Bernd Wachmann

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The BioJournalMonitor is a decision support system for the analysis of trends and topics in the biomedical literature. Its main goal is to identify potential diagnostic and therapeutic biomarkers for specific diseases. Several data sources are continuously integrated to provide the user with up-to-date information on current research in this field.(More)
Many different methods exist for pattern detection in gene expression data. In contrast to classical methods, biclustering has the ability to cluster a group of genes together with a group of conditions (replicates, set of patients or drug compounds). However, since the problem is NP-complex, most algorithms use heuristic search functions and therefore(More)
Motivation: In the field of bioinformatics there is an emerging need to integrate all knowledge discovery steps into a standardized modular framework. Indeed, component-based development can significantly enhance reusability and productivity for short timeline projects with a small team. We present Interactive Knowledge Discovery and Data mining(More)
We present two Euler-Lagrangian simulation methods for particles immersed in uids described by the Navier-Stokes equation. These implement the coupling between particle and uid phase by (i) direct integration of the stress ten-sor on the particle surface discretized according to the grid topology and (ii) by a tracer particle method, which employs the(More)
We present a study on how to predict new emerging trends in the biomedical domain based on textual data. We thereby propose a way of anticipating the transformation of arbitrary information into ground truth knowledge by predicting the inclusion of new terms into the MeSH ontology. We also discuss the preparation of a dataset for the evaluation of emerging(More)
We use a recently developed algorithm to simulate and study the physics of bidis-perse suspensions of rigid spheres. We compute the settling velocity as a function of the ratio a L =a S 1 of the radius of the large a L and small a S particles at a solid volume fraction of = 0:14 and compare our results to predictions of the theory by Batchelor and a(More)
Hydrodynamic dispersion, i.e., a single particle mean square displacement growing linear in time, occurs in settling non-Brownian mono-disperse suspensions. We use a novel two-dimensional simulation technique for disk-shaped particles settling in a uid at particle Reynolds numbers up to about Re = 20 to study hydrodynamic dispersion in the bulk suspension(More)
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