Landwirtschaftliche Fakultät: Suche
Anzeige der Dokumente 41-50 von 70
Zur Entwicklung und Bewertung der absoluten GNSS-Antennenkalibrierung im HF-Labor
(2010-07-09)
Bei der relativen Positionsbestimmung mit GNSS-Verfahren stellen die Antenneneinflüsse, die sich durch eine richtungsabhängige Empfangscharakteristik auszeichnen, einen der die Genauigkeit begrenzenden Faktoren dar. Durch ...
Non-invasive monitoring of water and solute fluxes in a cropped soil
(2010-12-15)
Although the influence of root water uptake on solute transport is commonly recognized as important, it has barely been studied throughout the literature. However, plants take up a big amount of the infiltrating water and ...
The role of abiotic processes in the formation and degradation of gaseous nitrogen compounds in the soil
(2015-09-24)
Soils are a major source of nitrogen (N) trace gases, especially of nitrous oxide (N2O) and nitric oxide (NO). The two microbial processes nitrification and denitrification are considered the major contributors ...
Analyse der Konfiguration bei der Approximation ungleichmäßig abgetasteter Oberflächen auf Basis von Nivellements und terrestrischen Laserscans
(2015-07-30)
Seit einigen Jahren unterliegt der Bereich der Ingenieurgeodäsie einem starken Wandel, da sich diese Disziplin generell den stetig weiterentwickelnden, anwendungsbezogenen Problemstellungen widmet. Unter diesen Aspekten ...
Convex Optimization for Inequality Constrained Adjustment Problems
(2015-10-14)
Whenever a certain function shall be minimized (e.g., a sum of squared residuals) or maximized (e.g., profit) optimization methods are applied. If in addition prior knowledge about some of the parameters can be expressed ...
Interpretation of L-band brightness temperatures of differently tilled bare soil plots
(2015-12-03)
The structure of the surface soil layer is strongly influenced by soil tillage practices with important consequences for the soil hydraulic properties and soil moisture dynamics in the top soil layer. In this study, an ...
Assessment of health-related risks associated with domestic water uses in the Mekong Delta of Vietnam
(2015-02-27)
The Mekong Delta in the South of Vietnam is characterized by its intensive agricultural production. Access to safe and clean water supplies for drinking and domestic services is poor, especially for rural communities. ...
Entwicklung einer direkten Georeferenzierungseinheit zur Positions- und Orientierungsbestimmung leichter UAVs in Echtzeit
(2016-09-27)
Seit einigen Jahren werden im Bereich der Geodäsie immer häufiger auch Unmanned Aerial Vehicles (UAVs) als kinematische Trägerplattformen eingesetzt. Dazu werden diese mit objekterfassender Sensorik, wie z.B. Digitalkameras ...
Statistical relational learning of semantic models and grammar rules for 3D building reconstruction from 3D point clouds
(2016-11-04)
Formal grammars are well suited for the estimation of models with an a-priori unknown number of parameters such as buildings and have proven their worth for 3D modeling and reconstruction of cities. However, the generation ...
Streamwater transit time distributions at the catchment scale: constraining uncertainties through identification of spatio-temporal controls
(2016-04-08)
Precipitation water traveling through a catchment takes faster and slower flow paths to reach the outlet. The knowledge about the distribution of relevant flow paths in a catchment and their respective transit times of ...