@article{50012, abstract = {{Silicon photonics, in conjunction with complementary metal-oxide-semiconductor (CMOS) fabrication, has greatly enhanced the development of integrated optical phased arrays. This facilitates a dynamic control of light in a compact form factor that enables the synthesis of arbitrary complex wavefronts in the infrared spectrum. We numerically demonstrate a large-scale two-dimensional silicon-based optical phased array (OPA) composed of nanoantennas with circular gratings that are balanced in power and aligned in phase, required for producing elegant radiation patterns in the far-field. For a wavelength of 1.55 μm, we optimize two antennas for the OPA exhibiting an upward radiation efficiency as high as 90%, with almost 6.8% of optical power concentrated in the field of view. Additionally, we believe that the proposed OPAs can be easily fabricated and would have the ability to generate complex holographic images, rendering them an attractive candidate for a wide range of applications like LiDAR sensors, optical trapping, optogenetic stimulation, and augmented-reality displays.}}, author = {{Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}}, issn = {{1569-4410}}, journal = {{Photonics and Nanostructures - Fundamentals and Applications}}, keywords = {{tet_topic_opticalantenna}}, pages = {{101207}}, publisher = {{Elsevier BV}}, title = {{{Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays}}}, doi = {{10.1016/j.photonics.2023.101207}}, volume = {{58}}, year = {{2023}}, } @article{43245, abstract = {{High-contrast slab waveguide Bragg gratings with 1D periodicity are investigated. For specific oblique excitation by semi-guided waves at sufficiently high angles of incidence, the idealized structures do not exhibit any radiative losses, such that reflectance and transmittance for the single port mode add strictly up to one. We consider a series of symmetric, fully and partly etched finite gratings, for parameters found in integrated silicon photonics. These can act as spectral filters with a reasonably flattop response. Apodization can lead to more box shaped reflectance and transmittance spectra. Together with a narrowband Fabry–Perot filter, these configurations are characterized by reflection bands, or transmittance peaks, with widths that span three orders of magnitude.}}, author = {{Hammer, Manfred and Farheen, Henna and Förstner, Jens}}, issn = {{0740-3224}}, journal = {{Journal of the Optical Society of America B}}, keywords = {{tet_topic_waveguide}}, number = {{4}}, pages = {{862}}, publisher = {{Optica Publishing Group}}, title = {{{How to suppress radiative losses in high-contrast integrated Bragg gratings}}}, doi = {{10.1364/josab.485725}}, volume = {{40}}, year = {{2023}}, } @article{53672, author = {{Stenzel, Nadja}}, journal = {{Rezension zu T. Fohr: Integrierte Sprachbildung im Fach Kunst. Eine Studie zur Sekundarstufe I, Klasse 5.}}, publisher = {{Zeitschrift für Interkulturellen Fremdsprachenunterricht (ZIF) 2, 2023}}, title = {{{Rezension zu T. Fohr: Integrierte Sprachbildung im Fach Kunst. Eine Studie zur Sekundarstufe I, Klasse 5.}}}, volume = {{28}}, year = {{2023}}, } @inproceedings{43052, abstract = {{We demonstrate a large-scale two dimensional silicon-based optical phased array (OPA) composed of nanoantennas with circular gratings that are balanced in power and aligned in phase, required for producing desired radiation patterns in the far-field. The OPAs are numerically optimized to have an upward efficiency of up to 90%, targeting radiation concentration mainly in the field of view. We envision that our OPAs have the ability of generating complex holographic images, rendering them an attractive candidate for a wide range of applications like LiDAR sensors, optical trapping, optogenetic stimulation and augmented-reality displays.}}, author = {{Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}}, booktitle = {{Integrated Optics: Devices, Materials, and Technologies XXVII}}, editor = {{García-Blanco, Sonia M. and Cheben, Pavel}}, keywords = {{tet_topic_opticalantenna}}, pages = {{124241D }}, publisher = {{SPIE}}, title = {{{Optimized silicon antennas for optical phased arrays}}}, doi = {{10.1117/12.2658716}}, year = {{2023}}, } @inproceedings{50466, abstract = {{A key challenge in designing efficient optical phased arrays is the lack of a well-designed radiator. This work explores horn antennas numerically optimized to target high upward radiation efficiency to be employed in silicon-based phased arrays capable of producing elegant radiation patterns in the far-field.}}, author = {{Farheen, Henna and Joshi, S. and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner, Jens}}, booktitle = {{2023 IEEE Photonics Conference (IPC)}}, keywords = {{tet_topic_opticalantenna}}, publisher = {{IEEE}}, title = {{{Increasing the upward radiation efficiency of optical phased arrays using asymmetric silicon horn antennas}}}, doi = {{10.1109/ipc57732.2023.10360519}}, year = {{2023}}, } @article{55331, author = {{Bünning, Jenny and Kortendiek, Beate and Radermacher, Clara and Schmidt, Uta C.}}, journal = {{Journal Netzwerk Frauen- und Geschlechterforschung NRW}}, number = {{53}}, publisher = {{LibreCat University}}, title = {{{Journal Netzwerk Frauen- und Geschlechterforschung}}}, doi = {{10.17185/DUEPUBLICO/81359}}, volume = {{2023}}, year = {{2023}}, } @article{55340, author = {{van der Valk, Stefanie}}, journal = {{Der fremdsprachliche Unterricht Spanisch}}, number = {{81}}, pages = {{8--15}}, title = {{{¿Qué es la instapoesía? Literarästhetisches Lernen mit Gedichten auf Instagram}}}, year = {{2023}}, } @inbook{55351, author = {{Grössl, Johannes}}, booktitle = {{Open and Relational Theology and Its Social and Political Implications. Muslim and Christian Perspectives}}, editor = {{Foster, Jonathan J. and Korchide, Mouhanad and Oord, Thomas J. and Schmid, Manuel}}, isbn = {{195867012X}}, pages = {{85--90}}, publisher = {{SacraSage Press}}, title = {{{Interreligious Open Theology and Human Exceptionalism: In Conversation with Catherine Keller}}}, year = {{2023}}, } @book{55350, editor = {{Grebe, Matthias and Grössl, Johannes}}, isbn = {{9780567682451}}, publisher = {{Bloomsbury}}, title = {{{T&T Clark Handbook of Suffering and the Problem of Evil}}}, year = {{2023}}, } @inproceedings{50594, abstract = {{September 2023}}, author = {{Büker, Petra and Höke, Julia and Herding, Jana}}, title = {{{Paderborner Qualitätsstern (PQ³): A self-evaluation instrument for ECEC and school educators to reflect collaboration in transition processes. Current findings. Presentation for self-organised symposium on the EECERA Conference "Children´s Curiosity, Agency and Participation: challenges for professional Action and Development" in Lisbon (Portugal)}}}, year = {{2023}}, } @article{48596, author = {{Häsel-Weide, Uta and Schmidt, R. and Büker, Petra}}, journal = {{Zeitschrift für Schul- und Professionsentwicklung (PFLB)}}, number = {{1}}, pages = {{215--229}}, title = {{{„FInDig“: Fach – Inklusion – Digitalisierung vernetzen. Ein Planungs- und Reflexionsmodell für die Lehrkräftebildung}}}, volume = {{5}}, year = {{2023}}, } @inproceedings{51630, author = {{Büker, Petra and Häsel-Weide, Uta and Schmidt, Rebekka}}, booktitle = {{Tagung „Digitalisierungsbezogene Lehrer*innenbildung an der Universität Paderborn}}, title = {{{FInDig: Fach – Inklusion – Digitalisierung vernetzen. Ein Planungs- und Reflexionsmodell für die Lehrkräftebildung}}}, year = {{2023}}, } @inbook{55355, author = {{Grössl, Johannes}}, booktitle = {{Vorsehung und Handeln Gottes. Analytische und kontinentale Perspektiven im Dialog (QD 331)}}, editor = {{Kopf, Simon Maria and Essen, Georg}}, isbn = {{978-3-451-02331-6}}, pages = {{149--166}}, publisher = {{Herder}}, title = {{{Schöpfungsrisiko oder Erlösungsgarantie? Theologische Herausforderungen analytischer Vorsehungskonzeptionen }}}, volume = {{331}}, year = {{2023}}, } @inbook{55354, author = {{Grössl, Johannes}}, booktitle = {{God’s Own Mouthpieces: Reason and Prophecy in Judaism, Christianity and Islam}}, editor = {{Schulz, Heiko}}, isbn = {{978-3-16-162830-6 }}, pages = {{261--271}}, publisher = {{Mohr Siebeck}}, title = {{{Can God Know the Future – and Share his Knowledge with Human Beings? An Open and Relational Account of Prophecy}}}, doi = {{ 10.1628/978-3-16-162830-6 }}, year = {{2023}}, } @article{55277, author = {{Klahn, B. and Technau, Marc}}, journal = {{Int. J. Number Theory}}, number = {{10}}, pages = {{2443–2450}}, title = {{{Galois groups of (ⁿ₀)+(ⁿ₁)X+…+(ⁿ₆)X⁶}}}, doi = {{10.1142/S1793042123501208}}, volume = {{19}}, year = {{2023}}, } @article{55279, author = {{Minelli, P. and Sourmelidis, A. and Technau, Marc}}, journal = {{Math. Ann.}}, pages = {{291–320}}, title = {{{Bias in the number of steps in the Euclidean algorithm and a conjecture of Ito on Dedekind sums}}}, doi = {{10.1007/s00208-022-02452-2}}, volume = {{387}}, year = {{2023}}, } @unpublished{55396, abstract = {{Explainability has become an important topic in computer science and artificial intelligence, leading to a subfield called Explainable Artificial Intelligence (XAI). The goal of providing or seeking explanations is to achieve (better) 'understanding' on the part of the explainee. However, what it means to 'understand' is still not clearly defined, and the concept itself is rarely the subject of scientific investigation. This conceptual article aims to present a model of forms of understanding in the context of XAI and beyond. From an interdisciplinary perspective bringing together computer science, linguistics, sociology, and psychology, a definition of understanding and its forms, assessment, and dynamics during the process of giving everyday explanations are explored. Two types of understanding are considered as possible outcomes of explanations, namely enabledness, 'knowing how' to do or decide something, and comprehension, 'knowing that' -- both in different degrees (from shallow to deep). Explanations regularly start with shallow understanding in a specific domain and can lead to deep comprehension and enabledness of the explanandum, which we see as a prerequisite for human users to gain agency. In this process, the increase of comprehension and enabledness are highly interdependent. Against the background of this systematization, special challenges of understanding in XAI are discussed.}}, author = {{Buschmeier, Hendrik and Buhl, Heike M. and Kern, Friederike and Grimminger, Angela and Beierling, Helen and Fisher, Josephine and Groß, André and Horwath, Ilona and Klowait, Nils and Lazarov, Stefan and Lenke, Michael and Lohmer, Vivien and Rohlfing, Katharina and Scharlau, Ingrid and Singh, Amit and Terfloth, Lutz and Vollmer, Anna-Lisa and Wang, Yu and Wilmes, Annedore and Wrede, Britta}}, booktitle = {{arXiv:2311.08760}}, title = {{{Forms of Understanding of XAI-Explanations}}}, year = {{2023}}, } @inproceedings{55406, abstract = {{Metaphorical language, such as {“}spending time together{”}, projects meaning from a source domain (here, $money$) to a target domain ($time$). Thereby, it highlights certain aspects of the target domain, such as the $effort$ behind the time investment. Highlighting aspects with metaphors (while hiding others) bridges the two domains and is the core of metaphorical meaning construction. For metaphor interpretation, linguistic theories stress that identifying the highlighted aspects is important for a better understanding of metaphors. However, metaphor research in NLP has not yet dealt with the phenomenon of highlighting. In this paper, we introduce the task of identifying the main aspect highlighted in a metaphorical sentence. Given the inherent interaction of source domains and highlighted aspects, we propose two multitask approaches - a joint learning approach and a continual learning approach - based on a finetuned contrastive learning model to jointly predict highlighted aspects and source domains. We further investigate whether (predicted) information about a source domain leads to better performance in predicting the highlighted aspects, and vice versa. Our experiments on an existing corpus suggest that, with the corresponding information, the performance to predict the other improves in terms of model accuracy in predicting highlighted aspects and source domains notably compared to the single-task baselines.}}, author = {{Sengupta, Meghdut and Alshomary, Milad and Scharlau, Ingrid and Wachsmuth, Henning}}, booktitle = {{Findings of the Association for Computational Linguistics: EMNLP 2023}}, editor = {{Bouamor, Houda and Pino, Juan and Bali, Kalika}}, pages = {{4636–4659}}, publisher = {{Association for Computational Linguistics}}, title = {{{Modeling Highlighting of Metaphors in Multitask Contrastive Learning Paradigms}}}, doi = {{10.18653/v1/2023.findings-emnlp.308}}, year = {{2023}}, } @article{45604, author = {{Steinhardt, Isabel and Mauermeister, Sylvi and Schmidt, Rebecca}}, issn = {{0023-8333}}, journal = {{Language Learning}}, keywords = {{Open Science, Open Science Practices, Cultural Change}}, publisher = {{Wiley}}, title = {{{Open Research Practices and Cultural Change: A Commentary on “(Why) Are Open Research Practices the Future for the Study of Language Learning?”}}}, doi = {{10.1111/lang.12583}}, year = {{2023}}, } @unpublished{45402, abstract = {{

The reproduction of social inequalities through artificial intelligence (AI) and machine learning via artificial neural networks (ANN) has been demonstrated empirically in various areas of society, for instance in policing and personnel hiring decisions. Yet, a broader discussion is missing to what extent ANN technological developments may affect the scientific enterprise and reinforce or mitigate existing structural inequalities in academia. Focusing on publications and citations as main currencies in science, the anticipated consequences of ChatGPT on the research communication of existing and new knowledges are discussed in three scenarios, which echo the social structures in academia.

}}, author = {{Wieczorek, Oliver and Steinhardt, Isabel and Schneijderberg, Christian and Schmidt, Rebecca and Mauermeister, Sylvi}}, publisher = {{Center for Open Science}}, title = {{{The Bot Delusion. ChatGPT and anticipated consequences for research communication}}}, year = {{2023}}, }