TY - JOUR AU - Elit, Stefan ID - 31357 JF - Wirkendes Wort TI - Literarisches Wissen vom marxistischen Wissenschaftsbetrieb. Historiographische Ideologiedebatten in Gerti Tetzners „Karen W.“ ER - TY - JOUR AB - The article analyzes the implementation of an online educational module and its impact on the organization of the classroom’s interaction order. The latter is institutionally constrained by the presence of a goal and the distribution of roles between teacher and students. The introduction of a digital learning platform adds a technological context to the institutional setting. The article considers technologies as possessing communicative affordances — opportunities for action made possible or delimited through their use. Technologies bring new interactive resources to the process of ed­ucation and can affect the organization of the classroom’s interaction order. Using multimodal conversation analysis, we analyzed video recordings of the telemediated interaction of Russia-based students and teachers within a gamified online educational module. We investigate a case in which a student’s correct answer is nevertheless corrected by the teacher. We dem­onstrate that the teacher initiates the correction because they are guided by the ordering of the game elements within the interface. Based on a detailed analysis of the teacher’s mouse movement in relation to ongoing turns-at-talk, we show that this orientation is sustained by all participants. The work contributes to classroom interaction studies and affordance theory and develops the methodology of multimodal transcription for mediated contexts. The primary result of the study is an empirical demonstration that the relevance of technological affordances for interactants is situation­ally produced, and that this process is associated with the interweaving of the institutional and technical context of interaction. The conclusion discusses the relationship between affordances and institutional norms. AU - Erofeeva, M.A. AU - Klowait, Nils ID - 42672 IS - 3 JF - Sociology of Power SN - 2074-0492 TI - Dei ex machina: The Interaction Order of Gamified Distance Learning VL - 32 ER - TY - JOUR AU - Weigelt, Matthias AU - Güldenpenning, Iris AU - Steggemann-Weinrich, Yvonne ID - 37789 IS - 10 JF - Psychology KW - General Earth and Planetary Sciences KW - General Environmental Science SN - 2152-7180 TI - The Head-Fake Effect in Basketball Is Based on the Processing of Head Orientation, but Not on Gaze Direction VL - 11 ER - TY - JOUR AU - Friehs, Maximilian A. AU - Güldenpenning, Iris AU - Frings, Christian AU - Weigelt, Matthias ID - 37827 IS - 1 JF - Journal of Cognitive Enhancement KW - General Medicine SN - 2509-3290 TI - Electrify your Game! Anodal tDCS Increases the Resistance to Head Fakes in Basketball VL - 4 ER - TY - JOUR AU - Böhm, Eva AU - Eggert, Andreas AU - Terho, Harri AU - Ulaga, Wolfgang AU - Haas, Alexander ID - 46636 IS - 3 JF - Journal of Personal Selling and Sales Management KW - Management of Technology and Innovation KW - Human Factors and Ergonomics SN - 0885-3134 TI - Drivers and outcomes of salespersons’ value opportunity recognition competence in solution selling VL - 40 ER - TY - JOUR AB - Reactions to the pass of a basketball player performing a head fake are typically slower than reactions to a basketball player who passes without a head fake (i.e., head-fake effect). The present study shows that extensive practice reduces the head-fake effect in basketball. Additional analyses were conducted to explore the mechanism behind the reduced head-fake effect. First, we analyzed whether or not participants developed some control over the processing of irrelevant gaze direction, as indicated by specific trial-to-trial adaptations (i.e., congruency sequence effect). Second, we fitted the individual frequency distributions of RTs to ex-Gaussian distributions, to evaluate if practice specifically affects the Gaussian part of the distribution or the exponential part of the distribution. Third, we modeled individual RT distributions as the so-called mixture effects to examine whether the way irrelevant gaze direction impacts performance (either occasionally but massively or continuously but moderately) changes with practice. The analyses revealed that the effect of practice could not be explained with an increasing congruency-sequence effect. Also, it could not be found in the ex-Gaussian distributional analyses. The assumption that residual failure to inhibit the processing of the gaze direction in contrast to continuous failures to do so might favor mixed effects over uniform effects at later courses of practice could not be validated. The reduced head-fake effect thus is argued to source in participants’ general increasing ability to inhibit the processing of the task-irrelevant gaze direction information and/or in a priority shift of gaze processing to a processing of the pass direction. AU - Güldenpenning, Iris AU - Schütz, Christoph AU - Weigelt, Matthias AU - Kunde, Wilfried ID - 37829 JF - Psychological Research KW - Arts and Humanities (miscellaneous) KW - Developmental and Educational Psychology KW - Experimental and Cognitive Psychology KW - General Medicine SN - 0340-0727 TI - Is the head-fake effect in basketball robust against practice? Analyses of trial-by-trial adaptations, frequency distributions, and mixture effects to evaluate effects of practice VL - 84 ER - TY - JOUR AB - AbstractIn three experiments, we investigated the effect of unconscious social priming on human behavior in a choice reaction time task. Photographs of a basketball player passing a ball to the left/right were used as target stimuli. Participants had to respond to the pass direction either by a whole-body (complex) response or a button-press (simple) response. Visually masked stimuli, showing both a task-relevant cue (pass direction) and a task-irrelevant, social cue (gaze direction), were used as primes. Subliminal social priming was found for kinematic (center of pressure) and chronometric measures (response times): gaze direction in the primes affected responses to the pass direction in the targets. The social priming effect diminished when gaze information was unhelpful or even detrimental to the task. Social priming of a complex behavior does not require awareness or intentionality, indicating automatic processing. Nevertheless, it can be controlled by top-down, strategic processes. AU - Schütz, Christoph AU - Güldenpenning, Iris AU - Koester, Dirk AU - Schack, Thomas ID - 37605 JF - Scientific Reports KW - Multidisciplinary SN - 2045-2322 TI - Social cues can impact complex behavior unconsciously VL - 10 ER - TY - JOUR AU - Güldenpenning, Iris AU - Kunde, Wilfried AU - Weigelt, Matthias ID - 37760 IS - 1 JF - International Journal of Sport and Exercise Psychology KW - Applied Psychology KW - Social Psychology SN - 1612-197X TI - Head-fake perception in basketball: the relative contributions of expertise, visual or motor training, and test repetition VL - 20 ER - TY - JOUR AU - Güldenpenning, Iris AU - Weigelt, Matthias AU - Memmert, Daniel AU - Klatt, Stefanie ID - 37785 JF - Psychology of Sport and Exercise KW - Applied Psychology SN - 1469-0292 TI - Processing deceptive information in sports: Individual differences for responding to head fakes depends on the attentional capability of the observer VL - 51 ER - TY - JOUR AU - Güldenpenning, Iris AU - Kunde, Wilfried AU - Weigelt, Matthias ID - 37823 JF - Acta Psychologica KW - Arts and Humanities (miscellaneous) KW - Developmental and Educational Psychology KW - Experimental and Cognitive Psychology KW - General Medicine SN - 0001-6918 TI - Cognitive load reduces interference by head fakes in basketball VL - 203 ER - TY - JOUR AB - AbstractWe have collected data from a world-wide survey among COP delegates to empirically investigate preferences for certain burden sharing rules among key groups in a setting that reflects the possibility of observing concessions from negotiating partners. In our survey, the participants had the opportunity to select and combine up to eight (pre-defined) burden sharing rules and to assign relative weights to the selected rules in their preferred bundle. We examine whether such a mechanism helps to overcome the currently strictly (self-interested) strategic claims on equity in the negotiation process. We observe that delegates from different groups of countries show a general willingness for concessions. However, the degree to which different burden sharing rules are taken into consideration partly differs between countries. As a key insight we report that the individual assessment of the polluter-pays rule based on current emissions does not only stress the persistence of the traditional Annex-B/Non-Annex-B division but also suggests tendencies for a more fragmented grouping with different positions between, for example, delegates from developing countries (i.e. G77 members) and emerging countries (i.e. BASIC). At the same time, we observe tendencies for a more harmonized view among key groups towards the ability-to-pay rule in a setting of weighted burden sharing rules. AU - Kesternich, Martin AU - Löschel, Andreas AU - Ziegler, Andreas ID - 45586 IS - 2 JF - Environmental Economics and Policy Studies KW - Management KW - Monitoring KW - Policy and Law KW - Economics and Econometrics SN - 1432-847X TI - Negotiating weights for burden sharing rules in international climate negotiations: an empirical analysis VL - 23 ER - TY - JOUR AU - Friehs, Maximilian A AU - Güldenpenning, Iris AU - Frings, Christian AU - Weigelt, Matthias ID - 46726 JF - Journal of Cognitive Enhancement TI - Electrify your game! Anodal tDCS increases the resistance to head fakes in basketball VL - 4 ER - TY - GEN AU - Margraf, Linda AU - Krause, Daniel AU - Weigelt, Matthias ED - Dobel, Christian ED - Giesen, Carina ED - Grigutsch, Laura Anne ED - Kaufmann, Jürgen M. ED - Kovács, Gyula ED - Meissner, Franziska ED - Rothermund, Klaus ED - Schweinberger , Stefan R. ID - 38120 TI - Valence-dependent changes of neural processing of augmented feedback after extensive practice of a new motor task ER - TY - JOUR AU - Köster, Carolin AU - Kehne, Miriam ID - 44644 IS - 1 JF - Sportpädagogik TI - Zwischen Trend und Tradition: die Vielfalt des klassischen Gerätturnens und der innovativen Formen des Sichbewegens im Sportunterricht ausgeglichen nutzen. VL - 44 ER - TY - JOUR AU - Köster, Carolin ID - 44643 IS - 1 JF - Sportpädagogik TI - Fitnessstudio Turnhalle : Schülerinnen und Schüler lernen verschiedene Methoden des (hoch-)intensiven Intervalltrainings an klassischen Turngeräten kennen VL - 44 ER - TY - JOUR AU - Güldenpenning, Iris ID - 47045 IS - 2 JF - Zeitschrift für Sportpsychologie KW - Applied Psychology KW - Physical Therapy KW - Sports Therapy and Rehabilitation KW - Social Psychology TI - Bericht zur 52. Tagung der Arbeitsgemeinschaft für Sportpsychologie: Neues Format, unbekannte Talente und Belohnungsaufschub VL - 27 ER - TY - GEN AU - Weigelt, Matthias AU - Güldenpenning, Iris AU - Steggemann-Weinrich, Y. ED - Amesberger, G. ED - Würth, S. ED - Finkenzeller, T. ID - 47019 T2 - Zukunft der Sportpsychologie zwischen Verstehen und Evidenz. Abstractband der 52. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) TI - No effect of social cues in antisocial behavior: The head-fake effect in basketball is not based on the processing of eye gaze direction ER - TY - GEN AU - Polzien, A. AU - Güldenpenning, Iris AU - Weigelt, Matthias ED - Amesberger, G. ED - Würth, S. ED - Finkenzeller, T. ID - 47026 T2 - Zukunft der Sportpsychologie zwischen Verstehen und Evidenz. Abstractband der 52. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) TI - Worauf basiert der Blicktäuschungseffekt im Basketball? Stimulus-Stimulus (S-S) vs. Stimulus-Response (S-R) Interferenz ER - TY - GEN AU - Weigelt, Matthias AU - Güldenpenning, Iris AU - Ste, Y. ED - Dobel, C. ED - Giesen, C. ED - Grigutsch, L. A. ED - Kaufmann, J. M. ED - Kovács, G. ED - Meissner, F. ED - Rothermund, K. ED - Schweinberger, S. R. ID - 47016 T2 - Abstracts of the 62nd Conference of Experimental Psychologists (TeaP) TI - The head-fake effect in basketball is based on the automating processing of head orientation, but not on gaze information ER - TY - GEN AU - Friehs, M. AU - Güldenpenning, Iris AU - Frings, C. AU - Weigelt, Matthias ED - Dobel, C. ED - Giesen, C. ED - Grigutsch, L. A. ED - Kaufmann, J. M. ED - Kovács, G. ED - Meissner, F. ED - Rothermund, K. ED - Schweinberger, S. R. ID - 47015 T2 - Abstracts of the 62nd Conference of Experimental Psychologists (TeaP) TI - Electrify your Game! Anodal tDCS Increases the Resistance to Head Fakes in Basketball in basketball ER - TY - GEN AU - Polzien, A. AU - Güldenpenning, Iris AU - Weigelt, Matthias ED - Dobel, C. ED - Giesen, C. ED - Grigutsch, L. A. ED - Kaufmann, J. M. ED - Kovács, G. ED - Meissner, F. ED - Rothermund, K. ED - Schweinberger, S. R. ID - 47017 T2 - Abstracts of the 62nd Conference of Experimental Psychologists (TeaP) TI - Temporal distance between head turn and pass modulates the head fake effect in basketball ER - TY - GEN AU - Güldenpenning, Iris AU - Weigelt, Matthias AU - Kunde, W. ED - Dobel, C. ED - Giesen, C. ED - Grigutsch, L. A. ED - Kaufmann, J. M. ED - Kovács, G. ED - Meissner, F. ED - Rothermund, K. ED - Schweinberger, S. R. ID - 47018 T2 - Abstracts of the 62nd Conference of Experimental Psychologists (TeaP) TI - Producing deceptive actions in sports: The costs of generating head fakes in basketball ER - TY - GEN AU - Güldenpenning, Iris AU - Böer, Nils Tobias AU - Kunde, Wilfried AU - Weigelt, Matthias ED - Amesberger, G. ED - Würth, S. ED - Finkenzeller, T. ID - 38116 T2 - Zukunft der Sportpsychologie zwischen Verstehen und Evidenz. Abstractband der 52. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) TI - Anpassungseffekte an spielerspezifische Häufigkeiten von Blicktäuschungen im Basketball ER - TY - CHAP AU - Weigelt, Matthias AU - Krause, Daniel AU - Güldenpenning, Iris ED - Schüler, J, ED - Wegner, M. ED - Plessner, H. ID - 47061 T2 - Sportpsychologie: Grundlagen und Anwendung TI - Lernen und Gedächtnis im Sport ER - TY - CONF AB - Ultrasonic wire bonding is a process to form electrical connections in electronics well established industry. Typically, a clamping tool is pressed on the wire and forced to vibrate at relative high frequency 40 to 100 kHz. The ultrasonic vibration is transmitted through the wire into the interface between wire and substrate. Due to frictional processes, contamination like oxide layers are removed from the contact zone, the surface roughness is reduced, and with increasing bond duration an metallic connection of wire and substrate is established. It is known that the amount of ultrasonic energy over time directly influences the strength and reliability of the bond connection, but the determination of optimum bond parameters is still a challenging experimental task. For this, in the past different model approaches have been presented, to calculate the bond quality by simulation. Measuring the friction between wire and substrate to validate these models is a challenging task at ultrasonic bonding frequency. Therefore a versatile test rig for bonding experiments at frequencies lower than 1 kHz is setup to get detailed insight into the different phases of the connection process. It includes a piezoelectric force sensor for the measurement of the three-dimensional process forces, an electrodynamic shaker for the vibration excitation and a conventional tension-compression testing machine to apply the bond normal force. Using this test rig, it is possible to observe the different phases of bond formation in detail, validate and enhance existing models and finally optimize bond parameters for different processes. AU - Schemmel, Reinhard AU - Scheidemann, Claus AU - Hemsel, Tobias AU - Kirsch, Olaf AU - Sextro, Walter ID - 17355 T2 - CIPS 2020; 11th International Conference on Integrated Power Electronics Systems TI - Experimental analysis and modelling of bond formation in ultrasonic heavy wire bonding ER - TY - BOOK AB - Schwingungsprobleme in der Technik analysieren, verstehen und beschreiben Schwingungen treten als nützliche oder auch als störende Erscheinungen fast überall in Natur und Technik auf. Deshalb ist es wichtig, sie zu verstehen, zu deuten oder auch in gewünschter Weise zu beeinflussen. Dieses Lehrbuch gibt eine Einführung in die physikalischen Grundlagen und die mathematische Behandlung von Schwingungen. In der aktuellen Auflage wurden der Text und die Bilder überarbeitet sowie konstruktive Hinweise von Fachkollegen berücksichtigt. Der Inhalt Grundbegriffe und Darstellungsmittel - Freie Schwingungen - Selbsterregte Schwingungen - Parametererregte Schwingungen - Erzwungene Schwingungen - Koppelschwingungen - Kontinuumsschwingungen - Chaotische Bewegungen - Aufgaben und Ergebnisse Die Zielgruppe Studierende der Ingenieurwissenschaften, der Physik und der Mathematik, berufstätige Ingenieure AU - Magnus, Kurt AU - Popp, Karl AU - Sextro, Walter ID - 9857 SN - 978-3-658-31115-5 TI - Schwingungen ER - TY - CONF AU - Schemmel, Reinhard AU - Krieger, Viktor AU - Hemsel, Tobias AU - Sextro, Walter ID - 17706 SN - 9781728160498 T2 - 2020 21st International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) TI - Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization ER - TY - CONF AB - In all fields, the significance of a reliable and accurate predictive model is almost unquantifiable. With deep domain knowledge, models derived from first principles typically outperforms other models in terms of reliability and accuracy. When it may become a cumbersome or an unachievable task to build or validate such models of complex (non-linear) systems, machine learning techniques are employed to build predictive models. However, the accuracy of such techniques is not only dependent on the hyper-parameters of the chosen algorithm, but also on the amount and quality of data. This paper investigates the application of classical time series forecasting approaches for the reliable prognostics of technical systems, where black box machine learning techniques might not successfully be employed given insufficient amount of data and where first principles models are infeasible due to lack of domain specific data. Forecasting by analogy, forecasting by analytical function fitting, an exponential smoothing forecasting method and the long short-term memory (LSTM) are evaluated and compared against the ground truth data. As a case study, the methods are applied to predict future crack lengths of riveted aluminium plates under cyclic loading. The performance of the predictive models is evaluated based on error metrics leading to a proposal of when to apply which forecasting approach. AU - Aimiyekagbon, Osarenren Kennedy AU - Bender, Amelie AU - Sextro, Walter ID - 17810 IS - 1 KW - PHM 2019 KW - crack propagation KW - forecasting KW - unevenly spaced time series KW - step ahead prediction KW - short time series T2 - PHM Society European Conference TI - Evaluation of time series forecasting approaches for the reliable crack length prediction of riveted aluminium plates given insufficient data VL - 5 ER - TY - CHAP AU - Schütte, Jan AU - Sextro, Walter ID - 22007 SN - 2195-4356 T2 - Lecture Notes in Mechanical Engineering TI - Model-Based Investigation of the Influence of Wheel Suspension Characteristics on Tire Wear ER - TY - CONF AB - FPGAs have found increasing adoption in data center applications since a new generation of high-level tools have become available which noticeably reduce development time for FPGA accelerators and still provide high-quality results. There is, however, no high-level benchmark suite available, which specifically enables a comparison of FPGA architectures, programming tools, and libraries for HPC applications. To fill this gap, we have developed an OpenCL-based open-source implementation of the HPCC benchmark suite for Xilinx and Intel FPGAs. This benchmark can serve to analyze the current capabilities of FPGA devices, cards, and development tool flows, track progress over time, and point out specific difficulties for FPGA acceleration in the HPC domain. Additionally, the benchmark documents proven performance optimization patterns. We will continue optimizing and porting the benchmark for new generations of FPGAs and design tools and encourage active participation to create a valuable tool for the community. To fill this gap, we have developed an OpenCL-based open-source implementation of the HPCC benchmark suite for Xilinx and Intel FPGAs. This benchmark can serve to analyze the current capabilities of FPGA devices, cards, and development tool flows, track progress over time, and point out specific difficulties for FPGA acceleration in the HPC domain. Additionally, the benchmark documents proven performance optimization patterns. We will continue optimizing and porting the benchmark for new generations of FPGAs and design tools and encourage active participation to create a valuable tool for the community. AU - Meyer, Marius AU - Kenter, Tobias AU - Plessl, Christian ID - 21632 KW - FPGA KW - OpenCL KW - High Level Synthesis KW - HPC benchmarking SN - 9781665415927 T2 - 2020 IEEE/ACM International Workshop on Heterogeneous High-performance Reconfigurable Computing (H2RC) TI - Evaluating FPGA Accelerator Performance with a Parameterized OpenCL Adaptation of Selected Benchmarks of the HPCChallenge Benchmark Suite ER - TY - JOUR AB - In scientific computing, the acceleration of atomistic computer simulations by means of custom hardware is finding ever-growing application. A major limitation, however, is that the high efficiency in terms of performance and low power consumption entails the massive usage of low precision computing units. Here, based on the approximate computing paradigm, we present an algorithmic method to compensate for numerical inaccuracies due to low accuracy arithmetic operations rigorously, yet still obtaining exact expectation values using a properly modified Langevin-type equation. AU - Rengaraj, Varadarajan AU - Lass, Michael AU - Plessl, Christian AU - Kühne, Thomas ID - 12878 IS - 2 JF - Computation TI - Accurate Sampling with Noisy Forces from Approximate Computing VL - 8 ER - TY - GEN AB - Die Erfindung betrifft ein Gerät mit wenigstens einem elastisch verformbaren Bauteil als Strukturteil und/oder Lagerteil, auf das im Betriebsverlauf von wechselnden Betriebszuständen abhängige, unterschiedliche Verformungskräfte einwirken, die zu einem die Bauteilnutzungsdauer begrenzenden Bauteilverschleiß führen, und mit einer Einrichtung zur Bestimmung der Bauteilnutzungsdauer und einer verschleißbedingten Bauteil-Restnutzungsdauer. Erfindungsgemäß wird ein sich zeitversetzt wiederholender, jeweils gleicher Betriebszustand vorbestimmt, dem eine jeweils gleiche Verformungskraft zugeordnet ist, durch die das elastisch verformbare Bauteilmaterial verformt wird. Ein solcher vorbestimmter Betriebszustand wird jeweils von einer Mess- und Auswerteeinheit erkannt und ein Messvorgang durch ein Startsignal selbsttätig gestartet, wobei mit wenigstens einem bauteilzugeordneten Beschleunigungssensor, die aktuelle Beschleunigung der Verformung oder daraus abgeleitete Kennwerte als Kenngröße für eine aktuelle Bauteilsteifigkeit gemessen und jeweils in einer Messkurve gespeichert und verglichen wird. AU - Reinke, Kai AU - Bender, Amelie AU - Meyer, Tobias AU - Sextro, Walter AU - Kimotho, James Kuria ID - 9981 TI - Patent EP 3 358 332 B1: Verfahren zur Bestimmung des Beginns einer verschleißbedingten Bauteil-Restnutzungsdauer eines elastisch verformbaren Bauteils, als Strukturteil und/oder Lagerteil eines Geräts. ER - TY - JOUR AU - Chiapello, Eve AU - Knoll, Lisa ID - 37021 IS - 2 JF - Journal of Comparative Policy Analysis: Research and Practice KW - Public Administration KW - Sociology and Political Science SN - 1387-6988 TI - The Welfare Conventions Approach: A Comparative Perspective on Social Impact Bonds VL - 22 ER - TY - JOUR AU - Chiapello, Eve AU - Knoll, Lisa ID - 37023 IS - 3 JF - Historical Social Research TI - Social Finance and Impact Investing: Governing Welfare in the Era of Financialization VL - 45 ER - TY - BOOK ED - Althoff, Sebastian ED - Linseisen, Elisa ED - Müller, Maja-Lisa ED - Winter, Franziska ID - 47618 SN - 978-3-7705-6495-8 TI - Re/Dissolving Mimesis ER - TY - CHAP AU - Althoff, Sebastian ED - Linseisen, Elisa ED - Müller, Maja-Lisa ED - Winter, Franziska ID - 47623 T2 - Re/Dissolving Mimesis TI - A CCTV Image that Dissolves like Smeared Data: Distinguishability versus Similarity ER - TY - CHAP AU - Althoff, Sebastian AU - Linseisen, Elisa AU - Müller, Maja-Lisa AU - Winter, Franziska ED - Linseisen, Elisa ED - Müller, Maja-Lisa ED - Winter, Franziska ID - 47622 T2 - Re/Dissolving Mimesis TI - Editorial: Re/Dissolving Mimesis ER - TY - JOUR AU - Althoff, Sebastian ID - 47624 IS - 7 JF - Performance Research TI - Seeping Out: The diminishment of the subject in Hito Steyerl’s How Not to Be Seen VL - 24 ER - TY - CONF AB - The canonical problem for the class Quantum Merlin-Arthur (QMA) is that of estimating ground state energies of local Hamiltonians. Perhaps surprisingly, [Ambainis, CCC 2014] showed that the related, but arguably more natural, problem of simulating local measurements on ground states of local Hamiltonians (APX-SIM) is likely harder than QMA. Indeed, [Ambainis, CCC 2014] showed that APX-SIM is P^QMA[log]-complete, for P^QMA[log] the class of languages decidable by a P machine making a logarithmic number of adaptive queries to a QMA oracle. In this work, we show that APX-SIM is P^QMA[log]-complete even when restricted to more physical Hamiltonians, obtaining as intermediate steps a variety of related complexity-theoretic results. We first give a sequence of results which together yield P^QMA[log]-hardness for APX-SIM on well-motivated Hamiltonians: (1) We show that for NP, StoqMA, and QMA oracles, a logarithmic number of adaptive queries is equivalent to polynomially many parallel queries. These equalities simplify the proofs of our subsequent results. (2) Next, we show that the hardness of APX-SIM is preserved under Hamiltonian simulations (a la [Cubitt, Montanaro, Piddock, 2017]). As a byproduct, we obtain a full complexity classification of APX-SIM, showing it is complete for P, P^||NP, P^||StoqMA, or P^||QMA depending on the Hamiltonians employed. (3) Leveraging the above, we show that APX-SIM is P^QMA[log]-complete for any family of Hamiltonians which can efficiently simulate spatially sparse Hamiltonians, including physically motivated models such as the 2D Heisenberg model. Our second focus considers 1D systems: We show that APX-SIM remains P^QMA[log]-complete even for local Hamiltonians on a 1D line of 8-dimensional qudits. This uses a number of ideas from above, along with replacing the "query Hamiltonian" of [Ambainis, CCC 2014] with a new "sifter" construction. AU - Gharibian, Sevag AU - Piddock, Stephen AU - Yirka, Justin ID - 13226 T2 - Proceedings of the 37th Symposium on Theoretical Aspects of Computer Science (STACS 2020) TI - Oracle complexity classes and local measurements on physical Hamiltonians ER - TY - JOUR AU - Spychala, K. J. AU - Mackwitz, P. AU - Rüsing, Michael AU - Widhalm, A. AU - Berth, Gerhard AU - Silberhorn, Christine AU - Zrenner, Artur ID - 22056 JF - Journal of Applied Physics SN - 0021-8979 TI - Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism ER - TY - JOUR AU - Padberg, Laura AU - Santandrea, Matteo AU - Rüsing, Michael AU - Brockmeier, Julian AU - Mackwitz, Peter AU - Berth, Gerhard AU - Zrenner, Artur AU - Eigner, Christof AU - Silberhorn, Christine ID - 25920 JF - Optics Express SN - 1094-4087 TI - Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides ER - TY - JOUR AB - Optically nonlinear Pb2B5O9X (X = Cl, Br) borate halides are an important group of materials for second harmonic generation (SHG). Additionally, they also possess excellent photocatalytic activity and stability in the process of dechlorination of chlorophenols, which are typical persistent organic pollutants. It would be of great interest to conduct in situ (photo‐) catalysis investigations during the whole photocatalytic process by SHG when considering them as photocatalytic materials. In order to get superior photocatalytic efficiency and maximum surface information, small particles are highly desired. Here, a low‐cost and fast synthesis route that allows growing microcrystalline optically nonlinear Pb2B5O9X borate halides at large quantities is introduced. When applying the ionothermal growth process at temperatures between 130 and 170 °C, microcrystallites with an average size of about 1 µm precipitate with an orthorhombic hilgardite‐like borate halide structure. Thorough examinations using powder X‐ray diffraction and scanning electron microscopy, the Pb2B5O9X microcrystals are indicated to be chemically pure and single‐phased. Besides, the Pb2B5O9X borate halides' SHG efficiencies are confirmed using confocal SHG microscopy. The low‐temperature synthesis route thus makes these borate halides a highly desirable material for surface studies such as monitoring chemical reactions with picosecond time resolution and in situ (photo‐) catalysis investigations. AU - Tan, Deming AU - Kirbus, Benjamin AU - Rüsing, Michael AU - Pietsch, Tobias AU - Ruck, Michael AU - Eng, Lukas M. ID - 47956 IS - 23 JF - Small KW - Biomaterials KW - Biotechnology KW - General Materials Science KW - General Chemistry SN - 1613-6810 TI - Resource‐Efficient Low‐Temperature Synthesis of Microcrystalline Pb2B5O9X (X = Cl, Br) for Surfaces Studies by Optical Second Harmonic Generation VL - 16 ER - TY - JOUR AB - High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled accurately over 5 mm. The high fidelity of the poling is demonstrated over long lengths using a non-destructive technique of confocal scanning second-harmonic microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40 °C without measurable loss of efficiency. AU - Zhao, Jie AU - Rüsing, Michael AU - Javid, Usman A. AU - Ling, Jingwei AU - Li, Mingxiao AU - Lin, Qiang AU - Mookherjea, Shayan ID - 47958 IS - 13 JF - Optics Express KW - Atomic and Molecular Physics KW - and Optics SN - 1094-4087 TI - Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation VL - 28 ER - TY - JOUR AB - Quasi-phase-matched grating structures in lithium niobate waveguides with sub-micrometer periodicities will benefit the development of short-wavelength nonlinear optical devices. Here, we report on the reproducible formation of periodically poled domains in x-cut single-crystalline thin-film lithium niobate with periodicities as short as 600 nm. Shaped single-voltage poling pulses were applied to electrode structures that were fabricated by a combination of electron-beam and direct-writing laser lithography. Evidence of successful poling with good quality was obtained through second-harmonic microscopy and piezoresponse force microscopy imaging. For the sub-micrometer period structures, we observed patterns with a double periodicity formed by domain interactions and features with sizes <200 nm. AU - Zhao, Jie AU - Rüsing, Michael AU - Roeper, Matthias AU - Eng, Lukas M. AU - Mookherjea, Shayan ID - 47955 IS - 19 JF - Journal of Applied Physics KW - General Physics and Astronomy SN - 0021-8979 TI - Poling thin-film x-cut lithium niobate for quasi-phase matching with sub-micrometer periodicity VL - 127 ER - TY - JOUR AU - Zhao, Jie AU - Ma, Chaoxuan AU - Rüsing, Michael AU - Mookherjea, Shayan ID - 47952 IS - 16 JF - Physical Review Letters KW - General Physics and Astronomy SN - 0031-9007 TI - High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides VL - 124 ER - TY - CONF AU - Rüsing, Michael AU - Roeper, M. AU - Amber, Z. AU - Kirbus, B. AU - Eng, L.M. AU - Zhao, J. AU - Mookherjea, S. ID - 47959 T2 - 2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF) TI - Periodic Poling of X-Cut Thin-Film Lithium Niobate: The Route to Submicrometer Periods ER - TY - JOUR AB - The aim of this study was to find out whether teaching how to search for literature would be more beneficial to students and teachers if done online through short videos rather than in person during course time. To find out whether online videos are more beneficial, two courses were asked to fill in questionnaires, one at the beginning and one at the end of the semester. One of the courses received the input online via videos and were given an exercise to put the newly learned skills to use, the other course served as a control group and learned how to search for literature during the course. The results show that while the difference between the two groups is not significant, the videos can still be regarded as being more beneficial than teaching the necessary skills during course time. AU - Hahn, Charlotte Anna ID - 33299 IS - 6 JF - die hochschullehre KW - E-Learning KW - information competence KW - literature KW - library KW - research TI - Informationskompetenz durch E-Learning? Durch Lernvideos nach Literatur suchen ER - TY - JOUR AU - Gretz, Daniela ID - 48054 IS - 1 JF - Jahrbuch der Raabe-Gesellschaft KW - General Medicine SN - 1865-8857 TI - Zwischen romantischem Fragment und Skizze/n der Moderne. Zum medialen Realismus von Wilhelm Raabes "Wer kann es wenden?" VL - 61 ER - TY - CONF AB - The detection of orchestrated and potentially manipulative campaigns in social media is far more meaningful than an- alyzing single account behaviour but also more challenging in terms of pattern recognition, data processing, and com- putational complexity. While supervised learning methods need an enormous amount of reliable ground truth data to find rather inflexible patterns, classical unsupervised learn- ing techniques need a lot of computational power to handle large amount of data. This makes them infeasible for real- time analysis. In this work, we demonstrate the applicability of text stream clustering for the real-time detection of coordi- nated campaigns. AU - Assenmacher, D AU - Adam, L AU - Trautmann, Heike AU - Grimme, C ID - 46319 T2 - Proceedings of the Florida Artificial Intelligence Research Society Conference TI - Towards Real-Time and Unsupervised Campaign Detection in Social Media ER - TY - THES AB - In der Forschungsarbeit wird die Zeitungskommunikation des 18. Jahrhunderts aus sprachwissenschaftlicher Perspektive untersucht. Es wird gezeigt, wie sich das Textsortenrepertoire der Zeitung weiterentwickelte, welche sprachlichen Wandelprozesse stattfanden und wie die Zeitung übergreifend allmählich zu einem Massenmedium avancierte. Der textlinguistische Zugang auf die Zeitungssprache wird an den relevanten Stellen ergänzt durch einschlägige Erkenntnisse aus der historischen Presseforschung und der linguistischen Kulturanalyse. So wird etwa nachgezeichnet, wie sich die Zeitungsschreiber im Laufe des Jahrhunderts immer stärker von den Einflüssen der Kanzleisprachen lösten und Formulierungsstrategien etablierten, die auf die Anforderungen des journalistischen Berichtens abgestimmt waren. Mit diesen und weiteren Ergebnissen wird der Versuch angestellt, eine Forschungslücke der Sprachgeschichtsforschung zu schließen, in der die Zeitungen des 18. Jahrhunderts bisher lediglich randständig untersucht wurden. AU - Wille, Manuel ID - 48272 KW - text linguistics KW - newspaper KW - Hamburgischer Correspondent KW - Textlinguistik KW - Sprachgeschichte KW - Textsortenwandel KW - Korpuslinguistik SN - 978-3-347-16354-6 TI - Die Tageszeitung des 18. Jahrhunderts auf dem Weg zum Massenmedium VL - 15 ER -