@article{HartungSchiederKampmannetal.2006, author = {Hartung, Frank and Schieder, Andreas and Kampmann, Markus and Vorwerk, Marc}, title = {Network Supported Media Delivery in Ambient Networks (Netzwerkunterst{\"u}tzte Medienverteilung) / Schieder, Andreas ; Kampmann, Markus ; Hartung, Frank ; Vorwerk, Marc ; Rembarz, Ren{\´e}}, series = {it - Information Technology . 48 (2006), H. 5}, journal = {it - Information Technology . 48 (2006), H. 5}, isbn = {1611-2776}, pages = {264 -- 273}, year = {2006}, language = {en} } @article{HeinrichsUttingFrauenrathetal.2009, author = {Heinrichs, Uwe and Utting, Jane F. and Frauenrath, Tobias and Hezel, Fabian and Krombach, Gabriele A. and Hodenius, Michael A. J. and Kozerke, Sebastian and Niendorf, Thoralf}, title = {Myocardial T2 mapping free of distortion using susceptibility-weighted fast spin-echo imaging: A feasibility study at 1.5 T and 3.0 T}, series = {Magnetic Resonance in Medicine}, volume = {62}, journal = {Magnetic Resonance in Medicine}, number = {3}, publisher = {Wiley-Liss}, address = {New York}, issn = {1522-2594}, doi = {10.1002/mrm.22054}, pages = {822 -- 828}, year = {2009}, abstract = {This study demonstrates the feasibility of applying free-breathing, cardiac-gated, susceptibility-weighted fast spin-echo imaging together with black blood preparation and navigator-gated respiratory motion compensation for anatomically accurate T₂ mapping of the heart. First, T₂ maps are presented for oil phantoms without and with respiratory motion emulation (T₂ = (22.1 ± 1.7) ms at 1.5 T and T₂ = (22.65 ± 0.89) ms at 3.0 T). T₂ relaxometry of a ferrofluid revealed relaxivities of R2 = (477.9 ± 17) mM⁻¹s⁻¹ and R2 = (449.6 ± 13) mM⁻¹s⁻¹ for UFLARE and multiecho gradient-echo imaging at 1.5 T. For inferoseptal myocardial regions mean T₂ values of 29.9 ± 6.6 ms (1.5 T) and 22.3 ± 4.8 ms (3.0 T) were estimated. For posterior myocardial areas close to the vena cava T₂-values of 24.0 ± 6.4 ms (1.5 T) and 15.4 ± 1.8 ms (3.0 T) were observed. The merits and limitations of the proposed approach are discussed and its implications for cardiac and vascular T₂-mapping are considered.}, language = {en} } @article{Heuermann2006, author = {Heuermann, Holger}, title = {Multiport S-parameter calculation from two-port network analyzer measurements with or without switch matrix}, series = {ARFTG Conference, 2006 67th, San Francisco, CA}, journal = {ARFTG Conference, 2006 67th, San Francisco, CA}, isbn = {978-0-7803-9529-9}, pages = {219 -- 222}, year = {2006}, language = {en} } @inproceedings{SchoppHeuermannMarso2017, author = {Schopp, Christoph and Heuermann, Holger and Marso, Michel}, title = {Multiphysical Study of an Atmospheric Microwave Argon Plasma Jet}, series = {IEEE Transactions on Plasma Science}, volume = {45}, booktitle = {IEEE Transactions on Plasma Science}, number = {6}, publisher = {IEEE}, issn = {1939-9375}, doi = {10.1109/TPS.2017.2692735}, pages = {932 -- 937}, year = {2017}, language = {en} } @article{HartungDondetiCastleford2007, author = {Hartung, Frank and Dondeti, L. and Castleford, F.}, title = {Multimedia Internet KEYing (MIKEY) General Extension Payload for Open Mobile Alliance BCAST LTKM/STKM Transport / Dondeti, L. ; Castleford, D. ; Hartung, F.}, pages = {1 -- 7}, year = {2007}, language = {en} } @article{AltherrEdererPoettgenetal.2015, author = {Altherr, Lena and Ederer, Thorsten and P{\"o}ttgen, Philipp and Lorenz, Ulf and Pelz, Peter F.}, title = {Multicriterial optimization of technical systems considering multiple load and availability scenarios}, series = {Applied Mechanics and Materials}, volume = {807}, journal = {Applied Mechanics and Materials}, editor = {Pelz, Peter F. and Groche, Peter}, isbn = {1660-9336}, doi = {10.4028/www.scientific.net/AMM.807.247}, pages = {247 -- 256}, year = {2015}, abstract = {Cheap does not imply cost-effective -- this is rule number one of zeitgeisty system design. The initial investment accounts only for a small portion of the lifecycle costs of a technical system. In fluid systems, about ninety percent of the total costs are caused by other factors like power consumption and maintenance. With modern optimization methods, it is already possible to plan an optimal technical system considering multiple objectives. In this paper, we focus on an often neglected contribution to the lifecycle costs: downtime costs due to spontaneous failures. Consequently, availability becomes an issue.}, language = {en} } @inproceedings{AltherrEdererFarnetaneetal.2017, author = {Altherr, Lena and Ederer, Thorsten and Farnetane, Lucas S. and P{\"o}ttgen, Philipp and Verg{\´e}, Angela and Pelz, Peter F.}, title = {Multicriterial design of a hydrostatic transmission system via mixed-integer programming}, series = {Operations Research Proceedings 2015}, booktitle = {Operations Research Proceedings 2015}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-42901-4}, doi = {10.1007/978-3-319-42902-1_41}, pages = {301 -- 307}, year = {2017}, abstract = {In times of planned obsolescence the demand for sustainability keeps growing. Ideally, a technical system is highly reliable, without failures and down times due to fast wear of single components. At the same time, maintenance should preferably be limited to pre-defined time intervals. Dispersion of load between multiple components can increase a system's reliability and thus its availability inbetween maintenance points. However, this also results in higher investment costs and additional efforts due to higher complexity. Given a specific load profile and resulting wear of components, it is often unclear which system structure is the optimal one. Technical Operations Research (TOR) finds an optimal structure balancing availability and effort. We present our approach by designing a hydrostatic transmission system.}, language = {en} } @inproceedings{MuellerAltherrAholaetal.2019, author = {M{\"u}ller, Tim M. and Altherr, Lena and Ahola, Marja and Schabel, Samuel and Pelz, Peter F.}, title = {Multi-Criteria optimization of pressure screen systems in paper recycling - balancing quality, yield, energy consumption and system complexity}, series = {EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization}, booktitle = {EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization}, editor = {Rodrigues, H. C.}, publisher = {Springer International Publishing}, address = {Basel}, isbn = {978-3-319-97773-7}, doi = {10.1007/978-3-319-97773-7_105}, year = {2019}, abstract = {The paper industry is the industry with the third highest energy consumption in the European Union. Using recycled paper instead of fresh fibers for papermaking is less energy consuming and saves resources. However, adhesive contaminants in recycled paper are particularly problematic since they reduce the quality of the resulting paper-product. To remove as many contaminants and at the same time obtain as many valuable fibres as possible, fine screening systems, consisting of multiple interconnected pressure screens, are used. Choosing the best configuration is a non-trivial task: The screens can be interconnected in several ways, and suitable screen designs as well as operational parameters have to be selected. Additionally, one has to face conflicting objectives. In this paper, we present an approach for the multi-criteria optimization of pressure screen systems based on Mixed-Integer Nonlinear Programming. We specifically focus on a clear representation of the trade-off between different objectives.}, language = {en} } @inproceedings{BuxbaumSchwarteRingbecketal.2002, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten and Grothof, Markus and Luan, Xuming}, title = {MSM-PMD as correlation receiver in a new 3D-ranging system}, series = {Laser radar ranging and atmospheric lidar techniques III : 17 - 18 September 2001, Toulouse, France. - (SPIE proceedings series ; 4546)}, booktitle = {Laser radar ranging and atmospheric lidar techniques III : 17 - 18 September 2001, Toulouse, France. - (SPIE proceedings series ; 4546)}, editor = {Schreiber, Ulrich}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-4271-2}, issn = {0038-7355}, doi = {10.1117/12.453994}, pages = {145 -- 154}, year = {2002}, language = {en} } @article{KraffWredeSchoembergetal.2013, author = {Kraff, Oliver and Wrede, Karsten H. and Schoemberg, Tobias and Dammann, Philipp and Noureddine, Yacine and Orzada, Stephan and Ladd, Mark E. and Bitz, Andreas}, title = {MR safety assessment of potential RF heating from cranial fixation plates at 7 T}, series = {Medical Physics}, volume = {40}, journal = {Medical Physics}, number = {4}, publisher = {Wiley}, address = {Hoboken}, issn = {2473-4209}, doi = {10.1118/1.4795347}, pages = {042302-1 -- 042302-10}, year = {2013}, language = {en} } @incollection{RebelHueningScholletal.2015, author = {Rebel, S{\"o}ren and H{\"u}ning, Felix and Scholl, Ingrid and Ferrein, Alexander}, title = {MQOne: Low-cost design for a rugged-terrain robot platform}, series = {Intelligent robotics and applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II (Lecture notes in computer science : vol. 9245)}, booktitle = {Intelligent robotics and applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II (Lecture notes in computer science : vol. 9245)}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-22875-4 (print) ; 978-3-319-22876-1 (E-Book)}, doi = {10.1007/978-3-319-22876-1_19}, pages = {209 -- 221}, year = {2015}, abstract = {Rugged terrain robot designs are important for field robotics missions. A number of commercial platforms are available, however, at an impressive price. In this paper, we describe the hardware and software component of a low-cost wheeled rugged-terrain robot. The robot is based on an electric children quad bike and is modified to be driven by wire. In terms of climbing properties, operation time and payload it can compete with some of the commercially available platforms, but at a far lower price.}, language = {en} } @inproceedings{BragardHoekHoegenetal.2018, author = {Bragard, Michael and Hoek, Hauke van and Hoegen, Anne von and Doncker, Rik W. De}, title = {Motivation-based Learning: Teaching Fundamentals of Electrical Engineering with an LED Spinning Top}, series = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, booktitle = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, isbn = {978-1-5386-6903-7}, doi = {10.1109/RTUCON.2018.8659810}, pages = {1 -- 6}, year = {2018}, language = {en} } @inproceedings{BindzusBragard2018, author = {Bindzus, Manuel and Bragard, Michael}, title = {Motivating Intuitive Understanding of the Switched Reluctance Machine in the Education of Undergraduate Students}, series = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, booktitle = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, isbn = {978-1-5386-6903-7}, doi = {10.1109/RTUCON.2018.8659870}, pages = {1 -- 6}, year = {2018}, language = {en} } @article{BeckBuchleitnerFerreinetal.2014, author = {Beck, Daniel and Buchleitner, Martin and Ferrein, Alexander and Niem{\"u}ller, Tim and Steinbauer, Gerald}, title = {Mostly Harmless \& AllemaniACs - mixed innovations}, pages = {1 -- 8}, year = {2014}, language = {en} } @article{SammFaissnerMoersetal.1993, author = {Samm, Doris and Faissner, H. and Moers, T. and Priem, R.}, title = {Modular wall-less drift chamber for muon detection at the LHC / H. Faissner, Th. Moers, R. Priem, ... , D. Samm [u.a.]}, series = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 330 (1993), H. 1-2}, journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 330 (1993), H. 1-2}, pages = {76 -- 82}, year = {1993}, language = {en} } @article{GraesslRenzHezeletal.2013, author = {Gr{\"a}ßl, Andreas and Renz, Wolfgang and Hezel, Fabian and Dieringer, Matthias A. and Winter, Lukas and {\"O}zerdem, Celal and Rieger, Jan and Kellmann, Peter and Santoro, Davide and Lindel, Tomasz D. and Frauenrath, Tobias and Pfeiffer, Harald and Niendorf, Thoralf}, title = {Modular 32-channel transceiver coil array for cardiac MRI at 7.0T}, series = {Magnetic Resonance in Medicine}, volume = {72}, journal = {Magnetic Resonance in Medicine}, number = {1}, publisher = {Wiley-Liss}, address = {New York}, issn = {1522-2594}, doi = {10.1002/mrm.24903}, pages = {276 -- 290}, year = {2013}, abstract = {Purpose To design and evaluate a modular transceiver coil array with 32 independent channels for cardiac MRI at 7.0T. Methods The modular coil array comprises eight independent building blocks, each containing four transceiver loop elements. Numerical simulations were used for B1+ field homogenization and radiofrequency (RF) safety validation. RF characteristics were examined in a phantom study. The array's suitability for accelerated high spatial resolution two-dimensional (2D) FLASH CINE imaging of the heart was examined in a volunteer study. Results Transmission field adjustments and RF characteristics were found to be suitable for the volunteer study. The signal-to-noise intrinsic to 7.0T together with the coil performance afforded a spatial resolution of 1.1 × 1.1 × 2.5 mm3 for 2D CINE FLASH MRI, which is by a factor of 6 superior to standardized CINE protocols used in clinical practice at 1.5T. The 32-channel transceiver array supports one-dimensional acceleration factors of up to R = 4 without impairing image quality significantly. Conclusion The modular 32-channel transceiver cardiac array supports accelerated and high spatial resolution cardiac MRI. The array is compatible with multichannel transmission and provides a technological basis for future clinical assessment of parallel transmission techniques at 7.0T.}, language = {en} } @article{Ritz2002, author = {Ritz, Thomas}, title = {Modelling Production of personalized information services and their delivery on multiple distribution channels}, series = {Personalization Techniques in Electronic Publishing on the Web. Workshop in the Framework of the 2nd international conference on Adaptive Hypermedia and adaptive web based systems (AH2002) in Malaga (ES)}, journal = {Personalization Techniques in Electronic Publishing on the Web. Workshop in the Framework of the 2nd international conference on Adaptive Hypermedia and adaptive web based systems (AH2002) in Malaga (ES)}, pages = {19 -- 30}, year = {2002}, language = {en} } @article{Ritz2002, author = {Ritz, Thomas}, title = {Modelling mass customization of digital news services}, series = {International journal of e-business strategy management}, volume = {3}, journal = {International journal of e-business strategy management}, number = {3}, year = {2002}, language = {en} } @article{FassbenderBuehler2001, author = {Faßbender, Heinz and B{\"u}hler, Gerhard}, title = {Modelling command and control information systems by UML}, series = {Proceedings of the Information Systems Technology Panel Symposium / Information Management Challenges in Achieving Coalition Interoperability, Mai 2001, Quebec City, Kanada}, journal = {Proceedings of the Information Systems Technology Panel Symposium / Information Management Challenges in Achieving Coalition Interoperability, Mai 2001, Quebec City, Kanada}, pages = {7-1 -- 7-9}, year = {2001}, language = {en} } @article{PrumeFrankenBoettgeretal.2002, author = {Prume, Klaus and Franken, Klaus and B{\"o}ttger, Ulrich and Waser, Rainer}, title = {Modelling and numerical simulation of the electrical, mechanical, and thermal coupled behaviour of Multilayer capacitors (MLCs) / Prume, Klaus ; Franken, Klaus ; B{\"o}ttger, Ulrich ; Waser, Rainer ; Maier, Horst R.}, series = {Journal of the European Ceramic Society. 22 (2002), H. 8}, journal = {Journal of the European Ceramic Society. 22 (2002), H. 8}, isbn = {0955-2219}, pages = {1285 -- 1296}, year = {2002}, language = {en} } @book{Siepmann1997, author = {Siepmann, Thomas}, title = {Modeller for Value Systems}, publisher = {Erasmus Universiteit Rotterdam}, address = {Rotterdam}, year = {1997}, language = {en} } @inproceedings{StenderRitz2003, author = {Stender, Michael and Ritz, Thomas}, title = {Modeling of business-to-business mobile commerce processes}, series = {Electronic proceedings / ICPR 17, 17th International Conference on Production Research [Blacksburg, Virginia, USA, August 3 - 7, 2003]}, booktitle = {Electronic proceedings / ICPR 17, 17th International Conference on Production Research [Blacksburg, Virginia, USA, August 3 - 7, 2003]}, edition = {CD-ROM-Ausg.}, address = {Blacksburg, Va.}, isbn = {0-9721257-3-6}, year = {2003}, language = {en} } @article{RitzStender2006, author = {Ritz, Thomas and Stender, Michael}, title = {Modeling of B2B mobile commerce processes}, series = {International Journal of Production Economics}, volume = {101}, journal = {International Journal of Production Economics}, number = {1}, issn = {0925-5273}, doi = {10.1016/j.ijpe.2005.05.017}, pages = {128 -- 139}, year = {2006}, language = {en} } @inproceedings{NikolovskiLimpertNessauetal.2023, author = {Nikolovski, Gjorgji and Limpert, Nicolas and Nessau, Hendrik and Reke, Michael and Ferrein, Alexander}, title = {Model-predictive control with parallelised optimisation for the navigation of autonomous mining vehicles}, series = {2023 IEEE Intelligent Vehicles Symposium (IV)}, booktitle = {2023 IEEE Intelligent Vehicles Symposium (IV)}, publisher = {IEEE}, isbn = {979-8-3503-4691-6 (Online)}, doi = {10.1109/IV55152.2023.10186806}, pages = {6 Seiten}, year = {2023}, abstract = {The work in modern open-pit and underground mines requires the transportation of large amounts of resources between fixed points. The navigation to these fixed points is a repetitive task that can be automated. The challenge in automating the navigation of vehicles commonly used in mines is the systemic properties of such vehicles. Many mining vehicles, such as the one we have used in the research for this paper, use steering systems with an articulated joint bending the vehicle's drive axis to change its course and a hydraulic drive system to actuate axial drive components or the movements of tippers if available. To address the difficulties of controlling such a vehicle, we present a model-predictive approach for controlling the vehicle. While the control optimisation based on a parallel error minimisation of the predicted state has already been established in the past, we provide insight into the design and implementation of an MPC for an articulated mining vehicle and show the results of real-world experiments in an open-pit mine environment.}, language = {en} } @article{HartungHornHuschkeetal.2007, author = {Hartung, Frank and Horn, Uwe and Huschke, J{\"o}rg and Kampmann, Markus}, title = {Mobile TV Services in 3G Networks / Hartung, Frank ; Horn, Uwe ; Huschke, J{\"o}rg ; Kampmann, Markus ; Lohmar, Thorsten}, series = {KIVS 2007 : Kommunikation in verteilten Systemen : 15. ITG-GI-Fachtagung vom 26. Februar bis 2. M{\"a}rz 2007 in Bern, Schweiz ; Industriebeitr{\"a}ge, Kurzbeitr{\"a}ge und Workshops / T. Braun ... (Hrsg.)}, journal = {KIVS 2007 : Kommunikation in verteilten Systemen : 15. ITG-GI-Fachtagung vom 26. Februar bis 2. M{\"a}rz 2007 in Bern, Schweiz ; Industriebeitr{\"a}ge, Kurzbeitr{\"a}ge und Workshops / T. Braun ... (Hrsg.)}, isbn = {978-3-8007-2980-7}, pages = {15 -- 18}, year = {2007}, language = {en} } @article{HartungKampmannHornetal.2007, author = {Hartung, Frank and Kampmann, Markus and Horn, Uwe and Kritzner, Jan}, title = {Mobile Television / Hartung, Frank ; Kampmann, Markus ; Horn, Uwe ; Kritzner, Jan}, series = {Encyclopedia of mobile computing and commerce / David Taniar ; Bd. 2 : Mobile ICT - Z}, journal = {Encyclopedia of mobile computing and commerce / David Taniar ; Bd. 2 : Mobile ICT - Z}, publisher = {Information Science Reference}, address = {Hershey}, isbn = {978-1-59904-002-8}, pages = {611 -- 615}, year = {2007}, language = {en} } @article{SchubaWronaZavagli2001, author = {Schuba, Marko and Wrona, Konrad and Zavagli, Guido}, title = {Mobile Payments - State of the Art and Open Problems / Wrona, Konrad ; Schuba, Marko ; Zavagli, Guido}, series = {Electronic commerce : second international workshop ; proceedings / WELCOM 2001, Heidelberg, Germany, November 16-17, 2001. Ludger Fiege ... (ed.)}, journal = {Electronic commerce : second international workshop ; proceedings / WELCOM 2001, Heidelberg, Germany, November 16-17, 2001. Ludger Fiege ... (ed.)}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-42878-7}, pages = {88 -- 100}, year = {2001}, language = {en} } @article{Hartung2003, author = {Hartung, Frank}, title = {Mobile DRM Introduction: The Need for Mobile DRM}, series = {Digital Rights Management : Technological, Economic, Legal and Political Aspects / Becker, Eberhard [u.a.]}, journal = {Digital Rights Management : Technological, Economic, Legal and Political Aspects / Becker, Eberhard [u.a.]}, publisher = {Springer}, address = {Berlin}, pages = {138 -- 149}, year = {2003}, language = {en} } @article{SchubaWrona2000, author = {Schuba, Marko and Wrona, Konrad}, title = {Mobile Chip Electronic Commerce: Enabling Credit Card Payment for Mobile Devices / Schuba, Marko ; Wrona, Konrad}, pages = {1 -- 6}, year = {2000}, language = {en} } @article{HeuermannErkens2007, author = {Heuermann, Holger and Erkens, H.}, title = {Mixed-Mode Chain Scattering Parameters: Theory and Verification}, series = {IEEE Transactions on Microwave Theory and Techniques}, volume = {55}, journal = {IEEE Transactions on Microwave Theory and Techniques}, number = {8}, publisher = {IEEE}, address = {New York}, isbn = {0018-9480}, doi = {10.1109/TMTT.2007.902587}, pages = {1704 -- 1708}, year = {2007}, abstract = {Chain scattering parameters or T-parameters are a useful tool for calculating cascaded two-ports. With the increasing importance of mixed-mode S-parameters, a need for converting the T-parameters from their unbalanced form into a balanced form emerges for suiting both common and differential mode waves, as well as the mode conversion. This paper presents the derivation of the equations for transformations between mixed-mode S- and T-parameters for a mixed-mode two-port. Although derived in a way very similar to monomode T-parameters, no simplifications were necessary. Measurement results exemplify the quality of the T-parameter transformation under real-life conditions.}, language = {en} } @article{OrzadaJohstMaderwaldetal.2013, author = {Orzada, Stephan and Johst, S{\"o}ren and Maderwald, Stefan and Bitz, Andreas and Solbach, Klaus and Ladd, Mark E.}, title = {Mitigation of B1(+) inhomogeneity on single-channel transmit systems with TIAMO}, series = {Magnetic Resonance in Medicine}, volume = {70}, journal = {Magnetic Resonance in Medicine}, number = {1}, publisher = {Wiley}, address = {Weinheim}, issn = {1522-2594}, doi = {10.1002/mrm.24453}, pages = {290 -- 294}, year = {2013}, language = {en} } @article{HueningJaekelFrancoisetal.1996, author = {H{\"u}ning, Felix and Jaekel, C. and Francois, I. and Kyas, G.}, title = {Microwave surface impedance measurements on high-Tc superconductors / Jaekel, C. ; Francois, I. ; Kyas, G. ; H{\"u}ning, F. ; Roskos, H. G. ; Borghs, G. ; Kurz, H.}, series = {Czechoslovak Journal of Physics. 46 (1996), H. Suppl. 2}, journal = {Czechoslovak Journal of Physics. 46 (1996), H. Suppl. 2}, number = {46}, publisher = {Springer Science+Business Media}, address = {Dordrecht}, isbn = {1572-9486}, pages = {1117 -- 1118}, year = {1996}, language = {en} } @article{HeuermannEmmrichBongartz2022, author = {Heuermann, Holger and Emmrich, Thomas and Bongartz, Simon}, title = {Microwave spark plug to support ignitions with high compression ratios}, series = {IEEE Transactions on Plasma Science}, journal = {IEEE Transactions on Plasma Science}, number = {Early Access}, publisher = {IEEE}, issn = {1939-9375}, doi = {10.1109/TPS.2022.3183690}, pages = {1 -- 6}, year = {2022}, abstract = {Upcoming gasoline engines should run with a larger number of fuels beginning from petrol over methanol up to gas by a wide range of compression ratios and a homogeneous charge. In this article, the microwave (MW) spark plug, based on a high-speed frequency hopping system, is introduced as a solution, which can support a nitrogen compression ratio up to 1:39 in a chamber and more. First, an overview of the high-speed frequency hopping MW ignition and operation system as well as the large number of applications are presented. Both gives an understanding of this new base technology for MW plasma generation. Focus of the theoretical part is the explanation of the internal construction of the spark plug, on the achievable of the high voltage generation as well as the high efficiency to hold the plasma. In detail, the development process starting with circuit simulations and ending with the numerical multiphysics field simulations is described. The concept is evaluated with a reference prototype covering the frequency range between 2.40 and 2.48 GHz and working over a large power range from 20 to 200 W. A larger number of different measurements starting by vector hot-S11 measurements and ending by combined working scenarios out of hot temperature, high pressure and charge motion are winding up the article. The limits for the successful pressure tests were given by the pressure chamber. Pressures ranged from 1 to 39 bar and charge motion up to 25 m/s as well as temperatures from 30◦ to 125◦.}, language = {en} } @incollection{HeuermannFinger2014, author = {Heuermann, Holger and Finger, Torsten}, title = {Microwave Spark Plug for Very High-Pressure Conditions}, series = {Ignition systems for gasoline engines}, booktitle = {Ignition systems for gasoline engines}, editor = {G{\"u}nther, Michael}, publisher = {DCM Druck}, address = {Meckenheim}, pages = {269 -- 282}, year = {2014}, language = {en} } @article{Heuermann1997, author = {Heuermann, Holger}, title = {Microwave On-Wafer Measurements with Activ Needle Probe Tips}, pages = {208 -- 214}, year = {1997}, language = {en} } @inproceedings{SchollBartellaMoluluoetal.2019, author = {Scholl, Ingrid and Bartella, Alex and Moluluo, Cem and Ertural, Berat and Laing, Frederic and Suder, Sebastian}, title = {MedicVR : Acceleration and Enhancement Techniques for Direct Volume Rendering in Virtual Reality}, series = {Bildverarbeitung f{\"u}r die Medizin 2019 : Algorithmen - Systeme - Anwendungen}, booktitle = {Bildverarbeitung f{\"u}r die Medizin 2019 : Algorithmen - Systeme - Anwendungen}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-25326-4}, doi = {10.1007/978-3-658-25326-4_32}, pages = {152 -- 157}, year = {2019}, language = {en} } @article{HartungKampmann2007, author = {Hartung, Frank and Kampmann, Markus}, title = {Media Delivery Based on Service Aware Transport Overlay Networks / Kampmann, Markus ; Hartung, Frank}, series = {KIVS 2007 : Kommunikation in verteilten Systemen : 15. ITG-GI-Fachtagung vom 26. Februar bis 2. M{\"a}rz 2007 in Bern, Schweiz ; Industriebeitr{\"a}ge, Kurzbeitr{\"a}ge und Workshops / T. Braun ... (Hrsg.)}, journal = {KIVS 2007 : Kommunikation in verteilten Systemen : 15. ITG-GI-Fachtagung vom 26. Februar bis 2. M{\"a}rz 2007 in Bern, Schweiz ; Industriebeitr{\"a}ge, Kurzbeitr{\"a}ge und Workshops / T. Braun ... (Hrsg.)}, isbn = {978-3-8007-2980-7}, pages = {9 -- 10}, year = {2007}, language = {en} } @article{HartungReyMathieuetal.2004, author = {Hartung, Frank and Rey, J. and Mathieu, B. and Lozano, D.}, title = {Media aware overlay routing in Ambient Networks / Rey, J. ; Mathieu, B. ; Lozano, D. ; Herborn, S. ; Ahmed, K. ; Schmid, S. ; Goebbels, S. ; Hartung, F. ; Kampmann, M.}, series = {16th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. Date:11-14 Sept. 2005 ; Vol. 2}, journal = {16th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. Date:11-14 Sept. 2005 ; Vol. 2}, pages = {952 -- 957}, year = {2004}, language = {en} } @article{HagemannWiechert1992, author = {Hagemann, Hans-J{\"u}rgen and Wiechert, D. U.}, title = {Measurements and calculations of the LP01 intensity of SM fibres far off the core. Hagemann, H.-J.; Wiechert, D. U.}, series = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 10 (1992), H. 4}, journal = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 10 (1992), H. 4}, isbn = {0733-8724}, pages = {407 -- 412}, year = {1992}, language = {en} } @article{HartungHornHuschkeetal.2009, author = {Hartung, Frank and Horn, Uwe and Huschke, J{\"o}rg and Kampmann, Markus}, title = {MBMS—IP Multicast/Broadcast in 3G Networks / Hartung, Frank ; Horn, Uwe ; Huschke, J{\"o}rg ; Kampmann, Markus ; Lohmar, Thorsten}, series = {International Journal of Digital Multimedia Broadcasting. 2009 (2009)}, journal = {International Journal of Digital Multimedia Broadcasting. 2009 (2009)}, isbn = {1687-7586}, pages = {1 -- 25}, year = {2009}, language = {en} } @inproceedings{DetertGligorevicHaaketal.2003, author = {Detert, T. and Gligorevic, Snjezana and Haak, W. and Sorger, Ulrich}, title = {Maximum-likelihood channel estimation using the spreading matrix in fast time-variant frequency selective channels}, series = {Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003 : 14 - 17 December 2003, Darmstadt, Germany}, booktitle = {Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2003 : 14 - 17 December 2003, Darmstadt, Germany}, organization = {Institute of Electrical and Electronics Engineers}, isbn = {0-7803-8292-7}, pages = {347 -- 350}, year = {2003}, language = {en} } @article{Ritz2002, author = {Ritz, Thomas}, title = {Mass Customized Production of Information Services - The combination of economies-of-scale with economies-of-scope}, series = {Media firms : structures, operations, and performance ; [World Media Economics Conference, 5th : 2002 : Turku, Finland] / ed. by Robert G. Picard}, journal = {Media firms : structures, operations, and performance ; [World Media Economics Conference, 5th : 2002 : Turku, Finland] / ed. by Robert G. Picard}, publisher = {Erlbaum}, address = {Mahwah, NJ [u.a.]}, isbn = {0-8058-4165-2}, pages = {267 S. : graph. Darst.}, year = {2002}, language = {en} } @book{RitzBenzStender2003, author = {Ritz, Thomas and Benz, Axel and Stender, Michael}, title = {Marktstudie mobile CRM-Systeme}, publisher = {Fraunhofer-IRB-Verl.}, address = {Stuttgart}, isbn = {3-8167-6361-8}, pages = {244 S. : Ill., graph. Darst.}, year = {2003}, language = {en} } @inproceedings{SchuetzBreuerHoefkenetal.2013, author = {Sch{\"u}tz, P. and Breuer, M. and H{\"o}fken, Hans-Wilhelm and Schuba, Marko}, title = {Malware proof on mobile phone exhibits based on GSM/GPRS traces}, series = {The Second International Conference on Cyber Security, Cyber Peacefare and Digital Forensic (CyberSec 2013) : 04.03. - 06.03.2013, Kuala Lumpur, Malaysia}, booktitle = {The Second International Conference on Cyber Security, Cyber Peacefare and Digital Forensic (CyberSec 2013) : 04.03. - 06.03.2013, Kuala Lumpur, Malaysia}, publisher = {The Society of Digital Information and Wireless Communication}, isbn = {978-0-9853483-7-3}, pages = {89 -- 96}, year = {2013}, language = {en} } @inproceedings{CzarneckiWinkelmannSpiliopoulou2011, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Making business systems in the telecommunication industry more customer-oriented}, series = {Information Systems Development : Business Systems and Services: Modeling and Development}, booktitle = {Information Systems Development : Business Systems and Services: Modeling and Development}, editor = {Pokorny, Jaroslav and Repa, Vaclav and Richta, Karel and Wojtkowski, Wita and Linger, Henry and Barry, Chris and Lang, Michael}, publisher = {Springer}, address = {New York}, isbn = {978-1-4419-9645-9 (Print)}, doi = {10.1007/978-1-4419-9790-6_14}, pages = {169 -- 180}, year = {2011}, abstract = {Market changes have forced telecommunication companies to transform their business. Increased competition, short innovation cycles, changed usage patterns, increased customer expectations and cost reduction are the main drivers. Our objective is to analyze to what extend transformation projects have improved the orientation towards the end-customers. Therefore, we selected 38 real-life case studies that are dealing with customer orientation. Our analysis is based on a telecommunication-specific framework that aligns strategy, business processes and information systems. The result of our analysis shows the following: transformation projects that aim to improve the customer orientation are combined with clear goals on costs and revenue of the enterprise. These projects are usually directly linked to the customer touch points, but also to the development and provisioning of products. Furthermore, the analysis shows that customer orientation is not the sole trigger for transformation. There is no one-fits-all solution; rather, improved customer orientation needs aligned changes of business processes as well as information systems related to different parts of the company.}, language = {en} } @article{FassbenderBuehler1999, author = {Faßbender, Heinz and B{\"u}hler, Gerhard}, title = {Making a C2 information system platform independent by using internet and middleware technologies}, series = {Proceedings of the 1999 Command and Control Research and Technology Symposium, Juni 1999, Newport, USA}, journal = {Proceedings of the 1999 Command and Control Research and Technology Symposium, Juni 1999, Newport, USA}, pages = {1 -- 11}, year = {1999}, language = {en} } @article{HueningLukenSchilderetal.2001, author = {H{\"u}ning, Felix and Luken, Heiko and Schilder, Herbert and Eifert, Thomas}, title = {Magnetochemistry: Compounds and Concepts / Lueken, Heiko ; Schilder, Herbert ; Eifert, Thomas ; Handrick, Klaus ; H{\"u}ning, Felix}, series = {Advances in Solid State Physics. 201 (2001)}, journal = {Advances in Solid State Physics. 201 (2001)}, publisher = {-}, pages = {515 -- 532}, year = {2001}, language = {en} } @book{Huening2001, author = {H{\"u}ning, Felix}, title = {Magnetische Eigenschaften niederdimensionaler Chrom-, Ruthenium- und Niobhalogenide}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8265-8551-8}, pages = {II, 122 S Ill., graph. Darst.}, year = {2001}, language = {en} } @inproceedings{NikolovskiRekeElsenetal.2021, author = {Nikolovski, Gjorgji and Reke, Michael and Elsen, Ingo and Schiffer, Stefan}, title = {Machine learning based 3D object detection for navigation in unstructured environments}, series = {2021 IEEE Intelligent Vehicles Symposium Workshops (IV Workshops)}, booktitle = {2021 IEEE Intelligent Vehicles Symposium Workshops (IV Workshops)}, publisher = {IEEE}, isbn = {978-1-6654-7921-9}, doi = {10.1109/IVWorkshops54471.2021.9669218}, pages = {236 -- 242}, year = {2021}, abstract = {In this paper we investigate the use of deep neural networks for 3D object detection in uncommon, unstructured environments such as in an open-pit mine. While neural nets are frequently used for object detection in regular autonomous driving applications, more unusual driving scenarios aside street traffic pose additional challenges. For one, the collection of appropriate data sets to train the networks is an issue. For another, testing the performance of trained networks often requires tailored integration with the particular domain as well. While there exist different solutions for these problems in regular autonomous driving, there are only very few approaches that work for special domains just as well. We address both the challenges above in this work. First, we discuss two possible ways of acquiring data for training and evaluation. That is, we evaluate a semi-automated annotation of recorded LIDAR data and we examine synthetic data generation. Using these datasets we train and test different deep neural network for the task of object detection. Second, we propose a possible integration of a ROS2 detector module for an autonomous driving platform. Finally, we present the performance of three state-of-the-art deep neural networks in the domain of 3D object detection on a synthetic dataset and a smaller one containing a characteristic object from an open-pit mine.}, language = {en} } @incollection{StengerAltherrAbel2019, author = {Stenger, David and Altherr, Lena and Abel, Dirk}, title = {Machine learning and metaheuristics for black-box optimization of product families: a case-study investigating solution quality vs. computational overhead}, series = {Operations Research Proceedings 2018}, booktitle = {Operations Research Proceedings 2018}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-18499-5 (Print)}, doi = {10.1007/978-3-030-18500-8_47}, pages = {379 -- 385}, year = {2019}, abstract = {In product development, numerous design decisions have to be made. Multi-domain virtual prototyping provides a variety of tools to assess technical feasibility of design options, however often requires substantial computational effort for just a single evaluation. A special challenge is therefore the optimal design of product families, which consist of a group of products derived from a common platform. Finding an optimal platform configuration (stating what is shared and what is individually designed for each product) and an optimal design of all products simultaneously leads to a mixed-integer nonlinear black-box optimization model. We present an optimization approach based on metamodels and a metaheuristic. To increase computational efficiency and solution quality, we compare different types of Gaussian process regression metamodels adapted from the domain of machine learning, and combine them with a genetic algorithm. We illustrate our approach on the example of a product family of electrical drives, and investigate the trade-off between solution quality and computational overhead.}, language = {en} }