@inproceedings{LindenlaufHoefkenSchuba2015,
  author    = {Lindenlauf, Simon and H{\"o}fken, Hans-Wilhelm and Schuba, Marko},
  title     = {Cold Boot Attacks on DDR2 and DDR3 SDRAM},
  series = {10th International Conference on Availability, Reliability and Security (ARES) 2015},
  booktitle = {10th International Conference on Availability, Reliability and Security (ARES) 2015},
  doi       = {10.1109/ARES.2015.28},
  pages     = {287 -- 292},
  year      = {2015},
  language  = {en}
}
@misc{LindelGreiserWaxmanetal.2012,
  author    = {Lindel, Tomasz Dawid and Greiser, Andreas and Waxman, Patrick and Dietterle, Martin and Seifert, Frank and Fontius, Ulrich and Renz, Wolfgang and Dieringer, Matthias A. and Frauenrath, Tobias and Schulz-Menger, Jeanette and Niendorf, Thoralf and Ittermann, Bernd},
  title     = {Cardiac CINE MRI at 7 T using a transmit array},
  series = {2012 ISMRM Annual Meeting Proceedings},
  journal   = {2012 ISMRM Annual Meeting Proceedings},
  issn      = {1545-4428},
  year      = {2012},
  abstract  = {With its need for high SNR and short acquisition times, Cardiac MRI (CMR) is an intriguing target application for ultrahigh field MRI. Due to the sheer size of the upper torso, however, the known RF issues of 7T MRI are also most prominent in CMR. Recent years brought substantial progress but the full potential of the ultrahigh field for CMR is yet to be exploited. Parallel transmission (pTx) is a promising approach in this context and several groups have already reported B1 shimming for 7T CMR. In such a static pTx application amplitudes and phases of all Tx channels are adjusted individually but otherwise imaging techniques established in current clinical practice 1.5 T and 3 T are applied. More advanced forms of pTx as spatially selective excitation (SSE) using Transmit SENSE promise additional benefits like faster imaging with reduced fields of view or improved SAR control. SSE requires the full dynamic capabilities of pTx, however, and for the majority of today's implemented pTx hardware the internal synchronization of the Tx array does not easily permit external triggering as needed for CMR. Here we report a software solution to this problem and demonstrate the feasibility of CINE CMR at 7 T using a Tx array.},
  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}
}
@inproceedings{LimpertSchifferFerrein2015,
  author    = {Limpert, Nicolas and Schiffer, Stefan and Ferrein, Alexander},
  title     = {A Local Planner for Ackermann-Driven Vehicles in ROS SBPL},
  series = {Proceedings of the International Conference on Pattern Recognition Association of South Africa and Robotics and Mechatronics (PRASA-RobMech), 2015},
  booktitle = {Proceedings of the International Conference on Pattern Recognition Association of South Africa and Robotics and Mechatronics (PRASA-RobMech), 2015},
  doi       = {10.1109/RoboMech.2015.7359518},
  pages     = {172 -- 177},
  year      = {2015},
  language  = {en}
}
@techreport{LessenichRitzWallenborn2014,
  author    = {Leßenich, Nina and Ritz, Thomas and Wallenborn, Ramona},
  title     = {Prototyping zur Verbesserung der Benutzerfreundlichkeit mobiler Software : Potenziale benutzerfreundlicher Software-Entwicklung ; Info-Brosch{\"u}re},
  publisher = {eBusiness-Lotse},
  address   = {Aachen},
  pages     = {7 S. : Ill., graph. Darst.},
  year      = {2014},
  abstract  = {Mobile Anwendungen nehmen mit der Verbreitung von Smartphones zu. Die Akzeptanz der Nutzer bestimmt den Erfolg solcher mobiler Applikationen dabei maßgeblich. Um diese Anerkennung zu schaffen, ist eine m{\"o}glichst hohe Gebrauchstauglichkeit, auch Usability genannt, notwendig. Die Informationsbrosch{\"u}re „Prototyping zur Verbesserung der Benutzerfreundlichkeit mobiler Software" richtet sich an Personen, die an der Gestaltung und entwicklung von (mobiler) Software beteiligt sind. In dieser Brosch{\"u}re werden m{\"o}gliche Potenziale im Bereich einer effizienten und benutzerzentrierten Software-Entwicklung aufgezeigt.},
  language  = {de}
}
@article{LerchlKruegerNiehausetal.2008,
  author    = {Lerchl, Alexander and Kr{\"u}ger, Heike and Niehaus, Michael and Streckert, Joachim R. and Bitz, Andreas and Hansen, Volkert},
  title     = {Effects of mobile phone electromagnetic fields at nonthermal SAR values on melatonin and body weight of Djungarian hamsters (Phodopus sungorus)},
  series = {Journal of Pineal Research},
  volume    = {44},
  journal   = {Journal of Pineal Research},
  number    = {3},
  issn      = {1600-079X},
  doi       = {10.1111/j.1600-079X.2007.00522.x},
  pages     = {267 -- 272},
  year      = {2008},
  language  = {en}
}
@article{LepersRakePuetter1976,
  author    = {Lepers, Heinrich and Rake, H. and P{\"u}tter, L.},
  title     = {Regelung der Qualitaet beim Brennen von Zementklinker},
  series = {Regelungstechnische Praxis : rtp},
  volume    = {18},
  journal   = {Regelungstechnische Praxis : rtp},
  number    = {4},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  issn      = {0340-4730},
  pages     = {87 -- 91},
  year      = {1976},
  language  = {de}
}
@article{LepersRakePuetter1976,
  author    = {Lepers, Heinrich and Rake, H. and P{\"u}tter, L.},
  title     = {Prozeßrechnerautomatisierung von W{\"a}rmeprozessen in der Grundstoffindustrie},
  series = {Industrie-Anzeiger},
  volume    = {98},
  journal   = {Industrie-Anzeiger},
  number    = {17/18},
  publisher = {Konradin},
  address   = {Leinfelden-Echterdingen},
  issn      = {0019-9036},
  pages     = {286 -- 289},
  year      = {1976},
  language  = {de}
}
@article{LepersRakePuetter1976,
  author    = {Lepers, Heinrich and Rake, H. and P{\"u}tter, L.},
  title     = {Prozeßrechnerautomatisierung von W{\"a}rmeprozessen},
  series = {Elektro-Anzeiger},
  volume    = {29},
  journal   = {Elektro-Anzeiger},
  number    = {5},
  publisher = {Konradin},
  address   = {Leinfelden-Echterdingen},
  issn      = {0013-5518},
  pages     = {98 -- 101},
  year      = {1976},
  language  = {de}
}
@article{LepersJaegerPuetter1977,
  author    = {Lepers, Heinrich and J{\"a}ger, G. and P{\"u}tter, L.},
  title     = {Anwendung eines Prozessmodells zur Regelung der Produktqualit{\"a}t bei der Zementklinker-Herstellung / Jaeger, G. ; Lepers, H. Puetter, L. [u.a.]},
  series = {VDI-Berichte (1977)},
  journal   = {VDI-Berichte (1977)},
  pages     = {87 -- 93},
  year      = {1977},
  language  = {de}
}
@article{Lepers1973,
  author    = {Lepers, Heinrich},
  title     = {Fehler bei der Systemanalyse aus stochastisch gest{\"o}rten Sprungantworten},
  series = {Regelungstechnik und Prozeß-Datenverarbeitung},
  volume    = {21},
  journal   = {Regelungstechnik und Prozeß-Datenverarbeitung},
  number    = {7},
  publisher = {De Gruyter},
  address   = {Berlin},
  issn      = {0034-3226},
  doi       = {10.1524/auto.1973.21.112.229},
  pages     = {229 -- 233},
  year      = {1973},
  abstract  = {Es wird von Gleichungen ausgegangen, mit denen die Modellkoeffizienten von Regelstrecken mit Ausgleich aus der gemessenen Sprungantwort ermittelt werden k{\"o}nnen. Die {\"U}bertragungsfunktion der Regelstrecke hat einen konstanten Z{\"a}hler und ein Nennerpolynom. Unter der Annahme, daß die ideale und exakte Sprungantwort des Systems durch ein stochastisches Signal gest{\"o}rt wird, wird untersucht, wie die Fehler der ermittelten Modellkoeffizienten von Kennwerten des St{\"o}rsignals und von der Meßzeit f{\"u}r die Sprungantwort abh{\"a}ngen. Durch eine Simulation auf dem Digitalrechner wurden die Ergebnisse kontrolliert. Es zeigt sich, daß durch eine Filterung der gest{\"o}rten Sprungantwort {\"u}ber einen Tiefpaß keine Verbesserung der Analyseergebnisse erreicht werden kann, da das Identifizierungsverfahren eine gl{\"a}ttende Eigenschaft hat.},
  language  = {de}
}
@article{Lepers1972,
  author    = {Lepers, Heinrich},
  title     = {Empfindlichkeitsuntersuchungen zur Beurteilung von Optimierungen mit fehlerhaften Modellen},
  series = {Messen, Steuern, Regeln},
  volume    = {15},
  journal   = {Messen, Steuern, Regeln},
  number    = {11},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  issn      = {0026-0347},
  pages     = {407 -- 410},
  year      = {1972},
  language  = {de}
}
@book{Lepers1971,
  author    = {Lepers, Heinrich},
  title     = {Identifizierung von stochastisch gest{\"o}rten Regelstrecken mit aperiodischen Testsignalen},
  pages     = {115 S.},
  year      = {1971},
  language  = {de}
}
@book{Lepers2005,
  author    = {Lepers, Heinrich},
  title     = {SPS-Programmierung nach IEC 61131-3: mit Beispielen CoDeSys und STEP 7 ; [auf 3 CD-ROMs Installationssoftware f{\"u}r CoDeSys und STEP 7 mit CFC, alle Beispiele aus dem Buch f{\"u}r CoDeSys und STEP 7, alle L{\"o}sungen zu den {\"U}bungsprojekten f{\"u}r CoDeSys und STEP 7]},
  publisher = {Franzis},
  address   = {Poing},
  isbn      = {3-7723-5801-2},
  pages     = {350 S.; Ill., graph. Darst.},
  year      = {2005},
  language  = {de}
}
@article{Lepers1972,
  author    = {Lepers, Heinrich},
  title     = {Integrationsverfahren zur Systemidentifizierung aus gemessenen Systemantworten},
  series = {Regelungstechnik},
  volume    = {20},
  journal   = {Regelungstechnik},
  number    = {10},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  doi       = {10.1524/auto.1972.20.112.417},
  pages     = {417 -- 422},
  year      = {1972},
  abstract  = {F{\"u}r viele Zwecke ist es n{\"u}tzlich, von einem technischen System ein mathematisches Modell zu haben. F{\"u}r Systeme, die sich durch eine Verz{\"o}gerung h{\"o}herer Ordnung mit oder ohne Ausgleich beschreiben lassen, wird ein Identifizierungsverfahren vorgestellt, das aus gemessenen Zeitfunktionen die Bestimmung einer {\"U}bertragungsfunktion erm{\"o}glicht. Die Systeme werden dabei durch Testsignale erregt. Die Modellkoeffizienten werden dann mit Hilfe eines Integrationsverfahrens aus dem Testsignal und der Antwort des Systems auf dieses Testsignal bestimmt. Ein praktisches Beispiel zeigt die Leistungsf{\"a}higkeit des Verfahrens.},
  language  = {de}
}
@book{Lepers2009,
  author    = {Lepers, Heinrich},
  title     = {SPS-Programmierung nach IEC 61131-3 : mit Beispielen f{\"u}r CoDeSys und STEP 7 ; [auf 4 DVDs/CDs: Installationssoftware f{\"u}r CoDeSys, STEP 7 und WINCC flexible ; alle Beispiele aus dem Buch f{\"u}r CoDeSys und STEP7 ; alle L{\"o}sungen zu den {\"U}bungsprojekten f{\"u}r CoDeSys und STEP 7] / Heinrich Lepers . 3. neu bearb. Aufl.},
  publisher = {Franzis},
  address   = {Poing},
  isbn      = {978-3-7723-5806-7},
  pages     = {429 S. : Ill., graph. Darst.},
  year      = {2009},
  language  = {de}
}
@book{Lepers2007,
  author    = {Lepers, Heinrich},
  title     = {SPS-Programmierung nach IEC 61131-3 : mit Beispielen f{\"u}r CoDeSys und STEP 7 / 2. Aufl.},
  publisher = {Franzis},
  address   = {Poing},
  isbn      = {978-3-7723-5805-0},
  pages     = {350 S. : Ill., graph. Darst. + 3 CD-ROMs},
  year      = {2007},
  language  = {de}
}
@inproceedings{LenzWolf2014,
  author    = {Lenz, Laura L. and Wolf, Martin R.},
  title     = {Economic evaluation of serious games with the comparative assessment framework COSEGA},
  series = {The shift from teaching to learning : individual, collective and organizational learning through gaming simulation ; proceedings of the 45th conference of the International Simulation and Gaming Association, Dornbirn 2014},
  booktitle = {The shift from teaching to learning : individual, collective and organizational learning through gaming simulation ; proceedings of the 45th conference of the International Simulation and Gaming Association, Dornbirn 2014},
  editor    = {Kritz, Willy Christian},
  publisher = {Bertelsmann},
  address   = {[Bielefeld]},
  isbn      = {978-3-7639-5422-3},
  pages     = {374 -- 386},
  year      = {2014},
  language  = {en}
}
@inproceedings{LeiseSimonAltherr2020,
  author    = {Leise, Philipp and Simon, Nicolai and Altherr, Lena},
  title     = {Comparison of Piecewise Linearization Techniques to Model Electric Motor Efficiency Maps: A Computational Study},
  series = {Operations Research Proceedings 2019},
  booktitle = {Operations Research Proceedings 2019},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-030-48439-2},
  doi       = {10.1007/978-3-030-48439-2_55},
  pages     = {457 -- 463},
  year      = {2020},
  abstract  = {To maximize the travel distances of battery electric vehicles such as cars or buses for a given amount of stored energy, their powertrains are optimized energetically. One key part within optimization models for electric powertrains is the efficiency map of the electric motor. The underlying function is usually highly nonlinear and nonconvex and leads to major challenges within a global optimization process. To enable faster solution times, one possibility is the usage of piecewise linearization techniques to approximate the nonlinear efficiency map with linear constraints. Therefore, we evaluate the influence of different piecewise linearization modeling techniques on the overall solution process and compare the solution time and accuracy for methods with and without explicitly used binary variables.},
  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}
}