@inproceedings{65267,
  author       = {{Hollenhorst, Viola and Riese, Julia and Kenig, Eugeny Y.}},
  location     = {{Luzern, Schweiz}},
  title        = {{{Investigation of Surface Roughness Effects on Flow Patterns and Thermal Performance in Additively Manufactured Channels}}},
  year         = {{2026}},
}

@inbook{65168,
  author       = {{Keuchen, Marion and Lindemeyer, Sabine}},
  booktitle    = {{Seelsorge im Lebensraum Schule. Ökumenische Perspektiven}},
  editor       = {{Igrec, Marie-Theres and Lehner-Hartmann, Andrea and Paulovics, Clemens and Rothgangel, Martin and Wenk, Anne-Kathrin}},
  isbn         = {{978-3-451-02651-5}},
  pages        = {{151--171}},
  publisher    = {{Herder}},
  title        = {{{Keuchen, Marion/ Lindemeyer, Sabine: Demokratiebildung anhand eines (schul-)seelsorglichen Rituals im Rahmen der Lehramtsausbildung}}},
  year         = {{2026}},
}

@article{65311,
  abstract     = {{Information Systems (IS) is rooted in systems theory. Systems theory offers powerful concepts to address challenges of growing system complexity and non-systemic design approaches in information systems. Despite its systemic origins, systems theory remains a peripheral topic in IS. The study addresses this gap by introducing a comprehensive framework of 52 systems-theoretical concepts to guide the design of complex IS artifacts. We synthesize scattered systems knowledge from diverse disciplines to provide a unified level of abstraction for complex information system design. We apply the framework to a use case of business reputation systems to show how the systems lens informs the design of a novel, complex information system. We make three key contributions to the literature. First, the framework provides a common ground for interdisciplinary research in information system design. Second, it offers a unified level of abstraction grounded in systems theory that serves as a coherent basis for artifact design. Third, it demonstrates the potential of systems theory as a foundational justificatory knowledge base. Furthermore, we provide guidance on applying the framework across multiple modes of reasoning, alongside further application guidelines. The study thus serves as a bridge between the body of systems knowledge and contextual design in IS.}},
  author       = {{Ibrahimli, Ulvi and Hemmrich, Simon and Winkelmann, Axel}},
  journal      = {{Communication of the Association for Information Systems}},
  keywords     = {{Information Systems Research, Systems Theory, System Complexity, System Design, Design Science}},
  publisher    = {{AIS}},
  title        = {{{Bridging Systems Theory and Information Systems: A Framework for Designing Complex Information Systems}}},
  doi          = {{https://aisel.aisnet.org/cais/vol58/iss1/37/}},
  year         = {{2026}},
}

@article{65316,
  abstract     = {{Metasurfaces are powerful tools for manipulating light using small structures on the nanoscale. In most metasurfaces, near-field couplings are treated as being unfavorable perturbations. Here, we experimentally investigate a structure consisting of sinusoidally modulated silicon waveguides where near-field coupling of local resonances leads to negative coupling, i.e., a negative coupling constant. This gives rise to wave-vector-dependent eigenstates of elliptical, linear, and circular polarizations. In particular, fully circular polarization states are not only present at a single point in momentum space (k-space) but also along a line. This circular polarization line, as well as a linear polarization line, emanates from a polarization degeneracy at the Dirac point. We experimentally validate the existence of these eigenstates and demonstrate the energy-, polarization-, and wave vector dependence of this metasurface as well as its sensitivity to fabrication tolerances. By tuning the incident k-vector, certain polarization-energy eigenstates are strongly reflected, allowing for uses in angle-tunable polarization filters and light sources.}},
  author       = {{Wetter, Helene and Wingenbach, Jan and Rehberg, Falk and Gao, Wenlong and Schumacher, Stefan and Zentgraf, Thomas}},
  issn         = {{2330-4022}},
  journal      = {{ACS Photonics}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}}},
  doi          = {{10.1021/acsphotonics.5c02865}},
  year         = {{2026}},
}

@inbook{65310,
  abstract     = {{Trust between client and consultant is perhaps the most important asset in con-sulting, as this is a highly intangible knowledge-intensive business that concerns is-sues of outstanding strategic and operational importance for the customers. Cli-ents who have not worked with a particular consultancy face considerable risk when they place an order while lacking reliable information about the service quality they can expect. There is a strong link between trust and reputation, as the positive reputation of a consultancy can act as a substitute for a new client’s missing individual experience with the provider, fostering trust in the service quali-ty. Thus, creating, maintaining, and demonstrating a good reputation is of signifi-cant importance for consultancies in a very competitive industry.
To facilitate trustworthy signals, we design and implement a novel reputation mechanism that carries a monetary weight stored on a blockchain network as an immutable, decentralized, and transparent ledger. Based on an implementation in the Ethereum network and subsequent evaluation, we conclude that the reputation mechanism can contribute to leveling information asymmetry and reducing risk while increasing reputation and trust. The mechanism lends itself to being used in other business-to-business scenarios that suffer from similar information asymmetries.}},
  author       = {{Hemmrich, Simon and Nissen, Volker}},
  booktitle    = {{ Advanced Studies in Consulting Research and Digitalization – A Scientific Update on the Digital Transformation of the Consulting Industry. Springer.}},
  editor       = {{Nissen, Volker}},
  keywords     = {{Reputation Systems, Consulting, Design Science Invention, Incentive, Blockchain, Monetary ratings, building trust, reduce information asymmetry consulting, B2B reputation system, consulting risk reduction, supplier evaluation system}},
  title        = {{{A blockchain-based reputation system for consulting}}},
  year         = {{2026}},
}

@inproceedings{65313,
  author       = {{Ibrahimli, Ulvi and Hemmrich, Simon and Winkelmann, Axel}},
  location     = {{Münster}},
  title        = {{{Reputation as a Sociotechnical Design Problem: A Social Systems Theory Lens for Business Reputation Systems}}},
  year         = {{2026}},
}

@article{63577,
  author       = {{Eberhartinger, Eva and Speitmann, Raffael and Sureth-Sloane, Caren}},
  journal      = {{Journal of International Accounting, Auditing and Taxation (JIAAT)}},
  title        = {{{Banks' tax disclosure, financial secrecy, and tax haven heterogeneity}}},
  doi          = {{10.1016/j.intaccaudtax.2026.100759}},
  volume       = {{60}},
  year         = {{2026}},
}

@article{65315,
  author       = {{Greil, Stefan and Kaluza-Thiesen, Eleonore and Schulz, Kim Alina and Sureth-Sloane, Caren}},
  journal      = {{eJournal of Tax Research}},
  title        = {{{Navigating Transfer Pricing Complexity: Standardization, Cooperation, Transparency}}},
  year         = {{2026}},
}

@inbook{44862,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{New Perspectives on Neo-Kantianism and the Sciences}},
  editor       = {{Pulte, Helmut  and Baedke, Jan and Koenig, Daniel and Nickel, Gregor}},
  pages        = {{17--37}},
  publisher    = {{Routledge}},
  title        = {{{(Neo-)Kantian Foundation of Foundations: The Göttingen Case}}},
  year         = {{2025}},
}

@article{32099,
  author       = {{Weich, Tobias and Budde, Julia}},
  journal      = {{Journal of Functional Analysis}},
  number       = {{1}},
  title        = {{{Wave Front Sets of Nilpotent Lie Group Representations}}},
  doi          = {{ https://doi.org/10.1016/j.jfa.2024.110684}},
  volume       = {{288}},
  year         = {{2025}},
}

@inbook{56854,
  author       = {{Schuster, Britt-Marie and Bubenhofer, Noah}},
  booktitle    = {{Germanistische Linguistik. Genese, Zustand und Zukunft eines Faches im Spiegel der RGL}},
  editor       = {{Schuster, Britt-Marie and Bubenhofer, Noah and Habermann, Mechthild and Hausendorf, Heiko}},
  pages        = {{1--18}},
  publisher    = {{de Gruyter}},
  title        = {{{Facetten der Germanistischen Linguistik: Bestandsaufnahme und Perspektiven}}},
  year         = {{2025}},
}

@book{56851,
  editor       = {{Schuster, Britt-Marie and Bubenhofer, Noah and Habermann, Mechthild and Hausendorf, Heiko}},
  title        = {{{Germanistische Linguistik. Genese, Zustand und Zukunft eines Faches im Spiegel der RGL}}},
  volume       = {{336}},
  year         = {{2025}},
}

@article{56960,
  author       = {{Black, Tobias}},
  issn         = {{0893-9659}},
  journal      = {{Applied Mathematics Letters}},
  publisher    = {{Elsevier BV}},
  title        = {{{Absence of dead-core formations in chemotaxis systems with degenerate diffusion}}},
  doi          = {{10.1016/j.aml.2024.109361}},
  volume       = {{161}},
  year         = {{2025}},
}

@inbook{57020,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>In this symposium we investigate students’ agency of selecting and using (digital) resources for developing their own learning paths. For that, we first review the literature related to students’ selection and use of resources in mathematics education in different pedagogical settings (presentation 1). Second, we develop insights from the different studies that participate in this symposium (presentation 2–6), at school as well as at university level. Results show that attempts have been made to provide students opportunities to develop agency of their mathematics learning, in particular with the development and provision of numerous digital tools and learning resources at university level and related to innovative pedagogical approaches. At the same time, it is not obvious how these tools and resources help students to develop deeper conceptual understandings. Certainly, students often ‘demand’ more student-centered and autonomous education approaches (e.g., at university level), also in mathematics education. Further, it seems that authentic problem-based education approaches are more motivating for students. These ‘innovative’ approaches necessitate particular types of structure and support for students. Moreover, they require different ways of providing resources that students can and want to interact with, and that help students to navigate through the curriculum to develop their own learning paths. At the same time, teachers also need support on how to orchestrate student learning with the available resources in such environments, so to be able to attend to students’ individual needs. The symposium comprised altogether six presentations:</jats:p><jats:p>Birgit Pepin &amp; Sebastian Rezat: Students’ agency of selecting and using (digital) resources for developing their own learning paths: An overview</jats:p><jats:p>Annalisa Cusi &amp; Agnese I. Telloni: Learning through digital curriculum resource design: students’ reflections on their role as designers</jats:p><jats:p>Vilma Mesa, Lelia Burley-Sanford, Xinyi Hao, &amp; Carlos Quiroz: Interactive features in university textbooks and their use by teachers and students</jats:p><jats:p>Sebastian Rezat: Fostering university students’ reading and understanding of mathematical text in a flipped classroom approach with a digital marking tool</jats:p><jats:p>Birgit Pepin &amp; Ulises Salinas: Challenge/problem-based mathematics learning at university level: The case of the modeling week</jats:p><jats:p>Farzad Radmehr: Problem-posing: An inclusive activity for improving teaching and learning of mathematics at university level</jats:p>}},
  author       = {{Pepin, Birgit and Rezat, Sebastian}},
  booktitle    = {{Recent Advances in Mathematics Textbook Research and Development}},
  editor       = {{Qi, Chunxia and Fan, Lianghuo and Liu, Jian and Liu, Qimeng and Dong, Lianchun}},
  isbn         = {{9789819784257}},
  pages        = {{123–126}},
  publisher    = {{Springer Nature}},
  title        = {{{Symposium—Towards innovative practices in mathematics education: Teachers’ and students’ choice and use of digital resources}}},
  doi          = {{10.1007/978-981-97-8426-4_17}},
  year         = {{2025}},
}

@inbook{57022,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Even in the digital age, learning mathematics at an academic level still requires much interaction with mathematical texts. Understanding and developing disciplinary literacy skills at all levels is an increasing matter of interest.</jats:p>}},
  author       = {{Rezat, Sebastian}},
  booktitle    = {{Recent Advances in Mathematics Textbook Research and Development}},
  editor       = {{Qi, Chunxia and Fan, Lianghuo and Liu, Jian and Liu, Qimeng and Dong, Lianchun}},
  isbn         = {{9789819784257}},
  pages        = {{133–136}},
  publisher    = {{Springer Nature}},
  title        = {{{Fostering university students’ reading and understanding of mathematical text in a flipped classroom approach with a digital marking tool}}},
  doi          = {{10.1007/978-981-97-8426-4_20}},
  year         = {{2025}},
}

@inbook{56852,
  author       = {{Schuster, Britt-Marie and Georgi, Christopher}},
  booktitle    = {{Germanistische Linguistik. Genese, Zustand und Zukunft eines Faches im Spiegel der RGL}},
  editor       = {{Schuster, Britt-Marie and Bubenhofer, Noah and Habermann, Mechthild and Hausendorf, Heiko}},
  pages        = {{189–220}},
  publisher    = {{de Gruyter}},
  title        = {{{Beispiele geben, Belege anführen und Daten erheben. Diachrone Untersuchung zur Herstellung empirischer Evidenz}}},
  volume       = {{336}},
  year         = {{2025}},
}

@inproceedings{58227,
  author       = {{Brockmeier, Jan and Kruse, Stephan and Scheytt, J. Christoph}},
  booktitle    = {{German Microwave Conference 2025}},
  location     = {{Dresden}},
  title        = {{{A Mach-Zehnder-Modulator based FMCW Lidar Emulator in C-Band}}},
  year         = {{2025}},
}

@inbook{58313,
  author       = {{Mildorf, Jarmila}},
  booktitle    = {{Pandemic Storytelling}},
  editor       = {{Alber, Jan and de Muijnck, Deborah and Jumpertz, Jessica }},
  isbn         = {{978-90-04-51985-5 }},
  pages        = {{83--96}},
  publisher    = {{Brill}},
  title        = {{{Crisis and Creativity: Poetry in Times of Corona}}},
  volume       = {{3}},
  year         = {{2025}},
}

@article{58351,
  author       = {{Godau, Marc and Maxelon, Dominik and Neuhausen, Timo}},
  journal      = {{Auditive Medienkulturen. ‘The Evolution of Sound’? Soundkulturelle Praktiken in Social Media-Mikroformaten}},
  keywords     = {{Algorithmen, Musikpraxis, Postdigitalität, Songwriting, TikTok}},
  title        = {{{Algorithmische Hyperawareness im Songwriting von Plattform-Musiker:innen. Postdigitale Subjektivität und die Transformation musikkultureller Praktiken auf TikTok und Co.}}},
  year         = {{2025}},
}

@article{58353,
  abstract     = {{<jats:title>Abstract</jats:title>
          <jats:p>Statistics and machine learning are critical because they play an essential role in our everyday lives and the careers we may pursue in the future. It may be beneficial to introduce machine learning, such as decision trees (DTs), at an early stage of education. The data-based construction of DTs is an example of a machine learning process, which can be addressed in mathematics or statistics teaching because of relatively low prior knowledge requirements. This paper focuses on investigating how sixth-grade students create and evaluate data-based DTs. The basis is a teaching unit that aims to lay the foundation for machine learning and enhance students’ understanding of the process. We investigate students’ processes in detail while they build DTs with data cards about food items to predict whether a new item is recommendable. After the teaching unit, an interview study examines students’ strategies for creating decision trees. The findings contribute to understanding students’ learning processes and the challenges when working with decision trees.</jats:p>}},
  author       = {{Podworny, Susanne and Biehler, Rolf and Fleischer, Yannik}},
  issn         = {{1863-9690}},
  journal      = {{ZDM – Mathematics Education}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Young students’ engagement with data to create decision trees}}},
  doi          = {{10.1007/s11858-024-01649-w}},
  year         = {{2025}},
}