@techreport{66548,
abstract = {{The Circular Economy is considered a key approach to addressing resource scarcity, rising raw material prices, and the need for more resilient value chains. However, its practical implementation is often hindered by the lack of suitable and standardized metrics, as well as by high requirements for horizontal and vertical data integration. This white paper illustrates, through selected Manufacturing-X projects, how federated data ecosystems can help establish Circular Economy metrics as an effective management instrument for growth, margin protection, and resilience.
Based on literature, industrial practice, and demonstrators, Circular Economy metrics are structured into four groups: overarching assessment approaches, disassembly-related indicators, lifetime-oriented metrics, and end-of-life and recycling-focused indicators. Use cases from Construct-X, Decide4ECO, Fluid 4.0, Chem-X, and other Manufacturing-X initiatives demonstrate the benefits of data-driven approaches for product, component, and material loops. At the same time, they reveal a current lack of interoperable, cross-industry standards for both metrics and data models.
The white paper concludes that data ecosystems such as Manufacturing-X are a key enabler for scaling circular business models. In particular, shared cross-sector frameworks for metrics, standardized information models based for example on the Asset Administration Shell, and the integration of circular metrics into existing systems and processes are essential. The work presented therefore marks an important step toward a data-driven and economically viable Circular Economy.}},
author = {{Pottebaum, Jens and Dietrich, Katrin and Schmidt, Lara and Biglari, Mostafa and Schmidt, Michael-Georg and Pistillo, Alessandro and Gravina, Nadja and Schmidt, Franziska}},
keywords = {{Circular Economy, Circular Economy Metrics, Manufacturing-X, Data Ecosystems}},
publisher = {{Manufacturing-X Guidance Board}},
title = {{{Understanding the Value of Data Ecosystems for Circular Economy Metrics}}},
doi = {{10.24406/PUBLICA-9382}},
year = {{2026}},
}
@article{66554,
author = {{Arsenyeva, Olga and Breuer, Niklas and Riepin, Yevhenii and Grünewald, Marcus and Riese, Julia}},
issn = {{2451-9049}},
journal = {{Thermal Science and Engineering Progress}},
publisher = {{Elsevier BV}},
title = {{{Method for estimation of plate heat exchanger design for a flexible methanol–water distillation column}}},
doi = {{10.1016/j.tsep.2026.104855}},
year = {{2026}},
}
@article{66555,
abstract = {{Scalable plasmonic technologies face a critical trade‐off: few‐body architectures offer high enhancement but are sensitive to fabrication flaws, while scalable methods like solid‐state dewetting yield large, low‐enhancement gaps. We introduce a paradigm shift using a many‐body plasmonic architecture inspired by statistical mechanics. By moving toward the continuum limit, local geometric variations are statistically averaged out, effectively decoupling optical performance from microscopic disorder. We implement this concept via a lithography‐ and etching‐free, multi‐step dewetting strategy, creating wafer‐scale nanoclusters. This process strategically forms a robust many‐body system by introducing numerous small satellite nanoparticles between larger particles. Crucially, this design achieves a high collective enhancement that surpasses even optimized few‐body systems, despite having larger individual gaps. Under optimized conditions, these substrates exhibit a surface‐enhanced Raman scattering enhancement factor approaching 4 × 10^8 with unprecedented reproducibility (RSD of ∼10%). This scalable, low‐cost concept establishes a practical route toward reproducible wafer‐scale nanophotonic platforms for sensing, spectroscopy, and quantum technologies.}},
author = {{Kim, Minjun and Devaraj, Vasanthan and Seo, Hyeon‐Seok and Eom, Seong‐Jae and Lee, Jeong‐Su and Lee, Donghan and Jeon, Min Yong and Zentgraf, Thomas and Lee, Jong‐Min}},
issn = {{1863-8880}},
journal = {{Laser & Photonics Reviews}},
publisher = {{Wiley}},
title = {{{Engineering Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement}}},
doi = {{10.1002/lpor.71610}},
year = {{2026}},
}
@inproceedings{66557,
author = {{Casamassima, Gianna and Funk, Michael and Knickenberg, Margarita and Löper, Marwin Felix and Hellmich, Frank and Grosche, M and Zimmer, L and Grüßing, M and Weß, N}},
publisher = {{Universität Bielefeld}},
title = {{{Sozial-emotionale Kompetenzen und kooperatives Lernen im diversitätssensiblen Mathematikunterricht. Posterpräsentation auf der 90. Sektionstagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF) in der DGfE. Thema: „Wissen|schaf[f]t|Ordnung? Zur Dynamik von Wissensordnungen in erziehungswissenschaftlicher Forschung, Gesellschaft und Pädagogik“. (angenommen)}}},
year = {{2026}},
}
@inproceedings{66556,
author = {{Funk, Michael and Hellmich, Frank}},
publisher = {{Universität Bielefeld}},
title = {{{ Lehrkräfteperspektiven auf die Förderung sozial-emotionalen Lernens in der Grundschule. Posterpräsentation auf der 90. Sektionstagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF) in der DGfE. Thema: „Wissen|schaf[f]t|Ordnung? Zur Dynamik von Wissensordnungen in erziehungswissenschaftlicher Forschung, Gesellschaft und Pädagogik“. (angenommen)}}},
year = {{2026}},
}
@inbook{66563,
abstract = {{Im ComeMINT-Netzwerk wurde für das Fach Physik ein zweiphasiges Fortbildungskonzept zum Einsatz digitaler Medien im Physikunterricht entwickelt. Die erste Phase besteht aus einem Online-Selbstlernkurs auf der Plattform iMooX, welcher neben einer Einführung in das Lernen mit digitalen Medien auch Module zu spezifischen Medien wie z. B. Erklärvideos, digitale Messwerterfassung, Smartphones im Physikunterricht oder Mikrocontroller umfasst.
Darauf aufbauend werden vertiefende Präsenzfortbildungen zu einzelnen Medien an den beteiligten Standorten angeboten, die einen stärkeren Praxisbezug verfolgen. Der Beitrag stellt neben den Konzepten des Online-Selbstlernkurses und den Präsenzfortbildungen auch die bisherigen Erfahrungen aus der Implementation der Fortbildung in die Praxis vor.}},
author = {{Plicht, Katja and Burde, Jan-Philipp and Costan, Kasim and Gieshoff, Rike Isabel and Kulgemeyer, Christoph and Lässer, Armin and Riese, Josef and Schubatzky, Thomas and Weiler, David Christoph}},
booktitle = {{Professionelles Handeln in einer Kultur der Digitalität: Ergebnisse aus dem Kompetenzzentrum MINT}},
editor = {{Scheiter, Katharina and Richter, Dirk and Pittich, Daniel and Halbrock, Lara}},
isbn = {{9783818801502}},
keywords = {{Digitale Medien, Online-Kurs, Präsenzfortbildung, Physikunterricht}},
pages = {{155--168}},
publisher = {{Waxmann Verlag GmbH}},
title = {{{Vom Online-Kurs zur Präsenzfortbildung}}},
doi = {{10.31244/9783818851507}},
volume = {{1}},
year = {{2026}},
}
@inproceedings{66561,
author = {{Menne, Anna Lena}},
booktitle = {{6th International Conference on Anticipation: Book of Abstracts}},
location = {{Milan}},
pages = {{551--553}},
publisher = {{Department of Design, Politecnico di Milano}},
title = {{{Staying with the Cracks: From Quick Fixes to Transformative Explainable AI}}},
volume = {{6}},
year = {{2026}},
}
@misc{66566,
author = {{Rogowska, Gabriela and Domenici, Diego Dylan and Yilmaz, Fatih and Ceselli, Luca and Coenen, Laurien and Fuchs, Christian and Klinge, Xenia and Ruiz de Assin de los Santos, Maria}},
publisher = {{LibreCat University}},
title = {{{Holding Democracy Together: A common European baseline for trustworthy digital democracy in Europe (Policy Brief)}}},
doi = {{10.5281/ZENODO.21026680}},
year = {{2026}},
}
@article{66583,
abstract = {{We introduce a method for determining the sensitivity of any given entangled two-photon absorption (ETPA) measurement. By modeling all signal and noise contributions to the measurement, we derive a single numerical value that describes the sensitivity of the ETPA measurement in Göppert-Mayer units. This allows us to directly compare vastly different experimental approaches and determine whether ETPA will be detectable under the given conditions. Therefore we can quantify the effect of any change to a given experimental apparatus and identify the ideal optimization pathway.}},
author = {{Pollmann, René and Roeder, Franz and Silberhorn, Christine and Brecht, Benjamin}},
issn = {{2469-9926}},
journal = {{Physical Review A}},
number = {{1}},
publisher = {{American Physical Society (APS)}},
title = {{{Limitations of entangled two-photon absorption detection}}},
doi = {{10.1103/qpb1-hk5l}},
volume = {{114}},
year = {{2026}},
}
@inproceedings{66603,
author = {{Dou, Jinfeng and Götte, Thorsten and Hillebrandt, Henning and Scheideler, Christian and Werthmann, Julian}},
booktitle = {{Lecture Notes in Computer Science}},
isbn = {{9783032264640}},
issn = {{0302-9743}},
publisher = {{Springer Nature Switzerland}},
title = {{{Fast Distributed Computation of Compact Routing Schemes}}},
doi = {{10.1007/978-3-032-26465-7_19}},
year = {{2026}},
}
@inproceedings{66602,
author = {{Augustine, John and Hillebrandt, Henning and Kumar, Manish and Scheideler, Christian and Werthmann, Julian}},
booktitle = {{Proceedings of the ACM Symposium on Principles of Distributed Computing}},
publisher = {{ACM}},
title = {{{Supervised Distributed Computing: Efficiency and Robustness under a Majority of Adversarial Workers}}},
doi = {{10.1145/3796701.3815939}},
year = {{2026}},
}
@inproceedings{66604,
author = {{Friesen, Olga and Hölscher, Jonas and Spieker, Carsten and Förstner, Jens and Claes, Leander}},
location = {{München}},
title = {{{Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components}}},
year = {{2026}},
}
@inbook{36895,
author = {{Webersen, Yvonne and Riese, Josef}},
booktitle = {{Demokratiebildung in der Lehrkräftebildung (Arbeitstitel). Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung.}},
editor = {{Becher, Andrea and Bloh, Bea and Herzig, Bardo and Pollmeier, Pascal}},
publisher = {{Waxmann}},
title = {{{Wie funktionieren (Pseudo)wissenschaften? Ein Seminarkonzept für angehende Lehrkräfte naturwissenschaftlicher Fächer}}},
volume = {{3}},
year = {{2026}},
}
@article{66589,
abstract = {{Dieser Beitrag schließt an die anderen Artikel dieses Themenheftes an. Dabei werden mögliche Strukturen empirischer Forschung zu interreligiösen Lehr-Lernprozessen auf der Hochschulebene vorgeschlagen. Mögliche Zieloptionen, Ebenen und Fallstricke für die empirische Forschung zu interreligiösen Lehr-Lernprozessen werden diskutiert. Des Weiteren werden Erkenntnisse bisheriger Forschungsbemühungen zu interreligiösen Lehr-Lernprozessen zusammengefasst und ein strukturierter Ausblick auf Optionen empirischer Forschungen im universitären Bereich gegeben, wobei die vorangehenden Aufsätze dieses Themenheftes hinzugezogen werden.}},
author = {{Meyer, Karlo and Caruso, Carina}},
journal = {{Theo-Web}},
keywords = {{Interreligiöses Lernen, Lehr-Lernprozesse, Religionspädagogik, Hochschuldidaktik, empirische Forschung}},
number = {{1}},
pages = {{251 -- 266}},
title = {{{Potenziale und Limitationen empirischer Forschung zu interreligiösen Lehr- und Lernprozessen in Schule und Hochschule}}},
doi = {{https://doi.org/10.58069/theow.2026.1.124}},
year = {{2026}},
}
@article{66640,
abstract = {{
We develop a framework for identifying nonclassical speedups in systems with polarization, likewise spin degrees of freedom. By confining the dynamics to the manifold of angular momentum coherent states, which act as the classical reference in this case, we compute the speed limit that bounds the rate of change of the state achievable without generating quantum coherence. A comparison with the unrestricted quantum speed limit enables the quantitative identification of speedups arising from polarization nonclassicality. We apply this framework to the cross-Kerr interaction, demonstrating a persistent speedup scaling as
O
(
N
)
with the photon number
N
, with a parity effect in favor of even photon numbers. The results establish polarization nonclassicality as a genuine dynamical resource, linking quantum coherence to quantum-enhanced evolution speeds in nonlinear photonic systems.
}},
author = {{Aßbrock, Tim and Sperling, Jan and Ares, Laura}},
issn = {{2643-1564}},
journal = {{Physical Review Research}},
number = {{3}},
publisher = {{American Physical Society (APS)}},
title = {{{Quantum speedup from nonclassical polarization}}},
doi = {{10.1103/mflc-2mzq}},
volume = {{8}},
year = {{2026}},
}
@article{66639,
author = {{Scheiter, Katharina and Bach, Katharina M. and Bauer, Elisabeth and Brod, Garvin and Bromme, Rainer and Buhl, Heike M. and Gagl, Benjamin and Greiff, Samuel and Hefter, Markus H. and Janke, Stefan and Lindner, Marlit A. and Mayweg, Elisabeth and Nebel, Steve and Rummel, Nikol and Sailer, Michael}},
journal = {{Psychologische Rundschau}},
number = {{3}},
pages = {{169--174}},
title = {{{Generative Künstliche Intelligenz im Kontext von Lehren, Lernen und Beraten: Eine Perspektive der Pädagogischen Psychologie}}},
doi = {{10.1026/0033-3042/a000769}},
volume = {{77}},
year = {{2026}},
}
@unpublished{66642,
abstract = {{In this work, we build a bridge between the Pólya--Schur program and Voiculescu's free probability theory. A cornerstone of the former is the Pólya--Benz Theorem, classifying a central family of real-root preserving operators on the space of polynomials, as those given by $f(\partial_z)$ for a Laguerre--Pólya function $f$ and the derivative operator $\partial_{z}$. We prove that any free (additive) infinitely divisible distribution can be attained as the weak limit of root distributions of Appell polynomials $f_n(\partial_z)z^n$ as $n\to\infty$, for a suitably chosen sequence $f_n$ of Laguerre--Pólya functions.
Such questions on the (global) limiting distributions of real rooted polynomials belong to the active research area of finite free probability. In contrast to its standard tools, our approach allows for non-compactly supported limiting distributions, (barely) complex rooted polynomials and even provides the full microscopic description of the roots. Moreover, we extend our results to differential operators generating free multiplicative infinitely divisible distributions, to the rectangular free convolution, and to $f_n(\partial_z)p_n$ for real rooted polynomials $p_n$, implying a generalization of the recent connections between the heat flow and free Brownian motion to any free Lévy process.
As corollaries, we identify free stable distributions by choosing $f_n$ to be a fixed rescaled Laguerre--Pólya function, and we prove various convergence results on the zero distributions of Jensen polynomials, e.g. the limiting root distribution of Jensen polynomial of the Riemann $Ξ$-function is given by the Cauchy distribution.}},
author = {{Campbell, Andrew and Jalowy, Jonas}},
booktitle = {{arXiv:2605.31356}},
title = {{{Pólya--Schur problems and free probability}}},
year = {{2026}},
}
@article{66641,
author = {{Jalowy, Jonas and Stange, Hanna}},
issn = {{0304-4149}},
journal = {{Stochastic Processes and their Applications}},
publisher = {{Elsevier BV}},
title = {{{Box-covariances of hyperuniform point processes}}},
doi = {{10.1016/j.spa.2026.104996}},
volume = {{199}},
year = {{2026}},
}
@article{66674,
abstract = {{Efficient detection of near-infrared light at telecommunication wavelengths remains a central challenge for GaAs-based photonic and optoelectronic devices due to the absence of linear absorption below the bandgap. Here, we demonstrate a hybrid nonlinear optoelectronic device that enhances the detection efficiency of a (001)-oriented GaAs PIN photodiode under telecommunication-wavelength illumination, where absorption is intrinsically limited to two-photon absorption (2PA). Our approach relies on the integration of a transferred, nanopatterned 385 nm-thick (111)-oriented GaAs nanofilm acting as an on-chip nonlinear frequency-conversion layer. Elliptical GaAs nanoresonators are employed to enhance second-harmonic generation (SHG) resonantly, converting incident 1550 nm radiation into above-bandgap photons efficiently absorbed by the underlying diode. Spatially resolved current–voltage measurements reveal a pronounced enhancement of the detector response in regions covered by the nanoantennas. The device exhibits a low dark current, while the metasurface-covered regions show the largest current response under 1560 nm excitation compared to the bare GaAs(100) diode and the unstructured GaAs(111) film. These results establish a direct functional link between dielectric metasurface–based nonlinear frequency conversion and electrical photodetection, providing a viable route toward integrated sub-bandgap detection schemes.}},
author = {{Spedt, Vladimir and Meier, Falco and Geromel, René and Mahler, Pascal and Henksmeier, Tobias and Reuter, Dirk and Zentgraf, Thomas and Meier, Cedrik}},
issn = {{1094-4087}},
journal = {{Optics Express}},
number = {{16}},
publisher = {{Optica Publishing Group}},
title = {{{Hybrid GaAs (111)/GaAs (100) PIN photodiodes for metasurface-assisted nonlinear upconversion detection}}},
doi = {{10.1364/oe.601288}},
volume = {{34}},
year = {{2026}},
}
@article{66457,
abstract = {{Abstract
The service life of fatigue-loaded components that already contain manufacturing‑induced microcracks is primarily governed by the direction and the rate of fatigue-crack growth. When multiple loading components (e.g., tension, compression, shear) act simultaneously but not in temporal synchrony, out‑of‑phase mixed‑mode conditions occur. Such loadings are typical for automotive chassis parts and mechanically joined sheet‑metal assemblies. For optimized design of structural components, the crack kinking angle that occurs under mixed‑mode loading must be predicted as accurately as possible. At present, however, this is still challenging for out‑of‑phase loading conditions. To investigate the associated crack kinking behavior, a novel Compact‑Tension‑Shear‑Mini (CTSM) specimen was developed, enabling controlled generation of plane out-of-phase mixed-mode loading states. Experiments were performed under various combinations of cyclic and static mode I and mode II load components and compared with the analytical predictions of the Out-of-Phase Mixed-Mode (OMM) concept. The measured crack kinking angles showed very good agreement with the predicted values, with mean deviations of only a few degrees, demonstrating the validity and reproducibility of the approach. These findings confirm the applicability of the OMM concept for describing fatigue‑crack propagation under non‑proportional mixed‑mode loading and provide a basis for fatigue‑life assessment of clinched joints and other cyclic multi-axially loaded components.}},
author = {{Krome, Sven and Kullmer, Gunter and Weiß, Deborah and Duffe, Tobias and Ostwald, Richard}},
issn = {{2731-6564}},
journal = {{Discover Mechanical Engineering}},
number = {{1}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry}}},
doi = {{10.1007/s44245-026-00236-5}},
volume = {{5}},
year = {{2026}},
}