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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.
In diesem ersten Bericht wird über den Problemkreis Kinder- und Jugendkriminalität gehandelt. Damit soll versucht werden, neue Argumentationsansätze in die aktuelle Diskussion über die allgemeine Verbrechensbekämpfung („Erfolgsmodell New York"1) und die spezielle Behandlung von Heranwachsenden2 einzubringen.
Inhaltsübersicht I. Vereinte Nationen II. Rechtsbeistand im nationalen Vergleich III. Strafjustiz gegenüber Kindern IV. Erstbericht der Bundesrepublik Deutschland zur Kinderrechtskonvention
In modern political philosophy social contract theory is the most prominent approach to individual rights and fair institutions. According to social contract theory the system of rights in a society ought to be justified by reconstructing its basic features as a contract between the mutually unconcerned members of society. This paper explores whether social contract theory can successfully be applied to justify rights of future generations. Three competing views are analysed: Rawls's theory of justice, Hobbes's radical liberalism and Gauthier's bargaining framework based on the Lockean proviso.
The paper is an enquiry into dynamic social contract theory. The social contract defines the rules of resource use. An intergenerational social contract in an economy with a single exhaustible resource is examined within a framework of an overlapping generations model. It is assumed that new generations do not accept the old social contract, and access to resources will be renegotiated between any incumbent generation and their successors. It turns out that later generations will be in an unfortunate position regardless of their bargaining power.
This paper opens a series of discussion papers which report about the findings of a research project within the Phare-ACE Programme of the European Union. We, a group of Bulgarian, German, Greek, Polish and Scottish economists and agricultural economists, undertake this research to provide An Integrated Analysis of Industrial Policies and Social Security Systems in Countries in Transition.1 This paper outlines the basic motivation for such study.
Hegemonialmächte im Vorderen und Mittleren Orient : die Dritte Partei in internationalen Konflikten
(1997)
During the last five decades hegemons played an important role in de-escalating international conflicts in the subregion defined as the core of Oriens Islamicus. Statistical analysis of large datasets shows that half of all conflicts remained without any interference from the hegemonial powers at all - both on global scale and in the subregion. In all other cases however, hegemons (especially super-powers in the role of patrons) tended more often to act as (power-) mediators when their client-state was engaged in conflict with a client of the opposing superpower in Oriens Islamicus than they did on global scale. They did this in their own interest in order to avoid direct involvement, i.e. possible danger of a nuclear escalation. In contrast to conventional mediation theory they were more effective in conflict de-escalation than other mediators, especially in conflicts between Israel and its Arab neighbours. The end of bipolarity in the international system also brought this mechanism of de-escalation to an end. It leaves the hegemon(s) as a potentially powerful third party on the one hand, but on the other their inclination to become involved in regional conflict remains rather diminished as long as the basic national interests in the area are not at stake.