@article{FerreinSteinbauerMcPhillipsetal.2009,
  author    = {Ferrein, Alexander and Steinbauer, Gerald and McPhillips, Graeme and Niem{\"u}ller, Tim and Potgieter, Anet},
  title     = {Team Zadeat 2009 : team report},
  volume    = {6},
  pages     = {1},
  year      = {2009},
  language  = {en}
}
@article{Gligorevic2008,
  author    = {Gligorevic, Snjezana},
  title     = {Joint channel estimation and equalisation of fast time-varying frequency-selective channels},
  series = {European transactions on telecommunications},
  volume    = {Vol. 19},
  journal   = {European transactions on telecommunications},
  number    = {Iss. 1},
  issn      = {1541-8251; 2161-3915; 1120-3862; 1124-318X},
  pages     = {1 -- 13},
  year      = {2008},
  language  = {en}
}
@article{Gligorevic2013,
  author    = {Gligorevic, Snjezana},
  title     = {Airport surface propagation channel in the C-Band: measurements and modeling},
  series = {IEEE transactions on antennas and propagation},
  volume    = {Vol. 61},
  journal   = {IEEE transactions on antennas and propagation},
  number    = {Iss. 9},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0018-926x},
  pages     = {4792 -- 4802},
  year      = {2013},
  language  = {en}
}
@article{Alt1974,
  author    = {Alt, Helmut},
  title     = {1,45 Mrd. DM f{\"u}r die Kohlevergasung},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {24},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {5},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {243 -- 244},
  year      = {1974},
  language  = {de}
}
@article{Alt1992,
  author    = {Alt, Helmut},
  title     = {Renditevergleich zwischen Immobilien und Festverzinslichen},
  series = {Die Bank},
  journal   = {Die Bank},
  number    = {H. 2},
  issn      = {0342-3182},
  pages     = {91 -- 92},
  year      = {1992},
  language  = {de}
}
@article{AlhwarinFerreinScholl2014,
  author    = {Alhwarin, Faraj and Ferrein, Alexander and Scholl, Ingrid},
  title     = {IR stereo kinect: improving depth images by combining structured light with IR stereo},
  pages     = {1 -- 9},
  year      = {2014},
  language  = {en}
}
@article{HoltrupSadeghfamHeuermannetal.2014,
  author    = {Holtrup, S. and Sadeghfam, Arash and Heuermann, Holger and Awakowicz, P.},
  title     = {Characterization and optimization technique for microwave-driven high-intensity discharge lamps using hot S-parameters},
  series = {IEEE transactions on microwave theories and techniques},
  volume    = {62},
  journal   = {IEEE transactions on microwave theories and techniques},
  number    = {10},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0018-9480},
  doi       = {10.1109/TMTT.2014.2342652},
  pages     = {2471 -- 2480},
  year      = {2014},
  abstract  = {High-intensity discharge lamps can be driven by radio-frequency signals in the ISM frequency band at 2.45 GHz, using a matching network to transform the impedance of the plasma to the source impedance. To achieve an optimal operating condition, a good characterization of the lamp in terms of radio frequency equivalent circuits under operating conditions is necessary, enabling the design of an efficient matching network. This paper presents the characterization technique for such lamps and presents the design of the required matching network. For the characterization, a high-intensity discharge lamp was driven by a monofrequent large signal at 2.45 GHz, whereas a frequency sweep over 300 MHz was performed across this signal to measure so-called small-signal hot S-parameters using a vector network analyzer. These parameters are then used as an equivalent load in a circuit simulator to design an appropriate matching network. Using the measured data as a black-box model in the simulation results in a quick and efficient method to simulate and design efficient matching networks in spite of the complex plasma behavior. Furthermore, photometric analysis of high-intensity discharge lamps are carried out, comparing microwave operation to conventional operation.},
  language  = {en}
}
@article{Alt1975,
  author    = {Alt, Helmut},
  title     = {Elektro-Brikett-Zentralspeicherheizung soll die Spitzenlast der EVU schonen},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {25},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {4},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {148 -- 149},
  year      = {1975},
  language  = {de}
}
@article{Alt1974,
  author    = {Alt, Helmut},
  title     = {Ab 1975 Uranerz aus Rabbit-Lake},
  series = {Energiewirtschaftliche Tagesfragen},
  volume    = {24},
  journal   = {Energiewirtschaftliche Tagesfragen},
  number    = {1/2},
  publisher = {VDE-Verlag},
  address   = {Berlin},
  issn      = {0720-6240},
  pages     = {34},
  year      = {1974},
  language  = {de}
}
@article{BragardvanHoekDeDoncker2012,
  author    = {Bragard, Michael and van Hoek, H. and De Doncker, R. W.},
  title     = {A major design step in IETO concept realization that allows overcurrent protection and pushes limits of switching performance},
  series = {IEEE transactions on power electronics},
  volume    = {27},
  journal   = {IEEE transactions on power electronics},
  number    = {9},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0885-8993},
  doi       = {10.1109/TPEL.2012.2189136},
  pages     = {4163 -- 4171},
  year      = {2012},
  abstract  = {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.},
  language  = {en}
}
@article{BragardBragard2012,
  author    = {Bragard, G. and Bragard, Michael},
  title     = {Ein kosteng{\"u}nstiges, universelles Modellbauinterface},
  series = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.},
  volume    = {65},
  journal   = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.},
  number    = {5},
  publisher = {Seeberger},
  address   = {Neuss},
  issn      = {0025-5866},
  pages     = {290 -- 293},
  year      = {2012},
  abstract  = {Wir stellen einen USB-Baustein vor, der eine kosteng{\"u}nstige und universelle M{\"o}glichkeit schafft , im Unterricht den Themenkreis Messen-Steuern-Regeln zu behandeln. Die Funktionalit{\"a}t orientiert sich am CVK-Interface der Firma Fischertechnik. Im Gegensatz zu kommerziellen L{\"o}sungen erlaubt unser Aufbau auch den preiswerten Einsatz in Gruppen- oder Einzelarbeit. Abschließend berichten wir {\"u}ber ein Beispiel aus dem Unterrichtseinsatz.},
  language  = {de}
}
@article{BragardBragard2003,
  author    = {Bragard, Michael and Bragard, G.},
  title     = {Erweiterungen f{\"u}r das CBL2-Messinterface von Texas-Instruments},
  series = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.},
  volume    = {56},
  journal   = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.},
  number    = {2},
  publisher = {Seeberger},
  address   = {Neuss},
  issn      = {0025-5866},
  pages     = {87 -- 88},
  year      = {2003},
  abstract  = {Das von Texas-Instruments (TI) vertriebene Interface CBL2 wird {\"u}ber einige TI-Grafik-Rechner (TI-92, TI-89 usw.) angesteuert. Wegen seiner Handlichkeit wird dieses System beim Unterricht in wechselnden R{\"a}umen »großen« Messwerterfassungssystemen oft vorgezogen. Das CBL2 bietet drei analoge Eing{\"a}nge, die immerhin mit 10 Bit Aufl{\"o}sung und bis zu einer Frequenz von 50 kHz arbeiten. Weiterhin besitzt das CBL2 eine Buchse f{\"u}r angeblich nur einen digitalen Ein- bzw. Ausgang. An diesem Eingang wird standardm{\"a}ßig haupts{\"a}chlich der Bewegungssensor CBR betrieben. In diesem Beitrag werden Erweiterungsm{\"o}glichkeiten dieses Anschlusses beschrieben.},
  language  = {de}
}
@article{KoellenspergerBragardPlumetal.2009,
  author    = {K{\"o}llensperger, P. and Bragard, Michael and Plum, T. and De Doncker, R. W.},
  title     = {The dual GCT : new high-power device using optimized GCT technology},
  series = {IEEE transactions on industry applications},
  volume    = {45},
  journal   = {IEEE transactions on industry applications},
  number    = {5},
  issn      = {0093-9994},
  doi       = {10.1109/TIA.2009.2027364},
  pages     = {1754 -- 1762},
  year      = {2009},
  language  = {en}
}
@article{BragardSoltauThomasetal.2010,
  author    = {Bragard, Michael and Soltau, N. and Thomas, S. and De Doncker, R. W.},
  title     = {The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems},
  series = {IEEE transactions on power electronics},
  volume    = {25},
  journal   = {IEEE transactions on power electronics},
  number    = {12},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0885-8993},
  doi       = {10.1109/TPEL.2010.2085455},
  pages     = {3049 -- 3056},
  year      = {2010},
  abstract  = {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.},
  language  = {en}
}
@article{BragardConradvanHoeketal.2011,
  author    = {Bragard, Michael and Conrad, M. and van Hoek, H. and De Doncker, R. W.},
  title     = {The integrated emitter turn-off thyristor (IETO) : an innovative thyristor-based high power semiconductor device using MOS assisted turn-off},
  series = {IEEE transactions on industry applications},
  volume    = {47},
  journal   = {IEEE transactions on industry applications},
  number    = {5},
  publisher = {IEEE},
  address   = {New York},
  issn      = {0093-9994},
  doi       = {10.1109/TIA.2011.2161432},
  pages     = {2175 -- 2182},
  year      = {2011},
  language  = {en}
}
@article{WallenbornRitz2014,
  author    = {Wallenborn, Ramona and Ritz, Thomas},
  title     = {Mobilit{\"a}t miteinander teilen : st{\"a}dtisches eCarsharing in einer vernetzten Gesellschaft ; [vernetztes Fahren von morgen]},
  series = {Neue Mobilit{\"a}t : das Magazin vom Bundesverband eMobilit{\"a}t},
  volume    = {5},
  journal   = {Neue Mobilit{\"a}t : das Magazin vom Bundesverband eMobilit{\"a}t},
  number    = {14 (Herbstausg.)},
  publisher = {Bundesverband eMobilit{\"a}t BEM},
  address   = {Berlin},
  issn      = {2191-5636},
  pages     = {92 -- 95},
  year      = {2014},
  language  = {de}
}
@article{BragardRichter2008,
  author    = {Bragard, Michael and Richter, S. A.},
  title     = {LED-Kreisel als Praxis-Booster},
  series = {Elektor : electronics worldwide},
  volume    = {39},
  journal   = {Elektor : electronics worldwide},
  number    = {12},
  issn      = {0932-5468},
  pages     = {16},
  year      = {2008},
  language  = {de}
}
@article{RitzPisarczykSachtlebenetal.2014,
  author    = {Ritz, Thomas and Pisarczyk, Rafael and Sachtleben, Johanna and Leßenich, Nina},
  title     = {Usability Engineering maßgeschneidert : Modellbaukasten zur Entwicklung gebrauchstauglicher mobiler Software},
  series = {Wissenschaft trifft Praxis},
  volume    = {1},
  journal   = {Wissenschaft trifft Praxis},
  number    = {1},
  publisher = {Begleitforschung Mittelstand-Digital c/o WIK-Consult GmbH},
  address   = {Bad Honnef},
  issn      = {2198-8544 (Print)},
  pages     = {79 -- 88},
  year      = {2014},
  language  = {de}
}
@article{WolfAltgen2013,
  author    = {Wolf, Martin and Altgen, Jannik},
  title     = {IT Service Management in der Region Aachen : White Paper},
  pages     = {1 -- 13},
  year      = {2013},
  language  = {de}
}
@article{LeingartnerMaurerFerreinetal.2016,
  author    = {Leingartner, Max and Maurer, Johannes and Ferrein, Alexander and Steinbauer, Gerald},
  title     = {Evaluation of Sensors and Mapping Approaches for Disasters in Tunnels},
  series = {Journal of Field Robotics},
  volume    = {33},
  journal   = {Journal of Field Robotics},
  number    = {8},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1556-4967},
  doi       = {10.1002/rob.21611},
  pages     = {1037 -- 1057},
  year      = {2016},
  abstract  = {Ground or aerial robots equipped with advanced sensing technologies, such as three-dimensional laser scanners and advanced mapping algorithms, are deemed useful as a supporting technology for first responders. A great deal of excellent research in the field exists, but practical applications at real disaster sites are scarce. Many projects concentrate on equipping robots with advanced capabilities, such as autonomous exploration or object manipulation. In spite of this, realistic application areas for such robots are limited to teleoperated reconnaissance or search. In this paper, we investigate how well state-of-the-art and off-the-shelf components and algorithms are suited for reconnaissance in current disaster-relief scenarios. The basic idea is to make use of some of the most common sensors and deploy some widely used algorithms in a disaster situation, and to evaluate how well the components work for these scenarios. We acquired the sensor data from two field experiments, one from a disaster-relief operation in a motorway tunnel, and one from a mapping experiment in a partly closed down motorway tunnel. Based on these data, which we make publicly available, we evaluate state-of-the-art and off-the-shelf mapping approaches. In our analysis, we integrate opinions and replies from first responders as well as from some algorithm developers on the usefulness of the data and the limitations of the deployed approaches, respectively. We discuss the lessons we learned during the two missions. These lessons are interesting for the community working in similar areas of urban search and rescue, particularly reconnaissance and search.},
  language  = {en}
}
@article{HaagZontarSchleupenetal.2014,
  author    = {Haag, S. and Zontar, D. and Schleupen, Josef and M{\"u}ller, T. and Brecher, C.},
  title     = {Chain of refined perception in self-optimizing assembly of micro-optical systems},
  series = {Journal of sensors and sensor systems},
  volume    = {3},
  journal   = {Journal of sensors and sensor systems},
  number    = {1},
  publisher = {Copernicus Publ.},
  address   = {G{\"o}ttingen},
  issn      = {2194-878X},
  doi       = {10.5194/jsss-3-87-2014},
  pages     = {87 -- 95},
  year      = {2014},
  abstract  = {Today, the assembly of laser systems requires a large share of manual operations due to its complexity regarding the optimal alignment of optics. Although the feasibility of automated alignment of laser optics has been shown in research labs, the development effort for the automation of assembly does not meet economic requirements - especially for low-volume laser production. This paper presents a model-based and sensor-integrated assembly execution approach for flexible assembly cells consisting of a macro-positioner covering a large workspace and a compact micromanipulator with camera attached to the positioner. In order to make full use of available models from computer-aided design (CAD) and optical simulation, sensor systems at different levels of accuracy are used for matching perceived information with model data. This approach is named "chain of refined perception", and it allows for automated planning of complex assembly tasks along all major phases of assembly such as collision-free path planning, part feeding, and active and passive alignment. The focus of the paper is put on the in-process image-based metrology and information extraction used for identifying and calibrating local coordinate systems as well as the exploitation of that information for a part feeding process for micro-optics. Results will be presented regarding the processes of automated calibration of the robot camera as well as the local coordinate systems of part feeding area and robot base.},
  language  = {en}
}
@article{KoenigVoelkerWolfetal.2016,
  author    = {K{\"o}nig, Johannes Alexander and V{\"o}lker, Veronika and Wolf, Martin and Schuba, Marko},
  title     = {Gamified Hacking Offence Simulation-based Training (GHOST)},
  series = {Crisis Prevention},
  volume    = {2016},
  journal   = {Crisis Prevention},
  number    = {3},
  publisher = {Beta},
  address   = {Bonn},
  pages     = {44 -- 46},
  year      = {2016},
  language  = {de}
}
@article{FerreinSchifferBooysenetal.2016,
  author    = {Ferrein, Alexander and Schiffer, Stefan and Booysen, T. and Stopforth, R.},
  title     = {Why it is harder to run RoboCup in South Africa: Experiences from German South African collaborations},
  series = {International Journal of Advanced Robotic Systems},
  volume    = {13},
  journal   = {International Journal of Advanced Robotic Systems},
  number    = {5},
  issn      = {1729-8806},
  doi       = {10.1177/1729881416662789},
  pages     = {1 -- 13},
  year      = {2016},
  abstract  = {Robots are widely used as a vehicle to spark interest in science and technology in learners. A number of initiatives focus on this issue, for instance, the Roberta Initiative, the FIRST Lego League, the World Robot Olympiad and RoboCup Junior. Robotic competitions are valuable not only for school learners but also for university students, as the RoboCup initiative shows. Besides technical skills, the students get some project exposure and experience what it means to finish their tasks on time. But qualifying students for future high-tech areas should not only be for students from developed countries. In this article, we present our experiences with research and education in robotics within the RoboCup initiative, in Germany and South Africa; we report on our experiences with trying to get the RoboCup initiative in South Africa going. RoboCup has a huge support base of academic institutions in Germany; this is not the case in South Africa. We present our 'north-south' collaboration initiatives in RoboCup between Germany and South Africa and discuss some of the reasons why we think it is harder to run RoboCup in South Africa.},
  language  = {en}
}
@article{RietschBrunheimOrzadaetal.2019,
  author    = {Rietsch, Stefan H. G. and Brunheim, Sascha and Orzada, Stephan and Voelker, Maximilian N. and Maderwald, Stefan and Bitz, Andreas and Gratz, Marcel and Ladd, Mark E. and Quick, Harald H.},
  title     = {Development and evaluation of a 16-channel receive-only RF coil to improve 7T ultra-high field body MRI with focus on the spine},
  series = {Magnetic Resonance in Medicine},
  journal   = {Magnetic Resonance in Medicine},
  number    = {Early view},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1522-2594},
  doi       = {10.1002/mrm.27731},
  year      = {2019},
  language  = {en}
}
@article{LimpertWiesenFerreinetal.2019,
  author    = {Limpert, Nicolas and Wiesen, Patrick and Ferrein, Alexander and Kallweit, Stephan and Schiffer, Stefan},
  title     = {The ROSIN Project and its Outreach to South Africa},
  series = {R\&D Journal},
  volume    = {35},
  journal   = {R\&D Journal},
  pages     = {1 -- 6},
  year      = {2019},
  language  = {en}
}
@article{FaganBitzBjoerkmanBurtscheretal.2021,
  author    = {Fagan, Andrew J. and Bitz, Andreas and Bj{\"o}rkman-Burtscher, Isabella M. and Collins, Christopher M. and Kimbrell, Vera and Raaijmakers, Alexander J. E.},
  title     = {7T MR Safety},
  series = {Journal of Magnetic Resonance Imaging (JMRI)},
  volume    = {53},
  journal   = {Journal of Magnetic Resonance Imaging (JMRI)},
  number    = {2},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1522-2586},
  doi       = {10.1002/jmri.27319},
  pages     = {333 -- 346},
  year      = {2021},
  language  = {en}
}
@article{SerrorHackHenzeetal.2021,
  author    = {Serror, Martin and Hack, Sacha and Henze, Martin and Schuba, Marko and Wehrle, Klaus},
  title     = {Challenges and Opportunities in Securing the Industrial Internet of Things},
  series = {IEEE Transactions on Industrial Informatics},
  volume    = {17},
  journal   = {IEEE Transactions on Industrial Informatics},
  number    = {5},
  publisher = {IEEE},
  address   = {New York},
  issn      = {1941-0050},
  doi       = {10.1109/TII.2020.3023507},
  pages     = {2985 -- 2996},
  year      = {2021},
  language  = {en}
}
@article{FiedlerLaddClemensetal.2020,
  author    = {Fiedler, Thomas M. and Ladd, Mark E. and Clemens, Markus and Bitz, Andreas},
  title     = {Safety of subjects during radiofrequency exposure in ultra-high-field magnetic resonance imaging},
  series = {IEEE Letters on Electromagnetic Compatibility Practice and Applications},
  volume    = {2},
  journal   = {IEEE Letters on Electromagnetic Compatibility Practice and Applications},
  number    = {3},
  publisher = {IEEE},
  address   = {New York, NY},
  isbn      = {2637-6423},
  doi       = {10.1109/LEMCPA.2020.3029747},
  pages     = {1 -- 8},
  year      = {2020},
  abstract  = {Magnetic resonance imaging (MRI) is one of the most important medical imaging techniques. Since the introduction of MRI in the mid-1980s, there has been a continuous trend toward higher static magnetic fields to obtain i.a. a higher signal-to-noise ratio. The step toward ultra-high-field (UHF) MRI at 7 Tesla and higher, however, creates several challenges regarding the homogeneity of the spin excitation RF transmit field and the RF exposure of the subject. In UHF MRI systems, the wavelength of the RF field is in the range of the diameter of the human body, which can result in inhomogeneous spin excitation and local SAR hotspots. To optimize the homogeneity in a region of interest, UHF MRI systems use parallel transmit systems with multiple transmit antennas and time-dependent modulation of the RF signal in the individual transmit channels. Furthermore, SAR increases with increasing field strength, while the SAR limits remain unchanged. Two different approaches to generate the RF transmit field in UHF systems using antenna arrays close and remote to the body are investigated in this letter. Achievable imaging performance is evaluated compared to typical clinical RF transmit systems at lower field strength. The evaluation has been performed under consideration of RF exposure based on local SAR and tissue temperature. Furthermore, results for thermal dose as an alternative RF exposure metric are presented.},
  language  = {en}
}
@article{HueningBackes2020,
  author    = {H{\"u}ning, Felix and Backes, Andreas},
  title     = {Direct observation of large Barkhausen jump in thin Vicalloy wires},
  series = {IEEE Magnetics Letters},
  volume    = {11},
  journal   = {IEEE Magnetics Letters},
  number    = {Art. 2506504},
  publisher = {IEEE},
  address   = {New York, NY},
  isbn      = {1949-307X},
  doi       = {10.1109/LMAG.2020.3046411},
  pages     = {1 -- 4},
  year      = {2020},
  language  = {en}
}
@article{HarzheimMuehmelHeuermann2021,
  author    = {Harzheim, Thomas and M{\"u}hmel, Marc and Heuermann, Holger},
  title     = {A SFCW harmonic radar system for maritime search and rescue using passive and active tags},
  series = {International Journal of Microwave and Wireless Technologies},
  volume    = {13},
  journal   = {International Journal of Microwave and Wireless Technologies},
  number    = {Special Issue 7},
  publisher = {Cambridge University Press},
  address   = {Cambridge},
  doi       = {10.1017/S1759078721000520},
  pages     = {691 -- 707},
  year      = {2021},
  abstract  = {This paper introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested while attached to life jackets and a small boat. In this demonstration test carried out on the Baltic Sea, the system was able to detect and range the active tags up to a distance of 5800 m using an illumination signal transmit-power of 100 W. Special attention is given to the development, performance, and conceptual differences between passive and active tags used in the system. Guidelines for achieving a high HR dynamic range, including a system components description, are given and a comparison with other HR systems is performed. System integration with a commercial maritime X-band navigation radar is shown to demonstrate a solution for rapid search and rescue response and quick localization.},
  language  = {en}
}
@article{ReinhardtBitzElOuardietal.2007,
  author    = {Reinhardt, T. and Bitz, Andreas and El Ouardi, A. and Streckert, J. and Sommer, A. and Lerchl, A. and Hansen, V.},
  title     = {Exposure set-ups for in vivo experiments using radial waveguides},
  series = {Radiation Protection Dosimetry},
  volume    = {124},
  journal   = {Radiation Protection Dosimetry},
  number    = {1},
  issn      = {1742-3406},
  doi       = {10.1093/rpd/ncm370},
  pages     = {21 -- 26},
  year      = {2007},
  language  = {en}
}
@article{SommerBitzStreckertetal.2007,
  author    = {Sommer, Angela M. and Bitz, Andreas and Streckert, Joachim and Hansen, Volkert W. and Lerchl, Alexander},
  title     = {Lymphoma development in mice chronically exposed to UMTS-modulated radiofrequency electromagnetic fields},
  series = {Radiation Research},
  volume    = {168},
  journal   = {Radiation Research},
  number    = {1},
  issn      = {1938-5404},
  doi       = {10.1667/RR0857.1},
  pages     = {72 -- 80},
  year      = {2007},
  language  = {en}
}
@article{SukhotinaStreckertBitzetal.2006,
  author    = {Sukhotina, Irina and Streckert, Joachim R. and Bitz, Andreas and Hansen, Volkert W. and Lerchl, Alexander},
  title     = {1800 MHz electromagnetic field effects on melatonin release from isolated pineal glands},
  series = {Journal of Pineal Research},
  volume    = {40},
  journal   = {Journal of Pineal Research},
  number    = {1},
  issn      = {1600-079X},
  doi       = {10.1111/j.1600-079X.2005.00284.x},
  pages     = {86 -- 91},
  year      = {2006},
  language  = {en}
}
@article{FrankeStreckertBitzetal.2005,
  author    = {Franke, Helmut and Streckert, Joachim and Bitz, Andreas and Goeke, Johannes and Hansen, Volkert and Ringelstein, E. Bernd and Nattk{\"a}mper, Heiner and Galle, Hans-Joachim and St{\"o}gbauer, Florian},
  title     = {Effects of Universal Mobile Telecommunications System (UMTS) electromagnetic fields on the blood-brain barrier in vitro},
  series = {Radiation Research},
  volume    = {164},
  journal   = {Radiation Research},
  number    = {3},
  issn      = {1938-5404},
  doi       = {10.1667/RR3424.1},
  pages     = {258 -- 269},
  year      = {2005},
  language  = {en}
}
@article{WissenBogdanskiScheeretal.2005,
  author    = {Wissen, M. and Bogdanski, N. and Scheer, H.-C. and Bitz, Andreas and Ahrens, G. and Gruetzner, G.},
  title     = {Implication of the light polarisation for UV curing of pre-patterned resists},
  series = {Microelectronic Engineering},
  volume    = {78-79},
  journal   = {Microelectronic Engineering},
  issn      = {0167-9317},
  doi       = {10.1016/j.mee.2004.12.099},
  pages     = {659 -- 664},
  year      = {2005},
  language  = {en}
}
@article{NdoumbeMbonjoMbonjoStreckertBitzetal.2004,
  author    = {Ndoumb{\`e} Mbonjo Mbonjo, H. and Streckert, J. and Bitz, Andreas and Hansen, V. and Glasmachers, A. and Gencol, S. and Rozic, D.},
  title     = {Generic UMTS test signal for RF bioelectromagnetic studies},
  series = {Bioelectromagnetics},
  volume    = {25},
  journal   = {Bioelectromagnetics},
  number    = {6},
  issn      = {1521-186X},
  doi       = {10.1002/bem.20007},
  pages     = {415 -- 425},
  year      = {2004},
  language  = {en}
}
@article{SommerStreckertBitzetal.2004,
  author    = {Sommer, Angela M. and Streckert, Joachim and Bitz, Andreas and Hansen, Volkert W. and Lerchl, Alexander},
  title     = {No effects of GSM-modulated 900 MHz electromagnetic fields on survival rate and spontaneous development of lymphoma in female AKR/J mice},
  series = {BMC Cancer},
  volume    = {77},
  journal   = {BMC Cancer},
  number    = {4},
  doi       = {10.1186/1471-2407-4-77},
  year      = {2004},
  language  = {en}
}
@article{HansenBitzStreckert1999,
  author    = {Hansen, Volkert W. and Bitz, Andreas and Streckert, Joachim R.},
  title     = {RF Exposure of Biological Systems in Radial Waveguides},
  series = {IEEE Transactions on Electromagnetic Compatibility},
  volume    = {41},
  journal   = {IEEE Transactions on Electromagnetic Compatibility},
  number    = {4},
  issn      = {1558-187X},
  doi       = {10.1109/15.809852},
  pages     = {487 -- 493},
  year      = {1999},
  language  = {en}
}
@article{OrzadaSolbachGratzetal.2019,
  author    = {Orzada, Stephan and Solbach, Klaus and Gratz, Marcel and Brunheim, Sascha and Fiedler, Thomas M. and Johst, S{\"o}ren and Bitz, Andreas and Shooshtary, Samaneh and Abuelhaija, Asjraf and Voelker, Maximilian N. and Rietsch, Stefan H. G. and Kraff, Oliver and Maderwald, Stefan and Fl{\"o}ser, Martina and Oehmingen, Mark and Quick, Harald H. and Ladd, Mark E.},
  title     = {A 32-channel parallel transmit system add-on for 7T MRI},
  series = {Plos one},
  journal   = {Plos one},
  doi       = {10.1371/journal.pone.0222452},
  year      = {2019},
  language  = {en}
}
@article{HueningDeMatteis2020,
  author    = {H{\"u}ning, Felix and De Matteis, Stefan},
  title     = {Entwicklung eines taktilen HMI f{\"u}r sehbehinderte und blinde Nutzerinnen und Nutzer},
  series = {Blind - sehbehindert},
  volume    = {140},
  journal   = {Blind - sehbehindert},
  number    = {2},
  publisher = {Edition Bentheim},
  address   = {W{\"u}rzburg},
  issn      = {0176-7836},
  pages     = {9 -- 19},
  year      = {2020},
  language  = {de}
}
@article{Koehler2020,
  author    = {K{\"o}hler, Klemens},
  title     = {A conflict theory perspective of IT attacks - consequences for IT security education},
  number    = {Preprint},
  year      = {2020},
  abstract  = {Cyberspace is "the environment formed by physical and non-physical components to store, modify, and exchange data using computer networks" (NATO CCDCOE). Beyond that, it is an environment where people interact. IT attacks are hostile, non-cooperative interactions that can be described with conflict theory. Applying conflict theory to IT security leads to different objectives for end-user education, requiring different formats like agency-based competence developing games.},
  language  = {en}
}
@article{KoehlerWolf2020,
  author    = {K{\"o}hler, Klemens and Wolf, Martin},
  title     = {Organisatorische Maßnahmen zu Erh{\"o}hung der IT Sicherheit - Empfehlungen aus der Perspektive der Konflikttheorie},
  number    = {Preprint},
  year      = {2020},
  abstract  = {Die NATO definiert den Cyberspace als die "Umgebung, die durch physische und nicht-physische Bestandteile zum Speichern, {\"A}ndern, und Austauschen von Daten mit Hilfe von Computer-Netzwerken" [NATO CCDCOE]. Dar{\"u}ber hinaus ist es ein Medium menschlicher Interaktion. IT Angriffe sind feindselige, nichtkooperative Interaktionen, die mittels Konflikttheorie beschrieben werden k{\"o}nnen. Durch die Anwendung dieses Gedankengeb{\"a}udes auf IT Sicherheit von Organisationen k{\"o}nnen eine Reihe von Verbesserungen in Unternehmen identifiziert werden.},
  language  = {de}
}
@article{KoehlerRoepkeWolf2021,
  author    = {K{\"o}hler, Klemens and R{\"o}pke, Ren{\´e} and Wolf, Martin},
  title     = {Through a mirror darkly - On the obscurity of teaching goals in game-based learning in IT security},
  series = {ISAGA 2019: Simulation Gaming Through Times and Disciplines},
  journal   = {ISAGA 2019: Simulation Gaming Through Times and Disciplines},
  publisher = {Springer},
  address   = {Cham},
  doi       = {10.1007/978-3-030-72132-9_6},
  pages     = {61 -- 73},
  year      = {2021},
  abstract  = {Teachers and instructors use very specific language communicating teaching goals. The most widely used frameworks of common reference are the Bloom's Taxonomy and the Revised Bloom's Taxonomy. The latter provides distinction of 209 different teaching goals which are connected to methods. In Competence Developing Games (CDGs - serious games to convey knowledge) and in IT security education, a two- or three level typology exists, reducing possible learning outcomes to awareness, training, and education. This study explores whether this much simpler framework succeeds in achieving the same range of learning outcomes. Method wise a keyword analysis was conducted. The results were threefold: 1. The words used to describe teaching goals in CDGs on IT security education do not reflect the whole range of learning outcomes. 2. The word choice is nevertheless different from common language, indicating an intentional use of language. 3. IT security CDGs use different sets of terms to describe learning outcomes, depending on whether they are awareness, training, or education games. The interpretation of the findings is that the reduction to just three types of CDGs reduces the capacity to communicate and think about learning outcomes and consequently reduces the outcomes that are intentionally achieved.},
  language  = {en}
}
@article{LeiseEsserEichenlaubetal.2021,
  author    = {Leise, Philipp and Eßer, Arved and Eichenlaub, Tobias and Schleiffer, Jean-Eric and Altherr, Lena and Rinderknecht, Stephan and Pelz, Peter F.},
  title     = {Sustainable system design of electric powertrains - comparison of optimization methods},
  series = {Engineering Optimization},
  journal   = {Engineering Optimization},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {0305-215X},
  doi       = {10.1080/0305215X.2021.1928660},
  year      = {2021},
  abstract  = {The transition within transportation towards battery electric vehicles can lead to a more sustainable future. To account for the development goal 'climate action' stated by the United Nations, it is mandatory, within the conceptual design phase, to derive energy-efficient system designs. One barrier is the uncertainty of the driving behaviour within the usage phase. This uncertainty is often addressed by using a stochastic synthesis process to derive representative driving cycles and by using cycle-based optimization. To deal with this uncertainty, a new approach based on a stochastic optimization program is presented. This leads to an optimization model that is solved with an exact solver. It is compared to a system design approach based on driving cycles and a genetic algorithm solver. Both approaches are applied to find efficient electric powertrains with fixed-speed and multi-speed transmissions. Hence, the similarities, differences and respective advantages of each optimization procedure are discussed.},
  language  = {en}
}
@article{AltherrEdererLorenzetal.2014,
  author    = {Altherr, Lena and Ederer, Thorsten and Lorenz, Ulf and Pelz, Peter F. and P{\"o}ttgen, Philipp},
  title     = {Experimental validation of an enhanced system synthesis approach},
  series = {Operations Research Proceedings 2014},
  journal   = {Operations Research Proceedings 2014},
  editor    = {L{\"u}bbecke, Marco and Koster, Arie and Letmathe, Peter and Madlener, Reihard and Peis, Britta and Walther, Grit},
  publisher = {Springer},
  address   = {Basel},
  isbn      = {978-3-319-28695-2},
  doi       = {10.1007/978-3-319-28697-6_1},
  pages     = {6},
  year      = {2014},
  abstract  = {Planning the layout and operation of a technical system is a common task for an engineer. Typically, the workflow is divided into consecutive stages: First, the engineer designs the layout of the system, with the help of his experience or of heuristic methods. Secondly, he finds a control strategy which is often optimized by simulation. This usually results in a good operating of an unquestioned sys- tem topology. In contrast, we apply Operations Research (OR) methods to find a cost-optimal solution for both stages simultaneously via mixed integer program- ming (MILP). Technical Operations Research (TOR) allows one to find a provable global optimal solution within the model formulation. However, the modeling error due to the abstraction of physical reality remains unknown. We address this ubiq- uitous problem of OR methods by comparing our computational results with mea- surements in a test rig. For a practical test case we compute a topology and control strategy via MILP and verify that the objectives are met up to a deviation of 8.7\%.},
  language  = {en}
}
@article{VergePoettgenAltherretal.2016,
  author    = {Verg{\´e}, Angela and P{\"o}ttgen, Philipp and Altherr, Lena and Ederer, Thorsten and Pelz, Peter F.},
  title     = {Lebensdauer als Optimierungsziel: Algorithmische Struktursynthese am Beispiel eines hydrostatischen Getriebes},
  series = {O+P - {\"O}lhydraulik und Pneumatik},
  volume    = {60},
  journal   = {O+P - {\"O}lhydraulik und Pneumatik},
  number    = {1-2},
  editor    = {Greuloch, Ivo and Weber, Manfred and Meier, Miles},
  publisher = {Vereinigte Fachverl.},
  address   = {Mainz},
  issn      = {1614-9602},
  pages     = {114 -- 121},
  year      = {2016},
  abstract  = {Verf{\"u}gbarkeit und Nachhaltigkeit sind wichtige Anforderungen bei der Planung langlebiger technischer Systeme. Meist werden bei Lebensdaueroptimierungen lediglich einzelne Komponenten vordefinierter Systeme untersucht. Ob eine optimale Lebensdauer eine g{\"a}nzlich andere Systemvariante bedingt, wird nur selten hinterfragt. Technical Operations Research (TOR) erlaubt es, aus Obermengen technischer Systeme automatisiert die lebensdaueroptimale Systemstruktur auszuw{\"a}hlen. Der Artikel zeigt dies am Beispiel eines hydrostatischen Getriebes.},
  language  = {de}
}
@article{SunAltherrPeietal.2018,
  author    = {Sun, Hui and Altherr, Lena and Pei, Ji and Pelz, Peter F. and Yuan, Shouqi},
  title     = {Optimal booster station design and operation under uncertain load},
  series = {Applied Mechanics and Materials},
  volume    = {885},
  journal   = {Applied Mechanics and Materials},
  publisher = {Trans Tech Publications},
  address   = {B{\"a}ch},
  issn      = {1662-7482},
  doi       = {10.4028/www.scientific.net/AMM.885.102},
  pages     = {102 -- 115},
  year      = {2018},
  abstract  = {Given industrial applications, the costs for the operation and maintenance of a pump system typically far exceed its purchase price. For finding an optimal pump configuration which minimizes not only investment, but life-cycle costs, methods like Technical Operations Research which is based on Mixed-Integer Programming can be applied. However, during the planning phase, the designer is often faced with uncertain input data, e.g. future load demands can only be estimated. In this work, we deal with this uncertainty by developing a chance-constrained two-stage (CCTS) stochastic program. The design and operation of a booster station working under uncertain load demand are optimized to minimize total cost including purchase price, operation cost incurred by energy consumption and penalty cost resulting from water shortage. We find optimized system layouts using a sample average approximation (SAA) algorithm, and analyze the results for different risk levels of water shortage. By adjusting the risk level, the costs and performance range of the system can be balanced, and thus the system's resilience can be engineered},
  language  = {en}
}
@article{AltherrBroetzDietrichetal.2018,
  author    = {Altherr, Lena and Br{\"o}tz, Nicolas and Dietrich, Ingo and Gally, Tristan and Geßner, Felix and Kloberdanz, Hermann and Leise, Philipp and Pelz, Peter Franz and Schlemmer, Pia and Schmitt, Andreas},
  title     = {Resilience in mechanical engineering - a concept for controlling uncertainty during design, production and usage phase of load-carrying structures},
  series = {Applied Mechanics and Materials},
  volume    = {885},
  journal   = {Applied Mechanics and Materials},
  publisher = {Trans Tech Publications},
  address   = {B{\"a}ch},
  isbn      = {1662-7482},
  doi       = {10.4028/www.scientific.net/AMM.885.187},
  pages     = {187 -- 198},
  year      = {2018},
  abstract  = {Resilience as a concept has found its way into different disciplines to describe the ability of an individual or system to withstand and adapt to changes in its environment. In this paper, we provide an overview of the concept in different communities and extend it to the area of mechanical engineering. Furthermore, we present metrics to measure resilience in technical systems and illustrate them by applying them to load-carrying structures. By giving application examples from the Collaborative Research Centre (CRC) 805, we show how the concept of resilience can be used to control uncertainty during different stages of product life.},
  language  = {en}
}
@article{RauschFriesenAltherretal.2018,
  author    = {Rausch, Lea and Friesen, John and Altherr, Lena and Meck, Marvin and Pelz, Peter F.},
  title     = {A holistic concept to design optimal water supply infrastructures for informal settlements using remote sensing data},
  series = {Remote Sensing},
  volume    = {10},
  journal   = {Remote Sensing},
  number    = {2},
  publisher = {MDPI},
  address   = {Basel},
  isbn      = {2072-4292},
  doi       = {10.3390/rs10020216},
  pages     = {1 -- 23},
  year      = {2018},
  abstract  = {Ensuring access to water and sanitation for all is Goal No. 6 of the 17 UN Sustainability Development Goals to transform our world. As one step towards this goal, we present an approach that leverages remote sensing data to plan optimal water supply networks for informal urban settlements. The concept focuses on slums within large urban areas, which are often characterized by a lack of an appropriate water supply. We apply methods of mathematical optimization aiming to find a network describing the optimal supply infrastructure. Hereby, we choose between different decentral and central approaches combining supply by motorized vehicles with supply by pipe systems. For the purposes of illustration, we apply the approach to two small slum clusters in Dhaka and Dar es Salaam. We show our optimization results, which represent the lowest cost water supply systems possible. Additionally, we compare the optimal solutions of the two clusters (also for varying input parameters, such as population densities and slum size development over time) and describe how the result of the optimization depends on the entered remote sensing data.},
  language  = {en}
}
@article{AltherrEdererPfetschetal.2018,
  author    = {Altherr, Lena and Ederer, Thorsten and Pfetsch, Marc E. and Pelz, Peter F.},
  title     = {Maschinelles Design eines optimalen Getriebes},
  series = {ATZ - Automobiltechnische Zeitschrift},
  volume    = {120},
  journal   = {ATZ - Automobiltechnische Zeitschrift},
  number    = {10},
  publisher = {Springer Nature},
  address   = {Cham},
  isbn      = {2192-8800},
  doi       = {10.1007/s35148-018-0131-3},
  pages     = {72 -- 77},
  year      = {2018},
  abstract  = {Nahezu 100.000 denkbare Strukturen kann ein Getriebe bei gleicher Funktion aufweisen - je nach Ganganzahl und gefordertem Freiheitsgrad. Mit dem traditionellen Ansatz bei der Entwicklung, einzelne vielversprechende Systemkonfigurationen manuell zu identifizieren und zu vergleichen, k{\"o}nnen leicht innovative und vor allem kostenminimale L{\"o}sungen {\"u}bersehen werden. Im Rahmen eines Forschungsprojekts hat die TU Darmstadt spezielle Optimierungsmethoden angewendet, um auch bei großen L{\"o}sungsr{\"a}umen zielsicher ein f{\"u}r die individuellen Zielstellungen optimales Layout zu finden.},
  language  = {de}
}