Refine
Has Fulltext
- yes (123) (remove)
Year of publication
- 1998 (123) (remove)
Document Type
- Article (51)
- Preprint (32)
- Monograph/Edited Volume (23)
- Postprint (8)
- Part of Periodical (5)
- Doctoral Thesis (2)
- Other (2)
Keywords
Institute
- Extern (32)
- Institut für Mathematik (25)
- Zentrum für Umweltwissenschaften (25)
- MenschenRechtsZentrum (20)
- Wirtschaftswissenschaften (12)
- Department Erziehungswissenschaft (9)
- Interdisziplinäres Zentrum für Dynamik komplexer Systeme (9)
- Institut für Jüdische Studien und Religionswissenschaft (6)
- Institut für Physik und Astronomie (6)
- Institut für Umweltwissenschaften und Geographie (5)
Brandenburgisches Umweltforschungszentrum e.V.:
Arbeitsgruppe: Nachhaltigkeit ; Arbeitsgruppe: Umwelt- und Biotechnologie ; Arbeitsgruppe: Umweltmanagement ; Arbeitsgruppe: Umweltsoziologie ;
Zentrum für Umweltwissenschaften:
Arbeitsgruppe: Betriebliches Umweltmanagement/Umweltbewußtes Konsumentenverhalten ; Arbeitsgruppe: Grüne Bioraffinerie ; Arbeitsgruppe: Integrierter Arten- und Biotopschutz ; Arbeitsgruppe: LIDAR-Inversionen ; Arbeitsgruppe: FG Ökotechnologie ; Arbeitsgruppe: Regenerative Energien ; Arbeitsgruppe: Stoffdynamik in Geosystemen ; Arbeitsgruppe: Umweltbildung
Projekt: Nachhaltiges Brandenburg ; Projekt: Nachhaltige, umweltgerechte Regionalentwicklung in Ostprignitz-Ruppin ; Projekt: Entwicklung nachhaltiger Landnutzung; Projekt: Integrierte Umweltberatung und ökologische Zielsetzungen im Landkreis; Projekt: Fachinformationssystem Naturschutz und Landschaftspflege des Landesumweltamtes Brandenburg ; Projekt: Umweltverträglichkeitsprüfung ; Projekt: Planung und Projektierung der Abwasserentsorgung im Land Brandenburg (1990-1994)
The paper describes three stages of the privatisation process in Bulgaria 1990-1997. In the first period (1990-1993) progress was very slow. Only after 1993 a significant privatisation started. Mainly retail shops, restaurants and small businesses of various kinds were sold. In 1996 a programme for mass-privatisation was launched which has led to a widespread share-ownership in Bulgaria.
All countries of Central and Eastern Europe had to bear and are still bearing tremendous costs of the economic and political transformation. This paper deals with the case of Bulgaria. We describe the social situation and the most important social security institutions in Bulgaria (unemployment benefits, the pension system and family support) over the period of the last seven years.
Inhalt: Grundgedanken zur Entwicklung von Leitbildern -Leitbilder im Kontext eines Stadtmarketingkonzeptes -Ein Modell zur Entwicklung von Leitbildern -Das Leitbild als ein Element der Entwicklung eines Stadtmarketing- Konzepts -Funktion von Leitbildern -Anforderungen an Leitbilder Beispiele zur Leitbildentwicklung für die Städte Hennigsdorf und Potsdam
We have numerically studied the bifurcations and transition to chaos in a two-dimensional fluid for varying values of the Reynolds number. These investigations have been motivated by experiments in fluids, where an array of vortices was driven by an electromotive force. In these experiments, successive changes leading to a complex motion of the vortices, due to increased forcing, have been explored [Tabeling, Perrin, and Fauve, J. Fluid Mech. 213, 511 (1990)]. We model this experiment by means of two-dimensional Navier-Stokes equations with a special external forcing, driving a linear chain of eight counter-rotating vortices, imposing stress-free boundary conditions in the vertical direction and periodic boundary conditions in the horizontal direction. As the strength of the forcing or the Reynolds number is raised, the original stationary vortex array becomes unstable and a complex sequence of bifurcations is observed. Several steady states and periodic branches and a period doubling cascade appear on the route to chaos. For increasing values of the Reynolds number, shear flow develops, for which the spatial scale is large compared to the scale of the forcing. Furthermore, we have investigated the influence of the aspect ratio of the container as well as the effect of no-slip boundary conditions at the top and bottom, on the bifurcation scenario.
Parabolic equations on manifolds with singularities require a new calculus of anisotropic pseudo-differential operators with operator-valued symbols. The paper develops this theory along the lines of sn abstract wedge calculus with strongly continuous groups of isomorphisms on the involved Banach spaces. The corresponding pseodo-diferential operators are continuous in anisotropic wedge Sobolev spaces, and they form an alegbra. There is then introduced the concept of anisotropic parameter-dependent ellipticity, based on an order reduction variant of the pseudo-differential calculus. The theory is appled to a class of parabolic differential operators, and it is proved the invertibility in Sobolev spaces with exponential weights at infinity in time direction.