Bahraminasab, A., Ghasemi, F., Stefanovska, A., McClintock, P. V. E., Friedrich, R.
We use drift and diffusion coefficients to reveal interactions between different oscillatory processes underlying a complex signal and apply the method to EEG delta and theta frequencies in the...
Thin film dynamics with surfactant phase transition (2009)
Köpf, M. H., Gurevich, S. V., Friedrich, R.
A thin liquid film covered with an insoluble surfactant in the vicinity of a first-order phase transition is discussed. Within the lubrication approximation we derive two coupled equations to...
The role of external forces in systems exhibiting anomalous diffusion is discussed on the basis of the describing Langevin equations. Since there exist different possibilities to include the effect...
Curci, G., Beekmann, M., Vautard, R., Smiatek, G., Steinbrecher, R., Theloke, J., ...
Atmospheric Environment, 43(2009) S.1444-55
Continuous time random walks are non-Markovian stochastic processes, which are only partly characterized by single-time probability distributions. We derive a closed evolution equation for joint...
Curci, G., Beekmann, M., Vautard, R., Bessagnet, B., Menut, L., Hodzic, A., ...
Bridging the Scales in Atmospheric Chemistry : Local to Global, IGAC 10th Internat.Conf., Annecy, F, September 7-12, 2008
Curci, G., Beekmann, M., Vautard, R., Smiatek, G., Steinbrecher, R., Pfeiffer, H., ...
European Geosciences Union (EGU) General Assembly, Wien, A, April 15-20, 2007
Maximum Likelihood Estimation of Drift and Diffusion Functions (2006)
The maximum likelihood approach is adapted to the problem of estimation of drift and diffusion functions of stochastic processes from measured time series. We reconcile a previously devised iterative...
Verfahren zur Herstellung von Mikrokapseln (2003)
Schmidt, F.G., Pawlik, A., Rafler, G., Lang, J., Friedrich, R.
WO2003042274 A UPAB: 20030723 NOVELTY - A method for the production of polyurea-based microcapsules with liquid and/or solid contents, in which the capsule walls are produced from polyurea-containing...
Slemr, F., Baumbach, G., Blank, P., Corsmeier, U., Fiedler, F., Friedrich, R., ...
Seiler, W. [Hrsg.]
Emissions of gases and particles to the atmosphere in Europe. (2003)
Hewitt, N., Friedrich, R., Munthe, J., Nemitz, E., Steinbrecher, R.
Midgley, P. [Hrsg.]
Verfahren zum Schneiden von Werkstuecken mit einem Schneidstrahl (2002)
Radons, G., Friedrich, R., Ditzinger, T., Henning, A.
DE 10036146 C UPAB: 20020204 NOVELTY - The cutting method has a cutting beam displaced relative to the workpiece along a cutting line, with at least one cutting parameter affecting the surface...
Janietz, S., Wedel, A., Friedrich, R.
Thianthrene polymer of formula (I) is new:(-A-B-)m (I); A = thianthrenediyl of formula (i); B = group (ii), (iii), (iv), (v) and/or (vi); R = 1-16C alkyl optionally with 1 or 2 CH2 replaced by O or...
Comparison of modelled and measured total CO and NOx emission rates (2002)
Kühlwein, J., Friedrich, R., Kalthoff, N., Corsmeier, U., Slemr, F., Habram, M., ...
Hourly total CO and NOx emission rates determined experimentally from the city of Augsburg, a medium-sized city in southern Germany, were compared with data calculated with a high-resolution emission...
Comparison of modelled and measured total CO and NO§x emission rates. (2002)
Kühlwein, J., Friedrich, R., Kalthoff, N., Corsmeier, U., Slemr, F., Habram, M., ...
Atmospheric Environment, 36(2002) Suppl.No.1, S.S53-S60
Development of emission models and improvement of emission data for Germany. (2002)
Friedrich, R., Wickert, B., Blank, P., Emeis, S., Engewald, W., Hassel, D., ...
Journal of Atmospheric Chemistry, 42(2002) S.179-206
The research project EVA - general objectives and main results. (2002)
Slemr, F., Friedrich, R., Seiler, W.
Atmospheric Environment, 36(2002) Suppl.1, S.1-6
Markov properties of high frequency exchange rate data (2001)
Renner, C., Peinke, J., Friedrich, R.
We present a stochastic analysis of a data set consisiting of 10^6 quotes of the US Doller - German Mark exchange rate. Evidence is given that the price changes x(tau) upon different delay times tau...
Proposal for the suppression of ripple formation in beam cutting techniques (2001)
Friedrich, R., Kübler, T., Henning, A., Radons, G.
Introduction: Waterjet machining is a very flexible and advanced industrial technique for cutting and shaping all sorts of materials ranging from plastic to steel or ceramic. However, the effectivity...
Self-Aware Services: Using Bayesian (2001)
Networks For Detecting, A. Bronstein, J. Das, M. Duro, R. Friedrich, G. Kleyner, ...
We propose a general architecture and implementation for the autonomous assessment of health of arbitrary service elements, as a necessary prerequisite to self- control. We describe a health engine,...
Comparison of measured and calculated motorway emission data. (2000)
Vogel, B., Corsmeier, U., Vogel, H., Fiedler, F., Kühlwein, J., Friedrich, R., ...
Atmospheric Environment, 34(2000) S.2437-50
The Performance Impact of Workload Characterization for Distributed Applications using ARM (1998)
F. Elrayes, J. Rolia, R. Friedrich
This paper describes operating system process, software, and business function oriented workload characterization abstractions for distributed applications. Many can be supported directly by ARM 2.0....
Obermeier, A., Friedrich, R., John, C., Seier, J., Vogel, H., Fiedler, F., ...
FZKA-PEF 162 (Dezember 97)
BAB656 - an integrated field campaign for the evaluation of highway emission data. (1998)
Vogel, B., Corsmeier, U., Vogel, H., Fiedler, F., Kalthoff, N., Weppner, J., ...
EUROTRAC Symp. 'Transport and Chemical Transformation of Pollutants in the Troposphere', Garmisch-Partenkirchen, March 23-27, 1998
A new approach to characterize disordered structures (1997)
Peinke, J ; JFA; CORA, Friedrich, R, Naert, Antoon; U0031916 ;
A new application of the theory of Markov processes to the characterization of fractal scaling behavior is presented. We show under which condition distinct stochastic processes of a cascade lead to...
Bullinger, H.-J., Friedrich, R.
The necessity to put the "Management of Change" on a broad strategy-oriented basis is shown. New working style in the enterprise is to be found, and new business field is to be worked out. Both will...
Berner, P., Obermeier, A., Friedrich, R., Ondratschek, D., Schaber, K.
FZKA-PEF 147 (Oktober 96)
Aggregation factors and rate constants derived for the emission conditions in the TRACT area. (1995)
Vogel, H., Fiedler, F., Vogel, B., Chang, J.S., Obermeier, A., John, C., ...
Borrell, P. [Hrsg.]
Photosmog : Möglichkeiten und Strategien zur Verminderung des bodennahen Ozons (1995)
Obermeier, A., Friedrich, R., John, C., Seier, J., Vogel, H., Fiedler, F., ...
Obermeier, A., Berner, P., Friedrich, R., John, C., Seier, J., Büringer, H., ...
FZKA-PEF 129 (April 95)
Defect motion in rotating fluids (1995)
Millán-Rodríguez, J., Bestehorn, M., Pérez-García, C., Friedrich, R., Neufeld, M.
Eine neue Generation von ISO/MPEG Audio Layer III Codern (1994)
Buchta, R., Eberlein, E., Friedrich, R., Grill, B., Herre, J., Koller, J., ...
Ein entscheidender Punkt in der Entwicklung der Datenreduktion für hochwertige Audiosignale war die internationale Standardisierung einer Familie von Verfahren als ISO/IEC 11172-3 (ISO/MPEG-Audio)....
Two Dimensional String Matching for Non-Rectangular Patterns (1994)
R. Friedrich, Th. Ottmann, S. Schuierer
The two dimensional string matching problem is to find the occurrences of a two dimensional pattern in a two dimensional text. Usually, the pattern is assumed to be a rectangle or even a square. In...
Pattern formation in convective of rotating fluids with broken vertical symmetry (1992)
Millán-Rodríguez, J., Pérez-García, C., Bestehorn, M., Fantz, M., Friedrich, R.
Obermeier, A., Friedrich, R., John, C., Voss, A.
KfK-PEF 78 (Februar 91)
Mueller, Th., Boysen, B., Friedrich, R., Voss, A.
KfK-PEF 71 (Juli 90)
Friedrich, R., Winter-Hoos, R., Altenhein, A.
KfK-PFT 147 (August 89)
Boysen, B., Mattis, M., Friedrich, R., Voss, A.
KfK-PEF 54 (September 89)
Bullinger, H.-J., Friedrich, R., Niemeier, J.
Voss, A., Friedrich, R., Boysen, B., Mattis, M., Bach, H., Claus, G., ...
KfK-PEF 27 (September 87)
Markov properties of high frequency exchange rate data
C. Renner, J. Peinke, R. Friedrich
We present a stochastic analysis of a data set consisiting of 10^6 quotes of the US Doller - German Mark exchange rate. Evidence is given that the price changes x(tau) upon different delay times tau...
Maximum Likelihood Estimation of Drift and Diffusion Functions
The maximum likelihood approach is adapted to the problem of estimation of drift and diffusion functions of stochastic processes from measured time series. We reconcile a previously devised iterative...