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Kohlert D.,Regensburg University of Applied Sciences | Schreier F.,German Aerospace Center
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing | Year: 2011

Radiative transfer modelling of high resolution infrared (or microwave) spectra still represents a major challenge for the processing of atmospheric remote sensing data despite significant advances in the numerical techniques utilized in line-by-line modelling by, e.g., optimized Voigt function algorithms or multigrid approaches. Special purpose computing hardware such as Field Programmable Gate Arrays (FPGAs) can be used to cope with the dramatic increase of data quality and quantity. Utilizing a highly optimized implementation of an uniform rational function approximation of the Voigt function, the molecular absorption cross section computation - representing the most compute intensive part of radiative transfer codes - has been realized on FPGA. Design and implementation of the FPGA coprocessor is presented along with first performance tests and an outlook for the ongoing further development. © 2011 IEEE.

Reinhardt D.,BMW AG | Kucera M.,Regensburg University of Applied Sciences
PECCS 2013 - Proceedings of the 3rd International Conference on Pervasive Embedded Computing and Communication Systems | Year: 2013

Electric and electronic functionalities increase exponentially in every mobility domain. The automotive industry is confronted with a rising system complexity and several restricting requirements and standards (like AUTOSAR), in particular to design embedded software for electronic control units. To stand against rampant functionalities software units could be restructured according to their affiliation and should not be attached to a certain place. This can be effected by integration on single controllers. On the one hand the system wide amount of hardware controllers could such be limited. On the other hand the workload for integration CPUs will rise. To support this paradigm, multi-core systems can provide enough processing power in an efficient way. This paper shows a first approach to combine automotive functionality on such a single controller.

Mottok J.,Regensburg University of Applied Sciences | Gardeia A.,Regensburg University of Applied Sciences
2011 IEEE Global Engineering Education Conference, EDUCON 2011 | Year: 2011

This paper describes the background and the theory of the learning arrangement The Regensburg Concept of P1 - Seminars and its potential fields of application. This conception was designed to meet the various requirements caused by the Bologna Accords and the restructuring of the senior years of German secondary school education. At the same time it aims at finding solutions for a severe problem topical in Germany: the lack of students qualifying in MINT (the fields of mathematics, informatics, natural sciences and techniques.) The focus of this conception is on the cooperation between universities and schools hence a draft of the P-Seminar has already been realized and evaluated during a pilot phase at a local secondary school. These experiences serve as a solid basis for the development of a concrete plan that makes it possible to transfer the concept to similar projects in future. In the following paragraphs keywords that are applied to the lexical field of the Regensburg Concept are elaborated e.g. practive learning, an interaction of practical and active learning. © 2011 IEEE.

Becke M.,Regensburg University of Applied Sciences | Schlegl T.,Regensburg University of Applied Sciences
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

The objectives of this work are the general derivation of a formal description of the equations of motion for a serial robot manipulator with ideal stiff joints subject to kinematic constraints such as complex mechanical couplings between actuator coordinates and joint coordinates. Therefore, the Lagrangian formalism is deployed for generation of the equations of motion. For evaluation, the feasibility and costs of coupling-induced change from general manipulator configuration description within joint space into actuator space are investigated at various stages during generation of equations of motion. © Springer-Verlag Berlin Heidelberg 2012.

Hocherl J.,Regensburg University of Applied Sciences | Schlegl T.,Regensburg University of Applied Sciences
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

For safe human-robot collaboration a technologically diverse and redundant sensor system is developed which comprises ultrasound sensors and two monocular camera systems. The sensor system recognizes human extremities in the collaboration area in which robot and human shall work together interactively. The robot controller calculates the shortest distance between the robot and a human operator. With the fused sensor data the controller determines how to adapt the robot behavior to avoid undesired physical contact with the human operator. © Springer-Verlag Berlin Heidelberg 2012.

Becke M.,Regensburg University of Applied Sciences | Schlegl T.,Regensburg University of Applied Sciences
Proceedings - IEEE International Conference on Robotics and Automation | Year: 2011

The objectives of this work are the design of an experimental methodology for evaluation of the behavior of human or animal joints under physiological load conditions and the setup of robotic systems using force-torque control (FTC) to apply these realistic force-motion trajectories to cadaveric joints. In this context also the benefits of FTC for biomechanical research were aimed to show. Therefore, integrated methods using FTC have been developed for application of test series to diarthrodial joints. In the work reported here, these methods were successfully deployed to dissected porcine knee joints. © 2011 IEEE.

Schiek R.,Regensburg University of Applied Sciences | Solntsev A.S.,Australian National University | Neshev D.N.,Australian National University
Applied Physics Letters | Year: 2012

We study the temporal dynamics of all-optical switching in nonlinear directional couplers in periodically poled lithium niobate. The characteristic features of such switching, including asymmetric pulse break-up and back-switching were measured in full agreement with the theoretical predictions. Based on the time-resolved measurement of intensity-dependent switching, finally the theoretically long-known continuous-wave switching curve has experimentally been confirmed. © 2012 American Institute of Physics.

Stoll A.,Regensburg University of Applied Sciences | Mayer M.,Regensburg University of Applied Sciences | Monkman G.J.,Regensburg University of Applied Sciences | Shamonin M.,Regensburg University of Applied Sciences
Journal of Applied Polymer Science | Year: 2014

Highly compliant elastomers with a shear storage modulus as low as 25 Pa are prepared using commercially available silicone, plasticizer, and tactile mutator silicone additive. They are used as matrix material for magneto-active elastomers (MAEs) with carbonyl iron contents between 0 and 85 wt %. In the absence of an external magnetic field, the storage modulus of MAEs based on two selected mixtures ranges between ∼100 Pa and ∼2000 Pa. Addition of a mutator to the matrix mixture results in a long post-cure period depending on the curing temperature and the initial mixture. In the presence of a magnetic field, the presented MAEs exhibit a strong magneto-induced change in storage modulus resulting in a colossal magnetorheological effect of >106 % which is ∼30 times higher than previously reported values. The results are of interest in applications using such elastomers as cell substrates with magnetically tunable rigidity. © 2013 Wiley Periodicals, Inc.

Purzer A.,Regensburg University of Applied Sciences
Journal of integrative bioinformatics | Year: 2011

Deducing common properties or degrees of phylogenetic relationship by analyzing a grouping or clustering of sequence sets is a frequently used technique in computational biology. If interpreted by means of visual inspection, the conclusions depend for many of these applications on meaningful names for the input data. In accordance with the aim of the analysis, the sequences should be provided with names indicating the function of the genes or gene-products, the phylogenetic position or other properties characterizing the contributing species. However, sequences extracted from databases are most often annotated with identifiers which only implicitly contain the desired information. To solve this problem, we have designed and implemented a tool named Key2Ann, which replaces in multiple fasta files the database keys with short terms indicating the taxonomic position or other features like the gene name or the EC-number. In addition, properties like habitat, growth temperature or the degree of pathogenicity can be coded for microbial species. To allow for highest flexibility, the user can control the composition of the names by means of command line parameters. Key2Ann is written in Java and can be downloaded via http://www-bioinf.uni-regensburg.de/downl/Key2Ann.zip. We demonstrate the usage of Key2Ann by discussing three typical examples of phylogenetic analysis.

Regensburg University of Applied Sciences | Date: 2010-10-05

The invention relates to a measuring apparatus comprising an apparatus for forming a liquid optical waveguide having a substrate (1) having an at least partially curved closed microchannel (2) having a low-refractive coating (13), whereby there is formed in the substrate (1) at least one feed line (6) for supplying liquid, and whereby there is provided at least at one end of the closed microchannel (2) an apparatus for coupling light axially into the closed microchannel and/or for coupling light axially out of the closed microchannel (2), further comprising a light source (4), a light detector (5), and a first liquid pump (9) which supplies a sample liquid (7) to the closed microchannel (2) via the at least one feed line (6, 6a).

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