TY - GEN
AU - Ali, Osama
ID - 46086
TI - Highly accurate deep compressed facial recognition
ER -
TY - JOUR
AU - Hinrichs, Benjamin
AU - Janssen, Daan W.
AU - Ziebell, Jobst
ID - 46100
IS - 1
JF - Journal of Mathematical Analysis and Applications
KW - Applied Mathematics
KW - Analysis
SN - 0022-247X
TI - Super-Gaussian decay of exponentials: A sufficient condition
VL - 528
ER -
TY - GEN
AU - Leineweber, Jonas
ID - 46102
TI - Tagungsbericht: 10/20 Jahre UNESCO-Konvention zum Erhalt des Immateriellen Kulturerbes – Auftaktveranstaltung zum Doppeljubiläum
ER -
TY - GEN
ED - Papenbrock, Martin
ED - Tophinke, Doris
ID - 45674
T2 - Kunst und Politik
TI - Politisches Graffiti
VL - 24
ER -
TY - CHAP
AU - Husic, Ahmed
ED - Khalilizand, Mansooreh
ID - 45702
T2 - The Attributes of God in Islamic Thought: Contemplating Allah
TI - The Omnipotence (al-qudra) and the Will of God (al-irāda) in the Theology of Sayf ad-Dīn al-Āmidī
ER -
TY - GEN
AU - Ashri, Nivedita
ID - 46110
TI - Virtual On-Demand Volunteer System Based on Delaunay Triangulation
ER -
TY - GEN
AB - Let $X=X_1\times X_2$ be a product of two rank one symmetric spaces of
non-compact type and $\Gamma$ a torsion-free discrete subgroup in $G_1\times
G_2$. We show that the spectrum of $\Gamma \backslash X$ is related to the
asymptotic growth of $\Gamma$ in the two direction defined by the two factors.
We obtain that $L^2(\Gamma \backslash G)$ is tempered for large class of
$\Gamma$.
AU - Weich, Tobias
AU - Wolf, Lasse L.
ID - 46117
T2 - arXiv:2304.09573
TI - Temperedness of locally symmetric spaces: The product case
ER -
TY - CHAP
AU - Kruse, Iris
AU - Kanning, Julian
ED - Kruse, Iris
ED - Kanning, Julian
ID - 42043
SN - 978-3-96848-101-2
T2 - So viel Größenwahn muss sein! Kinderliteratur, Schule und Gesellschaft. Zum Bildungsauftrag des Literaturunterrichts in der Grundschule.
TI - Nie wieder! Plädoyer für eine ‚Fragen-generierende-Didaktik-des-staunenden-Erschreckens‘ mit Kinderliteratur zum Holocaust
ER -
TY - CHAP
AU - Kruse, Iris
AU - Kanning, Julian
ED - Kruse, Iris
ED - Kanning, Julian
ID - 45761
SN - 978-3-96848-101-2
T2 - „So viel Größenwahn muss sein!”
TI - Kinderliteratur und die Bildungsverantwortung des Literaturunterrichts. Kindliches Lesen in individueller und gesellschaftlicher Bedeutung.
ER -
TY - CHAP
AU - Kruse, Iris
AU - Terhorst, Sarah
ED - Kruse, Iris
ED - Kanning, Julian
ID - 45760
SN - 978-3-96848-101-2
T2 - „So viel Größenwahn muss sein!”
TI - Arm und ausgegrenzt. Kinderarmut in der Literatur und im lesenden Klassenzimmer.
ER -
TY - JOUR
AB - Sport-related concussions (SRC) are characterized by impaired autonomic control. Heart rate variability (HRV) offers easily obtainable diagnostic approaches to SRC-associated dysautonomia, but studies investigating HRV during sleep, a crucial time for post-traumatic cerebral regeneration, are relatively sparse. The aim of this study was to assess nocturnal HRV in athletes during their return to sports (RTS) after SRC in their home environment using wireless wrist sensors (E4, Empatica, Milan, Italy) and to explore possible relations with clinical concussion-associated sleep symptoms. Eighteen SRC athletes wore a wrist sensor obtaining photoplethysmographic data at night during RTS as well as one night after full clinical recovery post RTS (>3 weeks). Nocturnal heart rate and parasympathetic activity of HRV (RMSSD) were calculated and compared using the Mann–Whitney U Test to values of eighteen; matched by sex, age, sport, and expertise, control athletes underwent the identical protocol. During RTS, nocturnal RMSSD of SRC athletes (Mdn = 77.74 ms) showed a trend compared to controls (Mdn = 95.68 ms, p = 0.021, r = −0.382, p adjusted using false discovery rate = 0.126) and positively correlated to “drowsiness” (r = 0.523, p = 0.023, p adjusted = 0.046). Post RTS, no differences in RMSSD between groups were detected. The presented findings in nocturnal cardiac parasympathetic activity during nights of RTS in SRC athletes might be a result of concussion, although its relation to recovery still needs to be elucidated. Utilization of wireless sensors and wearable technologies in home-based settings offer a possibility to obtain helpful objective data in the management of SRC.
AU - Delling, Anne Carina
AU - Jakobsmeyer, Rasmus
AU - Coenen, Jessica
AU - Christiansen, Nele
AU - Reinsberger, Claus
ID - 45859
IS - 9
JF - Sensors
KW - Electrical and Electronic Engineering
KW - Biochemistry
KW - Instrumentation
KW - Atomic and Molecular Physics
KW - and Optics
KW - Analytical Chemistry
SN - 1424-8220
TI - Home-Based Measurements of Nocturnal Cardiac Parasympathetic Activity in Athletes during Return to Sport after Sport-Related Concussion
VL - 23
ER -
TY - JOUR
AU - Bopp, Frederik
AU - Schall, Johannes
AU - Bart, Nikolai
AU - Vögl, Florian
AU - Cullip, Charlotte
AU - Sbresny, Friedrich
AU - Boos, Katarina
AU - Thalacker, Christopher
AU - Lienhart, Michelle
AU - Rodt, Sven
AU - Reuter, Dirk
AU - Ludwig, Arne
AU - Wieck, Andreas D.
AU - Reitzenstein, Stephan
AU - Müller, Kai
AU - Finley, Jonathan J.
ID - 46133
IS - 16
JF - Physical Review B
SN - 2469-9950
TI - Coherent driving of direct and indirect excitons in a quantum dot molecule
VL - 107
ER -
TY - JOUR
AU - Littmann, Mario
AU - Reuter, Dirk
AU - As, Donat Josef
ID - 46132
IS - 7
JF - physica status solidi (b)
KW - Condensed Matter Physics
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0370-1972
TI - Remote Epitaxy of Cubic Gallium Nitride on Graphene‐Covered 3C‐SiC Substrates by Plasma‐Assisted Molecular Beam Epitaxy
VL - 260
ER -
TY - CHAP
AU - Kruse, Iris
AU - Kanning, Julian
ED - Kruse, Iris
ED - Kanning, Julian
ID - 46125
SN - 978-3-96848-101-2
T2 - So viel Größenwahn muss sein! Kinderliteratur, Schule und Gesellschaft. Zum Bildungsauftrag des Literaturunterrichts in der Grundschule.
TI - "So viel Größenwahn muss sein!". Zur Einführung.
ER -
TY - JOUR
AB - Zusammenfassung
Einleitung Motorische Symptome bei Morbus Parkinson lassen sich durch
körperliche Aktivität modifizieren. Inwiefern dies auch
für nicht-motorische, autonome Symptome gilt, ist weitaus weniger
bekannt. Die Erkrankung weist zudem eine Vielzahl an geschlechterspezifischen
Unterschieden auf. Epidemiologische Untersuchungen deuten zum Beispiel auf einen
besseren primärpräventiven Effekt durch körperliche
Aktivität bei Männern als bei Frauen hin. Daten zu
geschlechterspezifischen Effekten auf das autonome Nervensystem sind jedoch
limitiert. Im Rahmen der vorliegenden Pilotstudie sollen mögliche
geschlechterspezifische Effekte einer Bewegungsintervention auf
Störungen der hämodynamischen Regulation als Manifestation
nicht-motorischer Symptome untersucht werden. Diese sind aufgrund ihrer oft
gegensätzlichen hypo- und hypertonen Ausprägung schwierig
medikamentös zu behandeln, lassen sich aber gegebenenfalls durch
Bewegungsinterventionen modifizieren.
Methodik Bei 42 Patienten und Patientinnen (Alter: 70,3 Jahre; 24
Männer; 18 Frauen) wurden vor und nach einer mehrwöchigen,
stationären Parkinsonkomplexbehandlung hämodynamische Parameter
in einem Schellongtest untersucht. Mittels anschließender
Regressionsanalyse erfolgte eine Quantifizierung der Abhängigkeit von
den Faktoren Alter, Body Mass Index, Krankheitsdauer, Vorerkrankungen,
Sitzendblutdruck und hypotensiv wirkender Medikamente.
Ergebnis Bei 44% der Männer und 46% der Frauen
traten hämodynamische Regulationsstörungen im Stand und in
Rückenlage mindestens einmal auf. Eine vor Therapiebeginn
präsentierte Regulationsstörung im Stand zeigte sich in keiner
Geschlechtergruppe durch die Parkinsonkomplexbehandlung verändert.
Frauen zeigten zu Therapieende jedoch einen signifikant niedrigeren Blutdruck im
Liegen (p=0,022*). Unabhängig von der Komplextherapie
fiel der Blutdruck in Rückenlage bei Frauen nach Orthostasebelastung
höher aus als davor (vor Therapie: p=0,015 *;
nach Therapie: p=0,021*). Jedes Lebensjahr erhöhte das
Risiko für eine hämodynamische Regulationsstörung in
Rückenlage in der Gesamtgruppe um 12,4% (Regressionskoeffizient
B=0,117; p=0,014 *; Exp(B)=1,124).
Schlussfolgerung Systematische Effekte auf Blutdruckwerte im Rahmen von
Orthostasereaktionen durch eine Parkinsonkomplexbehandlung konnten nicht
nachgewiesen werden. Allerdings zeigte sich bei Frauen nach
Parkinsonkomplexbehandlung eine Senkung der Blutdruckwerte in
Rückenlage. Das scheinbar unsystematische, teils geschlechterspezifische
Auftreten hämodynamischer Regulationsstörungen fordert ein
individualmedizinisch angelegtes Vorgehen im therapeutischen Alltag.
AU - Siche-Pantel, Franziska
AU - Jakobsmeyer, Rasmus
AU - Buschfort, Rüdiger
AU - Mühlenberg, Manfred
AU - Michels, Heinke
AU - Oesterschlink, Julian
AU - Reinsberger, Claus
ID - 46137
IS - 02
JF - B&G Bewegungstherapie und Gesundheitssport
KW - General Medicine
SN - 1613-0863
TI - Geschlechterspezifische Effekte in der bewegungstherapeutischen Behandlung von hämodynamischen Regulationsstörungen bei Morbus Parkinson
VL - 39
ER -
TY - JOUR
AB - This work reports a fully guided setup for single-mode squeezing on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous-wave laser beam is delivered and the squeezed field is collected by single-mode fibers; up to −3.17(9) dB of useful squeezing is available in fibers. To showcase the usefulness of such a fiber-coupled device, we applied the generated squeezed light in a fiber-based phase sensing experiment, showing a quantum enhancement in the signal-to-noise ratio of 0.35 dB. Moreover, our investigation of the effect of photorefraction on the cavity resonance condition suggests that it causes system instabilities at high powers.
AU - Domeneguetti, Renato
AU - Stefszky, Michael
AU - Herrmann, Harald
AU - Silberhorn, Christine
AU - Andersen, Ulrik L.
AU - Neergaard-Nielsen, Jonas S.
AU - Gehring, Tobias
ID - 46138
IS - 11
JF - Optics Letters
KW - Atomic and Molecular Physics
KW - and Optics
SN - 0146-9592
TI - Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing
VL - 48
ER -
TY - JOUR
AU - Brosch, Anian
AU - Tinazzi, Fabio
AU - Wallscheid, Oliver
AU - Zigliotto, Mauro
AU - Böcker, Joachim
ID - 46147
JF - IEEE Transactions on Power Electronics
KW - Electrical and Electronic Engineering
SN - 0885-8993
TI - Finite Set Sensorless Control With Minimum a Priori Knowledge and Tuning Effort for Interior Permanent Magnet Synchronous Motors
ER -
TY - CHAP
AU - Janzen, Thomas
AU - Gabel, Stephan
AU - Gampert, Martha
AU - Matz, Frauke
AU - Reckermann, Julia
ED - Mrohs, Lorenz
ED - Hess, Miriam
ED - Lindner, Konstantin
ED - Schlüter, Julia
ED - Overhage, Sven
ID - 46154
T2 - Digitalisierung in der Hochschullehre – Perspektiven und Gestaltungsoptionen
TI - Das DigitELE Tutorial: Eine digitale Lernumgebung in der Englischdidaktik
ER -
TY - JOUR
AB - The rise of exascale supercomputers has fueled competition among GPU vendors, driving lattice QCD developers to write code that supports multiple APIs. Moreover, new developments in algorithms and physics research require frequent updates to existing software. These challenges have to be balanced against constantly changing personnel. At the same time, there is a wide range of applications for HISQ fermions in QCD studies. This situation encourages the development of software featuring a HISQ action that is flexible, high-performing, open source, easy to use, and easy to adapt. In this technical paper, we explain the design strategy, provide implementation details, list available algorithms and modules, and show key performance indicators for SIMULATeQCD, a simple multi-GPU lattice code for large-scale QCD calculations, mainly developed and used by the HotQCD collaboration. The code is publicly available on GitHub.
AU - Mazur, Lukas
AU - Bollweg, Dennis
AU - Clarke, David A.
AU - Altenkort, Luis
AU - Kaczmarek, Olaf
AU - Larsen, Rasmus
AU - Shu, Hai-Tao
AU - Goswami, Jishnu
AU - Scior, Philipp
AU - Sandmeyer, Hauke
AU - Neumann, Marius
AU - Dick, Henrik
AU - Ali, Sajid
AU - Kim, Jangho
AU - Schmidt, Christian
AU - Petreczky, Peter
AU - Mukherjee, Swagato
ID - 46120
JF - Computer Physics Communications
TI - SIMULATeQCD: A simple multi-GPU lattice code for QCD calculations
ER -
TY - JOUR
AU - Altenkort, Luis
AU - Eller, Alexander M.
AU - Francis, Anthony
AU - Kaczmarek, Olaf
AU - Mazur, Lukas
AU - Moore, Guy D.
AU - Shu, Hai-Tao
ID - 46119
IS - 1
JF - Physical Review D
SN - 2470-0010
TI - Viscosity of pure-glue QCD from the lattice
VL - 108
ER -
TY - JOUR
AU - Bruns, Julia
AU - Hagena, Maike
AU - Gasteiger, Hedwig
ID - 46155
JF - Teaching and Teacher Education
KW - Education
SN - 0742-051X
TI - Professional Development Enacted by Facilitators in the Context of Early Mathematics Education: Scaling up or Dilution of Effects?
VL - 132
ER -
TY - BOOK
ED - Biehler, Rolf
ED - Liebendörfer, Michael
ED - Gueudet, Ghislaine
ED - Rasmussen, Chris
ED - Winsløw, Carl
ID - 46157
SN - 1869-4918
TI - Practice-Oriented Research in Tertiary Mathematics Education
ER -
TY - CHAP
AU - Kostan, Anastassija
ED - Loos, Christian
ED - Stephan, Paul
ID - 46174
T2 - Widerständige Glieder. Der Leib als politischer Standort
TI - Feministische Neomaterialismen: Die ontologische Immanenz und posthumanistische Performativität von Natur, Kultur und Technik
ER -
TY - JOUR
AB - While FPGA accelerator boards and their respective high-level design tools are maturing, there is still a lack of multi-FPGA applications, libraries, and not least, benchmarks and reference implementations towards sustained HPC usage of these devices. As in the early days of GPUs in HPC, for workloads that can reasonably be decoupled into loosely coupled working sets, multi-accelerator support can be achieved by using standard communication interfaces like MPI on the host side. However, for performance and productivity, some applications can profit from a tighter coupling of the accelerators. FPGAs offer unique opportunities here when extending the dataflow characteristics to their communication interfaces.
In this work, we extend the HPCC FPGA benchmark suite by multi-FPGA support and three missing benchmarks that particularly characterize or stress inter-device communication: b_eff, PTRANS, and LINPACK. With all benchmarks implemented for current boards with Intel and Xilinx FPGAs, we established a baseline for multi-FPGA performance. Additionally, for the communication-centric benchmarks, we explored the potential of direct FPGA-to-FPGA communication with a circuit-switched inter-FPGA network that is currently only available for one of the boards. The evaluation with parallel execution on up to 26 FPGA boards makes use of one of the largest academic FPGA installations.
AU - Meyer, Marius
AU - Kenter, Tobias
AU - Plessl, Christian
ID - 38041
JF - ACM Transactions on Reconfigurable Technology and Systems
KW - General Computer Science
SN - 1936-7406
TI - Multi-FPGA Designs and Scaling of HPC Challenge Benchmarks via MPI and Circuit-Switched Inter-FPGA Networks
ER -
TY - CHAP
AU - Topalović, Elvira
AU - Drepper, Laura
AU - Härtel, Kira
ED - Bangel, Melanie
ED - Rautenberg, Iris
ID - 46180
T2 - Schriftspracherwerb im Spannungsfeld zwischen Wissen und Können
TI - Lerngegenstand „Doppelkonsonanz“ in der Grundschule: Explizites und implizites Lernen im Längsschnitt
ER -
TY - CHAP
AU - Hansmeier, Tim
AU - Kenter, Tobias
AU - Meyer, Marius
AU - Riebler, Heinrich
AU - Platzner, Marco
AU - Plessl, Christian
ED - Haake, Claus-Jochen
ED - Meyer auf der Heide, Friedhelm
ED - Platzner, Marco
ED - Wachsmuth, Henning
ED - Wehrheim, Heike
ID - 45893
T2 - On-The-Fly Computing -- Individualized IT-services in dynamic markets
TI - Compute Centers I: Heterogeneous Execution Environments
VL - 412
ER -
TY - CONF
AU - Opdenhövel, Jan-Oliver
AU - Plessl, Christian
AU - Kenter, Tobias
ID - 46190
T2 - Proceedings of the 13th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies
TI - Mutation Tree Reconstruction of Tumor Cells on FPGAs Using a Bit-Level Matrix Representation
ER -
TY - CONF
AU - Faj, Jennifer
AU - Kenter, Tobias
AU - Faghih-Naini, Sara
AU - Plessl, Christian
AU - Aizinger, Vadym
ID - 46188
T2 - Proceedings of the Platform for Advanced Scientific Computing Conference
TI - Scalable Multi-FPGA Design of a Discontinuous Galerkin Shallow-Water Model on Unstructured Meshes
ER -
TY - CONF
AU - Prouveur, Charles
AU - Haefele, Matthieu
AU - Kenter, Tobias
AU - Voss, Nils
ID - 46189
T2 - Proceedings of the Platform for Advanced Scientific Computing Conference
TI - FPGA Acceleration for HPC Supercapacitor Simulations
ER -
TY - CHAP
AB - We present a concept for quantifying evaluative phrases to later compare rating texts numerically instead of just relying on stars or grades. We achievethis by combining deep learning models in an aspect-based sentiment analysis pipeline along with sentiment weighting, polarity, and correlation analyses that combine deep learning results with metadata. The results provide new insights for the medical field. Our application domain, physician reviews, shows that there are millions of review texts on the Internet that cannot yet be comprehensively analyzed because previous studies have focused on explicit aspects from other domains (e.g., products). We identify, extract, and classify implicit and explicit aspect phrases equally from German-language review texts. To do so, we annotated aspect phrases representing reviews on numerous aspects of a physician, medical practice, or practice staff. We apply the best performing transformer model, XLM-RoBERTa, to a large physician review dataset and correlate the results with existing metadata. As a result, we can show different correlations between the sentiment polarity of certain aspect classes (e.g., friendliness, practice equipment) and physicians’ professions (e.g., surgeon, ophthalmologist). As a result, we have individual numerical scores that contain a variety of information based on deep learning algorithms that extract textual (evaluative) information and metadata from the Web.
AU - Kersting, Joschka
AU - Geierhos, Michaela
ED - Cuzzocrea, Alfredo
ED - Gusikhin, Oleg
ED - Hammoudi, Slimane
ED - Quix, Christoph
ID - 46205
SN - 1865-0929
T2 - Data Management Technologies and Applications
TI - Towards Comparable Ratings: Quantifying Evaluative Phrases in Physician Reviews
VL - 1860
ER -
TY - JOUR
AU - Ficara, Elena
AU - Beall, Jc
ID - 46209
IS - 2
JF - History and Philosophy of Logic
TI - Hegelian Conjunction, Hegelian Contradiction
VL - 44
ER -
TY - JOUR
AU - Ficara, Elena
AU - Priest, Graham
ID - 46210
IS - 2
JF - History and Philosophy of Logic
TI - The Formalization of Dialectics
VL - 44
ER -
TY - JOUR
AU - Weber, Daniel
AU - Schenke, Maximilian
AU - Wallscheid, Oliver
ID - 46213
JF - IEEE Access
KW - General Engineering
KW - General Materials Science
KW - General Computer Science
KW - Electrical and Electronic Engineering
SN - 2169-3536
TI - Steady-State Error Compensation for Reinforcement Learning-Based Control of Power Electronic Systems
VL - 11
ER -
TY - CONF
AU - Weber, Daniel
AU - Schenke, Maximilian
AU - Wallscheid, Oliver
ID - 46212
T2 - 2023 International Conference on Future Energy Solutions (FES)
TI - Safe Reinforcement Learning-Based Control in Power Electronic Systems
ER -
TY - JOUR
AB - Ernährungsarmut wird als Problem in Deutschland weitgehend vernachlässigt. Von materieller Ernährungsarmut betroffen sind Menschen, denen es aufgrund fehlender finanzieller Mittel nicht möglich ist, sich gesundheitsfördernd zu ernähren. Etwa 3,5 % der Bevölkerung (rund drei Millionen Menschen) sind durch materielle Ernährungsarmut gefährdet. Damit einher geht oft auch soziale Ernährungsarmut, die Menschen von der sozialen Teilhabe ausschließt, die z. B. durch gemeinsames Essen ermöglicht wird. Essen ist nicht nur von Bedeutung für die körperliche Gesundheit, sondern auch zentral für die psychische Gesundheit und das Wohlbefinden sowie für die soziale Zugehörigkeit, was sich wiederum auf die körperliche Gesundheit auswirkt. Die sozialen Funktionen des Essens werden vielfach übersehen – und bei der Berechnung des Regelbedarfs ausgeblendet. Gerade die Corona-Pandemie hat gezeigt, wie fehlende soziale Kontakte und sozialer Ausschluss sich auf die physische, psychische und soziale Gesundheit auswirken können. Aus Sicht des WBAE (Wissenschaftliche Beirat für Agrarpolitik, Ernährung und gesundheitlichen Verbraucherschutz) ist deshalb der integrative Blick auf die materielle und soziale Ernährungsarmut zentral, da sie sich gegenseitig verstärken können. Diese Stellungnahme befasst sich mit der Frage, wie sich die Corona-Pandemie auf von Ernährungsarmut gefährdete Menschen ausgewirkt hat und was daraus gelernt werden kann. Ein wichtiger Aspekt ist der zeitweilige Wegfall von Essensangeboten in Kitas, Schulen, Tafeln und anderen karitativen Essensangeboten, die ein Sicherheitsnetz für Menschen in Ernährungsarmut darstellen. Die Stellungnahme zieht auf dieser Basis auch Schluss-folgerungen zur Ernährungsarmut außerhalb von Pandemiebedingungen. Im Hinblick auf die Notwendigkeit der Vermeidung von Fehlernährung in Haushalten, die von Ernährungsarmut bedroht sind, kommt der WBAE zu dem Schluss, dass diese Risikogruppe während der Pandemie nicht ausreichend im Fokus der Maßnahmen zur Abmilderung der Pandemiefolgen stand. Dies zeigt sich schon daran, dass kaum Daten erhoben wurden. Deutschland verfügt über kein klares Indikatoren- und Zielsystem und kein Monitoring zur Ernährungsarmut. Die wenigen vorhandenen Daten weisen auf problematische Entwicklungen hin. Insgesamt wurden durch den Bund sehr umfangreiche Mittel zur Bewältigung der wirtschaftlichen und sozialen Folgen der Corona-Pandemie und zur Einkommenssicherung während der Pandemie eingesetzt. Dies ist unter dem Blickwinkel „Ernährungsarmut” positiv zu bewerten. Es ist davon auszugehen, dass diese Maßnahmen verhindert haben, dass noch mehr Haushalte von Ernährungsarmut betroffen waren. Insgesamt zeigt die Analyse jedoch, dass es kaum gezielte Maßnahmen gab, um den Ausfall von Kita- und Schulernährung durch alternative Formen der Bereitstellung von Lebensmitteln oder einer warmen Mahlzeit aufzufangen. Maßnahmen auf Bundesebene fehlten, um Länder, Kommunen und nicht-staatliche Organisationen dabei zu unterstützen. Auswertungen der Pandemiemaßnahmen vergleichbarer Länder zeigen, dass dort schnelle und flexible Maßnahmen zur Bereitstellung von Lebensmitteln eine wichtige Rolle gespielt haben, um armutsgefährdete Haushalte zu unterstützen. In Deutschland wurden vorwiegend finanzielle Transfers genutzt, z. T. zeitlich verzögert und wenig zielgruppenspezifisch. Vor diesem Hintergrund hat der WBAE mögliche Maßnahmen gegen Ernährungsarmut – in Krisen, aber auch generell – untersucht: (1) finanzielle Transfers (einmalig oder fortlaufend), (2) Lebensmittelgutscheine („Voucher“), (3) Lebensmittelpakete und (4) warme Mahlzeiten, wobei die letzten beiden Optionen jeweils zur Abholung oder zur Auslieferung angeboten werden können. Die untersuchten internationalen Beispiele zeigen Möglichkeiten, wie z. T. mit schnellen und teilweise innovativen Ansätzen auf Lockdown-Maßnahmen reagiert wurde. Im Grundsatz spricht aus Sicht des WBAE aber vieles für das deutsche System zur Bekämpfung der Ernährungsarmut, das im Kern auf einem Bürgergeld beruht. Ein solches Bürgergeld muss jedoch ausreichend sein, um materielle und soziale Ernährungsarmut zu vermeiden. Die aktuellen, im Bürgergeld für Essen und Getränke zur Verfügung stehenden Beträge entsprechen allerdings nicht diesem Anspruch. Bei der Einführung des Bürgergelds im Jahr 2023 wurde zwar zeitnah auf die hohe Inflation reagiert. Die Berechnungsmethodik für die Bedarfsermittlung wurde aber nicht angepasst, sodass der Regelsatz nach wie vor nicht für eine gesundheitsfördernde Ernährung ausreicht. Die soziale Funktion von Ernährung wird bei der Berechnung des Regelsatzes nicht berücksichtigt. Um bei akutem Handlungsbedarf, wie z. B. auch bei der derzeitigen Inflation, schneller reagieren zu können, sollten außerdem Systeme zur Auszahlung sozial differenzierter „Krisentransfers” an vulnerable Haushalte mit geringem Verwaltungsaufwand ermöglicht werden. Darüber hinaus sollte für den zentralen Bereich der Kinder-ernährung der Schutz einer adäquaten Grundsicherung durch einen Systemwechsel zu einer integrativen, beitragsfreien und somit nicht-diskriminierenden Kita- und Schulverpflegung ergänzt werden, die zudem den DGE-Qualitätsstandards entspricht. Schließlich sollte der Staat privates, ehrenamtliches Engagement ergänzend fördern, z. B. durch Infrastrukturunterstützung bei karitativen Essensangeboten. Eine Herausforderung der Gestaltung von karitativen Lebensmittelangeboten besteht darin, dass sie oft als stigmatisierend und beschämend wahrgenommen werden und der Nachweis eines Anspruches teils schwierig ist. Zudem bestehen oft nur wenige Wahlmöglichkeiten, sodass individuelle Präferenzen oder Unverträglichkeiten nur sehr eingeschränkt berücksichtigt werden können. Im Hinblick auf die soziale Dimension der Ernährung kommt hinzu, dass wichtige soziale Funktionen des Essens, wie das gemeinsame Essen, also Kommensalität, nicht oder nur sehr eingeschränkt ermöglicht wird. Auch bleiben diejenigen, die versorgt werden, dabei meist unter sich. Vor dem Hintergrund dieser Gesamteinschätzung empfiehlt der WBAE die folgenden, in Abbildung Z 1 dargestellten Maßnahmen (siehe Beitrag). Zusammenfassend betont der WBAE die in Deutschland weiterhin unterschätzten Risiken materieller und sozialer Ernährungsarmut. Im Rahmen der geplanten Nationalen Ernährungsstrategie der Bundesregierung sollte dem Thema Ernährungsarmut aus Sicht des WBAE eine herausgehobene Bedeutung zugemessen werden.
AU - Birner, Regina
AU - Linseisen, Jakob
AU - Arens-Azevedo, Ulrike
AU - Balmann, Alfons
AU - Biesalski, Hans Konrad
AU - Bosy-Westphal, Anja
AU - Buyken, Anette
AU - Döring, Thomas
AU - Feindt, Peter
AU - Götz, Kay-Uwe
AU - Iweala, Sarah
AU - Martínez, José
AU - Nieberg, Hiltrud
AU - Nöthlings, Ute
AU - Pischetsrieder, Monika
AU - Renner, Britta
AU - Spiller, Achim
AU - Voget-Kleschin, Lieske
AU - Weingarten, Peter
AU - Wesseler, Justus
AU - Wieck, Christine
ID - 46214
JF - Berichte über Landwirtschaft
TI - Ernährungsarmut unter Pandemiebedingungen
ER -
TY - JOUR
AU - Renner, Britta
AU - Buyken, Anette
AU - Gedrich, Kurt
AU - Lorkowski, Stefan
AU - Watzl, Bernhard
AU - Linseisen, Jakob
AU - Daniel, Hannelore
AU - Conrad, Johanna
AU - Ferrario, Paola G.
AU - Holzapfel, Christina
AU - Leitzmann, Michael
AU - Richter, Margrit
AU - Simon, Marie-Christine
AU - Sina, Christian
AU - Wirsam, Jan
ID - 46217
JF - Advances in Nutrition
KW - Nutrition and Dietetics
KW - Medicine (miscellaneous)
KW - Food Science
SN - 2161-8313
TI - Perspective: A Conceptual Framework for Adaptive Personalized Nutrition Advice Systems
ER -
TY - CONF
AU - Kaufhold, Marc-André
AU - Bayer, Markus
AU - Bäumler, Julian
AU - Reuter, Christian
AU - Stieglitz, Stefan
AU - Basyurt, Ali Sercan
AU - Mirbabaie, Milad
AU - Fuchß, Christoph
AU - Eyilmez, Kaan
ID - 46216
T2 - Mensch und Computer
TI - CYLENCE: Strategies and Tools for Cross-Media Reporting, Detection, and Treatment of Cyberbullying and Hatespeech in Law Enforcement Agencies
ER -
TY - GEN
AU - Lienen, Christian
AU - Nowosad, Alexander Philipp
AU - Platzner, Marco
ID - 46229
TI - Mapping and Optimizing Communication in ROS 2-based Applications on Configurable System-on-Chip Platforms
ER -
TY - GEN
AU - N., N.
ID - 46221
TI - Improving the End-of-Line Test of Custom-Built Geared Motors using Clustering based on Neural Networks
ER -
TY - JOUR
AU - Demir, Caglar
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46243
JF - ECML-PKDD
TI - Clifford Embeddings – A Generalized Approach for Embedding in Normed Algebras
ER -
TY - JOUR
AU - Demir, Caglar
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46251
JF - International Joint Conference on Artificial Intelligence
TI - Neuro-Symbolic Class Expression Learning
ER -
TY - JOUR
AU - Ma, Yulai
AU - Mattiolo, Davide
AU - Steffen, Eckhard
AU - Wolf, Isaak Hieronymus
ID - 46256
IS - 3
JF - SIAM Journal on Discrete Mathematics
KW - General Mathematics
SN - 0895-4801
TI - Pairwise Disjoint Perfect Matchings in r-Edge-Connected r-Regular Graphs
VL - 37
ER -
TY - CONF
AU - Meier, Jana
AU - Vogelsang, Christoph
AU - Küth, Simon
AU - Scholl , Daniel
AU - Watson, Christina
AU - Seifert, Andreas
ID - 46261
TI - Welche Rolle spielt eine reflexive Haltung für eine qualitätsvolle Unterrichtsreflexion? – Zusammenhänge zwischen einer quasi-experimentellen Einstellung und der Reflexionsperformanz von Lehramtsstudierenden [Einzelbeitrag].
ER -
TY - CONF
AU - Scholl, Daniel
AU - Küth, Simon
AU - Vogelsang, Christoph
AU - Meier, Jana
AU - Watson, Christina
AU - Seifert, Andreas
ID - 46262
TI - Das Unterrichtsplanungsprinzip der Interdependenz – Eine netzwerkanalytische Untersuchung der Begründungsstrukturen beim Planungsentscheiden [Einzelbeitrag].
ER -
TY - CONF
AU - Scholl, Daniel
AU - Vogelsang, Christoph
AU - Küth, Simon
AU - Meier, Jana
AU - Watson, Christina
AU - Seifert, Andreas
ID - 46263
TI - Eine reflexive Haltung als Grundlage einer hochwertigen Unterrichtsreflexion? Zusammenhänge zwischen einer quasi-experimentellen Einstellung zur Reflexion und der Reflexionsperformanz von Lehramtsstudierenden [Einzelbeitrag].
ER -
TY - GEN
ED - Meier, Jana
ED - Küth, Simon
ED - Scholl , Daniel
ED - Vogelsang, Christoph
ED - Watson, Christina
ID - 46260
TI - Der Zyklus von Planung und Reflexion. Zusammenhänge zwischen der generischen Unterrichtsplanungsfähigkeit und der Reflexionskompetenz angehender Lehrkräfte.
ER -
TY - CONF
AB - State-of-the-art LLC resonant converters use MOSFETs in their inverter stage, which allows high switching frequencies and thus the use of compact magnetic components. The large parasitic output capacitance and the poor reverse-recovery behaviour of the inherent body diode of high-voltage (600 V) silicon MOSFETs require soft switching, i.e. zero-voltage switching (ZVS). Otherwise, the high turn-on switching losses would lead to excessive heating and ultimately to the destruction of the switch. Therefore, MOSFET-based LLC converters are operated in the so-called inductive region only, which enables ZVS. The use of robust and cost-effective IGBTs instead of MOSFETs is particularly advantageous for automotive applications, since in addition to high reliability low costs are an important objective here. Since IGBTs are characterized by dominant turn-off losses and generally higher switching losses compared to MOSFETs, the aim is to operate them with zero-current switching (ZCS) and at low switching frequencies below the resonance frequency. In this region also the voltage transfer characteristic is steeper, which qualifies for applications with a strongly varying input-to-output voltage ratio, such as given for automotive on-board DC-DC converters connecting the (high-voltage) traction battery with the (12 V) auxiliary battery. In this paper, a stress value analysis based on a switched-model simulation is used to design a ZCS LLC converter and take advantage of the mentioned benefits of IGBTs as well as of the steeper voltage transfer characteristic. Within this operation region below the resonance frequency, however, a new phenomenon of several current pulses occurring during a single switching period through the rectifier components may appear. Generally, in applications with high output currents a synchronous rectifier (SR) is often used to keep the conduction losses of the rectifier stage at a moderate level: Low-voltage MOSFETs, which actively need to be gated synchronously to the polarity of the current pulses, are employed then instead of more lossy rectifier diodes. However, standard SR driver ICs have been shown to be unable to properly rectify the multi-pulse output currents of the proposed LLC operation, resulting in high conduction losses of the rectifier stage. A cost-effective hardware concept is presented which ensures proper rectification by using standard SR-ICs that are actively overdriven by the converter’s central microcontroller. A 2 kW prototype for an EV on-board DC-DC converter was built to show the effectiveness of the method, documenting an increase in efficiency by up to 4.1 % compared to a purely SR-IC-based solution. Overall efficiency is very similar to that of a conventional (MOSFET-based) LLC converter so that the ZCS-operated LLC IGBT-converter represents a cost-effective alternative, which even shows 10 % less worst-case losses.
AU - Urbaneck, Daniel
AU - Schafmeister, Frank
AU - Böcker, Joachim
ID - 46269
KW - LLC Converter
KW - IGBT
KW - ZCS
KW - Synchronous Rectification
T2 - PCIM Europe 2023
TI - Advanced Synchronous Rectification for an IGBT-Based ZCS LLC Converter with High Output Currents for a 2 kW Automotive DC-DC Stage
ER -
TY - CONF
AB - The computation of electron repulsion integrals (ERIs) over Gaussian-type orbitals (GTOs) is a challenging problem in quantum-mechanics-based atomistic simulations. In practical simulations, several trillions of ERIs may have to be
computed for every time step.
In this work, we investigate FPGAs as accelerators for the ERI computation. We use template parameters, here within the Intel oneAPI tool flow, to create customized designs for 256 different ERI quartet classes, based on their orbitals. To maximize data reuse, all intermediates are buffered in FPGA on-chip memory with customized layout. The pre-calculation of intermediates also helps to overcome data dependencies caused by multi-dimensional recurrence
relations. The involved loop structures are partially or even fully unrolled for high throughput of FPGA kernels. Furthermore, a lossy compression algorithm utilizing arbitrary bitwidth integers is integrated in the FPGA kernels. To our
best knowledge, this is the first work on ERI computation on FPGAs that supports more than just the single most basic quartet class. Also, the integration of ERI computation and compression it a novelty that is not even covered by CPU or GPU libraries so far.
Our evaluation shows that using 16-bit integer for the ERI compression, the fastest FPGA kernels exceed the performance of 10 GERIS ($10 \times 10^9$ ERIs per second) on one Intel Stratix 10 GX 2800 FPGA, with maximum absolute errors around $10^{-7}$ - $10^{-5}$ Hartree. The measured throughput can be accurately explained by a performance model. The FPGA kernels deployed on 2 FPGAs outperform similar computations using the widely used libint reference on a two-socket server with 40 Xeon Gold 6148 CPU cores of the same process technology by factors up to 6.0x and on a new two-socket server with 128 EPYC 7713 CPU cores by up to 1.9x.
AU - Wu, Xin
AU - Kenter, Tobias
AU - Schade, Robert
AU - Kühne, Thomas
AU - Plessl, Christian
ID - 43228
T2 - 2023 IEEE 31st Annual International Symposium on Field-Programmable Custom Computing Machines (FCCM)
TI - Computing and Compressing Electron Repulsion Integrals on FPGAs
ER -
TY - JOUR
AB - The non-orthogonal local submatrix method applied to electronic structure–based molecular dynamics simulations is shown to exceed 1.1 EFLOP/s in FP16/FP32-mixed floating-point arithmetic when using 4400 NVIDIA A100 GPUs of the Perlmutter system. This is enabled by a modification of the original method that pushes the sustained fraction of the peak performance to about 80%. Example calculations are performed for SARS-CoV-2 spike proteins with up to 83 million atoms.
AU - Schade, Robert
AU - Kenter, Tobias
AU - Elgabarty, Hossam
AU - Lass, Michael
AU - Kühne, Thomas
AU - Plessl, Christian
ID - 45361
JF - The International Journal of High Performance Computing Applications
KW - Hardware and Architecture
KW - Theoretical Computer Science
KW - Software
SN - 1094-3420
TI - Breaking the exascale barrier for the electronic structure problem in ab-initio molecular dynamics
ER -
TY - JOUR
AB - Site-controlled Ga droplets on AlGaAs substrates are fabricated using area-selective deposition of Ga through apertures in a mask during molecular beam epitaxy (MBE). The Ga droplets can be crystallized into GaAs quantum dots using a crystallization step under As flux. In order to model the complex process, including the masked deposition of the droplets and a reduction of their number during a thermal annealing step, a multiscale kinetic Monte Carlo (mkMC) simulation of self-assembled Ga droplet formation on AlGaAs is expanded for area-selective deposition. The simulation has only two free model parameters: the activation energy for surface diffusion and the activation energy for thermal escape of adatoms from a droplet. Simulated droplet numbers within the opening of the aperture agree quantitatively with the experimental results down to the perfect site-control, with one droplet per aperture. However, the model parameters are different compared to those of the self-assembled droplet growth. We attribute this to the presence of the mask in close proximity to the surface, which modifies the local process temperature and the As background. This approach also explains the dependence of the model parameters on the size of the aperture.
AU - Feddersen, Stefan
AU - Zolatanosha, Viktoryia
AU - Alshaikh, Ahmed
AU - Reuter, Dirk
AU - Heyn, Christian
ID - 46278
IS - 3
JF - Nanomaterials
KW - General Materials Science
KW - General Chemical Engineering
SN - 2079-4991
TI - Modeling of Masked Droplet Deposition for Site-Controlled Ga Droplets
VL - 13
ER -
TY - JOUR
AU - Sieland, Benedikt
AU - Stahn, Marcel
AU - Schoch, Roland
AU - Daniliuc, Constantin
AU - Spicher, Sebastian
AU - Grimme, Stefan
AU - Hansen, Andreas
AU - Paradies, Jan
ID - 46277
JF - Angewandte Chemie International Edition
KW - General Chemistry
KW - Catalysis
SN - 1433-7851
TI - Dispersion Energy‐Stabilized Boron and Phosphorus Lewis Pairs
ER -
TY - CONF
AU - Clausing, Lennart
AU - Guetattfi, Zakarya
AU - Kaufmann, Paul
AU - Lienen, Christian
AU - Platzner, Marco
ID - 45913
T2 - Proceedings of the 19th International Symposium on Applied Reconfigurable Computing (ARC)
TI - On Guaranteeing Schedulability of Periodic Real-time Hardware Tasks under ReconOS64
ER -
TY - CHAP
AU - Tophinke, Doris
ED - Feilke, Helmuth
ID - 46099
T2 - Zwischen Fake und Fakt
TI - "Tankrabatt" und "Freiheitsenergie". Wie der Blog "neusprech.org" politische Euphemismen entlarvt
VL - 300
ER -
TY - JOUR
AU - Merten, Marie-Luis
AU - Wever, Marcel
AU - Tophinke, Doris
AU - Geierhos, Michaela
AU - Hüllermeier, Eyke
ID - 45673
JF - International Journal of Corpus Linguistics
TI - Annotation uncertainty in the context of grammatical change
ER -
TY - THES
AU - Tornede, Alexander
ID - 45780
TI - Advanced Algorithm Selection with Machine Learning: Handling Large Algorithm Sets, Learning From Censored Data, and Simplyfing Meta Level Decisions
ER -
TY - THES
AU - Spiess-Bru, Clarissa
ID - 46296
TI - Information Asymmetry and Gendered Behavior in Organizations and Digital Markets
ER -
TY - CONF
AB - A frequency-flexible Nyquist pulse synthesizer is presented with optical pulse bandwidths up to fopt=100 GHz and repetition rates equal to fopt/9, fabricated in an electronic-photonic co-integrated platform utilizing linear on-chip drivers.
AU - Kress, Christian
AU - Schwabe, Tobias
AU - Silberhorn, Christine
AU - Scheytt, J. Christoph
ID - 45578
T2 - Conference on Lasers and Electro-Optics (CLEO) 2023
TI - Generation of 100 GHz Periodic Nyquist Pulses using Cascaded Mach-Zehnder Modulators in a Silicon Electronic-Photonic Platform
ER -
TY - JOUR
AU - Homt, Martina
AU - Bloh, Bea
ID - 46354
IS - 1
JF - Lehrerbildung auf dem Prüfstand
TI - Der formelle Diskurs Forschenden Lernens in der Lehrerbildung. Ein Blick zurück nach vorn
VL - 16
ER -
TY - CHAP
AU - Ksouri-Gerwien, Christoph
AU - Vorbohle, Christian
ED - Schallmo, D.R.A.
ED - Kundisch, Dennis
ED - Lang, K.
ID - 37704
T2 - Digitale Plattformen und Ökosysteme im B2B-Bereich
TI - Anwendung von System Dynamics zur Geschäftsmodellinnovation in einem B2B-Ökosystem
ER -
TY - CONF
AB - Effect chain modelling is a method for creating information
models for impact analyses of changes in system elements. For
the estimation of change propagation, dependencies between
requirements must be detected. The high number of require-
ment dependencies in the engineering of complex technical
systems results in the need for automation. In a study, it was
shown that transformer models (BERT) are suitable for the
automated dependency analysis of requirements. However,
there are currently deficits in the applicability of the models
for different projects without an extensive and heterogeneous
training database. This paper investigates how active learning
can be used to train BERT models (active-BERT) in order to
increase the performance of the models for classifying requi-
rement dependencies of projects with heterogeneous require-
ments. The results show that the performance of the models
increases significantly through active learning. Through active-
BERT, engineers are enabled to model effect chains efficiently
and to handle requirement changes effectively.
AU - Gräßler, Iris
AU - Preuß, Daniel
ED - Hölzle, Katharina
ED - Kreimeyer, Matthias
ED - Roth, Daniel
ED - Maier, Thomas
ED - Riedel, Oliver
ID - 45661
SN - 2364-4885
T2 - Stuttgarter Symposium für Produktentwicklung SSP 2023
TI - Automatisierte Abhängigkeitsanalyse von Anforderungen zur Wirkkettenmodellierung
ER -
TY - BOOK
AU - Fuchs, Christian
ID - 42949
SN - 9781032362724
TI - Digital Democracy and the Digital Public Sphere
VL - 6
ER -
TY - GEN
AB - Effective photoinduced charge transfer makes molecular bimetallic assemblies attractive for applications as active light induced proton reduction systems. For a more sustainable future, development of competitive base metal dyads is mandatory. However, the electron transfer mechanisms from the photosensitizer to the proton reduction catalyst in base metal dyads remain so far unexplored. We study a Fe-Co dyad that exhibits photocatalytic H2 production activity using femtosecond X-ray emission spectroscopy, complemented by ultrafast optical spectroscopy and theoretical time-dependent DFT calculations, to understand the electronic and structural dynamics after photoexcitation and during the subsequent charge transfer process from the FeII photosensitizer to the cobaloxime catalyst. Using this novel approach, the simultaneous measurement of the transient Kalpha X-ray emission at the iron and cobalt K-edges in a two-colour experiment is enabled making it possible to correlate the excited state dynamics to the electron transfer processes. The methodology, therefore, provides a clear and direct spectroscopic evidence of the Fe->Co electron transfer responsible for the proton reduction activity.
AU - Nowakowski, Michał
AU - Huber-Gedert, Marina
AU - Elgabarty, Hossam
AU - Kubicki, Jacek
AU - Kertem, Ahmet
AU - Lindner, Natalia
AU - Khakhulin, Dimitry
AU - Lima, Frederico Alves
AU - Choi, Tae-Kyu
AU - Biednov, Mykola
AU - Piergies, Natalia
AU - Zalden, Peter
AU - Kubicek, Katerina
AU - Rodriguez-Fernandez, Angel
AU - Salem, Mohammad Alaraby
AU - Kühne, Thomas
AU - Gawelda, Wojciech
AU - Bauer, Matthias
ID - 40982
T2 - arxiv
TI - Ultrafast two-colour X-ray emission spectroscopy reveals excited state landscape in a base metal dyad
ER -
TY - CONF
AB - The article shows how to learn models of dynamical systems from data which are governed by an unknown variational PDE. Rather than employing reduction techniques, we learn a discrete field theory governed by a discrete Lagrangian density $L_d$ that is modelled as a neural network. Careful regularisation of the loss function for training $L_d$ is necessary to obtain a field theory that is suitable for numerical computations: we derive a regularisation term which optimises the solvability of the discrete Euler--Lagrange equations. Secondly, we develop a method to find solutions to machine learned discrete field theories which constitute travelling waves of the underlying continuous PDE.
AU - Offen, Christian
AU - Ober-Blöbaum, Sina
ED - Nielsen, F
ED - Barbaresco, F
ID - 42163
KW - System identification
KW - discrete Lagrangians
KW - travelling waves
T2 - Geometric Science of Information
TI - Learning discrete Lagrangians for variational PDEs from data and detection of travelling waves
VL - 14071
ER -
TY - JOUR
AB - The principle of least action is one of the most fundamental physical principle. It says that among all possible motions connecting two points in a phase space, the system will exhibit those motions which extremise an action functional. Many qualitative features of dynamical systems, such as the presence of conservation laws and energy balance equations, are related to the existence of an action functional. Incorporating variational structure into learning algorithms for dynamical systems is, therefore, crucial in order to make sure that the learned model shares important features with the exact physical system. In this paper we show how to incorporate variational principles into trajectory predictions of learned dynamical systems. The novelty of this work is that (1) our technique relies only on discrete position data of observed trajectories. Velocities or conjugate momenta do not need to be observed or approximated and no prior knowledge about the form of the variational principle is assumed. Instead, they are recovered using backward error analysis. (2) Moreover, our technique compensates discretisation errors when trajectories are computed from the learned system. This is important when moderate to large step-sizes are used and high accuracy is required. For this,
we introduce and rigorously analyse the concept of inverse modified Lagrangians by developing an inverse version of variational backward error analysis. (3) Finally, we introduce a method to perform system identification from position observations only, based on variational backward error analysis.
AU - Ober-Blöbaum, Sina
AU - Offen, Christian
ID - 29240
JF - Journal of Computational and Applied Mathematics
KW - Lagrangian learning
KW - variational backward error analysis
KW - modified Lagrangian
KW - variational integrators
KW - physics informed learning
SN - 0377-0427
TI - Variational Learning of Euler–Lagrange Dynamics from Data
VL - 421
ER -
TY - JOUR
AB - The numerical solution of an ordinary differential equation can be interpreted as the exact solution of a nearby modified equation. Investigating the behaviour of numerical solutions by analysing the modified equation is known as backward error analysis. If the original and modified equation share structural properties, then the exact and approximate solution share geometric features such as the existence of conserved quantities. Conjugate symplectic methods preserve a modified symplectic form and a modified Hamiltonian when applied to a Hamiltonian system. We show how a blended version of variational and symplectic techniques can be used to compute modified symplectic and Hamiltonian structures. In contrast to other approaches, our backward error analysis method does not rely on an ansatz but computes the structures systematically, provided that a variational formulation of the method is known. The technique is illustrated on the example of symmetric linear multistep methods with matrix coefficients.
AU - McLachlan, Robert
AU - Offen, Christian
ID - 29236
IS - 1
JF - Journal of Geometric Mechanics
KW - variational integrators
KW - backward error analysis
KW - Euler--Lagrange equations
KW - multistep methods
KW - conjugate symplectic methods
TI - Backward error analysis for conjugate symplectic methods
VL - 15
ER -
TY - JOUR
AB - Recently, Hamiltonian neural networks (HNN) have been introduced to incorporate prior physical knowledge when
learning the dynamical equations of Hamiltonian systems. Hereby, the symplectic system structure is preserved despite
the data-driven modeling approach. However, preserving symmetries requires additional attention. In this research, we
enhance the HNN with a Lie algebra framework to detect and embed symmetries in the neural network. This approach
allows to simultaneously learn the symmetry group action and the total energy of the system. As illustrating examples,
a pendulum on a cart and a two-body problem from astrodynamics are considered.
AU - Dierkes, Eva
AU - Offen, Christian
AU - Ober-Blöbaum, Sina
AU - Flaßkamp, Kathrin
ID - 37654
IS - 6
JF - Chaos
SN - 1054-1500
TI - Hamiltonian Neural Networks with Automatic Symmetry Detection
VL - 33
ER -
TY - CHAP
AU - Dehmel, Lukas
ED - Kondratjuk, Maria
ID - 46473
T2 - Grundlagen der Erwachsenen- und Weiterbildungsforschung
TI - 6.3.2 Medienpädagogische Professionalisierung in der beruflichen Weiterbildung. Eine Studie aus Perspektive der biografischen Medienforschung. Steckbrief zur Dissertation.
ER -
TY - JOUR
AU - Unterstell, Rembert
ID - 46471
IS - 1
JF - german research – Magazine of the Deutsche Forschungsgemeinschaft
TI - „Allowing the Economy to Breathe Even During the Crisis“ – Interview with Tax Expert Caren Sureth-Sloane
ER -
TY - GEN
ED - Ade, Larissa
ED - Breiwe, René
ED - Dehmel, Lukas
ED - Wolf, Karsten D.
ED - Rummler, Klaus
ED - Dander, Valentin
ED - Grünberger, Nina
ED - Schiefner-Rohs, Mandy
ID - 46474
IS - 53
TI - ENT | GRENZ | UNGEN in der Medienpädagogik. Perspektiven im Anschluss an den 28. Kongress der DGfE
ER -
TY - JOUR
AU - Dehmel, Lukas
AU - Meister, Dorothee
AU - Gerhardts, Lara
ID - 46472
IS - 53
JF - Zeitschrift MedienPädagogik
TI - Die Entgrenzung von Kommunikationskulturen in Lehrpersonenkollegien. Reflexion einer unbeabsichtigten Begleiterscheinung der Arbeit mit Tablets.
ER -
TY - CHAP
AB - Dieser Beitrag bietet verschiedene professionelle Perspektiven auf den popmusikalischen Kommunikationsprozesses innerhalb postdigitaler Popmusikjournalismuskulturen. Neben einer wissenschaftlichen Rahmung, Übersicht und Strukturierung des Untersuchungsfelds und des Forschungsstands versammelt der Beitrag multiperspektivische Thesen, die journalistische Praktiken und ihre Reflexionen von Produktion über Distribution und Rezeption/Nutzung bis zur Weiterverarbeitung inklusive Archivierung/Institutionalisierung/Musealisierung aufgreifen und herausstellen. Die aufgestellten Thesen gelten als Aufschlag für die zukünftige Analyse des so fundamentalen und doch auch immer wieder übersehenen Berufsfeldes und seiner Rezeption zwischen Faszination und Exploitation.
AU - Godlewsky, Tanja
AU - Jacke, Christoph
AU - Roenneke, Stefanie
AU - Venker, Thomas
ED - Moormann, Peter
ED - Ruth, Nicolas
ID - 46475
SN - 2626-6199
T2 - Musik und Internet. Aktuelle Phänomene populärer Kulturen
TI - Pop(musik)journalismen zwischen Printmagazin-Krise und postdigitaler Realität – Forschungsüberblick und multiperspektivische Thesen
ER -
TY - CONF
AB - Abstract. Increasing resource efficiency is a major challenge and affects almost every aspect of social and economic life. The mobility sector in particular is responsible for a large share of primary energy consumption and is increasingly in the focus of public interest. One possibility to adress these challenges is to reduce the vehicle weight by means of lightweight construction technologies such as multi-material systems. These assemblies consist of workpieces with different mechanical and geometrical properties, which poses a major challenge for joining technology. Mechanical joining processes such as semi-tubular self-piercing riveting are often used in the production of these assemblies, but due to their process characteristics, they are rigid and can only react to changing process variables to a limited extent. One way to increase the versatility of self-piercing riveting is to superimpose a tumbling kinematics on the punch. During tumbling, an angular offset of the punch axis to the tool axis is set and the contact area between punch and workpiece is reduced. In this work, investigations were carried out to determine how the tumbling strategy, consisting of the parameters tumbling angle, tumbling onset and tumbling kinematics, affects the material flow of the rivet element. For this purpose, experimental tests are conducted with the typical materials of conventional multi-material systems and the geometric joint formations are determined by means of macrographs.
AU - Wituschek, S.
AU - Elbel, L.
AU - Lechner, M.
ID - 46476
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Versatile self-piercing riveting with a tumbling superimposed punch
ER -
TY - JOUR
AU - Lange, Nina Amelie
AU - Schapeler, Timon
AU - Höpker, Jan Philipp
AU - Protte, Maximilian
AU - Bartley, Tim
ID - 46468
IS - 2
JF - Physical Review A
SN - 2469-9926
TI - Degenerate photons from a cryogenic spontaneous parametric down-conversion source
VL - 108
ER -
TY - JOUR
AU - Bartelheimer, Christian
AU - zur Heiden, Philipp
AU - Berendes, Carsten Ingo
AU - Beverungen, Daniel
ID - 46478
JF - European Journal of Information Systems
KW - Library and Information Sciences
KW - Information Systems
SN - 0960-085X
TI - Designing digital actor engagement platforms for local high streets: an action design research study
ER -
TY - THES
AB - Ever increasing demands on the performance of microchips are leading to ever more complex semiconductor technologies with ever shrinking feature sizes. Complex applications with high demands on safety and reliability, such as autonomous driving, are simultaneously driving the requirements for test and diagnosis of VLSI circuits. Throughout the life cycle of a microchip, uncertainties occur that affect its timing behavior. For example, weak circuit structures, aging effects, or process variations can lead to a change in the timing behavior of the circuit. While these uncertainties do not necessarily lead to a change of the functional behavior, they can lead to a reliability problem.
With modular and hybrid compaction two test instruments are presented in this work that can be used for X-tolerant test response compaction in the built-in Faster-than-At-Speed Test (FAST) which is used to detect uncertainties in VLSI circuits. One challenge for test response compaction during FAST is the high and varying X-rate at the outputs of the circuit under test. By dividing the circuit outputs into test groups and separately compacting these test groups using stochastic compactors, the modular compaction is able to handle these high and varying X-rates.
To deal with uncertainties on logic interconnects, a method for distinguishing crosstalk and process variation is presented. In current semiconductor technologies, the number of parasitic coupling capacitances between logic interconnects is growing. These coupling capacitances can lead to crosstalk, which causes increased current flow in the logic interconnects, which in turn can lead to increased electromigration. In the presented method, delay maps describing the timing behavior of the circuit outputs at different operating points are used to train artificial neural networks which classify the tested circuits into fault-free and faulty.
AU - Sprenger, Alexander
ID - 46482
KW - Testantwortkompaktierung
KW - Prozessvariation
KW - Silicon Lifecycle Management
TI - Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen
ER -
TY - CONF
AB - We present a miniaturized pulse shaping device that creates an arbitrary dispersion through the interaction of multiple metasurfaces on less than 2 mm3 volume. For this, a metalens and a grating-metasurface between two silver mirrors are fabricated. The grating contains further phase information to achieve the device's pulse shaping functionality.
AU - Geromel, René
AU - Georgi, Philip
AU - Protte, Maximilian
AU - Bartley, Tim
AU - Huang, Lingling
AU - Zentgraf, Thomas
ID - 46485
T2 - CLEO: Fundamental Science 2023
TI - Dispersion control with integrated plasmonic metasurfaces
ER -
TY - JOUR
AB - We present the fabrication of strain-free quantum dots in the In0.53Ga0.47As/In0.52Al0.48As-system lattice matched to InP, as future sources for single and entangled photons for long-haul fiber-based quantum communication in the optical C-band. We achieved these quantum dots by local droplet etching via InAl droplets in an In0.52Al0.48As layer and subsequent filling of the holes with In0.53Ga0.47As. Here, we present detailed investigations of the hole morphologies measured by atomic force microscopy. Statistical analysis of a set of nanoholes reveals a high degree of symmetry for nearly half of them when etched at optimized temperatures. Overgrowth with 50–150 nm In0.52Al0.48As increases their diameter and elongates the holes along the [01̄1]-direction. By systematically scanning the parameter space, we were able to fill the holes with In0.53Ga0.47As, and by capping the filled holes and performing photoluminescence measurements, we observe photoluminescence emission in the O-band up into the C-band depending on the filling height of the nanoholes.
AU - Deutsch, D.
AU - Buchholz, C.
AU - Zolatanosha, V.
AU - Jöns, K. D.
AU - Reuter, D.
ID - 44851
IS - 5
JF - AIP Advances
KW - General Physics and Astronomy
SN - 2158-3226
TI - Telecom C-band photon emission from (In,Ga)As quantum dots generated by filling nanoholes in In0.52Al0.48As layers
VL - 13
ER -
TY - JOUR
AU - Müller, Hendrik
AU - Weinberger, Christian
AU - Grundmeier, Guido
AU - de los Arcos de Pedro, Maria Teresa
ID - 46480
JF - Journal of Electron Spectroscopy and Related Phenomena
KW - Physical and Theoretical Chemistry
KW - Spectroscopy
KW - Condensed Matter Physics
KW - Atomic and Molecular Physics
KW - and Optics
KW - Radiation
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0368-2048
TI - UV-enhanced environmental charge compensation in near ambient pressure XPS
VL - 264
ER -
TY - JOUR
AU - Pfeifer, Florian
AU - Knorr, Lukas
AU - Schlosser, Florian
AU - Marten, Thorsten
AU - Tröster, Thomas
ID - 46486
IS - 3
JF - Journal of Sustainable Development of Energy, Water and Environment Systems
KW - Energy Engineering and Power Technology
KW - Water Science and Technology
KW - Environmental Science (miscellaneous)
KW - Renewable Energy
KW - Sustainability and the Environment
SN - 1848-9257
TI - Ecological and Economic Feasibility of Inductive Heating for Sustainable Press Hardening Processes
VL - 11
ER -
TY - CONF
AU - Elsner, Julia
AU - Tenberge, Claudia
AU - Fechner, Sabine
ED - van Vorst, Helena
ID - 45371
T2 - Lernen, Lehren und Forschen in einer digital geprägten Welt
TI - Videoanalyse des Modellierprozesses von Grundschüler*innen
VL - 43
ER -
TY - GEN
AU - Kundisch, Dennis
ID - 46491
TI - #DIGITALENTS - Digital Talents Programm geht in die zweite Runde
VL - 1
ER -
TY - JOUR
AU - Kempkes, J. P.
AU - Kreuzhage, K.
AU - Kundisch, Dennis
AU - Seutter, Janina
AU - Weskamp, Christoph
ID - 45656
JF - Kultur Management Network Magazin
TI - Digitale Transformation im Theater – Mittels Besucherforschung und Entscheidungsunterstützung zur besseren Angebotsgestaltung
VL - 172
ER -
TY - CONF
AU - Gräßler, Iris
AU - Wiechel, Dominik
ID - 46502
T2 - 2023 18th Annual System of Systems Engineering Conference (SoSe)
TI - Customized impact analyses for technical engineering changes
ER -
TY - JOUR
AB -
Purpose
The purpose of this study is to investigate the manufacturability of Fe-3Si lattice structures and the resulting mechanical properties. This study could lead to the successful processing of squirrel cage conductors (a lattice structure by design) of an induction motor by additive manufacturing in the future.
Design/methodology/approach
The compression behaviour of two lattice structures where struts are arranged in a face-centred cubic position and vertical edges (FCCZ), and struts are placed at body-centred cubic (BCC) positions, prepared by laser powder bed fusion (LPBF), is explored. The experimental investigations are supported by finite element method (FEM) simulations.
Findings
The FCCZ lattice structure presents a peak in the stress-strain curve, whereas the BCC lattice structure manifests a plateau. The vertical struts aligned along the compression direction lead to a significant increase in the load-carrying ability of FCCZ lattice structures compared to BCC lattice structures. This results in a peak in the stress-strain curve. However, the BCC lattice structure presents the bending of struts with diagonal struts carrying the major loads with struts near the faceplate receiving the least load. A high concentration of geometrically necessary dislocations (GNDs) near the grain boundaries along cell formation is observed in the microstructure.
Originality/value
To the best of the authors’ knowledge, this is the first study on additive manufacturing of Fe-3Si lattice structures. Currently, there are no investigations in the literature on the manufacturability and mechanical properties of Fe-3Si lattice structures.
AU - Pramanik, Sudipta
AU - Hoyer, Kay-Peter
AU - Schaper, Mirko
ID - 46503
IS - 6
JF - Rapid Prototyping Journal
KW - Industrial and Manufacturing Engineering
KW - Mechanical Engineering
SN - 1355-2546
TI - Experimental and finite element method investigation on the compression behaviour of FCCZ and BCC lattice structures of additively manufactured Fe-3Si samples
VL - 29
ER -
TY - JOUR
AU - Pramanik, Sudipta
AU - Milaege, Dennis
AU - Hein, Maxwell
AU - Andreiev, Anatolii
AU - Schaper, Mirko
AU - Hoyer, Kay-Peter
ID - 46507
IS - 14
JF - Advanced Engineering Materials
KW - Condensed Matter Physics
KW - General Materials Science
SN - 1438-1656
TI - An Experimental and Computational Modeling Study on Additively Manufactured Micro‐Architectured Ti–24Nb–4Zr–8Sn Hollow‐Strut Lattice Structures
VL - 25
ER -
TY - GEN
AU - Andreiev, Anatolii
AU - Hoyer, Kay-Peter
AU - Hengsbach, Florian
AU - Haase, Michael
AU - Schaper, Mirko
ID - 46504
TI - Powder Bed Fusion of Soft-Magnetic Iron-Silicon-Based Alloys: Advantages and Challenges
ER -
TY - CONF
AB - Purpose: Data integration and applications across knowledge graphs (KGs) rely heavily on the discovery of links between resources within these KGs. Geospatial link discovery algorithms have to deal with millions of point sets containing billions of points.
Methodology: To speed up the discovery of geospatial links, we propose COBALT. COBALT combines the content measures with R-tree indexing. The content measures are based on the area, diagonal and distance of the minimum bounding boxes of the polygons which speeds up the process but is not perfectly accurate. We thus propose two polygon splitting approaches for improving the accuracy of COBALT.
Findings: Our experiments on real-world datasets show that COBALT is able to speed up the topological relation discovery over geospatial KGs by up to 1.47 × 104 times over state-of-the-art linking algorithms while maintaining an F-Measure between 0.7 and 0.9 depending on the relation. Furthermore, we were able to achieve an F-Measure of up to 0.99 by applying our polygon splitting approaches before applying the content measures.
Value: The process of discovering links between geospatial resources can be significantly faster by sacrificing the optimality of the results. This is especially important for real time data-driven applications such as emergency response, location-based services and traffic management. In future work, additional measures, like the location of polygons or the name of the entity represented by the polygon, could be integrated to further improve the accuracy of the results.
AU - Becker, Alexander
AU - Ahmed, Abdullah Fathi Ahmed
AU - Sherif, Mohamed
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46514
KW - ahmed becker dice ngonga sail sherif
T2 - SEMANTiCS
TI - COBALT: A Content-Based Similarity Approach for Link Discovery over Geospatial Knowledge Graphs
ER -
TY - JOUR
AU - Ahmed, Abdullah Fathi
AU - Sherif, Mohamed Ahmed
AU - Ngomo, Axel-Cyrille Ngonga
ID - 46517
JF - IEEE Access
KW - General Engineering
KW - General Materials Science
KW - General Computer Science
KW - Electrical and Electronic Engineering
SN - 2169-3536
TI - NELLIE: Never-Ending Linking for Linked Open Data
ER -
TY - CHAP
AB - Linked knowledge graphs build the backbone of many data-driven applications such as search engines, conversational agents and e-commerce solutions. Declarative link discovery frameworks use complex link specifications to express the conditions under which a link between two resources can be deemed to exist. However, understanding such complex link specifications is a challenging task for non-expert users of link discovery frameworks. In this paper, we address this drawback by devising NMV-LS, a language model-based verbalization approach for translating complex link specifications into natural language. NMV-LS relies on the results of rule-based link specification verbalization to apply continuous training on T5, a large language model based on the Transformerarchitecture. We evaluated NMV-LS on English and German datasets using well-known machine translation metrics such as BLUE, METEOR, ChrF++ and TER. Our results suggest that our approach achieves a verbalization performance close to that of humans and outperforms state of the art approaches. Our source code and datasets are publicly available at https://github.com/dice-group/NMV-LS.
AU - Ahmed, Abdullah Fathi Ahmed
AU - Firmansyah, Asep Fajar
AU - Sherif, Mohamed
AU - Moussallem, Diego
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46516
SN - 0302-9743
T2 - Natural Language Processing and Information Systems
TI - Explainable Integration of Knowledge Graphs Using Large Language Models
ER -
TY - CONF
AU - Vogelsang, Christoph
AU - Janzen, Thomas
AU - Meier, Jana
AU - Wotschel, Philipp
ID - 46522
TI - „Die Prüfungen werden mich sicherlich nicht zu einer besseren Lehrkraft machen.“ Wie beurteilen Studierende Prüfungen und Feedback im Lehramtsstudium?
ER -
TY - CONF
AU - Wotschel, Philipp
AU - Vogelsang, Christoph
AU - Janzen, Thomas
AU - Meier, Jana
ID - 46524
TI - Als Lehrkraft gut beraten? Entwicklung und Erprobung eines handlungsnahen Prüfungsformates zur Erfassung von Beratungskompetenz von Lehramtsstudierenden
ER -
TY - CONF
AB - Purpose: This study addresses the limitations of current short abstracts of DBpedia entities, which often lack a comprehensive overview due to their creating method (i.e., selecting the first two-three sentences from the full DBpedia abstracts).
Methodology: We leverage pre-trained language models to generate abstractive summaries of DBpedia abstracts in six languages (English, French, German, Italian, Spanish, and Dutch). We performed several experiments to assess the quality of generated summaries by language models. In particular, we evaluated the generated summaries using human judgments and automated metrics (Self-ROUGE and BERTScore). Additionally, we studied the correlation between human judgments and automated metrics in evaluating the generated summaries under different aspects: informativeness, coherence, conciseness, and fluency.
Findings: Pre-trained language models generate summaries more concise and informative than existing short abstracts. Specifically, BART-based models effectively overcome the limitations of DBpedia short abstracts, especially for longer ones.
Moreover, we show that BERTScore and ROUGE-1 are reliable metrics for assessing the informativeness and coherence of the generated summaries with respect to the full DBpedia abstracts. We also find a negative correlation between conciseness and human ratings. Furthermore, fluency evaluation remains challenging without human judgment.
Value: This study has significant implications for various applications in machine learning and natural language processing that rely on DBpedia resources. By providing succinct and comprehensive summaries, our approach enhances the quality of DBpedia abstracts and contributes to the semantic web community
AU - Zahera, Hamada Mohamed Abdelsamee
AU - Vitiugin, Fedor
AU - Sherif, Mohamed
AU - Castillo, Carlos
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46518
KW - dice enexa kiam ngonga porque sherif zahera
T2 - SEMANTiCS
TI - Using Pre-trained Language Models for Abstractive DBpedia Summarization: A Comparative Study
ER -
TY - DATA
AB - Graffiti is an urban phenomenon that is increasingly attracting the interest of the sciences. To the best of our knowledge, no suitable data corpora are available for systematic research until now. The Information System Graffiti in Germany project (Ingrid) closes this gap by dealing with graffiti image collections that have been made available to the project for public use. Within Ingrid, the graffiti images are collected, digitized and annotated. With this work, we aim to support the rapid access to a comprehensive data source on Ingrid targeted especially by researchers. In particular, we present IngridKG, an RDF knowledge graph of annotated graffiti, abides by the Linked Data and FAIR principles. We weekly update IngridKG by augmenting the new annotated graffiti to our knowledge graph. Our generation pipeline applies RDF data conversion, link discovery and data fusion approaches to the original data. The current version of IngridKG contains 460,640,154 triples and is linked to 3 other knowledge graphs by over 200,000 links. In our use case studies, we demonstrate the usefulness of our knowledge graph for different applications.
AU - Sherif, Mohamed
AU - Morim da Silva, Ana Alexandra
AU - Pestryakova, Svetlana
AU - Ahmed, Abdullah Fathi Ahmed
AU - Niemann, Sven
AU - Ngonga Ngomo, Axel-Cyrille
ID - 45558
TI - IngridKG: A FAIR Knowledge Graph of Graffiti
ER -
TY - JOUR
AB - Multiprotein adsorption from complex body fluids represents a highly important and complicated phenomenon in medicine. In this work, multiprotein adsorption from diluted human serum at gold and oxidized iron surfaces is investigated at different serum concentrations and pH values. Adsorption-induced changes in surface topography and the total amount of adsorbed proteins are quantified by atomic force microscopy (AFM) and polarization-modulation infrared reflection absorption spectroscopy (PM-IRRAS), respectively. For both surfaces, stronger protein adsorption is observed at pH 6 compared to pH 7 and pH 8. PM-IRRAS furthermore provides some qualitative insights into the pH-dependent alterations in the composition of the adsorbed multiprotein films. Changes in the amide II/amide I band area ratio and in particular side-chain IR absorption suggest that the increased adsorption at pH 6 is accompanied by a change in protein film composition. Presumably, this is mostly driven by the adsorption of human serum albumin, which at pH 6 adsorbs more readily and thereby replaces other proteins with lower surface affinities in the resulting multiprotein film.
AU - Huang, Jingyuan
AU - Qiu, Yunshu
AU - Lücke, Felix
AU - Su, Jiangling
AU - Grundmeier, Guido
AU - Keller, Adrian
ID - 46542
IS - 16
JF - Molecules
KW - Chemistry (miscellaneous)
KW - Analytical Chemistry
KW - Organic Chemistry
KW - Physical and Theoretical Chemistry
KW - Molecular Medicine
KW - Drug Discovery
KW - Pharmaceutical Science
SN - 1420-3049
TI - Multiprotein Adsorption from Human Serum at Gold and Oxidized Iron Surfaces Studied by Atomic Force Microscopy and Polarization-Modulation Infrared Reflection Absorption Spectroscopy
VL - 28
ER -
TY - JOUR
AB - The influence of nanoscale surface topography on protein adsorption is highly important for numerous applications in medicine and technology. Herein, ferritin adsorption at flat and nanofaceted, single-crystalline Al2O3 surfaces is investigated using atomic force microscopy and X-ray photoelectron spectroscopy. The nanofaceted surfaces are generated by the thermal annealing of Al2O3 wafers at temperatures above 1000 °C, which leads to the formation of faceted saw-tooth-like surface topographies with periodicities of about 160 nm and amplitudes of about 15 nm. Ferritin adsorption at these nanofaceted surfaces is notably suppressed compared to the flat surface at a concentration of 10 mg/mL, which is attributed to lower adsorption affinities of the newly formed facets. Consequently, adsorption is restricted mostly to the pattern grooves, where the proteins can maximize their contact area with the surface. However, this effect depends on the protein concentration, with an inverse trend being observed at 30 mg/mL. Furthermore, different ferritin adsorption behavior is observed at topographically similar nanofacet patterns fabricated at different annealing temperatures and attributed to different step and kink densities. These results demonstrate that while protein adsorption at solid surfaces can be notably affected by nanofacet patterns, fine-tuning protein adsorption in this way requires the precise control of facet properties.
AU - Pothineni, Bhanu K.
AU - Kollmann, Sabrina
AU - Li, Xinyang
AU - Grundmeier, Guido
AU - Erb, Denise J.
AU - Keller, Adrian
ID - 46543
IS - 16
JF - International Journal of Molecular Sciences
KW - Inorganic Chemistry
KW - Organic Chemistry
KW - Physical and Theoretical Chemistry
KW - Computer Science Applications
KW - Spectroscopy
KW - Molecular Biology
KW - General Medicine
KW - Catalysis
SN - 1422-0067
TI - Adsorption of Ferritin at Nanofaceted Al2O3 Surfaces
VL - 24
ER -
TY - CONF
AU - Kouagou, N’Dah Jean
AU - Heindorf, Stefan
AU - Demir, Caglar
AU - Ngomo, Axel-Cyrille Ngonga
ID - 46459
T2 - NeSy
TI - Neural Class Expression Synthesis (Extended Abstract)
VL - 3432
ER -
TY - CHAP
AB - Indonesian is classified as underrepresented in the Natural Language Processing (NLP) field, despite being the tenth most spoken language in the world with 198 million speakers. The paucity of datasets is recognized as the main reason for the slow advancements in NLP research for underrepresented languages. Significant attempts were made in 2020 to address this drawback for Indonesian. The Indonesian Natural Language Understanding (IndoNLU) benchmark was introduced alongside IndoBERT pre-trained language model. The second benchmark, Indonesian Language Evaluation Montage (IndoLEM), was presented in the same year. These benchmarks support several tasks, including Named Entity Recognition (NER). However, all NER datasets are in the public domain and do not contain domain-specific datasets. To alleviate this drawback, we introduce IndQNER, a manually annotated NER benchmark dataset in the religious domain that adheres to a meticulously designed annotation guideline. Since Indonesia has the world’s largest Muslim population, we build the dataset from the Indonesian translation of the Quran. The dataset includes 2475 named entities representing 18 different classes. To assess the annotation quality of IndQNER, we perform experiments with BiLSTM and CRF-based NER, as well as IndoBERT fine-tuning. The results reveal that the first model outperforms the second model achieving 0.98 F1 points. This outcome indicates that IndQNER may be an acceptable evaluation metric for Indonesian NER tasks in the aforementioned domain, widening the research’s domain range.
AU - Gusmita, Ria Hari
AU - Firmansyah, Asep Fajar
AU - Moussallem, Diego
AU - Ngonga Ngomo, Axel-Cyrille
ID - 46572
SN - 0302-9743
T2 - Natural Language Processing and Information Systems
TI - IndQNER: Named Entity Recognition Benchmark Dataset from the Indonesian Translation of the Quran
ER -
TY - JOUR
AB - AbstractExternal visualization (i.e., physically embodied visualization) is central to the teaching and learning of mathematics. As external visualization is an important part of mathematics at all levels of education, it is diverse, and research on external visualization has become a wide and complex field. The aim of this scoping review is to characterize external visualizations in recent mathematics education research in order to develop a common ground and guide future research. A qualitative content analysis of the full texts of 130 studies published between 2018 and 2022 applied a deductive-inductive coding procedure to assess four dimensions: visualization product or process, type of visualization, media, and purpose. The analysis revealed different types of external visualizations including visualizations with physical resemblance ranging from pictorial to abstract visualizations as well as three types of visualizations with structural resemblance: length, area, and relational visualizations. Future research should include measures of visualization products or processes to help explain the demands and affordances that different types of visualizations present to learners and teachers.
AU - Schoenherr, Johanna
AU - Schukajlow, Stanislaw
ID - 46569
JF - ZDM – Mathematics Education
KW - General Mathematics
KW - Education
SN - 1863-9690
TI - Characterizing external visualization in mathematics education research: a scoping review
ER -
TY - CHAP
AU - Vochatzer, Stefanie
ED - Bentz , Julia
ID - 46560
T2 - Creative Approaches to Climate and Peace Education. An Educationr’s Guide to Using Storytelling and Art
TI - My first contact with the Foodsharing Initiative
ER -
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 -