Gerwald Lichtenberg

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This paper gives an overview of the theoretical basis of the norm optimal approach to iterative learning control followed by results that describe more recent work which has experimentally bench-marking the performance that can be achieved. The remainder of this paper then describes its actual application to a physical process and a very novel application(More)
A new approach for modelling the dynamics of gene expression from time series microarray data is presented. A modelling method based on a continuous representation of Boolean functions in the form of Zhegalkin Polynomials is proposed. Structural information known from theoretical biology like the canalizing property can be included as well as continuous(More)
It has been observed that genetic regulatory networks share many characteristics with Boolean networks such as periodicity, self organization etc. Moreover it is also a known fact that in these networks, most genes are governed by canalizing Boolean functions. However, the actual gene expression level measurements are continuous valued. To combine discrete(More)
The operation of a Free Electron Laser in the X-ray wavelength range is the goal of the international XFEL project. The project critically depends on the linear accelerator component, where radio frequency fields have to be controlled with a very high amplitude and phase precision and under various sources of disturbances. This paper is about finding(More)
A new approach to modeling gen expression dynamics is presented. Unlike other modeling approaches, the presented method can cope with both: discrete biological rules, namely the canalizing property of gen interaction as well as continuous measurement data. This is possible due to the use of continuous valued Zhegalkin polynomials which are able to represent(More)
— This paper shows a mixed sensitivity H∞ controller design, which uses the symmetric radio frequency system structure of a free electron laser. The controller design includes plant decoupling, which is needed for additional feedbacks. Furthermore unwanted additional resonant modes, so-called passband modes are suppressed. This paper shows a strategy by(More)
Transformationstests als In-vitro-Nachweis von Kanzerogenen werden seit einiger Zeit zur Anwendungsreife entwickelt. Bei der Auswertung solcher Tests werden transformierte Zellkolonien mit der Stereolupe ausgezählt. Wir haben in einem Transformationstest, mit epithelialen Nierenzellen vom Hund als Zielzellen, die Möglichkeit einer automatisierten(More)