TY - PAT A1 - Schäfer, Martin A1 - Döhring, Thorsten A1 - Seibert, Volker A1 - Westerhoff, Thomas A1 - Nowak, Hans-Joachim T1 - SUBSTRATE FOR MIRROR SUPPORT WITH REDUCED WEIGHT AND MIRROR PROVIDED WITH MIRROR SUPPORT WITH REDUCED WEIGHT N2 - To provide a substrate for a mirror support, in which there still remains a high rigidity, despite a reduced weight. ;SOLUTION: In a substrate, particularly in a substrate for a mirror support, in which recesses are introduced in one surface, preferably in the back side of the substrate, as a result of which, in particular, bridging pieces are defined between the recesses, in order to achieve the situation in which despite a reduced weight, a high rigidity still remains, which means only a slight sagging after the correct take-in of the substrate in a holding device provided for it, at least one first position of the bridging pieces includes a width that is different from a second portion of the bridging pieces. KW - astronomy KW - mirror KW - lightweight KW - Zerodur KW - ceramic KW - Spiegeloptik KW - Raumfahrt Y1 - 2013 UR - http://worldwide.espacenet.com/publicationDetails/biblio?CC=JP&NR=5244050B2&KC=B2&FT=D&ND=4&date=20130724&DB=EPODOC&locale=de_EP ER - TY - PAT A1 - Speit, Burkard A1 - Döhring, Thorsten A1 - Wolff, Silke T1 - Lead-containing space glass, its production and use N2 - The space glass has a composition, in wt. % based on oxide content, of: SiO2, 5-65; B2O3, 0-40; Al2O3, 0-12; PbO, 25-50; Na2O 0-8; K2O, 0-20; Sigma alkali metal oxides, at least 0.25; and at least 0.1 wt. % of a total amount of three or more doping agents selected from CeO2, MoO3, Bi2O3, WO3, Ag2O, SnO2, Sb2O3 and As2O3. In addition, it contains one or more of the following doping agents in the following amounts: at most 1 wt. %, CeO2; at most 0.02 wt. %, As2O3; at most 0.3 wt. %, Sb2O3; and at most 0.5 wt. %, SnO2. Light-weight optical systems for space are made from it, because of its high radiation resistance. A preferred process for making space glass includes melting the oxide starting ingredients at 1050 DEG C. to 1200 DEG C. to form a melt and refining the melt at 1230 DEG C. to 1350 DEG C. KW - glass KW - space KW - satellite KW - Optisches Glas KW - Raumfahrt Y1 - 2013 UR - http://worldwide.espacenet.com/publicationDetails/biblio?CC=US&NR=8431500B2&KC=B2&FT=D&ND=4&date=20130430&DB=EPODOC&locale=en_EP ER - TY - CHAP A1 - Lieb, Florian T1 - Audio Inpainting Using M-Frames T2 - Current Trends in Analysis and Its Applications N2 - Classical short-time Fourier constructions lead to a signal decomposition with a fixed time-frequency resolution. However, having signals with varying features, such time-frequency decompositions are very restrictive. A more flexible and adaptive sampling of the time-frequency plane is achieved by the nonstationary Gabor transform. Here, the resolution can evolve over time or frequency, respectively, by using different windows for the different sampling positions in the time or frequency domain (Multiwindow-frames). This adaptivity in the time-frequency plane leads to a sparser signal representation. In terms of audio inpainting, i.e., filling in blanks of a depleted audio signal, sparsity in some representation space profoundly influences the quality of the reconstructed signal. We will compare this quality using different nonstationary Gabor transforms and the regular Gabor transform with different types of audio signals. KW - Audio inpainting KW - Convex optimization KW - Nonstationary Gabor frames KW - ERBlet Transform KW - Constant-Q transform KW - Mathematik KW - Aufsatzsammlung Y1 - 2013 SN - 978-3-319-12576-3 U6 - https://doi.org/10.1007/978-3-319-12577-0_77 VL - 2015 SP - 705 EP - 713 PB - Springer International Publishing ER - TY - CHAP A1 - Lantzberg, Daniel T1 - Rank-M Frame Multipliers and Optimality Criterions for Density Operators of Rank M T2 - Current Trends in Aanalysis and Its Applications N2 - Ever since the introduction of frames in 1952 [4], the connection between frame theory and decompositions of certain operators, particularly the identity operator, into rank-ones began to be elaborated. Abandoning the idea of restricting to tight frame-like expansions, with respect to systems arising from a single template function, one is led to the concept of resolutions of the identity, with respect to more general systems than the usual rank-one expansions of the identity. In this study, we will investigate various notions of possible generalizations of optimality criterions for rank-M frames and corresponding multipliers. Explicitly, we will lay stress on continuous M-frames, arising from irreducible group representations of locally compact groups, have a look at its connection to time-frequency analysis and comment on adequate notions of optimality. KW - Frames KW - Multipliers KW - Operator Approximation KW - Locally Compact Groups KW - Uncertainty Principle KW - Mathematik KW - Aufsatzsammlung Y1 - 2013 SN - 978-3-319-12576-3 U6 - https://doi.org/10.1007/978-3-319-12577-0_76 VL - 2015 SP - 695 EP - 704 PB - Springer ER - TY - CHAP A1 - Abke, Jörg A1 - Gold, Carolin A1 - Roznawski, Nina A1 - Schwirtlich, Vincent A1 - Sedelmaier, Yvonne T1 - A New Approach to Collaborative Learning in Software Engineering Focussed on Embedded Systems T2 - 2013 International Conference on Interactive Collaborative Learning (ICL) N2 - Software Engineering is a very complex and abstract process and therefore hard to learn and hard to teach. Especially in mechatronics software engineering is not the main focus of the university studies. Therefore students have little understanding and low motivation to spend time on it. In this paper, we share some experiences on how we tried to give students a deeper understanding for software engineering, its processes and the complexity of software engineering projects. To that end, we chose a new didactical approach consisting of direct instruction and activating learning styles in parallel. The classical lectures were supplemented by a seminar and a project phase to allow students to apply their theoretical learned knowledge without delay in realistic settings. We combined active and passive learning styles to give students the opportunity to consolidate factual knowledge, foster soft skills (e.g. presentation and communication skills), improve team work and gain a deeper understanding of software engineering processes. The experiences of our courses in summer semesters 2010 and 2012 lead to a further development of our didactical approach in 2013. As a consequence, we tried further methods to spread needed information across the student working groups by using a wiki-system, a market of knowledge or mixing the groups between seminar and project phase. At the end of the seminar phase quality gates were implemented and also awards at the end of the project phase. Systematically evaluations at the end of the seminar phase and at the end of the project work show the learning outcomes and possible further improvements of our didactical approach. KW - Software Engineering KW - Kooperatives Lernen Y1 - 2013 SN - 978-1-4799-0152-4 U6 - https://doi.org/10.1109/ICL.2013.6644663 SP - 610 EP - 616 PB - IEEE ER - TY - CHAP A1 - Döhring, Thorsten T1 - The market of huge monolithic mirror substrates for optical astronomy T2 - Proceedings of SPIE 8837, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems, 883702 KW - Mirrors KW - Astronomy KW - Astronomical telescopes KW - Optical components KW - Optical systems KW - Spiegelteleskop Y1 - 2013 U6 - https://doi.org/10.1117/12.2023652 IS - 8837 ER - TY - CHAP A1 - Rung, Stefan A1 - Rexhepi, Mal A1 - Hellmann, Ralf T1 - Beam shaping for enhanced through-put of laser ablation of transparent conductive films T2 - Proceedings of the XXVII MicroCAD International Scientific Conference KW - Laserablation Y1 - 2013 VL - 2013 ER - TY - JOUR A1 - Rung, Stefan A1 - Rexhepi, Mal A1 - Bischoff, Christian A1 - Hellmann, Ralf T1 - Laserscribing of thin films using top-hat laser beam profiles JF - Journal of Laser Micro/Nanoengineering KW - Laser scribing KW - laser beam shaping KW - Top-Hat KW - Dünne Schicht KW - Laser Y1 - 2013 VL - 8 IS - 3 SP - 309 EP - 314 ER - TY - JOUR A1 - Adelmann, Benedikt A1 - Hürner, Andreas A1 - Schlegel, Tobias A1 - Bauer, Anton A1 - Frey, Lothar A1 - Hellmann, Ralf T1 - Laser Alloying Nickel on 4H-Silicon Carbide Substrate to Generate Ohmic Contacts JF - Journal of Laser Micro/Nanoengineering KW - Ohm-Kontakt KW - Nickellegierung Y1 - 2013 VL - 8 IS - 1 SP - 97 EP - 101 ER - TY - CHAP A1 - Hasenstab, Stefan A1 - Adelmann, Benedikt A1 - Hellmann, Ralf T1 - Laser Cutting of Alumina and Aluminum Nitride with a 500 W Single Mode Fiber Laser T2 - XXVII. microCAD International Scientific Conference KW - Laserschneiden KW - Aluminiumoxide Y1 - 2013 ER - TY - JOUR A1 - Adelmann, Benedikt A1 - Hellmann, Ralf T1 - Process optimization of laser fusion cutting of multilayer stacks of electrical sheets JF - International Journal of Advanced Manufacturing Technology KW - Laserschneiden Y1 - 2013 VL - 68 SP - 2693 EP - 2701 ER - TY - JOUR A1 - Levie, Ron A1 - Stark, Hans-Georg A1 - Lieb, Florian A1 - Sochen, Nir T1 - Adjoint translation, adjoint observable and uncertainty principles JF - Advances in computational mathematics KW - Signalverarbeitung KW - Bildverarbeitung Y1 - 2013 U6 - https://doi.org/10.1007%2Fs10444-013-9336-x VL - 40 IS - 3 SP - 609 EP - 627 ER - TY - JOUR A1 - Heilmann, Eva-Maria A1 - Kowalski, Thomas A1 - Hellmann, Ralf A1 - Teigelkötter, Johannes T1 - Water Jet Guided Laser Cutting of High Temperature Superconductors JF - Journal of Laser Micro/Nanoengineering KW - laser KW - Laserschneiden Y1 - 2013 U6 - https://doi.org/10.2961/jlmn.2013.01.0014 VL - 8 IS - 1 SP - 70 EP - 74 ER - TY - JOUR A1 - Nick, Christoph A1 - Quednau, Sebastian A1 - Sarwar, Reza A1 - Schlaak, Helmut A1 - Thielemann, Christiane T1 - High Aspect Ratio Gold Nanopillars on Microelectrodes for Neural Interfaces JF - Microsystem Technologies Media KW - nanopillars KW - Neuronales Netz KW - Mikroelektrode Y1 - 2013 UR - http://link.springer.com/article/10.1007%2Fs00542-013-1958-x SN - 0946-7076 IS - 20/10-11 SP - 1849 EP - 1857 ER - TY - CHAP A1 - Oster, Stefan A1 - Daus, Andreas A1 - Goldhammer, Michael A1 - Bochtler, Ulrich A1 - Thielemann, Christiane T1 - A Flexible RF Exposure Setup for Long-term Electrophysiological Investigations on Biological Samples in Vitro T2 - Progress In Electromagnetics Research Symposium Abstracts, Stockholm, Schweden KW - Neuronales Netz KW - Array KW - Mikroelektrode Y1 - 2013 ER - TY - JOUR A1 - Stark, Hans-Georg A1 - Lieb, Florian A1 - Lantzberg, Daniel T1 - Variance Based Uncertainty Principles and Minimum Uncertainty Samplings JF - Applied Mathematics Letters KW - Wavelet Y1 - 2013 U6 - https://doi.org/10.1016/j.aml.2012.08.009 VL - 26(2013) IS - 2 SP - 189 EP - 193 ER - TY - JOUR A1 - Rauer, Miriam A1 - Schreck, Timo A1 - Kaloudis, Michael T1 - X-Ray Computed Tomography as Supporting Technology in the Failure Analysis of Press-In Connections for Electronic Assemblies JF - Practical Metallography KW - X-ray KW - Fehleranalyse KW - Computertomografie KW - Elektronische Baugruppe Y1 - 2013 VL - 50(2013) IS - 3 SP - 205 EP - 221 ER - TY - JOUR A1 - Schreck, Timo A1 - Schnorpfeil, Anna A1 - Kaloudis, Michael T1 - Analysing the growth of intermetallic compounds in lead-free solder joints by differential scanning calorimetry measurements JF - Journal of Materials Science KW - intermetallic compounds KW - Differential scanning calorimetry KW - Lötverbindung Y1 - 2013 U6 - https://doi.org/10.1007/s10853-012-7035-5 VL - 48(2013) IS - 6 SP - 2476 EP - 2484 ER - TY - CHAP A1 - Köhler, Sebastian A1 - Schreiner, Brian A1 - Ronalter, Steffen A1 - Doll, Konrad A1 - Brunsmann, Ulrich A1 - Zindler, Klaus T1 - Autonomous Evasive Maneuvers Triggered by Infrastructure-Based Detection of Pedestrian Intentions T2 - IEEE Intelligent Vehicles Symposium (IV' 13), Gold Coast, Australien, 23.-26. Juni KW - Evasive Maneuvers KW - Fahrerassistenzsystem KW - Bildverarbeitung Y1 - 2013 U6 - https://doi.org/10.1109/IVS.2013.6629520 SN - 1931-0587 SP - 519 EP - 526 ER - TY - CHAP A1 - Frieß, Johannes A1 - Ritter, Sylvia A1 - Daus, Andreas A1 - Layer, Paul A1 - Thielemann, Christiane A1 - Heselich, Anja T1 - Electrophysiologic and Molecular Characteristics of Cardiomyocytes after Heavy Ion Irradiation in the frame of the ESA IBER-10 Program T2 - Heavy Ion in Therapie and Space Radiation Symposium (HITSRS2013), 2013, Chiba, Japan KW - Herzmuskelzelle KW - Ionenbestrahlung KW - Schweres Ion Y1 - 2013 ER -