TY - CONF
AU - Böcker, Joachim
ID - 29884
T2 - 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
TI - Analysis of the Magnetic Skin Effekt in Motors and Inductors
ER -
TY - CONF
AU - Sprenger, Alexander
AU - Sadeghi-Kohan, Somayeh
AU - Reimer, Jan Dennis
AU - Hellebrand, Sybille
ID - 19422
T2 - IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFT’20), October 2020
TI - Variation-Aware Test for Logic Interconnects using Neural Networks - A Case Study
ER -
TY - JOUR
AU - Kirchgässner, Wilhelm
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 21250
IS - 7
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
TI - Estimating Electric Motor Temperatures with Deep Residual Machine Learning
VL - 36
ER -
TY - CONF
AB - In this paper, a full-bridge modular multilevel converter (MMC) and two half-bridge-based MMCs are evaluated for high-current low-voltage e.g. 100 - 400V DC-applications such as electrolysis, arc welding or datacenters with DC-power distribution. Usually, modular multilevel converters are used in high-voltage DC-applications (HVDC) in the multiple kV-range, but to meet the needs of a high-current demand at low output voltage levels, the modular converter concept requires adaptations. In the proposed concept, the MMC is used to step-down the three-phase medium-voltage of 10kV, and provide up to 1 MW to the load. Therefore, each module is extended by an LLC resonant converter to adapt to the specific electrolyzers DC-voltage range of 142 - 220V and to provide galvanic isolation. The six-arm MMC converter with half-bridge modules can be simplified and optimized by removing three arms, and thus halving the number of modules. In addition, the module voltage ripple and capacitor losses are decreased by 22% and 30% respectively. By rearranging the components of the half-bridge MMC to build a MMC consisting of grid-side full-bridge modules, the voltage ripple is further reduced by 78% and capacitor losses by 64%, while ensuring identical costs and volume for all MMCs. Finally, the LLC resonant converter is designed for the most efficient full-bridge MMC. The LLC can not operate at resonance with a fixed nominal module voltage of 770V because the output voltage is varying between 142 - 220V. By decreasing the module voltage down to 600V, additional points of operation can be operated in resonance, and the remaining are closer to resonance. The option to decrease the module voltage down to 600V, increases the number of required modules per arm from 12 to 15, which requires to balance the losses of the LLCs and the grid-side stages.
AU - Unruh, Roland
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 29939
KW - Multilevel converters
KW - Resonant converter
KW - High voltage power converters
KW - ZVS Converters
KW - Combination MMC LLC
T2 - 2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)
TI - Evaluation of MMCs for High-Power Low-Voltage DC-Applications in Combination with the Module LLC-Design
ER -
TY - CONF
AU - Rehlaender, Philipp
AU - Tikhonov, Sergey
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 29894
T2 - 2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)
TI - Dual Interleaved 3.6 kW LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode as a Single-Stage Architecture of an Automotive On-Board DC-DC Converter
ER -
TY - JOUR
AU - Brosch, Anian
AU - Hanke, Sören
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 21558
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
TI - Data-Driven Recursive Least Squares Estimation for Model Predictive Current Control of Permanent Magnet Synchronous Motors
ER -
TY - CONF
AU - Stille, Karl Stephan Christian
AU - Weber, Daniel
AU - Lange, Jarren
AU - Vogt, Thorsten
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 29956
T2 - 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
TI - Emulation of Microgrids for Research and Validation of Control and Operation Strategies
ER -
TY - CONF
AB - Automotive DC-DC converters linking the traction battery to the auxiliary battery are characterized by the wide input and output voltage ranges resulting from the varying state-of-charge of the traction and auxiliary battery. The wide voltage transfer ratio needs to be covered for the entire load range conventionally requiring two-stage converter architectures. Considering a less complex single-stage solution potentially enabling cost and weight advantages, traditional LLC converters are unsuitable topologies since it results in a too wide operating frequency range. Most alternative topology candidates show comparable difficulties. To overcome this issue, the gain range of the LLC with full-bridge inverter can be extended by operation in half-bridge mode for low voltage transfer ratios. Phase-shift operation is utilized for intermediate gains and low loads. This paper describes a detailed design methodology for the resonant tank. The experimental results with a peak efficiency of 96.5 % and a power density of 2.1 kW/l prove the proposed concept.
AU - Rehlaender, Philipp
AU - Grote, Tobias
AU - Tikhonov, Sergey
AU - Mario, Schröder
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 29896
T2 - PCIM Europe digital days 2020
TI - A 3,6 kW Single-Stage LLC Converter Operating in Half-Bridge, Full-Bridge and Phase-Shift Mode for Automotive Onboard DC-DC Conversion
ER -
TY - CONF
AB - An onboard DC-DC converter connects the high voltage traction battery to the low voltage auxiliary battery of an EV. It has to provide power across a wide range of input and output voltages. This paper presents the design and evaluation of an economical two-stage converter concept consisting of a first-stage boost converter and a second-stage LLC converter. While for low input voltages, the boost converter can supply the second-stage LLC with the optimum bulk voltage, for high input voltages, the boost converter is turned off and the LLC regulates the output voltage on its own. Whereas this is unproblematic for high output currents, for low loads high switching frequencies become necessary. For this purpose, the LLC needs to be designed for a wide gain range. Traditionally, this is achieved through a small magnetizing inductance resulting in increased conduction losses. If an asymmetric duty cycle operation is used to cover the low gains at low output current, the LLC can be optimized for a better efficiency. A prototype design proves that the asymmetric duty cycle operation is feasible to achieve a wide gain range at a high efficiency whereas the conventional design achieves very poor efficiencies.
AU - Rüschenbaum, Tobias
AU - Rehlaender, Philipp
AU - Ha, Phuong
AU - Grote, Tobias
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 29898
T2 - PCIM Europe digital days 2020
TI - Two-Stage Automotive DC-DC Converter Design with Wide Voltage-Transfer Range Utilizing Asymmetric LLC Operation
ER -
TY - CONF
AB - LLC resonant converters generally employ MOSFETs in the inverter stage, which can be of half-bridge
(HB) or full-bridge (FB) type. The generally weak intrinsic (body) diodes of the MOSFETs cause turn-on
losses when being forced to hard current commutations finally leading to the components self-destruction when operated constantly in this way. Consequently, zero-voltage switching (ZVS) operation is more or less essential in a silicon (Si) MOSFET-based HB or FB. To ensure ZVS, the LLC is operated in the inductive region, i.e. with lagging resonant current. On the contrary, IGBTs show dominant turn-off losses
and therefore are conventionally not applied in LLCs typically requiring high switching frequencies to achieve low output voltages. Yet, if the LLC is intentionally designed for the capacitive region, i. e.
operation with leading current, zero-current switching (ZCS) enabling IGBTs in the inverter stage can be ensured. This paper explores in detail the LLC in the capacitive operating region and gives design considerations for a capacitive LLC utilizing both robust and cost-efficient IGBTs for an exemplary 2.2 kW
automotive on-board DC-DC converter application. The results of a loss analysis show that the LLC resonant converter can be operated well in the capacitive region. In the given case, significantly lower
overall and 30 % lower inverter stage losses are achieved in the thermally relevant worst-case comparison with an inductive LLC based on Si MOSFETs.
AU - Urbaneck, Daniel
AU - Rehlaender, Philipp
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 29874
T2 - PCIM Europe digital days 2020
TI - LLC Converter Design in Capacitive Operation utilizes ZCS for IGBTs – a Concept Study for a 2.2 kW Automotive DC-DC Stage
ER -
TY - JOUR
AU - Stender, Marius
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 30033
IS - 9
JF - IEEE Transactions on Industrial Electronics
KW - Electrical and Electronic Engineering
KW - Control and Systems Engineering
SN - 0278-0046
TI - Comparison of Gray-Box and Black-Box Two-Level Three-Phase Inverter Models for Electrical Drives
VL - 68
ER -
TY - CONF
AU - Stender, Marius
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 30036
T2 - 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
TI - Accurate Torque Estimation for Induction Motors by Utilizing Globally Optimized Flux Observers
ER -
TY - GEN
AB - Micro- and smart grids (MSG) play an important role both for integrating
renewable energy sources in conventional electricity grids and for providing
power supply in remote areas. Modern MSGs are largely driven by power
electronic converters due to their high efficiency and flexibility.
Nevertheless, controlling MSGs is a challenging task due to highest
requirements on energy availability, safety and voltage quality within a wide
range of different MSG topologies. This results in a high demand for
comprehensive testing of new control concepts during their development phase
and comparisons with the state of the art in order to ensure their feasibility.
This applies in particular to data-driven control approaches from the field of
reinforcement learning (RL), whose stability and operating behavior can hardly
be evaluated a priori. Therefore, the OpenModelica Microgrid Gym (OMG) package,
an open-source software toolbox for the simulation and control optimization of
MSGs, is proposed. It is capable of modeling and simulating arbitrary MSG
topologies and offers a Python-based interface for plug \& play controller
testing. In particular, the standardized OpenAI Gym interface allows for easy
RL-based controller integration. Besides the presentation of the OMG toolbox,
application examples are highlighted including safe Bayesian optimization for
low-level controller tuning.
AU - Bode, Henrik
AU - Heid, Stefan
AU - Weber, Daniel
AU - Hüllermeier, Eyke
AU - Wallscheid, Oliver
ID - 21623
T2 - arXiv:2005.04869
TI - Towards a Scalable and Flexible Simulation and Testing Environment
Toolbox for Intelligent Microgrid Control
ER -
TY - GEN
AU - Ficara, Elena
AU - d'Agostini, Franca
ID - 30180
T2 - La Stampa
TI - Perché celebrare Hegel? La sua dialettica è un brand, il suo pensiero una febbre benefica
ER -
TY - GEN
AU - Ficara, Elena
ID - 30164
T2 - Journal of the History of Philosophy
TI - Lebanidze, Giorgi, Hegel’s Transcendental Ontology, New York 2019
ER -
TY - CHAP
AU - Ficara, Elena
ED - Schäfer, R.
ID - 30139
T2 - Die Kategoriendeduktion in der Klassischen Deutschen Philosophie
TI - Was ist die transzendentale Deduktion der Kategorien?
ER -
TY - JOUR
AU - Ficara, Elena
AU - d'Agostini, Franca
ID - 30096
IS - 2
JF - Philosophia
TI - The Blushing Liar
VL - 21
ER -
TY - CHAP
AU - Ficara, Elena
ED - Bouché, Gilles
ID - 30095
T2 - Reading Brandom. On A Spirit of Trust
TI - Truth and Incompatibility
ER -
TY - JOUR
AU - Heid, Stefan
AU - Weber, Daniel
AU - Bode, Henrik
AU - Hüllermeier, Eyke
AU - Wallscheid, Oliver
ID - 29649
IS - 54
JF - Journal of Open Source Software
TI - OMG: A scalable and flexible simulation and testing environment toolbox for intelligent microgrid control
VL - 5
ER -
TY - JOUR
AU - Bode, Henrik
AU - Heid, Stefan
AU - Weber, Daniel
AU - Hüllermeier, Eyke
AU - Wallscheid, Oliver
ID - 29644
JF - arXiv preprint arXiv:2005.04869
TI - Towards a scalable and flexible simulation and testing environment toolbox for intelligent microgrid control
ER -
TY - CONF
AU - Gedlu, Emebet Gebeyehu
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 29641
T2 - The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)
TI - Permanent magnet synchronous machine temperature estimation using low-order lumped-parameter thermal network with extended iron loss model
VL - 2020
ER -
TY - CONF
AU - Illian, Marvin
AU - Althoff, Simon
AU - Karl, Holger
ID - 30211
T2 - 2020 25th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)
TI - A Process to Develop Lean Big-Data Platform Architectures for Industrial Manufacturing Contexts
ER -
TY - JOUR
AU - Wiesenmayer, Sebastian
AU - Heyser, Per
AU - Nehls, Thomas
AU - Frey, Philipp
AU - Flügge, Wilko
AU - Meschut, Gerson
AU - Merklein, Marion
ID - 20354
IS - 10
JF - Werkstattstechnik Online
TI - Berücksichtigung der Herstellungshistorie von Blechbauteilen beim Fügen durch Umformen
VL - 110
ER -
TY - JOUR
AU - Schmitz, Hendrik
AU - Stroka‐Wetsch, Magdalena A.
ID - 30234
IS - 7
JF - Health Economics
KW - Health Policy
SN - 1057-9230
TI - Determinants of nursing home choice: Does reported quality matter?
VL - 29
ER -
TY - JOUR
AU - Schmitz, Hendrik
AU - Stroka‐Wetsch, Magdalena A.
ID - 30233
IS - 7
JF - Health Economics
KW - Health Policy
SN - 1057-9230
TI - Determinants of nursing home choice: Does reported quality matter?
VL - 29
ER -
TY - JOUR
AU - Thommes, Kirsten
AU - Johansson-Pajala, Rose-Marie
AU - Gustaffson, Christine
AU - Pekkarinen, Satu
AU - Tuisku, Outi
AU - Hennala, Lea
AU - Melkas, Helinä
AU - Hoppe, Julia Amelie
ID - 21128
JF - Gerontechnology
SN - 1569-1101
TI - Trust development in care robots by opinion leader in the society
ER -
TY - JOUR
AU - Goldbach, Carina
AU - Hoffmann, Christin
AU - Hoppe, Julia Amelie
AU - Pitz, Thomas
AU - Thommes, Kirsten
ID - 17854
IS - 7
JF - PloS ONE
TI - The fast and the furious—An experimental investigation of the pace of life and risky speed choice in traffic
VL - 15
ER -
TY - JOUR
AU - Hoffmann, Christin
AU - Thommes, Kirsten
ID - 17363
IS - 108984
JF - Economics Letters
TI - Using loss aversion to incentivize energy efficiency in a principal agent context - Evidence from a field experiment
VL - 189
ER -
TY - JOUR
AU - Hoffmann, Christin
AU - Thommes, Kirsten
ID - 17853
JF - Organization & Environment
TI - Combining Egalitarian and Proportional Sharing rules in Team Tournaments to Incentivize Energy-Efficient Behavior in a Principal-Agent Context
ER -
TY - JOUR
AU - Pekkarinen, Satu
AU - Hennala, Lea
AU - Tuisku, Outi
AU - Gustafsson, Christine
AU - Johansson-Pajala, Rose-Marie
AU - Thommes, Kirsten
AU - Hoppe, Julia Amelie
AU - Melkas, Helina
ID - 17857
JF - Futures
TI - Embedding care robots into society and practice: Socio-technical considerations
VL - 122
ER -
TY - CONF
AB - Modern cryptographic protocols, such as TLS 1.3 and QUIC, can send cryptographically protected data in “zero round-trip times (0-RTT)”, that is, without the need for a prior interactive handshake. Such protocols meet the demand for communication with minimal latency, but those currently deployed in practice achieve only rather weak security properties, as they may not achieve forward security for the first transmitted payload message and require additional countermeasures against replay attacks.Recently, 0-RTT protocols with full forward security and replay resilience have been proposed in the academic literature. These are based on puncturable encryption, which uses rather heavy building blocks, such as cryptographic pairings. Some constructions were claimed to have practical efficiency, but it is unclear how they compare concretely to protocols deployed in practice, and we currently do not have any benchmark results that new protocols can be compared with.We provide the first concrete performance analysis of a modern 0-RTT protocol with full forward security, by integrating the Bloom Filter Encryption scheme of Derler et al. (EUROCRYPT 2018) in the Chromium QUIC implementation and comparing it to Google’s original QUIC protocol. We find that for reasonable deployment parameters, the server CPU load increases approximately by a factor of eight and the memory consumption on the server increases significantly, but stays below 400 MB even for medium-scale deployments that handle up to 50K connections per day. The difference of the size of handshake messages is small enough that transmission time on the network is identical, and therefore not significant.We conclude that while current 0-RTT protocols with full forward security come with significant computational overhead, their use in practice is feasible, and may be used in applications where the increased CPU and memory load can be tolerated in exchange for full forward security and replay resilience on the cryptographic protocol level. Our results serve as a first benchmark that can be used to assess the efficiency of 0-RTT protocols potentially developed in the future.
AU - Dallmeier, Fynn
AU - Drees, Jan P.
AU - Gellert, Kai
AU - Handirk, Tobias
AU - Jager, Tibor
AU - Klauke, Jonas
AU - Nachtigall, Simon
AU - Renzelmann, Timo
AU - Wolf, Rudi
ID - 28997
SN - 0302-9743
T2 - Cryptology and Network Security
TI - Forward-Secure 0-RTT Goes Live: Implementation and Performance Analysis in QUIC
ER -
TY - CONF
AU - Ahmmad, Mohsin Ejaz
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 30339
T2 - Proc. IEEE International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM digital days)
TI - Practical Implementation and Verification of Simple-to-Implement Digital Current Observer for Half-Bridge Topologies
ER -
TY - GEN
AU - Schafmeister, Frank
ID - 30362
TI - Apparatus and method for charging an electric battery vehicle
ER -
TY - GEN
AU - Tischendorf, Ricardo
AU - Schmid, Hans-Joachim
AU - Bieber, M.
AU - Reddemann , M.
AU - Kneer, R.
AU - Fröde, F.
AU - Grenga, T.
AU - Pitsch, H.
ID - 25062
TI - Influence of differing nozzle configurations on the final particle characteristics and particle structure evolution in spray flames
ER -
TY - JOUR
AU - Wallscheid, Oliver
AU - Ngoumtsa, Etienne Florian Bouna
ID - 29643
IS - 12
JF - IEEE Transactions on Power Electronics
TI - Investigation of disturbance observers for model predictive current control in electric drives
VL - 35
ER -
TY - JOUR
AU - Hanke, Sören
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 29642
JF - arXiv preprint arXiv:2003.06268
TI - Data Set Description: Identifying the Physics Behind an Electric Motor–Data-Driven Learning of the Electrical Behavior (Part II)
ER -
TY - JOUR
AU - Kirchgässner, Wilhelm
AU - Wallscheid, Oliver
AU - Böcker, Joachim
ID - 29640
JF - arXiv preprint arXiv:2001.06246
TI - Data-Driven Permanent Magnet Temperature Estimation in Synchronous Motors with Supervised Machine Learning
ER -
TY - JOUR
AU - Bielak, Christian Roman
AU - Böhnke, Max
AU - Beck, Robert
AU - Bobbert, Mathias
AU - Meschut, Gerson
ID - 20678
JF - Journal of Advanced Joining Processes.
KW - Clinching
KW - process simulation
KW - FEM
KW - pre-straining
KW - sensitivity analysis
TI - Numerical analysis of the robustness of clinching process considering the pre-forming of the parts
ER -
TY - CHAP
AU - Peckhaus, Volker
ED - Beiderbeck, Friedrich
ED - Li, Wenchao
ED - Waldhoff, Stephan
ID - 17638
T2 - Gottfried Wilhelm Leibniz. Rezeption, Forschung, Ausblick
TI - Logik
ER -
TY - GEN
AU - Peckhaus, Volker
ID - 17752
T2 - Neue Deutsche Biographie
TI - Zermelo
ER -
TY - GEN
AU - Sadeghi-Kohan, Somayeh
AU - Hellebrand, Sybille
ID - 15419
KW - WORKSHOP
TI - Dynamic Multi-Frequency Test Method for Hidden Interconnect Defects
ER -
TY - CONF
AU - zur Heiden, Philipp
ID - 20706
SN - 0302-9743
T2 - Designing for Digital Transformation. Co-Creating Services with Citizens and Industry
TI - Considering Context in Design Science Research: A Systematic Literature Review
ER -
TY - GEN
AU - Peckhaus, Volker
ID - 17816
T2 - Historia Mathematica
TI - Kurt Gödel, Collected Works, Vol. IV: Correspondence A–G, Vol. V: Correspondence H. Ed. by Solomon Feferman et al. Oxford: Clarendon Press 2003
VL - 50
ER -
TY - GEN
AU - Peckhaus, Volker
ID - 17818
T2 - British Journal for the History of Mathematics
TI - The Mathematical World of Charles L. Dodgson (Lewis Carroll). Edited by Robin Wilson and Amirouche Moktefi. Oxford University Press: Oxford 2019
VL - 35
ER -
TY - GEN
AU - Peckhaus, Volker
ID - 17817
T2 - Isis
TI - The Continued Exercise of Reason. Public Addresses by George Boole. Edited by Brendan Dooley. The MIT Press: Cambridge, Mass. and London, Engl. 2018
ER -
TY - CONF
AU - Kastein, Mara
ID - 24454
T2 - Gender and Research
TI - Conference Report on the Digital Congress of the German Sociological Association: ‘Society under Pressure’
ER -
TY - GEN
ED - Alemann, v.Annette
ED - Gruhlich, Julia
ED - Horwath, Ilona
ED - Weber, Lena
ID - 24452
T2 - Gender and Research
TI - The Digitalization of Labour from a Gender Perspective
ER -
TY - CHAP
AU - Peckhaus, Volker
ID - 17895
T2 - Verleihung der Ehrendoktorwürde an Maria von Welser durch die Fakultät für Kulturwissenschaften der Universität Paderborn am 14. November 2019
TI - Grußwort
VL - 155
ER -
TY - JOUR
AU - Otroshi, Mortaza
AU - Rossel, Moritz
AU - Meschut, Gerson
ID - 20143
JF - Journal of Advanced Joining Processes
KW - Self-pierce riveting
KW - Ductile fracture
KW - Damage modeling
KW - GISSMO damage model
TI - Stress state dependent damage modeling of self-pierce riveting process simulation using GISSMO damage model
VL - 1
ER -
TY - GEN
ED - Troschitz, Juliane
ED - Vorderbrüggen, Julian
ED - Kupfer, Robert
ED - Gude, Maik
ED - Meschut, Gerson
ID - 20119
T2 - Applied Sciences
TI - Joining of Thermoplastic Composites with Metals Using Resistance Element Welding
ER -
TY - CONF
AU - Tinkloh, Steffen Rainer
AU - Wu, Tao
AU - Tröster, Thomas
AU - Niendorf, Thomas
ID - 16930
T2 - Proceedings of the 4th International Conference Hybrid 2020 Materials and Structures
TI - Numerical investigation of the hole-drilling method applied to intrinsic manufactured metal-CFRP hybrids
ER -
TY - JOUR
AU - Wu, Tao
AU - Tinkloh, Steffen Rainer
AU - Tröster, Thomas
AU - Zinn, Wolfgang
AU - Niendorf, Thomas
ID - 20842
JF - Journal of Composites Science
SN - 2504-477X
TI - Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method
ER -
TY - THES
AU - Vogt, T.
ID - 30853
TI - Multikriterielle Betriebsstrategien industrieller Microgrids
ER -
TY - JOUR
AU - Lammer, Christina
ID - 30874
IS - 3
JF - Internationale Neerlandistiek
TI - De vriend, de wetenschapper: spanningsvelden in Yra van Dijks monografie over Arnon Grunberg
VL - 58
ER -
TY - JOUR
AU - Lammer, Christina
AU - Scharlau, Ingrid
ID - 30958
JF - Paderborner Universitätszeitschrift
TI - Herausforderungen für die Chancengleichheit. Online-Mentoring für Studentinnen der Universität Paderborn
ER -
TY - CHAP
AU - Willeke, Stephanie
ID - 31772
T2 - Germanistik. Internationales Referatenorgan mit bibliographischen Hinweisen 61 (H. 1-2)
TI - Kurzreferat über: Lungershausen, Gerrit: Weltkrieg mit Worten. Kriegsprosa im Dritten Reich 1933 bis 1940. Wiesbaden: J.B. Metzler 2017
ER -
TY - CHAP
AU - Willeke, Stephanie
ED - Gansel, Carsten
ID - 31737
T2 - Trauma-Erfahrungen und Störungen des ‚Selbst‘. Mediale und literarische Konfigurationen lebensweltlicher Krisen
TI - Der unzuverlässige Zeuge – Störungen im Erinnerungsdiskurs ‚Shoah‘
ER -
TY - CHAP
AU - Willeke, Stephanie
ED - Eke, Norbert Otto
ID - 31732
T2 - Vormärz-Handbuch
TI - Ludwig Tieck
ER -
TY - CHAP
AU - Willeke, Stephanie
ED - Ajouri , Philip
ED - Schneider , Ute
ID - 31731
T2 - Inszenierung des Buchs im Internet (Medium Buch. Wolfenbütteler interdisziplinäre Forschungen)
TI - Der literarische Weblog als digitales Gedächtnismedium – Erinnerungen als Schreib- und Rezeptionspraktiken in Benjamin Steins Turmsegler
VL - 2
ER -
TY - JOUR
AB -
State-of-the-art methods in materials science such as artificial intelligence and data-driven techniques advance the investigation of photovoltaic materials.
AU - Mirhosseini, Hossein AU - Kormath Madam Raghupathy, Ramya AU - Sahoo, Sudhir K. AU - Wiebeler, Hendrik AU - Chugh, Manjusha AU - Kühne, Thomas D. ID - 32246 IS - 46 JF - Physical Chemistry Chemical Physics KW - Physical and Theoretical Chemistry KW - General Physics and Astronomy SN - 1463-9076 TI - In silico investigation of Cu(In,Ga)Se2-based solar cells VL - 22 ER - TY - GEN AB - We consider a resource-aware variant of the classical multi-armed bandit problem: In each round, the learner selects an arm and determines a resource limit. It then observes a corresponding (random) reward, provided the (random) amount of consumed resources remains below the limit. Otherwise, the observation is censored, i.e., no reward is obtained. For this problem setting, we introduce a measure of regret, which incorporates the actual amount of allocated resources of each learning round as well as the optimality of realizable rewards. Thus, to minimize regret, the learner needs to set a resource limit and choose an arm in such a way that the chance to realize a high reward within the predefined resource limit is high, while the resource limit itself should be kept as low as possible. We derive the theoretical lower bound on the cumulative regret and propose a learning algorithm having a regret upper bound that matches the lower bound. In a simulation study, we show that our learning algorithm outperforms straightforward extensions of standard multi-armed bandit algorithms. AU - Bengs, Viktor AU - Hüllermeier, Eyke ID - 32242 T2 - arXiv:2011.00813 TI - Multi-Armed Bandits with Censored Consumption of Resources ER - TY - CHAP AU - Ptashnyk, Stefaniya AU - Bopp, Dominika AU - Roth, Kerstin AU - Theobald, Tina ED - Bopp, Dominika ED - Roth, Kerstin ED - Ptashnyk, Stefaniya ED - Theobald, Tina ID - 32252 T2 - Wörter – Zeichen der Veränderung. Gedenkschrift für Jörg Riecke TI - Einleitung ER - TY - GEN AU - Peckhaus, Volker ID - 18997 T2 - Mathematical Reviews TI - Coury, Aline Germano Foseca; Vilela, Denise Silva, “Russell’s Paradox: A Historical Study About the Paradox in Frege’s Theories”, In: Revista Brasileira de História da Mathématica 19, No. 37, 95–116 ER - TY - GEN AU - Peckhaus, Volker ID - 18995 T2 - Mathematical Reviews TI - Breger, Herbert, "Kontinuum, Analysis, Informales – Beiträge zur Mathematik und Philosophie von Leibniz", hg. v. W. Li, Springer Spektrum: Heidelberg/Berlin 2016 ER - TY - GEN AU - Peckhaus, Volker ID - 18996 T2 - Mathematical Reviews TI - Hanke, Miroslav, “The Probabilistic Logic of Eusebius Amort (1692–1775)”, In: Early Science and Medicine 24 (2019), 186–211 ER - TY - GEN AU - Peckhaus, Volker ID - 29140 T2 - Mathematical Reviews TI - Paakki, Jukka, "Arti Salomaa: Mathematician, Computer Scientist, and Teacher. A Thematic Biography", Springer: Cham 2019 ER - TY - GEN AU - Rink, Lukas Max Johannes ID - 21260 TI - Spillover-Effekte der Sharing Economy ER - TY - GEN AU - Relard, Sebastian ID - 16940 TI - Experimente in der Wirtschaftsinfromatik zu Kreativität - Ein systematischer Literaturüberblick und Implikationen für Geschäftsmodellmodellierungstools ER - TY - GEN AU - Helmert, Manuel Marc ID - 19766 TI - Listen to theier Heart - Ein systematischer Literaturüberblick zur Rolle von Emotionen in nutzergenerierten Inhalten auf digitalen Plattformen ER - TY - GEN AU - Rosenhäger, Tjard Henrik ID - 16571 TI - Nothing comes for free - Ein klassifizierender Überblick zu den Auswirkungen finanzieller Anreize auf digitalen Märkten ER - TY - GEN AU - Zauke, Simon ID - 19651 TI - Stand der Forschung zu gefälschten Online-Bewertungen - Ein systematischer Literaturüberblick ER - TY - GEN AU - Kemadjou, Rostand Ndoumi ID - 16941 TI - Visualisierung von Taxonomien: Ein systematischer Überblick ER - TY - GEN AU - Droste, Jonas ID - 16342 TI - Digital Nudging - Ein systematischer Literaturüberblick ER - TY - GEN AU - Wegener, Maik ID - 15878 TI - Q&A for Products - Eine deskriptive Analyse von Fragen und Antworten auf digitalen Marktplätzen ER - TY - GEN AU - Wolfförster, Lukas ID - 15769 TI - Taxonomie zu Taxonomie-Nutzungsgründen ER - TY - GEN AU - Patzer, Christfof ID - 20790 TI - Entwicklung und Vergleich von Messkriterien anhand statistischer Methoden zur Optimierung der Leistungserbringung im IT-Unternehmen Diebold Nixdorf im Global Service Delivery Management ER - TY - GEN AU - Müller, Michelle ID - 16849 TI - Regiert Geld die AirBnb-Welt? Eine ökonometrische Analyse der Preisreaktionen von sozial- und finanziell motivierten AirBnb-Gastgebern auf politische Restriktionen ER - TY - GEN AU - Dowbysch, Michael ID - 19765 TI - Beziehungen innerhalb und zwischen Geschäftsmodellen: Systematische Analyse durch Geschäftsmodell-Modellierungssprachen ER - TY - GEN AU - Löer, Christin ID - 19439 TI - Fanden Sie diese Bewertung nützlich? Ein Ansatz zur Vorhersage der Nützlichkeit von Online-Bewertungen ER - TY - GEN AU - Philipp, Schumann ID - 15719 TI - Is Delivery Killing Dine-In Restaurants?" - Eine ökonometrische Analyse von Spillover-Effekten für digitale Plattformen in der Restaurantindustrie ER - TY - GEN AU - Kittsteiner, Anna Verena ID - 16343 TI - Eine strategische Analyse von Online-Kundenrezensionen zur Identifikation von Begeisterungsfaktoren mittels Latent Dirichlet Allocation ER - TY - CHAP AB - Formiert sich eine Disziplin „Schreibwissenschaft“? Wir versuchen, die Form, den Gegenstand und mögliche Ziele des Feldes zu beschreiben, aus dem sich aktuell so etwas wie eine Disziplin zu bilden scheint. Nach einer Vergewisserung, was in der Wissenschaftssoziologie überhaupt unter Disziplin verstanden wird, arbeiten wir Spezifika einer Schreibwissenschaft als einer Practical Art heraus und diskutieren dann, welche Türen sich mit der Institutionalisierung einer Disziplin möglicherweise öffnen werden und welche sich vielleicht schließen. AU - Girgensohn, Katrin AU - Haacke, Stefanie AU - Karsten, Andrea ED - Huemer, Birgit ED - Doleschal, Ursula ED - Wiederkehr, Ruth ED - Girgensohn, Katrin ED - Dengscherz, Sabine ED - Brinkschulte, Melanie ED - Mertlitsch, Carmen ID - 32152 SN - 978-3-205-20974-4 T2 - Schreibwissenschaft - eine neue Disziplin: Diskursübergreifende Perspektiven TI - Disziplin Schreibwissenschaft? Kritische Überlegungen zur Entwicklung einer „Practical Art“ VL - 2 ER - TY - CHAP AU - Karsten, Andrea ED - Knaller, Susanne ED - Pany-Habsa, Doris ED - Scholger, Martina ID - 32153 T2 - Schreibforschung interdisziplinär TI - Der Schreibprozess als Dialog. Eine Perspektive am Schnittpunkt von dialogischer Sprachwissenschaft und soziokultureller Psychologie ER -