@unpublished{64068, abstract = {{When do two irreducible polynomials with integer coefficients define the same number field? One can define an action of $\mathrm{GL}_2 \times \mathrm{GL}_1$ on the space of polynomials of degree $n$ so that for any two polynomials $f$ and $g$ in the same orbit, the roots of $f$ may be expressed as rational linear transformations of the roots of $g$; thus, they generate the same field. In this article, we show that almost all polynomials of degree $n$ with size at most $X$ can only define the same number field as another polynomial of degree $n$ with size at most $X$ if they lie in the same orbit for this group action. (Here we measure the size of polynomials by the greatest absolute value of their coefficients.) This improves on work of Bhargava, Shankar, and Wang, who proved a similar statement for a positive proportion of polynomials. Using this result, we prove that the number of degree $n$ fields such that the smallest polynomial defining the field has size at most $X$ is asymptotic to a constant times $X^{n+1}$ as long as $n\geq 3$. For $n = 2$, we obtain a precise asymptotic of the form $\frac{27}{π^2} X^2$.}}, author = {{Arango-Piñeros, Santiago and Gundlach, Fabian and Lemke Oliver, Robert J. and McGown, Kevin J. and Sawin, Will and Serrano López, Allechar and Shankar, Arul and Varma, Ila}}, booktitle = {{arXiv:2602.06943}}, title = {{{Counting number fields of fixed degree by their smallest defining polynomial}}}, year = {{2026}}, } @techreport{63835, abstract = {{This article examines the liquidity effects of a wealth tax on residential rental real estate. Using data from a real estate corporation, we simulate the effects of a wealth tax on cash flows from the rental operations. The level of detail of the data enables us to conduct analyses at the annual, regional and year of construction level. A comparison with real estate data from other sources supports external validity. The results of the simulation show that the introduction of a wealth tax can significantly reduce the cash flow from rental operations and lead to liquidity problems. On average over all observations, a wealth tax rate of 2% leads to a negative cash flow after all costs. In general, this finding implies that growth-oriented real estate is more affected by a wealth tax in terms of liquidity than rental yield-oriented real estate. Particularly in large cities with high market values but relatively low rents, the liquidity effects can be more than three times as high as in rural or industrial regions – potentially leading to a relative loss of investment attractiveness. As a wealth tax is decoupled from rental income, the tax burden is very sensitive to market developments, including the interest rate environment. As a result, investments in residential rental real estate are exposed to additional uncertainty. This additional tax uncertainty might impair the willingness to invest and should therefore be taken into account in political discussions on the reintroduction of a wealth tax.}}, author = {{Maiterth, Ralf and Piper, Yuri and Sureth-Sloane, Caren}}, title = {{{Liquidity Effects of a Wealth Tax on Residential Rental Real Estate}}}, doi = {{10.2139/ssrn.6147767}}, year = {{2026}}, } @inproceedings{64075, author = {{Humpert, Lynn and Graunke, Jannis and Cichon, Gerrit and Ammanagi, Anuradha and Schierbaum, Anja and Dumitrescu, Roman}}, booktitle = {{2025 IEEE International Symposium on Systems Engineering (ISSE)}}, publisher = {{IEEE}}, title = {{{Generative AI in Systems Engineering: Automated Creation of System Architectures and Early-Stage Calculation in the B2B Sector}}}, doi = {{10.1109/isse65546.2025.11370000}}, year = {{2026}}, } @inbook{64072, author = {{Vochatzer, Stefanie and Schorr, Sophia and Lieb, Daniel and Stange, Leah and Kamenik , Anna Maria}}, booktitle = {{Partizipative Forschung und Empowerment - Erkundungen in Feldern der Sozialen Arbeit }}, editor = {{Schär, Clarissa and Schnurr, Stefan and Berner, Heiko and Eßer, Florian and Richter, Elisabeth and Rosenlecherner-Urbanek, Doris and Schröer, Wolfgang}}, pages = {{123--136}}, publisher = {{Beltz Juventa }}, title = {{{Von der partizipativen Forschung zum Empowerment. Eine methodologische Bestimmung kollaborativer Autoethnografie }}}, year = {{2026}}, } @article{64109, abstract = {{Abstract We study the effect of education on health (hospital stays, number of diagnosed conditions, poor or bad self-rated health, and body mass index) over the life cycle, using German compulsory schooling reforms as a source of exogenous variation. Our results show clear correlations between educational attainment and better health across all age groups (30 to 74). However, we do not find causal relationships between additional schooling and health or health care utilization, neither earlier nor later in life. A simulated ex-post power analysis shows that this is not due to a lack of statistical power. One reason for the absence of effects may be that the studied compulsory schooling reforms succeeded in raising the educational attainment of the target group - individuals at the lowest educational margin - but did not lead to healthier employment opportunities.}}, author = {{Hollenbach, Johannes and Schmitz, Hendrik and Tawiah, Beatrice Baaba}}, issn = {{1618-7598}}, journal = {{The European Journal of Health Economics}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Life-cycle health effects of compulsory schooling}}}, doi = {{10.1007/s10198-025-01884-2}}, year = {{2026}}, } @article{64108, abstract = {{Abstract We study how gene-environment interactions between education and genetic endowments affect cognition in old age and use this setting to show that – even with a valid instrument – two-stage least squares (2SLS) estimates of interaction effects can be far away from the true effect. This is the case when treatment effects are heterogeneous and compliance to the instrument depends on the interaction variable. We suggest estimating marginal treatment effects to address this problem. Our estimation results show complementarities between education and genetic predisposition in determining later-life memory. The marginal treatment effect estimates suggest substantially larger gene-environment interactions than the 2SLS estimates.}}, author = {{Hollenbach, Johannes and Schmitz, Hendrik and Westphal, Matthias}}, issn = {{0013-0133}}, journal = {{The Economic Journal}}, publisher = {{Oxford University Press (OUP)}}, title = {{{Gene-environment interactions with essential heterogeneity}}}, doi = {{10.1093/ej/ueag010}}, year = {{2026}}, } @article{63777, author = {{ Hallmann, Nicole and Mahs, Marie and Grant , Lloyd-Spencer and Baier, Marla Ricarda and Cerezo Alarcon, Alina Luisa and Kepper, Florian and Steinhardt, Isabel}}, journal = {{die hochschullehre}}, title = {{{Selbstgesteuertes Lernen, Partizipation und das 4K-Modell. Lehre in der Kultur der Digitalität}}}, doi = {{10.3278/HSL2602W}}, year = {{2026}}, } @article{63834, abstract = {{Abstract Many Android apps collect data from users, and the European Union’s General Data Protection Regulation (GDPR) mandates clear disclosures of such data collection. However, apps often use third-party code, complicating accurate disclosures. This paper investigates how accurately current Android apps fulfill these requirements. In this work, we present a multi-layered definition of privacy-related data to correctly report data collection in Android apps. We further create a dataset of privacy-sensitive data classes that may be used as input by an Android app. This dataset takes into account data collected both through the user interface and system APIs. Based on this, we implement a semi-automated prototype that detects and labels privacy-related data collected by a given Android app. We manually examine the data safety sections of 70 Android apps to observe how data collection is reported, identifying instances of over- and under-reporting. We compare our prototype’s results with the data safety sections of 20 apps revealing reporting discrepancies. Using the results from two Messaging and Social Media apps (Signal and Instagram), we discuss how app developers under-report and over-report data collection, respectively, and identify inaccurately reported data categories. A broader study of 7,500 Android apps reveals that apps most frequently collect data that can partially identify users. Although system APIs consistently collect large amounts of privacy-related data, user interfaces exhibit some more diverse data collection patterns. A more focused study on various domains of apps reveals that the largest fraction of apps collecting personal data belong to the domain of Messaging and Social Media . Our findings show that location is collected frequently by apps, specially from the E-commerce and Shopping domain. However, it is often under-reported in app data safety sections. Our results highlight the need for greater consistency in privacy-aware app development and reporting practices. }}, author = {{Khedkar, Mugdha and Kumar Mondal, Ambuj and Bodden, Eric}}, issn = {{0928-8910}}, journal = {{Automated Software Engineering}}, number = {{2}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{A study of privacy-related data collected by Android apps}}}, doi = {{10.1007/s10515-025-00589-3}}, volume = {{33}}, year = {{2026}}, } @inbook{64128, author = {{Löper, Marwin Felix and Hellmich, Frank}}, booktitle = {{Empirische Perspektiven aus der Bildungsforschung: Wissenstransfer zwischen Empirie und Praxis}}, editor = {{Nonte, S and Reintjes, C and Grommé, E and Kaiser, T and Schlöpker, J}}, pages = {{271--280}}, publisher = {{Waxmann}}, title = {{{Prosoziales Verhalten von Kindern im inklusiven Grundschulunterricht. Die Bedeutung der Selbstwirksamkeit und der Perspektivenübernahme}}}, year = {{2026}}, } @inproceedings{64129, abstract = {{Selecting scan angles such that surface segments are aligned with straight X-ray paths (i.e., rays are tangential to the surface and therefore perpendicular to the local surface normal) is known to produce sharper transitions of those surface segments in the reconstructed volume. This enhances dimensional accuracy in sparse-view computed tomography (CT). However, existing approaches offer no direct means to exploit this criterion for automatic scan-angle optimization. We propose a method that uses a virtual representation of the CT setup, including an STL surface model of the inspected part, to automatically identify taskspecific scan angles. Using elementary vector calculus, the algorithm determines projection directions that generate tangential X-rays for targeted surface segments. To support different levels of geometric complexity, we introduce two variants of the angle-selection procedure. The methods were experimentally validated on two objects with distinct absorption and geometric characteristics. For a steel gauge block, employing the minimum number of task-specific projections required for surface-data completeness substantially outperformed a conventional high-projection scan. For a geometrically more complex test object, surface-related errors were still reduced within the region of interest. The proposed approach – particularly suited for flat surface structures and not accounting for image-degrading factors other than cone-beam artifacts – shows promise for high-throughput dimensional metrology of mono-material parts.}}, author = {{Butzhammer, Lorenz and Braun, Matthias Robert Oskar and Herath, Colin and Hausotte, Tino}}, booktitle = {{e-Journal of Nondestructive Testing}}, issn = {{1435-4934}}, location = {{Linz}}, number = {{3}}, publisher = {{NDT.net GmbH & Co. KG}}, title = {{{Higher accuracy with fewer projections? Automated scan angle selection for dimensional Computed Tomography based on a simple data completeness measure for the part surface}}}, doi = {{10.58286/32560}}, volume = {{31}}, year = {{2026}}, } @inproceedings{64131, author = {{Hermelingmeier, Lucas and Teutenberg, Dominik and Meschut, Gerson and Korten, Matthias and Urban, Peter and Marquardt, Raphael and Rethmeier, Michael}}, location = {{Köln}}, title = {{{Konzeptentwicklung für eine stahlintenisve zirkuläre und modulare Bauweise elektrisch angetriebener Fahrzeuge}}}, year = {{2026}}, } @article{62278, author = {{Spener, Anna Maria}}, journal = {{Jewish Visual Culture (Sonderheft der FKW // Zeitschrift für Geschlechterforschung und Visuelle Kultur)}}, title = {{{Vom Kaftan zur Kippa: Geschlechtlich codierte (Un-)Sichtbarkeiten in medialen Inszenierungen ‚des Jüdischen‘ in Berlin von den 1990er Jahren bis in die Gegenwart}}}, year = {{2026}}, } @inbook{64146, author = {{Spener, Anna Maria}}, booktitle = {{ WasserWesenWandel: Fluidität in (mehr-als-)literarischen Medien. Sammelband zur fünften studentischen Tagung des Fachbereichs Komparatistik an der Universität Paderborn}}, editor = {{Spener, Anna Maria}}, title = {{{Einleitung}}}, year = {{2026}}, } @inbook{58969, author = {{Topalovic, Elvira and Drepper, Laura and Blachut, Alisa}}, booktitle = {{Semantische Phänomene lehren und lernen. Linguistische Berichte (LB)}}, editor = {{Bücking, Sebastian and Gese, Helga and Kellermann, Katharina}}, publisher = {{Buske}}, title = {{{Kausalität im Längsschnitt. Funktionen und Formen von weil, denn, deshalb, deswegen, nämlich und da in der Textproduktion vom 4. bis zum 6. Schuljahr}}}, year = {{2026}}, } @techreport{64148, author = {{Elit, Stefan}}, publisher = {{LibreCat University}}, title = {{{„Rilke ist zu groß für uns“. Lyrische Parodistik als poetologische Praxis}}}, doi = {{10.17619/UNIPB/1-2499}}, year = {{2026}}, } @inproceedings{64152, author = {{Alberternst, B. and Kessing, K. and Böhm, Eva and Eggert, A. and Garnefeld, I. and Schaefers, T. and Steinhoff, Lena and Woisetschläger, D.}}, booktitle = {{2026 AMA Winter Academic Conference Proceedings}}, title = {{{A Relational Perspective on Responsibility for Sustainable Market Behavior}}}, year = {{2026}}, } @inproceedings{64151, author = {{Witte, Carina and Steinhoff, Lena and Husemann, K.}}, booktitle = {{ 2026 AMA Winter Academic Conference Proceedings}}, title = {{{Extending Transformative Service Research: How Commercial Services Shape Spiritual Well-Being}}}, year = {{2026}}, } @article{64158, abstract = {{ABSTRACT Electrification offers a promising route to reduce CO 2 emissions in the chemical sector. In distillation, heat pump integration such as mechanical vapor recompression (MVR) can replace fossil‐based utilities, but column parameters like pressure drop should be accurately considered when assessing integration potential. This work discusses the effect of feed preheating and column pressure drop on MVR integration potential. The two binary separation tasks, methanol–water and benzene–toluene, are analyzed to identify energetically optimal preheater and MVR design. In addition, MVR integration in a bioethanol vacuum distillation sequence is evaluated for utility demand, CO 2 emissions, and economic feasibility under varying pressure drops, preheating configurations, and cost and emission scenarios. }}, author = {{Hochhaus, Thorben and Siepmann, Sebastian and Grünewald, Marcus and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, publisher = {{Wiley}}, title = {{{Impact of Distillation Column Design on Potential for the Integration of Mechanical Vapor Recompression}}}, doi = {{10.1002/cite.70074}}, year = {{2026}}, } @book{63514, editor = {{Hagengruber, Ruth Edith and Wells, Aaron}}, publisher = {{Springer}}, title = {{{Du Châtelet and Kant. }}}, year = {{2026}}, } @article{64174, author = {{Häsel-Weide, Uta and Nührenbörger, Marcus}}, journal = {{Grundschule aktuell}}, number = {{173}}, pages = {{3--6}}, title = {{{Mathematische Basiskompetenzen. Diagnose und Förderung in der Grundschule.}}}, year = {{2026}}, }