@inproceedings{63399, abstract = {{Data centers (DCs) form the backbone of our growing digital economy, but their rising energy demands pose challenges to our environment. At the same time, reusing waste heat from DCs also represents an opportunity, for example, for more sustainable heating of residential buildings. Modeling and optimizing these coupled and dynamic systems of heat generation and reuse is complex. On the one hand, physical simulations can be used to model these systems, but they are time-consuming to develop and run. Machine learning (ML), on the other hand, allows efficient data-driven modeling, but conventional correlation-based approaches struggle with the prediction of interventions and out-of-distribution generalization. Recent advances in causal ML, which combine principles from causal inference with flexible ML methods, are a promising approach for more robust predictions. Due to their focus on modeling interventions and cause-and-effect relationships, it is difficult to evaluate causal ML approaches rigorously. To address this challenge, we built a testbed of a miniature DC with an integrated waste heat network, equipped with sensors and actuators. This testbed allows conducting controlled experiments and automatic collection of realistic data, which can then be used to benchmark conventional and causal ML methods. Our experimental results highlight the strengths and weaknesses of each modeling approach, providing valuable insights on how to appropriately apply different types of machine learning to optimize data center operations and enhance their sustainability.}}, author = {{Gonzalez, David Zapata and Meyer, Marcel and Müller, Oliver}}, booktitle = {{ACM SIGEnergy Energy Informatics Review}}, issn = {{2770-5331}}, number = {{2}}, pages = {{4--10}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Causal Machine Learning Approaches for Modelling Data Center Heat Recovery: A Physical Testbed Study}}}, doi = {{10.1145/3757892.3757893}}, volume = {{5}}, year = {{2025}}, } @article{63405, author = {{Eremin, Oxana and Richter, Susanne and Letzner, Celina}}, journal = {{blog interdisziplinäre geschlechterforschung}}, publisher = {{www.gender-blog.de/beitrag/zeit-fuer-gender-podcasts/ }}, title = {{{„Zeit für Gender“ – Podcasts aus der Fachcommunity 2}}}, doi = {{DOI: https://doi.org/10.17185/gender/20251217}}, year = {{2025}}, } @article{63410, abstract = {{ Lateral ankle sprain (LAS) is the most common traumatic injury, with a high recurrence rate and chronic ankle instability (CAI) developing in ∼40% of cases. LAS leads to patho-mechanical, sensory-perceptual and motor-behavioral deficits. Poor management of the return-to-sport (RTS) is now considered a major cause of re-injury and development of CAI, particularly due to the lack of validated tests and the failure of existing ones to account for those central deficits. The first part of this topic aimed to clarify concepts of cognitive constructs and sensory reweighting and their association with CAI. We also aimed to identify objective RTS criteria and discuss their limits regarding their ability to encompass central impairments. Motor-cognitive deficits have been identified using computerized cognitive tasks and dual-task paradigms. More specifically, deficits in visual memory, processing speed or inhibitory control and attentional resource allocation have demonstrated reduced performance in CAI populations. In addition, altered sensory reweighting process towards visual input has also been observed. While objective criteria are crucial to prevent re-injury, current evaluations remain largely subjective and central impairments are unaccounted for in conventional RTS testing. The Ankle-GO TM score was recently developed to guide clinicians in decision making process. To date, it is the first validated score that could help to identify patients who will RTS at the same level, those at risk of recurrence and those who are more likely to become copers. Unfortunately, it does not target cognitive or sensory reweighting alterations, that are both relevant in sport to manage gameplay demands. }}, author = {{Picot, Brice and Maricot, Alexandre and Fourchet, François and Gokeler, Alli and Tassignon, Bruno and Lopes, Ronny and Hardy, Alexandre}}, issn = {{2624-9367}}, journal = {{Frontiers in Sports and Active Living}}, publisher = {{Frontiers Media SA}}, title = {{{Targeting visual-sensory and cognitive impairments following lateral ankle sprains: a practical framework for functional assessment across the return-to-sport continuum—Part 1. Sensory reweighting and cognitive impairments: what are we really talking about and why clinicians should consider central alterations in return to sport criteria}}}, doi = {{10.3389/fspor.2025.1668224}}, volume = {{7}}, year = {{2025}}, } @unpublished{63403, abstract = {{Stateful signatures like the NIST standardized signature schemes LMS and XMSS provide an efficient and mature realization of post-quantum secure signature schemes. They are recommended for long-term use cases like e.g. firmware signing. However, stateful signature schemes require to properly manage a so-called state. In stateful signature schemes like LMS and XMSS, signing keys consist of a set of keys of a one-time signature scheme and it has to be guaranteed that each one-time key is used only once. This is done by updating a state in each signature computation, basically recording which one-time keys have already been used. While this is straightforward in centralized systems, in distributed systems like secure enclaves consisting of e.g. multiple hardware security modules (HSMs) with limited communication keeping a distributed state that at any point in time is consistent among all parties involved presents a challenge. This challenge is not addressed by the current standardization processes. In this paper we present a security model for the distributed key management of post-quantum secure stateful signatures like XMSS and LMS. We also present a simple, efficient, and easy to implement protocol proven secure in this security model, i.e. the protocol guarantees at any point in time a consistent state among the parties in a distributed system, like a distributed security enclave. The security model is defined in the universal composabilty (UC) framework by Ran Canetti by providing an ideal functionality for the distributed key management for stateful signatures. Hence our protocol remains secure even if arbitrarily composed with other instances of the same or other protocols, a necessity for the security of distributed key management protocols. Our main application are security enclaves consisting of HSMs, but the model and the protocol can easily be adapted to other scenarios of distributed key management of stateful signature schemes.}}, author = {{Blömer, Johannes and Bröcher, Henrik and Krummel, Volker and Porzenheim, Laurens Alexander}}, keywords = {{distributed state, hash-based signature, stateful hash-based signature, universal composability, secure enclave}}, pages = {{22}}, title = {{{Secure Distributed State Management for Stateful Signatures with a Practical and Universally Composable Protocol}}}, year = {{2025}}, } @inproceedings{59091, abstract = {{Abstract. Liquid Metal Embrittlement (LME) cracking is a well-documented issue encountered during resistance spot welding (RSW) of zinc-coated advanced high-strength steels (AHSS) in automotive manufacturing. Given that existing research has predominantly focused on laboratory-scale samples and lacks investigation into the load-bearing capacity of joints under crash conditions, this study aims to fill these gaps by analyzing third-generation zinc-coated AHSS. S-Rail components were produced through stamping to replicate real-world manufacturing conditions and geometries of automotive parts. To account for the disturbances typically encountered in production, samples with LME cracks were intentionally fabricated. Subsequently, a modified three-point bending test, assisted by numerical simulations, was developed to effectively apply loads to the weld spots of the S-Rail components. Results from crash tests demonstrated that observed light crack severity does not significantly compromise the joint's load-bearing capacity or lead to earlier joint failure.}}, author = {{Yang, Keke and Biegler, Max and Happe, Linus and Striewe, Marius and Olfert, Viktoria and Hein, David and Rethmeier, Michael and Meschut, Gerson}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, publisher = {{Materials Research Forum LLC}}, title = {{{Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components}}}, doi = {{10.21741/9781644903551-42}}, volume = {{52}}, year = {{2025}}, } @inproceedings{60604, abstract = {{Abstract. In the field of online condition monitoring, non-destructive testing methods using active acoustic testing [1] emerged as innovative tools. These techniques are particularly effective because damage in joined structures leads to significant changes in their vibrational characteristics. However, the consistent use of online condition monitoring through active acoustic testing combined with complex pattern recognition for early crack detection in joined components has not yet been fully established. This research aims to develop an online crack detection system employing pattern recognition techniques under cyclic loading during fatigue tests, utilizing non-contact active acoustic testing with laser vibrometry. Due to the wide range of materials that can be joined, mechanical joining processes can be used in many different industry branches. Self-pierce riveting (SPR), in particular, is a well-established joining process. Therefore, the investigations for online crack detection initially focus on SPR joints. To achieve this, the fatigue behavior of SPR joints in a lap-shear configuration was characterized. Experimental fatigue testing demonstrated that SPR joint failure occurs either through cracks propagating in the sheet material away from the rivet or in the rivet foot, depending on the material combination. Laser vibrometry has been successfully used as a crack detection system and has proven to be effective in detecting crack initiation in SPR joints. Cracks can be detected without contact regardless of the material combination, the damage location, the size of the damage, or the type of damage. The optimization of the crack detection system involved several key enhancements, including adjusting data acquisition to improve crack detection, incorporating principal component analysis (PCA) to reduce dimensionality, and implementing a classification model based on a global training dataset. An intuitive, problem-specific software demonstrator for analyzing the crack initiation behavior of SPR joints under cyclic loading was developed and iteratively optimized. Future work will focus on the implementation of an autoencoder network to further enhance crack detection capabilities.}}, author = {{Olfert, Viktoria and Yang, Keke and Gollnick, Maik and Krause, Jacob and Hein, David and Meschut, Gerson}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, publisher = {{Materials Research Forum LLC}}, title = {{{Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry}}}, doi = {{10.21741/9781644903599-154}}, volume = {{54}}, year = {{2025}}, } @inbook{55089, author = {{Grewe, Felix}}, booktitle = {{Festschrift - Mary Ellen Waithe}}, editor = {{Hagengruber, Ruth Edith}}, publisher = {{Springer}}, title = {{{Rebellious Witnesses: Why a Reorientation of Patriarchal Scientific and Social Culture is Urgently Needed}}}, year = {{2025}}, } @article{58623, abstract = {{Serial storytelling, characterized by its interplay of vertical (episodic) and horizontal (long-form) narrative structures, offers a unique opportunity for media literacy in English as a Foreign Language (EFL) education. This paper argues for the development of a serial literacy framework, a concept that expands traditional film literacy models to accommodate the distinct demands of serialized narratives. By using Inventing Anna (Rhimes, 2022) as a case study, the study explores how serial storytelling fosters engagement with themes of identity construction, ethical ambiguity, and transmedial storytelling. This paper elaborates on serial literacy, considering its implications within foreign language learning contexts. The study highlights how serialized narratives cultivate critical thinking, communicative competence, and media awareness, which renders them a valuable pedagogical tool. By integrating serial literacy into EFL curricula, educators can bridge students’ media consumption habits with analytical engagement and thus foster a generation of critically literate media consumers and producers. This paper elaborates on serial literacy, considering its implications within foreign language learning contexts. The study highlights how serialized narratives cultivate critical thinking, communicative competence, and media awareness, which renders them a valuable pedagogical tool. By integrating serial literacy into EFL curricula, educators can bridge students' media consumption habits with analytical engagement and thus foster a generation of critically literate media consumers and producers. }}, author = {{Intveen, Julie and Illigens, Tim}}, journal = {{Journal of Media Literacy Education}}, number = {{3}}, pages = {{17--30}}, publisher = {{The University of Rhode Island}}, title = {{{Beyond The Episode: A Case For Serial Literacy in EFL Education}}}, doi = {{https://doi.org/10.23860/JMLE-2025-17-3-3}}, volume = {{17}}, year = {{2025}}, } @article{61447, author = {{Intveen, Julie and Janzen, Thomas}}, journal = {{MEIN FACH - Englisch Sek II}}, pages = {{1--5}}, publisher = {{Bergmoser + Höller}}, title = {{{The Political Era of Taylor Swift - Exploring the influence of Miss Americana at the ballot box}}}, volume = {{6}}, year = {{2025}}, } @inproceedings{59895, abstract = {{The generation of optically broadband Nyquist pulse sequences using an integrated Mach-Zehnder modulator (MZM) in a thin-film lithium-niobate (TFLN) platform with repetition rates of 5 to 32 GHz and optical bandwidths of up to 160 GHz is demonstrated. Nyquist pulse sequences with high optical bandwidth can be used as synchronization and control signals in quantum sources based on photon pair generation.}}, author = {{Kress, Christian and Mihaylov, Martin Miroslavov and Schwabe, Tobias and Silberhorn, Christine and Scheytt, J. Christoph}}, booktitle = {{PIERS Proceedings }}, location = {{Abu Dhabi}}, publisher = {{PhotonIcs and Electromagnetics Research Symposium (PIERS)}}, title = {{{Broadband Nyquist Pulse Generation on TFLN Platform for Integrated Quantum Source}}}, doi = {{https://doi.org/10.1109/PIERS-Spring66516.2025.11276835}}, year = {{2025}}, } @inproceedings{63434, author = {{Hoffmann, Max}}, booktitle = {{Proceedings of the Fourteenth Congress of the European Society for Research in Mathematics Education (CERME14)}}, editor = {{Bosch, Marianna and Bolondi, Giorgio and Carreira, Susana and Michael, Gaidoschik and Camilla, Spagnolo}}, keywords = {{hoffmann, reviewed, proceedings}}, title = {{{Using scriptwriting as a response format for interface tasks: Exemplary analyses in the context of symmetry}}}, year = {{2025}}, } @article{63433, author = {{Hoffmann, Max}}, journal = {{mathematik lehren}}, number = {{253}}, pages = {{39--44}}, title = {{{Digitale Perspektiven auf das Heron-Verfahren}}}, doi = {{https://doi.org/10.5555/ml-253-2025_07}}, year = {{2025}}, } @article{62000, author = {{Claes, Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}}, issn = {{2681-4617}}, journal = {{Acta Acustica}}, number = {{65}}, publisher = {{EDP Sciences}}, title = {{{Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters}}}, doi = {{10.1051/aacus/2025044}}, volume = {{9}}, year = {{2025}}, } @article{54837, author = {{Claes, Leander and Lankeit, Johannes and Winkler, Michael}}, issn = {{1793-6314}}, journal = {{Mathematical Models and Methods in Applied Sciences}}, number = {{11}}, pages = {{2465--2512}}, publisher = {{World Scientific Pub Co Pte Ltd}}, title = {{{A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions}}}, doi = {{10.1142/s0218202525500447}}, volume = {{35}}, year = {{2025}}, } @inproceedings{62299, author = {{Friesen, Olga and Scheidemann, Claus and Claes, Leander and Hemsel, Tobias and Henning, Bernd}}, booktitle = {{2025 International Congress on Ultrasonics}}, pages = {{138–141}}, publisher = {{AMA Service GmbH}}, title = {{{Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer}}}, doi = {{10.5162/ultrasonic2025/a18-a4}}, year = {{2025}}, } @inproceedings{62298, author = {{Kuess, Raphael and Friesen, Olga and Henning, Bernd and Walther, Andrea}}, booktitle = {{2025 International Congress on Ultrasonics}}, pages = {{134–137}}, publisher = {{AMA Service GmbH}}, title = {{{Identification of temperature-dependent material parameter functions in piezoelectricity}}}, doi = {{10.5162/ultrasonic2025/a18-a3}}, year = {{2025}}, } @inproceedings{59689, author = {{Friesen, Olga and Meihost, Lars and Koch, Kevin and Claes, Leander and Henning, Bernd}}, location = {{Copenhagen}}, title = {{{Estimation of piezoelectric material parameters under varying electric field conditions}}}, doi = {{10.71568/DASDAGA2025.078}}, year = {{2025}}, } @inproceedings{62174, author = {{Meise, Adrian Tobias and Cord-Landwehr, Tobias and Haeb-Umbach, Reinhold}}, booktitle = {{ ITG Conference on Speech Communication}}, isbn = {{978-3-8007-6617-8}}, location = {{Berlin}}, title = {{{On the Application of Diffusion Models for Simultaneous Denoising and Dereverberation}}}, year = {{2025}}, } @article{63452, abstract = {{ABSTRACT The chemical reactivity of molecules can be controlled by a variety of effects, ranging from chemical reagents to purely physical stimuli. Metal tips employed in scanning probe microscopy are an elegant tool to manipulate reactive centers in single molecules. However, to achieve excellent control over distance and orientation, it is crucial to immobilize the reactive center and align it along the direction of the tip. Here, we aligned a reactive alkyne center via a rigid triphenylmethane‐based tripod for upright adsorption on Au(111) for inducing bond weakening in the alkyne moiety by approaching a silver tip. Single‐molecule ultrahigh vacuum low‐temperature tip‐enhanced Raman scattering was employed for probing tip‐induced bond weakening in the gap distance range from 550 to 250 pm. Both the ≡C–H stretching at ~3330 cm −1 and the dominant –C≡C– stretching peak at ~2130 cm −1 exhibit a shift to smaller wavenumbers due to tip‐induced bond weakening and an exponential increase in Raman intensity originating from the increased local electric field in the nanogap. To rationalize the underlying physical contributions and chemical effects of tip‐induced bond weakening, density functional theory calculations for gap distances in the range 800 to 100 pm were performed. The computational results confirmed the presence of different gap distance regimes including the onset of Pauli repulsion for short distances; for the latter, the calculations additionally predict structural distortions of the terminal alkyne induced by the nearby metal tip. These findings allow us to set a lower limit for the tip–tripod gap distance in studies requiring an intact upright configuration of the alkyne‐tripod, for example, electric field‐induced chemistry. }}, author = {{Li, Gang and Mennicken, Simon and Zhu, Lu‐Yao and Ehtesabi, Sadaf and Reichenauer, Till and Kupfer, Stephan and Schäfer, Daniel and Mehrparvar, Saber and Haberhauer, Gebhard and Zhang, Yao and Gräfe, Stefanie and Schlücker, Sebastian and Dong, Zhen‐Chao}}, issn = {{0377-0486}}, journal = {{Journal of Raman Spectroscopy}}, publisher = {{Wiley}}, title = {{{Probing Metal Tip‐Induced Bond Weakening of a Reactive Alkyne Center Aligned via a Rigid Triphenylmethane‐Based Tripod on Au(111) by TERS and DFT}}}, doi = {{10.1002/jrs.70084}}, year = {{2025}}, } @inbook{63461, author = {{Bartmann, Finn and Riedl, Alexander and Moritzer, Elmar}}, booktitle = {{Lecture Notes in Mechanical Engineering}}, isbn = {{9783032073914}}, issn = {{2195-4356}}, publisher = {{Springer Nature Switzerland}}, title = {{{Creep Effects of Thermoplastic Flange Systems}}}, doi = {{10.1007/978-3-032-07392-1_39}}, year = {{2025}}, }