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We present a 2D-and 3D-lattice Boltzmann model for the treatment of free surface flows including gas diffusion. Interface advection and related boundary conditions are based on the idea of the lattice Boltzmann equation. The fluid dynamic boundary conditions are approximated by using the mass and momentum fluxes across the interface, which do not require(More)
Based on experiences from the NATSCAN-project this contribution focuses on the evaluation of two hypotheses: (i) Terrestrial laser scanning and corresponding data analysis is ready to be used in standardized forest inventory sampling. (ii) Data quality as well as characteristics related to the technique of laser scanning widen the data base for forest(More)
In the Natscan project terrestrial laser scanning is used for deriving detailed information about tree quality and forest stand parameters. The authors describe an automatic method for determining tree positions and diameters at breast height (DBH) using terrestrial laser scanner data. Special attention is given to the data-processing that must be carried(More)
A method for extracting forest parameters is described in this paper. The 3D point clouds derived from phase difference laser scanners in forests were processed in a step-wise separation. The first step contains basic filter methods to reduce raw data which, separates isolated points or deletes those artefacts resulting from the ambiguity problem. The next(More)
We expand Denzau and Munger's 1986 model of " How Unorganized Interests Get Represented " to address cross-national differences in electoral systems. We look at how individual legislators allocate their efforts to serving unorganized constituents versus organized groups. Our model shows how the optimal allocation of effort is affected by differences in(More)
In this paper, we present an efficient exploration algorithm for architecture/compiler co-designs of application-specific instruction-set processors. The huge design space is spanned by processor architecture parameters as well as different compiler optimization strategies. The objective space is multi-dimensional including conflicting objectives such as(More)
Timbre distance and similarity are an expression of the phenomenon that some music appears similar while other songs sound very different to us. The notion of genre is often used to categorize music, but songs from a single genre do not necessarily sound similar and vice versa. In this work we analyze and compare a large amount of different audio features(More)
Timbre distances and similarities are an expression of the phenomenon that some music appears similar while other songs sound very different to us. The notion of genre is often used to categorize music, but songs from a single genre do not necessarily sound similar and vice versa. Instead we aim at a visualization of timbre similarities of sound within a(More)