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Two-dimensional bouyancy-driven convection in a horizontal fluid layer with stress-free boundary conditions at top and bottom and periodic boundary conditions in the horizontal direction is investigated by means of numerical simulation and bifurcation-analysis techniques. As the bouyancy forces increase, the primary stationary and symmetric convection rolls undergo successive Hopf bifurcations, bifurcations to traveling waves, and phase lockings. We pay attention to symmetry breaking and its connection with the generation of large-scale horizontal flows. Calculations of Lyapunov exponents indicate that at a Rayleigh number of 2.3×105 no temporal chaos is reached yet, but the system moves nonchaotically on a 4-torus in phase space.
Germany gained its unity, but the restoration of virtual national cohesion presents itself as a lasting problem. The rebuilding of common national identity forms one complex aspect. Particular West and East German political, social and cultural features still exist. The East Germans brought elements of a peculiar identity into the unity; as a repercussion of some setbacks in their position and of some actual inter-German distinctions, their peculiarities are not yet in retreat. They prolong their role as conventional feelings, in temporary behaviours as an answer to their actual stance, and to a certain extent also with traits staged and suggested by entrenched media interpretations about the presently hampered inter-German evolution.
The dynamics of noisy bistable systems is analyzed by means of Lyapunov exponents and measures of complexity. We consider both the classical Kramers problem with additive white noise and the case when the barrier fluctuates due to additional external colored noise. In case of additive noise we calculate the Lyapunov exponents and all measures of complexity analytically as functions of the noise intensity resp. the mean escape time. For the problem of fluctuating barrier the usual description of the dynamics with the mean escape time is not sufficient. The application of the concept of measures of complexity allows to describe the structures of motion in more detail. Most complexity measures sign the value of correlation time at which the phenomenon of resonant activation occurs with an extremum.
Tagungsbericht: Weiß, Norman: Der Europäische Gerichtshof für Menschenrechte - Organisation und Verfahren - Fragen der Umsetzung des Protokolls Nr. 11 zur Europäischen Menschenrechtskonvention (EMRK) <1997, Potsdam> / 4. wiss. Tagung des Menschenrechtszentrums der Universität Potsdam, Generalsekretariat des Europarates am 19., 20. September 1997
Inhaltsübersicht I. Einführung in die Grundlagen der Europäischen Menschenrechtskonvention 1. Entstehung und Ziele der Konvention 2. Überblick über die materiellen Inhalte der Konvention 3. Organe der Konvention 4. Entscheidungen II. Das Individualrechtsschutzverfahren nach geltendem Recht 1. Überblick 2. Verfahren vor der Kommission I (Zulässigkeit) 3. Vorläufige Maßnahmen 4. Verfahren vor der Kommission II (Meritorisches Verfahren) 5. Verfahren vor dem Gerichtshof (Begründetheit) 6. Entscheidung des Ministerkomitees 7. Kontrollverfahren 8. Entscheidungswirkung III. Das Indivudualbeschwerdeverfahren nach künftigem Recht IV. Bewertung V. Prüfungsschema VI. English summary
Einführung in den Individualrechtsschutz nach der Anti-Folter-Konvention der Vereinten Nationen
(1997)
This article gives a short introduction in the United Nations Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment. Focussing on the individual communications, it describes the admissibility conditions and the procedure before the Committee.