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  - 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  - http://dx.doi.org/10.1109/ICPE.2011.5944661
SP  - 1182
EP  - 1189
PB  - IEEE
CY  - Piscataway, NJ
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  - 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  - http://dx.doi.org/10.1109/EPE.2013.6634752
SP  - 1037
EP  - 1042
PB  - IEEE
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  - 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  - http://dx.doi.org/10.1109/07IAS.2007.76
SP  - 358
EP  - 365
PB  - IEEE Operations Center
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  - http://dx.doi.org/10.1109/ECCE.2010.5618220
SP  - 2944
EP  - 2949
PB  - IEEE
CY  - Piscataway, NJ
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  - http://dx.doi.org/10.1109/ECCE.2010.5618410
SP  - 4551
EP  - 4557
PB  - IEEE
CY  - Piscataway, NJ
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  - 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  - Beging, Stefan
A1  - Poghossian, Arshak
A1  - Mlynek, D.
A1  - Hataihimakul, S.
A1  - Pedraza, A.
A1  - Dhawan, S.
A1  - Laube, N.
A1  - Kleinen, L.
A1  - Baldsiefen, G.
A1  - Busch, H.
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  - 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  - 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  - 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  - 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  - http://dx.doi.org/10.5162/IMCS2012/P2.5.2
SP  - 1575
EP  - 1578
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  - http://dx.doi.org/10.5162/IMCS2012/P2.1.14
SP  - 1364
EP  - 1367
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  - http://dx.doi.org/10.1115/ESDA2014-20380
SP  - V001T06A005
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  - http://dx.doi.org/10.1557/PROC-0952-F08-02
N1  - Vol. 952 - Symposium F - Integrated Nanosensors
SP  - 1
EP  - 9
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  - 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  - 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  - 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  - http://dx.doi.org/10.5162/IMCS2012/3.2.3
SP  - 269
EP  - 272
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  - http://dx.doi.org/10.5162/IMCS2012/4.2.6
SP  - 356
EP  - 359
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  - 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  - http://dx.doi.org/10.1109/MobileCloud.2014.25
SP  - 101
EP  - 108
PB  - IEEE Service Center
CY  - Piscataway, NJ
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  - 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  - 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  - 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  - http://dx.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  - 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  - 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  - 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  - 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  - http://dx.doi.org/10.1109/EuMC.2014.6986645
SP  - 1154
EP  - 1157
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Krichel, Frank
A1  - Müller, Klaus-Peter
T1  - Lightning protection design of a renewable energy hybrid-system without power mains connection
N2  - In the year 2000 a direct lightning strike to the hybridsystem without power mains connection VATALI on the Greek island Crete results in the destruction and damage of some mechanical and electrical components. The hybrid-system VATALI was not lightning protected at that time. The hardware damage costs are approx. 60,000 €. The exposed site of the hybrid-system on top of a mountain was and still is the reason for a high risk of lightning strikes. Also in the future further lightning strikes have to be taken into consideration. In the paper a fundamental lightning protection design concept for renewable energy hybrid-systems without power mains connection and protection measures against direct strikes and overvoltages are shown in detail. The design concept was realized exemplarily for the hybrid-system VATALI. The hardware costs for the protection measures were about 15,000 €. About 50% of the costs are due to protection measures against direct strikes, 50% are due to overvoltage protection. Future extensions, new installations, or modifications have to be included into the lightning protection design concept of the hybrid-system.
KW  - Blitzschutz
KW  - Erneuerbare Energien
KW  - Hybridsystem
KW  - Lightning protection
KW  - Renewable energy
KW  - hybrid-system
Y1  - 2001
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Kern, Alexander
A1  - Frentzel, Ralf
A1  - Heidler, Fridolin
A1  - Seevers, M.
T1  - Assessment of the lightning transient coupling to control cables interconnecting structures in large industrial facilities and power plants
N2  - Large industrial facilities and power plants often require a huge number fo information and control cables between the differnet structures. These I&C-cables can be routed in reinforced concrete cable ducts or in isolated buried cable runs. KTA 2206 is the German lightning protection standard for nuclear power plants. During the last several years considerable effort has been made to revise this standard. Despite the well established principles and design guidelines for the construction of the lightning protection system, this standard puts special emphasis on the coupling of transient overvoltages to I&C-cables.
KW  - Blitzschutz
KW  - Elektromagnetische Kopplung
KW  - Überspannung
KW  - Kraftwerke
KW  - Industrieanlagen
KW  - Lightning
KW  - current distribution
KW  - electromagnetic coupling
KW  - overvoltages
Y1  - 2000
ER  - 
TY  - CHAP
A1  - Poghossian, Arshak
A1  - Schumacher, Kerstin
A1  - Kloock, Joachim P.
A1  - Rosenkranz, Christian
A1  - Schultze, Joachim W.
A1  - Müller-Veggian, Mattea
A1  - Schöning, Michael Josef
T1  - Functional testing and characterisation of ISFETs on wafer level by means of a micro-droplet cell
N2  - A wafer-level functionality testing and characterisation system for ISFETs (ionsensitive field-effect transistor) is realised by means of integration of a specifically designed capillary electrochemical micro-droplet cell into a commercial wafer prober-station. The developed system allows the identification and selection of “good” ISFETs at the earliest stage and to avoid expensive bonding, encapsulation and packaging processes for nonfunctioning ISFETs and thus, to decrease costs, which are wasted for bad dies. The developed system is also feasible for wafer-level characterisation of ISFETs in terms of sensitivity, hysteresis and response time. Additionally, the system might be also utilised for wafer-level testing of further electrochemical sensors.
KW  - Biosensor
KW  - Biosensorik
KW  - ISFET
KW  - Wafer
KW  - ISFET
KW  - wafer-level testing
KW  - capillary micro-droplet cell
Y1  - 2006
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:a96-opus-1259
ER  - 
TY  - CHAP
A1  - Wagner, Torsten
A1  - Schöning, Michael Josef
T1  - Preface of the Special Issue of I3S 2005 in Jülich (Germany)
N2  - International Symposium on Sensor Science, I3S 2005 <3; 2005; Juelich, Germany> In: Sensors 2006, 6, 260-261 ISSN 1424-8220
KW  - Biosensor
KW  - I3S 2005
KW  - International Symposium on Sensor Science
Y1  - 2006
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:a96-opus-1365
ER  - 
TY  - CHAP
A1  - Staat, Manfred
A1  - Heitzer, Michael
T1  - The restricted influence of kinematic hardening on shakedown loads
N2  - Structural design analyses are conducted with the aim of verifying the exclusion of ratcheting. To this end it is important to make a clear distinction between the shakedown range and the ratcheting range. In cyclic plasticity more sophisticated hardening models have been suggested in order to model the strain evolution observed in ratcheting experiments. The hardening models used in shakedown analysis are comparatively simple. It is shown that shakedown analysis can make quite stable predictions of admissible load ranges despite the simplicity of the underlying hardening models. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis. Both give identical or similar shakedown ranges. Structural shakedown analyses show that the loading may have a more pronounced effect than the hardening model.
KW  - Biomedizinische Technik
KW  - Einspielen <Werkstoff>
KW  - Shakedown
KW  - Ratcheting
KW  - Bruchmechanik
KW  - shakedown
KW  - material shakedown
KW  - linear kinematic hardening
KW  - nonlinear kinematic hardening
KW  - ratchetting
Y1  - 2002
ER  - 
TY  - CHAP
A1  - Staat, Manfred
A1  - Heitzer, Michael
T1  - Direct static FEM approach to limit and shakedown analysis
N2  - Safety and reliability of structures may be assessed indirectly by stress distributions. Limit and shakedown theorems are simplified but exact methods of plasticity that provide safety factors directly in the loading space. These theorems may be used for a direct definition of the limit state function for failure by plastic collapse or by inadaptation. In a FEM formulation the limit state function is obtained from a nonlinear optimization problem. This direct approach reduces considerably the necessary knowledge of uncertain technological input data, the computing time, and the numerical error. Moreover, the direct way leads to highly effective and precise reliability analyses. The theorems are implemented into a general purpose FEM program in a way capable of large-scale analysis.
KW  - Einspielen <Werkstoff>
KW  - Nichtlineare Optimierung
KW  - Shakedown
KW  - Shakedown
KW  - limit load
KW  - lower bound theorem
KW  - nonlinear optimization
KW  - reliability
Y1  - 2000
ER  - 
TY  - CHAP
A1  - Staat, Manfred
T1  - Design by Analysis of Pressure Components by non-linear Optimization
N2  - This paper presents the direct route to Design by Analysis (DBA) of the new European pressure vessel standard in the language of limit and shakedown analysis (LISA). This approach leads to an optimization problem. Its solution with Finite Element Analysis is demonstrated for some examples from the DBA-Manual. One observation from the examples is, that the optimisation approach gives reliable and close lower bound solutions leading to simple and optimised design decision.
KW  - Analytischer Zulaessigkeitsnachweis
KW  - FEM
KW  - Einspiel-Analyse
KW  - design-by-analysis
KW  - finite element analysis
KW  - limit and shakedown analysis
Y1  - 2003
ER  - 
TY  - CHAP
A1  - Fabo, Sabine
T1  - Audio-visual hybrids : between immersion and detachment
N2  - Close interrelations between sound and image are not a mere phenomenon of today’s multimedia technology. The idea of the synthesis of different media lies at the core of the concept of the Gesamtkunstwerk in the second half of the 19th century and it can also be traced back to the synaesthesia debate at the beginning of the 20th century [...].
KW  - Elektronische Kunst
KW  - Klangkunst
KW  - Hybride Kunst
KW  - Medienkunst
KW  - Hybrid Art
KW  - Sound Art
KW  - Audio-visual Art
Y1  - 2004
ER  - 
TY  - CHAP
A1  - Surtees, A. J.
A1  - Gillespie, A.
A1  - Kern, Alexander
A1  - Rousseau, A.
T1  - DEVELOPMENT OF A RISK ASSESSMENT CALCULATOR BASED ON A SIMPLIFIED FORM OF THE IEC 62305-2 STANDARD ON LIGHTNING PROTECTION
N2  - Neue Blitzschutznorm IEC 62305. Entwicklung einer einfachen Software zur Risikoabwägung
N2  - IEC Technical Committee 81 is currently creating the new IEC 62305 series of standards on Lightning Protection. Working Group 9 is responsible for Part 2 of this series, which deals with the assessment and management of risk its CDV (Committee Draft for Voting) stage and has been circulated to National Committees for comment. The paper details the development of the Simplified IEC Risk Assessment Calculator software tool as described in Informative Annex J of IEC62305-2 Ed.1/CDV 2. This tool is intended as a simplified implementation of the more rigorous treatment of risk management found in the written document. It is designed to be relatively intuitive for users who wish to obtain an initial assessment of risk sensitivity, but should not be considered a substitute to a full understanding of the methods provided in the standard when dealing with more complicated structures or those where greater risks to personal or system operation are involved.
KW  - Risiko
KW  - Risikoabwägung
KW  - Blitzrisiko
KW  - Blitzschutz
KW  - Risk
KW  - Risk Management
KW  - Risk Assessment
KW  - Lightning Risk
KW  - Lightning Protection
Y1  - 2004
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Seevers, M.
A1  - Zischank, Wolfgang J.
T1  - Magnetic Fields and Induced Voltages in case of a Direct Strike - Comparison of Results obtained from Measurements at a Scaled Building to those of IEC 62305-4
N2  - In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the similarity relations theory. The calculations are based on the approximate formulae given in IEC 62305-4 and have to be supplemented by a rough estimation of the additional shielding effect of a second reinforcement layer. The comparison shows, that the measured peak values of the magnetic field and its derivative are mostly lower than the calculated. The induced voltages are in good agreement. Hence, calculations of the induced voltages based on IEC 62305-4 are a good method for lightning protection studies of buildings, where the reinforcement is used as a grid-like electromagnetic shield.
N2  - Auswirkungen eines direkten Blitzeinschlages auf ein Gebäude, Vergleich von experimentellen Ergebnissen und Berechnungen basierend auf einer Formel aus der IEC 62305-4
KW  - Blitz
KW  - Direkter Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Magnetische Felder
KW  - Induzierte Spannungen
KW  - Kalkulation
KW  - Direct lightning strike
KW  - electromagnetic shield
KW  - magnetic fields
KW  - induced voltages
KW  - calculations
Y1  - 2004
SN  - 0304-3886
N1  - Journal of electrostatics: Beitr. auf S. 379 - 385. doi:10.1016/j.elstat.2006.09.004
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Wiesinger, J.
A1  - Stimper, K.
A1  - Kern, Alexander
A1  - Seevers, M.
T1  - Magnetic Fields and Induced Voltages inside LPZ 1 Measured at a 1:6 Scale Model Building
N2  - Laborexperimente zu Blitzschutzzonen in Stahlbetongebäuden anhand eines Modells im Maßstab 1:6
N2  - For the application of the concept of Lightning Protection Zones (LPZ), the knowledge of the magnetic fields and induced voltages inside a structure is necessary. Laboratory experiments have been conducted at a downscaled model of a building (scale factor 1:6) to determine these electromagnetic quantities in case of a direct strike to the structure. The model (3 m x 2 m x 2 m) represented a small industrial building using the reinforcement of the concrete as electromagnetic shield. The magnetic fields and magnetic field derivatives were measured at several location inside the scaled model. Further, the voltages induced on three typical cable routes inside the model was determined. The influence of the lightning current waveshape, point-of-strike, bonding of the cable routes, and bridging of an expansion joint in the middle of the building on these quantities was studied.
KW  - Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Stahlbeton
KW  - Maßstabsgetreues Modell
KW  - Lightning
KW  - electromagnetic shielding
KW  - reinforced concrete
KW  - scaled model
Y1  - 2004
ER  - 
TY  - CHAP
A1  - Darveniza, M.
A1  - Flisowski, Z.
A1  - Kern, Alexander
A1  - Landers, E.-U.
A1  - LoPiparo, G.
A1  - Mazzetti, C.
A1  - Rousseau, A.
A1  - Sherlock, J.
T1  - Application problems of the probabilistic approach to the assessment of risk for structures and services
N2  - The paper deals with the development of the probabilistic approach to the assessment of risk due to lightning. Sources of damage, types of damage and types of loss are defined and, accordingly, the procedure for risk analysis and the way of assessment of different risk components is proposed. The way to evaluate the influence of different protection measures (lightning protection system; shielding of structure, cables and equipment; routing of internal wiring; surge protective device) in reducing such probabilities is considered. The paper has been prepared within the framework of the activity of IEC TC81-WG9/CLC TC81-WG4 directed to prepare the draft IEC 62305-2 Risk Management, in cooperation with the Secretary of IEC/CLC TC81.
KW  - Blitzschutz
KW  - Risikoabwägung
KW  - Lightning protection system
KW  - risk assessment
KW  - protection measures
Y1  - 2002
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Krichel, Frank
T1  - Considerations about the lightning protection system of mains independent renewable energy hybrid-systems - practical experiences
N2  - In the paper a lightning protection design concept for renewable energy hybrid-systems without power mains connection is described. Based on a risk analysis protection measures against direct strikes and overvoltages are shown in an overview. The design concept is realized exemplarily for the hybrid-system VATALI on the Greek island Crete. VATALI, not lightning protected at that time, was a victim of a lightning strike in the year 2000 causing destructions and damages of some mechanical and electrical components with costs of approx. 60.000 €. The hardware costs for the protection measures were about 15.000 €: about 50% of the costs are due to protection measures against direct strikes, 50% are due to overvoltage protection.
KW  - Blitzschutz
KW  - Erneuerbare Energien
KW  - Hybridsystem
KW  - Photovoltaikanlage
KW  - Windenergieanlage
KW  - Lightning protection
KW  - renewable energy
KW  - hybrid system
KW  - photovoltaic system
KW  - wind turbine
Y1  - 2002
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Kern, Alexander
A1  - Metwally, I. A.
A1  - Wiesinger, J.
A1  - Seevers, M.
T1  - Laboratory simulation of direct lightning strokes to a modelled building - measurement of magnetic fields and induced voltages
N2  - In IEC 61312-2 equations for the assessment of the magnetic fields inside structures due to a direct lightning strike are given. These equations are based on computer simulations for shields consisting of a single-layer steel grid of a given mesh width. Real constructions, however, contain at least two layers of reinforcement steel grids. The objective of this study was to experimentally determine the additional shielding effectiveness of a second reinforcement layer compared to a single-layer grid. To this end, simulated structures were set up in the high current laboratory. The structures consisted of cubic cages of 2 m side length with one or with two reinforcement grids, respectively. The structures were exposed to direct lightning currents representing the variety of anticipated lightning current waveforms. The magnetic fields and their derivatives at several positions inside the structure as well as the voltage between “floor” and “roof” in the center were determined for different current injection points. From these data the improvement of the shielding caused by a second reinforcement layer is derived.
KW  - Direkter Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Magnetische Felder
KW  - Induzierte Spannungen
KW  - Stahlbetonkonstruktion
KW  - Lightning
KW  - electromagnetic shielding
KW  - magnetic field
KW  - reinforced concrete
KW  - induced voltage
Y1  - 2002
ER  - 
TY  - CHAP
A1  - Dielmann, Klaus-Peter
A1  - Peters, Bernhard
T1  - Micro Turbine Using Different Gases and Liquid Fuels
N2  - Micro turbine using different gases and liquid fuels
KW  - Gasturbine
KW  - Mikrogasturbine
KW  - Micro turbine
Y1  - 2002
ER  - 
TY  - CHAP
A1  - Fredebeul-Krein, Markus
T1  - Developing competitive broadband markets: Lessons learnt from German and European regulatory approaches on broad-band access
N2  - A key feature of future broadband markets will be diversity of access technologies, meaning that numerous technologies will be exploited for broadband communication. Various factors will affect the success of these future broadband markets, the regulatory policy being one amongst others. So far, a coherent regulatory approach does not exist as to broadband markets. First results of policies so far suggest that less sector-specific regulation is likely to occur. Instead, regulators must ensure that access to networks and services of potentially dominant providers in a relevant broadband market will satisfy requirements for openness and non-discrimination. In this environment the future challenge of regulationg broadband markets will be to set the right incentives for investment into new infrastructures. This paper examines whether there is a need for the regulation of future broadband access markets an if yes, what is the appropriate regulatory tool to do so. Thereby the focus is on the analysis of European broadband markets and the regulatory approaches applied. The first section provides a description of the characteristics of future broadband markets. The second section discusses possible bottlenecks on broadband markets an their regulatory implications. The third section will examine regulatory issues concerning access to broadband networks in more detail. This will be done by comparing the regulatory approaches of European countries and the results in terms of bradband penetration. The final section will give key recommendations for a regulatory strategy on brandband access markets.
KW  - Telekommunikationsmarkt
KW  - Telekommunikationsmarkt
Y1  - 2006
N1  - paper presented at 16th Biennial conference of the International Telecommunications Society. Information Communication Technology: Opportunities and Challenges for Telecommunications. June 12-16, 2006 Beijing, China.
ER  - 
TY  - CHAP
A1  - Staat, Manfred
A1  - Ballmann, J.
T1  - Fundamental aspects of numerical methods for the propagation of multi-dimensional nonlinear waves in solids
T2  - Nonlinear hyperbolic equations : theory, computations methods, and applications ; proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen
N2  - The nonlinear scalar constitutive equations of gases lead to a change in sound speed from point to point as would be found in linear inhomogeneous (and time dependent) media. The nonlinear tensor constitutive equations of solids introduce the additional local effect of solution dependent anisotropy. The speed of a wave passing through a point changes with propagation direction and its rays are inclined to the front. It is an open question whether the widely used operator splitting techniques achieve a dimensional splitting with physically reasonable results for these multi-dimensional problems. May be this is the main reason why the theoretical and numerical investigations of multi-dimensional wave propagation in nonlinear solids are so far behind gas dynamics. We hope to promote the subject a little by a discussion of some fundamental aspects of the solution of the equations of nonlinear elastodynamics. We use methods of characteristics because they only integrate mathematically exact equations which have a direct physical interpretation.
KW  - Nichtlineare Welle
KW  - Nichtlineare Gleichung
KW  - Festkörper
KW  - Elastodynamik
KW  - Multi-dimensional wave propagation
KW  - nonlinear solids
KW  - nonlinear tensor constitutive equation
Y1  - 1989
SP  - 574
EP  - 588
ER  -