TY - CHAP A1 - Hüning, Felix T1 - Power semiconductors : key components for HEV/EV T2 - FISITA 2014 World Automotive Congress : 2 - 6 June, Maastricht, the Netherlands International Federation of Automotive Engineering Societies Y1 - 2014 N1 - Datenformat: PDF PB - KIVI CY - [s.l.] ER - TY - JOUR A1 - Klinge, Uwe A1 - Otto, Jens A1 - Mühl, Thomas T1 - High Structural Stability of Textile Implants Prevents Pore Collapse and Preserves Effective Porosity at Strain JF - BioMed Research International Y1 - 2015 U6 - https://doi.org/10.1155/2015/953209 SN - 2314-6133 (Print) SN - 2314-6141 (Online) N1 - Article ID: 953209 VL - 2015 ER - TY - JOUR A1 - Fredebeul-Krein, Markus A1 - Steingröver, Markus T1 - Wholesale broadband access to IPTV in an NGA environment : how to deal with it from a regulatory perspective? JF - Telecommunications Policy Y1 - 2014 U6 - https://doi.org/doi:10.1016/j.telpol.2013.04.002 SN - 0308-5961 (Print) SN - 1879-3258 (Online) VL - 38 IS - 3 SP - 264 EP - 277 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Moreno, Lia A1 - Dosev, D. A1 - Bratov, A. A1 - Dominguez, C. A1 - Schöning, Michael Josef A1 - Kloock, Joachim P. T1 - Effect of electrical properties of the surrounding medium on the response of an interdigitated electrode array with chalcogenide glass film T2 - XX Eurosensors : 20th anniversary ; Göteborg, Sweden, 17 - 20 September 2006 ; [proceedings]. - Vol. 1 Y1 - 2006 SN - 978-91-631-9280-7 N1 - Paper number: T1A-P22 SP - 384 EP - 385 CY - Göteborg ER - TY - JOUR A1 - Hafner, David A1 - Demetz, Oliver A1 - Weickert, Joachim A1 - Reißel, Martin T1 - Mathematical Foundations and Generalisations of the Census Transform for Robust Optic Flow Computation JF - Journal of Mathematical Imaging and Vision Y1 - 2014 U6 - https://doi.org/10.1007/s10851-014-0529-9 SN - 1573-7683 (Online) N1 - Springer Online First (ohne Seitenang. und Heftzuteilung) PB - Springer CY - New York ER - TY - CHAP A1 - Schürmann, Volker A1 - Leidinger, R. A1 - Wollert, Jörg T1 - Simplified rapid-prototyping with automation technology T2 - Automobiles and sustainable mobility : FISITA 2010 World Automotive Congress, 30 May - 4 June, Budapest, Hungary ; proceedings Y1 - 2010 SN - 978-963-9058-29-3 SP - F2010C093 ER - TY - CHAP A1 - Schürmann, Volker A1 - Mann, Thorsten A1 - Buda, Aurel A1 - Wollert, Jörg T1 - Integrating bluetooth localization into existing TCP/IP networks T2 - IEEE International Workshop on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, 2009 : IDAACS 2009 ; Rende, Cosenza, Italy, 21 - 23 Sept. 2009 Y1 - 2009 SN - 978-1-4244-4882-1 ; ISBN: 978-1-4244-4901-9 U6 - https://doi.org/10.1109/IDAACS.2009.5342903 SP - 621 EP - 624 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Schürmann, Volker A1 - Keller, Alex A1 - Wollert, Jörg T1 - Internet based middleware approach for building services T2 - Proceedings / IMETI 2009, the 2nd International Multi-Conference on Engineering and Technological Innovation : July 10 - 13, 2009 Orlando, Florida, USA ; vol. 1 Y1 - 2009 SN - 1-934272-68-X ; 978-1-934272-68-8 SP - 30 EP - 34 PB - IIIS CY - Winter Garden, Fla. ER - TY - CHAP A1 - Schürmann, Volker A1 - Buda, Aurel A1 - Wollert, Jörg T1 - XML-based Middleware approach for industrial wireless communication systems T2 - IEEE International Conference on Emerging Technologies and Factory Automation, 2008 : ETFA 2008 ; 15 - 18 Sept., 2008, Hamburg, Germany Y1 - 2008 SN - 978-1-4244-1505-2 U6 - https://doi.org/10.1109/ETFA.2008.4638463 SP - 632 EP - 639 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Vedral, Andreas A1 - Kruse, Thomas A1 - Wollert, Jörg T1 - Development and performance evaluation of an antenna diversity module for industrial communication based on IEEE 802.15.4 T2 - 12th IEEE International Conference on Emerging Technologies and Factory Automation : ETFA 2007 : proceedings : 25-28 Sept. 2007, Patras, Greece Y1 - 2007 SN - 1424408261 ; 9781424408269 U6 - https://doi.org/10.1109/EFTA.2007.4416769 SP - 177 EP - 186 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Schürmann, Volker A1 - Buda, Aurel A1 - Jonker, Stefan A1 - Palmhof, Norman A1 - Wollert, Jörg T1 - Wireless in future automotive applications T2 - Mobile and wireless communications network layer and circuit level design / ed. by Salma Ait Fares ... Y1 - 2010 SN - 978-953-307-042-1 SP - 71 EP - 92 PB - Intech CY - London ER - TY - CHAP A1 - Vedral, Andreas A1 - Wollert, Jörg A1 - Buda, A. A1 - Altrock, R. T1 - The capability of bluetooth for real-time transmission in automation T2 - Proceedings of the IASTED International Conference on Networks and Communication Systems 2006 : March 29 - 31, 2006, Chiang Mai, Thailand Y1 - 2006 SP - 168 EP - 175 PB - Acta Pr. CY - Anaheim, Calif. ER - TY - CHAP A1 - Vedral, Andreas A1 - Wollert, Jörg T1 - Service based Bluetooth dual-hop networks using CORBA T2 - Proceedings of the IASTED International Conference on Artificial Intelligence and Applications : as part of the 23rd IASTED International Multi-Conference on Applied Informatics ; February 14 - 16, 2005, Innsbruck, Austria Y1 - 2005 SN - 0-88986-457-8 SP - 724 EP - 728 PB - Acta Pr. CY - Anaheim, Calif. ER - TY - CHAP A1 - Wollert, Jörg A1 - Plessmann, K. W. T1 - Controlling processes by operating-point based hybride observers T2 - EUFIT '93 : September 7 - 10, 1993, Eurogress Aachen, Germany, proceedings / First European Congress on Fuzzy and Intelligent Technologies Y1 - 1993 SN - 3-86073-176-9 SP - 1151 EP - 1155 PB - Verl. d. Augustinus Buchh. CY - Aachen ER - TY - CHAP A1 - Buda, Aurel A1 - Schürmann, Volker A1 - Wollert, Jörg T1 - Wireless technologies in factory automation T2 - Factory automation / ed. by Javier Silvestre-Blanes Y1 - 2010 SN - 978-953-7619-42-8 SP - 29 EP - 50 PB - Intech CY - London ER - TY - JOUR A1 - Schreiber, Marc A1 - Barkschat, Kai A1 - Kraft, Bodo A1 - Zündorf, Albert T1 - Quick Pad Tagger : An Efficient Graphical User Interface for Building Annotated Corpora with Multiple Annotation Layers JF - Computer Science & Information Technology (CS & IT) Y1 - 2015 SN - 978-1-921987-32-8 U6 - https://doi.org/10.5121/csit.2015.50413 SN - 2231 - 5403 VL - 5 IS - 4 SP - 131 EP - 143 PB - Academy & Industry Research Collaboration Center (AIRCC) ER - TY - CHAP A1 - Kronhardt, Valentina A1 - Alexopoulos, Spiros A1 - Reißel, Martin A1 - Latzke, Markus A1 - Rendon, C. A1 - Sattler, Johannes Christoph A1 - Herrmann, Ulf T1 - Simulation of operational management for the Solar Thermal Test and Demonstration Power Plant Jülich using optimized control strategies of the storage system T2 - Energy procedia Y1 - 2015 SN - 1876-6102 SP - 1 EP - 6 ER - TY - CHAP A1 - Buschkühle, Peter A1 - Schürmann, Volker A1 - Wollert, Jörg T1 - Abstraction of wireless communication by a convergence middleware in conjunction with a XML-configuration T2 - Information technology and electrical engineering : devices and systems, materials and technologies for the future ; Ilmenau 07 - 10 September 2009 ; 54. IWK Internationales Wissenschaftliches Kolloquium Y1 - 2009 SN - 978-3-938843-44-4 SP - 95 EP - 96 PB - Techn. Univ. CY - Ilmenau ER - TY - JOUR A1 - Seifarth, Volker A1 - Goßmann, Matthias A1 - Grosse, J. O. A1 - Becker, C. A1 - Heschel, I. A1 - Artmann, Gerhard A1 - Temiz Artmann, Aysegül T1 - Development of a Bioreactor to Culture Tissue Engineered Ureters Based on the Application of Tubular OPTIMAIX 3D Scaffolds JF - Urologia Internationalis Y1 - 2015 U6 - https://doi.org/10.1159/000368419 SN - 0042-1138 VL - 2015 IS - 95 SP - 106 EP - 113 PB - Karger CY - Basel ER - TY - CHAP A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - Silicon-based chemical and biological field-effect sensors T2 - Encyclopedia of Sensors. Vol. 9 S - Sk Y1 - 2006 SN - 1-58883-065-9 SP - 463 EP - 534 PB - ASP, American Scientific Publ. CY - Stevenson Ranch, Calif. ER - TY - CHAP A1 - Bonney, Gregor A1 - Höfken, Hans-Wilhelm A1 - Paffen, Benedikt A1 - Schuba, Marko T1 - ICS/SCADA Security - Analysis of a Beckhoff CX5020 PLC T2 - 1st International Conference on Information Systems Security and Privacy : ICISSP 2015 Y1 - 2015 SP - 1 EP - 6 ER - TY - JOUR A1 - Raue, Markus A1 - Wambach, M. A1 - Glöggler, S. A1 - Grefen, Dana A1 - Kaufmann, R. A1 - Abetz, C. A1 - Georgopanos, P. A1 - Handge, U. A. A1 - Mang, Thomas A1 - Blümich, B. A1 - Abetz, V. T1 - Investigation of historical hard rubber ornaments of Charles Goodyear JF - Macromolecular chemistry and physics Y1 - 2014 SN - 1022-1352 VL - Vol. 215 IS - No. 3 SP - 245 EP - 254 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Heuermann, Holger A1 - Finger, Torsten T1 - 2.45 GHz Plasma Powered Spark Plug by Thermal and EM-Optimization Y1 - 2014 N1 - Ansys High Frequency Simulation Conference - AHFSC 2014, Munich; 02/2014 ER - TY - CHAP A1 - Heuermann, Holger A1 - Finger, Torsten ED - Günther, Michael T1 - Microwave Spark Plug for Very High-Pressure Conditions T2 - Ignition systems for gasoline engines Y1 - 2014 SP - 269 EP - 282 PB - DCM Druck CY - Meckenheim ER - TY - CHAP A1 - Schopp, Christoph A1 - Heuermann, Holger A1 - Holtrup, S. T1 - Investigation on efficacy optimization of RF-driven automotive D-lamps T2 - 44th European Microwave Conference (EuMC),2014, Rome Y1 - 2014 U6 - https://doi.org/10.1109/EuMC.2014.6986645 SP - 1154 EP - 1157 ER - TY - CHAP A1 - Schopp, Christoph A1 - Heuermann, Holger T1 - Electrodeless low pressure lamp with bi-static matching at 2.45 GHz T2 - 2013 European Microwave Conference (EuMC) , Nuremberg Y1 - 2013 SN - 978-1-4799-0264-4 SP - 881 EP - 884 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Ellerweg, Roland A1 - Ritz, Thomas ED - Roth, Jörg T1 - Tool supported requirements analysis for the user centered development of mobile enterprise software T2 - Proceeding of Wireless Applications and Computing 2008 and Telecommunications, Networks and Systems 2008 : MCCSIS '08 ; IADIS Multi Conference on Computer Science and Information Systems ; 22 - 24 July 2008, Amsterdam, The Netherlands N2 - A user centered development method has proved satisfactory for the development of mobile enterprise software. To make use of this method, detailed information about the user and the place where the user interacts with his mobile device is required. This article describes how both can be modeled by a stereotypical and conceptual extended UML extension. Finally, a software tool is presented that supports the developed UML extension. Y1 - 2008 SN - 978-972-8924-62-1 SP - 160 EP - 162 PB - IADIS Press CY - [Lisboa] ER - TY - CHAP A1 - Fuchs, Britta A1 - Ritz, Thomas A1 - Halbach, Bastian A1 - Hartl, Florian ED - Marca, David A. T1 - Blended shopping : interactivity and individualization T2 - Proceedings of the International Conference on e-Business : Seville, Spain, 18 - 21 July 2011 ; [... integrated in the ICETE (International Conference on e-Business and Telecommunications) joint conference] Y1 - 2011 SN - 978-989-8425-70-6 SP - 47 EP - 52 PB - SciTePress CY - [Lissabon] ER - TY - CHAP A1 - Damm, Sebastian A1 - Ritz, Thomas A1 - Strauch, Jakob T1 - Adaption of archetype patterns for mobile cloud-based business apps T2 - 2011 IEEE International Conference on Pervasive Computing and Communications workshops (PerCom workshops 2011) : Seattle, Washington, USA, 21 - 25 March 2011 Y1 - 2011 SN - 978-1-61284-938-6 (Print) SN - 978-1-61284-936-2 (E-Book) U6 - https://doi.org/10.1109/PERCOMW.2011.5766849 SP - 100 EP - 105 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - CHAP A1 - Fuchs, Britta A1 - Ritz, Thomas A1 - Strauch, Jakob ED - Obaidat, Mohammad S. T1 - Usability of mobile applications : dissemination of usability engineering in small and medium enterprises T2 - Proceedings of the International Conference on Data Communication Networking, e-Business and Optical Communication Systems : Rome, Italy, 24 - 27 July, 2012 ; [integrated in the ICETE (International Conference on e-Business and Telecommunications)] Y1 - 2012 SN - 978-989-8565-23-5 N1 - Nebentitel: DCNET; ICE-B; OPTICS SP - 272 EP - 277 PB - SciTePress CY - [Lissabon] ER - TY - CHAP A1 - Ritz, Thomas A1 - Izquierdo Tello, César A1 - Damm, Sebastian T1 - Connecting a pedelec to the cloud as basis for gamification in multi modal mobility planning T2 - MobileCloud 2014 : 2nd IEEE International Conference on Mobile Cloud Computing, Services, and Engineering Oxford, United Kingdom 7-10 April 2014 Y1 - 2014 SN - 978-1-4799-2504-9 U6 - https://doi.org/10.1109/MobileCloud.2014.25 SP - 101 EP - 108 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - CHAP A1 - Gebhardt, Andreas A1 - Ritz, Thomas A1 - Siekmann, Kirsten A1 - Wallenborn, Ramona ED - Demmer, Axel T1 - Additive manufacturing businesses in the process chain of individualized mass products T2 - DDMC 2014 : Proceedings of the Fraunhofer Direct Digital Manufacturing Conference Y1 - 2014 SN - 978-3-8396-9128-1 (E-Book) PB - Fraunhofer CY - Stuttgart ER - TY - JOUR A1 - Fateri, Miranda A1 - Gebhardt, Andreas T1 - Process Parameters Development of Selective Laser Melting of Lunar Regolith for On-Site Manufacturing Applications JF - International Journal of Applied Ceramic Technology Y1 - 2015 SN - 1744-7402 U6 - https://doi.org/10.1111/ijac.12326 VL - 12 IS - 1 SP - 46 EP - 52 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Fateri, Miranda A1 - Gebhardt, Andreas T1 - Selective Laser Melting of Soda-Lime Glass Powder JF - International Journal of Applied Ceramic Technology Y1 - 2015 U6 - https://doi.org/10.1111/ijac.12338 SN - 1744-7402 VL - 12 IS - 1 SP - 53 EP - 61 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Feichtinger, Linda M. A1 - Eilmann, Britta A1 - Buchmann, Nina A1 - Rigling, Andreas T1 - Trait-specific responses of Scots pine to irrigation on a short vs long time scale JF - Tree Physiology Y1 - 2015 U6 - https://doi.org/10.1093/treephys/tpu114 SN - 1758-4469 (Online) SN - 0829-318X (Print) N1 - Ab 12 Monaten nach Veröffentlichung kostenfrei zugänglich. VL - 35 IS - 00 SP - 1 EP - 12 PB - Heron CY - Victoria, BC ER - TY - CHAP A1 - Alhwarin, Faraj A1 - Ferrein, Alexander A1 - Scholl, Ingrid T1 - IR stereo kinect: improving depth images by combining structured light with IR stereo T2 - PRICAI 2014: Trends in artificial intelligence : 13th Pacific Rim International Conference on Artificial Intelligence : Gold Coast, QLD, Australia, December 1-5, 2014 : proceedings. (Lecture notes in computer science ; vol. 8862) N2 - RGB-D sensors such as the Microsoft Kinect or the Asus Xtion are inexpensive 3D sensors. A depth image is computed by calculating the distortion of a known infrared light (IR) pattern which is projected into the scene. While these sensors are great devices they have some limitations. The distance they can measure is limited and they suffer from reflection problems on transparent, shiny, or very matte and absorbing objects. If more than one RGB-D camera is used the IR patterns interfere with each other. This results in a massive loss of depth information. In this paper, we present a simple and powerful method to overcome these problems. We propose a stereo RGB-D camera system which uses the pros of RGB-D cameras and combine them with the pros of stereo camera systems. The idea is to utilize the IR images of each two sensors as a stereo pair to generate a depth map. The IR patterns emitted by IR projectors are exploited here to enhance the dense stereo matching even if the observed objects or surfaces are texture-less or transparent. The resulting disparity map is then fused with the depth map offered by the RGB-D sensor to fill the regions and the holes that appear because of interference, or due to transparent or reflective objects. Our results show that the density of depth information is increased especially for transparent, shiny or matte objects. Y1 - 2014 SN - 978-3-319-13559-5 (Print) ; 978-3-319-13560-1 (E-Book) U6 - https://doi.org/10.1007/978-3-319-13560-1_33 SP - 409 EP - 421 PB - Springer CY - München ER - TY - CHAP A1 - Neumann, Tobias A1 - Ferrein, Alexander A1 - Kallweit, Stephan A1 - Scholl, Ingrid T1 - Towards a mobile mapping robot for underground mines T2 - 7th Conference of Robotics and Mechatronics : RobMech 2014 : 27th and 28th Nov. 2014, Cape Town Y1 - 2014 SP - 1 EP - 6 ER - TY - JOUR A1 - Mathiak, Gerhard A1 - Willnecker, Rainer A1 - Plescher, Engelbert T1 - Vibrational effects on diffusion experiments JF - Microgravity science and technology : international journal for microgravity research and applications Y1 - 2005 SN - 0938-0108 VL - Vol. 15 IS - No. 1 SP - 295 EP - 300 ER - TY - JOUR A1 - Mathiak, Gerhard A1 - Plescher, Engelbert A1 - Willnecker, Rainer T1 - Liquid metal diffusion experiments in microgravity - Vibrational effects JF - Measurement science and technology Y1 - 2005 U6 - https://doi.org/10.1088/0957-0233/16/2/003 SN - 0957-0233 VL - Vol. 16 IS - No. 2 SP - 336 ER - TY - CHAP A1 - Plescher, Engelbert A1 - Mathiak, Gerhard A1 - Willnecker, Rainer T1 - Technical aspects of liquid diffusion model experiments T2 - 55th International Astronautical Congress : October 4 - 8, 2004, Vancouver, Canada / International Astronautical Federation. Bd. 8. IAC-04-J.5.04 Y1 - 2005 SP - 5019 EP - 5025 PB - International Astronautical Federation CY - Paris ER - TY - BOOK A1 - Benkö, Marietta A1 - Plescher, Engelbert T1 - Space law: reconsidering the definition/delimitation question and the passage of spacecraft through foreign airspace. (Essential air and space law ; 12) Y1 - 2013 SN - 9789462360761 ; 9462360766 ; 9789460948176 PB - Eleven International Publishing CY - The Hague ER - TY - CHAP A1 - Beging, Stefan A1 - Poghossian, Arshak A1 - Mlynek, D. A1 - Hataihimakul, S. A1 - Pedraza, A. A1 - Dhawan, S. A1 - Laube, N. A1 - Kleinen, Lisa A1 - Baldsiefen, Gerhard A1 - Busch, Heinrich von A1 - Schöning, Michael Josef T1 - Ion-selective sensors for the determination of the risk of urinary stone formation T2 - Micro- and Nanosystems in biochemical diagnosis : Principles and applications Y1 - 2010 SP - 74 EP - 80 CY - Warsaw ER - TY - CHAP A1 - Kloock, Joachim P. A1 - Schubert, J. A1 - Ermelenko, Y. A1 - Vlasov, Y. G. A1 - Bratov, A. A1 - Schöning, Michael Josef T1 - Thin-film sensors with chalcogenide glass materials – a general survey T2 - Biochemical sensing utilisation of micro- and nanotechnologies : Warsaw, [23rd - 26th] November 2005 / ed. by M. Mascini ... Y1 - 2006 SP - 92 EP - 97 CY - Warsaw ER - TY - CHAP A1 - Näther, Niko A1 - Poghossian, Arshak A1 - Platen, J. A1 - Yoshinobu, T. A1 - Koudelka-Hep, M. A1 - Schöning, Michael Josef T1 - Multi-parameter sensing of both physical and (bio-)chemical quantities using the same transducer principle T2 - Biochemical sensing utilisation of micro- and nanotechnologies : Warsaw, [23rd - 26th] November 2005 / ed. by M. Mascini ... Y1 - 2006 SP - 172 EP - 181 CY - Warsaw ER - TY - CHAP A1 - Yoshinobu, T. A1 - Schöning, Michael Josef A1 - Finger, F. A1 - Moritz, W. A1 - Iwasaki, H. T1 - Thin-film a-Si LAPS : Preparation and pH sensitivity T2 - Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimarães, Portugal, September 21 - 24, 2003 Y1 - 2003 SP - 88 EP - 89 ER - TY - CHAP A1 - Ermelenko, Y. A1 - Yoshinobu, T. A1 - Mourzina, Y. A1 - Schöning, Michael Josef A1 - Vlasov, Y. A1 - Iwasaki, H. T1 - A multisensor based on laser scanned silicon transducer (LSST): development and properties T2 - Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimarães, Portugal, September 21 - 24, 2003 Y1 - 2003 SP - 72 EP - 73 ER - TY - CHAP A1 - Moritz, Werner A1 - Yoshinobu, Tatsuo A1 - Finger, Friedhelm A1 - Krause, Steffi A1 - Schöning, Michael Josef T1 - Amorphous silicon as semiconductor material for high resolution LAPS T2 - Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimarães, Portugal, September 21 - 24, 2003 Y1 - 2003 SP - 48 EP - 49 ER - TY - CHAP A1 - Schöning, Michael Josef A1 - Abouzar, Maryam H. A1 - Wagner, Torsten A1 - Näther, Niko A1 - Rolka, David A1 - Yoshinobu, Tatsuo A1 - Kloock, Joachim P. A1 - Turek, Monika A1 - Ingebrandt, Sven A1 - Poghossian, Arshak T1 - A semiconductor-based field-effect platform for (bio-)chemical and physical sensors: From capacitive EIS sensors and LAPS over ISFETs to nano-scale devices T2 - MRS Proceedings Y1 - 2006 U6 - https://doi.org/10.1557/PROC-0952-F08-02 N1 - Vol. 952 - Symposium F - Integrated Nanosensors SP - 1 EP - 9 ER - TY - JOUR A1 - Wagner, Torsten A1 - Miyamoto, K. A1 - Werner, Frederik A1 - Schöning, Michael Josef A1 - Yoshinobu, T. T1 - Utilising Digital Micro-Mirror Device (DMD) as Scanning Light Source for Light-Addressable Potentiometric Sensors (LAPS) Y1 - 2011 U6 - https://doi.org/10.1166/sl.2011.1620 VL - 9 IS - 2 SP - 812 EP - 815 PB - American Scientific Publishers CY - Stevenson Ranch, Calif. ER - TY - CHAP A1 - Fateri, Miranda A1 - Gebhardt, Andreas T1 - Jewelry fabrication via selective laser melting of glass T2 - ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis Volume 1: Applied Mechanics; Automotive Systems; Biomedical Biotechnology Engineering; Computational Mechanics; Design; Digital Manufacturing; Education; Marine and Aerospace Applications N2 - Selective Laser Melting (SLM) is one of the Additive Manufacturing (AM) technologies applicable for producing complex geometries which are typically expensive or difficult to fabricate using conventional methods. This process has been extensively investigated experimentally for various metals and the fabrication process parameters have been established for different applications; however, fabricating 3D glass objects using SLM technology has remained a challenge so far although it could have many applications. This paper presents a summery on various experimental evaluations of a material database incorporating the build parameters of glass powder using the SLM process for jewelry applications. Y1 - 2014 SN - 978-0-7918-4583-7 U6 - https://doi.org/10.1115/ESDA2014-20380 SP - V001T06A005 ER - TY - JOUR A1 - Schöning, Michael Josef A1 - Poghossian, Arshak T1 - BioFEDs (field-effect devices) : State-of-the-art and new directions JF - Electroanalysis Y1 - 2006 U6 - https://doi.org/10.1002/elan.200603609 SN - 1521-4109 VL - 18 IS - 19-20 SP - 1893 EP - 1900 ER - TY - CHAP A1 - Takenaga, Shoko A1 - Werner, Frederik A1 - Sawada, Kazuaki A1 - Schöning, Michael Josef T1 - Comparison of label-free ACh image sensors based on CCD and LAPS Y1 - 2012 SN - 978-3-9813484-2-2 U6 - https://doi.org/10.5162/IMCS2012/4.2.6 SP - 356 EP - 359 ER - TY - CHAP A1 - Bohrn, Ulrich A1 - Stütz, Evamaria A1 - Fleischer, Maximilian A1 - Schöning, Michael Josef A1 - Wagner, Patrick T1 - Living cell-based gas sensor system for the detection of acetone in air Y1 - 2012 SN - 978-3-9813484-2-2 U6 - https://doi.org/10.5162/IMCS2012/3.2.3 SP - 269 EP - 272 ER - TY - CHAP A1 - Bohrn, Ulrich A1 - Mucha, Andreas A1 - Werner, Frederik A1 - Stütz, Evamaria A1 - Bäcker, Matthias A1 - Krumbe, Christoph A1 - Schienle, Meinrad A1 - Fleischer, Maximilian A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - Detection of toxic chromium species in water using cellbased sensor systems Y1 - 2012 SN - 978-3-9813484-2-2 U6 - https://doi.org/10.5162/IMCS2012/P2.1.14 SP - 1364 EP - 1367 ER - TY - PAT A1 - Bragard, Michael A1 - Budde, W. O. A1 - Hente, D. A1 - Jacobs, J. H. A. M. A1 - Waffenschmidt, E. T1 - Lighting system : [patent of invention] T1 - Beleuchtungssystem : [Patentschrift] Y1 - 2008 N1 - Außerdem veröffentlicht als: TW200817630 (A), TWI402458 (B), RU2009106047 (A), RU2440636 (C2), KR20090042806 (A), KR101423467 (B1), JP2009545103 (A), JP5265540 (B2), CN101490772 (A) und CN101490772 (B) PB - WIPO / United States Patent and Trademark Office CY - Geneva / Alexandria, VA ER - TY - CHAP A1 - Weil, M. A1 - Poghossian, Arshak A1 - Schöning, Michael Josef A1 - Cherstvy, A. T1 - Electrical monitoring of layer-by-layer adsorption of oppositely charged macromolecules by means of capacitive field-effect devices Y1 - 2012 SN - 978-3-9813484-2-2 U6 - https://doi.org/10.5162/IMCS2012/P2.5.2 SP - 1575 EP - 1578 ER - TY - CHAP A1 - Tran, Thanh Ngoc A1 - Staat, Manfred T1 - Uncertainty multimode failure and shakedown analysis of shells T2 - Direct methods for limit and shakedown analysis of structures / eds. Paolo Fuschi ... N2 - This paper presents a numerical procedure for reliability analysis of thin plates and shells with respect to plastic collapse or to inadaptation. The procedure involves a deterministic shakedown analysis for each probabilistic iteration, which is based on the upper bound approach and the use of the exact Ilyushin yield surface. Probabilistic shakedown analysis deals with uncertainties originated from the loads, material strength and thickness of the shell. Based on a direct definition of the limit state function, the calculation of the failure probability may be efficiently solved by using the First and Second Order Reliability Methods (FORM and SORM). The problem of reliability of structural systems (series systems) is handled by the application of a special technique which permits to find all the design points corresponding to all the failure modes. Studies show, in this case, that it improves considerably the FORM and SORM results. KW - Limit analysis KW - Shakedown analysis KW - Reliability analysis KW - Multimode failure KW - Non-linear optimization Y1 - 2015 SN - 978-3-319-12927-3 (print) ; 978-3-319-12928-0 (online) U6 - https://doi.org/10.1007/978-3-319-12928-0_14 SP - 279 EP - 298 PB - Springer CY - Cham ER - TY - JOUR A1 - Thust, Marion A1 - Schöning, Michael Josef A1 - Frohnhoff, S. A1 - Arens-Fischer, R. A1 - Kordos, P. A1 - Lüth, H. T1 - Porous silicon as a substrate material for potentiometric biosensors JF - Measurement Science and Technology Y1 - 1996 U6 - https://doi.org/10.1088/0957-0233/7/1/003 VL - 7 IS - 1 SP - 26 EP - 29 ER - TY - JOUR A1 - Schütz, S. A1 - Weißbecker, B. A1 - Hummel, Hans E. A1 - Schöning, Michael Josef A1 - Riemer, A. A1 - Kordos, P. A1 - Lüth, H. T1 - Field effect transistor-insect antenna junction JF - Naturwissenschaften Y1 - 1997 SN - 1432-1904 VL - 84 SP - 86 EP - 88 ER - TY - CHAP A1 - Wagner, Torsten A1 - Yoshinobu, T. A1 - Schöning, Michael Josef T1 - Light-addressable potentiometric sensor as semiconductor-based sensor platform for (bio-) chemical sensing T2 - Armenian Journal of Physics Y1 - 2008 SN - 1829-1171 SP - 99 EP - 103 ER - TY - CHAP A1 - Kloock, Joachim P. A1 - Schöning, Michael Josef T1 - Heavy metal detection with semiconductor devices based on PLD-prepared chalcogenide glass thin films T2 - Armenian Journal of Physics Y1 - 2007 SN - 1829-1171 SP - 95 EP - 98 ER - TY - PAT A1 - Nötzold, K. A1 - Bragard, Michael A1 - Fink, K. A1 - Griessel, R. A1 - Wegener, R. T1 - Cascaded H-bridge converter with transformer based cell power balancing in each voltage level : [Patentschrift] Y1 - 2014 N1 - Titel des US-Patents: Bypassed cascaded cell converter : [patent of invention]. - Außerdem veröffentlicht als CN103997231 (A) PB - Europäisches Patentamt / United States Patent and Trademark Office [u.a.] CY - Den Haag / Alexandria, VA ER - TY - JOUR A1 - Guo, Yuanyuan A1 - Seki, Kosuke A1 - Miyamoto, Ko-ichiro A1 - Wagner, Torsten A1 - Schöning, Michael Josef A1 - Yoshinobu, Tatsuo T1 - Device simulation of the light-addressable potentiometric sensor with a novel photoexcitation method for a higher spatial resolution JF - Procedia Engineering N2 - A novel photoexcitation method for the light-addressable potentiometric sensor (LAPS) realized a higher spatial resolution of chemical imaging. In this method, a modulated light probe, which generates the alternating photocurrent signal, is surrounded by a ring of constant light, which suppresses the lateral diffusion of photocarriers by enhancing recombination. A device simulation verified that a higher spatial resolution could be obtained by adjusting the gap between the modulated and constant light. It was also found that a higher intensity and a longer wavelength of constant light was more effective. However, there exists a tradeoff between the spatial resolution and the amplitude of the photocurrent, and thus, the signal-to-noise ratio. A tilted incidence of constant light was applied, which could achieve even higher resolution with a smaller loss of photocurrent. KW - Light-addressable Potentiometric Sensor KW - novel photoexcitation method KW - tilted constant illumination KW - spatial resolution Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.369 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 456 EP - 459 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Schusser, Sebastian A1 - Bäcker, Matthias A1 - Krischer, M. A1 - Wenzel, L. A1 - Leinhos, Marcel A1 - Poghossian, Arshak A1 - Biselli, Manfred A1 - Wagner, P. A1 - Schöning, Michael Josef T1 - Enzymatically catalyzed degradation of biodegradable polymers investigated by means of a semiconductor-based field-effect sensor JF - Procedia Engineering N2 - A semiconductor field-effect device has been used for an enzymatically catalyzed degradation of biopolymers for the first time. This novel technique is capable to monitor the degradation process of multiple samples in situ and in real-time. As model system, the degradation of the biopolymer poly(D, L-lactic acid) has been monitored in the degradation medium containing the enzyme lipase from Rhizomucor miehei. The obtained results demonstrate the potential of capacitive field-effect sensors for degradation studies of biodegradable polymers. KW - Field-effect sensor KW - enzymatic (bio)degradation KW - poly(d, l-lactic acid) KW - in-situ monitoring KW - impedance spectroscopy Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.689 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 1314 EP - 1317 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Huck, Christina A1 - Poghossian, Arshak A1 - Bäcker, Matthias A1 - Reisert, Steffen A1 - Schubert, J. A1 - Zander, W. A1 - Begoyan, Vardges K. A1 - Buniatyan, V. V. A1 - Schöning, Michael Josef T1 - Chemical sensors based on a high-k perovskite oxide of barium strontium titanate JF - Procedia Engineering N2 - High-k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi-functional transducer material for the development of (bio-)chemical sensors for liquids. In this work, BST films have been applied as a sensitive transducer material for a label-free detection of adsorbed charged macromolecules (positively charged polyelectrolytes) and concentration of hydrogen peroxide vapor as well as protection insulator layer for a contactless electrolyte-conductivity sensor. The experimental results of characterization of individual sensors are presented. Special emphasis is devoted towards the development of a capacitively-coupled contactless electrolyte-conductivity sensor. KW - barium strontium titanate KW - high-k material KW - contactless conductivity sensor KW - multi-functional material KW - hydrogen peroxide Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.258 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 28 EP - 31 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Bronder, Thomas A1 - Wu, Chunsheng A1 - Poghossian, Arshak A1 - Werner, Frederik A1 - Keusgen, M. A1 - Schöning, Michael Josef T1 - Label-free detection of DNA hybridization with light-addressable potentiometric sensors: comparison of various DNA-immobilization strategies JF - Procedia Engineering N2 - Light-addressable potentiometric sensors (LAPS) consisting of a p-Si-SiO2 and p-Si-SiO2-Au structure, respectively, have been tested for a label-free electrical detection of DNA (deoxyribonucleic acid) hybridization. Three different strategies for immobilizing single-stranded probe DNA (ssDNA) molecules on a LAPS surface have been studied and compared: (a) immobilization of thiol-modified ssDNA on the patterned Au surface via gold-thiol bond, (b) covalent immobilization of amino-modified ssDNA onto the SiO2 surface functionalized with 3-aminopropyltriethoxysilane and (c) layer-by-layer adsorption of negatively charged ssDNA on a positively charged weak polyelectrolyte layer of poly(allylamine hydrochloride). KW - LAPS KW - lable-free detection KW - DNA hybridization KW - field-effect sensor Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.647 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 755 EP - 758 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Miyamoto, K. A1 - Seki, K. A1 - Wagner, Torsten A1 - Schöning, Michael Josef A1 - Yoshinobu, T. T1 - Enhancement of the spatial resolution of the chemical imaging sensor by a hybrid fiber-optic illumination JF - Procedia Engineering N2 - The chemical imaging sensor, which is based on the principle of the light-addressable potentiometric sensor (LAPS), is a powerful tool to visualize the spatial distribution of chemical species on the sensor surface. The spatial resolution of this sensor depends on the diffusion of photocarriers excited by a modulated light. In this study, a novel hybrid fiber-optic illumination was developed to enhance the spatial resolution. It consists of a modulated light probe to generate a photocurrent signal and a ring of constant light, which suppresses the lateral diffusion of minority carriers excited by the modulated light. It is demonstrated that the spatial resolution was improved from 92 μm to 68 μm. Y1 - 2014 U6 - https://doi.org/10.1016/j.proeng.2014.11.563 SN - 1877-7058 N1 - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014> VL - 87 SP - 612 EP - 615 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Kern, Alexander A1 - Braun, Christian T1 - Risk management according to IEC 62305-2 edition 2: 2010–12 assessment of structures with a risk of explosion T2 - 2014 International Conference on Lightning Protection (ICLP), Shanghai, China N2 - Risk management for structures with a risk of explosion should be considered very carefully when performing a risk analysis according to IEC 62305-2. In contrast to the 2006 edition of the standard, the 2010 edition describes the topic “Structures with a risk of explosion” in more detail. Moreover, in Germany separate procedures and parameters are defined for the risk analysis of structures with a risk of explosion (Supplement 3 of the German DIN EN 62305-2 standard). This paper describes the contents and the relevant calculations of this Supplement 3, together with a numerical example. Y1 - 2014 SP - 1237 EP - 1242 ER - TY - CHAP A1 - Rousseau, Alain A1 - Kern, Alexander T1 - How to deal with environmental risk in IEC 62305-2 T2 - 2014 International Conference on Lightning Protection (ICLP), Shanghai, China N2 - The 2nd edition of the lightning risk management standard (IEC 62305-2) considers structures, which may endanger environment. In these cases, the loss is not limited to the structure itself, which is valid for usual structures. In the past (Edition 1) this danger was simply taken into account by a special hazard factor, multiplying the existing risk for the structure with a number. Now, in the edition 2, we add to the risk for the structure itself a “second risk” due to the losses outside the structure. The losses outside can be treated independently from what occurs inside. This is a major advantage to analyze the risk for sensitive structures, like chemical plants, nuclear plants, or structures containing explosives, etc. In this paper, the existing procedure given by the European version EN 62305-2 Ed.2 is further developed and applied to a few structures. Y1 - 2014 SP - 521 EP - 527 ER - TY - THES A1 - Bragard, Michael T1 - The integrated emitter turn-off thyristor : an innovative MOS-gated high-power device. - (Aachener Beiträge des ISEA ; 62) N2 - This thesis introduces the Integrated Emitter Turn-Off (IETO) Thyristor as a new high-power device. Known state-of-the-art research activities like the Dual GCT, the ETO thyristor and the ICT were presented and critically reviewed. A comparison with commercialized solutions identifies the pros and cons of each type of device family. Based on this analysis, the IETO structure is proposed, covering most benefits of each device class. In particular the combination of a MOS-assisted turn-off with a thyristor-based device allows a voltage-controlled MOS switching and the low on-state voltage of the thyristors. The following synthesis of an IETO device stands on a three-dimensional field of optimization spanned by electric, mechanical and thermal aspects. From an electric point of view, the lowest possible parasitic inductance and resistance within the commutation path are optimization criteria. The mechanical construction has to withstand the required contact pressure of multiple kilo Newtons. Finally, thermal borders limit the maximum average current of the device. FEM simulations covering these three aspects are performed for several design proposals. An IETO prototype is constructed and measurements on various test benches attest thermal, mechanical and electric performance. A local decoupling of the external driver stage and the presspack housing is presented by a cable connection. This separation enables a thermal and mechanical independence, which is advantageous in terms of vibrations and thermal cycles including increased reliability. The electric pulse performance of the prototype device is a factor of 3.1 above today''s solutions. In single-pulse measurements, a current up to 1600 A was successfully turned off at 115°C with an active silicon area of 823 mm². One reason for this increased turn-off capability is the extremely low-inductive construction. Additional functionality of the IETO thyristor like over-current self-protection and defined short-circuit failure state are successfully verified. Y1 - 2012 SN - 978-3-8440-1152-4 N1 - Zugl.: Aachen, Techn. Hochsch., Diss., 2012 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Magnor, D. A1 - Soltau, N. A1 - Bragard, Michael A1 - Schmiegel, A. A1 - De Doncker, R. W. A1 - Sauer, D. U. ED - de Santi, Giovanni Frederigo T1 - Analysis of the model dynamics for the battery and battery converter in a grid-connected 5 kW photovoltaic system T2 - Proceedings / 25th European Photovoltaic Solar Energy Conference and Exhibition ; 5th World Conference on Photovoltaic Energy Conversion ; Feria Valencia, Convention & Exhibition Centre, Valencia, Spain, conference 6 - 10 September 2010, exhibition 6 - 9 September 2010 ; Joint World Conference of: 25th European Photovoltic Solar Energy Conference and Exhibition, 36th US IEEE Photovoltaic Specialists Conference, 20th Asia/Pacific PV Science and Engineering Conference Y1 - 2010 SN - 3-936338-26-4 (DVD-ROM) N1 - EU PVSEC WCPEC PB - WIP Renewable Energies CY - [München] ER - TY - JOUR A1 - Bragard, Michael A1 - van Hoek, H. A1 - De Doncker, R. W. T1 - A major design step in IETO concept realization that allows overcurrent protection and pushes limits of switching performance JF - IEEE transactions on power electronics N2 - This paper presents the latest prototype of the integrated emitter turn-off thyristor concept, which potentially ranks among thyristor high-power devices like the gate turn-off thyristor and the integrated gate-commutated thyristor (IGCT). Due to modifications of the external driver stage and mechanical press-pack design optimization, this prototype allows for full device characterization. The turn-off capability was increased to 1600 A with an active silicon area of 823mm2 . This leads to a transient peak power of 672.1kW/cm² . Within this paper, measurements and concept assessment are presented and a comparison to state-of-the-art IGCT devices is provided. Y1 - 2012 U6 - https://doi.org/10.1109/TPEL.2012.2189136 SN - 0885-8993 VL - 27 IS - 9 SP - 4163 EP - 4171 PB - IEEE CY - New York ER - TY - CHAP A1 - Bragard, Michael A1 - Gottschlich, J. A1 - De Doncker, R. W. T1 - Design and realization of a credit card size driver stage for high power thyristor based devices with integrated MOS structure T2 - 2011 IEEE 8th International Conference on Power Electronics and ECCE Asia (ICPE & ECCE 2011) : Jeju, South Korea, 30 May 2011 - 3 June 2011 / [co-sponsored by the Korean Institute of Power Electronics ...] Y1 - 2011 SN - 978-1-61284-958-4 (Print) SN - 978-1-61284-956-0 (Online) U6 - https://doi.org/10.1109/ICPE.2011.5944661 SP - 1182 EP - 1189 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Bragard, Michael A1 - Ronge, C. A1 - De Doncker, R. W. T1 - Sandwich design of high-power thyristor based devices with integrated MOSFET structure T2 - Proceedings of the 2011 - 14th - European Conference on Power Electronics and Applications (EPE 2011) : Aug. 30, 2011 - Sept. 1, 2011, Birmingham, United Kingdom Y1 - 2011 SN - 978-1-61284-167-0 (Print) SN - 978-90-75815-15-3 (Online) PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Bragard, Michael A1 - Conrad, M. A1 - van Hoek, H. A1 - De Doncker, R. W. T1 - The integrated emitter turn-off thyristor (IETO) : an innovative thyristor-based high power semiconductor device using MOS assisted turn-off JF - IEEE transactions on industry applications Y1 - 2011 U6 - https://doi.org/10.1109/TIA.2011.2161432 SN - 0093-9994 VL - 47 IS - 5 SP - 2175 EP - 2182 PB - IEEE CY - New York ER - TY - CHAP A1 - Bragard, Michael A1 - Conrad, M. A1 - De Doncker, R. W. T1 - The integrated emitter turn-off thyristor (IETO) : an innovative thyristor based high power semiconductor device using MOS assisted turn-off T2 - 2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies] Y1 - 2010 SN - 978-1-4244-5286-6 (Print) SN - 978-1-4244-5287-3 (Online) U6 - https://doi.org/10.1109/ECCE.2010.5618410 SP - 4551 EP - 4557 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Bragard, Michael A1 - Soltau, N. A1 - De Doncker, R. W. A1 - Schmiegel, A. T1 - Design and implementation of a 5 kW photovoltaic system with li-ion battery and additional DC-DC converter T2 - 2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies] Y1 - 2010 SN - 978-1-4244-5286-6 (Print) SN - 978-1-4244-5287-3 (Online) U6 - https://doi.org/10.1109/ECCE.2010.5618220 SP - 2944 EP - 2949 PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Dachwald, Bernd A1 - Mikucki, Jill A1 - Tulaczyk, Slawek A1 - Digel, Ilya A1 - Espe, Clemens A1 - Feldmann, Marco A1 - Francke, Gero A1 - Kowalski, Julia A1 - Xu, Changsheng T1 - IceMole : A maneuverable probe for clean in situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems JF - Annals of Glaciology N2 - There is significant interest in sampling subglacial environments for geobiological studies, but they are difficult to access. Existing ice-drilling technologies make it cumbersome to maintain microbiologically clean access for sample acquisition and environmental stewardship of potentially fragile subglacial aquatic ecosystems. The IceMole is a maneuverable subsurface ice probe for clean in situ analysis and sampling of glacial ice and subglacial materials. The design is based on the novel concept of combining melting and mechanical propulsion. It can change melting direction by differential heating of the melting head and optional side-wall heaters. The first two prototypes were successfully tested between 2010 and 2012 on glaciers in Switzerland and Iceland. They demonstrated downward, horizontal and upward melting, as well as curve driving and dirt layer penetration. A more advanced probe is currently under development as part of the Enceladus Explorer (EnEx) project. It offers systems for obstacle avoidance, target detection, and navigation in ice. For the EnEx-IceMole, we will pay particular attention to clean protocols for the sampling of subglacial materials for biogeochemical analysis. We plan to use this probe for clean access into a unique subglacial aquatic environment at Blood Falls, Antarctica, with return of a subglacial brine sample. KW - Antarctic Glaciology KW - Extraterrestrial Glaciology KW - Glaciological instruments and methods KW - Subclacial exploration KW - Subglacial lakes Y1 - 2014 U6 - https://doi.org/10.3189/2014AoG65A004 SN - 1727-5644 VL - 55 IS - 65 SP - 14 EP - 22 PB - Cambridge University Press CY - Cambridge ER - TY - JOUR A1 - Bragard, Michael A1 - Soltau, N. A1 - Thomas, S. A1 - De Doncker, R. W. T1 - The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems JF - IEEE transactions on power electronics N2 - The continuously growing amount of renewable sources starts compromising the stability of electrical grids. Contradictory to fossil fuel power plants, energy production of wind and photovoltaic (PV) energy is fluctuating. Although predictions have significantly improved, an outage of multi-MW offshore wind farms poses a challenging problem. One solution could be the integration of storage systems in the grid. After a short overview, this paper focuses on two exemplary battery storage systems, including the required power electronics. The grid integration, as well as the optimal usage of volatile energy reserves, is presented for a 5- kW PV system for home application, as well as for a 100- MW medium-voltage system, intended for wind farm usage. The efficiency and cost of topologies are investigated as a key parameter for large-scale integration of renewable power at medium- and low-voltage. Y1 - 2010 U6 - https://doi.org/10.1109/TPEL.2010.2085455 SN - 0885-8993 VL - 25 IS - 12 SP - 3049 EP - 3056 PB - IEEE CY - New York ER - TY - JOUR A1 - Köllensperger, P. A1 - Bragard, Michael A1 - Plum, T. A1 - De Doncker, R. W. T1 - The dual GCT : new high-power device using optimized GCT technology JF - IEEE transactions on industry applications Y1 - 2009 U6 - https://doi.org/10.1109/TIA.2009.2027364 SN - 0093-9994 VL - 45 IS - 5 SP - 1754 EP - 1762 ER - TY - JOUR A1 - Stulpe, Werner T1 - From the attempt of certain classical reformulations of quantum mechanics to quasi-probability representations JF - Journal of Mathematical Physics N2 - The concept of an injective affine embedding of the quantum states into a set of classical states, i.e., into the set of the probability measures on some measurable space, as well as its relation to statistically complete observables is revisited, and its limitation in view of a classical reformulation of the statistical scheme of quantum mechanics is discussed. In particular, on the basis of a theorem concerning a non-denseness property of a set of coexistent effects, it is shown that an injective classical embedding of the quantum states cannot be supplemented by an at least approximate classical description of the quantum mechanical effects. As an alternative approach, the concept of quasi-probability representations of quantum mechanics is considered. Y1 - 2014 U6 - https://doi.org/10.1063/1.4861939 SN - 222-488 N1 - bereits unter gleichem Titel aufgenommen bei arxiv : http://arxiv.org/pdf/1307.2314.pdf VL - 55 IS - 1 PB - AIP Publishing CY - College Park, Md. ER - TY - CHAP A1 - Köllensperger, P. A1 - Bragard, Michael A1 - Plum, T. A1 - De Doncker, R. W. T1 - The dual GCT : a new high-power device using optimized GCT technology T2 - Conference record of the 2007 IEEE Industry Applications Conference : 42. IAS annual meeting ; September 23 - 27, 2007, New Orleans, Louisiana, USA Y1 - 2007 SN - 978-1-4244-1260-0 (Online) SN - 978-1-4244-1259-4 (Print) U6 - https://doi.org/10.1109/07IAS.2007.76 SP - 358 EP - 365 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - CHAP A1 - Nötzold, K. A1 - Uphues, A. A1 - Wegener, R. A1 - Soter, S. A1 - Fink, K. A1 - Bragard, Michael A1 - Griessel, R. T1 - Inverter based test setup for LVRT verification of a full-scale 2 MW wind power converter T2 - EPE Joint Wind Energy and T&D Chapters Seminar : 28th and 29th of June 2012, in the Utzon Centre, Aalborg, Denmark ; papers, posters, presentations. - Session 2: Grid connection, compliance Y1 - 2012 PB - EPE Association CY - Brussels ER - TY - CHAP A1 - Nötzold, K. A1 - Uphues, A. A1 - Wegener, R. A1 - Fink, K. A1 - Bragard, Michael A1 - Griessel, R. A1 - Soter, S. T1 - Inverter based test setup for LVRT verification of a full-scale 2 MW wind power converter T2 - 15th European Conference on Power Electronics and Applications (EPE), 2013 : 2 - 6 Sept. 2013, Lille, France / [EPE Association; PELS, IEEE Power Electronics Society] Y1 - 2013 SN - 978-1-4799-0115-9 (Online-Ausg.) U6 - https://doi.org/10.1109/EPE.2013.6634752 SP - 1037 EP - 1042 PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Murib, M. S. A1 - Yeap, W. S. A1 - Martens, D. A1 - Liu, X. A1 - Bienstman, P. A1 - Fahlman, M. A1 - Schöning, Michael Josef A1 - Michiels, L. A1 - Haenen, K. A1 - Serpengüzel, A. A1 - Wagner, Patrick T1 - Photonic studies on polymer-coated sapphire-spheres : a model system for biological ligands JF - Sensors and actuators A: Physical N2 - In this study we show an optical biosensor concept, based on elastic light scattering from sapphire microspheres. Transmitted and elastic scattering intensity of the microspheres (radius 500 μm, refractive index 1.77) on an optical fiber half coupler is analyzed at 1510 nm. The 0.43 nm angular mode spacing of the resonances is comparable to the angular mode spacing value estimated using the optical size of the microsphere. The spectral linewidths of the resonances are in the order of 0.01 nm, which corresponds to quality factors of approximately 105. A polydopamine layer is used as a functionalizing agent on sapphire microspherical resonators in view of biosensor implementation. The varying layer thickness on the microsphere is determined as a function of the resonance wavelength shift. It is shown that polymer functionalization has a minor effect on the quality factor. This is a promising step toward the development of an optical biosensor. Y1 - 2015 U6 - https://doi.org/10.1016/j.sna.2014.11.024 SN - 1873-3069 (E-Journal); 0924-4247 (Print) VL - 222 SP - 212 EP - 219 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Eilmann, Britta A1 - Weber, Pascale A1 - Rigling, Andreas A1 - Eckstein, Dieter T1 - Growth reactions of Pinus sylvestris L. and Quercus pubescens Willd. to drought years at a xeric site in Valais, Switzerland JF - Dendrochronologia Y1 - 2006 U6 - https://doi.org/doi:10.1016/j.dendro.2005.10.002 SN - 1612-0051 (Online) SN - 1125-7865 (Print) VL - 23 IS - 3 SP - 121 EP - 132 ER - TY - JOUR A1 - Fonti, Patrick A1 - Eilmann, Britta A1 - García-González, Ignacio A1 - von Arx, Georg T1 - Expeditious building of ring-porous earlywood vessel chronologies without loosing signal information JF - Trees : structure and function Y1 - 2009 U6 - https://doi.org/10.1007/s00468-008-0310-z SN - 0931-1890 (Print) SN - 1432-2285 (Online) VL - 23 IS - 3 SP - 665 EP - 671 PB - Springer CY - Berlin ER - TY - JOUR A1 - Eilmann, Britta A1 - Buchmann, Nina A1 - Siegwolf, Rolf A1 - Saurer, Matthias A1 - Cherubini, Paolo A1 - Rigling, Andreas T1 - Fast response of Scots pine to improved water availability reflected in tree-ring width and δ13C JF - Plant, Cell and Environment N2 - Drought-induced forest decline, like the Scots pine mortality in inner-Alpine valleys, will gain in importance as the frequency and severity of drought events are expected to increase. To understand how chronic drought affects tree growth and tree-ring δ13C values, we studied mature Scots pine in an irrigation experiment in an inner-Alpine valley. Tree growth and isotope analyses were carried out at the annual and seasonal scale. At the seasonal scale, maximum δ13C values were measured after the hottest and driest period of the year, and were associated with decreasing growth rates. Inter-annual δ13C values in early- and latewood showed a strong correlation with annual climatic conditions and an immediate decrease as a response to irrigation. This indicates a tight coupling between wood formation and the freshly produced assimilates for trees exposed to chronic drought. This rapid appearance of the isotopic signal is a strong indication for an immediate and direct transfer of newly synthesized assimilates for biomass production. The fast appearance and the distinct isotopic signal suggest a low availability of old stored carbohydrates. If this was a sign for C-storage depletion, an increasing mortality could be expected when stressors increase the need for carbohydrate for defence, repair or regeneration. Y1 - 2010 U6 - https://doi.org/10.1111/j.1365-3040.2010.02153.x SN - 1365-3040 (Online) SN - 0140-7791 (Print) VL - 33 IS - 8 SP - 1351 EP - 1360 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Eilmann, Britta A1 - Zweifel, Roman A1 - Buchmann, Nina A1 - Graf Pannatier, Elisabeth A1 - Rigling, Andreas T1 - Drought alters timing, quantity, and quality of wood formation in Scots pine JF - Journal of Experimental Botany Y1 - 2011 U6 - https://doi.org/10.1093/jxb/erq443 SN - 1460-2431 (Online) SN - 0022-0957 (Print) VL - 62 IS - 8 SP - 2763 EP - 2771 PB - Oxford University Press CY - Oxford ER - TY - JOUR A1 - Wegner, Lena A1 - von Arx, Georg A1 - Sass-Klaassen, Ute G. W. A1 - Eilmann, Britta T1 - ROXAS – an efficient and accurate tool to detect vessels in diffuse-porous species JF - IAWA Journal / International Association of Wood Anatomists Y1 - 2013 U6 - https://doi.org/10.1163/22941932-00000034 SN - 0928-1541 (Print) SN - 2294-1932 (Online) VL - 34 IS - 4 SP - 425 EP - 432 PB - Brill CY - Leiden ER - TY - JOUR A1 - Stojnic, Srdjan A1 - Sass-Klaassen, Ute G. M. A1 - Orlovic, Sasa A1 - Matovic, Bratislav A1 - Eilmann, Britta T1 - Plastic growth response of European beech provenances to dry site conditions T2 - IAWA Journal / International Association of Wood Anatomists Y1 - 2013 U6 - https://doi.org/10.1163/22941932-00000038 SN - 0928-1541 (Print) SN - 2294-1932 (Online) VL - 34 IS - 4 SP - 475 EP - 484 PB - Brill CY - Leiden ER - TY - JOUR A1 - Lévesque, Mathieu A1 - Saurer, Matthias A1 - Siegwolf, Rolf A1 - Eilmann, Britta A1 - Brang, Peter A1 - Bugmann, Harald A1 - Rigling, Andreas T1 - Drought response of five conifer species under contrasting water availability suggests high vulnerability of Norway spruce and European larch JF - Global Change Biology Y1 - 2013 U6 - https://doi.org/10.1111/gcb.12268 SN - 1365-2486 (Online) SN - 1354-1013 (Print) VL - 19 IS - 10 SP - 3184 EP - 3199 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Rigling, Andreas A1 - Bigler, Christof A1 - Eilmann, Britta A1 - Feldmeyer-Christe, Elisabeth A1 - Gimmi, Urs A1 - Ginzler, Christian A1 - Graf, Ulrich A1 - Mayer, Phillip A1 - Vacchiano, Giorgio A1 - Weber, Pascal A1 - Wohlgemuth, Thomas A1 - zweifel, Roman A1 - Dobbertin, Matthias T1 - Driving factors of a vegetation shift from Scots pine to pubescent oak in dry Alpine forests JF - Global Change Biology N2 - An increasing number of studies have reported on forest declines and vegetation shifts triggered by drought. In the Swiss Rhone valley (Valais), one of the driest inner-Alpine regions, the species composition in low elevation forests is changing: The sub-boreal Scots pine (Pinus sylvestris L.) dominating the dry forests is showing high mortality rates. Concurrently the sub-Mediterranean pubescent oak (Quercus pubescens Willd.) has locally increased in abundance. However, it remains unclear whether this local change in species composition is part of a larger-scale vegetation shift. To study variability in mortality and regeneration in these dry forests we analysed data from the Swiss national forest inventory (NFI) on a regular grid between 1983 and 2003, and combined it with annual mortality data from a monitoring site. Pine mortality was found to be highest at low elevation (below 1000 m a.s.l.). Annual variation in pine mortality was correlated with a drought index computed for the summer months prior to observed tree death. A generalized linear mixed-effects model indicated for the NFI data increased pine mortality on dryer sites with high stand competition, particularly for small-diameter trees. Pine regeneration was low in comparison to its occurrence in the overstorey, whereas oak regeneration was comparably abundant. Although both species regenerated well at dry sites, pine regeneration was favoured at cooler sites at higher altitude and oak regeneration was more frequent at warmer sites, indicating a higher adaptation potential of oaks under future warming. Our results thus suggest that an extended shift in species composition is actually occurring in the pine forests in the Valais. The main driving factors are found to be climatic variability, particularly drought, and variability in stand structure and topography. Thus, pine forests at low elevations are developing into oak forests with unknown consequences for these ecosystems and their goods and services. Y1 - 2012 U6 - https://doi.org/10.1111/gcb.12038 SN - 1354-1013 (Print) SN - 1365-2486 (Online) VL - 19 IS - 1 SP - 229 EP - 240 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Egli, Simon A1 - Ayer, François A1 - Peter, Martina A1 - Eilmann, Britta A1 - Rigling, Andreas T1 - Is forest mushroom productivity driven by tree growth? Results from a thinning experiment JF - Annals of Forest Science N2 - • Most of the edible forest mushrooms are mycorrhizal and depend on carbohydrates produced by the associated trees. Fruiting patterns of these fungi are not yet fully understood since climatic factors alone do not completely explain mushroom occurrence. • The objective of this study was to retrospectively find out if changing tree growth following an increment thinning has influenced the diversity patterns and productivity of associated forest mushrooms in the fungus reserve La Chanéaz, Switzerland. • The results reveal a clear temporal relationship between the thinning, the growth reaction of trees and the reaction of the fungal community, especially for the ectomycorrhizal species. The tree-ring width of the formerly suppressed beech trees and the fruit body number increased after thinning, leading to a significantly positive correlation between fruit body numbers and tree-ring width. • Fruit body production was influenced by previous annual tree growth, the best accordance was found between fruit body production and the tree-ring width two years previously. • The results support the hypothesis that ectomycorrhizal fruit body production must be linked with the growth of the associated host trees. Moreover, the findings indicate the importance of including mycorrhizal fungi as important players when discussing a tree as a carbon source or sink. Y1 - 2010 U6 - https://doi.org/10.1051/forest/2010011 SN - 1286-4560 (Print) SN - 1297-966X (Online) VL - 67 IS - 5 SP - 509 PB - Springer CY - Paris ER - TY - JOUR A1 - Eilmann, Britta A1 - Dobbertin, Matthias A1 - Rigling, Andreas T1 - Growth response of Scots pine with different crown transparency status to drought release JF - Annals of Forest Science Y1 - 2013 U6 - https://doi.org/10.1007/s13595-013-0310-z SN - 1286-4560 (Print) SN - 1297-966X (Online) VL - 70 IS - 7 SP - 685 EP - 693 PB - Springer CY - Cham ER - TY - JOUR A1 - Fonti, Patrick A1 - von Arx, Georg A1 - García-González, Ignacio A1 - Eilmann, Britta A1 - Sass-Klaassen, Ute G. W. A1 - Gärtner, Holger A1 - Eckstein, Dieter T1 - Studying global change through investigation of the plastic responses of xylem anatomy in tree rings JF - New Phytologist N2 - Variability in xylem anatomy is of interest to plant scientists because of the role water transport plays in plant performance and survival. Insights into plant adjustments to changing environmental conditions have mainly been obtained through structural and functional comparative studies between taxa or within taxa on contrasting sites or along environmental gradients. Yet, a gap exists regarding the study of hydraulic adjustments in response to environmental changes over the lifetimes of plants. In trees, dated tree-ring series are often exploited to reconstruct dynamics in ecological conditions, and recent work in which wood-anatomical variables have been used in dendrochronology has produced promising results. Environmental signals identified in water-conducting cells carry novel information reflecting changes in regional conditions and are mostly related to short, sub-annual intervals. Although the idea of investigating environmental signals through wood anatomical time series goes back to the 1960s, it is only recently that low-cost computerized image-analysis systems have enabled increased scientific output in this field. We believe that the study of tree-ring anatomy is emerging as a promising approach in tree biology and climate change research, particularly if complemented by physiological and ecological studies. This contribution presents the rationale, the potential, and the methodological challenges of this innovative approach. Y1 - 2010 U6 - https://doi.org/10.1111/j.1469-8137.2009.03030.x SN - 1469-8137 (Online) SN - 0028-646X (Print) VL - 185 IS - 1 SP - 42 EP - 53 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Lévesque, Mathieu A1 - Siegwolf, Rolf A1 - Eilmann, Britta A1 - Saurer, Matthias A1 - Rigling, Andreas T1 - Increased water-use efficiency does not lead to enhanced tree growth under xeric and mesic conditions JF - New Phytologist Y1 - 2014 U6 - https://doi.org/10.1111/nph.12772 SN - 1469-8137 (Online) SN - 0028-646X (Print) VL - 203 IS - 1 SP - 94 EP - 109 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Eilmann, Britta A1 - Zweifel, Roman A1 - Buchmann, Nina A1 - Fonti, Patrick A1 - Rigling, Andreas T1 - Drought-induced adaptation of the xylem in Scots pine and pubescent oak JF - Tree Physiology Y1 - 2009 U6 - https://doi.org/10.1093/treephys/tpp035 SN - 0829-318X (Print) SN - 1758-4469 (Online) VL - 29 IS - 8 SP - 1011 EP - 1020 PB - Heron CY - Victoria, BC ER - TY - JOUR A1 - Dobbertin, Matthias A1 - Eilmann, Britta A1 - Bleuler, Peter A1 - Giuggiola, Arnaud A1 - Graf Pannatier, Elisabeth A1 - Landolt, Werner A1 - Schleppi, Patrick A1 - Rigling, Andreas T1 - Effect of irrigation on needle morphology, shoot and stem growth in a drought-exposed Pinus sylvestris forest JF - Tree Physiology N2 - In Valais, Switzerland, Scots pines (Pinus sylvestris L.) are declining, mainly following drought. To assess the impact of drought on tree growth and survival, an irrigation experiment was initiated in 2003 in a mature pine forest, approximately doubling the annual precipitation. Tree crown transparency (lack of foliage) and leaf area index (LAI) were annually assessed. Seven irrigated and six control trees were felled in 2006, and needles, stem discs and branches were taken for growth analysis. Irrigation in 2004 and 2005, both with below-average precipitation, increased needle size, area and mass, stem growth and, with a 1-year delay, shoot length. This led to a relative decrease in tree crown transparency (−14%) and to an increase in stand LAI (+20%). Irrigation increased needle length by 70%, shoot length by 100% and ring width by 120%, regardless of crown transparency. Crown transparency correlated positively with mean needle size, shoot length and ring width and negatively with specific leaf area. Trees with high crown transparency (low growth, short needles) experienced similar increases in needle mass and growth with irrigation than trees with low transparency (high growth, long needles), indicating that seemingly declining trees were able to ‘recover’ when water supply became sufficient. A simple drought index before and during the irrigation explained most of the variation found in the parameters for both irrigated and control trees. Y1 - 2010 U6 - https://doi.org/10.1093/treephys/tpp123 SN - 1758-4469 (Online) SN - 0829-318X (Print) VL - 30 IS - 3 SP - 346 EP - 360 PB - Oxford University Press CY - Oxford ER - TY - JOUR A1 - Rigling, Andreas A1 - Eilmann, Britta A1 - Koechli, Roger A1 - Dobbertin, Matthias T1 - Mistletoe-induced crown degradation in Scots pine in a xeric environment N2 - Increasing Scots pine (Pinus sylvestris L.) mortality has been recently observed in the dry inner valleys of the European Alps. Besides drought, infection with pine mistletoe (Viscum album ssp. austriacum) seems to play an important role in the mortality dynamics of Scots pines, but how mistletoes promote pine decline remains unclear. To verify whether pine mistletoe infection weakens the host via crown degradation, as observed for dwarf mistletoes, we studied the negative effects of pine mistletoe infestation on the photosynthetic tissues and branch growth of pairs of infested and non-infested branches. Pine mistletoe infection leads to crown degradation in its host by reducing the length, the radial increment, the ramification, the needle length and the number of needle years of the infested branches. This massive loss in photosynthetic tissue results in a reduction in primary production and a subsequent decrease in carbohydrate availability. The significant reduction in needle length due to mistletoe infection is an indication for a lower water and nutrient availability in infested branches. Thus, mistletoe infection might lead to a decrease in the availability of water and carbohydrates, the two most important growth factors, which are already shortened due to the chronic drought situation in the area. Therefore, pine mistletoe increases the risk of drought-induced mortality of its host when growing in a xeric environment. Y1 - 2010 U6 - https://doi.org/10.1093/treephys/tpq038 SN - 1758-4469 (Online) SN - 0829-318X (Print) VL - 30 IS - 7 SP - 845 EP - 832 PB - Oxford University Press CY - Oxford ER -