TY - THES
AB - Eine zustandsbasierte Instandhaltungsstrategie reduziert das Risiko eines Ausfalls eines technischen Systems bei gleichzeitig hoher Ausnutzung und planbaren Instandhaltungsmaßnahmen. Das Ziel dieser Arbeit liegt in der Entwicklung einer Zustandsüberwachung für Gummi-Metall-Elemente. Die Herausforderungen dieser Zustandsüberwachung leiten sich aus dem viskoelastischen Verhalten sowie dem komplexen Degradationsverhalten der Elemente ab. Infolge der daraus resultierenden Unsicherheiten werden die Elemente heutzutage präventiv instandgehalten. In Lebensdauerversuchen der Gummi-Metall-Elemente werden drei Messgrößen detektiert. Dabei wird mit der Temperatur eine Messgröße identifiziert, die am geeignetsten zur Beschreibung des Zustands der Elemente ist. Generell wird die Genauigkeit einer Zustandsüberwachung durch verschiedene Unsicherheiten beeinflusst. Für die Prognose der nutzbaren Restlebensdauer der Gummi-Metall-Elemente wird das Partikelfilter, eine verbreitete modellbasierte Methode zur Zustandsüberwachung technischer Systeme, weiterentwickelt, um Unsicherheiten im Verhalten und der Degradation der Elemente zu berücksichtigen. Anhand der Ergebnisse wird belegt, dass aufbauend auf dieser Zustandsüberwachung die Ausnutzung der Gummi-Metall-Elemente in realen Anwendungen durch eine präventive Instandhaltung erhöht werden kann. Damit bildet diese Arbeit die Basis für zukünftige, prädiktive Instandhaltungskonzepte für diese Elemente. Weiterhin bestätigt die Arbeit, dass eine Berücksichtigung vorliegender Unsicherheiten zu einem frühen Zeitpunkt im Entwicklungsprozess des Zustandsüberwachungssystems empfehlenswert ist.
AU - Bender, Amelie
ID - 21630
KW - Zustandsüberwachung
KW - Prognose der Restlebensdauer
KW - modellbasierte Prognose
KW - Partikelfilter
KW - Unsicherheiten
KW - Gummi
KW - Verlässlichkeit
KW - Lebensdauerversuche
KW - Predictive Maintenance
TI - Zustandsüberwachung zur Prognose der Restlebensdauer von Gummi-Metall-Elementen unter Berücksichtigung systembasierter Unsicherheiten
ER -
TY - CONF
AU - Ghasemzadeh Mohammadi, Hassan
AU - Jentzsch, Felix
AU - Kuschel, Maurice
AU - Arshad, Rahil
AU - Rautmare, Sneha
AU - Manjunatha, Suraj
AU - Platzner, Marco
AU - Boschmann, Alexander
AU - Schollbach, Dirk
ID - 30908
T2 - Machine Learning and Principles and Practice of Knowledge Discovery in Databases
TI - FLight: FPGA Acceleration of Lightweight DNN Model Inference in Industrial Analytics
ER -
TY - GEN
AU - Krause, Daniel
AU - Margraf, Linda
AU - Weigelt, Matthias
ID - 37842
TI - Neural Correlates of Augmented Feedback Processing are Associated to Short-Term Behavioral Changes and Automaticity in Motor Learning
ER -
TY - GEN
AU - Krause, Daniel
AU - Margraf, Linda
AU - Weigelt, Matthias
ED - Huckauf, Anke
ED - Baumann, Martin
ED - Ernst, Marc
ED - Herbert, Cornelia
ED - Kiefer, Markus
ED - Sauter, Marian
ID - 38074
TI - Predictive value of valence-dependent neural correlates of augmented feedback processing for behavioral adaptation and learning in extensive motor learning
ER -
TY - GEN
AU - Margraf, Linda
AU - Krause, Daniel
AU - Weigelt, Matthias
ID - 37840
TI - Neural Processing of Augmented Feedback is Valence-Dependent and Changes After Extensive Practice of a New Motor Task
ER -
TY - GEN
AU - Margraf, Linda
AU - Krause, Daniel
AU - Weigelt, Matthias
ED - Huckauf, Anke
ED - Baumann, Martin
ED - Ernst, Marc
ED - Herbert, Cornelia
ED - Kiefer, Markus
ED - Sauter, Marian
ID - 38078
TI - Changes in valence-dependent neural correlates of augmented feedback processing after extensive motor sequence learning
ER -
TY - JOUR
AB - The development of motor competencies is necessary for participation in the culture of sport, exercise, and physical activity, which in turn supports the development of a healthy lifestyle. A lack of physical activity in childhood and deficits in motor performance emphasize the relevance of interventions for promoting basic motor competencies. However, there are research desiderata with regard to such interventions. This article describes an intervention program for promoting basic motor competencies in middle childhood (around 6 to 10 years of age). The intervention was investigated in a longitudinal study from June 2019 to January 2020 (n = 200; 58% girls, M = 8.84 years, SD = 0.63) at three primary schools. The intervention was conducted once a week in physical education (PE). The comparison group participated in regular PE. The intervention showed significant effects on basic motor competencies in object movement but not in self-movement. The results demonstrate that positive effects on basic motor competencies can be achieved with the help of a relatively simple intervention. Further longitudinal studies are desirable as a means of substantiating the results and developing evidence-based concepts to support children in their development in the best possible way.
AU - Strotmeyer, Anne
AU - Kehne, Miriam
AU - Herrmann, Christian
ID - 42713
IS - 14
JF - International Journal of Environmental Research and Public Health
KW - Health
KW - Toxicology and Mutagenesis
KW - Public Health
KW - Environmental and Occupational Health
SN - 1660-4601
TI - Effects of an Intervention for Promoting Basic Motor Competencies in Middle Childhood
VL - 18
ER -
TY - GEN
AU - Polzien, A.
AU - Güldenpenning, Iris
AU - Weigelt, Matthias
ED - Huckauf, A.
ED - Baumann, M.
ED - Ernst, M.
ED - Herbert, C.
ED - Kiefer, M.
ED - Sauter, M.
ID - 47031
T2 - Abstracts of the 63rd Conference of Experimental Psychologists (TeaP)
TI - Repeating head fakes in basketball: Temporal aspects affect the congruency-sequence effect
ER -
TY - GEN
AU - Güldenpenning, Iris
AU - Kunde, W.
AU - Weigelt, Matthias
ED - Huckauf, A.
ED - Baumann, M.
ED - Ernst, M.
ED - Herbert, C.
ED - Kiefer, M.
ED - Sauter, M.
ID - 47030
T2 - Abstracts of the 63rd Conference of Experimental Psychologists (TeaP)
TI - Cognitive load reduces interference by head fakes in basketball
ER -
TY - GEN
AU - Güldenpenning, Iris
AU - Barkey, Thies
AU - Jackson, Robin C.
AU - Weigelt, Matthias
ED - Höner, O.
ED - Wachsmuth, S.
ED - Reinhard, M.L.
ED - Schultz, F.
ID - 47131
T2 - Talententwicklung und Coaching im Sport. Abstractband der 53. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp)
TI - Der Einfluss von Kontextinformationen auf den Blicktäuschungseffekt im Basketball
ER -
TY - CONF
AU - Lishkova, Y.
AU - Cannon, M.
AU - Ober-Blöbaum, Sina
ID - 47146
TI - A multirate variational approach to Nonlinear MPC
ER -
TY - JOUR
AB - Ultrasonic wire bonding is a solid-state joining process, used in the electronics industry to form electrical connections, e.g. to connect electrical terminals within semiconductor modules. Many process parameters affect the bond strength, such like the bond normal force, ultrasonic power, wire material and bonding frequency. Today, process design, development, and optimization is most likely based on the knowledge of process engineers and is mainly performed by experimental testing. In this contribution, a newly developed simulation tool is presented, to reduce time and costs and efficiently determine optimized process parameter. Based on a co-simulation of MATLAB and ANSYS, the different physical phenomena of the wire bonding process are considered using finite element simulation for the complex plastic deformation of the wire and reduced order models for the transient dynamics of the transducer, wire, substrate and bond formation. The model parameters such as the coefficients of friction between bond tool and wire and between wire and substrate were determined for aluminium and copper wire in experiments with a test rig specially developed for the requirements of heavy wire bonding. To reduce simulation time, for the finite element simulation a restart analysis and high performance computing is utilized. Detailed analysis of the bond formation showed, that the normal pressure distribution in the contact between wire and substrate has high impact on bond formation and distribution of welded areas in the contact area.
AU - Schemmel, Reinhard
AU - Krieger, Viktor
AU - Hemsel, Tobias
AU - Sextro, Walter
ID - 21436
JF - Microelectronics Reliability
KW - Ultrasonic heavy wire bonding
KW - Co-simulation
KW - ANSYS
KW - MATLAB
KW - Process optimization
KW - Friction coefficient
KW - Copper-copper
KW - Aluminium-copper
SN - 0026-2714
TI - Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization
VL - 119
ER -
TY - CONF
AB -
Predictive Maintenance as a desirable maintenance strategy in industrial applications relies on suitable condition monitoring solutions to reduce costs and risks of the monitored technical systems. In general, those solutions utilize model-based or data-driven methods to diagnose the current state or predict future states of monitored technical systems. However, both methods have their advantages and drawbacks. Combining both methods can improve uncertainty consideration and accuracy. Different combination approaches of those hybrid methods exist to exploit synergy effects. The choice of an appropriate approach depends on different requirements and the goal behind the selection of a hybrid approach.
In this work, the hybrid approach for estimating remaining useful lifetime takes potential uncertainties into account. Therefore, a data-driven estimation of new measurements is integrated within a model-based method. To consider uncertainties within the system, a differentiation between different system behavior is realized throughout diverse states of degradation.
The developed hybrid prediction approach bases on a particle filtering method combined with a machine learning method, to estimate the remaining useful lifetime of technical systems. Particle filtering as a Monte Carlo simulation technique is suitable to map and propagate uncertainties. Moreover, it is a state-of-the-art model-based method for predicting remaining useful lifetime of technical systems. To integrate uncertainties a multi-model particle filtering approach is employed. In general, resampling as a part of the particle filtering approach has the potential to lead to an accurate prediction. However, in the case where no future measurements are available, it may increase the uncertainty of the prediction. By estimating new measurements, those uncertainties are reduced within the data-driven part of the approach. Hence, both parts of the hybrid approach strive to account for and reduce uncertainties.
Rubber-metal-elements are employed as a use-case to evaluate the developed approach. Rubber-metal-elements, which are used to isolate vibrations in various systems, such as railways, trucks and wind turbines, show various uncertainties in their behavior and their degradation. Those uncertainties are caused by diverse inner and outer factors, such as manufacturing influences and operating conditions. By expert knowledge the influences are described, analyzed and if possible reduced. However, the remaining uncertainties are considered within the hybrid prediction method. Relative temperature is the selected measurand to describe the element’s degradation. In lifetime tests, it is measured as the difference between the element’s temperature and the ambient temperature. Thereby, the influence of the ambient temperature on the element’s temperature is taken into account. Those elements show three typical states of degradation that are identified within the temperature measurements. Depending on the particular state of degradation a new measurement is estimated within the hybrid approach to reduce potential uncertainties.
Finally, the performance of the developed hybrid method is compared to a model-based method for estimating the remaining useful lifetime of the same elements. Suitable performance indices are implemented to underline the differences between the results.
AU - Bender, Amelie
AU - Sextro, Walter
ED - Do, Phuc
ED - King, Steve
ED - Fink, Olga
ID - 22724
IS - 1
KW - Hybrid prediction method
KW - Multi-model particle filtering
KW - Uncertainty quantification
KW - RUL estimation
T2 - Proceedings of the European Conference of the PHM Society 2021
TI - Hybrid Prediction Method for Remaining Useful Lifetime Estimation Considering Uncertainties
VL - 6
ER -
TY - CONF
AB - Several methods, including order analysis, wavelet analysis and empirical mode decomposition have been proposed and successfully employed for the health state estimation of technical systems operating under varying conditions. However, where information such as the speed of rotating machinery, component specifications or other domain-specific information is unavailable, such methods are often infeasible. Thus, this paper investigates the application of classical time-domain features, features from the medical field and novel features from the highly comparative time-series analysis (HCTSA) package, for the health state estimation of rotating machinery operating under varying conditions. Furthermore, several feature selection methods are investigated to identify features as viable health indicators for the diagnostics and prognostics of technical systems. As a case study, the presented methods are evaluated on real-world and experimentally acquired vibration data of bearings operating under varying speed. The results show that the selected features can successfully be employed as health indicators for technical systems operating under varying conditions.
AU - Aimiyekagbon, Osarenren Kennedy
AU - Bender, Amelie
AU - Sextro, Walter
ID - 22507
KW - Wind turbine diagnostics
KW - bearing diagnostics
KW - non-stationary operating conditions
KW - varying operating conditions
KW - feature extraction
KW - feature selection
KW - fault detection
KW - failure detection
T2 - Proceedings of the Seventeenth International Conference on Condition Monitoring and Asset Management (CM 2021)
TI - On the applicability of time series features as health indicators for technical systems operating under varying conditions
ER -
TY - CONF
AB - In the industry 4.0 era, there is a growing need to transform unstructured data acquired by a multitude of sources into information and subsequently into knowledge to improve the quality of manufactured products, to boost production, for predictive maintenance, etc. Data-driven approaches, such as machine learning techniques, are typically employed to model the underlying relationship from data. However, an increase in model accuracy with state-of-the-art methods, such as deep convolutional neural networks, results in less interpretability and transparency. Due to the ease of implementation, interpretation and transparency to both domain experts and non-experts, a rule-based method is proposed in this paper, for prognostics and health management (PHM) and specifically for diagnostics. The proposed method utilizes the most relevant sensor signals acquired via feature extraction and selection techniques and expert knowledge. As a case study, the presented method is evaluated on data from a real-world quality control set-up provided by the European prognostics and health management society (PHME) at the conference’s 2021 data challenge. With the proposed method, our team took the third place, capable of successfully diagnosing different fault modes, irrespective of varying conditions.
AU - Aimiyekagbon, Osarenren Kennedy
AU - Muth, Lars
AU - Wohlleben, Meike Claudia
AU - Bender, Amelie
AU - Sextro, Walter
ED - Do, Phuc
ED - King, Steve
ED - Fink, Olga
ID - 27111
IS - 1
KW - PHME 2021
KW - Feature Selection Classification
KW - Feature Selection Clustering
KW - Interpretable Model
KW - Transparent Model
KW - Industry 4.0
KW - Real-World Diagnostics
KW - Quality Control
KW - Predictive Maintenance
T2 - Proceedings of the European Conference of the PHM Society 2021
TI - Rule-based Diagnostics of a Production Line
VL - 6
ER -
TY - CONF
AU - Lenz, Cederic
AU - Henke, Christian
AU - Trächtler, Ansgar
ID - 33975
T2 - 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)
TI - Anomaly detection in hot forming processes using hybrid modeling
ER -
TY - JOUR
AU - Itner, Dominik
AU - Gravenkamp, Hauke
AU - Dreiling, Dmitrij
AU - Feldmann, Nadine
AU - Henning, Bernd
ID - 21232
JF - Ultrasonics
SN - 0041-624X
TI - Efficient semi-analytical simulation of elastic guided waves in cylinders subject to arbitrary non-symmetric loads
ER -
TY - CHAP
AB - Solving partial differential equations on unstructured grids is a cornerstone of engineering and scientific computing. Nowadays, heterogeneous parallel platforms with CPUs, GPUs, and FPGAs enable energy-efficient and computationally demanding simulations. We developed the HighPerMeshes C++-embedded Domain-Specific Language (DSL) for bridging the abstraction gap between the mathematical and algorithmic formulation of mesh-based algorithms for PDE problems on the one hand and an increasing number of heterogeneous platforms with their different parallel programming and runtime models on the other hand. Thus, the HighPerMeshes DSL aims at higher productivity in the code development process for multiple target platforms. We introduce the concepts as well as the basic structure of the HighPerMeshes DSL, and demonstrate its usage with three examples, a Poisson and monodomain problem, respectively, solved by the continuous finite element method, and the discontinuous Galerkin method for Maxwell’s equation. The mapping of the abstract algorithmic description onto parallel hardware, including distributed memory compute clusters, is presented. Finally, the achievable performance and scalability are demonstrated for a typical example problem on a multi-core CPU cluster.
AU - Alhaddad, Samer
AU - Förstner, Jens
AU - Groth, Stefan
AU - Grünewald, Daniel
AU - Grynko, Yevgen
AU - Hannig, Frank
AU - Kenter, Tobias
AU - Pfreundt, Franz-Josef
AU - Plessl, Christian
AU - Schotte, Merlind
AU - Steinke, Thomas
AU - Teich, Jürgen
AU - Weiser, Martin
AU - Wende, Florian
ID - 21587
KW - tet_topic_hpc
SN - 0302-9743
T2 - Euro-Par 2020: Parallel Processing Workshops
TI - HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids
ER -
TY - CHAP
AU - Ramaswami, Arjun
AU - Kenter, Tobias
AU - Kühne, Thomas
AU - Plessl, Christian
ID - 29936
SN - 0302-9743
T2 - Applied Reconfigurable Computing. Architectures, Tools, and Applications
TI - Evaluating the Design Space for Offloading 3D FFT Calculations to an FPGA for High-Performance Computing
ER -
TY - JOUR
AU - Alhaddad, Samer
AU - Förstner, Jens
AU - Groth, Stefan
AU - Grünewald, Daniel
AU - Grynko, Yevgen
AU - Hannig, Frank
AU - Kenter, Tobias
AU - Pfreundt, Franz‐Josef
AU - Plessl, Christian
AU - Schotte, Merlind
AU - Steinke, Thomas
AU - Teich, Jürgen
AU - Weiser, Martin
AU - Wende, Florian
ID - 24788
JF - Concurrency and Computation: Practice and Experience
KW - tet_topic_hpc
SN - 1532-0626
TI - The HighPerMeshes framework for numerical algorithms on unstructured grids
ER -
TY - CONF
AB - We present the optical generation of a 300 Gbaud PRBS-7 data signal based on time-division multiplexing of Nyquist sinc-pulse sequences. The employed electronic and photonic components need only one-third of the final bandwidth.
AU - Singh, Karanveer
AU - Meier, Janosch
AU - Preussler, Stefan
AU - Kress, Christian
AU - Scheytt, J. Christoph
AU - Schneider, Thomas
ID - 29205
SN - 978-1-943580-94-1
T2 - OSA Advanced Photonics Congress 2021
TI - Optical PRBS Generation with Threefold Bandwidth of the Employed Electronics and Photonics
ER -
TY - JOUR
AB -
The effect of traces of ethanol in supercritical carbon dioxide on the mixture's thermodynamic properties is studied by molecular simulations and Taylor dispersion measurements.
AU - Chatwell, René Spencer
AU - Guevara-Carrion, Gabriela
AU - Gaponenko, Yuri
AU - Shevtsova, Valentina
AU - Vrabec, Jadran
ID - 32240
IS - 4
JF - Physical Chemistry Chemical Physics
KW - Physical and Theoretical Chemistry
KW - General Physics and Astronomy
SN - 1463-9076
TI - Diffusion of the carbon dioxide–ethanol mixture in the extended critical region
VL - 23
ER -
TY - JOUR
AB - PurposeThe purpose of this article is to illuminate the relations of work-related practices of local managers of live music events in Ostwestfalen-Lippe (OWL) and barriers and needs of vulnerable customers (VC) in order to explore possibilities to increase cultural participation of VC.Design/methodology/approachThis article explores work-related practices of managers of live music events in OWL and asks if and to what extent these practices have an influence on the cultural participation of “vulnerable customers” (VC). It combines the findings of two studies: a) an explorative investigation on the work-related self-conceptions of managers of live music events in OWL (Study 1), and b) a sub-project on cultural participation of VC, which is part of the research project “kulturPreis. Increasing cultural participation through innovative and economically sustainable pricing concepts”, funded by the German Federal Ministry of Education and Research (Study 2).FindingsIt can be stated that there is an imbalance of knowledge: while VC tend to have a clear understanding of which barriers are the responsibility of managers of live music events, managers tend to lack knowledge regarding the needs of VC, and regarding the interrelationships between financial and social barriers facing them. Whether this knowledge and understanding can be developed in the future depends on the possibilities of exchanges between managers of live music events, cultural institutions, welfare organisations, political institutions and not least VC.Originality/valueBased on these studies, this article combines different approaches by linking work-related practices of managers of live music events with cultural participation of VC.
AU - Flath, Beate
AU - Momen Pour Tafreshi, Maryam
ID - 40978
IS - 2
JF - Arts and the Market
SN - 2056-4945
TI - Work-related practices of local managers of live music events in Ostwestfalen-Lippe (OWL) and their impact on cultural participation
VL - 11
ER -
TY - GEN
AU - Lammer, Christina
ID - 30961
TI - Andrea Karimé: Sterne im Kopf und ein unglaublicher Plan. Köln: Peter Hammer Verlag 2021
ER -
TY - CHAP
AU - Knoll, Lisa
ED - Sturn, Richard
ED - Klüh, Ulrich
ID - 37015
T2 - Der Staat in der Großen Transformation
TI - Nachhaltigkeitsmärkte im Vergleich. Zur Transformation von Staatlichkeit
VL - Band 19
ER -
TY - CHAP
AU - Knoll, Lisa
ED - Peetz, Thorsten
ED - Meier, Frank
ID - 37017
T2 - Organisation und Bewertung
TI - Bewerten und Prüfen. Zur Relevanz der Figur der Prüfung für die Organisationssoziologie
ER -
TY - CONF
AB - In diesem Beitrag werden die Elemente „Begleitseminar“ und „Begleitforschungsseminar“ des Praxissemesters für Lehramtsstudierende der beruflichen Fachrichtungen Maschinenbautechnik und Elektrotechnik an der Universität Paderborn im Hinblick auf die Veränderungen durch die Covid-19-Pandemie erläutert.
AU - Jonas-Ahrend, Gabriela
AU - Vernholz, Mats
AU - Temmen, Katrin
ID - 47605
TI - Digitale Begleitseminare im Praxissemester der gewerblich-technischen Fachrichtungen
ER -
TY - JOUR
AB - Разговорные компьютеризированные агенты совершенствуются, развиваются и получают все более широкое распространение в различных сферах жизни. Теперь искусственный интеллект может вести беседу с человеком, используя сложные разговорные приемы и человекоподобные речевые паттерны. Например, Google Duplex, современный голосовой интерфейс, способен автономно выполнять сервисные телефонные звонки таким образом, что собеседнику не удается опознать в нем робота.
С увеличением числа интерактивных коммуникаций человека и компьютера становится очевидной необходимость их изучения: каким образом они происходят, как разрешаются недоразумения и достигаются цели разговора. Статья посвящена эмпирическому изучению взаимодействия между продвинутым разговорным агентом и человеком: в рамках этнометодологии и конверсационного анализа рассмотрены последовательно разворачивающиеся, естественно возникающие речевые практики собеседников, а также порождаемые ими нормативные структуры.
Материалом для анализа послужила аудиозапись телефонной беседы между Google Duplex и человеком-оператором. Исследовано, в частности, как достигается разговорное закрытие — микроструктура, требующая кооперации собеседников в организации чередования реплик. Показано, что завершение беседы происходит за счет постепенного достижения эпистемического равновесия между говорящими, несмотря на интеракционные проблемы, возникающие из-за неуместного просодического контура робота. Подчеркивается связь между институциональным контекстом взаимодействия и роботизированной природой не-человеческого собеседника.
Полученные результаты закладывают основу для дальнейших исследований специфического порядка во взаимодействии человека и робота и способствуют более глубокому пониманию того, как завершается разговор в пограничных случаях.
Благодарности. Статья подготовлена в сотрудничестве с Лабораторией геймификации Сбербанка.
Статья подготовлена в рамках гранта, предоставленного Министерством науки и высшего образования Российской Федерации (№ соглашения о предоставлении гранта: 075-15-2020-908).
AU - Егорова, Анастасия Игоревна
AU - Klowait, Nils
ID - 42671
IS - 1
JF - The monitoring of public opinion economic&social changes
KW - Economics
KW - Econometrics and Finance (miscellaneous)
KW - Sociology and Political Science
SN - 2219-5467
TI - Как попрощаться с роботом? Исследование достижения разговорного закрытия
ER -
TY - CHAP
AU - Miggelbrink, Monique
ED - Müggenburg, Jan
ID - 47663
T2 - Reichweitenangst. Batterien und Akkus als Medien des Digitalen Zeitalters
TI - Batterien als Medien häuslicher Mobilität: Materialitäten und kulturelle Imaginationen der Überwindung des Zuhauses
ER -
TY - CHAP
AU - Miggelbrink, Monique
ED - Nierhaus, Irene
ED - Heinz, Kathrin
ED - Umbach, Rosanna
ID - 47664
T2 - WohnSeiten. Visuelle Konstruktionen des Wohnens in Zeitschriften
TI - Home Computer: Wohnen mit dem Computer in Einrichtungszeitschriften
ER -
TY - JOUR
AU - Tünnermann, Jan
AU - Scharlau, Ingrid
ID - 31675
IS - 4
JF - The Quantitative Methods of Psychology
TI - Big-M-small-N temporal-oder judgment data
VL - 17
ER -
TY - CHAP
AU - Miggelbrink, Monique
AU - Bartz, Christina
ED - Busse, Laura
ED - Gehrlach, Andreas
ED - Isak, Waldemar
ID - 47709
T2 - Selbstbehältnisse. Orte und Gegenstände der Aufbewahrung von Individualität
TI - Home-Office - Figurationen häuslicher Arbeit
ER -
TY - CHAP
AU - Bartz, Christina
ED - Fan, Jieping
ED - Liu, Yongqiang
ID - 47712
T2 - Bildforschung aus interdisziplinärer Perspektive
TI - Die Gesellschaft im Werbebild. Werbung und das Wissen um Gesellschaft und Telekommunikation
ER -
TY - JOUR
AB - Potassium titanyl phosphate (KTP) is a nonlinear optical material with applications in high-power frequency conversion or quasi-phase matching in submicron period domain grids. A prerequisite for these applications is a precise control and understanding of the poling mechanisms to enable the fabrication of high-grade domain grids. In contrast to the widely used material lithium niobate, the domain growth in KTP is less studied, because many standard methods, such as selective etching or polarization microscopy, provides less insight or are not applicable on non-polar surfaces, respectively. In this work, we present results of confocal Raman-spectroscopy of the ferroelectric domain structure in KTP. This analytical method allows for the visualization of domain grids of the non-polar KTP y-face and therefore more insight into the domain-growth and -structure in KTP, which can be used for improved domain fabrication.
AU - Brockmeier, Julian
AU - Mackwitz, Peter Walter Martin
AU - Rüsing, Michael
AU - Eigner, Christof
AU - Padberg, Laura
AU - Santandrea, Matteo
AU - Silberhorn, Christine
AU - Zrenner, Artur
AU - Berth, Gerhard
ID - 23826
JF - Crystals
SN - 2073-4352
TI - Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging
ER -
TY - CHAP
AU - Schneider, Martin R.
ED - Zimmermann, Klaus F.
ID - 47838
SN - 9783319573656
T2 - Handbook of Labor, Human Resources and Population Economics
TI - Labor-Management Relations and Varieties of Capitalism
ER -
TY - JOUR
AB - AbstractQuantum well (QW) heterostructures have been extensively used for the realization of a wide range of optical and electronic devices. Exploiting their potential for further improvement and development requires a fundamental understanding of their electronic structure. So far, the most commonly used experimental techniques for this purpose have been all-optical spectroscopy methods that, however, are generally averaging in momentum space. Additional information can be gained by angle-resolved photoelectron spectroscopy (ARPES), which measures the electronic structure with momentum resolution. Here we report on the use of extremely low-energy ARPES (photon energy ~ 7 eV) to increase depth sensitivity and access buried QW states, located at 3 nm and 6 nm below the surface of cubic-GaN/AlN and GaAs/AlGaAs heterostructures, respectively. We find that the QW states in cubic-GaN/AlN can indeed be observed, but not their energy dispersion, because of the high surface roughness. The GaAs/AlGaAs QW states, on the other hand, are buried too deep to be detected by extremely low-energy ARPES. Since the sample surface is much flatter, the ARPES spectra of the GaAs/AlGaAs show distinct features in momentum space, which can be reconducted to the band structure of the topmost surface layer of the QW structure. Our results provide important information about the samples’ properties required to perform extremely low-energy ARPES experiments on electronic states buried in semiconductor heterostructures.
AU - Hajlaoui, Mahdi
AU - Ponzoni, Stefano
AU - Deppe, Michael
AU - Henksmeier, Tobias
AU - As, Donat Josef
AU - Reuter, Dirk
AU - Zentgraf, Thomas
AU - Springholz, Gunther
AU - Schneider, Claus Michael
AU - Cramm, Stefan
AU - Cinchetti, Mirko
ID - 25227
JF - Scientific Reports
SN - 2045-2322
TI - Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures
VL - 11
ER -
TY - GEN
AU - Tenberge, Claudia
AU - Gödiker, Manon
ED - PATT38 Organizing Committee , PATT 38
ID - 40476
TI - The ‚teachwodd training concept’ a contribution to the implementation of practical technological learning in primary schools.
ER -
TY - CONF
AB - With its growing population and industrialization, DREs, and solar technologies in particular, provide a
sustainable means of bridging the current energy deficit in Africa, increasing supply reliability and meeting future
demand. Data acquisition and data management systems allow real time monitoring and control of energy systems as
well as performance analysis. However commercial data acquisition systems often have cost implications that are
prohibitive for small PV systems and installations in developing countries.
In this paper, a multi-user, multi-purpose microgrid database system is designed and implemented. MAVOWATT
270 power quality analyzers by GOSSEN METRAWATT, raspberry pi modules and sensors are used for measuring,
recording and storing electrical and meteorological data in East Africa. Socio-economic data is also stored in the
database. The designed system employs open source software and hardware solutions which are best suited to
developing regions like East Africa due to the lower cost implications.
The expected results promise a comprehensive database covering different electro-technical and socio-economic
parameters useful for optimal design of microgrid systems.
AU - Kakande, Josephine Nakato
AU - Philipo, Godiana Hagile
AU - Krauter, Stefan
ID - 24540
KW - Art-D
KW - Afrika
KW - Demand side management
KW - MySQL
KW - Raspberry pi
KW - Data acquisition
SN - 3-936338-78-7
T2 - Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)
TI - Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures
ER -
TY - CHAP
AU - Felder, Ekkehard
AU - Schuster, Britt-Marie
AU - Spranz-Fogasy, Thomas
ED - Iakushevich, Marina
ED - Ilg, Yvonne
ED - Schnedermann, Theresa
ID - 37133
KW - Fachkommunikation
T2 - Linguistik und Medizin
TI - Diagnosen (h)erstellen – Sprachwissenschaftliche Zugänge
ER -
TY - CHAP
AU - Schuster, Britt-Marie
ED - Dang-Anh, Mark
ED - Meer, Dorothee
ED - Wyss, Eva L.
ID - 37132
KW - Kommunikationsgeschichte
T2 - Protest, Protestieren, Protestkommunikation
TI - Widersprechen als diskursive Praktik. Illustriert an der Widerstandskommunikation gegen den Nationalsozialismus (1933–1945)
ER -
TY - CHAP
AU - Schuster, Britt-Marie
AU - Wilk, Nicole M.
ED - Braun, Christian
ID - 37130
KW - Textsemantik
T2 - Sprache des Sterbens – Sprache des Todes. Linguistische und interdisziplinäre Perspektivierungen eines zentralen Aspekts menschlichen Daseins
TI - Bedeutungsvarianz und sozialer Stil
ER -
TY - JOUR
AB - Multi-objective (MO) optimization, i.e., the simultaneous optimization of multiple conflicting objectives, is gaining more and more attention in various research areas, such as evolutionary computation, machine learning (e.g., (hyper-)parameter optimization), or logistics (e.g., vehicle routing). Many works in this domain mention the structural problem property of multimodality as a challenge from two classical perspectives: (1) finding all globally optimal solution sets, and (2) avoiding to get trapped in local optima. Interestingly, these streams seem to transfer many traditional concepts of single-objective (SO) optimization into claims, assumptions, or even terminology regarding the MO domain, but mostly neglect the understanding of the structural properties as well as the algorithmic search behavior on a problem’s landscape. However, some recent works counteract this trend, by investigating the fundamentals and characteristics of MO problems using new visualization techniques and gaining surprising insights. Using these visual insights, this work proposes a step towards a unified terminology to capture multimodality and locality in a broader way than it is usually done. This enables us to investigate current research activities in multimodal continuous MO optimization and to highlight new implications and promising research directions for the design of benchmark suites, the discovery of MO landscape features, the development of new MO (or even SO) optimization algorithms, and performance indicators. For all these topics, we provide a review of ideas and methods but also an outlook on future challenges, research potential and perspectives that result from recent developments.
AU - Grimme, Christian
AU - Kerschke, Pascal
AU - Aspar, Pelin
AU - Trautmann, Heike
AU - Preuss, Mike
AU - Deutz, André H.
AU - Wang, Hao
AU - Emmerich, Michael
ID - 46318
JF - Computers & Operations Research
KW - Multimodal optimization
KW - Multi-objective continuous optimization
KW - Landscape analysis
KW - Visualization
KW - Benchmarking
KW - Theory
KW - Algorithms
SN - 0305-0548
TI - Peeking beyond peaks: Challenges and research potentials of continuous multimodal multi-objective optimization
VL - 136
ER -
TY - CONF
AB - Classic automated algorithm selection (AS) for (combinatorial) optimization problems heavily relies on so-called instance features, i.e., numerical characteristics of the problem at hand ideally extracted with computationally low-demanding routines. For the traveling salesperson problem (TSP) a plethora of features have been suggested. Most of these features are, if at all, only normalized imprecisely raising the issue of feature values being strongly affected by the instance size. Such artifacts may have detrimental effects on algorithm selection models. We propose a normalization for two feature groups which stood out in multiple AS studies on the TSP: (a) features based on a minimum spanning tree (MST) and (b) a k-nearest neighbor graph (NNG) transformation of the input instance. To this end we theoretically derive minimum and maximum values for properties of MSTs and k-NNGs of Euclidean graphs. We analyze the differences in feature space between normalized versions of these features and their unnormalized counterparts. Our empirical investigations on various TSP benchmark sets point out that the feature scaling succeeds in eliminating the effect of the instance size. Eventually, a proof-of-concept AS-study shows promising results: models trained with normalized features tend to outperform those trained with the respective vanilla features.
AU - Heins, Jonathan
AU - Bossek, Jakob
AU - Pohl, Janina
AU - Seiler, Moritz
AU - Trautmann, Heike
AU - Kerschke, Pascal
ED - Computing Machinery Association, for
ID - 46313
T2 - Proceedings of the 16$^th$ ACM/SIGEVO Conference on Foundations of genetic Algorithms (FOGA XVI)
TI - On the Potential of Normalized TSP Features for Automated Algorithm Selection
ER -
TY - CONF
AB - In this work we examine the inner mechanisms of the recently developed sophisticated local search procedure SOMOGSA. This method solves multimodal single-objective continuous optimization problems by first expanding the problem with an additional objective (e.g., a sphere function) to the bi-objective space, and subsequently exploiting local structures and ridges of the resulting landscapes. Our study particularly focusses on the sensitivity of this multiobjectivization approach w.r.t. (i) the parametrization of the artificial second objective, as well as (ii) the position of the initial starting points in the search space.
As SOMOGSA is a modular framework for encapsulating local search, we integrate Gradient and Nelder-Mead local search (as optimizers in the respective module) and compare the performance of the resulting hybrid local search to their original single-objective counterparts. We show that the SOMOGSA framework can significantly boost local search by multiobjectivization. Combined with more sophisticated local search and metaheuristics this may help in solving highly multimodal optimization problems in future.
AU - Aspar, Pelin
AU - Kerschke, Pascal
AU - Steinhoff, Vera
AU - Trautmann, Heike
AU - Grimme, Christian
ED - et al. Ishibuchi, H.
ID - 46311
T2 - Evolutionary Multi-Criterion Optimization: 11$^th$ International Conference, EMO 2021, Shenzhen, China, March 28–31, 2021, Proceedings
TI - Multi^3: Optimizing Multimodal Single-Objective Continuous Problems in the Multi-Objective Space by Means of Multiobjectivization
ER -
TY - JOUR
AB - One of the most significant recent technological developments concerns the development and implementation of ‘intelligent machines’ that draw on recent advances in artificial intelligence (AI) and robotics. However, there are growing tensions between human freedoms and machine controls. This article reports the findings of a workshop that investigated the application of the principles of human freedom throughout intelligent machine development and use. Forty IS researchers from ten different countries discussed four contemporary AI and humanity issues and the most relevant IS domain challenges. This article summarizes their experiences and opinions regarding four AI and humanity themes: Crime & conflict, Jobs, Attention, and Wellbeing. The outcomes of the workshop discussions identify three attributes of humanity that need preservation: a critique of the design and application of AI, and the intelligent machines it can create; human involvement in the loop of intelligent machine decision-making processes; and the ability to interpret and explain intelligent machine decision-making processes. The article provides an agenda for future AI and humanity research.
AU - Coombs, Crispin
AU - Stacey, Patrick
AU - Kawalek, Peter
AU - Simeonova, Boyka
AU - Becker, Jörg
AU - Bergener, Katrin
AU - Carvalho, João Álvaro
AU - Fantinato, Marcelo
AU - Garmann-Johnsen, Niels F.
AU - Grimme, Christian
AU - Stein, Armin
AU - Trautmann, Heike
ID - 46317
JF - International Journal of Information Management
TI - What Is It About Humanity That We Can’t Give Away To Intelligent Machines? A European Perspective
VL - 58
ER -
TY - CONF
AB - We propose a novel method for automated algorithm selection in the domain of single-objective continuous black-box optimization. In contrast to existing methods, we use convolutional neural networks as the selection apparatus which bases its decision on a so-called ‘fitness map’. This fitness map is a 2D representation of a two dimensional search space where different gray scales indicate the quality of found solutions in certain areas. Our devised approach uses a modular CMA-ES framework which offers the option to create the conventional CMA-ES, CMA-ES with the alternate step-size adaptation and many other variants proposed over the years. In total, 4 608 different configurations are possible where most configurations are of complementary nature. In this proof-of-concept work, we consider a subset of 32 possible configurations. The developed method is evaluated against an excerpt of BBOB functions and its performance is compared against baselines that are commonly used in automated algorithm selection - the best standalone algorithm (configuration) and the best obtainable sequence of configurations. While the results indicate that the use of the fitness map is not superior on every benchmark problem, it indubitably shows its merit on more hard-to-solve problems. This offers a promising perspective for generalizing to other types of optimization problems and problem domains.
AU - Prager, Raphael Patrick
AU - Vinzent Seiler, Moritz
AU - Trautmann, Heike
AU - Kerschke, Pascal
ID - 46315
T2 - 2021 IEEE Symposium Series on Computational Intelligence (SSCI)
TI - Towards Feature-Free Automated Algorithm Selection for Single-Objective Continuous Black-Box Optimization
ER -
TY - CONF
AB - Abuse and hate are penetrating social media and many comment sections of news media companies. These platform providers invest considerable efforts to mod- erate user-generated contributions to prevent losing readers who get appalled by inappropriate texts. This is further enforced by legislative actions, which make non-clearance of these comments a punishable action. While (semi-)automated solutions using Natural Language Processing and advanced Machine Learning techniques are getting increasingly sophisticated, the domain of abusive language detection still struggles as large non-English and well-curated datasets are scarce or not publicly available. With this work, we publish and analyse the largest annotated German abusive language comment datasets to date. In contrast to existing datasets, we achieve a high labelling standard by conducting a thorough crowd-based an- notation study that complements professional moderators’ decisions, which are also included in the dataset. We compare and cross-evaluate the performance of baseline algorithms and state-of-the-art transformer-based language models, which are fine-tuned on our datasets and an existing alternative, showing the usefulness for the community.
AU - Assenmacher, Dennis
AU - Niemann, Marco
AU - Müller, Kilian
AU - Seiler, Moritz V.
AU - Riehle, Dennis M.
AU - Trautmann, Heike
ID - 46312
T2 - Proceedings of the Neural Information Processing Systems Track on Datasets and Benchmarks 1 (NeurIPS Datasets and Benchmarks 2021)
TI - RP-Mod & RP-Crowd: Moderator- and Crowd-Annotated German News Comment Datasets
ER -
TY - CHAP
AU - Foerster, Anne
ED - Stieldorf, Andrea
ID - 40922
T2 - Geschlecht macht Herrschaft – Interdisziplinäre Studien zu vormoderner Macht und Herrschaft / Gender Power Sovereignty – Interdisciplinary Studies on Premodern Power
TI - Gender and Authority – The Entanglement of Two Concepts in High Medieval Historiography
VL - 15
ER -
TY - CHAP
AU - Foerster, Anne
ED - Toepfer, Regina
ED - Wahring, Bettina
ID - 40921
T2 - Kinderlosigkeit im Mittelalter
TI - Die Witwenschaft kinderloser Königinnen im Hochmittelalter
VL - 26,2
ER -
TY - GEN
ED - Wille, Manuel
ID - 48342
T2 - die hochschullehre – Jahrgang 7-2021
TI - Erklärvideos in der Sprachwissenschaft – Sprache-Bild-Bezüge und ihr Einfluss auf den Lernerfolg
ER -
TY - CONF
AU - Heitkaemper, Jens
AU - Schmalenstroeer, Joerg
AU - Ion, Valentin
AU - Haeb-Umbach, Reinhold
ID - 24000
T2 - Speech Communication; 14th ITG-Symposium
TI - A Database for Research on Detection and Enhancement of Speech Transmitted over HF links
ER -
TY - JOUR
AU - Hubner-Benz, Sylvia
AU - Rudic, Biljana
AU - Baum, Matthias
ID - 48520
IS - 11
JF - The International Journal of Human Resource Management
KW - Management of Technology and Innovation
KW - Organizational Behavior and Human Resource Management
KW - Strategy and Management
KW - Business and International Management
KW - Industrial relations
SN - 0958-5192
TI - How entrepreneur’s leadership behavior and demographics shape applicant attraction to new ventures: the role of stereotypes
VL - 34
ER -
TY - JOUR
AU - Hubner-Benz, Sylvia
AU - Frese, Michael
AU - Song, Zhaoli
AU - Tripathi, Neha
AU - Kaschner, Tamara
AU - Le Kong, Xing
ID - 48519
JF - Journal of Business Research
KW - Marketing
SN - 0148-2963
TI - An Asia-centric approach to team innovation: Cultural differences in exploration and exploitation behavior
VL - 138
ER -
TY - CHAP
AU - Jacob, Joachim
AU - Süßmann, Johannes
ED - Jacob, Joachim
ED - Süßmann, Johannes
ID - 34976
SN - 978-90-04-33935-4
T2 - The Reception of Antiquity in the Age of Enlightenment. English Edition ed. by Christina C. Harker. Translated by Duncan Alexander Smart
TI - Introduction
VL - 12
ER -
TY - JOUR
AU - Dröse, Jennifer
AU - Prediger, S.
AU - Neugebauer, P.
AU - Danhier, R. D.
AU - Mertins, B.
ID - 45381
JF - International Electronic Journal of Mathematics Education, 16(1), em0625
TI - Investigating students' processes of noticing and interpreting syntactic language features in word problem solving through eye-tracking
ER -
TY - JOUR
AU - Dröse, Jennifer
AU - Prediger, S.
ID - 45380
JF - Studies in Educational Evaluation, 68 (100953)
TI - Identifying obstacles is not enough for everybody – Differential efficacy of an intervention fostering fifth graders’ comprehension for word problems
ER -
TY - JOUR
AU - Korsmeier, Teresa
AU - Bobe, Julia
AU - Klingsieck, Katrin B.
ID - 29135
JF - Zeitschrift für Beratung und Studium
TI - Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting
VL - 16
ER -
TY - CHAP
AU - Spener, Anna Maria
ED - Allirand, Lise
ED - Braucks, Alina
ED - Engelmann-Kewitz, Svenja
ED - Sakalak, Grigoria
ED - Schweda, Charleena
ED - Stöck, Thomas
ID - 48692
T2 - Literatur und das Böse. Beiträge des 10. Studierendenkongress Komparatistik
TI - "Welcome to Night Vale" und/mit Derrida: Lernen, mit den Gespenstern zu leben?
ER -
TY - JOUR
AU - Spener, Anna Maria
ID - 48693
IS - 2
JF - Anafora. Zeitschrift für Literaturwissenschaft
TI - "Meine Trauer war (k)eine Krankheit"? Achronologisches Erzählen einer anhaltenden Trauerstörung in Olga Grjasnowas "Der Russe ist einer, der Birken liebt"
VL - 8
ER -
TY - JOUR
AB - AbstractStudent dropout is a multi-causal process. Different theoretical models on student dropout consider dysfunctional study behavior (e.g., academic procrastination) and low study satisfaction as possible determinants of students’ dropout intentions during their university studies. However, these models neglect contemporary conceptualizations that assume reverse relationships between dropout intentions and other determinants of the dropout process. Until now, empirical evidence on these assumptions is scant. The present three-wave longitudinal study explored the reciprocal relationships between academic procrastination, study satisfaction, and dropout intentions over one semester. To this end, we used data of N = 326 undergraduate students enrolled in mathematics and law. Our latent cross-lagged panel model replicated existing empirical cross-sectional findings between the variables (i.e., academic procrastination, study satisfaction, and dropout intentions). Regarding the longitudinal relations, as expected, the cross-lagged effects showed that higher dropout intentions significantly related to subsequent higher academic procrastination and lower study satisfaction. Unexpectedly, academic procrastination did not significantly relate to subsequent dropout intentions. Additionally, higher study satisfaction significantly associated with subsequent higher dropout intentions—possibly due to unfulfilled expectations. Further, higher study satisfaction significantly related to subsequent higher procrastination—possibly due to more confidence among satisfied students. Our results broaden the view on dropout intentions as part of the dynamic interplay of student dropout determinants and the need to refine dropout models’ assumptions accordingly. Practically, realistic expectations seem important to reduce dropout intentions. Further, student counselors should have a closer look at the reasons for academic procrastination to develop individual solutions for this dysfunctional behavior.
AU - Scheunemann, Anne
AU - Schnettler, Theresa
AU - Bobe, Julia
AU - Fries, Stefan
AU - Grunschel, Carola
ID - 48732
IS - 4
JF - European Journal of Psychology of Education
KW - Developmental and Educational Psychology
KW - Education
SN - 0256-2928
TI - A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education
VL - 37
ER -
TY - CHAP
AB - Marianne Friese/Rita Braches-Chyrek Einführung Marianne Friese Care Work im Spannungsfeld gesellschaftlicher Transformation. Systemische Widersprüche und Entwicklungsperspektiven Berufliche Bildung und Beschäftigungssysteme Denise Becka und Michaela Evans Wohlfahrtsproduktion und Care im digitalen Wandel: Perspektiven für Beruflichkeit in der Pflege Heidrun Herzberg und Peter Alheit Zur Akzeptanz des Konzepts „Community Nurse" im Land Brandenburg: Eine qualitative Vorstudie Karin Reiber, Jan Braun und Jutta Mohr Berufliche Bildung in der Domäne Pflege zwischen Anforderungen des Beschäftigungssystems und individueller berufsbiografischer Entwicklung Philipp Struck Entwicklungs- und Verbesserungsperspektiven für berufliche (Aus-)Bildungsprozesse im Gesundheitswesen Rita Braches-Chyrek Soziale Arbeit: Ausbildung und Beschäftigung Julia Kastrup und Alexandra Brutzer Hauswirtschaft in Zeiten von Corona - Ergebnisse einer Interviewstudie mit Hauswirtschaftlichen Fachkräften Akademische Bildung und Weiterbildung Anna Bobe, Anke Karber und Tobias Moock Theorie und Praxis in sozialpädagogischen Bildungsgängen - Erste Strukturierungsansätze vielfältiger Verhältnisse Manuela Liebig, Mirjam Chris und Annemarie Marx „Am Ball bleiben" - Sensibilisierung für aktuelle Herausforderungen der sozialpädagogischen Praxis durch Arbeitsanalysen im Lehramtsstudium für berufliche Schulen Anja Walter, Martin Fritzenwanker, Martin Karstädt Von Berufsfeldanalysen zum Unterricht - empirisches Material für die Bildungspraxis im Berufsfeld Gesundheit und Pflege nutzen Nina Göddertz „Digitales Praxissemester - kann das überhaupt gut gehen?" - Reflexionen von Lehramtsstudierenden vor und während des Praxissemesters in Zeiten der Covid-19-Pandemie Stephanie Spanu Systemrelevant(e) ausbilden. Berufliches Lehramt, Fachrichtung Sozialpädagogik und die berufliche Bildung: Der Fachkräftemangel als gesellschaftliche Aufgabe Julia Kastrup, Birgit Peuker, Marie Nölle-Krug und Simon Vollmer Gemeinsam innovativ! - Transformative Themenfelder in der lehramtsbezogenen Ausbildung der beruflichen Fachrichtung Ernährung- und Hauswirtschaft standortübergreifend lehren und lernen Ursula Walkenhorst, Annika Lara Schwarze Digitale Transformation in der Hochschullehre - Chancen und Grenzen für die Gesundheitsberufe Dana Bergmann und Astrid Seltrecht Weiterbildungsordnungsarbeit für Pflegeberufe Claudia Schepers, Johanna Krawietz und Jella Fuchs Kollegiale Beratung für die Kitteltasche
AU - Göddertz, Nina
ED - Braches-Chyrek, Rita
ED - Friese, Marianne
ID - 45497
KW - Modernisierung personenbezogener Dienstleistungsberufe Aktueller Forschungsstand
KW - Best Practice und Desiderata
SN - 9783763972616
T2 - Care Work in der gesellschaftlichen Transformation. Beschäftigung, Bildung, Fachdidaktik
TI - Digitales Praxissemester - kann das überhaupt gut gehen?
ER -
TY - CONF
AB - Unsupervised blind source separation methods do not require a training phase
and thus cannot suffer from a train-test mismatch, which is a common concern in
neural network based source separation. The unsupervised techniques can be
categorized in two classes, those building upon the sparsity of speech in the
Short-Time Fourier transform domain and those exploiting non-Gaussianity or
non-stationarity of the source signals. In this contribution, spatial mixture
models which fall in the first category and independent vector analysis (IVA)
as a representative of the second category are compared w.r.t. their separation
performance and the performance of a downstream speech recognizer on a
reverberant dataset of reasonable size. Furthermore, we introduce a serial
concatenation of the two, where the result of the mixture model serves as
initialization of IVA, which achieves significantly better WER performance than
each algorithm individually and even approaches the performance of a much more
complex neural network based technique.
AU - Boeddeker, Christoph
AU - Rautenberg, Frederik
AU - Haeb-Umbach, Reinhold
ID - 44843
T2 - ITG Conference on Speech Communication
TI - A Comparison and Combination of Unsupervised Blind Source Separation Techniques
ER -
TY - CONF
AU - Boeddeker, Christoph
AU - Zhang, Wangyou
AU - Nakatani, Tomohiro
AU - Kinoshita, Keisuke
AU - Ochiai, Tsubasa
AU - Delcroix, Marc
AU - Kamo, Naoyuki
AU - Qian, Yanmin
AU - Haeb-Umbach, Reinhold
ID - 28259
T2 - ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
TI - Convolutive Transfer Function Invariant SDR Training Criteria for Multi-Channel Reverberant Speech Separation
ER -
TY - CONF
AU - Schmalenstroeer, Joerg
AU - Heitkaemper, Jens
AU - Ullmann, Joerg
AU - Haeb-Umbach, Reinhold
ID - 23998
T2 - 29th European Signal Processing Conference (EUSIPCO)
TI - Open Range Pitch Tracking for Carrier Frequency Difference Estimation from HF Transmitted Speech
ER -
TY - GEN
AU - Hartung, Olaf
ID - 48787
T2 - H-Soz-Kult
TI - Rezension von: Jörg van Norden, Thomas Must, Lars Deile, Peter Riedel, Susan Krause und Wanda Schürenberg (Hgg.): Geschichtsdidaktische Grundbegriffe. Ein Bilderbuch für Studium, Lehre und Beruf. Hannover 2020
ER -
TY - JOUR
AB - Due to the ad hoc nature of wireless acoustic sensor networks, the position of the sensor nodes is typically unknown. This contribution proposes a technique to estimate the position and orientation of the sensor nodes from the recorded speech signals. The method assumes that a node comprises a microphone array with synchronously sampled microphones rather than a single microphone, but does not require the sampling clocks of the nodes to be synchronized. From the observed audio signals, the distances between the acoustic sources and arrays, as well as the directions of arrival, are estimated. They serve as input to a non-linear least squares problem, from which both the sensor nodes’ positions and orientations, as well as the source positions, are alternatingly estimated in an iterative process. Given one set of unknowns, i.e., either the source positions or the sensor nodes’ geometry, the other set of unknowns can be computed in closed-form. The proposed approach is computationally efficient and the first one, which employs both distance and directional information for geometry calibration in a common cost function. Since both distance and direction of arrival measurements suffer from outliers, e.g., caused by strong reflections of the sound waves on the surfaces of the room, we introduce measures to deemphasize or remove unreliable measurements. Additionally, we discuss modifications of our previously proposed deep neural network-based acoustic distance estimator, to account not only for omnidirectional sources but also for directional sources. Simulation results show good positioning accuracy and compare very favorably with alternative approaches from the literature.
AU - Gburrek, Tobias
AU - Schmalenstroeer, Joerg
AU - Haeb-Umbach, Reinhold
ID - 22528
JF - EURASIP Journal on Audio, Speech, and Music Processing
SN - 1687-4722
TI - Geometry calibration in wireless acoustic sensor networks utilizing DoA and distance information
ER -
TY - CONF
AU - Gburrek, Tobias
AU - Schmalenstroeer, Joerg
AU - Haeb-Umbach, Reinhold
ID - 23994
T2 - ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
TI - Iterative Geometry Calibration from Distance Estimates for Wireless Acoustic Sensor Networks
ER -
TY - CONF
AU - Gburrek, Tobias
AU - Schmalenstroeer, Joerg
AU - Haeb-Umbach, Reinhold
ID - 23999
T2 - Speech Communication; 14th ITG-Symposium
TI - On Source-Microphone Distance Estimation Using Convolutional Recurrent Neural Networks
ER -
TY - CONF
AU - Chinaev, Aleksej
AU - Enzner, Gerald
AU - Gburrek, Tobias
AU - Schmalenstroeer, Joerg
ID - 23997
T2 - 29th European Signal Processing Conference (EUSIPCO)
TI - Online Estimation of Sampling Rate Offsets in Wireless Acoustic Sensor Networks with Packet Loss
ER -
TY - CHAP
AU - Moritz, Tilman
ED - Kopp, Stefan
ED - Moritz, Tilman
ED - Priesching, Nicole
ID - 49004
T2 - Katholische Konfessionalisierung in Paderborn? Religiöse Prozesse in der Frühen Neuzeit
TI - Seelsorge der Geschichte? Konfessionelle Geschichtspolitik im 17. Jahrhundert am Beispiel der Monumenta Paderbornensia Ferdinands von Fürstenberg
ER -
TY - CHAP
AU - Moritz, Tilman
AU - Kopp, Stefan
AU - Priesching, Nicole
ED - Kopp, Stefan
ED - Moritz, Tilman
ED - Priesching, Nicole
ID - 49002
T2 - Katholische Konfessionalisierung in Paderborn? Religiöse Prozesse in der Frühen Neuzeit
TI - Forschungsperspektiven
ER -
TY - CHAP
AU - Moritz, Tilman
AU - Kopp, Stefan
AU - Priesching, Nicole
ED - Kopp, Stefan
ED - Moritz, Tilman
ED - Priesching, Nicole
ID - 49001
T2 - Katholische Konfessionalisierung in Paderborn? Religiöse Prozesse in der Frühen Neuzeit
TI - Zum Paradigma der Konfessionalisierung
ER -
TY - GEN
AU - Moritz, Tilman
ID - 49017
IS - 10
T2 - sehepunkte
TI - A. Seidler, I. Monok (Hgg.): Reformation und Bücher. Zentren der Ideen – Zentren der Buchproduktion. Wiesbaden 2020
VL - 21
ER -
TY - CHAP
AU - Moritz, Tilman
ED - Kopp, Stefan
ED - Moritz, Tilman
ED - Priesching, Nicole
ID - 49009
T2 - Katholische Konfessionalisierung in Paderborn? Religiöse Prozesse in der Frühen Neuzeit
TI - Das Commentariolum Ferdinands von Fürstenberg – eine lateinisch-deutsche Synopse
ER -
TY - GEN
ED - Kopp, Stefan
ED - Moritz, Tilman
ED - Priesching, Nicole
ID - 49000
SN - 978-3-402-24820-1
TI - Katholische Konfessionalisierung in Paderborn? Religiöse Prozesse in der Frühen Neuzeit
ER -
TY - CHAP
AU - Schulze, Max
ID - 48955
SN - 978-3-95461-206-2
T2 - Joana Dahlhoff: Recherche patiente
TI - Max Schulze vs. Joana Dahlhoff
ER -
TY - JOUR
AU - Krebs, Benjamin
AU - Kabst, Rüdiger
ID - 49097
JF - PERSONALquartely
TI - Shared Leadership: Neue Studien für die Unternehmenspraxis
VL - 4
ER -
TY - CHAP
AU - Wach, Bernhard
AU - Krebs, Benjamin
AU - Kabst, Rüdiger
ED - Schwuchow, K.
ED - Gutmann, J.
ID - 24375
T2 - HR-Trends 2021
TI - HR-Manager als Intrapreneure
ER -
TY - CONF
AB - In this work we address disentanglement of style and content in speech signals. We propose a fully convolutional variational autoencoder employing two encoders: a content encoder and a style encoder. To foster disentanglement, we propose adversarial contrastive predictive coding. This new disentanglement method does neither need parallel data nor any supervision. We show that the proposed technique is capable of separating speaker and content traits into the two different representations and show competitive speaker-content disentanglement performance compared to other unsupervised approaches. We further demonstrate an increased robustness of the content representation against a train-test mismatch compared to spectral features, when used for phone recognition.
AU - Ebbers, Janek
AU - Kuhlmann, Michael
AU - Cord-Landwehr, Tobias
AU - Haeb-Umbach, Reinhold
ID - 29304
T2 - Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
TI - Contrastive Predictive Coding Supported Factorized Variational Autoencoder for Unsupervised Learning of Disentangled Speech Representations
ER -
TY - THES
AU - Acar, Yasemin
ID - 47271
TI - Human Factors in Secure Software Development
ER -
TY - CONF
AU - Huaman, Nicolas
AU - von Skarczinski, Bennet
AU - Stransky, Christian
AU - Wermke, Dominik
AU - Acar, Yasemin
AU - Dreißigacker, Arne
AU - Fahl, Sascha
ED - Bailey, Michael
ED - Greenstadt, Rachel
ID - 47265
T2 - 30th USENIX Security Symposium, USENIX Security 2021, August 11-13, 2021
TI - A Large-Scale Interview Study on Information Security in and Attacks against Small and Medium-sized Enterprises
ER -
TY - CONF
AU - Oltrogge, Marten
AU - Huaman, Nicolas
AU - Amft, Sabrina
AU - Acar, Yasemin
AU - Backes, Michael
AU - Fahl, Sascha
ED - Bailey, Michael
ED - Greenstadt, Rachel
ID - 47264
T2 - 30th USENIX Security Symposium, USENIX Security 2021, August 11-13, 2021
TI - Why Eve and Mallory Still Love Android: Revisiting TLS (In)Security in Android Applications
ER -
TY - CHAP
AU - Öhlschläger, Claudia
AU - Schneider, Martin
ID - 42778
SN - 9783846766088
T2 - Komparatistik heute
TI - Passivität als Widerstand gegen die Macht der Verhältnisse? Melvilles Bartleby, the scrivener aus literaturwissenschaftlicher und ökonomischer Perspektive
ER -
TY - CHAP
AU - Neumann, Anna
ED - Keuchen, Marion
ED - Janus, Richard
ID - 36315
T2 - Musik als Lebensmittel. Kulturwissenschaftlich-theologische Rationen für ein Jahr
TI - Happy clappy heile Welt? Wie angesichts von Krisen und Katastrophen eine schöne Welt besungen werden kann
ER -
TY - CHAP
AU - Neumann, Anna
AU - Katharina, Kammeyer
AU - Vera, Uppenkamp
ED - Keuchen, Marion
ED - Janus, Richard
ID - 36319
T2 - Musk als Lebensmittel
TI - This is my Fight Song
ER -
TY - CHAP
AU - Gretz, Daniela
ED - Gretz, Daniela
ED - Krause, Marcus
ED - Pethes, Nicolas
ID - 49182
T2 - Miszellanes Lesen. Interferenzen zwischen medialen Formaten, Romanstrukturen und Lektürepraktiken im 19. Jahrhundert
TI - Keller, Raabe, Fontane: ›nichts für den Durchschnittsleser‹. Miszellane Lektüren, ›imaginäre Leser‹ und Kanonisierungsprozesse in der Literaturkritik der zeitgenössischen Presse
ER -
TY - BOOK
ED - Gretz, Daniela
ED - Krause, Marcus
ED - Pethes, Nicolas
ID - 49178
TI - Miszellanes Lesen. Interferenzen zwischen medialen Formaten, Romanstrukturen und Lektürepraktiken im 19. Jahrhundert
ER -
TY - JOUR
AU - Häsel-Weide, Uta
AU - Seitz, Simone
AU - Wallner, Melina
AU - Wilke, Yannik
AU - Heckmann, Lara
ID - 31578
IS - 1
JF - QfI - Qualifizierung für Inklusion. Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte
TI - Mit Aufgaben im inklusiven Mathematikunterricht professionell umgehen - Erkenntnisse einer Interviewstudie mit Lehrpersonen der Sekundarstufe
VL - 3
ER -
TY - CONF
AU - Hattermann, Mathias
AU - Häsel-Weide, Uta
AU - Wallner, Melina
ED - Inprasitha, M.
ED - Changsri, N.
ED - Boonsena, N.
ID - 31583
T2 - Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education
TI - Conceptualiziation processes of 6th graders for rotational symmetry
VL - 3
ER -
TY - JOUR
AU - Hoellger, Christian
AU - Sommer, Sabrina
AU - Buhl, Heike M.
ID - 49292
JF - Zeitschrift für Soziologie der Erziehung und Sozialisation
TI - Zusammenhang zwischen familiären Lebenssituationen und Werteähnlichkeiten in der Eltern-Kind-Beziehung im Erwachsenenalter.
VL - 41
ER -
TY - CONF
AB - The first order optimality conditions of optimal control problems (OCPs) can
be regarded as boundary value problems for Hamiltonian systems. Variational or
symplectic discretisation methods are classically known for their excellent
long term behaviour. As boundary value problems are posed on intervals of
fixed, moderate length, it is not immediately clear whether methods can profit
from structure preservation in this context. When parameters are present,
solutions can undergo bifurcations, for instance, two solutions can merge and
annihilate one another as parameters are varied. We will show that generic
bifurcations of an OCP are preserved under discretisation when the OCP is
either directly discretised to a discrete OCP (direct method) or translated
into a Hamiltonian boundary value problem using first order necessary
conditions of optimality which is then solved using a symplectic integrator
(indirect method). Moreover, certain bifurcations break when a non-symplectic
scheme is used. The general phenomenon is illustrated on the example of a cut
locus of an ellipsoid.
AU - Offen, Christian
AU - Ober-Blöbaum, Sina
ID - 22894
KW - optimal control
KW - catastrophe theory
KW - bifurcations
KW - variational methods
KW - symplectic integrators
SN - 2405-8963
TI - Bifurcation preserving discretisations of optimal control problems
VL - 54(19)
ER -
TY - CONF
AU - Ridderbusch, Steffen
AU - Offen, Christian
AU - Ober-Blöbaum, Sina
AU - Goulart, Paul
ID - 21572
T2 - 2021 60th IEEE Conference on Decision and Control (CDC)
TI - Learning ODE Models with Qualitative Structure Using Gaussian Processes
ER -
TY - CONF
AB - We propose a reachability approach for infinite and finite horizon multi-objective optimization problems for low-thrust spacecraft trajectory design. The main advantage of the proposed method is that the Pareto front can be efficiently constructed from the zero level set of the solution to a Hamilton-Jacobi-Bellman equation. We demonstrate the proposed method by applying it to a low-thrust spacecraft trajectory design problem. By deriving the analytic expression for the Hamiltonian and the optimal control policy, we are able to efficiently compute the backward reachable set and reconstruct the optimal trajectories. Furthermore, we show that any reconstructed trajectory will be guaranteed to be weakly Pareto optimal. The proposed method can be used as a benchmark for future research of applying reachability analysis to low-thrust spacecraft trajectory design.
AU - Vertovec, Nikolaus
AU - Ober-Blöbaum, Sina
AU - Margellos, Kostas
ID - 21592
TI - Multi-objective minimum time optimal control for low-thrust trajectory design
ER -
TY - CONF
AU - Jiménez, F.
AU - Ober-Blöbaum, Sina
ID - 29868
T2 - Nichtlineare Sci 31
TI - Fractional Damping Through Restricted Calculus of Variations
VL - 46
ER -
TY - CHAP
AU - Hartung, Olaf
AU - Krebs, Alexandra
AU - Fastlabend-Vargas, Daniel
AU - Meyer-Hamme, Johannes
ED - Caruso, Carina
ED - Harteis, Christian
ED - Gröschner, Alexander
ID - 29838
SN - 9783658325671
T2 - Theorie und Praxis in der Lehrerbildung.Verhältnisbestimmungen aus der Perspektive von Fachdidaktiken
TI - Der steinige Weg vom Wissen zum Können: Zum schwierigen Verhältnis von Theorie und Praxis bei der Betreuung zukünftiger Geschichtslehrkräfte in Langzeitpraktika
ER -
TY - JOUR
AU - Breuer, Saskia Rebecca
ID - 49337
JF - Der Dom. Katholisches Magazin im Erzbistum Paderborn
TI - „Da öffnet er ihnen das Verständnis, sodass sie die Schriften verstanden“ (Lk 24,45)
VL - 47
ER -
TY - JOUR
AB - The field of human-computer interaction (HCI) investigates the intersection between the design of devices and users. From an early focus on interaction modeling based on psychological experiments, the field has since experienced a shift towards the study of how actual humans interact with autonomous devices. The field became conductive to ethnographic, observational and videographic studies of human-device interaction. Conversation-analytic HCI became possible. That said, this new wave of researchers was never truly able to dethrone the psychological common sense of the field. With recent developments in both the technical-sensorial capabilities and outward actuational range of embodied virtual agents, the field of HCI has once again returned to the question of the sequential unfolding of the interaction between users and intelligent agents, and the multimodal interactional repertoire that is deployed throughout. This review will highlight the situational orientation of high-impact research in the field, and relate it to the cotemporaneous development of ethnomethodological and conversation analytic frameworks.
Acknowledgments. The article was prepared in the framework of a research grant funded by the Ministry of Science and Higher Education of the Russian Federation (grant ID: 075-15-2020-908). The article was prepared in cooperation with the Sber (ex. – Sberbank’s) Gamification Lab.
AU - Klowait, Nils
AU - Ерофеева, Мария Александровна
ID - 42670
IS - 1
JF - The monitoring of public opinion economic&social changes
KW - Economics
KW - Econometrics and Finance (miscellaneous)
KW - Sociology and Political Science
SN - 2219-5467
TI - The Rise of Interactional Multimodality in Human-Computer Interaction
ER -
TY - CHAP
AU - Miggelbrink, Monique
AU - Bartz, Christina
ED - Busse, Laura
ED - Gehrlach, Andreas
ED - Waldemar, Isak
ID - 47662
T2 - Selbstbehältnisse. Orte und Gegenstände der Aufbewahrung von Subjektivität
TI - Home-Office. Kulturelle Formationen häuslicher Arbeit
ER -
TY - CONF
AU - Ködding, Patrick
AU - Dumitrescu, Roman
ED - Hartmann, Ernst A.
ID - 21272
T2 - Digitalisisierung souverän gestalten
TI - Forschungsfelder für Künstliche Intelligenz in der strategischen Produktplanung
ER -
TY - JOUR
AU - Meier, F.
AU - Protte, M.
AU - Baron, E.
AU - Feneberg, M.
AU - Goldhahn, R.
AU - Reuter, Dirk
AU - As, Donat Josef
ID - 23843
JF - AIP Advances
SN - 2158-3226
TI - Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001)
ER -