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In industry, engineers usually design equipment to perform given tasks, while the particular technologies employed for the solution do not matter greatly. In contrast, traditional university courses are related to the training of specific techniques. In order to bridge this gap, a robotics workshop has been introduced into the final year curriculum of the… (More)

- Otto Rösch
- 2004

We study (inverse) photoemission from systems with strong coupling of doped carriers to phonons. Using an adiabatic approximation, we develop a method for calculating spectra. This method is particularly simple for systems where the electron-phonon coupling can be neglected in the initial state, e.g., the undoped t-J model. The theory then naturally… (More)

- Otto Rösch, Olle Gunnarsson
- Physical review letters
- 2004

We study the interaction of electrons with phonons in strongly correlated solids, having high-T(c) cuprates in mind. Using sum rules, we show that the apparent strength of this interaction strongly depends on the property studied. If the solid has a small fraction (doping) delta of charge carriers, the influence of the interaction on the phonon self-energy… (More)

- Otto Rösch, Olle Gunnarsson, +6 authors Shin-ichi Uchida
- Physical review letters
- 2005

We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calculate the electron-phonon coupling and find that it is strong enough to give self-trapped polarons. We develop an efficient method for calculating ARPES spectra in undoped… (More)

- Klaus Schilling, Hubert Roth, Otto Rösch
- KI
- 2000

- Otto Rösch, Olle Gunnarsson
- Physical review letters
- 2004

We derive a t-J model with electron-phonon coupling from the three-band model, considering modulation of both hopping and Coulomb integrals by phonons. While the modulation of the hopping integrals dominates, the modulation of the Coulomb integrals cannot be neglected. The model explains the experimentally observed anomalous softening of the half-breathing… (More)

- Ulrich Dardenne, Otto Rösch
- Bericht über die Zusammenkunft. Deutsche…
- 1961

- Asif Iqbal, Otto Rösch, H. Roth, Asad Rasool
- 2005

Stabilizing controllers for non-linear input delay system of a lab helicopter are designed by first using a 3D search in the controller parameter space, the bounds of which are estimated by over-conservative controller parameters given by Lyapunov Razumikhin theory. Simulated Annealing and Genetic Algorithms are then used to find near-optimal controller… (More)

- Otto Rösch, H. Roth, Asif Iqbal
- 2005

In this paper, upper bounds for time-varying delays in the real-time control of a lab helicopter in the sense of practical stability analysis are derived. Sub-optimal controller parameters for this non-linear plant with a given maximum time-delay are calculated with the help of Lyapunov-Razumikhin method using LMIs (Linear Matrix Inequalities). These… (More)

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