@inbook{33849, abstract = {{Modern traffic control systems are key to cope with current and future traffic challenges. In this paper information obtained from a microscopic traffic estimation using various data sources is used to feed a new developed traffic control approach. The presented method can control a traffic area with multiple traffic light systems (TLS) reacting to individual road users and pedestrians. In contrast to widespread green time extension techniques, this control selects the best phase sequence by analyzing the current traffic state reconstructed in SUMO and its predicted progress. To achieve this, the key aspect of the control strategy is to use Model Predictive Control (MPC). In order to maintain realism for real world applications, among other things, the traffic phase transitions are modelled in detail and integrated within the prediction. For the efficiency, the approach incorporates a fuzzy logic preselection of all phases reducing the computational effort. The evaluation itself is able to be easily adjusted to focus on various objectives like low occupancies, reducing waiting times and emissions, few number of phase transitions etc. determining the best switching times for the selected phases. Exemplary traffic simulations demonstrate the functionality of the MPC-based control and, in addition, some aspects under development like the real-world communication network are also discussed.}}, author = {{Malena, Kevin and Link, Christopher and Bußemas, Leon and Gausemeier, Sandra and Trächtler, Ansgar}}, booktitle = {{Communications in Computer and Information Science}}, editor = {{Klein, Cornel and Jarke, Mathias and Helfert, Markus and Berns, Karsten and Gusikhin, Oleg}}, isbn = {{9783031170973}}, issn = {{1865-0929}}, keywords = {{Traffic control, Traffic estimation, Real-time, MPC, Fuzzy, Isolated intersection, Networked intersection, Sensor fusion}}, pages = {{232–254}}, publisher = {{Springer International Publishing}}, title = {{{Traffic Estimation and MPC-Based Traffic Light System Control in Realistic Real-Time Traffic Environments}}}, doi = {{10.1007/978-3-031-17098-0_12}}, volume = {{1612}}, year = {{2022}}, } @article{63778, author = {{Tuisku, Outi and Johansson-Pajala, Rose-Marie and Hoppe, Julia Amelie and Pekkarinen, Satu and Hennala, Lea and Thommes, Kirsten and Gustafsson, Christine and Melkas, Helinä}}, issn = {{0144-929X}}, journal = {{Behaviour & Information Technology}}, number = {{6}}, pages = {{758--774}}, publisher = {{Informa UK Limited}}, title = {{{Assistant nurses and orientation to care robot use in three European countries}}}, doi = {{10.1080/0144929x.2022.2042736}}, volume = {{42}}, year = {{2022}}, } @inbook{63386, author = {{Elbwart, Katharina and Keatinge, Dagmar}}, booktitle = {{Wissenstransfer als Aufgabe, Herausforderung und Chance kulturwissenschaftlicher Forschung. }}, editor = {{Harmening, Anda-Lisa and Leinfeller, Stefanie and Meier, Rebecca}}, pages = {{201--229}}, publisher = {{wbg academic}}, title = {{{Teaching Language Internationally – Wissenstransfer in einem deutsch-kanadischen Lehrprojekt in der Lehrer*innenausbildung}}}, year = {{2022}}, } @inbook{63385, author = {{Elbwart, Katharina}}, booktitle = {{Language, Migration and Identity}}, editor = {{Ronan, Patricia and Ziegler, Evelyn}}, pages = {{23--49}}, publisher = {{Peter Lang}}, title = {{{A View from the Sunshine State: Mapping Perceptions and Language Ideologies in Florida. }}}, year = {{2022}}, } @inbook{63850, author = {{Elbwart, Katharina and Keatinge, Dagmar}}, booktitle = {{Wissenstransfer als Aufgabe, Herausforderung und Chance kulturwissenschaftlicher Forschung}}, editor = {{Harmening, Anda-Lisa and Leinfeller, Stefanie and Meier, Rebecca}}, publisher = {{wbg academic}}, title = {{{Teaching Language Internationally – Wissenstransfer in einem deutsch-kanadischen Lehrprojekt in der Lehrer*innenausbildung}}}, year = {{2022}}, } @article{63845, author = {{Alfes, Luisa and Elbwart, Katharina}}, journal = {{F&E Edition: Teaching the United States: Past, Present and Future Visions}}, pages = {{23--34}}, title = {{{Painting America - Fostering visual literacy through art to teach US-American history and culture in EFL classrooms}}}, volume = {{27}}, year = {{2022}}, } @article{63846, author = {{Elbwart, Katharina}}, journal = {{Praxis Englisch }}, pages = {{44--46}}, title = {{{English Only? Multilingualism in EFL classrooms}}}, volume = {{3}}, year = {{2022}}, } @inbook{37538, author = {{Freitag, Christine}}, booktitle = {{Empirische Studien zum Praxissemester: Untersuchungen zum Bielefelder Modell}}, editor = {{Klewin, Gabriele and te Poel, Kathrin and Heinrich, Martin}}, isbn = {{978-3830945307}}, pages = {{171--176}}, publisher = {{Waxmann}}, title = {{{Vergleichende Perspektive aus dem gleichen Bundesland - ein Kommentar aus Paderborn}}}, year = {{2022}}, } @inproceedings{64115, author = {{Awais, Muhammad and Platzner, Marco}}, booktitle = {{2022 IFIP/IEEE 30th International Conference on Very Large Scale Integration (VLSI-SoC)}}, publisher = {{IEEE}}, title = {{{Automated Framework for Fast Synthesis of Approximate Hardware Accelerators}}}, doi = {{10.1109/vlsi-soc54400.2022.9939606}}, year = {{2022}}, } @article{64042, abstract = {{Abstract Polymer-derived silicon carbonitride ceramic (SiCN) is used as an electrode material to prepare cylindrical sodium/sodium ion cells for solid-state NMR investigations. During galvanostatic cycling structural changes of the environment of sodium/sodium ions are investigated by applying 23Na in-situ solid-state NMR. Changes of the signals assigned to sodium metal, intercalated sodium cation and sodium cation originating from the electrolyte are monitored as well as the occurrence of an additional signal in the region of metallic sodium. The intensity of this additional signal changes periodically with the cycling process indicating the reversibility of structures formed and deformed during the galvanostatic cycling. To identify interactions of sodium/sodium ions with the SiCN electrode materials, the cycled SiCN material is studied by 23Na ex-situ MAS NMR at high spinning rates of 20 and 50 kHz to obtain appropriate spectral resolution.}}, author = {{Sic, Edina and Melzi d’Eril, Marco and Schutjajew, Konstantin and Graczyk-Zajac, Magdalena J. and Breitzke, Hergen and Riedel, Ralf and Oschatz, Martin and Gutmann, Torsten and Buntkowsky, Gerd}}, journal = {{Batteries and Supercaps}}, pages = {{e202200066}}, title = {{{SiCN Ceramics as Electrode Materials for Sodium/Sodium Ion Cells Insights from 23Na In-Situ Solid-State NMR}}}, doi = {{10.1002/batt.202200066}}, volume = {{5}}, year = {{2022}}, } @article{64030, abstract = {{A novel, efficient approach for the functionalization of microcrystalline cellulose (MCC) is presented. The as-obtained material allows the immobilization of chiral dirhodium catalysts preserving their enantioselectivity in asymmetric cyclopropanation reactions. As model, microcrystalline cellulose is modified with a polyethylene glycol derived linker, and Rh-2(S-DOSP)(4) is grafted on the material to produce a heterogeneous catalyst. SEM images at different stages of the immobilization show an unchanging uniform morphology, providing constantly good separation characteristics. The modification of the cellulose material with the polyethylene derived linker and the immobilization process are monitored using DNP enhanced H-1 -{\textgreater} C-13 CP MAS NMR, quantitative F-19 MAS NMR, TGA and ICP-OES analysis, confirming the success of the immobilization as well as the stability of bonds between the used linker molecule and the cellulose material. Finally, the evaluation of the produced catalyst is demonstrated in the asymmetric cyclopropanation reaction between styrene and methyl(E)-2-diazo-4-phenylbut-3-enoate showing excellent enantioselectivity with an ee of nearly 90% over a wide temperature range as well as good recyclability characteristics in four consecutive catalysis cycles.}}, author = {{Roesler, L. and Hoefler, M. V. and Breitzke, H. and Wissel, T. and Herr, K. and Heise, H. and Gutmann, Torsten and Buntkowsky, G.}}, issn = {{0969-0239}}, journal = {{Cellulose}}, number = {{11}}, pages = {{6283–6299}}, title = {{{Dirhodium complex immobilization on modified cellulose for highly selective heterogeneous cyclopropanation reactions}}}, doi = {{10.1007/s10570-022-04654-y}}, volume = {{29}}, year = {{2022}}, } @article{63994, abstract = {{Six cluster salts which consist of hexanuclear cluster anions [Nb6Cl12iX6a]2– (X = Cl or Br) and protonated crown ether molecules (15-crown-5 (15cr5) and 12-crown-4 (12cr4)) or crown ether-stabilized oxonium cations as well as one compound consisting of neutral cluster units, [Nb6Cl16(H2O)2]·4 dioxane, were synthesized in good to high yields. The single-crystal X-ray structures of six of these compounds were determined. The cation/anion ratios and the bond distances confirm in all cases oxidized cluster cores with 14 cluster-based electrons. The cations of the cluster salts are either sandwich-type dimers of the formula [(15cr5)H]22+ or [(15cr5)(H3O)]22+ with the protons or oxonium ions embedded in between the crown ether rings or monomeric units in the case of [(12cr4)H]+. 1H NMR investigations show that the cluster salts are strong Brønsted acids. The fact that the cluster core of [Nb6Cl16(H2O)2]·4 dioxane is oxidized but still carries water ligands indicates that within the multi-step reaction sequence of the formation of the cluster-supported acids, the oxidation step happens much faster than the ligand exchange steps. Temperature-dependent 2H MAS NMR spectra of deuterium-exchanged [(15cr5)H]2[Nb6Cl18]·2 CHCl3 are indicative of dynamic processes of the hydrogen-bonded protons within the crown ether molecule. Six cluster salts which consist of hexanuclear cluster anions [Nb6Cl12iX6a]2– (X = Cl or Br) and protonated crown ether molecules (15-crown-5 (15cr5) and 12-crown-4 (12cr4)) or crown ether-stabilized oxonium cations as well as one compound consisting of neutral cluster units, [Nb6Cl16(H2O)2]·4 dioxane, were synthesized in good to high yields. The single-crystal X-ray structures of six of these compounds were determined. The cation/anion ratios and the bond distances confirm in all cases oxidized cluster cores with 14 cluster-based electrons. The cations of the cluster salts are either sandwich-type dimers of the formula [(15cr5)H]22+ or [(15cr5)(H3O)]22+ with the protons or oxonium ions embedded in between the crown ether rings or monomeric units in the case of [(12cr4)H]+. 1H NMR investigations show that the cluster salts are strong Brønsted acids. The fact that the cluster core of [Nb6Cl16(H2O)2]·4 dioxane is oxidized but still carries water ligands indicates that within the multi-step reaction sequence of the formation of the cluster-supported acids, the oxidation step happens much faster than the ligand exchange steps. Temperature-dependent 2H MAS NMR spectra of deuterium-exchanged [(15cr5)H]2[Nb6Cl18]·2 CHCl3 are indicative of dynamic processes of the hydrogen-bonded protons within the crown ether molecule.}}, author = {{Koenig, Jonas and Gutmann, Torsten and Buntkowsky, Gerd and Koeckerling, Martin}}, journal = {{Inorganic Chemistry}}, number = {{40}}, pages = {{15983–15990}}, publisher = {{American Chemical Society}}, title = {{{Strong Cluster-Supported Brønsted Acids: Hexanuclear Niobium Cluster Compounds with Protonated Crown Ether Cations: (Crown-H)2[Nb6Cl12iX6a] (X = Cl or Br) and the Intermediate [Nb6Cl16(H2O)2]·4 dioxane}}}, volume = {{61}}, year = {{2022}}, } @article{63997, abstract = {{Abstract Herein we report the mechanochemical Friedel-Crafts alkylation of 1,3,5-triphenylbenzene (TPB) with two organochloride cross-linking agents, dichloromethane (DCM) and chloroform (CHCl3), respectively. During a thorough milling parameter evaluation, the DCM-linked polymers were found to be flexible and extremely sensitive toward parameter changes, which even enables the synthesis of a polymer with a SSABET of 1670 m2/g, on par with the solution-based reference. Contrary, CHCl3-linked polymers are exhibiting a rigid structure, with a high porosity that is widely unaffected by parameter changes. As a result, a polymer with a SSABET of 1280 m2/g could be generated in as little as 30 minutes, outperforming the reported literature analogue in terms of synthesis time and SSABET. To underline the environmental benefits of our fast and solvent-free synthesis approach, the green metrics are discussed, revealing an enhancement of the mass intensity, mass productivity and the E-factor, as well as of synthesis time and the work-up in comparison to the classical synthesis. Therefore, the mechanochemical polymerization is presented as a versatile tool, enabling the generation of highly porous polymers within short reaction times, with a minimal use of chlorinated cross-linker and with the possibility of a post polymerization modification.}}, author = {{Krusenbaum, Annika and Geisler, Jonathan and Kraus, Fabien Joel Leon and Grätz, Sven and Höfler, Mark Valentin and Gutmann, Torsten and Borchardt, Lars}}, journal = {{Journal of Polymer Science}}, number = {{1}}, pages = {{62–71}}, title = {{{The mechanochemical Friedel-Crafts polymerization as a solvent-free cross-linking approach toward microporous polymers}}}, doi = {{10.1002/pol.20210606}}, volume = {{60}}, year = {{2022}}, } @article{63983, abstract = {{Polyethylene glycol (PEG) is increasingly used as an alternative green chemical solvent. New experimental measurements on density, viscosity, and self-diffusion coefficient are presented for PEG200, PEG400, and several binary mixtures of tri- and hexaethylene glycol covering a temperature range from 298.15 to 358.15 K. Because PEGs are polydisperse, the exact compositions of PEG200 from six different vendors are analytically determined and found to be comparable. Thus, only two of the most differing PEG200 samples are further examined. The effects of water as the most common impurity on densities, viscosities, and self-diffusion coefficients are inspected as well as the results of the “dry” samples obtained by extrapolation to zero water content. The obtained results are carefully compared to the available literature data. The temperature dependence of these physical properties is investigated and found to be linear for density, while viscosity and self-diffusion coefficients follow the Arrhenius law. Attempts to calculate the properties of the binary mixtures and PEG200 samples from the mole fraction weighted average of the physical properties of the mixture components result in reasonable agreement. Agreement between calculated and measured molar volumes is within measurement uncertainty. Agreement of calculated and measured viscosities is mostly within a few percent but increases with decreasing temperature (largest viscosities) reaching values of up to 15%. Similarly, calculated and measured self-diffusion coefficients mostly agree within 20%, which is near the measurement uncertainty, but overestimates increase to 30% for the highest temperatures (largest self-diffusion coefficients).}}, author = {{Hoffmann, Markus M. and Kealy, Joseph D. and Gutmann, Torsten and Buntkowsky, Gerd}}, journal = {{Journal of Chemical and Engineering Data}}, number = {{1}}, pages = {{88–103}}, publisher = {{American Chemical Society}}, title = {{{Densities, Viscosities, and Self-Diffusion Coefficients of Several Polyethylene Glycols}}}, doi = {{10.1021/acs.jced.1c00759}}, volume = {{67}}, year = {{2022}}, } @article{63948, abstract = {{In this work, the behavior of four different commercially available polarizing agents is investigated employing the non-ionic model surfactant 1-octanol as analyte. A relative method for the comparison of the proportion of the direct and indirect polarization transfer pathways is established, allowing a direct comparison of the polarization efficacy for different radicals and different parts of the 1-octanol molecule despite differences in radical concentration or sample amount. With this approach, it could be demonstrated that the hydrophilicity is a key factor in the way polarization is transferred from the polarizing agent to the analyte. These findings are confirmed by the determination of buildup times Tb, illustrating that the choice of polarizing agent plays an essential role in ensuring an optimal polarization transfer and therefore the maximum amount of enhancement possible for DNP enhanced NMR measurements.}}, author = {{Döller, Sonja C. and Gutmann, Torsten and Hoffmann, Markus and Buntkowsky, Gerd}}, journal = {{Solid State Nuclear Magnetic Resonance}}, keywords = {{DNP NMR, Dynamics, Low temperature NMR, Octanol, Solid state NMR, Surfactants}}, pages = {{101829}}, title = {{{A case study on the influence of hydrophilicity on the signal enhancement by dynamic nuclear polarization}}}, volume = {{122}}, year = {{2022}}, } @article{63944, abstract = {{Abstract The donor properties of a set of bulky ferrocene based bisphosphanes (Fe(C5H4PMes2)2 and (C5H4PMes2)Fe(C5H4PtBu2 with Mes= mesityl and tBu=tert-butyl) were probed by exploring the NMR parameters of the corresponding selenophosphoranes amended by cyclovoltammetry. The ligand properties were explored in the complexation of copper phenylacetylide which is relevant as intermediate in the Cu(I) catalyzed CO2 addition to phenylacetylene. Owing to the poor solubility of the resulting complexes their characterization was performed with solid state NMR spectroscopy amended by IR spectroscopy, mass spectrometry and elemental analysis. Remarkably, these complexes feature luminescent properties, albeit with limited quantum yield.}}, author = {{Dey, Subhayan and Roesler, Fabian and Höfler, Mark V. and Bruhn, Clemens and Gutmann, Torsten and Pietschnig, Rudolf}}, journal = {{European Journal of Inorganic Chemistry}}, number = {{3}}, pages = {{e202100939}}, title = {{{Synthesis, Structure and Cu-Phenylacetylide Coordination of an Unsymmetrically Substituted Bulky dppf-Analog}}}, doi = {{10.1002/ejic.202100939}}, volume = {{2022}}, year = {{2022}}, } @article{63943, abstract = {{A lithium halide exchange reaction at low-temperature, via the treatment of 2,6-di(isopropyl)phenyllithium on 1,1′-bis-(dichlorophosphino)ferrocene, resulted in the first isolated example of an aryl-substituted diphospha [2]ferrocenophane (diphospha [2]FCP) 2. Although compound 2 did not show any recognizable thermal reaction at higher temperature (up to 350 °C), its tert-butyl-substituted counterpart 1 underwent a clean selective heat-mediated P–C cleavage reaction, followed by an inter-molecular rearrangement, to produce a P–P fused bis [3]ferrocenophane 3 with all-trans oriented P-chain, which upon further heating gave a polyferrocenylphosphane tBu-[Fc’P2]n-tBu (4). Since polymer 4 is insoluble in common organic solvents, it has been characterized with solid-state techniques, including solid-state NMR. Density functional theory (DFT) has further been employed to identify possible pathways for P–C bond cleavage on 1 and 2, as well as to evaluate accessible pathways for further polymerization toward 4.}}, author = {{Dey, Subhayan and Kargin, Denis and Höfler, Mark V. and Szathmari, Balazs and Bruhn, Clemens and Gutmann, Torsten and Kelemen, Zsolt and Pietschnig, Rudolf}}, journal = {{Polymer}}, keywords = {{solid-state nmr, Ansa-ferrocene, DFT calculations, Oligophosphine, Polyphosphane, Ring-opening polymerization}}, pages = {{124589}}, title = {{{Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles}}}, volume = {{242}}, year = {{2022}}, } @article{63934, author = {{Buntkowsky, Gerd and Döller, Sonja and Haro-Mares, Nadia and Gutmann, Torsten and Hoffmann, Markus}}, journal = {{Zeitschrift für Physikalische Chemie}}, number = {{6-8}}, pages = {{939–960}}, title = {{{Solid-state NMR studies of non-ionic surfactants confined in mesoporous silica}}}, doi = {{10.1515/zpch-2021-3132}}, volume = {{236}}, year = {{2022}}, } @article{63932, author = {{Buntkowsky, G. and Gutmann, Torsten}}, journal = {{Nature Catalysis}}, pages = {{848–849}}, title = {{{PASADENA NMR}}}, volume = {{5}}, year = {{2022}}, } @article{34569, title = {{{On the (Limited) Generalization of MasterFace Attacks and Its Relation to the Capacity of Face Representations}}}, doi = {{10.48550/ARXIV.2203.12387}}, year = {{2022}}, }