@techreport{66777, author = {{Otto, Franziska and Frehe-Halliwell, Petra and Kremer, H.-Hugo and Kundisch, Heike}}, title = {{{Handreichung: Zum starken Selbst im Übergang Schule–Beruf! : Materialien und Umsetzungsbeispiele aus dem Forschungs- und Entwicklungsprojekt "SeiP": Selbstinszenierungspraktiken als Zugang zu einer selbstbestimmten, multimodalen Kompetenzfeststellung für (aus-) bildungsbenachteiligte Jugendliche}}}, doi = {{https://doi.org/10.17619/UNIPB/1-2421}}, year = {{2025}}, } @article{66774, author = {{Kremer, H.-Hugo and Otto, Franziska}}, journal = {{BVkE-Info}}, number = {{Juni}}, pages = {{5--6}}, title = {{{Selbsterkundung und Selbstinszenierung: Potenziale entfalten. Übergänge gestalten }}}, volume = {{2}}, year = {{2025}}, } @article{66278, author = {{Biehler, Rolf and Kawakami, Takashi and Lampen, Erna and Weiland, Travis and Zapata-Cardona, Lucía}}, journal = {{European Mathematical Society Magazine}}, number = {{136}}, pages = {{49–52}}, title = {{{Statistics and data science education as a vehicle for empowering citizens–short summary of a survey}}}, doi = {{10.17619/UNIPB/1-2633}}, year = {{2025}}, } @inproceedings{58801, abstract = {{Iran employs one of the most prominent Internet censors in the world. An important part of Iran’s censorship apparatus is its analysis of unencrypted protocols such as HTTP and DNS. During routine evaluations of Iran’s HTTP and DNS censorship, we noticed several properties we believe to be unknown today. For instance, we found injections of correct static IPs for some domains such as google.com on the DNS level, unclear HTTP version parsing, and correlations between DNS and HTTP censorship. In this paper, we present our findings to the community and discuss possible takeaways for affected people and the censorship circumvention community. As some of our findings left us bewildered, we hope to ignite a discussion about Iran’s censorship behavior. We aim to use the discussion of our work to execute a thorough analysis and explanation of Iran’s censorship behavior in the future.}}, author = {{Lange, Felix and Niere, Niklas and von Niessen, Jonathan and Suermann, Dennis and Heitmann, Nico and Somorovsky, Juraj}}, booktitle = {{Proceedings on Privacy Enhancing Technologies}}, location = {{Virtual}}, title = {{{I(ra)nconsistencies: Novel Insights into Iran’s Censorship}}}, year = {{2025}}, } @inproceedings{60503, abstract = {{Censors have long censored Transport Layer Security (TLS) traffic by inspecting the domain name in the unencrypted Server Name Indication (SNI) extension. By encrypting the SNI extension, the Encrypted ClientHello (ECH) prevents censors from blocking TLS traffic to certain domains. Despite this promising outlook, ECH’s current capability to contest TLS censorship is unclear; for instance, Russia has started censoring ECH connections successfully. This paper clarifies ECH’s current role for TLS censorship. To this end, we evaluate servers’ support for ECH and its analysis and subsequent blocking by censors. We determine Cloudflare as the only major provider supporting ECH. Additionally, we affirm previously known ECH censorship in Russia and uncover indirect censorship of ECH through encrypted DNS censorship in China and Iran. Our findings suggest that ECH’s contribution to censorship circumvention is currently limited: we consider ECH’s dependence on encrypted DNS especially challenging for ECH’s capability to circumvent censorship. We stress the importance of censorship-resistant ECH to solve the long-known problem of SNI-based TLS censorship.}}, author = {{Niere, Niklas and Lange, Felix and Heitmann, Nico and Somorovsky, Juraj}}, keywords = {{censorship, circumvention, ECH, TLS}}, location = {{Washington, D.C.}}, title = {{{Encrypted Client Hello (ECH) in Censorship Circumvention}}}, year = {{2025}}, } @article{66685, abstract = {{Basado en una encuesta en línea efectuada a futuros docentes en Badajoz (España) y Posadas (Argentina), el presente artículo explora competencias multilingües y formas de educación intercultural más allá de las fronteras nacionales. Los datos cuantitativos obtenidos demuestran que, en ambas ciudades, la gran mayoría de los futuros docentes considera que los conocimientos sobre sistemas educativos de otros países, la inclusión de recursos didácticos bi- o multilingües y la inclusión de temas interculturales son importantes o muy importantes. Además, muchos de los futuros profesionales de la educación cuentan con capital intercultural que se podría aplicar en diferentes contextos nacionales y transnacionales de enseñanza y aprendizaje interculturales. Sin embargo, para poder aprovechar plenamente su potencial, es crucial crear contextos educativos más equitativos e incluyentes que traten de superar los desequilibrios sistemáticos en las oportunidades de realización del capital intercultural.}}, author = {{Pöllmann, Andreas}}, issn = {{2347-1085}}, journal = {{Revista La Rivada}}, keywords = {{educación intercultural, capital intercultural, encuesta comparativa, futuros docentes, multilingüismo, transnacionalidad}}, number = {{25}}, pages = {{22--41}}, publisher = {{Universidad Nacional de Misiones}}, title = {{{Dimensiones transnacionales y multilingües de la educación intercultural: Resultados de una encuesta a futuros docentes en Badajoz (España) y Posadas (Argentina)}}}, volume = {{13}}, year = {{2025}}, } @techreport{65863, abstract = {{We investigate the impact of Brexit on the corporate bond market by analyzing a comprehensive database covering corporate bond listings on European and UK trading venues. We find a significant shift in bond market activity, evidenced by a 49% increase in the number of bond listings in the EEA30 countries relative to the UK market after Brexit. Country-level analyses reveal a staggered effect on market activity, with predominantly international issuers adjusting their bond listings between the initially scheduled Brexit date and the final withdrawal date. At the issuer level, our findings indicate that the relative attractiveness of the EEA30 market has increased post-Brexit. Overall, these results suggest that the European capital market has successfully adapted to the loss of its largest financial center and exhibits a rising corporate bond market activity.}}, author = {{Franke, Benedikt and Kosi, Urska and Stoczek, Pia}}, publisher = {{TRR 266 Accounting for Transparency }}, title = {{{Brexit and European Corporate Bond Markets}}}, doi = {{10.2139/ssrn.5230141}}, year = {{2025}}, } @article{50301, author = {{Schryen, Guido}}, journal = {{Journal of Parallel and Distributed Computing}}, title = {{{Speedup and efficiency of computational parallelization: A unifying approach and asymptotic analysis}}}, year = {{2024}}, } @article{50101, author = {{Domenik Ackermann}}, journal = {{Quick And Easy Journal Title}}, title = {{{New Quick And Easy Publication - Will be edited by LibreCat team}}}, year = {{2024}}, } @article{50099, author = {{Domenik Ackermann}}, journal = {{Quick And Easy Journal Title}}, title = {{{New Quick And Easy Publication - Will be edited by LibreCat team}}}, year = {{2024}}, } @article{49772, author = {{Huybrechts, Yves and Karaca, Resul}}, issn = {{1866-5268}}, journal = {{Synergies Pays germanophones}}, pages = {{119--131}}, publisher = {{GERFLINT}}, title = {{{BelgienNet – une plateforme pour l’accès aux langues et cultures de la Belgique}}}, volume = {{16}}, year = {{2024}}, } @article{50841, author = {{Moretto, Giordano and Schnell, Nicolas and Frey, Jonathan and Karakaya, Yasin and Amstutz, Alois and Diehl, Moritz and Kasper, Tina and Onder, Christopher}}, journal = {{Control Engineering Practice}}, pages = {{105848}}, title = {{{Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control}}}, doi = {{10.1016/j.conengprac.2024.105848}}, volume = {{145}}, year = {{2024}}, } @article{51156, abstract = {{Ferroelectric domain wall (DW) conductivity (DWC) can be attributed to two separate mechanisms: (a) the injection/ejection of charge carriers across the Schottky barrier formed at the (metal-)electrode-DW junction and (b) the transport of those charge carriers along the DW. Current-voltage (I-U) characteristics, recorded at variable temperatures from LiNbO3 (LNO) DWs, are clearly able to differentiate between these two contributions. Practically, they allow us to directly quantify the physical parameters relevant to the two mechanisms (a) and (b) mentioned above. These are, for example, the resistance of the DW, the saturation current, the ideality factor, and the Schottky barrier height of the electrode-DW junction. Furthermore, the activation energies needed to initiate the thermally activated electronic transport along the DWs can be extracted. In addition, we show that electronic transport along LNO DWs can be elegantly viewed and interpreted in an adapted semiconductor picture based on a double-diode, double-resistor equivalent-circuit model, the R2D2 model. Finally, our R2D2 model was checked for its universality by successfully fitting the I-U curves of not only z-cut LNO bulk DWs, but equally of z-cut thin-film LNO DWs, and of x-cut thin-film DWs as reported in literature.}}, author = {{Zahn, Manuel and Beyreuther, Elke and Kiseleva, Iuliia and Lotfy, Ahmed Samir and McCluskey, Conor J. and Maguire, Jesi R. and Suna, Ahmet and Rüsing, Michael and Gregg, J. Marty and Eng, Lukas M.}}, issn = {{2331-7019}}, journal = {{Physical Review Applied}}, keywords = {{General Physics and Astronomy}}, number = {{2}}, publisher = {{American Physical Society (APS)}}, title = {{{Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium }}}, doi = {{10.1103/physrevapplied.21.024007}}, volume = {{21}}, year = {{2024}}, } @unpublished{51160, abstract = {{We rigorously derive novel and sharp finite-data error bounds for highly sample-efficient Extended Dynamic Mode Decomposition (EDMD) for both i.i.d. and ergodic sampling. In particular, we show all results in a very general setting removing most of the typically imposed assumptions such that, among others, discrete- and continuous-time stochastic processes as well as nonlinear partial differential equations are contained in the considered system class. Besides showing an exponential rate for i.i.d. sampling, we prove, to the best of our knowledge, the first superlinear convergence rates for ergodic sampling of deterministic systems. We verify sharpness of the derived error bounds by conducting numerical simulations for highly-complex applications from molecular dynamics and chaotic flame propagation.}}, author = {{Philipp, Friedrich M. and Schaller, Manuel and Boshoff, Septimus and Peitz, Sebastian and Nüske, Feliks and Worthmann, Karl}}, booktitle = {{arXiv:2402.02494}}, title = {{{Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency}}}, year = {{2024}}, } @misc{17740, author = {{Peckhaus, Volker}}, booktitle = {{The Stanford Encyclopedia of Philosophy, first published Sep 4, 2009, substantive revision Feb 2, 2024}}, editor = {{Zalta, Edward N.. and Nodelman, Uri}}, title = {{{Leibniz’s Influence on 19th Century Logic}}}, year = {{2024}}, } @article{51519, author = {{Cui, Tie Jun and Zhang, Shuang and Alu, Andrea and Wegener, Martin and Pendry, John and Luo, Jie and Lai, Yun and Wang, Zuojia and Lin, Xiao and Chen, Hongsheng and Chen, Ping and Wu, Rui-Xin and Yin, Yuhang and Zhao, Pengfei and Chen, Huanyang and Li, Yue and Zhou, Ziheng and Engheta, Nader and Asadchy, V. S. and Simovski, Constantin and Tretyakov, Sergei A and Yang, Biao and Campbell, Sawyer D. and Hao, Yang and Werner, Douglas H and Sun, Shulin and Zhou, Lei and Xu, Su and Sun, Hong-Bo and Zhou, Zhou and Li, Zile and Zheng, Guoxing and Chen, Xianzhong and Li, Tao and Zhu, Shi-Ning and Zhou, Junxiao and Zhao, Junxiang and Liu, Zhaowei and Zhang, Yuchao and Zhang, Qiming and Gu, Min and Xiao, Shumin and Liu, Yongmin and Zhang, Xiaoyu and Tang, Yutao and Li, Guixin and Zentgraf, Thomas and Koshelev, Kirill and Kivshar, Yuri S. and Li, Xin and Badloe, Trevon and Huang, Lingling and Rho, Junsuk and Wang, Shuming and Tsai, Din Ping and Bykov, A. Yu. and Krasavin, Alexey V and Zayats, Anatoly V and McDonnell, Cormac and Ellenbogen, Tal and Luo, Xiangang and Pu, Mingbo and Garcia-Vidal, Francisco J and Liu, Liangliang and Li, Zhuo and Tang, Wenxuan and Ma, Hui Feng and Zhang, Jingjing and Luo, Yu and Zhang, Xuanru and Zhang, Hao Chi and He, Pei Hang and Zhang, Le Peng and Wan, Xiang and Wu, Haotian and Liu, Shuo and Jiang, Wei Xiang and Zhang, Xin Ge and Qiu, Chengwei and Ma, Qian and Liu, Che and Li, Long and Han, Jiaqi and Li, Lianlin and Cotrufo, Michele and Caloz, Christophe and Deck-Léger, Z.-L. and Bahrami, A. and Céspedes, O. and Galiffi, Emanuele and Huidobro, P. A. and Cheng, Qiang and Dai, Jun Yan and Ke, Jun Cheng and Zhang, Lei and Galdi, Vincenzo and Di Renzo, Marco}}, issn = {{2515-7647}}, journal = {{Journal of Physics: Photonics}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}}, publisher = {{IOP Publishing}}, title = {{{Roadmap on electromagnetic metamaterials and metasurfaces}}}, doi = {{10.1088/2515-7647/ad1a3b}}, year = {{2024}}, } @article{46019, abstract = {{We derive efficient algorithms to compute weakly Pareto optimal solutions for smooth, convex and unconstrained multiobjective optimization problems in general Hilbert spaces. To this end, we define a novel inertial gradient-like dynamical system in the multiobjective setting, which trajectories converge weakly to Pareto optimal solutions. Discretization of this system yields an inertial multiobjective algorithm which generates sequences that converge weakly to Pareto optimal solutions. We employ Nesterov acceleration to define an algorithm with an improved convergence rate compared to the plain multiobjective steepest descent method (Algorithm 1). A further improvement in terms of efficiency is achieved by avoiding the solution of a quadratic subproblem to compute a common step direction for all objective functions, which is usually required in first-order methods. Using a different discretization of our inertial gradient-like dynamical system, we obtain an accelerated multiobjective gradient method that does not require the solution of a subproblem in each step (Algorithm 2). While this algorithm does not converge in general, it yields good results on test problems while being faster than standard steepest descent.}}, author = {{Sonntag, Konstantin and Peitz, Sebastian}}, journal = {{Journal of Optimization Theory and Applications}}, publisher = {{Springer}}, title = {{{Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems}}}, doi = {{10.1007/s10957-024-02389-3}}, year = {{2024}}, } @unpublished{51334, abstract = {{The efficient optimization method for locally Lipschitz continuous multiobjective optimization problems from [1] is extended from finite-dimensional problems to general Hilbert spaces. The method iteratively computes Pareto critical points, where in each iteration, an approximation of the subdifferential is computed in an efficient manner and then used to compute a common descent direction for all objective functions. To prove convergence, we present some new optimality results for nonsmooth multiobjective optimization problems in Hilbert spaces. Using these, we can show that every accumulation point of the sequence generated by our algorithm is Pareto critical under common assumptions. Computational efficiency for finding Pareto critical points is numerically demonstrated for multiobjective optimal control of an obstacle problem.}}, author = {{Sonntag, Konstantin and Gebken, Bennet and Müller, Georg and Peitz, Sebastian and Volkwein, Stefan}}, booktitle = {{arXiv:2402.06376}}, title = {{{A Descent Method for Nonsmooth Multiobjective Optimization in Hilbert Spaces}}}, year = {{2024}}, } @inbook{51790, author = {{Richter, Susanne}}, booktitle = {{Inklusiver Kinderschutz – Anforderungen, Herausforderungen, Perspektiven}}, editor = {{Kieslinger, Daniel and Owsianowski, Judith}}, isbn = {{978-3-7841-3666-0}}, publisher = {{Lambertus}}, title = {{{Herausforderungen in der inklusiven Mädchenarbeit: Begleitforschung der „Inklusiven anonymen Zuflucht“ des Mädchenhaus Bielefeld e.V.}}}, year = {{2024}}, } @article{40171, abstract = {{We present a convolutional framework which significantly reduces the complexity and thus, the computational effort for distributed reinforcement learning control of dynamical systems governed by partial differential equations (PDEs). Exploiting translational equivariances, the high-dimensional distributed control problem can be transformed into a multi-agent control problem with many identical, uncoupled agents. Furthermore, using the fact that information is transported with finite velocity in many cases, the dimension of the agents’ environment can be drastically reduced using a convolution operation over the state space of the PDE, by which we effectively tackle the curse of dimensionality otherwise present in deep reinforcement learning. In this setting, the complexity can be flexibly adjusted via the kernel width or by using a stride greater than one (meaning that we do not place an actuator at each sensor location). Moreover, scaling from smaller to larger domains – or the transfer between different domains – becomes a straightforward task requiring little effort. We demonstrate the performance of the proposed framework using several PDE examples with increasing complexity, where stabilization is achieved by training a low-dimensional deep deterministic policy gradient agent using minimal computing resources.}}, author = {{Peitz, Sebastian and Stenner, Jan and Chidananda, Vikas and Wallscheid, Oliver and Brunton, Steven L. and Taira, Kunihiko}}, journal = {{Physica D: Nonlinear Phenomena}}, pages = {{134096}}, publisher = {{Elsevier}}, title = {{{Distributed Control of Partial Differential Equations Using Convolutional Reinforcement Learning}}}, doi = {{10.1016/j.physd.2024.134096}}, volume = {{461}}, year = {{2024}}, }