TY - GEN AB - We study the effect of education on health (hospital stays, number of diagnosed conditions, self-rated poor health, and obesity) over the life-cycle in Germany, using compulsory schooling reforms as a source of exogenous variation. Our results suggest a positive correlation of health and education which increases over the life-cycle. We do not, however, find any positive local average treatment effects of an additional year of schooling on health or health care utilization for individuals up to age 79. An exception is obesity, where positive effects of schooling start to be visible around age 60 and become very large in age group 75-79. The results in age group 75-79 need to be interpreted with caution, however, due to small sample size and possible problems of attrition. AU - Schmitz, Hendrik AU - Tawiah, Beatrice Baaba ID - 46534 KW - Education KW - health KW - life-cycle effects KW - compulsory schooling TI - Life-cycle health effects of compulsory schooling VL - 1006 ER - TY - CONF AU - Baci, Alkid AU - Heindorf, Stefan ID - 46575 T2 - CIKM TI - Accelerating Concept Learning via Sampling ER - TY - GEN AU - Freise, Diana AU - Schiele, Valentin AU - Schmitz, Hendrik ID - 46521 KW - General Earth and Planetary Sciences KW - General Environmental Science SN - 1556-5068 TI - Housing Situations and Local COVID-19 Infection Dynamics – A Case Study With Small-Area Data ER - TY - GEN AB - The Koopman operator has become an essential tool for data-driven analysis, prediction and control of complex systems, the main reason being the enormous potential of identifying linear function space representations of nonlinear dynamics from measurements. Until now, the situation where for large-scale systems, we (i) only have access to partial observations (i.e., measurements, as is very common for experimental data) or (ii) deliberately perform coarse graining (for efficiency reasons) has not been treated to its full extent. In this paper, we address the pitfall associated with this situation, that the classical EDMD algorithm does not automatically provide a Koopman operator approximation for the underlying system if we do not carefully select the number of observables. Moreover, we show that symmetries in the system dynamics can be carried over to the Koopman operator, which allows us to massively increase the model efficiency. We also briefly draw a connection to domain decomposition techniques for partial differential equations and present numerical evidence using the Kuramoto--Sivashinsky equation. AU - Peitz, Sebastian AU - Harder, Hans AU - Nüske, Feliks AU - Philipp, Friedrich AU - Schaller, Manuel AU - Worthmann, Karl ID - 46579 T2 - arXiv:2307.15325 TI - Partial observations, coarse graining and equivariance in Koopman operator theory for large-scale dynamical systems ER - TY - GEN AB - We study the effect of education on vaccination against COVID-19 and influenza in Germany and Europe. Our identification strategy makes use of changes in compulsory schooling laws and allows to estimate local average treatment effects for individuals between 59 and 91 years of age. We find no significant effect of an additional year of schooling on vaccination status in Germany. Pooling data from Europe, we conclude that schooling increases the likelihood to vaccinate against COVID by an economically negligible effect of one percentage point (zero for influenza). However, we find indications that additional schooling increases fear of side effects from COVID vaccination. AU - Monsees, Daniel AU - Schmitz, Hendrik ID - 46536 KW - COVID KW - influenza KW - vaccination KW - education KW - compulsory schooling TI - The effect of compulsory schooling on vaccination against COVID and Influenza VL - 1011 ER - TY - CONF AB - One of the main challenges for next generation automotive radars is the improvement of angular resolution to a sub-degree level. In this context, wide aperture automotive radars of 1m length or more and resolution close to 0.1° in azimuth and 0.5° in elevation could be beneficial. To enable coherent processing of arrays with such large aperture, prior (i.e offline) and online calibration are necessary: channel imbalances (gains and phases) and three dimensional coordinates of transmit and receive elements need to be determined. We propose a calibration strategy based on alternating steps between the two subtasks of i) channel imbalance estimation with ‘known’ array positions, by applying a singular value decomposition to the resulting tensor calculus problem; and ii) antenna position estimation with ’known’ channel imbalances, by numerically maximizing the Bayesian posterior probability; in both cases operating on range/Doppler snapshots of disjoint targets (with potentially unknown locations). Simulation studies based on the parameters of a MIMO 8x6 linear sparse array show promising results as long as the initial position errors do not exceed half a wavelength (2mm), beyond which we observe strong effects of ambiguity. Experimental results with real measurements show that after calibration in laboratory conditions, our MIMO 8x6 demonstrator with 50cm aperture is able to resolve two targets at the same range with angular separation at least as close as 0.4°. AU - Greiff, Christian AU - Mateos-Núñez, David AU - Simoni, Renato AU - González-Huici, Maria AU - Kruse, Stephan AU - Scheytt, J. Christoph AU - Kolk, Karl AU - Höller, Christian AU - Kurz, Heiko Gustav AU - Meinecke, Marc-Michael AU - Gisder, Thomas ID - 46426 T2 - 2023 24th International Radar Symposium (IRS) TI - Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions ER - TY - GEN AU - Ostermann, Moritz AU - Behm, Jonathan AU - Marten, Thorsten AU - Tröster, Thomas ID - 42459 T2 - WerkstoffPlus Auto 13. Fachtagung für neue Fahrzeug- und Werkstoffkonzepte TI - NeMo.bil - Dekarbonisierung des Verkehrs mithilfe von Leichtbau-Fahrzeugschwärmen ER - TY - JOUR AU - Kaur, Mannat AU - Ramulu, Harshini Sri AU - Acar, Yasemin AU - Fiebig, Tobias ID - 45984 IS - CSCW1 JF - Proc. ACM Hum. Comput. Interact. TI - "Oh yes! over-preparing for meetings is my jam :)": The Gendered Experiences of System Administrators VL - 7 ER - TY - JOUR AU - Bouma-Sims, Elijah AU - Acar, Yasemin ID - 45983 IS - CSCW1 JF - Proc. ACM Hum. Comput. Interact. TI - Beyond the Boolean: How Programmers Ask About, Use, and Discuss Gender VL - 7 ER - TY - JOUR AU - Vöing, Nerea ID - 46622 JF - Lehren im Leben - Blog der Stiftung Innovation in der Hochschullehre TI - 16 Fragen, 16 Antworten: In unserer Rubrik „Lehren im Leben” stellen wir Menschen vor, die Hochschullehre gestalten. Folge 6: Dr. Nerea Vöing VL - 6 ER - TY - GEN AB - We discuss in which cases the Dunkl convolution of distributions, possibly both with non-compact support, can be defined and study its analytic properties. We prove results on the (singular-)support of Dunkl convolutions. Based on this, we are able to prove a theorem on elliptic regularity for a certain class of Dunkl operators, called elliptic Dunkl operators. Finally, for the root systems of type A we consider the Dunkl-type Riesz distributions, prove that their Dunkl convolution exists and compute their convolution. AU - Brennecken, Dominik ID - 46614 T2 - arXiv:2308.07710 TI - Dunkl convolution and elliptic regularity for Dunkl operators ER - TY - JOUR AU - Vöing, Nerea ID - 46623 JF - Trafohaus//Lehre (Podcast der HD Sachsen) TI - Ein Blick auf Lehre und Lernen in Hochschulen durch die Brille der Hochschuldidaktik" ER - TY - GEN AU - Vöing, Nerea AU - Arnold, Maik AU - Reisas, Sabine ID - 46624 TI - Lehrentwicklung durch Scholarship of Teaching and Learning – mit SoTL Hochschullehre beforschen, weiterentwickeln und teilen ER - TY - JOUR AU - Karakaya, Yasin AU - Somnitz, H. AU - Hermsen, A. AU - Gonchikzhapov, Munko AU - Kasper, Tina ID - 45602 JF - Applications in Energy and Combustion Science KW - Metastable particles KW - Nanomaterials KW - Quartz-crystal-microbalance KW - Molecular-beam mass spectrometry KW - Tetramethylsilane KW - Reaction kinetics SN - 2666-352X TI - Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis VL - 14 ER - TY - CONF AB - New technologies and materials carry significant potential for sustainable production and use of products. As an example, Additive Manufacturing technologies and materials promise lightweight design and energy efficient use of parts. Exhausting the full potential requires: a) consideration of uncertainties with respect to future capabilities, and b) upgradeable design guidelines to cover advancements consistently. The proposed approach merges concepts of Design-for-X with foresight algorithms of Scenario-Technique to derive actionable knowledge. It is validated by an application in the field of Additive Manufacturing, namely Metal Fused Deposition Modelling. Engineers benefit from the intuitive access to heterogeneous types of sustainability related information. AU - Gräßler, Iris AU - Mozgova, Iryna AU - Pottebaum, Jens AU - Ott, Manuel AU - Jung, Philipp AU - Hesse, Philipp ED - Teti, Roberto ID - 46451 KW - Design-for-X KW - Scenario-Technique KW - sustainability KW - uncertainty KW - Life-Cycle Engineering KW - Additive Manufacturing KW - Circular Economy T2 - Procedia CIRP ICME TI - Handling of uncertainties in the design of sustainable Additive Manufacturing products by merging Design-for-X and Scenario-Technique ER - TY - JOUR AB - A reliable, but cost-effective generation of single-photon states is key for practical quantum communication systems. For real-world deployment, waveguide sources offer optimum compatibility with fiber networks and can be embedded in hybrid integrated modules. Here, we present what we believe to be the first chip-size fully integrated fiber-coupled heralded single photon source (HSPS) module based on a hybrid integration of a nonlinear lithium niobate waveguide into a polymer board. Photon pairs at 810 nm (signal) and 1550 nm (idler) are generated via parametric down-conversion pumped at 532 nm in the LiNbO3 waveguide. The pairs are split in the polymer board and routed to separate output ports. The module has a size of (2 × 1) cm^2 and is fully fiber-coupled with one pump input fiber and two output fibers. We measure a heralded second-order correlation function of g_h(2)=0.05 with a heralding efficiency of η_h=3.5% at low pump powers AU - Kießler, Christian AU - Conradi, Hauke AU - Kleinert, Moritz AU - Quiring, Viktor AU - Herrmann, Harald AU - Silberhorn, Christine ID - 46644 IS - 14 JF - Optics Express KW - Atomic and Molecular Physics KW - and Optics SN - 1094-4087 TI - Fiber-coupled plug-and-play heralded single photon source based on Ti:LiNbO3 and polymer technology VL - 31 ER - TY - CHAP AB - SoTL ist eine forschungsbasierte Haltung, die die Hochschullehre verbessern und innovieren will. Das deutschsprachige SoTL-Netzwerk hat fünf Thesen formuliert, die SoTL als Grundhaltung und Motor für Lehrentwicklung betonen. Der Beitrag diskutiert diese Thesen und stellt Aktivitäten des Netzwerks vor, die SoTL an Hochschulen und Universitäten fördern und vernetzen wollen. Dabei wird auch die Rolle der »Teacher-Researcher« hervorgehoben. AU - Arnold, Maik AU - Vöing, Nerea AU - Reisas, Sabine ID - 46647 SN - 2749-7623 T2 - Hochschulbildung: Lehre und Forschung TI - Scholarship of Teaching and Learning (SoTL) als Motor für eine inter- und transdisziplinäre Hochschuldidaktik ER - TY - CONF AU - Weller, Julian AU - Roesmann, Daniel AU - Eggert, Sönke AU - von Enzberg, Sebastian AU - Gräßler, Iris AU - Dumitrescu, Roman ID - 46493 SN - 2212-8271 T2 - Procedia CIRP TI - Identification and prediction of standard times in machining for precision steel tubes through the usage of data analytics VL - 119 ER - TY - CONF AU - Althaus, Maike AU - Grieger, Nicole AU - Vorbohle, Christian AU - Müller, Michelle AU - Kundisch, Dennis ID - 46646 TI - Business Models for Cultural Event Platforms - A Taxonomy Approach ER - TY - GEN AU - Mapura Ramirez, Luz Alejandra AU - Kenig, Eugeny Y. ID - 46591 TI - Zur Berechnug von flüssigkeitsseitigen Stoffübergagnskoeffizienten für Strukturpackungen ER -