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 -