, 48-52 (1993)
- 14
- R. Friedrich, Higher Instabilities in Synergetic Systems with
Continuous Symmetries, Z. Phys. B 90, 273 (1993)
- 15
- R. Friedrich, Phase diffusion equation for isotropic systems
lacking reflectional symmetry, Z. Phys. B 92, 129-131 (1993)
- 16
- M. Neufeld, R. Friedrich, H. Haken, Order parameter equation
and model equation for high Prandtl number convection in rotating systems,
Z. Phys. B 92, 243-256 (1993)
- 17
- C. Uhl, R. Friedrich, H. Haken: Reconstruction of spatio-temporal
signals of complex systems, Z. Phys. B 92, 211-220 (1993)
- 18
- V.K. Jirsa, R. Friedrich, H. Haken, J.A.S. Kelso:
A theoretical model of phase transitions in the human brain,
Biol. Cybern. 71, 27-35 (1994)
- 19
- M. Bestehorn, M. Neufeld, R. Friedrich, H. Haken:
Comment on spiral-pattern formation in
Rayleigh-Bénard convection,
Phys. Rev E 50, 625-626 (1994)
- 20
- J. Millán-Rodriguez, M. Bestehorn,
C. Pérez-Garcia, R. Friedrich,
M. Neufeld: Motion of defects in rotating fluids,
Chaos 4, 369-376 (1994)
- 21
-
M. Neufeld, R. Friedrich: Pattern formation in rotating
Bénard convection, Int. Journ. Bif. Chaos 4, 1155-1163
(1994)
- 22
-
M. Neufeld, R. Friedrich: Model equations for quasi-twodimensional
pattern forming systems, Ann. Phys. Fr. 19, 721-733 (1994)
- 23
- J. Millán-Rodriguez, M. Bestehorn,
C. Pérez-Garcia, R. Friedrich,
M. Neufeld: Defect motion in rotating fluids,
Phys. Rev. Lett. 74, 530-533 (1995)
- 24
- M. Neufeld, R. Friedrich, Statistical properties of the heat transport
in a model of rotating Bénard convection,
Phys. Rev E 51, 2033-2045, (1995)
- 25
- J. Beyer, R. Friedrich:
Faraday instability: Linear analysis for
viscous fluids, Phys. Rev E 51, 1162-1168 (1995)
- 26
- C. Uhl, R. Friedrich, H. Haken:
Analysis of spatiotemporal signals
of complex systems, Phys. Rev E 51, 3890-3900 (1995)
- 27
- V.K. Jirsa, R. Friedrich, H. Haken: Reconstruction of the
spatio-temporal dynamics of a human magnetoencephalogram,
Physica D 89, 100-122 (1995)
- 28
- R. Friedrich, C. Uhl: Spatio-temporal analysis of human
electroencephalograms: Petit-Mal epilepsy,
Physica D 98, 171-182 (1996)
- 29
-
J. Peinke, R. Friedrich, F. Chilla, B. Chabaud, A. Naert:
Statistical dependency of eddies of different sizes
in turbulence, Z. Phys. B 101, 157-159 (1996)
- 30
- C. Uhl, R. Friedrich:
Spatio-temporal signal analysis with applications
to EEG-analysis, NeuroImage, 3, Suppl., 260 (1996)
- 31
- R. Friedrich, J. Peinke: Statistical properties of the
turbulent cascade,
Physica D 102,147-155 (1997)
- 32
- R. Friedrich, J. Peinke: Description of the turbulent
cascade by a Fokker-Planck equation,
Phys. Rev. Lett. 78, 863 (1997)
- 33
- A. Naert, R. Friedrich, J. Peinke:
Fokker-Planck equation for the energy cascade in turbulence ,
Phys. Rev. E 56, 6719 (1997)
- 34
- J. Peinke, A. Naert, R. Friedrich:
A new approach to characterize disordered structures,
Z. Naturforsch. 52 a, 588 (1997)
- 35
- R. Friedrich, J. Zeller, J. Peinke: A note on the three-point statististics of velocity increments
in turbulence,
Europhys. Lett. 41, 153-158 (1998)
- 36
- S. Siegert, R. Friedrich, J. Peinke: Analysis of
data sets of stochastic systems, Physics Letters A 234,
275-280 (1998)
- 37
- M. Bestehorn, R. Friedrich: Rotationally invariant
order parameter equations for natural patterns in nonequilibrium
systems, Phys. Rev. E 59, 2642 (1999)
- 38
- A. Hutt, C. Uhl, R. Friedrich: Analysis of spatiotemporal
signals: A method based on perturbation theory,
Phys. Rev. E 60, 1350 (1999)
- 39
- S. Lück, J. Peinke, R. Friedrich: Uniform
statistical description of the transition between near and far field
turbulence in a wake flow, Phys. Rev. Lett. 83, 5495 (1999)
- 40
- A. Hutt, M. Svensen, F. Kruggel,
R. Friedrich: Detection of fixed points in spatiotemporal
signals by a clustering method, Phys. Rev. E 61, R4691
(2000)
- 41
- R. Friedrich, J. Peinke, Ch. Renner: How to
quantify deterministic and random influences on the statistics of
the foreign exchange market, Phys. Rev. Lett 84, 5224 (2000)
- 42
- R. Friedrich, S. Siegert, J. Peinke, St. Lück,
M. Siefert, M. Lindemann, J. Raethjen, G. Deuschl, G. Pfister:
Extracting model equations from experimental data,
Physics Letters
A 271, 217 (2000)
- 43
- J. Gradisek, S. Siegert, R. Friedrich, I. Grabec:
Analysis of time series from stochastic processes,
Phys. Rev. E 62, 3146 (2000)
- 44
- R. Friedrich, G. Radons, T. Ditzinger, A. Henning:
Ripple formation through a convective instability from moving growth and
erosion sources, Phys. Rev. Lett. 85, 4884 (2000)
- 45
- Ch. Renner, J. Peinke, R. Friedrich, Experimental indications for Markov properties of small scale
turbulence, J. Fluid Mech. 433, 383 (2001)
- 46
- S. Siegert, R. Friedrich, Modeling nonlinear
Lévy processes by data analysis, Phys. Rev. E 64, (2001)
- 47
- J. Gradisek, S. Siegert, R. Friedrich, I. Grabec,
Stochastic dynamics of metal cutting: Bifurcation phenomena in
turning, to appear in Mechanical Systems and Signal Processing (2002)
- 48
- J. Gradisek, S. Siegert, R. Friedrich, I. Grabec,
qualitative and quantitative analysis of stochastic processes
based on measured data-I. Theory and applications to synthetic data
to appear in Journal of Sound and Vibration (2002)
Tagungsbeiträge
- 1
- R. Friedrich und H. Haken: Convection in Spherical
Geometries, in ``Complex Systems-Operational Approaches``,
Proceedings of the International Symposium on Synergetics,
Schloss Elmau 1985, herausgegeben von H. Haken
- 2
- R. Friedrich and H. Haken: Time Dependent and Chaotic
Behaviour in Systems with O(3)-Symmetry, in
Proceedings of the International Symposium on ``The Physics
of Structure Formation: Theory and Simulation``, Tübingen 1986,
herausgegeben von W. Güttinger und D. Danglmayr
- 3
- A. Fuchs, R. Friedrich, H. Haken, D. Lehmann: The
Spatio-Temporal Analysis of Multichannel Alpha EEG Map Series, in
``Computational Systems- Natural and Artificial``,
Proceedings of the International Symposium on Synergetics,
Schloss Elmau 1987, herausgegeben von H. Haken
- 4
- R. Friedrich: The Selforganization of Large Scale Magnetic Fields
in Turbulent Fluids: A Nonlinear Dynamo Theory,
Proceedings of the Symposium on Synergetics, Order, and Chaos
Madrid, October 13-17, herausgegeben von M. Velarde ( World Scientific, 1988)
- 5
- M. Bestehorn, R. Friedrich, H. Haken:
Modulated Traveling Waves in Nonequilibrium Systems,
in Proceedings on ``Nonlinear Evolution of Spatio-Temporal
Structures in Dissipative Continous Systems``,
herausgegeben von F.H. Busse, L. Kramer (Plenum Press, New York, 1990)
- 6
- M. Bestehorn, R. Friedrich, A. Fuchs, H. Haken,
A. Kuhn, A. Wunderlin:
Synergetics Applied to Pattern Formation and Pattern Recognition,
Proceedings des Winterseminars des Instituts für Angewandte und
Physikalische Chemie der Universität Bremen, 27.2.-6.3. 1988
herausgegeben von P. Plath, Springer Series in Synergetics
- 7
- R. Friedrich, H. Haken; A Short Course on Synergetics,
in ``Nonlinear Phenomena in Complex Systems``, herausgegeben von
A. N. Proto, Proceedings of the ``First International Workshop on
Non-Linear Phenomena in Complex Systems``, Mar del Plata,
Argentinia, November 1-18, 1988 (Elsevier 1989)
- 8
- R. Friedrich, A. Fuchs, and H. Haken: Synergetic Analysis
of Spatio-Temporal EEG Patterns, Proceedings of the
workshop ``Nonlinear Phenomena in Excitable Media``,
Leeds (1989)
- 9
- R. Friedrich, A. Fuchs, and H. Haken:
Spatio-Temporal EEG Patterns,
Proceedings of the International Symposium on Synergetics,
Schloss Elmau 1990, herausgegeben von H. Haken
- 10
- R. Friedrich, A. Fuchs, and H. Haken: Modelling of
Spatio-Temporal EEG Patterns, Proceedings of the
workshop ``Mathematical Approaches to Brain Functioning
Diagnostics``, herausgegeben von I. Dvorák und A. V. Holden
(Manchester University Press 1991)
- 11
- M. Fantz, R. Friedrich, M. Bestehorn, H. Haken: Pattern Formation
in Rotating Bénard Convection, in: From Phase Transitions to
Chaos,
ed. G. Györgyi, I. Kondor, L. Sasvari, T. Tel
(World Scientific 1992)
- 12
- R. Friedrich, M. Fantz, H. Haken: Evolution of Patterns in
Rotating Bénard Convection, Proceedings of the 1992
International Symposium on Spatio-Temporal Structure and Chaos
in Heat and Mass Transfer Processes, herausgegeben von L. Pismen
- 13
- C. Uhl, R. Friedrich: Synergetic Analysis of Human
Electroencephalograms: Petit-Mal Epilepsy,
in ``Evolution of Dynamical Structures in Complex Systems``,
Proceedings of the International Symposium Stuttgart, 16.-17. 7.
1992, Stuttgart, herausgegeben von R. Friedrich, A. Wunderlin
(Springer Proceedings in Physics 69, 1992)
- 14
- R. Friedrich, H. Haken, W. Weimer: Stationarity and
Nonstationarity,
Beitrag zum Buch The Upper Atmosphere,
herausgegeben von Prof. Dr. Dieminger
(Springer-Verlag 1996)
- 15
- R. Friedrich, V.K. Jirsa, H. Haken, C. Uhl: Analyzing Spatio-Temporal Patterns of Complex Systems,
Tagungsbeitrag zur Tagung (1996), herausgegeben von J.Kurths,
H. Kantz und G. Mayer-Kress, (Springer-Verlag 1998)
- 16
- R. Friedrich, J. Peinke, Conditional Probability Distributions
of a Turbulent Cascade, Beitrag zu Nonlinear Physics of Complex Systems, herausgegeben von
J. Parisi, S.C. Müller, W. Zimmermann, Lecture Notes in Physics,
Springer-Verlag 1997
- 17
- M. Bestehorn, R. Friedrich,
Natural patterns in nonequilibrium systems,
Beitrag zu A Perspective Look at Nonlinear Systems,
herausgegeben von
J. Parisi, S.C. Müller, W. Zimmermann,
Lecture Notes in Physics,
Springer-Verlag 1998
- 18
- R. Friedrich, Th. Galla, A. Naert, J. Peinke,
Th. Schimmel
Disordered structures analyzed by the
theory of Markov
processes, Beitrag zu A Perspective Look at Nonlinear Systems,
herausgegeben von
J. Parisi, S.C. Müller, W. Zimmermann,
Lecture Notes in Physics,
Springer-Verlag 1998
- 19
- C. Uhl, R. Friedrich,
Spatio-temporal modeling based on
dynamical systems theory, Buchbeitrag
zu Analysis of Neurophysiological Brain
Functioning, herausgegeben von C. Uhl
(Springer-Verlag 1999)
- 20
- H.W. Müller, R. Friedrich, D. Papathanassiou:
Theoretical and experimental investigations of the
Faraday instability, Buchbeitrag
zu Evolution of Spontaneous Structures in Dissipative
Continous Systems
, herausgegeben von F.H. Busse und S. Müller,
(Springer-Verlag 1998)
- 21
- R. Friedrich, S. Siegert, A method
for analyzing data sets of stochastic systems,
Proceedings der Tagung Investigation of nonlinear
dynamic effects in production systems,
WLZ, Aachen 1999
- 22
- Westkämper, A. Henning,
G. Radons, R. Friedrich, T. Ditzinger, Nonlinear dynamic modelling of the abrasive waterjet
process
Proceedings der Tagung
Investigation of nonlinear
dynamic effects in production systems,
WLZ, Aachen 1999
- 23
- T. Ditzinger, R. Friedrich, A. Henning, G. Radons,
Non-linear dynamics in modeling of cutting edge geometry,
American Waterjet Conference, August 14-17, 1999,
Houston, Texas
- 24
- R. Friedrich, Dynamics of EEG signals during petit-mal
epileptic seizures, Proceedings der Konferenz
Chaos in brain, herausgegeben von Grassberger, Lehnertz, Elger
(World Scientific)
- 25
- J. Gradisek, S. Siegert, R. Friedrich, I. Grabec,
On bifurcation phenomena in metal cutting, Proceedings der
Konferenz Stochastic and Chaotic Dynamics, Ambleside,
16. -20. 8. 1999, herausgegeben von D. Broomhead, P. McClintock,
T. Mullins
- 26
- E. Westkämper, A. Henning, G. Radons, R. Friedrich,
T. Ditzinger: Cutting edge quality through process modeling of
the abrasive waterjet, CIRP 2000 (Capri)
- 27
- R. Friedrich, T. Ditzinger, A. Henning, G. Radons:
Mechanisms of the evolution of spatiotemporal instabilities in
abrasive waterjet cutting, 6th Pacific Rim International
Conference on Water Jetting Technology, Sydney (2000)
- 28
- R. Friedrich:Stochastic approach to the analysis
of manufacturing processes
Proceedings, COST-P4 Workshop Characterization
of manufacturing processes: Synergetics and Data Processing methods,
Ljubljana, 23.-24. 5. 2000
- 29
- T. Ditzinger, R. Friedrich, S. Merkel,
A. Henning, G. Radons:
Front instabilities and cutting processes, Proceedings,
3rd international Symposium 'Investigation of Nonlinear Dynamic
Effects in Production Systems, Cottbus, 26.-27. 9. 2000
- 30
- G. Radons
T. Ditzinger, R. Friedrich,
A. Henning, T. Kübler:
Origin and Control of Ripple Formation in Beam Cutting
Techniques
Proceedings, COST-P4 Workshop, Budapest
- Buchveröffentlichungen
-
R. Friedrich, A. Wunderlin, Evolution of Dynamical Structures
in Complex Systems, Proceedings of the International Symposium,
Stuttgart, July 16-17, 1992
(Springer Proceedings in Physics vol. 69, 1992)
2001-12-19