@book{44083, author = {{Bauer, Anna Brigitte}}, isbn = {{978-3-8325-5625-9}}, publisher = {{Logos Verlag Berlin GmbH}}, title = {{{Experimentelle Kompetenz Physikstudierender. Entwicklung und erste Erprobung eines performanzorientierten Kompetenzstrukturmodells unter Nutzung qualitativer Methoden}}}, doi = {{10.30819/5625}}, volume = {{352}}, year = {{2023}}, } @inproceedings{44181, author = {{Beule, Felix and Schmelzle, Lars and Teutenberg, Dominik and Possart, Gunnar and Meschut, Gerson and Mergheim, Julia}}, booktitle = {{23. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Frankfurt}}, title = {{{Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung}}}, year = {{2023}}, } @misc{43374, author = {{Schürmann, Patrick}}, title = {{{ A Formal Comparison of Advanced Digital Signature Primitives}}}, year = {{2023}}, } @inproceedings{44183, author = {{Kowatz, Jannik and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{23. Kolloquium Gemeinsame Forschung in der Klebtechnik}}, location = {{Frankfurt a. M.}}, title = {{{Weiterentwicklung der induktiven Schnellhärtung von Klebverbindungen für robuste Fertigungsprozesse unter Berücksichtigung von serienrelevanten Einflussfaktoren}}}, year = {{2023}}, } @article{42515, abstract = {{ Microcellular wood fiber reinforced polymers offer the possibility to reduce the use of fossil raw materials. In particular, thick-walled structures with thicknesses greater than 6 mm offer a high potential for weight savings. This study investigates the cell structures and mechanical properties of injection-molded test specimens. The influence of different thicknesses (6–10 mm) along with different chemical blowing agents (endothermic, exothermic) with varying dosages (0–2 wt%) is analyzed. The investigations reveal that exothermic chemical blowing agents form finer cells consistently to thin-walled structures than endothermic ones. Higher foaming agent content leads to higher pore fractions, with many small cells coalescing into a large open-pore cell network. The mechanical properties depend mainly on the pore content of the sample. The specific tensile properties deteriorate with the use of chemical blowing agents (CFA), whereas the sandwich structure produced with compact edge layers has a positive influence on the specific flexural properties. }}, author = {{Moritzer, Elmar and Flachmann, Felix}}, issn = {{0021-955X}}, journal = {{Journal of Cellular Plastics}}, keywords = {{Materials Chemistry, Polymers and Plastics, General Chemistry}}, number = {{3}}, pages = {{187--199}}, publisher = {{SAGE Publications}}, title = {{{Morphological and mechanical properties of foamed thick-walled Wood-Plastic-Composite structures}}}, doi = {{10.1177/0021955x231161175}}, volume = {{59}}, year = {{2023}}, } @article{42179, author = {{Burmeister, Sascha Christian and Schryen, Guido}}, journal = {{Energy Systems}}, publisher = {{Springer}}, title = {{{Distribution Network Optimization: Predicting computation times to design scenario analysis for network operators}}}, doi = {{10.1007/s12667-023-00572-5}}, year = {{2023}}, } @inproceedings{44035, abstract = {{Abstract. Friction-spinning as an innovative incremental forming process enables large degrees of deformation in tube and sheet metal-forming due to a self-induced heat generation in the forming zone. This paper presents new process designs for energy and resource-efficient forming of gas cylinders by friction-spinning without the use of an external heat supply. The self-generated heat enables friction-spinning process to reduce the energy demand in the manufacture of gas cylinders, which are usually manufactured with external heat (mostly fossil fuels), by 95 %. Typical gas cylinder contours, such as flattened and spherical bottom ends and cylinder necks, are manufactured by friction-spinning of AW 6060 tubular profiles with specifically designed tool path strategies. It is shown that friction-spinning enables the manufacture of typical gas cylinder contours with sufficient wall thickness and the required gas tightness without the input of external heat. Thus, this process can contribute to an increase in the energy and resource efficiency of forming processes. }}, author = {{Dahms, Frederik and Homberg, Werner}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, location = {{Krakau}}, publisher = {{Materials Research Forum LLC}}, title = {{{Energy and Resource-efficient Forming of Gas Cylinders by Friction-Spinning}}}, doi = {{10.21741/9781644902479-208}}, year = {{2023}}, } @article{43391, abstract = {{The technical importance of paraffins as phase change materials (PCM) in heat storage systems increases. Knowledge on the thermal conductivity of paraffins is necessary for the design and optimization of heat storage systems. However, for most paraffins solely the thermal conductivity of the liquid state has been sufficiently investigated. For the solid state, precise thermal conductivity data are only known for a few paraffins, while only generalized values are available for the remainder, some of which contradict each other. In this study, a measurement setup based on the modified guarded hot plate method is developed. It is used to investigate the thermal conductivity of several paraffines in the solid state, including pure n-docosane and its compounds with different types and concentrations of graphite. For n-docosane in the solid state, the thermal conductivity is determined to be 0.49 W/(m K). A particle size of 200 μm with a spherical shape turns out to be optimal to increase the thermal conductivity. This allows the thermal conductivity of a compound with 10% graphite to increase by a factor of three compared to the pure paraffin. Furthermore, significant differences to thermal conductivity data from the literature are found.}}, author = {{Paul, Andreas and Baumhögger, Elmar and Dewerth, Mats-Ole and Hami Dindar, Iman and Sonnenrein, Gerrit and Vrabec, Jadran}}, issn = {{1388-6150}}, journal = {{Journal of Thermal Analysis and Calorimetry}}, keywords = {{Physical and Theoretical Chemistry, Condensed Matter Physics}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Thermal conductivity of solid paraffins and several n-docosane compounds with graphite}}}, doi = {{10.1007/s10973-023-12107-2}}, year = {{2023}}, } @inproceedings{43394, abstract = {{Die für die Berechnung des Energieeffizienzindex von Haushaltskältegeräten benötigten Parameter werden durch Norm-Messungen im Neuzustand der Geräte bestimmt. Aus früheren Untersuchungen ist bekannt, dass durch verschiedene technische Alterungsmechanismen der Energieverbrauch über eine Produktlebensdauer von 18 Jahren um bis zu 33 % zunehmen kann. Ziel des vom BMWi geförderten Projekts ALGE war es, die verschie-denen Ursachen und Einflussgrößen für die Alterung von Haushaltskältegeräten zu ermitteln und eine Alterungs-funktion zu bestimmen, die den zeitlichen Verlauf des zunehmenden Energieverbrauchs beschreibt. In diesem Projekt wurde das Alterungsverhalten von Haushaltskältegeräten durch 100 Normenergieverbrauchs-messungen an 32 real gealterten Geräten untersucht. Aus den gewonnenen Ergebnissen konnte eine Alterungs-funktion bestimmt werden, die den Anstieg des Energieverbrauchs beschreibt. Alle untersuchten Geräte wurden an der Universität Paderborn im Neuzustand vermessen und nach einer Laufzeit von bis zu 21 Jahren erneut geprüft. Bereits nach einem zweijährigen Betrieb konnte ein Mehrverbrauch von bis zu 11 % festgestellt werden. Über die durchschnittliche Produktlebensdauer von Haushaltskältegeräten von ca. 16 Jahren steigert sich der Energieverbrauch um durchschnittlich 27 %. Im Rahmen des Projekts wurden verschiedene Systemkomponenten, wie Isolierung und Verdichter, hinsichtlich ihres Alterungsverhaltens untersucht. Bei dem im Gehäuse als Isolierung verwendeten PUR-Schaum konnte über einen Zeitraum von 31 Monaten ein Anstieg der Wärmeleitfähigkeit von 19,5 W/(m⋅K) auf 24,5 W/(m⋅K) festge-stellt werden. Zur Untersuchung der Alterung der Verdichter wurden zuvor auf einem Kalorimeterteststand ver-messene Verdichter in Geräte eingebaut. Nach einem zweijährigen Betrieb wurden diese Verdichter wieder aus-gebaut und erneut vermessen. Hierbei konnte keine Änderung des COP festgestellt werden. Zusätzlich zu den technischen Parametern wurde der Einfluss des Verbraucherverhaltens analysiert. Hier zeigte sich, dass bis zu 33 % des Gesamtenergieverbrauchs nach einer mehrjährigen Nutzungsdauer verbraucherinduziert sein können.}}, author = {{Paul, Andreas and Baumhögger, Elmar and Elsner, Andreas and Reineke, Michael and Kasper, Tina and Schumacher, Daniel and Vrabec, Jadran and Hüppe, Christian and Stamminger, Rainer and Hölscher, Heike and Stoll, Ragnar and Wagner, Hendrik and Gries, Ulrich and Becker, Wolfgang}}, isbn = {{978-3-932715-55-6}}, keywords = {{Haushaltskältegeräte, Energieverbrauch, Alterung, Verdichter, PUR-Schaum}}, location = {{Magdeburg}}, publisher = {{Deutscher Kälte‐ und Klimatechnischer Verein e.V.}}, title = {{{Alterungsmechanismen von Haushaltskältegeräten}}}, year = {{2023}}, } @article{43034, abstract = {{Abstract The accessibility to rheological parameters for concrete is becoming more and more relevant. This is mainly related to the constantly emerging challenges, such as not only the development of high-strength concretes is progressing very fast but also the simulation of the flow behaviour is of high importance. The main problem, however, is that the rheological characterisation of fresh concrete is not possible via commercial rheometers. The so-called concrete rheometers provide valuable relative values for comparing different concretes, but they cannot measure absolute values. Therefore, we developed an adaptive coaxial concrete rheometer (ACCR) that allows the measurement of fresh concrete with particles up to d max = 5.5 mm {d}_{{\rm{\max }}}=5.5\hspace{.5em}{\rm{mm}} . The comparison of the ACCR with a commercial rheometer showed very good agreement for selected test materials (Newtonian fluid, shear thinning fluid, suspension, and yield stress fluid), so that self-compacting concrete was subsequently measured. Since these measurements showed a very high reproducibility, the rheological properties of the fresh concrete could be determined with high accuracy. The common flow models (Bingham (B), Herschel–Bulkley, modified Bingham (MB) models) were also tested for their applicability, with the Bingham and the modified Bingham model proving to be the best suitable ones.}}, author = {{Josch, Sebastian and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, issn = {{1617-8106}}, journal = {{Applied Rheology}}, keywords = {{Condensed Matter Physics, General Materials Science}}, number = {{1}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Development of an adaptive coaxial concrete rheometer and rheological characterisation of fresh concrete}}}, doi = {{10.1515/arh-2022-0140}}, volume = {{33}}, year = {{2023}}, } @inproceedings{44225, author = {{Jende, Yvonne Kristin}}, booktitle = {{Solidarités. Réseaux – Convivialités – Confrontations/ Solidarities. Networks – Convivialities – Confrontations, 44. Annual Conference of the Association for Canadian Studies in German-Speaking Countries}}, location = {{Grainau}}, title = {{{Please Mind the Gap. Reconfiguring Solidarity through Space in Michael Nicoll Yahgulanaas' Haida Manga Art.}}}, year = {{2023}}, } @article{43128, author = {{Rüther, Moritz Johannes and Klippstein, Sven Helge and Ponusamy, SathishKumar and Rüther, Torben and Schmid, Hans-Joachim}}, issn = {{0032-5910}}, journal = {{Powder Technology}}, keywords = {{General Chemical Engineering}}, publisher = {{Elsevier BV}}, title = {{{Flowability of polymer powders at elevated temperatures for additive manufacturing}}}, doi = {{10.1016/j.powtec.2023.118460}}, volume = {{422}}, year = {{2023}}, } @article{39057, author = {{Wippermann, Jan and Meschut, Gerson and Koschukow, Wikentji and Liebsch, Alexander and Gude, Maik and Minch, Steven and Kolbe, Björn}}, issn = {{0043-2288}}, journal = {{Welding in the World}}, keywords = {{Metals and Alloys, Mechanical Engineering, Mechanics of Materials}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Thermal influence of resistance spot welding on a nearby overmolded thermoplastic–metal joint}}}, doi = {{10.1007/s40194-023-01465-y}}, year = {{2023}}, } @article{44232, author = {{Wippermann, Jan and Koshukow, Wikentij and Liebsch, Alexander and Kolbe, Björn and Meschut, Gerson and Gude, Maik}}, journal = {{Tagungsband Münchener Leichtbauseminar 2022}}, title = {{{Influence of plasma coating pretreatment on the adhesion of thermoplastics to metals}}}, year = {{2023}}, } @inproceedings{44244, author = {{Ponusamy, SathishKumar and Schmid, Hans-Joachim}}, location = {{Braunschweig}}, title = {{{Dynamisch-mechanische Polymerpartikelverrundung zur Verbesserung der Fließfähigkeit für das selektive Lasersintern}}}, year = {{2023}}, } @inbook{44249, abstract = {{State education in honest tax payment can be understood as a facet of training in citizenship, i.e. as an attempt by the modern state to standardize the behavior of its citizens and to prevent deviations. Based on this Foucauldian understanding, this exploratory article examines tax education in the United States, Spain, and West Germany from the mid-1940s to the late 1980s. During this period, the USA asserted itself as the champion of tax education and Spain consistently tried to emulate this example, albeit with more modest means and different semantic strategies from as early as the 1960s, when it was still under a autoritarian regime. The FRG, however, completely discontinued its few early attempts at tax education from the mid-1950s onwards. Even during the economic crises and tax scandals of the 1970s, there was no relaunch of the programs. The article locates the reasons for this highly uneven development in the different ideal images of the citizen in the three states.}}, author = {{Schönhärl, Korinna and Düll, Nasrin and Ramírez Lugo , Nadya Melina}}, booktitle = {{Tax Evasion and Tax Havens since the Nineteenth Century }}, editor = {{Sébastien, Guex and Hadrien, Buclin}}, pages = {{355--376}}, publisher = {{Springer}}, title = {{{Tax Education After WWII: How Spain, the USA, and West Germany Tried to Make Their Citizens Pay Honestly}}}, year = {{2023}}, } @article{44264, author = {{Behler, Felix}}, issn = {{2754-2416}}, journal = {{Interdisciplinary Discourses, Education and Analysis (IDEA)}}, number = {{3}}, pages = {{5--21}}, title = {{{Recapturing Old England – Nostalgia, Aristo-Anglophilia, and the Historical Roots of ITV’s ‘Downton Abbey’}}}, volume = {{1}}, year = {{2023}}, } @inproceedings{44154, abstract = {{Abstract. Due to an increasing volume of shipments, there is a significant need for more delivery vehicles. One approach to reduce the associated increase in carbon dioxide (CO2) emissions is a new light weight design approach involving the substitution of conventional materials with glass fiber mat-reinforced thermoplastics (GMT) based on polypropylene (PP). The application of GMT by compression molding is a widely used process in the automotive industry. However, application in the commercial vehicle sector requires much larger dimensions, making it necessary to clarify whether the manufacturing process and material are suitable for semi-structural applications on this scale. To find this out, two replacement geometries are abstracted in this study and manufactured by varying the main manufacturing parameters. The feasibility can be demonstrated by recording and analyzing the resulting process variables and measuring the formed fiber distribution. At the end of the paper, recommendations are given for the production of GMT structures on the scale of commercial vehicles. }}, author = {{Lückenkötter, Julian and Leimbach, J.P. and Stallmeister, Tim and Marten, Thorsten and Tröster, Thomas}}, booktitle = {{Materials Research Proceedings}}, issn = {{978-1-64490-247-9}}, keywords = {{Compression Molding, Fiber Content, Process Development, Lightweight Design}}, location = {{Krakow, Poland}}, pages = {{249--258}}, publisher = {{Materials Research Forum LLC}}, title = {{{Feasibility Study of Compression Molding for Large Reinforcement Structures in the Commercial Vehicle Sector}}}, doi = {{10.21741/9781644902479-27}}, volume = {{28}}, year = {{2023}}, } @article{42679, abstract = {{The Saharan desert ant Cataglyphis bombycina is densely covered with shiny silver setae (hair-like structures). Their appearance was explained by geometric optics and total internal reflection. The setae also increase the emissivity of the ant, as they form an effective medium. This work provides additional data on microstructural details of the setae that are used to simulate the scattering of an individual seta to explain their influence on the optical properties. This is achieved by characterization of their structure using light microscopy and scanning/transmission electron microscopy. How the microstructural features influence scattering is investigated wave-optically within the limits of finite-difference time-domain simulations from the ultraviolet to the mid-infrared spectral range to elucidate the optical effects beyond ray optics and effective medium theory. The results show that Mie scattering plays an important role in protecting the ant from solar radiation and could be relevant for its thermal tolerance.}}, author = {{Schwind, Bertram and Wu, Xia and Tiemann, Michael and Fabritius, Helge-Otto}}, issn = {{0740-3224}}, journal = {{Journal of the Optical Society of America B}}, keywords = {{Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics}}, number = {{3}}, pages = {{B49 -- B58}}, publisher = {{Optica Publishing Group}}, title = {{{Broadband Mie scattering effects by structural features of setae from the Saharan silver ant Cataglyphis bombycina}}}, doi = {{10.1364/josab.474899}}, volume = {{40}}, year = {{2023}}, } @article{43457, abstract = {{The production of hydrogen and the utilization of biomass for sustainable concepts of energy conversion and storage require gas sensors that discriminate between hydrogen (H2) and carbon monoxide (CO). Mesoporous copper–ceria (Cu–CeO2) materials with large specific surface areas and uniform porosity are prepared by nanocasting, and their textural properties are characterized by N2 physisorption, powder XRD, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The oxidation states of copper (Cu+, Cu2+) and cerium (Ce3+, Ce4+) are investigated by XPS. The materials are used as resistive gas sensors for H2 and CO. The sensors show a stronger response to CO than to H2 and low cross-sensitivity to humidity. Copper turns out to be a necessary component; copper-free ceria materials prepared by the same method show only poor sensing performance. By measuring both gases (CO and H2) simultaneously, it is shown that this behavior can be utilized for selective sensing of CO in the presence of H2.}}, author = {{Baier, Dominik and Priamushko, Tatiana and Weinberger, Christian and Kleitz, Freddy and Tiemann, Michael}}, issn = {{2379-3694}}, journal = {{ACS Sensors}}, keywords = {{Fluid Flow and Transfer Processes, Process Chemistry and Technology, Instrumentation, Bioengineering}}, number = {{4}}, pages = {{1616 -- 1623}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors}}}, doi = {{10.1021/acssensors.2c02739}}, volume = {{8}}, year = {{2023}}, } @inproceedings{43044, abstract = {{Abstract. The combination of incremental sheet metal forming and high-speed forming offers new possibilities for flexible forming processes in the production of large sheet metal components of increased complexity with relatively low forming energies. In this paper, the general feasibility and process differences between the pulse-driven high-speed forming technologies of electrohydraulic and electromagnetic forming were investigated. An example component made of EN AW 6016 aluminum sheet metal was thus formed incrementally by both processes and the forming result evaluated by an optical 3D measurement system. For this purpose, a forming strategy for electromagnetic incremental forming (EMIF) was developed, tested and adapted to the electrohydraulic incremental forming process (EHIF). The discharge energy, the tool displacement and the pressure field of the forming zone were determined as relevant parameters for the definition of an adequate tool path strategy. It was found that the EHIF process is less affected by larger distances between the tool and the blank, while this is a critical variable for force application to the component during EMIF. On the other hand, the more uniform pressure distribution of the EMIF process is advantageous for forming large steady component areas. }}, author = {{Holzmüller, Maik and Linnemann, Maik and Homberg, Werner and Psyk, Verena and Kräusel, Verena and Kroos, Janika}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, keywords = {{Incremental Sheet Forming, Aluminium, High-Speed Forming}}, location = {{Nürnberg}}, pages = {{11--18}}, publisher = {{Materials Research Forum LLC}}, title = {{{Proof of concept for incremental sheet metal forming by means of electromagnetic and electrohydraulic high-speed forming}}}, doi = {{10.21741/9781644902417-2}}, volume = {{25}}, year = {{2023}}, } @article{43045, abstract = {{The pressure fields generated by two simultaneous discharges have not been investigated on any notable scale for the electrohydraulic impulse forming method. In this study, the synchronicity of two discharges is ensured by the sequential connection of two wires mounted in two spark gaps in a common volume of liquid. The objective is to experimentally confirm the equilibrium of the energies evolved in two spark gaps by means of pressure measurements. In addition, multipoint membrane pressure gauges demonstrated the feasibility of easily recording detailed pressure maps. Based on the membrane deformation mechanism and material strengthening under static and impulse conditions, the processing procedure is further developed so as to achieve better accuracy in the determination of pressure field parameters. The practical equality of the pressure fields on the left and right halves of the flat-loaded area confirms the equality of energies evolved in the two spark gaps. The direct shock waves create zones with the most intensive loading. These results provide a basis for the development of new electrohydraulic technologies involving the application of two simultaneous discharges with equal energy and pressure parameters.}}, author = {{Knyazyev, Mykhaylo and Holzmüller, Maik and Homberg, Werner}}, issn = {{2504-4494}}, journal = {{Journal of Manufacturing and Materials Processing}}, keywords = {{impulse, forming, electrohydraulic, discharge, wire, pressure gauge, pressure field}}, number = {{1}}, publisher = {{MDPI AG}}, title = {{{Investigation of Pressure Fields Generated by Two Simultaneous Discharges in Liquid Initiated by Wires}}}, doi = {{10.3390/jmmp7010040}}, volume = {{7}}, year = {{2023}}, } @article{44321, author = {{Neumann, Phillip}}, issn = {{0513-9066}}, journal = {{Zeitschrift für Heilpädagogik}}, keywords = {{Inklusion, Sonderpädagogik, Bildung, Bildungsstudien, Integration}}, number = {{5}}, pages = {{230--232}}, title = {{{Studien zu Schulleistungen und ihre Aufbereitung}}}, volume = {{74}}, year = {{2023}}, } @inproceedings{44320, author = {{Hami Dindar, Iman and Lutters, Nicole and Kenig, Eugeny}}, booktitle = {{Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik und Adsoprtion}}, location = {{Frankfurt am Main}}, title = {{{Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung }}}, year = {{2023}}, } @inproceedings{34171, abstract = {{State estimation when only a partial model of a considered system is available remains a major challenge in many engineering fields. This work proposes a joint, square-root unscented Kalman filter to estimate states and model uncertainties simultaneously by linear combinations of physics-motivated library functions. Using a sparsity promoting approach, a selection of those linear combinations is chosen and thus an interpretable model can be extracted. Results indicate a small estimation error compared to a traditional square-root unscented Kalman filter and exhibit the enhancement of physically meaningful models.}}, author = {{Götte, Ricarda-Samantha and Timmermann, Julia}}, booktitle = {{12th IFAC Symposium on Nonlinear Control Systems (NOLCOS 2022)}}, keywords = {{joint estimation, unscented transform, Kalman filter, sparsity, data-driven, compressed sensing}}, location = {{Canberra, Australien}}, number = {{1}}, pages = {{85--90}}, title = {{{Estimating States and Model Uncertainties Jointly by a Sparsity Promoting UKF}}}, doi = {{https://doi.org/10.1016/j.ifacol.2023.02.015}}, volume = {{56}}, year = {{2023}}, } @article{40981, abstract = {{Room temperature sodium-sulfur (RT Na-S) batteries are considered potential candidates for stationary power storage applications due to their low cost, broad active material availability and low toxicity. Challenges, such as high volume expansion of the S-cathode upon discharge, low electronic conductivity of S as active material and herewith limited rate capability as well as the shuttling of polysulfides (PSs) as intermediates often impede the cycle stability and practical application of Na-S batteries. Sulfurized poly(acrylonitrile) (SPAN) inherently inhibits the shuttling of PSs and shows compatibility with carbonate-based electrolytes, however, its exact redox mechanism remained unclear to date. Herein, we implement a commercially available and simple electrolyte into the Na-SPAN cell chemistry and demonstrate its high rate and cycle stability. Through the application of in situ techniques utilizing electronic impedance spectroscopy (EIS) and X-ray absorption spectroscopy (XAS) at different depths of charge and discharge, an insight into SPAN’s redox chemistry is obtained.}}, author = {{Kappler, Julian and Tonbul, Güldeniz and Schoch, Roland and Murugan, Saravanakumar and Nowakowski, Michał and Lange, Pia Lena and Klostermann, Sina Vanessa and Bauer, Matthias and Schleid, Thomas and Kästner, Johannes and Buchmeiser, Michael Rudolf}}, issn = {{0013-4651}}, journal = {{Journal of The Electrochemical Society}}, keywords = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}}, number = {{1}}, publisher = {{The Electrochemical Society}}, title = {{{Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile) as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries}}}, doi = {{10.1149/1945-7111/acb2fa}}, volume = {{170}}, year = {{2023}}, } @article{44382, abstract = {{The success of engineering complex technical systems is determined by meeting customer requirements and institutional regulations. One example relevant to the automobile industry is the United Nations Economic Commission of Europe (UN ECE), which specifies the homologation of automobile series and requires proof of traceability. The required traceability can be achieved by modeling system artifacts and their relations in a consistent, seamless model—an effect-chain model. Currently, no in-depth methodology exists to support engineers in developing certification-compliant effect-chain models. For this purpose, a new methodology for certification-compliant effect-chain modeling was developed, which includes extensions of an existing method, suitable models, and tools to support engineers in the modeling process. For evaluation purposes, applicability is proven based on the experience of more than 300 workshops at an automotive OEM and an automotive supplier. The following case example is chosen to demonstrate applicability: the development of a window lifter that has to meet the demands of UN ECE Regulations R156 and R21. Results indicate multiple benefits in supporting engineers with the certification-compliant modeling of effect chains. Three benefits are goal-oriented modeling to reduce the necessary modeling capacity, increasing model quality by applying information quality criteria, and the potential to reduce costs through automatable effect-chain analyses for technical changes. Further, companies in the automotive and other industries will benefit from increased modeling capabilities that can be used for architecture modeling and to comply with other regulations such as ASPICE or ISO 26262.}}, author = {{Gräßler, Iris and Wiechel, Dominik and Koch, Anna-Sophie and Sturm, Tim and Markfelder, Thomas}}, issn = {{2079-8954}}, journal = {{Systems}}, keywords = {{Information Systems and Management, Computer Networks and Communications, Modeling and Simulation, Control and Systems Engineering, Software}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{Methodology for Certification-Compliant Effect-Chain Modeling}}}, doi = {{10.3390/systems11030154}}, volume = {{11}}, year = {{2023}}, } @inproceedings{44380, author = {{Tonbul, Güldeniz and Kappler, Julian and Murugan, Saravanakumar and Schoch, Roland and Nowakowski, Michal and Lange, Pia and Bauer, Matthias and Buchmeiser, Michael R.}}, location = {{Aachen}}, title = {{{Characterization of Na-S Battery System Using X-ray Absorption Spectroscopy}}}, year = {{2023}}, } @inproceedings{44390, abstract = {{The development of autonomous vehicles and their introduction in urban traffic offer many opportunities for traffic improvements. In this paper, an approach for a future traffic control system for mixed autonomy traffic environments is presented. Furthermore, a simulation framework based on the city of Paderborn is introduced to enable the development and examination of such a system. This encompasses multiple elements including the road network itself, traffic lights, sensors as well as methods to analyse the topology of the network. Furthermore, a procedure for traffic demand generation and routing is presented based on statistical data of the city and traffic data obtained by measurements. The resulting model can receive and apply the generated control inputs and in turn generates simulated sensor data for the control system based on the current system state.}}, author = {{Link, Christopher and Malena, Kevin and Gausemeier, Sandra and Trächtler, Ansgar}}, booktitle = {{Proceedings of the 9th International Conference on Vehicle Technology and Intelligent Transport Systems}}, isbn = {{978-989-758-652-1}}, keywords = {{Traffic Simulation, Traffic Control, Car2X, Mixed Autonomy, Autonomous Vehicles, SUMO, Sensor Simulation, Traffic Demand Generation, Routing, Traffic Lights, Graph Analysis, Traffic Observer}}, location = {{Prague, Czech Republic}}, publisher = {{SCITEPRESS - Science and Technology Publications}}, title = {{{Simulation Environment for Traffic Control Systems Targeting Mixed Autonomy Traffic Scenarios}}}, doi = {{10.5220/0011987600003479}}, year = {{2023}}, } @inproceedings{44444, author = {{Althaus, Maike and Müller, Michelle and Vorbohle, Christian and Kundisch, Dennis}}, booktitle = {{Proceedings of the International Conference on Challenges in Managing Smart Products and Services (CHIMSPAS 2023)}}, location = {{Bielefeld}}, title = {{{Business Models for Cultural Event Platforms – A Taxonomy Approach}}}, year = {{2023}}, } @inproceedings{44053, author = {{Laux, Florian and Poniatowski, Martin and Kundisch, Dennis}}, booktitle = {{Proceedings of the 31st European Conference on Information Systems (ECIS)}}, location = {{Kristiansand, Norway}}, title = {{{May I have your Attention, please? – The Interaction between Attention Screening and Reputation on Crowdworking Platforms}}}, year = {{2023}}, } @inproceedings{44103, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Berlin}}, title = {{{Particles as Seeds for Instabilities in Uniaxially Elongated Polymer Suspension Filaments (Presentation)}}}, year = {{2023}}, } @article{44477, author = {{Küster, Christine and Klünder, Nina and Wagenknecht, Inga}}, issn = {{2626-0913}}, journal = {{Hauswirtschaft und Wissenschaft}}, pages = {{1--12}}, publisher = {{Deutsche Gesellschaft für Hauswirtschaft e.V.}}, title = {{{Haushaltswissenschaft – Eine Diskussionsgrundlage}}}, doi = {{ 10.23782/HUW_09_2023}}, volume = {{71}}, year = {{2023}}, } @inbook{35063, author = {{Meine, Sabine and Otto, Arnold and Süßmann, Johannes}}, booktitle = {{Musiklandschaften zwischen Rhein und Weser. Pluralisierung und Verflechtung entlang des Hellwegs in der Frühen Neuzeit. Unter Mitarbeit v. Markus Lauert}}, isbn = {{978-3-8260-7218-5}}, pages = {{7–42}}, publisher = {{Königshausen & Neumann}}, title = {{{Musiklandschaften zwischen Rhein und Weser – Einführung}}}, doi = {{https://doi.org/10.36202/9783826077920}}, year = {{2023}}, } @inproceedings{20841, author = {{Gharibian, Sevag and Watson, James and Bausch, Johannes}}, booktitle = {{Proceedings of the 40th International Symposium on Theoretical Aspects of Computer Science (STACS)}}, pages = {{54:1--54:21}}, title = {{{The Complexity of Translationally Invariant Problems beyond Ground State Energies}}}, doi = {{https://doi.org/10.4230/LIPIcs.STACS.2023.54}}, volume = {{254}}, year = {{2023}}, } @unpublished{44501, abstract = {{Extending the notion of maxcut, the study of the frustration index of signed graphs is one of the basic questions in the theory of signed graphs. Recently two of the authors initiated the study of critically frustrated signed graphs. That is a signed graph whose frustration index decreases with the removal of any edge. The main focus of this study is on critical signed graphs which are not edge-disjoint unions of critically frustrated signed graphs (namely non-decomposable signed graphs) and which are not built from other critically frustrated signed graphs by subdivision. We conjecture that for any given k there are only finitely many critically k-frustrated signed graphs of this kind. Providing support for this conjecture we show that there are only two of such critically 3-frustrated signed graphs where there is no pair of edge-disjoint negative cycles. Similarly, we show that there are exactly ten critically 3-frustrated signed planar graphs that are neither decomposable nor subdivisions of other critically frustrated signed graphs. We present a method for building non-decomposable critically frustrated signed graphs based on two given such signed graphs. We also show that the condition of being non-decomposable is necessary for our conjecture. }}, author = {{Cappello, Chiara and Naserasr, Reza and Steffen, Eckhard and Wang, Zhouningxin}}, booktitle = {{arXiv:2304.10243}}, title = {{{Critically 3-frustrated signed graphs}}}, year = {{2023}}, } @article{42517, author = {{Tapio, Kosti and Kielar, Charlotte and Parikka, Johannes M. and Keller, Adrian and Järvinen, Heini and Fahmy, Karim and Toppari, J. Jussi}}, issn = {{0897-4756}}, journal = {{Chemistry of Materials}}, keywords = {{Materials Chemistry, General Chemical Engineering, General Chemistry}}, pages = {{1961–1971}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Large-Scale Formation of DNA Origami Lattices on Silicon}}}, doi = {{10.1021/acs.chemmater.2c03190}}, volume = {{35}}, year = {{2023}}, } @article{42518, author = {{Pothineni, Bhanu Kiran and Keller, Adrian}}, issn = {{2699-9307}}, journal = {{Advanced NanoBiomed Research}}, keywords = {{General Medicine}}, publisher = {{Wiley}}, title = {{{Nanoparticle‐Based Formulations of Glycopeptide Antibiotics: A Means for Overcoming Vancomycin Resistance in Bacterial Pathogens?}}}, doi = {{10.1002/anbr.202200134}}, volume = {{3}}, year = {{2023}}, } @article{44503, author = {{Hanke, Marcel and Tomm, Emilia and Grundmeier, Guido and Keller, Adrian}}, issn = {{1439-4227}}, journal = {{ChemBioChem}}, keywords = {{Organic Chemistry, Molecular Biology, Molecular Medicine, Biochemistry}}, publisher = {{Wiley}}, title = {{{Effect of Ionic Strength on the Thermal Stability of DNA Origami Nanostructures}}}, doi = {{10.1002/cbic.202300338}}, year = {{2023}}, } @article{44504, author = {{Linko, Veikko and Keller, Adrian}}, issn = {{1613-6810}}, journal = {{Small}}, keywords = {{Biomaterials, Biotechnology, General Materials Science, General Chemistry}}, publisher = {{Wiley}}, title = {{{Stability of DNA Origami Nanostructures in Physiological Media: The Role of Molecular Interactions}}}, doi = {{10.1002/smll.202301935}}, year = {{2023}}, } @phdthesis{44509, author = {{Kruse, Anne}}, isbn = {{978-3-8440-8955-4}}, pages = {{145}}, title = {{{Entwicklung einer Methode zur Integration der Additiven Fertigung in die Serienproduktion am Beispiel des Lasersinterns}}}, volume = {{27}}, year = {{2023}}, } @unpublished{44512, abstract = {{For open world applications, deep neural networks (DNNs) need to be aware of previously unseen data and adaptable to evolving environments. Furthermore, it is desirable to detect and learn novel classes which are not included in the DNNs underlying set of semantic classes in an unsupervised fashion. The method proposed in this article builds upon anomaly detection to retrieve out-of-distribution (OoD) data as candidates for new classes. We thereafter extend the DNN by $k$ empty classes and fine-tune it on the OoD data samples. To this end, we introduce two loss functions, which 1) entice the DNN to assign OoD samples to the empty classes and 2) to minimize the inner-class feature distances between them. Thus, instead of ground truth which contains labels for the different novel classes, the DNN obtains a single OoD label together with a distance matrix, which is computed in advance. We perform several experiments for image classification and semantic segmentation, which demonstrate that a DNN can extend its own semantic space by multiple classes without having access to ground truth.}}, author = {{Uhlemeyer, Svenja and Lienen, Julian and Hüllermeier, Eyke and Gottschalk, Hanno}}, booktitle = {{arXiv:2305.00983}}, title = {{{Detecting Novelties with Empty Classes}}}, year = {{2023}}, } @inproceedings{44521, author = {{Wurst, Johanna and Steinhoff, Timon and Mozgova, Iryna and Hassel, Thomas and Lachmayer, Roland}}, title = {{{Aspects of a Sustainability Focused Comparison of the Wire Arc Additive Manufacturing (WAAM) and the Laser Powder Bed Fusion (LPBF) Process}}}, doi = {{10.1007/978-981-19-9205-6_9}}, year = {{2023}}, } @inproceedings{44522, author = {{Wurst, Johanna and Rosemann, Daniel and Mozgova, Iryna and Lachmayer, Roland}}, title = {{{Concept and Implementation of a Student Design Project for the Development of Sustainable Products}}}, doi = {{10.1007/978-3-031-28839-5_88}}, year = {{2023}}, } @article{44523, author = {{Paradies, Jan}}, issn = {{0001-4842}}, journal = {{Accounts of Chemical Research}}, keywords = {{General Medicine, General Chemistry}}, number = {{7}}, pages = {{821--834}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Structure–Reactivity Relationships in Borane-Based FLP-Catalyzed Hydrogenations, Dehydrogenations, and Cycloisomerizations}}}, doi = {{10.1021/acs.accounts.2c00832}}, volume = {{56}}, year = {{2023}}, } @book{44524, editor = {{Meier-Gräwe, Uta and Praetorius, Ina and Tecklenburg, Feline}}, isbn = {{9783847425922}}, pages = {{307}}, publisher = {{Verlag Barbara Budrich}}, title = {{{Wirtschaft neu ausrichten. Care-Initiativen in Deutschland, Österreich und der Schweiz.}}}, year = {{2023}}, } @article{44545, abstract = {{IntroductionExergames are increasingly used in rehabilitation settings for older adults to train physical and cognitive abilities. To meet the potential that exergames hold, they need to be adapted to the individual abilities of the player and their training objectives. Therefore, it is important to know whether and how game characteristics affect their playing. The aim of this study is to investigate the effect of two different kinds of exergame (step game and balance game) played at two difficulty levels on brain activity and physical activity.MethodsTwenty-eight older independently living adults played two different exergames at two difficulty levels each. In addition, the same movements as during gaming (leaning sideways with feet in place and stepping sideways) were performed as reference movements. Brain activity was recorded using a 64-channel EEG system to assess brain activity, while physical activity was recorded using an accelerometer at the lower back and a heart rate sensor. Source-space analysis was applied to analyze the power spectral density in theta (4 Hz–7 Hz) and alpha-2 (10 Hz–12 Hz) frequency bands. Vector magnitude was applied to the acceleration data.ResultsFriedman ANOVA revealed significantly higher theta power for the exergaming conditions compared to the reference movement for both games. Alpha-2 power showed a more diverse pattern which might be attributed to task-specific conditions. Acceleration decreased significantly from the reference movement to the easy condition to the hard condition for both games.DiscussionThe results indicate that exergaming increases frontal theta activity irrespective of type of game or difficulty level, while physical activity decreases with increasing difficulty level. Heart rate was found to be an inappropriate measure in this population older adults. These findings contribute to understanding of how game characteristics affect physical and cognitive activity and consequently need to be taken into account when choosing appropriate games and game settings for exergame interventions.}}, author = {{Müller, Helen and Baumeister, Jochen and Bardal, Ellen Marie and Vereijken, Beatrix and Skjæret-Maroni, Nina}}, issn = {{1663-4365}}, journal = {{Frontiers in Aging Neuroscience}}, keywords = {{Cognitive Neuroscience, Aging}}, publisher = {{Frontiers Media SA}}, title = {{{Exergaming in older adults: the effects of game characteristics on brain activity and physical activity}}}, doi = {{10.3389/fnagi.2023.1143859}}, volume = {{15}}, year = {{2023}}, } @inbook{43170, author = {{Labusch, Amelie and Eickelmann, Birgit}}, booktitle = {{Teaching coding in K-12 schools: Research and application}}, editor = {{Keane, T. and Fluck, A. E.}}, isbn = {{9783031219696}}, pages = {{319--329}}, publisher = {{Springer International Publishing}}, title = {{{Learning Computational Thinking in Secondary School (Year 8) in Germany in International Comparison: Results from ICILS 2018}}}, doi = {{10.1007/978-3-031-21970-2_21}}, year = {{2023}}, } @inbook{44626, author = {{Schulze, Johanna and Drossel, Kerstin and Eickelmann, Birgit}}, booktitle = {{Professionalisierung für digitale Bildung im Grundschulalter - Ergebnisse des Forschungsprojekts P3DiG }}, editor = {{Irion, T. and Böttinger, T. and Kammerl, R.}}, pages = {{15--30}}, publisher = {{Waxmann Verlag}}, title = {{{Die inhaltliche Ausgestaltung schulischer Medienkonzepte als Gelingensbedingung digitalisierungsbezogener Schulentwicklungsprozesse}}}, doi = {{DOI:10.31244/9783830996415}}, year = {{2023}}, } @techreport{44627, author = {{Gerick, J. and Eickelmann, Birgit and Panten, B. and Rothärmel, A. and Rau, M. and Gottschalk, T.}}, publisher = {{Technische Universität Braunschweig/Universität Paderborn}}, title = {{{Abschlussbericht zum Forschungsprojekt ‚Gelingensbedingungen und Transfer von erfolgreichen Digitalisierungsprozessen an Schulen in Nordrhein-Westfalen (GuTe DigiSchulen NRW)}}}, year = {{2023}}, } @techreport{44628, author = {{Gerick, J. and Eickelmann, Birgit and Rau, M. and Panten, B. and Rothärmel, A. and Gottschalk, T.}}, publisher = {{Technische Universität Braunschweig}}, title = {{{Digitalisierungsbezogene Schulentwicklungsprozesse erfolgreich gestalten. Handreichung für die schulische Arbeit zu den Ergebnissen des Forschungsprojekts GuTe DigiSchulen NRW.}}}, year = {{2023}}, } @article{35536, author = {{Kowatz, Jannik and Teutenberg, Dominik and Meschut, Gerson}}, issn = {{0143-7496}}, journal = {{International Journal of Adhesion and Adhesives}}, publisher = {{Elsevier}}, title = {{{Optimization of inductive fast-curing of epoxy adhesive by model-based kinetics}}}, doi = {{https://doi.org/10.1016/j.ijadhadh.2023.103392}}, volume = {{124}}, year = {{2023}}, } @inproceedings{44228, author = {{Salten, Alexander Heinrich Johannes and Al Trjman, Mohamad and Meschut, Gerson and Kenig, Eugeny Y.}}, location = {{Paderborn}}, title = {{{Simulation des „viscous fingering“ Effektes in Klebverbindungen}}}, year = {{2023}}, } @inproceedings{44227, author = {{Al Trjman, Mohamad and Meschut, Gerson and Salten, Alexander Heinrich Johannes and Kenig, Eugeny Y.}}, location = {{Frankfurt am Main}}, title = {{{Methodenentwicklung zur Simulation des Viscous Fingering in Klebverbindungen von stahlintensiven Mischbaustrukturen}}}, year = {{2023}}, } @article{44672, abstract = {{With enhancing digitalization, condition monitoring is used in an increasing number of application fields across various industrial sectors. By its application, increased reliability as well as reduced risks and costs can be achieved. Based on different approaches, technical systems are monitored and measured data is analyzed to enable condition-based or predictive maintenance. To this end, machine learning approaches are usually implemented to diagnose the health states or predict the health index of the monitored system. However, these trained models are often black-box models, not intuitively explainable for a human. To overcome this shortcoming, a model-based approach based on physics is developed for piezoelectric bending actuators. Such a model enables a transparent representation of the system. Moreover, the model-based approach is extended by a parameter-estimation to account for sudden changes in behavior e. g. caused by occurring cracks.}}, author = {{Bender, Amelie}}, issn = {{0924-4247}}, journal = {{Sensors and Actuators A: Physical}}, keywords = {{Condition Monitoring, Model-based approach Diagnostics, Varying conditions, Explainability, Piezoelectric bending actuators}}, publisher = {{Elsevier BV}}, title = {{{Model-based condition monitoring of piezoelectric bending actuators}}}, doi = {{10.1016/j.sna.2023.114399}}, volume = {{357}}, year = {{2023}}, } @article{44687, abstract = {{Entwicklungsprojekte stehen in einem Spannungsfeld von Volatilität, Unsicherheit, Komplexität und Ambiguität (VUCA). Resilient Requirements Engineering (RRE) ist ein vielversprechender Ansatz, diesen Rahmenbedingungen gerecht zu werden und erfolgreich zu entwickeln. Es werden Methoden aus den drei Innovationsfeldern des RRE – Vorausschau, Effizienz und Nachhaltigkeit – angewendet, um Effizienzpotenziale in der Produktentwicklung zu nutzen und frühzeitig Nachhaltigkeitsdimensionen in der Ermittlung von Stakeholderbedürfnissen zu verankern.}}, author = {{Gräßler, Iris and Oleff, Christian and Preuß, Daniel and Koch, Anna-Sophie}}, issn = {{2511-0896}}, journal = {{Zeitschrift für wirtschaftlichen Fabrikbetrieb}}, keywords = {{Management Science and Operations Research, Strategy and Management, General Engineering}}, number = {{4}}, pages = {{222--225}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Resilient Requirements Engineering}}}, doi = {{10.1515/zwf-2023-1030}}, volume = {{118}}, year = {{2023}}, } @inproceedings{44194, author = {{Ahmed, Qazi Arbab and Awais, Muhammad and Platzner, Marco}}, booktitle = {{The 24th International Symposium on Quality Electronic Design (ISQED'23), San Francisco, Califorina USA}}, location = {{San Fransico CA 94023-0607, USA}}, title = {{{MAAS: Hiding Trojans in Approximate Circuits}}}, year = {{2023}}, } @misc{44735, author = {{Schweichhart, Jonas}}, title = {{{Minimum Edge Cuts in Overlay Networks}}}, year = {{2023}}, } @inbook{44769, author = {{Castenow, Jannik and Harbig, Jonas and Meyer auf der Heide, Friedhelm}}, booktitle = {{Lecture Notes in Computer Science}}, isbn = {{9783031304477}}, issn = {{0302-9743}}, publisher = {{Springer International Publishing}}, title = {{{Unifying Gathering Protocols for Swarms of Mobile Robots}}}, doi = {{10.1007/978-3-031-30448-4_1}}, year = {{2023}}, } @misc{44101, author = {{Temborius, Fiona and Neukötter, Moritz}}, title = {{{Polymere unter Dehnung: Untersuchung der Filamententstehung von Polymerblends und deren Instabilitätsentstehung durch Partikeln}}}, year = {{2023}}, } @misc{42997, author = {{Almohammad, Ahmad and Neukötter, Moritz}}, title = {{{Untersuchung dehnrheologischer Eigenschaften - Suspensionen auf Basis von Polymerlösungen }}}, year = {{2023}}, } @article{44044, abstract = {{Dispersion is present in every optical setup and is often an undesired effect, especially in nonlinear-optical experiments where ultrashort laser pulses are needed. Typically, bulky pulse compressors consisting of gratings or prisms are used to address this issue by precompensating the dispersion of the optical components. However, these devices are only able to compensate for a part of the dispersion (second-order dispersion). Here, we present a compact pulse-shaping device that uses plasmonic metasurfaces to apply an arbitrarily designed spectral phase delay allowing for a full dispersion control. Furthermore, with specific phase encodings, this device can be used to temporally reshape the incident laser pulses into more complex pulse forms such as a double pulse. We verify the performance of our device by using an SHG-FROG measurement setup together with a retrieval algorithm to extract the dispersion that our device applies to an incident laser pulse.}}, author = {{Geromel, René and Georgi, Philip and Protte, Maximilian and Lei, Shiwei and Bartley, Tim and Huang, Lingling and Zentgraf, Thomas}}, issn = {{1530-6984}}, journal = {{Nano Letters}}, keywords = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}}, number = {{8}}, pages = {{3196 -- 3201}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Compact Metasurface-Based Optical Pulse-Shaping Device}}}, doi = {{10.1021/acs.nanolett.2c04980}}, volume = {{23}}, year = {{2023}}, } @article{44837, abstract = {{Hydrothermal carbonization (HTC) is an efficient thermochemical method for the conversion of organic feedstock to carbonaceous solids. HTC of different saccharides is known to produce microspheres (MS) with mostly Gaussian size distribution, which are utilized as functional materials in various applications, both as pristine MS and as a precursor for hard carbon MS. Although the average size of the MS can be influenced by adjusting the process parameters, there is no reliable mechanism to affect their size distribution. Our results demonstrate that HTC of trehalose, in contrast to other saccharides, results in a distinctly bimodal sphere diameter distribution consisting of small spheres with diameters of (2.1 ± 0.2) μm and of large spheres with diameters of (10.4 ± 2.6) μm. Remarkably, after pyrolytic post-carbonization at 1000 °C the MS develop a multimodal pore size distribution with abundant macropores > 100 nm, mesopores > 10 nm and micropores < 2 nm, which were examined by small-angle X-ray scattering and visualized by charge-compensated helium ion microscopy. The bimodal size distribution and hierarchical porosity provide an extraordinary set of properties and potential variables for the tailored synthesis of hierarchical porous carbons, making trehalose-derived hard carbon MS a highly promising material for applications in catalysis, filtration, and energy storage devices.}}, author = {{Wortmann, Martin and Keil, Waldemar and Diestelhorst, Elise and Westphal, Michael and Haverkamp, René and Brockhagen, Bennet and Biedinger, Jan and Bondzio, Laila and Weinberger, Christian and Baier, Dominik and Tiemann, Michael and Hütten, Andreas and Hellweg, Thomas and Reiss, Günter and Schmidt, Claudia and Sattler, Klaus and Frese, Natalie}}, issn = {{2046-2069}}, journal = {{RSC Advances}}, keywords = {{General Chemical Engineering, General Chemistry}}, number = {{21}}, pages = {{14181--14189}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose}}}, doi = {{10.1039/d3ra01301d}}, volume = {{13}}, year = {{2023}}, } @misc{42999, author = {{Bünder, Dirk and Neukötter, Moritz}}, title = {{{Theoretische Beschreibung des Polymerverhaltens in Polymerlösungen und - schmelzen: Simulationen anhand des Rolie-Poly-Modells}}}, year = {{2023}}, } @misc{42995, author = {{Al Mamoun, Mohamed and Neukötter, Moritz}}, title = {{{Evaluation of self-built low-budget particle sensors (Study Project)}}}, year = {{2023}}, } @book{44246, author = {{Teichert, Jeannine}}, publisher = {{Springer VS}}, title = {{{Digital occupants – Wie digitale Medien die kommunikative Aushandlung von Freundschaften verändern}}}, year = {{2023}}, } @article{44247, author = {{Teichert, Jeannine and Meister, Dorothee M.}}, journal = {{MedienPädagogik}}, title = {{{Mediale Identitätsaushandlungen deutscher MigrantInnen im Zuge des Brexit}}}, year = {{2023}}, } @inbook{42183, author = {{Kruse, Iris and Maubach, Bernd and Tönsing, Johanna}}, booktitle = {{Salah Naoura}}, editor = {{Kruse, Iris and Josting, Petra}}, isbn = {{978-3-96848-094-7}}, pages = {{249--262}}, publisher = {{kopaed}}, title = {{{"Lesungen vor Kindern sind für mich Theater" / Salah Naouras Sicht auf Wirkliches und Mögliches in Autor*innenlesungen für Kinder in der Schule}}}, volume = {{12}}, year = {{2023}}, } @inbook{42182, author = {{Kruse, Iris and Schäfer, Luisa Maria}}, booktitle = {{Salah Naoura}}, editor = {{Kruse, Iris and Josting, Petra}}, isbn = {{978-3-96848-094-7}}, pages = {{235--248}}, publisher = {{kopaed}}, title = {{{Held*innenträume. Superheldinnen und Superhelden selbst erdacht / Paderborner Grundschulkinder werden auf die Begegnung mit Salah Naoura vorbereitet}}}, volume = {{12}}, year = {{2023}}, } @book{42178, editor = {{Kruse, Iris and Josting, Petra}}, isbn = {{978-3-96848-094-7}}, pages = {{279}}, publisher = {{kopaed}}, title = {{{Salah Naoura}}}, volume = {{12}}, year = {{2023}}, } @article{44857, abstract = {{Ancestral reconstruction is a classic task in comparative genomics. Here, we study the genome median problem, a related computational problem which, given a set of three or more genomes, asks to find a new genome that minimizes the sum of pairwise distances between it and the given genomes. The distance stands for the amount of evolution observed at the genome level, for which we determine the minimum number of rearrangement operations necessary to transform one genome into the other. For almost all rearrangement operations the median problem is NP-hard, with the exception of the breakpoint median that can be constructed efficiently for multichromosomal circular and mixed genomes. In this work, we study the median problem under a restricted rearrangement measure called c4-distance, which is closely related to the breakpoint and the DCJ distance. We identify tight bounds and decomposers of the c4-median and develop algorithms for its construction, one exact ILP-based and three combinatorial heuristics. Subsequently, we perform experiments on simulated data sets. Our results suggest that the c4-distance is useful for the study the genome median problem, from theoretical and practical perspectives.}}, author = {{Silva, Helmuth O.M. and Rubert, Diego P. and Araujo, Eloi and Steffen, Eckhard and Doerr, Daniel and Martinez, Fábio V.}}, issn = {{0399-0559}}, journal = {{RAIRO - Operations Research}}, keywords = {{Management Science and Operations Research, Computer Science Applications, Theoretical Computer Science}}, number = {{3}}, pages = {{1045--1058}}, publisher = {{EDP Sciences}}, title = {{{Algorithms for the genome median under a restricted measure of rearrangement}}}, doi = {{10.1051/ro/2023052}}, volume = {{57}}, year = {{2023}}, } @unpublished{44859, author = {{Ma, Yulai and Mattiolo, Davide and Steffen, Eckhard and Wolf, Isaak Hieronymus}}, booktitle = {{arXiv:2305.08619}}, title = {{{Sets of r-graphs that color all r-graphs}}}, year = {{2023}}, } @article{44888, author = {{Lenz, Peter and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}}, number = {{1}}, publisher = {{Wiley}}, title = {{{Thermo‐chemo‐mechanical modelling of a curing process combined with mean‐field homogenization methods at large strains}}}, doi = {{10.1002/pamm.202200214}}, volume = {{22}}, year = {{2023}}, } @inproceedings{34294, author = {{Wolters, Dennis and Engels, Gregor}}, booktitle = {{MODELSWARD'23}}, isbn = {{978-989-758-633-0}}, issn = {{2184-4348}}, pages = {{133--142}}, publisher = {{SCITEPRESS}}, title = {{{Model-driven Collaborative Design of Professional Education Programmes With Extended Online Whiteboards}}}, doi = {{10.5220/0011675700003402}}, year = {{2023}}, } @unpublished{44887, author = {{Cheng, Chun and Song, Chunlei and Mahnken, Rolf and Yuan, Zhipeng and Yu, Liang and Ju, Xiaozhe}}, publisher = {{Elsevier BV}}, title = {{{A Non-Linear Mean-Field Debonding Model at Large Strains for the Analysis of Fibre Kinking in Ud Composites}}}, year = {{2023}}, } @article{44891, author = {{Westermann, Hendrik and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}}, number = {{1}}, publisher = {{Wiley}}, title = {{{A thermodynamic framework for the phase‐field approach considering carbide precipitation during phase transformations}}}, doi = {{10.1002/pamm.202200080}}, volume = {{22}}, year = {{2023}}, } @article{44892, author = {{Hamdoun, Ayoub and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}}, number = {{1}}, publisher = {{Wiley}}, title = {{{A finite strain gradient theory for viscoplasticity by means of micromorphic regularization}}}, doi = {{10.1002/pamm.202200074}}, volume = {{22}}, year = {{2023}}, } @article{44897, author = {{Kaimann, Daniel and Spiess Bru, Clarissa Laura Maria and Frick, Bernd}}, journal = {{Journal of Wine Economics}}, title = {{{Ratings Meet Prices: The Dynamic Relationship of Quality Signals}}}, year = {{2023}}, } @inproceedings{44502, abstract = {{In order to follow the 1.5 degree path of the Paris Climate Agreement, drastic greenhouse gas reduction measures are needed in the transport sector. The potential of public transport and new mobility services to reduce transport-related greenhouse gas emissions cannot yet be fully exploited, especially in rural regions. This paper presents the concept of an innovative mobility system, called NeMo.bil, that intends to fill the gap between individual and public transport to create a demand-oriented and sustainable mobility offer. The concept is based on convoy formation of autonomously driving lightweight vehicles serving the first and last mile and a larger towing vehicle carrying enough power and energy to move the convoy over longer distances at higher speeds. This combination of two different vehicles, intelligently controlled by a digital ecosystem, aims to significantly increasing energy, resource and cost efficiency. Based on an analysis of previous approaches for innovative mobility solutions, the concept is derived from a technical and sociological perspective and its potential for reducing energy demand is calculated.}}, author = {{Ostermann, Moritz and Behm, Jonathan and Marten, Thorsten and Tröster, Thomas and Weyer, Johannes and Cepera, Kay and Adelt, Fabian}}, booktitle = {{Towards the New Normal in Mobility}}, editor = {{Proff, Heike}}, isbn = {{9783658394370}}, location = {{Duisburg}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Individualization of Public Transport – Integration of Technical and Social Dimensions of Sustainable Mobility}}}, doi = {{10.1007/978-3-658-39438-7_25}}, year = {{2023}}, } @article{45013, author = {{Codescu, M.-A. and Kunze, T. and Weiß, M. and Brehm, Martin and Kornilov, O. and Sebastiani, D. and Nibbering, E. T. J.}}, journal = {{J. Phys. Chem. Lett.}}, pages = {{4775--4785}}, title = {{{Ultrafast Proton Transfer Pathways Mediated by Amphoteric Imidazole}}}, doi = {{10.1021/acs.jpclett.3c00595}}, volume = {{14}}, year = {{2023}}, } @article{45012, author = {{Roos, E. and Sebastiani, D. and Brehm, Martin}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{8755--8766}}, title = {{{A Force Field for Bio-Polymers in Ionic Liquids (BILFF) – Part 2: Cellulose in [EMIm][OAc] / Water Mixtures}}}, doi = {{10.1039/D2CP05636D}}, volume = {{25 (12)}}, year = {{2023}}, } @article{45011, author = {{Radicke, J. and Roos, E. and Sebastiani, D. and Brehm, Martin and Kressler, J.}}, journal = {{J. Polym. Sci.}}, pages = {{372--384}}, title = {{{Lactate-Based Ionic Liquids as Chiral Solvents for Cellulose}}}, doi = {{10.1002/pol.20220687}}, volume = {{61 (5)}}, year = {{2023}}, } @article{45134, abstract = {{The aim of the present study was to investigate if the presence of anterior cruciate ligament (ACL) injury risk factors depicted in the laboratory would reflect at-risk patterns in football-specific field data. Twenty-four female footballers (14.9 ± 0.9 year) performed unanticipated cutting maneuvers in a laboratory setting and on the football pitch during football-specific exercises (F-EX) and games (F-GAME). Knee joint moments were collected in the laboratory and grouped using hierarchical agglomerative clustering. The clusters were used to investigate the kinematics collected on field through wearable sensors. Three clusters emerged: Cluster 1 presented the lowest knee moments; Cluster 2 presented high knee extension but low knee abduction and rotation moments; Cluster 3 presented the highest knee abduction, extension, and external rotation moments. In F-EX, greater knee abduction angles were found in Cluster 2 and 3 compared to Cluster 1 (p = 0.007). Cluster 2 showed the lowest knee and hip flexion angles (p < 0.013). Cluster 3 showed the greatest hip external rotation angles (p = 0.006). In F-GAME, Cluster 3 presented the greatest knee external rotation and lowest knee flexion angles (p = 0.003). Clinically relevant differences towards ACL injury identified in the laboratory reflected at-risk patterns only in part when cutting on the field: in the field, low-risk players exhibited similar kinematic patterns as the high-risk players. Therefore, in-lab injury risk screening may lack ecological validity.}}, author = {{Di Paolo, Stefano and Nijmeijer, Eline M. and Bragonzoni, Laura and Gokeler, Alli and Benjaminse, Anne}}, issn = {{1424-8220}}, journal = {{Sensors}}, keywords = {{Electrical and Electronic Engineering, Biochemistry, Instrumentation, Atomic and Molecular Physics, and Optics, Analytical Chemistry}}, number = {{4}}, publisher = {{MDPI AG}}, title = {{{Definition of High-Risk Motion Patterns for Female ACL Injury Based on Football-Specific Field Data: A Wearable Sensors Plus Data Mining Approach}}}, doi = {{10.3390/s23042176}}, volume = {{23}}, year = {{2023}}, } @article{45154, author = {{Gokeler, Alli and Nijmeijer, E. M. and Heuvelmans, P. and Tak, I. and Ramponi, C. and Benjaminse, A.}}, issn = {{0933-7946}}, journal = {{Arthroskopie}}, keywords = {{Orthopedics and Sports Medicine}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Motor learning principles during rehabilitation after anterior cruciate ligament injury Prinzipien motorischen Lernens während der Rehabilitation nach vorderer Kreuzbandverletzung}}}, doi = {{10.1007/s00142-023-00606-1}}, year = {{2023}}, } @article{45159, author = {{Sherman, David A. and Baumeister, Jochen and Stock, Matt S. and Murray, Amanda M. and Bazett-Jones, David M. and Norte, Grant E.}}, issn = {{1388-2457}}, journal = {{Clinical Neurophysiology}}, keywords = {{Physiology (medical), Neurology (clinical), Neurology, Sensory Systems}}, pages = {{88--99}}, publisher = {{Elsevier BV}}, title = {{{Brain activation and single-limb balance following anterior cruciate ligament reconstruction}}}, doi = {{10.1016/j.clinph.2023.02.175}}, volume = {{149}}, year = {{2023}}, } @article{45149, abstract = {{IntroductionExergames are increasingly used in rehabilitation settings for older adults to train physical and cognitive abilities. To meet the potential that exergames hold, they need to be adapted to the individual abilities of the player and their training objectives. Therefore, it is important to know whether and how game characteristics affect their playing. The aim of this study is to investigate the effect of two different kinds of exergame (step game and balance game) played at two difficulty levels on brain activity and physical activity.MethodsTwenty-eight older independently living adults played two different exergames at two difficulty levels each. In addition, the same movements as during gaming (leaning sideways with feet in place and stepping sideways) were performed as reference movements. Brain activity was recorded using a 64-channel EEG system to assess brain activity, while physical activity was recorded using an accelerometer at the lower back and a heart rate sensor. Source-space analysis was applied to analyze the power spectral density in theta (4 Hz–7 Hz) and alpha-2 (10 Hz–12 Hz) frequency bands. Vector magnitude was applied to the acceleration data.ResultsFriedman ANOVA revealed significantly higher theta power for the exergaming conditions compared to the reference movement for both games. Alpha-2 power showed a more diverse pattern which might be attributed to task-specific conditions. Acceleration decreased significantly from the reference movement to the easy condition to the hard condition for both games.DiscussionThe results indicate that exergaming increases frontal theta activity irrespective of type of game or difficulty level, while physical activity decreases with increasing difficulty level. Heart rate was found to be an inappropriate measure in this population older adults. These findings contribute to understanding of how game characteristics affect physical and cognitive activity and consequently need to be taken into account when choosing appropriate games and game settings for exergame interventions.}}, author = {{Müller, Helen Martha and Baumeister, Jochen and Bardal, Ellen Marie and Vereijken, Beatrix and Skjæret-Maroni, Nina}}, issn = {{1663-4365}}, journal = {{Frontiers in Aging Neuroscience}}, keywords = {{Cognitive Neuroscience, Aging}}, publisher = {{Frontiers Media SA}}, title = {{{Exergaming in older adults: the effects of game characteristics on brain activity and physical activity}}}, doi = {{10.3389/fnagi.2023.1143859}}, volume = {{15}}, year = {{2023}}, } @article{43092, abstract = {{By using coordinating anions such as acetate, a water-in-salt-like coordination environment of Zn ions is achieved in relatively dilute conditions, leading to prolonged and efficient cycling of zinc metal anodes.}}, author = {{Gomez Vazquez, Dario and Pollard, Travis P. and Mars, Julian and Yoo, Ji Mun and Steinrück, Hans-Georg and Bone, Sharon E. and Safonova, Olga V. and Toney, Michael F. and Borodin, Oleg and Lukatskaya, Maria R.}}, issn = {{1754-5692}}, journal = {{Energy & Environmental Science}}, keywords = {{Pollution, Nuclear Energy and Engineering, Renewable Energy, Sustainability and the Environment, Environmental Chemistry}}, pages = {{1982--1991 (2023).}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Creating water-in-salt-like environment using coordinating anions in non-concentrated aqueous electrolytes for efficient Zn batteries}}}, doi = {{10.1039/d3ee00205e}}, volume = {{16}}, year = {{2023}}, } @article{44271, author = {{Weadock, Nicholas J. and Sterling, Tyler C. and Vigil, Julian A. and Gold-Parker, Aryeh and Smith, Ian C. and Ahammed, Ballal and Krogstad, Matthew J. and Ye, Feng and Voneshen, David and Gehring, Peter M. and Rappe, Andrew M. and Steinrück, Hans-Georg and Ertekin, Elif and Karunadasa, Hemamala I. and Reznik, Dmitry and Toney, Michael F.}}, issn = {{2542-4351}}, journal = {{Joule}}, keywords = {{General Energy}}, pages = {{1051--1066}}, publisher = {{Elsevier BV}}, title = {{{The nature of dynamic local order in CH3NH3PbI3 and CH3NH3PbBr3}}}, doi = {{10.1016/j.joule.2023.03.017}}, volume = {{7}}, year = {{2023}}, } @inbook{45185, author = {{Hannebohm, Ronja}}, booktitle = {{Biopolitik(en) in Literatur, Film und Serie: Aushandlungs- und Reflexionsräume vom 18. Jahrhundert bis heute}}, editor = {{Hannebohm, Ronja and Harmening, Anda-Lisa}}, location = {{Paderborn}}, pages = {{17--36}}, publisher = {{LibreCat University}}, title = {{{Biopolitik und Biopoethik. Modi der Aushandlung menschlichen Lebens in (Gegenwarts-)Literatur, Film und Serie}}}, doi = {{10.17619/UNIPB/1-1721}}, volume = {{4}}, year = {{2023}}, } @book{45184, editor = {{Hannebohm, Ronja and Harmening, Anda-Lisa Martha Josephine Anna}}, location = {{Paderborn}}, pages = {{297}}, publisher = {{LibreCat University}}, title = {{{Biopolitik(en) in Literatur, Film und Serie: Aushandlungs- und Reflexionsräume vom 18. Jahrhundert bis heute}}}, doi = {{10.17619/UNIPB/1-1721}}, volume = {{4}}, year = {{2023}}, } @phdthesis{43108, author = {{Pauck, Felix}}, publisher = {{Paderborn University}}, title = {{{Cooperative Android App Analysis}}}, doi = {{10.17619/UNIPB/1-1698}}, year = {{2023}}, } @inbook{45186, abstract = {{Die Überreste vom Tornado in Paderborn Was bleibt, sind die Scherben von zerbrochenen Dachziegeln. Olav Schiedel sammelt und kartiert Fragmente dieser Ziegel entlang der Tornadoschneise. Aus dem Objekt „Scherbe” wird das Material für eine künstlerische Auseinandersetzung. Die Ausstellung „Scherben“ verknüpft Archäologie mit bildender Kunst und zeigt die aktuelle Stadtgeschichte aus einer anderen, ungewohnten Perspektive. }}, author = {{Langer, Svenja}}, booktitle = {{Scherben. Der Katalog zur Ausstellung. Olav Schiedel im Raum für Kunst Paderborn. 20.05.-04.06.2023}}, keywords = {{Ausstellung, Katalog, Tornado, Scherbe, Dachziegel, Spur, Kunst}}, pages = {{6 -- 7}}, publisher = {{Lektora}}, title = {{{Impulse zur Scherbe als Spur und künstlerisches Material}}}, volume = {{1}}, year = {{2023}}, } @inproceedings{45188, author = {{Werthmann, Julian and Scheideler, Christian and Coy, Sam and Czumaj, Artur and Schneider, Philipp}}, title = {{{Routing Schemes for Hybrid Communication Networks}}}, doi = {{10.48550/ARXIV.2210.05333}}, year = {{2023}}, } @inproceedings{45193, author = {{Dou, Jinfeng and Götte, Thorsten and Hillebrandt, Henning and Scheideler, Christian and Werthmann, Julian}}, booktitle = {{Proc. of the 42nd ACM Symposium on Principles of Distributed Computing (PODC '23)}}, location = {{Orlando, USA}}, title = {{{Brief Announcement: Distributed Construction of Near-Optimal Compact Routing Schemes for Planar Graphs}}}, year = {{2023}}, } @inproceedings{44855, abstract = {{Market transactions are subject to information asymmetry about the delivered value proposition, causing transaction costs and adverse market effects among buyers and sellers. Information systems research has investigated how review systems can reduce information asymmetry in business-to-consumer markets. However, these systems cannot be readily applied to business-to-business markets, are vulnerable to manipulation, and suffer from conceptual weak spots since they use textual data or star ratings. Building on design science research, we conceptualize a new class of reputation systems based on monetary-based payments as quantitative ratings for each transaction stored on a blockchain. Using cryptography, we show that our system assures content confidentiality so that buyers can share and sell their ratings selectively, establishing a reputation ecosystem. Our prescriptive insights advance the design of reputation systems and offer new paths to understanding the antecedents, dynamics, and consequences to reduce information asymmetry in B2B transactions.}}, author = {{Hemmrich, Simon and Bobolz, Jan and Beverungen, Daniel and Blömer, Johannes}}, booktitle = {{ECIS 2023 Research Papers}}, title = {{{Designing Business Reputation Ecosystems — A Method for Issuing and Trading Monetary Ratings on a Blockchain}}}, year = {{2023}}, } @inproceedings{45205, author = {{Dreiling, Dmitrij and Itner, Dominik and Hetkämper, Tim and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}}, booktitle = {{SMSI 2023 Conference}}, isbn = {{978-3-9819376-8-8}}, location = {{Nürnberg}}, pages = {{394 -- 395}}, publisher = {{AMA Association For Sensors And Measurement}}, title = {{{Improved determination of viscoelastic material parameters using a pulse-echo measurement setup}}}, doi = {{10.5162/SMSI2023/P59}}, year = {{2023}}, } @inproceedings{43027, author = {{Seutter, Janina and Bartelheimer, Christian and Kundisch, Dennis}}, booktitle = {{Proceedings of the 18th International Conference on Design Science Research in Information Systems and Technology}}, location = {{Pretoria, South Africa}}, title = {{{Supporting Innovation through B2B Reviews – A Taxonomy of B2B Online Review Environments}}}, year = {{2023}}, } @article{45192, author = {{Götte, Thorsten and Hinnenthal, Kristian and Scheideler, Christian and Werthmann, Julian}}, journal = {{Distributed Computing}}, title = {{{Time-Optimal Construction of Overlays}}}, doi = {{https://doi.org/10.1007/s00446-023-00442-4}}, year = {{2023}}, } @inproceedings{40063, author = {{Jabr, Wael and Gutt, Dominik and Neumann, Jürgen and Kundisch, Dennis}}, booktitle = {{Proceedings of the 45th ISMS Marketing Science Conference}}, location = {{Miami, USA}}, title = {{{Updating at the Expense of Demand? The Case of Platform Apps}}}, year = {{2023}}, } @misc{45243, author = {{N., N.}}, title = {{{Development and Evaluation of a Model-Based UI Prototyping Experimentation Approach}}}, year = {{2023}}, }