Fakultäten der Universität Bonn: Suche
Anzeige der Dokumente 11-20 von 27
The Impact of Mineral Dust Aerosol Particles on Cloud Formation
(2007)
This investigation examines the role of selected mineral dust samples in heterogeneous ice nucleation. The experiments were done by seeding artificial clouds in the large aerosol chamber AIDA at temperatures between 273 ...
Modelling the holocene sediment budget of the Rhine system
(2007)
Rivers transport large amounts of water, sediments, nutrients and carbon from the continents to the oceans. Thus, they are important links within the global biogeochemical cycle. To understand biogeochemical fluxes in river ...
Soil Moisture Analysis Based On Microwave Brightness Temperatures: A Study on Systematic and Random Errors
(2007)
In the context of the EU research project ELDAS, the European Centre for Medium-Range Weather Forecasts developed an experimental soil moisture analysis system which is able to assimilate both screen-level variables (2-metre ...
Hydrogeological characterization of the Upper Drâa catchment: Morocco
(2007)
The Drâa valley located in the south of Morocco is a typical semi-arid area facing water scarcity problems. This Ph.D. thesis is part of the interdisciplinary research project IMPETUS (integrated approach to the efficient ...
Die reliefabhängige Schneedeckenverteilung im Hochgebirge: ein multiskaliger Methodenverbund am Beispiel des Lötschentals (Schweiz)
(2007)
Das kleinräumig und zeitlich variierende Verteilungsmuster der Schneedecke steuert im Hochgebirge maßgeblich das ökosystemare Prozessgeschehen, so dass dessen Erfassung für weitergehende Analysen und ökosystemare ...
Groundwater potential to supply population demand within the Kompienga dam basin in Burkina Faso
(2007)
Groundwater recharge is constrained by various factors with rainfall playing a key role. The Kompienga dam basin located in southeastern Burkina Faso displays semi-arid climatic conditions with rainfall occurring five ...
On the theory and application of model misspecification tests in geodesy
(2007)
Many geodetic testing problems concerning parametric hypotheses may be formulated within the framework of testing linear constraints imposed on a linear Gauss-Markov model. Although geodetic standard tests for such problems ...
On Monte Carlo methods with applications to the current satellite gravity missions
(2007)
Large-scaled least squares problems require tailored numerical techniques to overcome the computational burden. For these types of problems iterative strategies are suitable because of their flexibility and effectiveness. ...
Grouping Uncertain Oriented Projective Geometric Entities with Application to Automatic Building Reconstruction
(2007)
The fully automatic reconstruction of 3d scenes from a set of 2d images has always been a key issue in photogrammetry and computer vision and has not been solved satisfactory so far. Most of the current approaches match ...
3D-Stadtmodellierung auf heterogenen Ausgangsmodellen mittels evolutionärer Algorithmen
(2007)
Die vorliegende Arbeit beschreibt ein neuartiges Verfahrens zur flexiblen und effizienten 3D-Stadtmodellierung im Kontext der Verfügbarmachung von 3D-Stadtmodellen. Ausgangspunkt ist die Heterogenität existierender und ...