@inproceedings{63524, abstract = {{Recommendation systems are essential for delivering personalized content across e-commerce and streaming services. However, traditional methods often fail in cold-start scenarios where new items lack prior interactions. Recent advances in large language models (LLMs) offer a promising alternative. In this paper, we adopt the retrieve-and-recommend framework and propose to fine-tune the LLM jointly on warm-and cold-start next-item recommendation tasks, thus, mitigating the need for separate models for both item types. We computationally compare zero-shot prompting, in-context learning, and fine-tuning using the same LLM backbone, and benchmark them against strong PLM-based baselines. Our findings provide practical insights into the trade-offs between accuracy and computational cost of these methods for next-item recommendation. To enhance reproducibility, we release the source code under https://github. com/HayaHalimeh/LLMs-For-Next-Item-Recommendation.git.}}, author = {{Halimeh, Haya and Freese, Florian and Müller, Oliver}}, booktitle = {{International Conference on Information Systems Development}}, issn = {{2938-5202}}, publisher = {{University of Gdansk, Department of Business Informatics & University of Belgrade, Faculty of Organizational Sciences}}, title = {{{LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning}}}, doi = {{10.62036/isd.2025.68}}, year = {{2025}}, } @inproceedings{63523, abstract = {{Data spaces have become a strategic pillar of Europe's digital agenda, enabling sovereign, legally compliant data sharing within decentralized ecosystems. As data space initiatives evolve, personalized recommendations are increasingly recognized as key use cases. However, traditional recommendation approaches typically rely on centralized aggregation of user behavior data-directly conflicting with the core ethos of data spaces: sovereignty, privacy, and trust. Federated recommendation systems offer a promising alternative by training models locally and exchanging only intermediate parameters to build a global model. Despite this potential, the integration of federated recommendation techniques and data space architectures remains largely underexplored in research and practice. This paper addresses this gap by designing and evaluating a prototype of a federated recommendation system specifically tailored for data spaces and compliant with their underlying infrastructure. Our findings highlight the viability of developing privacy-preserving, collaborative recommendation systems within data spaces, and contribute to the broader adoption of AI across these emerging ecosystems.}}, author = {{Halimeh, Haya and zur Heiden, Philipp}}, booktitle = {{2025 27th International Conference on Business Informatics (CBI)}}, publisher = {{IEEE}}, title = {{{Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces}}}, doi = {{10.1109/cbi68102.2025.00019}}, year = {{2025}}, } @inproceedings{63525, abstract = {{Recommender systems (RS) can support sustainable development by steering users toward more sustainable choices. Sustainability-aware explanations represent one avenue for contributing to this goal by foregrounding the environmental and social aspects of the recommended products or services. This paper advances the line of research on sustainability-aware explanations by integrating nudging mechanisms into their design and by evaluating their effectiveness through a randomized between-subjects online vignette experiment across two item domains (). Our findings offer actionable design guidelines for building RS that foster sustainability-aware decision making and enrich the empirical foundation for impact-oriented research on explanation in RS. }}, author = {{Halimeh, Haya and Müller, Oliver}}, location = {{Prague, Czech Republic}}, title = {{{Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations}}}, doi = {{10.1007/978-3-032-13342-7}}, year = {{2025}}, } @unpublished{61922, abstract = {{We present an extremely simple polynomial-space exponential-time $(1-\varepsilon)$-approximation algorithm for MAX-k-SAT that is (slightly) faster than the previous known polynomial-space $(1-\varepsilon)$-approximation algorithms by Hirsch (Discrete Applied Mathematics, 2003) and Escoffier, Paschos and Tourniaire (Theoretical Computer Science, 2014). Our algorithm repeatedly samples an assignment uniformly at random until finding an assignment that satisfies a large enough fraction of clauses. Surprisingly, we can show the efficiency of this simpler approach by proving that in any instance of MAX-k-SAT (or more generally any instance of MAXCSP), an exponential number of assignments satisfy a fraction of clauses close to the optimal value.}}, author = {{Buhrman, Harry and Gharibian, Sevag and Landau, Zeph and Gall, François Le and Schuch, Norbert and Tamaki, Suguru}}, booktitle = {{SIAM Symposium on Simplicity in Algorithms (SOSA)}}, title = {{{A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT}}}, year = {{2025}}, } @techreport{63026, author = {{Althaus, Maike and Beverungen, Daniel and Flath, Beate and Halimeh, Haya and Hansmeier, Philipp and zur Heiden, Philipp and Kundisch, Dennis and Müller, Michelle and Müller, Oliver and Oberthür, Simon and Vorbohle, Christian and Momen Pour Tafreshi, Maryam and Mauß, Sebastian and Mücke, Alina and Müller, Jörg and Peter, Malte and Schmitt-Chandon, Ariane and Sellerberg, Kerstin and Steinhäuser, Moritz}}, title = {{{Positionspapier Use Case 1: Vernetzte Kulturplattformen}}}, year = {{2025}}, } @inproceedings{63527, author = {{Henkenjohann, Mark and Nolte, Udo and Jahneke, Julien and Reimer, Oliver and Abrams, Stefan and Sion, Fabian and Henke, Christian and Trächtler, Ansgar and Schubert, Sebastian and Pfifer, Harald}}, booktitle = {{AIAA SCITECH 2025 Forum}}, publisher = {{American Institute of Aeronautics and Astronautics}}, title = {{{Dynamic Wind Tunnel Testing of an INDI-Based Flight Controller for a Tiltrotor-VTOL}}}, doi = {{10.2514/6.2025-2083}}, year = {{2025}}, } @inproceedings{63528, author = {{Reiling, Fabian and Bause, Maximilian and Gröger, Stefan and Henke, Christian and Koppert, Steven and Trächtler, Ansgar}}, booktitle = {{2025 11th International Conference on Automation, Robotics, and Applications (ICARA)}}, publisher = {{IEEE}}, title = {{{Development of a Learning-Based Control System for Robot-Assisted Grinding of Rubber Roller}}}, doi = {{10.1109/icara64554.2025.10977606}}, year = {{2025}}, } @article{62652, abstract = {{Driven by the urgent need for a green, safe, and cost‐effective approach to producing H2 and H2O2—both highly valuable in green energy and environmental protection fields—piezocatalysis, which converts mechanical energy into valuable chemicals, has emerged as a promising solution. However, current catalyst systems face challenges due to the need for materials with both a strong piezoelectric effect and favorable catalytic activity. Herein, the construction of an oxidized carbon nitride (g‐C3N4) matrix anchored with TiO2 nanoparticles via alkaline hydrothermal treatment is reported. Under ultrasonication, the g‐C3N4/TiO2 composite exhibits optimal performance under carefully controlled alkaline hydrothermal conditions. With a low concentration of Ba(OH)2 during hydrothermal treatment, Ba(OH)2 provides an alkaline medium, oxidizing the g‐C3N4 species and introducing structural defects into the g‐C3N4 framework. The disruption of the g‐C3N4 matrix, along with its interaction with TiO2 nanoparticles, enhances the piezoelectric effect. Consequently, the oxidized g‐C3N4/TiO2 composite achieves a remarkable H2 production rate of 4427.2 μmol g−1 and an H2O2 production rate of 809.3 μmol g−1 within 1 h without the addition of any sacrificial agents or cocatalysts. This work presents an effective strategy for the structural optimization of g‐C3N4‐based materials and may inspire new approaches for designing advanced piezocatalysts.}}, author = {{Pan, Ying and Liao, Luocheng and Zhang, Xinwen and Liu, Yunya and Su, Ran and Lopez Salas, Nieves}}, issn = {{1864-5631}}, journal = {{ChemSusChem}}, number = {{19}}, publisher = {{Wiley}}, title = {{{Oxidation‐Enhanced Piezocatalytic Activity in Carbon Nitride‐Based Catalysts for Hydrogen and Hydrogen Peroxide Production}}}, doi = {{10.1002/cssc.202500980}}, volume = {{18}}, year = {{2025}}, } @article{62654, abstract = {{Abstract Cationic gold catalyzed acetylene hydrochlorination represents a classical landmark in eliminating global mercury pollution, but their sustainable implementation is hindered by acetylene‐dependence design criteria and high operating temperatures. Herein, a platform of carbon‐supported single‐atoms Au catalysts (Au/BC and Au/NC) with polarized charge characteristics are developed via engineering Au sites with hosted B, N configurations. The negatively charged Au/BC catalyst unlocks the low‐temperature inactivity (413–423K) of the Au/NC catalyst while exhibiting superior catalytic performance in the 433–473K operating temperature range. We confirm that the classical scaling relationships on acetylene can be broken by narrowing the adsorption capacity between acetylene and HCl on Au δ⁻ sites via facilitating the back‐donation of d electrons into the antibonding orbitals of acetylene. Prolonging the durability of Au catalysts is achieved through preceding an additional robust Au δ⁻ → Au δ⁺ cycle prior to the classic Au δ⁺ → Au 0 route. This work opens a promising avenue for low temperature vinyl chloride production. }}, author = {{Li, Chun and Liu, Ruoting and Zhang, Zilong and Zuo, Fangmin and Jiang, Tingting and Zhang, Haifeng and Wang, Bolin and Lopez Salas, Nieves}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, number = {{29}}, publisher = {{Wiley}}, title = {{{Engineering Charge Polarized Au Sites for Low‐Temperature Acetylene Hydrochlorination}}}, doi = {{10.1002/anie.202501370}}, volume = {{64}}, year = {{2025}}, } @article{62651, abstract = {{ Aqueous zinc (Zn)‐ion capacitors (AZICs) have addressed considerable attention due to their high energy density, low toxicity, and rich abundance of Zn metal. However, the development of ultra‐long cycle life and high energy density AZICs is often hindered by the lack of adequately optimized active carbon (AC) electrodes and compatible electrolytes. Herein, high‐performance, free‐standing AC electrodes for AZICs are derived from sustainable precursors—adenine and D‐ribose—using magnesium chloride hexahydrate as an activation agent via a eutectic template strategy. Furthermore, an aqueous hybrid electrolyte tailored to the designed AC electrodes is developed, significantly enhancing the stability and cycle life of AZICs. The resulting AZIC achieves a high specific capacity of 164.39 F g −1 at 0.1 A g −1 and a magnificently long cell life of over 50 000 cycles with nearly 94.5% capacitance retention at 10 000 th cycles, and 76.3% at 50 000 th cycle. The pouch cell assembly also demonstrates comparable specific capacitance and energy density to the coin cell, underscoring the potential of large‐scale applications of AZICs. }}, author = {{Tao, Li and Li, Chun and Lu, Xuejun and Mir, Rameez Ahmad and Lopez Salas, Nieves and Liu, Jian}}, issn = {{2566-6223}}, journal = {{Batteries & Supercaps}}, number = {{11}}, publisher = {{Wiley}}, title = {{{Adenine and D‐Ribose Coderived Activated Carbon with N‐Methyl‐2‐Pyrrolidone‐Modified Aqueous Electrolyte for Long‐Life Zinc‐Ion Capacitors}}}, doi = {{10.1002/batt.202500161}}, volume = {{8}}, year = {{2025}}, } @article{62653, abstract = {{Enhanced bifunctional electrocatalysis via CuSe2/FeSe2 heterojunctions for efficient water splitting was achieved.}}, author = {{Kumari, Sandhyawasini and Pahra, Swapna and Tripathy, Amrita and Sumanth, N. and Lopez Salas, Nieves and Tiwari, Santosh K. and Khan, Afaq Ahmad and Devi, Pooja and Santosh, M. S.}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, number = {{33}}, pages = {{19253--19265}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Interfacial engineering of CuSe2/FeSe2 heterojunctions for water splitting: a pathway to high-performance hydrogen and oxygen evolution reactions}}}, doi = {{10.1039/d5nr01393c}}, volume = {{17}}, year = {{2025}}, } @article{62655, abstract = {{Green pea peel (GPP) is a waste, and it is abundant and available to be used for biochar synthesis.}}, author = {{Makinde, Wasiu Olakunle and Hassan, Mohsen A. and Semida, Wael M. and Pan, Ying and Guan, Guoqing and Lopez Salas, Nieves and Khalil, Ahmed S. G.}}, issn = {{2046-2069}}, journal = {{RSC Advances}}, number = {{20}}, pages = {{15819--15831}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Heteroatom co-doped green pea peel-derived biochar for high-performance energy storage applications}}}, doi = {{10.1039/d5ra01262g}}, volume = {{15}}, year = {{2025}}, } @article{62657, abstract = {{Alkali metal doping is a new and promising approach to enhance the photo/electrocatalytic activity of NiS-based catalyst systems.}}, author = {{Dileepkumar, V. G. and Pahra, Swapna and Lopez Salas, Nieves and Basavaraja, B. M. and Khan, Afaq Ahmad and Sumanth, N. and Devi, Pooja and Santosh, M. S.}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, number = {{5}}, pages = {{2682--2691}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Enhancing NiS performance: Na-doping for advanced photocatalytic and electrocatalytic applications}}}, doi = {{10.1039/d4nr04293j}}, volume = {{17}}, year = {{2025}}, } @article{62656, author = {{Hu, Jiajun and Goberna-Ferrón, Sara and Simonelli, Laura and Lopez Salas, Nieves and García, Hermenegildo and Albero, Josep}}, issn = {{2574-0962}}, journal = {{ACS Applied Energy Materials}}, number = {{2}}, pages = {{1179--1188}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Fe and Sn Single-Site-Based Electrodes for High-Current CO2 Reduction in Acid Media and Stable Zn–CO2 Batteries}}}, doi = {{10.1021/acsaem.4c02704}}, volume = {{8}}, year = {{2025}}, } @article{62659, abstract = {{The growing rise in agricultural activities has resulted in an increase in unutilized waste which is a significant contributor to greenhouse gas emissions. This has led to a need for sustainable methods to add value to such waste. This work focused on the transformation of agricultural waste into usable products through alkaline treatment to obtain lignin and cellulose, and the evaluation of the derived lignin as a viable carbon precursor in energy storage applications. Laser scribing was used as a fast and simple strategy in producing laser-induced graphene (LIG) electrodes. Lignin was isolated from wheat straw using sodium hydroxide treatment. The pulp from the treatment was subjected to bleaching with sodium chlorite followed by acid hydrolysis to extract microcrystalline cellulose. Fourier-transform infrared spectroscopy (FTIR), Transmission electron microscopy, and Xray diffraction were used for characterization of the materials produced. The fabricated supercapacitor could achieve an areal capacitance (CA) of 5.12 mF/cm2 (0.02 mA/cm2). This study illustrated the successful valorization of wheat straw residue into microcrystalline cellulose and the use of extracted lignin in producing graphitic carbon electrodes for supercapacitors.}}, author = {{Katwesigye, Samuel and El-Khouly, Mohamed E. and Lopez Salas, Nieves and Khalil, Ahmed S.G.}}, issn = {{1662-9752}}, journal = {{Materials Science Forum}}, pages = {{115--120}}, publisher = {{Trans Tech Publications, Ltd.}}, title = {{{Sustainable Development of Graphene Electrodes for Supercapacitors through Laser Scribing of Agrowaste Derived Lignin}}}, doi = {{10.4028/p-fgw0gq}}, volume = {{1152}}, year = {{2025}}, } @misc{63051, author = {{Güsken, Nicholas Alexander}}, title = {{{Optical modulator and electronic apparatus including the same}}}, year = {{2025}}, } @article{63534, abstract = {{Boson sampling is a key candidate for demonstrating quantum advantage and has already yielded significant advances in quantum simulation, machine learning, and graph theory. In this work, a unification and extension of distinct forms of boson sampling is developed. The devised protocol merges discrete-variable scattershot boson sampling with continuous-variable Gaussian boson sampling. Therefore, it is rendered possible to harness the complexity of more interesting states, such as squeezed photons, in advanced sampling protocols. A generating function formalism is developed for the joint description of multiphoton and multimode light undergoing Gaussian transformations. The resulting analytical tools enable one to explore interfaces of different photonic quantum-information-processing platforms. A numerical simulation of unified sampling is carried out, benchmarking its performance, complexity, and scalability. Entanglement is characterized to exemplify the generation of quantum correlations from the nonlinear interactions of a unified sampler.}}, author = {{Bianchi, Luca and Marconi, Carlo and Ares, Laura and Bacco, Davide and Sperling, Jan}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, number = {{4}}, publisher = {{American Physical Society (APS)}}, title = {{{Unified boson sampling}}}, doi = {{10.1103/8hy1-m5gg}}, volume = {{7}}, year = {{2025}}, } @article{53414, abstract = {{By constructing a non-empty domain of discontinuity in a suitable homogeneous space, we prove that every torsion-free projective Anosov subgroup is the monodromy group of a locally homogeneous contact Axiom A dynamical system with a unique basic hyperbolic set on which the flow is conjugate to the refraction flow of Sambarino. Under the assumption of irreducibility, we utilize the work of Stoyanov to establish spectral estimates for the associated complex Ruelle transfer operators, and by way of corollary: exponential mixing, exponentially decaying error term in the prime orbit theorem, and a spectral gap for the Ruelle zeta function. With no irreducibility assumption, results of Dyatlov-Guillarmou imply the global meromorphic continuation of zeta functions with smooth weights, as well as the existence of a discrete spectrum of Ruelle-Pollicott resonances and (co)-resonant states. We apply our results to space-like geodesic flows for the convex cocompact pseudo-Riemannian manifolds of Danciger-Gu\'eritaud-Kassel, and the Benoist-Hilbert geodesic flow for strictly convex real projective manifolds.}}, author = {{Delarue, Benjamin and Monclair, Daniel and Sanders, Andrew}}, journal = {{Geometric and Functional Analysis (GAFA)}}, pages = {{673–735}}, title = {{{Locally homogeneous Axiom A flows I: projective Anosov subgroups and exponential mixing}}}, doi = {{10.1007/s00039-025-00712-2}}, volume = {{35}}, year = {{2025}}, } @article{53412, abstract = {{Let $M$ be a symplectic manifold carrying a Hamiltonian $S^1$-action with momentum map $J:M \rightarrow \mathbb{R}$ and consider the corresponding symplectic quotient $\mathcal{M}_0:=J^{-1}(0)/S^1$. We extend Sjamaar's complex of differential forms on $\mathcal{M}_0$, whose cohomology is isomorphic to the singular cohomology $H(\mathcal{M}_0;\mathbb{R})$ of $\mathcal{M}_0$ with real coefficients, to a complex of differential forms on $\mathcal{M}_0$ associated with a partial desingularization $\widetilde{\mathcal{M}}_0$, which we call resolution differential forms. The cohomology of that complex turns out to be isomorphic to the de Rham cohomology $H(\widetilde{ \mathcal{M}}_0)$ of $\widetilde{\mathcal{M}}_0$. Based on this, we derive a long exact sequence involving both $H(\mathcal{M}_0;\mathbb{R})$ and $H(\widetilde{ \mathcal{M}}_0)$ and give conditions for its splitting. We then define a Kirwan map $\mathcal{K}:H_{S^1}(M) \rightarrow H(\widetilde{\mathcal{M}}_0)$ from the equivariant cohomology $H_{S^1}(M)$ of $M$ to $H(\widetilde{\mathcal{M}}_0)$ and show that its image contains the image of $H(\mathcal{M}_0;\mathbb{R})$ in $H(\widetilde{\mathcal{M}}_0)$ under the natural inclusion. Combining both results in the case that all fixed point components of $M$ have vanishing odd cohomology we obtain a surjection $\check \kappa:H^\textrm{ev}_{S^1}(M) \rightarrow H^\textrm{ev}(\mathcal{M}_0;\mathbb{R})$ in even degrees, while already simple examples show that a similar surjection in odd degrees does not exist in general. As an interesting class of examples we study abelian polygon spaces.}}, author = {{Delarue, Benjamin and Ramacher, Pablo and Schmitt, Maximilian}}, journal = {{Transformation Groups}}, title = {{{Singular cohomology of symplectic quotients by circle actions and Kirwan surjectivity}}}, doi = {{10.1007/s00031-025-09924-0}}, year = {{2025}}, } @inbook{63543, abstract = {{Abstract Current megatrends are influencing industrial production and leading to ever shorter innovation cycles. The resulting fast pace of production requirements requires an accelerated development of production systems and an associated increase in efficiency in factory planning. Due to its knowledge-intensive activities, rough factory planning promises great potential to be supported in its activities by innovative technologies such as artificial intelligence. However, industrial companies face the challenge to recognize the potential of artificial intelligence (AI) in rough planning and to evaluate possible applications in their business context. As a result, a systematic approach for analyzing AI potential in rough factory planning was developed as part of this work. The system includes a procedural model and several artefacts used in it, which support the identification and evaluation of AI potential in organizations. This approach not only streamlines the planning process but also aligns with sustainable manufacturing principles by enhancing resource efficiency, promoting intelligent system design, and fostering innovation in product development and manufacturing processes.}}, author = {{Kürpick, Dominik and Disselkamp, Jan-Philipp and Lick, Jonas and Hovemann, Aschot and Dumitrescu, Roman}}, booktitle = {{Lecture Notes in Mechanical Engineering}}, isbn = {{9783031938900}}, issn = {{2195-4356}}, publisher = {{Springer Nature Switzerland}}, title = {{{Systematic AI Potential Analysis for Sustainable Rough Factory Planning}}}, doi = {{10.1007/978-3-031-93891-7_84}}, year = {{2025}}, }