TY - CONF AB - Multi-talker speech and moving speakers still pose a significant challenge to automatic speech recognition systems. Assuming an enrollment utterance of the target speakeris available, the so-called SpeakerBeam concept has been recently proposed to extract the target speaker from a speech mixture. If multi-channel input is available, spatial properties of the speaker can be exploited to support the source extraction. In this contribution we investigate different approaches to exploit such spatial information. In particular, we are interested in the question, how useful this information is if the target speaker changes his/her position. To this end, we present a SpeakerBeam-based source extraction network that is adapted to work on moving speakers by recursively updating the beamformer coefficients. Experimental results are presented on two data sets, one with articially created room impulse responses, and one with real room impulse responses and noise recorded in a conference room. Interestingly, spatial features turn out to be advantageous even if the speaker position changes. AU - Heitkaemper, Jens AU - Feher, Thomas AU - Freitag, Michael AU - Haeb-Umbach, Reinhold ID - 14822 T2 - International Conference on Statistical Language and Speech Processing 2019, Ljubljana, Slovenia TI - A Study on Online Source Extraction in the Presence of Changing Speaker Positions ER - TY - CONF AB - This paper deals with multi-channel speech recognition in scenarios with multiple speakers. Recently, the spectral characteristics of a target speaker, extracted from an adaptation utterance, have been used to guide a neural network mask estimator to focus on that speaker. In this work we present two variants of speakeraware neural networks, which exploit both spectral and spatial information to allow better discrimination between target and interfering speakers. Thus, we introduce either a spatial preprocessing prior to the mask estimation or a spatial plus spectral speaker characterization block whose output is directly fed into the neural mask estimator. The target speaker’s spectral and spatial signature is extracted from an adaptation utterance recorded at the beginning of a session. We further adapt the architecture for low-latency processing by means of block-online beamforming that recursively updates the signal statistics. Experimental results show that the additional spatial information clearly improves source extraction, in particular in the same-gender case, and that our proposal achieves state-of-the-art performance in terms of distortion reduction and recognition accuracy. AU - Martin-Donas, Juan M. AU - Heitkaemper, Jens AU - Haeb-Umbach, Reinhold AU - Gomez, Angel M. AU - Peinado, Antonio M. ID - 14824 T2 - INTERSPEECH 2019, Graz, Austria TI - Multi-Channel Block-Online Source Extraction based on Utterance Adaptation ER - TY - CONF AB - In this paper, we present Hitachi and Paderborn University’s joint effort for automatic speech recognition (ASR) in a dinner party scenario. The main challenges of ASR systems for dinner party recordings obtained by multiple microphone arrays are (1) heavy speech overlaps, (2) severe noise and reverberation, (3) very natural onversational content, and possibly (4) insufficient training data. As an example of a dinner party scenario, we have chosen the data presented during the CHiME-5 speech recognition challenge, where the baseline ASR had a 73.3% word error rate (WER), and even the best performing system at the CHiME-5 challenge had a 46.1% WER. We extensively investigated a combination of the guided source separation-based speech enhancement technique and an already proposed strong ASR backend and found that a tight combination of these techniques provided substantial accuracy improvements. Our final system achieved WERs of 39.94% and 41.64% for the development and evaluation data, respectively, both of which are the best published results for the dataset. We also investigated with additional training data on the official small data in the CHiME-5 corpus to assess the intrinsic difficulty of this ASR task. AU - Kanda, Naoyuki AU - Boeddeker, Christoph AU - Heitkaemper, Jens AU - Fujita, Yusuke AU - Horiguchi, Shota AU - Haeb-Umbach, Reinhold ID - 14826 T2 - INTERSPEECH 2019, Graz, Austria TI - Guided Source Separation Meets a Strong ASR Backend: Hitachi/Paderborn University Joint Investigation for Dinner Party ASR ER - TY - CHAP AU - Seipelt, Agnes Regina AU - Klugseder, Robert ED - Aringer, Klaus ED - Utz, Christian ED - Wozonig, Thomas ID - 14828 SN - 978-3-99012-553-3 T2 - Musik im Zusammenhang: Festschrift Peter Revers zum 65. Geburtstag TI - Digitale Musikanalyse auf Grundlage von MEI-codierten Daten ER - TY - GEN ED - Scheideler, Christian ED - Berenbrink, Petra ID - 14829 SN - 978-1-4503-6184-2 TI - The 31st ACM Symposium on Parallelism in Algorithms and Architectures, SPAA 2019, Phoenix, AZ, USA, June 22-24, 2019 ER - TY - JOUR AU - Gmyr, Robert AU - Lefevre, Jonas AU - Scheideler, Christian ID - 14830 IS - 2 JF - Theory Comput. Syst. TI - Self-Stabilizing Metric Graphs VL - 63 ER - TY - GEN AU - Sabu, Nithin S. ID - 14831 TI - FPGA Acceleration of String Search Techniques in Huge Data Sets ER - TY - THES AU - Vaz, Gavin Francis ID - 14849 TI - Using Just-in-Time Code Generation to Transparently Accelerate Applications in Heterogeneous Systems ER - TY - THES AU - Mäcker, Alexander ID - 14851 TI - On Scheduling with Setup Times ER - TY - CONF AB - In a variety of industrial applications, liquids are atomized to produce aerosols for further processing. Example applications are the coating of surfaces with paints, the application of ultra-thin adhesive layers and the atomization of fuels for the production of combustible dispersions. In this publication different atomizing principles (standing-wave, capillary-wave, vibrating-mesh) are examined and discussed. Using an optimized standing-wave system, tough liquids with viscosities of up to about 100 Pas could be successfully atomized. AU - Dunst, Paul AU - Bornmann, Peter AU - Hemsel, Tobias AU - Littmann, Walter AU - Sextro, Walter ED - Lötters, Joost ED - Urban, Gerald ID - 14852 KW - atomization KW - ultrasound KW - standing-wave KW - capillarywave KW - vibrating-mesh T2 - Conference Proceedings - The 4th Conference on MicroFluidic Handling Systems (MFHS2019) TI - Atomization of Fluids with Ultrasound ER - TY - JOUR AU - Wei, Qunshuo AU - Sain, Basudeb AU - Wang, Yongtian AU - Reineke, Bernhard AU - Li, Xiaowei AU - Huang, Lingling AU - Zentgraf, Thomas ID - 14870 IS - 12 JF - Nano Letters SN - 1530-6984 TI - Simultaneous Spectral and Spatial Modulation for Color Printing and Holography Using All-dielectric Metasurfaces VL - 19 ER - TY - CHAP AU - Kuhlemann, Stefan AU - Sellmann, Meinolf AU - Tierney, Kevin ID - 14890 SN - 0302-9743 T2 - Lecture Notes in Computer Science TI - Exploiting Counterfactuals for Scalable Stochastic Optimization ER - TY - JOUR AU - Dann, Andreas AU - Hermann, Ben AU - Bodden, Eric ID - 14896 JF - IEEE Transactions on Software Engineering SN - 0098-5589 TI - ModGuard: Identifying Integrity &Confidentiality Violations in Java Modules ER - TY - CONF AU - Dann, Andreas AU - Hermann, Ben AU - Bodden, Eric ID - 14897 SN - 9781450367202 T2 - Proceedings of the 8th ACM SIGPLAN International Workshop on State Of the Art in Program Analysis - SOAP 2019 TI - SootDiff: bytecode comparison across different Java compilers ER - TY - CONF AU - Kruger, Stefan AU - Hermann, Ben ID - 14899 SN - 9781728122458 T2 - 2019 IEEE/ACM 2nd International Workshop on Gender Equality in Software Engineering (GE) TI - Can an Online Service Predict Gender? On the State-of-the-Art in Gender Identification from Texts ER - TY - GEN AU - Mair, Christina AU - Scheffler, Wolfram AU - Senger, Isabell AU - Sureth-Sloane, Caren ID - 14902 TI - Analyse der Veränderung der zwischenstaatlichen Gewinnaufteilung bei Einführung einer standardisierten Gewinnverteilungsmethode am Beispiel des Einsatzes von 3D-Druckern VL - 42 ER - TY - JOUR AB - Die Komplexität von Steuersystemen gewinnt in der Debatte um den internationalen Steuerwettbewerb zunehmend an Bedeutung. Im vorliegenden Beitrag erfolgt, basierend auf den Befragungsdaten, die dem Tax Complexity Index von Hoppe et al. (2019) zugrunde liegen, eine umfassende Gegenüberstellung der Komplexität der Steuersysteme von Deutschland und Österreich unter Berücksichtigung der Mittelwerte aller vom Index abgedeckten Länder. Die Steuergesetze weisen sowohl in Deutschland als auch in Österreich einen verhältnismäßig hohen Grad an Komplexität auf. Bei den steuerlichen Rahmenbedingungen fällt der Grad an Komplexität in beiden Ländern dagegen niedrig aus, wobei Österreich im Durchschnitt weniger komplex ist als Deutschland. AU - Hoppe, Thomas AU - Rechbauer, Martina AU - Sturm, Susann ID - 14904 IS - 4 JF - Steuer und Wirtschaft TI - Steuerkomplexität im Vergleich zwischen Deutschland und Österreich - Eine Analyse des Status quo VL - 96 ER - TY - JOUR AB - A key premise underlying most of the economic literature is that rational decision-makers will choose dominant strategies over dominated alternatives. However, prior literature in various disciplines including business, psychology, and economics document a series of phenomena associated with violations of the dominance principle in decision-making. In this comprehensive review, we discuss conditions under which people violate the dominance principle in decision-making. When presenting violations of dominance in empirical and experimental studies, we differentiate between absolute, statewise, and stochastic (first- and second-order) violations of dominance. Furthermore, we categorize the literature by the leading causes for dominance violations: framing, reference points, certainty effects, bounded rationality, and emotional responses. AU - Kourouxous, Thomas AU - Bauer, Thomas ID - 14905 IS - 1 JF - Business Research SN - 2198-3402 TI - Violations of Dominance in Decision-Making VL - 12 ER - TY - GEN AB - This paper introduces an index that captures the complexity of countries’ corporate income tax systems faced by multinational corporations. It is based on surveys of highly experienced tax consultants of the largest international tax services networks. The index, called the Tax Complexity Index (TCI), is composed of a tax code subindex covering tax regulations and a tax framework subindex covering tax processes and features. For a sample of 100 countries for the year 2016, we find that the level of tax complexity varies considerably across countries, while tax code and framework complexity also vary within countries. From a global perspective, tax complexity is strongly driven by the complexity of both transfer pricing regulations in the tax code and tax audits in the tax framework. When analyzing the associations with other country characteristics, we identify different correlation patterns. For example, tax framework complexity is negatively associated with countries’ governance, suggesting that strongly governed countries tend to have less complex tax frameworks, while tax code complexity is positively associated with the statutory tax rate, indicating that high tax countries tend to have more complex tax codes. However, none of the observed associations are very strong. We conclude that tax complexity represents a distinct country characteristic and propose the use of our TCI and its subindices in future research. AU - Hoppe, Thomas AU - Schanz, Deborah AU - Sturm, Susann AU - Sureth-Sloane, Caren ID - 14909 KW - Tax Complexity KW - Tax Index KW - Tax System KW - Multinational Corporations KW - Tax Consultants TI - Measuring Tax Complexity Across Countries: A Survey Study on MNCs ER - TY - JOUR AU - Majdanska, Alicja AU - Wu, Yuchen ID - 14910 IS - 10 JF - Tax Notes International TI - Using Impact Evaluation to Examine Domestic and International Cooperative Compliance Programs VL - 93 ER - TY - JOUR AB - We investigate optical microresonators consisting of either one or two coupled rectangular strips between upper and lower slab waveguides. The cavities are evanescently excited under oblique angles by thin-film guided, in-plane unguided waves supported by one of the slab waveguides. Beyond a specific incidence angle, losses are fully suppressed. The interaction between the guided mode of the cavity-strip and the incoming slab modes leads to resonant behavior for specific incidence angles and gaps. For a single cavity, at resonance, the input power is equally split among each of the four output ports, while for two cavities an add-drop filter can be realized that, at resonance, routes the incoming power completely to the forward drop waveguide via the cavity. For both applications, the strength of the interaction is controlled by the gaps between cavities and waveguides. AU - Ebers, Lena AU - Hammer, Manfred AU - Berkemeier, Manuel B. AU - Menzel, Alexander AU - Förstner, Jens ID - 14990 JF - OSA Continuum KW - tet_topic_waveguides SN - 2578-7519 TI - Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter VL - 2 ER - TY - JOUR AU - Couso, Ines AU - Borgelt, Christian AU - Hüllermeier, Eyke AU - Kruse, Rudolf ID - 15001 JF - IEEE Computational Intelligence Magazine SN - 1556-603X TI - Fuzzy Sets in Data Analysis: From Statistical Foundations to Machine Learning ER - TY - JOUR AB - Many problem settings in machine learning are concerned with the simultaneous prediction of multiple target variables of diverse type. Amongst others, such problem settings arise in multivariate regression, multi-label classification, multi-task learning, dyadic prediction, zero-shot learning, network inference, and matrix completion. These subfields of machine learning are typically studied in isolation, without highlighting or exploring important relationships. In this paper, we present a unifying view on what we call multi-target prediction (MTP) problems and methods. First, we formally discuss commonalities and differences between existing MTP problems. To this end, we introduce a general framework that covers the above subfields as special cases. As a second contribution, we provide a structured overview of MTP methods. This is accomplished by identifying a number of key properties, which distinguish such methods and determine their suitability for different types of problems. Finally, we also discuss a few challenges for future research. AU - Waegeman, Willem AU - Dembczynski, Krzysztof AU - Hüllermeier, Eyke ID - 15002 IS - 2 JF - Data Mining and Knowledge Discovery SN - 1573-756X TI - Multi-target prediction: a unifying view on problems and methods VL - 33 ER - TY - CONF AU - Mortier, Thomas AU - Wydmuch, Marek AU - Dembczynski, Krzysztof AU - Hüllermeier, Eyke AU - Waegeman, Willem ID - 15003 T2 - Proceedings of the 31st Benelux Conference on Artificial Intelligence {(BNAIC} 2019) and the 28th Belgian Dutch Conference on Machine Learning (Benelearn 2019), Brussels, Belgium, November 6-8, 2019 TI - Set-Valued Prediction in Multi-Class Classification ER - TY - CHAP AU - Ahmadi Fahandar, Mohsen AU - Hüllermeier, Eyke ID - 15004 SN - 0302-9743 T2 - Discovery Science TI - Feature Selection for Analogy-Based Learning to Rank ER - TY - CHAP AU - Ahmadi Fahandar, Mohsen AU - Hüllermeier, Eyke ID - 15005 SN - 0302-9743 T2 - KI 2019: Advances in Artificial Intelligence TI - Analogy-Based Preference Learning with Kernels ER - TY - CHAP AU - Nguyen, Vu-Linh AU - Destercke, Sébastien AU - Hüllermeier, Eyke ID - 15006 SN - 0302-9743 T2 - Discovery Science TI - Epistemic Uncertainty Sampling ER - TY - CONF AU - Melnikov, Vitaly AU - Hüllermeier, Eyke ID - 15007 T2 - Proceedings ACML, Asian Conference on Machine Learning (Proceedings of Machine Learning Research, 101) TI - Learning to Aggregate: Tackling the Aggregation/Disaggregation Problem for OWA ER - TY - CONF AU - Epple, Nico AU - Dari, Simone AU - Drees, Ludwig AU - Protschky, Valentin AU - Riener, Andreas ID - 15009 SN - 9781728105604 T2 - 2019 IEEE Intelligent Vehicles Symposium (IV) TI - Influence of Cruise Control on Driver Guidance - a Comparison between System Generations and Countries ER - TY - CONF AU - Tornede, Alexander AU - Wever, Marcel Dominik AU - Hüllermeier, Eyke ED - Hoffmann, Frank ED - Hüllermeier, Eyke ED - Mikut, Ralf ID - 15011 SN - 978-3-7315-0979-0 T2 - Proceedings - 29. Workshop Computational Intelligence, Dortmund, 28. - 29. November 2019 TI - Algorithm Selection as Recommendation: From Collaborative Filtering to Dyad Ranking ER - TY - CONF AU - Brinker, Klaus AU - Hüllermeier, Eyke ID - 15013 T2 - Proceedings ECML/PKDD, European Conference on Machine Learning and Knowledge Discovery in Databases TI - A Reduction of Label Ranking to Multiclass Classification ER - TY - CONF AU - Hüllermeier, Eyke AU - Couso, Ines AU - Diestercke, Sebastian ID - 15014 T2 - Proceedings SUM 2019, International Conference on Scalable Uncertainty Management TI - Learning from Imprecise Data: Adjustments of Optimistic and Pessimistic Variants ER - TY - JOUR AU - Henzgen, Sascha AU - Hüllermeier, Eyke ID - 15015 JF - ACM Transactions on Knowledge Discovery from Data SN - 1556-4681 TI - Mining Rank Data ER - TY - CONF AB - Abstract. Within the scope of this study, an intrinsically lubricated deep drawing die fabricated via laser beam melting (LBM) is investigated. In contrast to the common objective of generating highly dense LBM components, this work endeavors to achieve intended micro-scale porosity. By utilizing permeable structures, in-process closed-loop control of lubrication during the forming operations is feasible. Based on a modified AM scan strategy, the required filigree, porous structures can be generated. Thus, in the present work three permeable specimens are additively generated from the maraging steel 1.2709. The cylindrical specimens are then analyzed via light microscopy (LM), microcomputer tomography (microCT), and with regard to the oil throughput rate. Subsequently, an intrinsically lubricated, AM deep drawing tool die is manufactured and experimentally tested. The findings reveal interesting results for deep drawn specimens with AM deep drawing dies. AU - Bader, Fabian AU - Hengsbach, Florian AU - Hoyer, Kay-Peter AU - Homberg, Werner AU - Schaper, Mirko ID - 15024 T2 - PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019 TI - Intrinsically lubricated tool inserts for deep drawing applications generated by selective laser melting ER - TY - JOUR AB - Friction-spinning is an incremental forming process, which is accompanied by complex thermal and mechanical loads in the tool and the formed part. To influence the process temperature, two main process parameters, i.e. the rotation speed and the feed rate, can be adapted. With the objective to improve the tool performance and the quality of the workpiece, this study focuses on a coating concept for friction-spinning tools made of high speed steel (HS6 5 2C, 1.3343). On the one hand, atmospheric plasma sprayed (APS) Al2O3 and ZrO2-8Y2O3 coatings serve as a thermal insulator, and, on the other hand, physically vapor deposited (PVD) TiAlSi7.9N and CrAlSi7.5N films are applied to increase the hardness and wear resistance of the tools. In addition, duplex coatings, combining the APS and PVD technique, are synthesized to influence both the heat transfer and the tribological properties of friction-spinning tools. Subsequently, all coated tools are tested in a friction-spinning process to form flanges made of AW-6060 (AlMgSi 3.3206) tube materials. The tool temperatures are determined in-situ to investigate the impact of the tool coating on the process temperature. Compared to an uncoated tool, the alumina and zirconia coatings contribute to a reduction of the tool temperature by up to half, while the PVD films increase the hardness of the tool by 20 GPa. Furthermore, it is shown that the surface quality of thermally sprayed (TS) or PVD coated tools is directly related to the surface roughness of the resulting workpiece. AU - Tillmann, Wolfgang AU - Fehr, Alexander AU - Stangier, Dominic AU - Dildrop, Markus AU - Homberg, Werner AU - Lossen, Benjamin AU - Hijazi, Dina ID - 15028 JF - Production Engineering SN - 0944-6524 TI - Al2O3/ZrO2-8Y2O3 and (Cr,Ti)AlSiN tool coatings to influence the temperature and surface quality in friction-spinning processes ER - TY - THES AB - Working-media-based forming processes (WMBF) represent a great potential regarding the production of complex sheet-metal lightweight components with excellent surface quality, shape accuracy and dimensional stability. The working-media-based forming processes characterize the sheet-metal forming process, where the sheet metal blank is formed during the forming process by means of a (quasi-)static or dynamic working media pressure into a contouring forming tool. Although the WMBF offers improved utilization of the formability of the used materials compared to conventional sheet metal forming processes, there are limits in the production of complex deeper or sharp edged components with (quasi-)static and dynamic WMBF processes, which can not be overcome by using these methods alone. In order to overcome this, multi-level WMBF process sequences for components with spherical and stepped geometries are developed in this work. Here the developed strategies combine the advantages of (quasi-)static and dynamic WMBF processes. Furthermore, based on analytical, experimental and numerical investigations, innovative process management strategies were derived, which completely compensate the local wall thickness changes, make better use of existing material resources and thus enable the safe production of mentioned geometries. AU - Djakow, Eugen ID - 15030 KW - High Speed Forming TI - Ein Beitrag zur kombinierten (quasi-)statischen und dynamischen Umformung von blechförmigen Halbzeugen ER - TY - JOUR AU - Linnemann, M. AU - Psyk, V. AU - Djakow, Eugen AU - Springer, R. AU - Homberg, W. AU - Landgrebe, D. ID - 15031 JF - Procedia Manufacturing SN - 2351-9789 TI - High-Speed Incremental Forming – New Technologies For Flexible Production Of Sheet Metal Parts ER - TY - JOUR AU - Piper, M. AU - Zibart, A. AU - Djakow, Eugen AU - Springer, R. AU - Homberg, W. AU - Kenig, E.Y. ID - 15036 JF - Applied Thermal Engineering SN - 1359-4311 TI - Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study ER - TY - CONF AU - Hartel, Rita AU - Dunst, Alexander ID - 15080 SN - 0302-9743 T2 - International Conference on Multimedia Modeling, MMM TI - How Good Is Good Enough? Establishing Quality Thresholds for the Automatic Text Analysis of Retro-Digitized Comics ER - TY - JOUR AU - Bolenz, Lukas AU - Fischer, Florian AU - Toye, Dominique AU - Kenig, Eugeny ID - 15121 JF - Chemie Ingenieur Technik SN - 0009-286X TI - Tomographische Untersuchung der Fluiddynamik viskoser Systeme in Packungskolonnen ER - TY - JOUR AU - Bolenz, Lukas AU - Toye, Dominique AU - Kenig, Eugeny ID - 15123 JF - Chemical Engineering Transactions TI - Liquid Flow Morphology of Viscous Systems in Structured Packings: Investigations by X-ray Tomography VL - 74 ER - TY - GEN AU - Bolenz, Lukas AU - Toye, Dominique AU - Kenig, Eugeny ID - 15125 TI - Tomographische Untersuchung der Fluiddynamik viskoser Systeme in Packungskolonnen ER - TY - GEN AU - Bolenz, Lukas AU - Toye, Dominique AU - Kenig, Eugeny ID - 15126 TI - Experimental and theoretical investigation of fluid dynamics in structured packings ER - TY - GEN AU - Bolenz, Lukas AU - Toye, Dominique AU - Kenig, Eugeny ID - 15128 TI - Liquid Flow Morphology of Viscous Systems in Structured Packings: Investigations by X-ray Tomography ER - TY - GEN AU - Salten, Alexander Heinrich Johannes AU - Maćkowiak, Jan F. AU - Maćkowiak, Jerzy AU - Kenig, Eugeny ID - 15145 TI - Modellierung des Stofftransports in Füllkörperkolonnen mit dem Ansatz der hydrodynamischen Analogien ER - TY - JOUR AU - Rieks, Sebastian AU - Wende, Marc AU - Preußer, Niklas AU - Gambaryan-Roisman, Tatiana AU - Kenig, Eugeny ID - 15148 JF - Chemical Engineering Research and Design SN - 0263-8762 TI - A hydrodynamic analogy based modelling approach for zero-gravity distillation with metal foams VL - 147 ER - TY - GEN AU - Wende, Marc AU - Kenig, Eugeny ID - 15149 T2 - Jahrestreffen der ProcessNet-Fachgruppe Wärme- und Stoffübertragung TI - Modellierungsansatz zur Simulation von Gravidestillation mit Metallschäumen ER - TY - GEN AU - Wende, Marc AU - Staggenborg, Christoph AU - Kenig, Eugeny ID - 15154 T2 - Workshop Wärmeübertragung mit Phasenwechsel in fluiden Systemen: Ein Update TI - Simulation von Gravidestillationsprozessen mit Metallschäumen ER - TY - CONF AU - Feldmann, Nadine AU - Jurgelucks, Benjamin AU - Claes, Leander AU - Henning, Bernd ID - 15164 T2 - 2019 International Congress on Ultrasonics TI - A sensitivity-based optimisation procedure for the characterisation of piezoelectric discs ER - TY - JOUR AU - Jenert, Tobias AU - Brahm, Taiga AU - Naeve-Stoß, Nicole ID - 15173 JF - bwpat TI - Fachbezogene Reflexion in der beruflichen Lehrer*innenbildung VL - 37 ER -