--- _id: '48585' abstract: - lang: eng text: The use of stainless steel with high strain hardening as material for self-piercing rivets is a promising approach to shorten the manufacturing process. Due to the corrosion resistance of the material and the achieved high strength within the forming process, the heat treatment and the coating can be omitted. As the strength within the rivet material is achieved by cold forming, the strength distribution within the rivet remains intact after the manufacturing process. The aim of the contribution presented is the exploitation of the potential of this strength distribution to improve the performance of the self-piercing rivets. Therefore, the scope of the examination is on the analysis of the influence of the local strength on the deformation behaviour of the rivet during joining. While it is unfeasible to manufacture rivets with any desired strength distribution, numerical simulation offers an efficient opportunity to study the effects of varying local strengths. By using a definable true strain distribution within the rivet as presetting for the simulation, different strength distributions can be modelled. Through the simulation of the joining process, the deformation behaviour of the rivet can be examined. Based on the insights of this analysis, a strength distribution is created that supports the joining of challenging material combinations consisting of high strength steel and aluminium. Finally, the approach is verified by experimental joining tests. author: - first_name: Benedikt full_name: Uhe, Benedikt id: '38131' last_name: Uhe - first_name: Clara-Maria full_name: Kuball, Clara-Maria last_name: Kuball - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Uhe B, Kuball C-M, Merklein M, Meschut G. Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material. In: Mocellin K, Bouchard P-O, Bigot Régis, Balan T, eds. Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity. Vol 3. Lecture Notes in Mechanical Engineering. Springer; 2023:64-71. doi:10.1007/978-3-031-41341-4_8' apa: Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2023). Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material. In K. Mocellin, P.-O. Bouchard, Régis Bigot, & T. Balan (Eds.), Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity. (Vol. 3, pp. 64–71). Springer. https://doi.org/10.1007/978-3-031-41341-4_8 bibtex: '@inproceedings{Uhe_Kuball_Merklein_Meschut_2023, place={Cham}, series={Lecture Notes in Mechanical Engineering.}, title={Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material}, volume={3}, DOI={10.1007/978-3-031-41341-4_8}, booktitle={Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity.}, publisher={Springer}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}, editor={Mocellin, Katia and Bouchard, Pierre-Olivier and Bigot, Régis and Balan, Tudor}, year={2023}, pages={64–71}, collection={Lecture Notes in Mechanical Engineering.} }' chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut. “Controlled Rivet Deformation During Self-Piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material.” In Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity., edited by Katia Mocellin, Pierre-Olivier Bouchard, Régis Bigot, and Tudor Balan, 3:64–71. Lecture Notes in Mechanical Engineering. Cham: Springer, 2023. https://doi.org/10.1007/978-3-031-41341-4_8.' ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material,” in Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity., 2023, vol. 3, pp. 64–71, doi: 10.1007/978-3-031-41341-4_8.' mla: Uhe, Benedikt, et al. “Controlled Rivet Deformation During Self-Piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material.” Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity., edited by Katia Mocellin et al., vol. 3, Springer, 2023, pp. 64–71, doi:10.1007/978-3-031-41341-4_8. short: 'B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, in: K. Mocellin, P.-O. Bouchard, Régis Bigot, T. Balan (Eds.), Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity., Springer, Cham, 2023, pp. 64–71.' date_created: 2023-11-02T08:06:11Z date_updated: 2026-02-27T10:07:14Z department: - _id: '157' doi: 10.1007/978-3-031-41341-4_8 editor: - first_name: Katia full_name: Mocellin, Katia last_name: Mocellin - first_name: Pierre-Olivier full_name: Bouchard, Pierre-Olivier last_name: Bouchard - first_name: ' Régis' full_name: Bigot, Régis last_name: Bigot - first_name: Tudor full_name: Balan, Tudor last_name: Balan intvolume: ' 3' language: - iso: eng page: 64-71 place: Cham publication: Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity. publisher: Springer quality_controlled: '1' series_title: Lecture Notes in Mechanical Engineering. status: public title: Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material type: conference user_id: '53912' volume: 3 year: '2023' ... --- _id: '47066' author: - first_name: Christoph full_name: Vogelsang, Christoph id: '4245' last_name: Vogelsang orcid: 0000-0002-5804-1855 - first_name: Jana full_name: Meier, Jana id: '28542' last_name: Meier orcid: https://orcid.org/0000-0002-6756-9440 - first_name: Thomas full_name: Janzen, Thomas id: '89329' last_name: Janzen orcid: 0009-0003-1941-166X - first_name: Philipp full_name: Wotschel, Philipp id: '89529' last_name: Wotschel citation: ama: 'Vogelsang C, Meier J, Janzen T, Wotschel P. Acceptance of simulation-based assessment formats in teacher education. . In: EARLI Conference 2023. ; 2023.' apa: Vogelsang, C., Meier, J., Janzen, T., & Wotschel, P. (2023). Acceptance of simulation-based assessment formats in teacher education. . EARLI Conference 2023. EARLI Conference 2023, Thessaloniki, Greece. bibtex: '@inproceedings{Vogelsang_Meier_Janzen_Wotschel_2023, title={Acceptance of simulation-based assessment formats in teacher education. }, booktitle={EARLI Conference 2023}, author={Vogelsang, Christoph and Meier, Jana and Janzen, Thomas and Wotschel, Philipp}, year={2023} }' chicago: Vogelsang, Christoph, Jana Meier, Thomas Janzen, and Philipp Wotschel. “Acceptance of Simulation-Based Assessment Formats in Teacher Education. .” In EARLI Conference 2023, 2023. ieee: C. Vogelsang, J. Meier, T. Janzen, and P. Wotschel, “Acceptance of simulation-based assessment formats in teacher education. ,” presented at the EARLI Conference 2023, Thessaloniki, Greece., 2023. mla: Vogelsang, Christoph, et al. “Acceptance of Simulation-Based Assessment Formats in Teacher Education. .” EARLI Conference 2023, 2023. short: 'C. Vogelsang, J. Meier, T. Janzen, P. Wotschel, in: EARLI Conference 2023, 2023.' conference: end_date: 2023-08-26 location: ' Thessaloniki, Greece.' name: EARLI Conference 2023 start_date: 2023-08-22 date_created: 2023-09-14T12:31:27Z date_updated: 2025-12-03T08:58:53Z department: - _id: '4' - _id: '33' language: - iso: eng publication: EARLI Conference 2023 status: public title: 'Acceptance of simulation-based assessment formats in teacher education. ' type: conference user_id: '4245' year: '2023' ... --- _id: '63043' abstract: - lang: eng text: Spatial modes of light have become highly attractive to increase the dimension and, thereby, security and information capacity in quantum key distribution (QKD). So far, only transverse electric field components have been considered, while longitudinal polarization components have remained neglected. Here, we present an approach to include all three spatial dimensions of electric field oscillation in QKD by implementing our tunable, on-a-chip vector beam decoder (VBD). This inversely designed device pioneers the "preparation" and "measurement" of three-dimensionally polarized mutually unbiased basis states for high-dimensional (HD) QKD and paves the way for the integration of HD QKD with spatial modes in multifunctional on-a-chip photonics platforms. citation: ama: Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes. Published online 2023. doi:10.48550/ARXIV.2304.12296 apa: Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes. (2023). https://doi.org/10.48550/ARXIV.2304.12296 bibtex: '@article{Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes_2023, DOI={10.48550/ARXIV.2304.12296}, year={2023} }' chicago: “Tunable Vector Beam Decoder by Inverse Design for High-Dimensional Quantum Key Distribution with 3D Polarized Spatial Modes,” 2023. https://doi.org/10.48550/ARXIV.2304.12296. ieee: '“Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes,” 2023, doi: 10.48550/ARXIV.2304.12296.' mla: Tunable Vector Beam Decoder by Inverse Design for High-Dimensional Quantum Key Distribution with 3D Polarized Spatial Modes. 2023, doi:10.48550/ARXIV.2304.12296. short: (2023). date_created: 2025-12-11T20:37:08Z date_updated: 2025-12-11T20:46:50Z department: - _id: '623' - _id: '15' - _id: '230' doi: 10.48550/ARXIV.2304.12296 status: public title: Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes type: journal_article user_id: '112030' year: '2023' ... --- _id: '57556' abstract: - lang: eng text: 'AbstractMathematical modelling emphasizes the connection between mathematics and reality — still, tasks are often exclusively introduced inside the classroom. The paper examines the potential of different task settings for mathematical modelling with real objects: outdoors at the real object itself, with photographs and with a 3D model representation. It is the aim of the study to analyze how far the mathematical modelling steps of students solving the tasks differ in comparison to the settings and representations. In a qualitative study, 19 lower secondary school students worked on tasks of all three settings in a Latin square design. Their working processes in the settings are compared with a special focus on the modelling steps Simplifying and Structuring, as well as Mathematizing. The analysis by means of activity diagrams and a qualitative content analysis shows that both steps are particularly relevant when students work with real objects — independent from the three settings. Still, differences in the actual activities could be observed in the students’ discussion on the appropriateness of a model and in dealing with inaccuracies at the real object. In addition, the process of data collection shows different procedures depending on the setting which presents each of them as an enrichment for the acquisition of modelling skills.' author: - first_name: Simone full_name: Jablonski, Simone last_name: Jablonski citation: ama: Jablonski S. Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation. Educational Studies in Mathematics. 2023;113(2):307-330. doi:10.1007/s10649-023-10215-2 apa: Jablonski, S. (2023). Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation. Educational Studies in Mathematics, 113(2), 307–330. https://doi.org/10.1007/s10649-023-10215-2 bibtex: '@article{Jablonski_2023, title={Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation}, volume={113}, DOI={10.1007/s10649-023-10215-2}, number={2}, journal={Educational Studies in Mathematics}, publisher={Springer Science and Business Media LLC}, author={Jablonski, Simone}, year={2023}, pages={307–330} }' chicago: 'Jablonski, Simone. “Is It All about the Setting? — A Comparison of Mathematical Modelling with Real Objects and Their Representation.” Educational Studies in Mathematics 113, no. 2 (2023): 307–30. https://doi.org/10.1007/s10649-023-10215-2.' ieee: 'S. Jablonski, “Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation,” Educational Studies in Mathematics, vol. 113, no. 2, pp. 307–330, 2023, doi: 10.1007/s10649-023-10215-2.' mla: Jablonski, Simone. “Is It All about the Setting? — A Comparison of Mathematical Modelling with Real Objects and Their Representation.” Educational Studies in Mathematics, vol. 113, no. 2, Springer Science and Business Media LLC, 2023, pp. 307–30, doi:10.1007/s10649-023-10215-2. short: S. Jablonski, Educational Studies in Mathematics 113 (2023) 307–330. date_created: 2024-12-04T10:46:14Z date_updated: 2025-12-17T08:56:50Z doi: 10.1007/s10649-023-10215-2 intvolume: ' 113' issue: '2' language: - iso: eng page: 307-330 publication: Educational Studies in Mathematics publication_identifier: issn: - 0013-1954 - 1573-0816 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation type: journal_article user_id: '111489' volume: 113 year: '2023' ... --- _id: '63228' abstract: - lang: eng text: AbstractA simulation based on the frequency‐domain lattice Boltzmann method (FreqD‐LBM) is employed to predict the shifts of resonance frequency, Δf, and half bandwidth, ΔΓ, of a quartz crystal microbalance with dissipation monitoring (QCM‐D) induced by the adsorption of rigid spheres to the resonator surface. The comparison with the experimental values of Δf and ΔΓ allows to estimate the stiffness of the contacts between the spheres and the resonator surface. The contact stiffness is of interest in contact mechanics, but also in sensing because it depends on the properties of thin films situated between the resonator surface and the sphere. The simulation differs from previous implementations of FreqD‐LBM insofar, as the material inside the particles is not included in the FreqD‐LBM algorithm. Rather, the particle surface is configured to be an oscillating boundary. The amplitude of the particles' motions (displacement and rotation) is governed by the force balance at the surface of the particle. Because the contact stiffness enters this balance, it can be derived from experimental values of Δf and ΔΓ. The simulation reproduces experiments by the Krakow group. For sufficiently small spheres, a contact stiffness can be derived from the comparison of the simulation with the experiment. article_number: '2300190' article_type: original author: - first_name: Diethelm full_name: Johannsmann, Diethelm last_name: Johannsmann - first_name: Christian full_name: Leppin, Christian id: '117722' last_name: Leppin - first_name: Arne full_name: Langhoff, Arne last_name: Langhoff citation: ama: Johannsmann D, Leppin C, Langhoff A. Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation. Advanced Theory and Simulations. 2023;6(11). doi:10.1002/adts.202300190 apa: Johannsmann, D., Leppin, C., & Langhoff, A. (2023). Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation. Advanced Theory and Simulations, 6(11), Article 2300190. https://doi.org/10.1002/adts.202300190 bibtex: '@article{Johannsmann_Leppin_Langhoff_2023, title={Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation}, volume={6}, DOI={10.1002/adts.202300190}, number={112300190}, journal={Advanced Theory and Simulations}, publisher={Wiley}, author={Johannsmann, Diethelm and Leppin, Christian and Langhoff, Arne}, year={2023} }' chicago: Johannsmann, Diethelm, Christian Leppin, and Arne Langhoff. “Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation.” Advanced Theory and Simulations 6, no. 11 (2023). https://doi.org/10.1002/adts.202300190. ieee: 'D. Johannsmann, C. Leppin, and A. Langhoff, “Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation,” Advanced Theory and Simulations, vol. 6, no. 11, Art. no. 2300190, 2023, doi: 10.1002/adts.202300190.' mla: Johannsmann, Diethelm, et al. “Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation.” Advanced Theory and Simulations, vol. 6, no. 11, 2300190, Wiley, 2023, doi:10.1002/adts.202300190. short: D. Johannsmann, C. Leppin, A. Langhoff, Advanced Theory and Simulations 6 (2023). date_created: 2025-12-18T17:03:12Z date_updated: 2025-12-18T17:41:08Z doi: 10.1002/adts.202300190 extern: '1' intvolume: ' 6' issue: '11' language: - iso: eng publication: Advanced Theory and Simulations publication_identifier: issn: - 2513-0390 - 2513-0390 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Stiffness of Contacts between Adsorbed Particles and the Surface of a QCM‐D Inferred from the Adsorption Kinetics and a Frequency‐Domain Lattice Boltzmann Simulation type: journal_article user_id: '117722' volume: 6 year: '2023' ... --- _id: '57558' abstract: - lang: eng text: 'AbstractMathematical modelling emphasizes the connection between mathematics and reality — still, tasks are often exclusively introduced inside the classroom. The paper examines the potential of different task settings for mathematical modelling with real objects: outdoors at the real object itself, with photographs and with a 3D model representation. It is the aim of the study to analyze how far the mathematical modelling steps of students solving the tasks differ in comparison to the settings and representations. In a qualitative study, 19 lower secondary school students worked on tasks of all three settings in a Latin square design. Their working processes in the settings are compared with a special focus on the modelling steps Simplifying and Structuring, as well as Mathematizing. The analysis by means of activity diagrams and a qualitative content analysis shows that both steps are particularly relevant when students work with real objects — independent from the three settings. Still, differences in the actual activities could be observed in the students’ discussion on the appropriateness of a model and in dealing with inaccuracies at the real object. In addition, the process of data collection shows different procedures depending on the setting which presents each of them as an enrichment for the acquisition of modelling skills.' author: - first_name: Simone full_name: Jablonski, Simone last_name: Jablonski citation: ama: Jablonski S. Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation. Educational Studies in Mathematics. 2023;113(2):307-330. doi:10.1007/s10649-023-10215-2 apa: Jablonski, S. (2023). Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation. Educational Studies in Mathematics, 113(2), 307–330. https://doi.org/10.1007/s10649-023-10215-2 bibtex: '@article{Jablonski_2023, title={Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation}, volume={113}, DOI={10.1007/s10649-023-10215-2}, number={2}, journal={Educational Studies in Mathematics}, publisher={Springer Science and Business Media LLC}, author={Jablonski, Simone}, year={2023}, pages={307–330} }' chicago: 'Jablonski, Simone. “Is It All about the Setting? — A Comparison of Mathematical Modelling with Real Objects and Their Representation.” Educational Studies in Mathematics 113, no. 2 (2023): 307–30. https://doi.org/10.1007/s10649-023-10215-2.' ieee: 'S. Jablonski, “Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation,” Educational Studies in Mathematics, vol. 113, no. 2, pp. 307–330, 2023, doi: 10.1007/s10649-023-10215-2.' mla: Jablonski, Simone. “Is It All about the Setting? — A Comparison of Mathematical Modelling with Real Objects and Their Representation.” Educational Studies in Mathematics, vol. 113, no. 2, Springer Science and Business Media LLC, 2023, pp. 307–30, doi:10.1007/s10649-023-10215-2. short: S. Jablonski, Educational Studies in Mathematics 113 (2023) 307–330. date_created: 2024-12-04T10:46:36Z date_updated: 2024-12-04T10:47:00Z doi: 10.1007/s10649-023-10215-2 intvolume: ' 113' issue: '2' language: - iso: eng page: 307-330 publication: Educational Studies in Mathematics publication_identifier: issn: - 0013-1954 - 1573-0816 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Is it all about the setting? — A comparison of mathematical modelling with real objects and their representation type: journal_article user_id: '111489' volume: 113 year: '2023' ... --- _id: '56627' abstract: - lang: eng text: Pillow-plate heat exchangers (PPHEs) represent a suitable alternative to conventional shell-and-tube and plate heat exchangers. The inherent waviness of their channels promotes fluid mixing in the boundary layers and facilitates heat transfer. The overall thermo-hydraulic performance of PPHEs can further be enhanced by applying secondary surface structuring, thus increasing their competitiveness against conventional heat exchangers. In this work, various secondary structures applied on the PPHE surface were studied numerically to explore their potential to enhance near-wall mixing. Computational fluid dynamics (CFD) simulations of single-phase turbulent flow in the outer PPHE channel were performed and pressure drop, heat transfer coefficients, and overall thermo-hydraulic efficiency were determined. The simulation results clearly demonstrate a positive impact of secondary structuring on heat transfer in PPHEs. article_number: '7284' author: - first_name: Reza full_name: Afsahnoudeh, Reza id: '90390' last_name: Afsahnoudeh orcid: https://orcid.org/0009-0001-3161-8036 - first_name: Andreas full_name: Wortmeier, Andreas id: '49825' last_name: Wortmeier - first_name: Maik full_name: Holzmüller, Maik id: '82645' last_name: Holzmüller - first_name: Yi full_name: Gong, Yi id: '98514' last_name: Gong - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg - first_name: Eugeny full_name: Kenig, Eugeny id: '665' last_name: Kenig citation: ama: 'Afsahnoudeh R, Wortmeier A, Holzmüller M, Gong Y, Homberg W, Kenig E. Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis. Energies. 2023;16(21). doi:10.3390/en16217284' apa: 'Afsahnoudeh, R., Wortmeier, A., Holzmüller, M., Gong, Y., Homberg, W., & Kenig, E. (2023). Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis. Energies, 16(21), Article 7284. https://doi.org/10.3390/en16217284' bibtex: '@article{Afsahnoudeh_Wortmeier_Holzmüller_Gong_Homberg_Kenig_2023, title={Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis}, volume={16}, DOI={10.3390/en16217284}, number={217284}, journal={Energies}, publisher={MDPI AG}, author={Afsahnoudeh, Reza and Wortmeier, Andreas and Holzmüller, Maik and Gong, Yi and Homberg, Werner and Kenig, Eugeny}, year={2023} }' chicago: 'Afsahnoudeh, Reza, Andreas Wortmeier, Maik Holzmüller, Yi Gong, Werner Homberg, and Eugeny Kenig. “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis.” Energies 16, no. 21 (2023). https://doi.org/10.3390/en16217284.' ieee: 'R. Afsahnoudeh, A. Wortmeier, M. Holzmüller, Y. Gong, W. Homberg, and E. Kenig, “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis,” Energies, vol. 16, no. 21, Art. no. 7284, 2023, doi: 10.3390/en16217284.' mla: 'Afsahnoudeh, Reza, et al. “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis.” Energies, vol. 16, no. 21, 7284, MDPI AG, 2023, doi:10.3390/en16217284.' short: R. Afsahnoudeh, A. Wortmeier, M. Holzmüller, Y. Gong, W. Homberg, E. Kenig, Energies 16 (2023). date_created: 2024-10-15T12:10:31Z date_updated: 2025-01-02T11:55:59Z department: - _id: '831' - _id: '9' doi: 10.3390/en16217284 intvolume: ' 16' issue: '21' language: - iso: eng publication: Energies publication_identifier: issn: - 1996-1073 publication_status: published publisher: MDPI AG status: public title: 'Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis' type: journal_article user_id: '90390' volume: 16 year: '2023' ... --- _id: '48580' abstract: - lang: eng text: "Abstract\r\n Sandwich packings represent new separation column internals, with a potential to intensify mass transfer. They comprise two conventional structured packings with different specific geometrical surface areas. In this work, the complex fluid dynamics in sandwich packings is modeled using a novel approach based on a one-dimensional, steady momentum balance of the liquid and gas phases. The interactions between the three present phases (gas, liquid, and solid) are considered by closures incorporated into the momentum balance. The formulation of these closures is derived from two fluid-dynamic analogies for the film and froth flow patterns. The adjustable parameters in the closures are regressed for the film flow using dry pressure drop measurements and liquid hold-up data in trickle flow conditions. For the froth flow, the tuning parameters are fitted to overall pressure drop measurements and local liquid hold-up data acquired from ultra-fast X-ray tomography (UFXCT). The model predicts liquid hold-up and pressure drop data with an average relative deviation of 16.4 % and 19 %, respectively. Compared to previous fluid dynamic models for sandwich packings, the number of adjustable parameters could be reduced while maintaining comparable accuracy." author: - first_name: Patrick full_name: Franke, Patrick id: '93922' last_name: Franke - first_name: Iman full_name: Shabanilemraski, Iman last_name: Shabanilemraski - first_name: Markus full_name: Schubert, Markus last_name: Schubert - first_name: Uwe full_name: Hampel, Uwe last_name: Hampel - first_name: Eugeny Y. full_name: Kenig, Eugeny Y. id: '665' last_name: Kenig citation: ama: Franke P, Shabanilemraski I, Schubert M, Hampel U, Kenig EY. A new approach to model the fluid dynamics in sandwich packings. Chemical Product and Process Modeling. 2023;0(0). doi:10.1515/cppm-2023-0054 apa: Franke, P., Shabanilemraski, I., Schubert, M., Hampel, U., & Kenig, E. Y. (2023). A new approach to model the fluid dynamics in sandwich packings. Chemical Product and Process Modeling, 0(0). https://doi.org/10.1515/cppm-2023-0054 bibtex: '@article{Franke_Shabanilemraski_Schubert_Hampel_Kenig_2023, title={A new approach to model the fluid dynamics in sandwich packings}, volume={0}, DOI={10.1515/cppm-2023-0054}, number={0}, journal={Chemical Product and Process Modeling}, publisher={Walter de Gruyter GmbH}, author={Franke, Patrick and Shabanilemraski, Iman and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}, year={2023} }' chicago: Franke, Patrick, Iman Shabanilemraski, Markus Schubert, Uwe Hampel, and Eugeny Y. Kenig. “A New Approach to Model the Fluid Dynamics in Sandwich Packings.” Chemical Product and Process Modeling 0, no. 0 (2023). https://doi.org/10.1515/cppm-2023-0054. ieee: 'P. Franke, I. Shabanilemraski, M. Schubert, U. Hampel, and E. Y. Kenig, “A new approach to model the fluid dynamics in sandwich packings,” Chemical Product and Process Modeling, vol. 0, no. 0, 2023, doi: 10.1515/cppm-2023-0054.' mla: Franke, Patrick, et al. “A New Approach to Model the Fluid Dynamics in Sandwich Packings.” Chemical Product and Process Modeling, vol. 0, no. 0, Walter de Gruyter GmbH, 2023, doi:10.1515/cppm-2023-0054. short: P. Franke, I. Shabanilemraski, M. Schubert, U. Hampel, E.Y. Kenig, Chemical Product and Process Modeling 0 (2023). date_created: 2023-10-31T18:43:20Z date_updated: 2025-02-07T11:29:15Z doi: 10.1515/cppm-2023-0054 issue: '0' keyword: - Modeling and Simulation - General Chemical Engineering language: - iso: eng publication: Chemical Product and Process Modeling publication_identifier: issn: - 1934-2659 publication_status: published publisher: Walter de Gruyter GmbH quality_controlled: '1' status: public title: A new approach to model the fluid dynamics in sandwich packings type: journal_article user_id: '93922' volume: '0' year: '2023' ... --- _id: '47009' abstract: - lang: eng text: We present a fully integrated radio frequency identifications transponder chip operating at 5.8 GHz, which is compatible with the class-1 generation-2 of the Electronic Product Code protocol (EPC-C1 G2). The tag chip including the analog front-end and the digital baseband processor, are designed in the sub-threshold regime (0.5 V) with a total supply current of less than 50 μA. As a power scavenging unit, a single-stage differential-drive rectifier structure is designed and fabricated with standard threshold voltage (SVT) MOS elements in a commercial 65-nm CMOS process, to provide 0.8 V of rectified voltage. Measurements performed on the fabricated single-stage structure show a maximum power conversion efficiency of 69.6% for a 22 kΩ load and a sensitivity of -12.5 dBm, which corresponds to more than 1 m of reading range. The power conversion efficiency at this range is about 64%. author: - first_name: Sanaz full_name: Haddadian, Sanaz id: '59648' last_name: Haddadian - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: '0000-0002-5950-6618 ' - first_name: Gerd full_name: von Bögel, Gerd last_name: von Bögel - first_name: Thorben full_name: Grenter, Thorben last_name: Grenter citation: ama: Haddadian S, Scheytt JC, von Bögel G, Grenter T. A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology. IEEE Journal of Radio Frequency Identification. Published online 2023. doi:10.1109/JRFID.2023.3308332 apa: Haddadian, S., Scheytt, J. C., von Bögel, G., & Grenter, T. (2023). A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology. IEEE Journal of Radio Frequency Identification. https://doi.org/10.1109/JRFID.2023.3308332 bibtex: '@article{Haddadian_Scheytt_von Bögel_Grenter_2023, title={A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology}, DOI={10.1109/JRFID.2023.3308332}, journal={ IEEE Journal of Radio Frequency Identification}, publisher={IEEE}, author={Haddadian, Sanaz and Scheytt, J. Christoph and von Bögel, Gerd and Grenter, Thorben}, year={2023} }' chicago: Haddadian, Sanaz, J. Christoph Scheytt, Gerd von Bögel, and Thorben Grenter. “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology.” IEEE Journal of Radio Frequency Identification, 2023. https://doi.org/10.1109/JRFID.2023.3308332. ieee: 'S. Haddadian, J. C. Scheytt, G. von Bögel, and T. Grenter, “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology,” IEEE Journal of Radio Frequency Identification, 2023, doi: 10.1109/JRFID.2023.3308332.' mla: Haddadian, Sanaz, et al. “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology.” IEEE Journal of Radio Frequency Identification, IEEE, 2023, doi:10.1109/JRFID.2023.3308332. short: S. Haddadian, J.C. Scheytt, G. von Bögel, T. Grenter, IEEE Journal of Radio Frequency Identification (2023). conference: start_date: 2023-08-29 date_created: 2023-09-13T11:08:22Z date_updated: 2025-02-13T14:24:24Z department: - _id: '58' doi: 10.1109/JRFID.2023.3308332 language: - iso: eng publication: ' IEEE Journal of Radio Frequency Identification' publication_identifier: eissn: - 2469-7281 publication_status: published publisher: IEEE status: public title: A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology type: journal_article user_id: '59648' year: '2023' ... --- _id: '46426' abstract: - lang: eng text: 'One of the main challenges for next generation automotive radars is the improvement of angular resolution to a sub-degree level. In this context, wide aperture automotive radars of 1m length or more and resolution close to 0.1° in azimuth and 0.5° in elevation could be beneficial. To enable coherent processing of arrays with such large aperture, prior (i.e offline) and online calibration are necessary: channel imbalances (gains and phases) and three dimensional coordinates of transmit and receive elements need to be determined. We propose a calibration strategy based on alternating steps between the two subtasks of i) channel imbalance estimation with ‘known’ array positions, by applying a singular value decomposition to the resulting tensor calculus problem; and ii) antenna position estimation with ’known’ channel imbalances, by numerically maximizing the Bayesian posterior probability; in both cases operating on range/Doppler snapshots of disjoint targets (with potentially unknown locations). Simulation studies based on the parameters of a MIMO 8x6 linear sparse array show promising results as long as the initial position errors do not exceed half a wavelength (2mm), beyond which we observe strong effects of ambiguity. Experimental results with real measurements show that after calibration in laboratory conditions, our MIMO 8x6 demonstrator with 50cm aperture is able to resolve two targets at the same range with angular separation at least as close as 0.4°.' author: - first_name: 'Christian ' full_name: 'Greiff, Christian ' last_name: Greiff - first_name: David full_name: Mateos-Núñez, David last_name: Mateos-Núñez - first_name: Renato full_name: Simoni, Renato last_name: Simoni - first_name: Maria full_name: González-Huici, Maria last_name: González-Huici - first_name: Stephan full_name: Kruse, Stephan id: '38254' last_name: Kruse - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: '0000-0002-5950-6618 ' - first_name: Karl full_name: Kolk, Karl last_name: Kolk - first_name: Christian full_name: Höller, Christian last_name: Höller - first_name: Heiko Gustav full_name: Kurz, Heiko Gustav last_name: Kurz - first_name: Marc-Michael full_name: Meinecke, Marc-Michael last_name: Meinecke - first_name: Thomas full_name: Gisder, Thomas last_name: Gisder citation: ama: 'Greiff C, Mateos-Núñez D, Simoni R, et al. Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions. In: 2023 24th International Radar Symposium (IRS). IEEE; 2023. doi:10.23919/IRS57608.2023.10172475' apa: 'Greiff, C., Mateos-Núñez, D., Simoni, R., González-Huici, M., Kruse, S., Scheytt, J. C., Kolk, K., Höller, C., Kurz, H. G., Meinecke, M.-M., & Gisder, T. (2023). Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions. 2023 24th International Radar Symposium (IRS). 2023 24th International Radar Symposium (IRS), Berlin, Germany. https://doi.org/10.23919/IRS57608.2023.10172475' bibtex: '@inproceedings{Greiff_Mateos-Núñez_Simoni_González-Huici_Kruse_Scheytt_Kolk_Höller_Kurz_Meinecke_et al._2023, title={Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions}, DOI={10.23919/IRS57608.2023.10172475}, booktitle={2023 24th International Radar Symposium (IRS)}, publisher={IEEE}, author={Greiff, Christian and Mateos-Núñez, David and Simoni, Renato and González-Huici, Maria and Kruse, Stephan and Scheytt, J. Christoph and Kolk, Karl and Höller, Christian and Kurz, Heiko Gustav and Meinecke, Marc-Michael and et al.}, year={2023} }' chicago: 'Greiff, Christian , David Mateos-Núñez, Renato Simoni, Maria González-Huici, Stephan Kruse, J. Christoph Scheytt, Karl Kolk, et al. “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions.” In 2023 24th International Radar Symposium (IRS). IEEE, 2023. https://doi.org/10.23919/IRS57608.2023.10172475.' ieee: 'C. Greiff et al., “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions,” presented at the 2023 24th International Radar Symposium (IRS), Berlin, Germany, 2023, doi: 10.23919/IRS57608.2023.10172475.' mla: 'Greiff, Christian, et al. “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions.” 2023 24th International Radar Symposium (IRS), IEEE, 2023, doi:10.23919/IRS57608.2023.10172475.' short: 'C. Greiff, D. Mateos-Núñez, R. Simoni, M. González-Huici, S. Kruse, J.C. Scheytt, K. Kolk, C. Höller, H.G. Kurz, M.-M. Meinecke, T. Gisder, in: 2023 24th International Radar Symposium (IRS), IEEE, 2023.' conference: end_date: 2023.05.26 location: Berlin, Germany name: 2023 24th International Radar Symposium (IRS) start_date: 2023.05.24 date_created: 2023-08-07T06:45:11Z date_updated: 2025-02-25T05:52:16Z department: - _id: '58' doi: 10.23919/IRS57608.2023.10172475 language: - iso: eng publication: 2023 24th International Radar Symposium (IRS) publication_identifier: eisbn: - 978-3-944976-34-1 publisher: IEEE status: public title: 'Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions' type: conference user_id: '38254' year: '2023' ... --- _id: '47124' author: - first_name: Stephan full_name: Kruse, Stephan id: '38254' last_name: Kruse - first_name: Marc-Michael full_name: Meinecke, Marc-Michael last_name: Meinecke - first_name: Pascal full_name: Kneuper, Pascal id: '47367' last_name: Kneuper - first_name: Tobias full_name: Schwabe, Tobias id: '39217' last_name: Schwabe - first_name: Heiko G. full_name: Kurz, Heiko G. last_name: Kurz - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: '0000-0002-5950-6618 ' citation: ama: 'Kruse S, Meinecke M-M, Kneuper P, Schwabe T, Kurz HG, Scheytt JC. Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO. In: 2023 20th European Radar Conference (EuRAD). ; 2023. doi:10.23919/EuRAD58043.2023.10289439' apa: Kruse, S., Meinecke, M.-M., Kneuper, P., Schwabe, T., Kurz, H. G., & Scheytt, J. C. (2023). Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO. 2023 20th European Radar Conference (EuRAD). https://doi.org/10.23919/EuRAD58043.2023.10289439 bibtex: '@inproceedings{Kruse_Meinecke_Kneuper_Schwabe_Kurz_Scheytt_2023, title={Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO}, DOI={10.23919/EuRAD58043.2023.10289439}, booktitle={2023 20th European Radar Conference (EuRAD)}, author={Kruse, Stephan and Meinecke, Marc-Michael and Kneuper, Pascal and Schwabe, Tobias and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }' chicago: Kruse, Stephan, Marc-Michael Meinecke, Pascal Kneuper, Tobias Schwabe, Heiko G. Kurz, and J. Christoph Scheytt. “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO.” In 2023 20th European Radar Conference (EuRAD), 2023. https://doi.org/10.23919/EuRAD58043.2023.10289439. ieee: 'S. Kruse, M.-M. Meinecke, P. Kneuper, T. Schwabe, H. G. Kurz, and J. C. Scheytt, “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO,” Berlin, 2023, doi: 10.23919/EuRAD58043.2023.10289439.' mla: Kruse, Stephan, et al. “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO.” 2023 20th European Radar Conference (EuRAD), 2023, doi:10.23919/EuRAD58043.2023.10289439. short: 'S. Kruse, M.-M. Meinecke, P. Kneuper, T. Schwabe, H.G. Kurz, J.C. Scheytt, in: 2023 20th European Radar Conference (EuRAD), 2023.' conference: end_date: 2023-09-22 location: Berlin start_date: 2023-09-20 date_created: 2023-09-19T06:46:12Z date_updated: 2025-02-25T05:51:57Z department: - _id: '58' doi: 10.23919/EuRAD58043.2023.10289439 language: - iso: eng publication: 2023 20th European Radar Conference (EuRAD) status: public title: Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO type: conference user_id: '38254' year: '2023' ... --- _id: '42804' abstract: - lang: eng text: "This paper presents a method to model monolithically integrated photonic radar transceiver (TRX) with optical local oscillator (LO) distribution in silicon germanium (SiGe) electronic photonic integrated circuits (EPICs). The model proposed approximates the behavior of the nonlinear scattering (S)-parameters and noise figure of each building block of the TRX chipset by Laplace polynomials and hyperbolic tangent functions. The modular approach of the model allows to optimize hardware components with respect to the entire TRX system, and fault identification with reduced computational effort.\r\nThe proposed method is validated using the first monolithically integrated photonic radar transceiver chipset and shows excellent agreement with the post layout simulation results and, including the photodiode (PD) bandwidth (BW) degradation, also with the measurements.\r\n" author: - first_name: Stephan full_name: Kruse, Stephan id: '38254' last_name: Kruse - first_name: Tobias full_name: Schwabe, Tobias id: '39217' last_name: Schwabe - first_name: Pascal full_name: Kneuper, Pascal id: '47367' last_name: Kneuper - first_name: Marc-Michael full_name: Meinecke, Marc-Michael last_name: Meinecke - first_name: Heiko G. full_name: Kurz, Heiko G. last_name: Kurz - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: https://orcid.org/0000-0002-5950-6618 citation: ama: 'Kruse S, Schwabe T, Kneuper P, Meinecke M-M, Kurz HG, Scheytt JC. Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. In: ; 2023. doi:10.23919/IRS57608.2023.10172395' apa: Kruse, S., Schwabe, T., Kneuper, P., Meinecke, M.-M., Kurz, H. G., & Scheytt, J. C. (2023). Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany. https://doi.org/10.23919/IRS57608.2023.10172395 bibtex: '@inproceedings{Kruse_Schwabe_Kneuper_Meinecke_Kurz_Scheytt_2023, title={Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications}, DOI={10.23919/IRS57608.2023.10172395}, author={Kruse, Stephan and Schwabe, Tobias and Kneuper, Pascal and Meinecke, Marc-Michael and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }' chicago: Kruse, Stephan, Tobias Schwabe, Pascal Kneuper, Marc-Michael Meinecke, Heiko G. Kurz, and J. Christoph Scheytt. “Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications,” 2023. https://doi.org/10.23919/IRS57608.2023.10172395. ieee: 'S. Kruse, T. Schwabe, P. Kneuper, M.-M. Meinecke, H. G. Kurz, and J. C. Scheytt, “Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications,” presented at the INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany, 2023, doi: 10.23919/IRS57608.2023.10172395.' mla: Kruse, Stephan, et al. Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. 2023, doi:10.23919/IRS57608.2023.10172395. short: 'S. Kruse, T. Schwabe, P. Kneuper, M.-M. Meinecke, H.G. Kurz, J.C. Scheytt, in: 2023.' conference: end_date: 2023.05.26 location: Fraunhofer-Forum Berlin, Germany name: INTERNATIONAL RADAR SYMPOSIUM (IRS 2023) start_date: 2023.05.24 date_created: 2023-03-07T08:55:33Z date_updated: 2025-02-25T05:53:22Z department: - _id: '58' - _id: '230' doi: 10.23919/IRS57608.2023.10172395 language: - iso: eng status: public title: Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications type: conference user_id: '38254' year: '2023' ... --- _id: '47064' author: - first_name: Mohammed full_name: Iftekhar, Mohammed id: '47944' last_name: Iftekhar - first_name: Harshan full_name: Nagaraju, Harshan last_name: Nagaraju - first_name: Pascal full_name: Kneuper, Pascal id: '47367' last_name: Kneuper - first_name: Babak full_name: Sadiye, Babak id: '93634' last_name: Sadiye - first_name: Wolfgang full_name: Müller, Wolfgang id: '16243' last_name: Müller - first_name: J. Christoph full_name: Scheytt, J. Christoph id: '37144' last_name: Scheytt orcid: '0000-0002-5950-6618 ' citation: ama: 'Iftekhar M, Nagaraju H, Kneuper P, Sadiye B, Müller W, Scheytt JC. A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology . In: BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium. ; 2023.' apa: Iftekhar, M., Nagaraju, H., Kneuper, P., Sadiye, B., Müller, W., & Scheytt, J. C. (2023). A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology . BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium. bibtex: '@inproceedings{Iftekhar_Nagaraju_Kneuper_Sadiye_Müller_Scheytt_2023, title={A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology }, booktitle={BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium}, author={Iftekhar, Mohammed and Nagaraju, Harshan and Kneuper, Pascal and Sadiye, Babak and Müller, Wolfgang and Scheytt, J. Christoph}, year={2023} }' chicago: Iftekhar, Mohammed, Harshan Nagaraju, Pascal Kneuper, Babak Sadiye, Wolfgang Müller, and J. Christoph Scheytt. “A 28-Gb/s 27.2 MW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 Nm FD-SOI CMOS Technology .” In BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023. ieee: M. Iftekhar, H. Nagaraju, P. Kneuper, B. Sadiye, W. Müller, and J. C. Scheytt, “A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology ,” MONTEREY, CALIFORNIA, USA, 2023. mla: Iftekhar, Mohammed, et al. “A 28-Gb/s 27.2 MW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 Nm FD-SOI CMOS Technology .” BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023. short: 'M. Iftekhar, H. Nagaraju, P. Kneuper, B. Sadiye, W. Müller, J.C. Scheytt, in: BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023.' conference: end_date: 2023-10-18 location: MONTEREY, CALIFORNIA, USA start_date: 2023-10-15 date_created: 2023-09-14T11:30:36Z date_updated: 2025-02-26T14:41:53Z department: - _id: '58' language: - iso: eng publication: BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium related_material: link: - relation: contains url: https://bcicts.org/ status: public title: 'A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology ' type: conference_abstract user_id: '15931' year: '2023' ... --- _id: '60355' abstract: - lang: eng text: We present a method for the generation of higher-order tetrahedral meshes. In contrast to previous methods, the curved tetrahedral elements are guaranteed to be free of degeneracies and inversions while conforming exactly to prescribed piecewise polynomial surfaces, such as domain boundaries or material interfaces. Arbitrary polynomial order is supported. Algorithmically, the polynomial input surfaces are first covered by a single layer of carefully constructed curved elements using a recursive refinement procedure that provably avoids degeneracies and inversions. These tetrahedral elements are designed such that the remaining space is bounded piecewise linearly. In this way, our method effectively reduces the curved meshing problem to the classical problem of linear mesh generation (for the remaining space). author: - first_name: Payam full_name: Khanteimouri, Payam last_name: Khanteimouri - first_name: Marcel full_name: Campen, Marcel id: '114904' last_name: Campen orcid: 0000-0003-2340-3462 citation: ama: 'Khanteimouri P, Campen M. 3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing. ACM Transactions on Graphics. 2023;42(6):1-19. doi:10.1145/3618332' apa: 'Khanteimouri, P., & Campen, M. (2023). 3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing. ACM Transactions on Graphics, 42(6), 1–19. https://doi.org/10.1145/3618332' bibtex: '@article{Khanteimouri_Campen_2023, title={3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing}, volume={42}, DOI={10.1145/3618332}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Khanteimouri, Payam and Campen, Marcel}, year={2023}, pages={1–19} }' chicago: 'Khanteimouri, Payam, and Marcel Campen. “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing.” ACM Transactions on Graphics 42, no. 6 (2023): 1–19. https://doi.org/10.1145/3618332.' ieee: 'P. Khanteimouri and M. Campen, “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing,” ACM Transactions on Graphics, vol. 42, no. 6, pp. 1–19, 2023, doi: 10.1145/3618332.' mla: 'Khanteimouri, Payam, and Marcel Campen. “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing.” ACM Transactions on Graphics, vol. 42, no. 6, Association for Computing Machinery (ACM), 2023, pp. 1–19, doi:10.1145/3618332.' short: P. Khanteimouri, M. Campen, ACM Transactions on Graphics 42 (2023) 1–19. date_created: 2025-06-24T07:46:53Z date_updated: 2025-07-14T12:46:54Z department: - _id: '969' doi: 10.1145/3618332 extern: '1' intvolume: ' 42' issue: '6' language: - iso: eng page: 1-19 publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 - 1557-7368 publication_status: published publisher: Association for Computing Machinery (ACM) status: public title: '3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing' type: journal_article user_id: '117512' volume: 42 year: '2023' ... --- _id: '60354' abstract: - lang: eng text: We present a set of operators to perform modifications, in particular collapses and splits, in volumetric cell complexes which are discretely embedded in a background mesh. Topological integrity and geometric embedding validity are carefully maintained. We apply these operators strategically to volumetric block decompositions, so-called T-meshes or base complexes, in the context of hexahedral mesh generation. This allows circumventing the expensive and unreliable global volumetric remapping step in the versatile meshing pipeline based on 3D integer-grid maps. In essence, we reduce this step to simpler local cube mapping problems, for which reliable solutions are available. As a consequence, the robustness of the mesh generation process is increased, especially when targeting coarse or block-structured hexahedral meshes. We furthermore extend this pipeline to support feature alignment constraints, and systematically respect these throughout, enabling the generation of meshes that align to points, curves, and surfaces of special interest, whether on the boundary or in the interior of the domain. author: - first_name: Hendrik full_name: Brückler, Hendrik id: '115694' last_name: Brückler - first_name: Marcel full_name: Campen, Marcel id: '114904' last_name: Campen orcid: 0000-0003-2340-3462 citation: ama: Brückler H, Campen M. Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing. ACM Transactions on Graphics. 2023;42(6):1-24. doi:10.1145/3618384 apa: Brückler, H., & Campen, M. (2023). Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing. ACM Transactions on Graphics, 42(6), 1–24. https://doi.org/10.1145/3618384 bibtex: '@article{Brückler_Campen_2023, title={Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing}, volume={42}, DOI={10.1145/3618384}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Brückler, Hendrik and Campen, Marcel}, year={2023}, pages={1–24} }' chicago: 'Brückler, Hendrik, and Marcel Campen. “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing.” ACM Transactions on Graphics 42, no. 6 (2023): 1–24. https://doi.org/10.1145/3618384.' ieee: 'H. Brückler and M. Campen, “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing,” ACM Transactions on Graphics, vol. 42, no. 6, pp. 1–24, 2023, doi: 10.1145/3618384.' mla: Brückler, Hendrik, and Marcel Campen. “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing.” ACM Transactions on Graphics, vol. 42, no. 6, Association for Computing Machinery (ACM), 2023, pp. 1–24, doi:10.1145/3618384. short: H. Brückler, M. Campen, ACM Transactions on Graphics 42 (2023) 1–24. date_created: 2025-06-24T07:45:44Z date_updated: 2025-07-14T12:47:30Z department: - _id: '969' doi: 10.1145/3618384 extern: '1' intvolume: ' 42' issue: '6' language: - iso: eng page: 1-24 publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 - 1557-7368 publication_status: published publisher: Association for Computing Machinery (ACM) status: public title: Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing type: journal_article user_id: '117512' volume: 42 year: '2023' ... --- _id: '60335' abstract: - lang: eng text: A method is presented to compute volumetric maps and parametrizations of objects over 3D domains. As a key feature, continuity and bijectivity are ensured by construction. Arbitrary objects of ball topology, represented as tetrahedral meshes, are supported. Arbitrary convex as well as star-shaped domains are supported. Full control over the boundary mapping is provided. The method is based on the technique of simplicial foliations, generalized to a broader class of domain shapes and applied adaptively in a novel localized manner. This increases flexibility as well as efficiency over the state of the art, while maintaining reliability in guaranteeing map bijectivity. author: - first_name: Steffen full_name: Hinderink, Steffen id: '116615' last_name: Hinderink - first_name: Marcel full_name: Campen, Marcel id: '114904' last_name: Campen orcid: 0000-0003-2340-3462 citation: ama: 'Hinderink S, Campen M. Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping. ACM Transactions on Graphics. 2023;42(4):1-16. doi:10.1145/3592410' apa: 'Hinderink, S., & Campen, M. (2023). Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping. ACM Transactions on Graphics, 42(4), 1–16. https://doi.org/10.1145/3592410' bibtex: '@article{Hinderink_Campen_2023, title={Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping}, volume={42}, DOI={10.1145/3592410}, number={4}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Hinderink, Steffen and Campen, Marcel}, year={2023}, pages={1–16} }' chicago: 'Hinderink, Steffen, and Marcel Campen. “Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping.” ACM Transactions on Graphics 42, no. 4 (2023): 1–16. https://doi.org/10.1145/3592410.' ieee: 'S. Hinderink and M. Campen, “Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping,” ACM Transactions on Graphics, vol. 42, no. 4, pp. 1–16, 2023, doi: 10.1145/3592410.' mla: 'Hinderink, Steffen, and Marcel Campen. “Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping.” ACM Transactions on Graphics, vol. 42, no. 4, Association for Computing Machinery (ACM), 2023, pp. 1–16, doi:10.1145/3592410.' short: S. Hinderink, M. Campen, ACM Transactions on Graphics 42 (2023) 1–16. date_created: 2025-06-23T10:38:02Z date_updated: 2025-07-14T12:48:12Z department: - _id: '969' doi: 10.1145/3592410 extern: '1' intvolume: ' 42' issue: '4' language: - iso: eng page: 1-16 publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 - 1557-7368 publication_status: published publisher: Association for Computing Machinery (ACM) status: public title: 'Galaxy Maps: Localized Foliations for Bijective Volumetric Mapping' type: journal_article user_id: '117512' volume: 42 year: '2023' ... --- _id: '48012' abstract: - lang: eng text: '3D printing is a well-established technology with rapidly increasing usage scenarios both in the industry and consumer context. The growing popularity of 3D printing has also attracted security researchers, who have analyzed possibilities for weakening 3D models or stealing intellectual property from 3D models. We extend these important aspects and provide the first comprehensive security analysis of 3D printing data formats. We performed our systematic study on the example of the 3D Manufacturing Format (3MF), which offers a large variety of features that could lead to critical attacks. Based on 3MF’s features, we systematized three attack goals: Data Exfiltration (dex), Denial of Service, and UI Spoofing (uis). We achieve these goals by exploiting the complexity of 3MF, which is based on the Open Packaging Conventions (OPC) format and uses XML to define 3D models. In total, our analysis led to 352 tests. To create and run these tests automatically, we implemented an open-source tool named 3MF Analyzer (tool), which helped us evaluate 20 applications.' author: - first_name: Jost full_name: Rossel, Jost id: '58331' last_name: Rossel orcid: 0000-0002-3182-4059 - first_name: Vladislav full_name: Mladenov, Vladislav last_name: Mladenov - first_name: Juraj full_name: Somorovsky, Juraj id: '83504' last_name: Somorovsky orcid: 0000-0002-3593-7720 citation: ama: 'Rossel J, Mladenov V, Somorovsky J. Security Analysis of the 3MF Data Format. In: Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses. ACM; 2023. doi:10.1145/3607199.3607216' apa: Rossel, J., Mladenov, V., & Somorovsky, J. (2023). Security Analysis of the 3MF Data Format. Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses. 26th International Symposium on Research in Attacks, Intrusions and Defenses, Hongkong. https://doi.org/10.1145/3607199.3607216 bibtex: '@inproceedings{Rossel_Mladenov_Somorovsky_2023, title={Security Analysis of the 3MF Data Format}, DOI={10.1145/3607199.3607216}, booktitle={Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses}, publisher={ACM}, author={Rossel, Jost and Mladenov, Vladislav and Somorovsky, Juraj}, year={2023} }' chicago: Rossel, Jost, Vladislav Mladenov, and Juraj Somorovsky. “Security Analysis of the 3MF Data Format.” In Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses. ACM, 2023. https://doi.org/10.1145/3607199.3607216. ieee: 'J. Rossel, V. Mladenov, and J. Somorovsky, “Security Analysis of the 3MF Data Format,” presented at the 26th International Symposium on Research in Attacks, Intrusions and Defenses, Hongkong, 2023, doi: 10.1145/3607199.3607216.' mla: Rossel, Jost, et al. “Security Analysis of the 3MF Data Format.” Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses, ACM, 2023, doi:10.1145/3607199.3607216. short: 'J. Rossel, V. Mladenov, J. Somorovsky, in: Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses, ACM, 2023.' conference: end_date: 2023-10-18 location: Hongkong name: 26th International Symposium on Research in Attacks, Intrusions and Defenses start_date: 2023-10-16 date_created: 2023-10-11T13:42:09Z date_updated: 2025-07-16T11:06:49Z ddc: - '000' department: - _id: '632' doi: 10.1145/3607199.3607216 file: - access_level: open_access content_type: application/pdf creator: jrossel date_created: 2023-10-16T03:48:08Z date_updated: 2024-09-05T11:14:40Z file_id: '48065' file_name: Security_Analysis_of_the_3mf_Data_Format.pdf file_size: 1054999 relation: main_file file_date_updated: 2024-09-05T11:14:40Z has_accepted_license: '1' keyword: - Data Format Security - 3D Manufacturing Format - 3D Printing - Additive Manufacturing language: - iso: eng main_file_link: - url: https://dl.acm.org/doi/abs/10.1145/3607199.3607216 oa: '1' publication: Proceedings of the 26th International Symposium on Research in Attacks, Intrusions and Defenses publication_status: published publisher: ACM quality_controlled: '1' status: public title: Security Analysis of the 3MF Data Format type: conference user_id: '58331' year: '2023' ... --- _id: '45360' alternative_title: - Implementation of optimized surface slitting for eddy current loss reduction on the surface of an additively manufactured pemanent magnet rotor author: - first_name: Michael full_name: Haase, Michael id: '35970' last_name: Haase - first_name: Maximilian full_name: Bieber, Maximilian last_name: Bieber - first_name: Frederik full_name: Tasche, Frederik last_name: Tasche - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Bernd full_name: Ponik, Bernd last_name: Ponik - first_name: Balázs full_name: Magyar, Balázs id: '97759' last_name: Magyar citation: ama: 'Haase M, Bieber M, Tasche F, et al. Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors. In: Kynast M, Eichmann M, Witt G, eds. Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023. Carl Hanser Verlag GmbH & Co. KG; 2023. doi:https://doi.org/10.3139/9783446479425.001 ' apa: Haase, M., Bieber, M., Tasche, F., Schaper, M., Hoyer, K.-P., Ponik, B., & Magyar, B. (2023). Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors. In M. Kynast, M. Eichmann, & G. Witt (Eds.), Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023. Carl Hanser Verlag GmbH & Co. KG. https://doi.org/10.3139/9783446479425.001 bibtex: '@inbook{Haase_Bieber_Tasche_Schaper_Hoyer_Ponik_Magyar_2023, place={München}, title={Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors}, DOI={https://doi.org/10.3139/9783446479425.001 }, booktitle={Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023}, publisher={Carl Hanser Verlag GmbH & Co. KG}, author={Haase, Michael and Bieber, Maximilian and Tasche, Frederik and Schaper, Mirko and Hoyer, Kay-Peter and Ponik, Bernd and Magyar, Balázs}, editor={Kynast, Michael and Eichmann, Michael and Witt, Gerd}, year={2023} }' chicago: 'Haase, Michael, Maximilian Bieber, Frederik Tasche, Mirko Schaper, Kay-Peter Hoyer, Bernd Ponik, and Balázs Magyar. “Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors.” In Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023, edited by Michael Kynast, Michael Eichmann, and Gerd Witt. München: Carl Hanser Verlag GmbH & Co. KG, 2023. https://doi.org/10.3139/9783446479425.001 .' ieee: 'M. Haase et al., “Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors,” in Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023, M. Kynast, M. Eichmann, and G. Witt, Eds. München: Carl Hanser Verlag GmbH & Co. KG, 2023.' mla: Haase, Michael, et al. “Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors.” Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023, edited by Michael Kynast et al., Carl Hanser Verlag GmbH & Co. KG, 2023, doi:https://doi.org/10.3139/9783446479425.001 . short: 'M. Haase, M. Bieber, F. Tasche, M. Schaper, K.-P. Hoyer, B. Ponik, B. Magyar, in: M. Kynast, M. Eichmann, G. Witt (Eds.), Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023, Carl Hanser Verlag GmbH & Co. KG, München, 2023.' date_created: 2023-05-30T05:55:15Z date_updated: 2025-08-29T09:19:53Z department: - _id: '146' - _id: '219' - _id: '158' doi: 'https://doi.org/10.3139/9783446479425.001 ' editor: - first_name: Michael full_name: Kynast, Michael last_name: Kynast - first_name: Michael full_name: Eichmann, Michael last_name: Eichmann - first_name: Gerd full_name: Witt, Gerd last_name: Witt language: - iso: ger place: München popular_science: '1' publication: Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023 publication_identifier: eisbn: - 978-3-446-47942-5 isbn: - 978-3-446-47941-8 publication_status: published publisher: Carl Hanser Verlag GmbH & Co. KG status: public title: Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors type: book_chapter user_id: '35970' year: '2023' ... --- _id: '52865' abstract: - lang: eng text: This paper addresses new challenges of detecting campaigns in social media, which emerged with the rise of Large Language Models (LLMs). LLMs particularly challenge algorithms focused on the temporal analysis of topical clusters. Simple similarity measures can no longer capture and map campaigns that were previously broadly similar in content. Herein, we analyze whether the classification of messages over time can be profitably used to rediscover poorly detectable campaigns at the content level. Thus, we evaluate classical classifiers and a new method based on siamese neural networks. Our results show that campaigns can be detected despite the limited reliability of the classifiers as long as they are based on a large amount of simultaneously spread artificial content. author: - first_name: Britta full_name: Grimme, Britta last_name: Grimme - first_name: Janina full_name: Pohl, Janina last_name: Pohl - first_name: Hendrik full_name: Winkelmann, Hendrik last_name: Winkelmann - first_name: Lucas full_name: Stampe, Lucas last_name: Stampe - first_name: Christian full_name: Grimme, Christian last_name: Grimme citation: ama: 'Grimme B, Pohl J, Winkelmann H, Stampe L, Grimme C. Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media. In: Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings. Springer-Verlag; 2023:72–87. doi:10.1007/978-3-031-47896-3_6' apa: 'Grimme, B., Pohl, J., Winkelmann, H., Stampe, L., & Grimme, C. (2023). Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media. Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings, 72–87. https://doi.org/10.1007/978-3-031-47896-3_6' bibtex: '@inproceedings{Grimme_Pohl_Winkelmann_Stampe_Grimme_2023, place={Berlin, Heidelberg}, title={Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media}, DOI={10.1007/978-3-031-47896-3_6}, booktitle={Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings}, publisher={Springer-Verlag}, author={Grimme, Britta and Pohl, Janina and Winkelmann, Hendrik and Stampe, Lucas and Grimme, Christian}, year={2023}, pages={72–87} }' chicago: 'Grimme, Britta, Janina Pohl, Hendrik Winkelmann, Lucas Stampe, and Christian Grimme. “Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media.” In Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings, 72–87. Berlin, Heidelberg: Springer-Verlag, 2023. https://doi.org/10.1007/978-3-031-47896-3_6.' ieee: 'B. Grimme, J. Pohl, H. Winkelmann, L. Stampe, and C. Grimme, “Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media,” in Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings, 2023, pp. 72–87, doi: 10.1007/978-3-031-47896-3_6.' mla: 'Grimme, Britta, et al. “Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media.” Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings, Springer-Verlag, 2023, pp. 72–87, doi:10.1007/978-3-031-47896-3_6.' short: 'B. Grimme, J. Pohl, H. Winkelmann, L. Stampe, C. Grimme, in: Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings, Springer-Verlag, Berlin, Heidelberg, 2023, pp. 72–87.' date_created: 2024-03-25T14:38:01Z date_updated: 2026-03-19T07:48:51Z doi: 10.1007/978-3-031-47896-3_6 keyword: - Social Media - Campaign Detection - Large Language Models - Siamese Neural Networks page: 72–87 place: Berlin, Heidelberg publication: 'Disinformation in Open Online Media: 5th Multidisciplinary International Symposium, MISDOOM 2023, Amsterdam, The Netherlands, November 21–22, 2023, Proceedings' publication_identifier: isbn: - 978-3-031-47895-6 publisher: Springer-Verlag status: public title: 'Lost in Transformation: Rediscovering LLM-Generated Campaigns in Social Media' type: conference user_id: '103682' year: '2023' ... --- _id: '43090' abstract: - lang: eng text: 'The application of the mechanical joining process clinching allows the assembly of different sheet metal materials with a wide range of material thickness configurations, which is of interest for lightweight multi-material structures. In order to be able to predict the clinched joint properties as a function of the individual manufacturing steps, current studies focus on numerical modeling of the entire clinching process chain. It is essential to be able to take into account the influence of the joining process-induced damage on the load-bearing capacity of the joint during the loading phase. This study presents a numerical damage accumulation in the clinching process based on an implemented Hosford-Coulomb failure model using a 3D clinching process model applied on the aluminum alloy EN AW-6014 in temper T4. A correspondence of the experimentally determined failure location with the element of the highest numerically determined damage accumulation is shown. Moreover, the experimentally determined failure behavior is predicted to be in agreement in the numerical loading simulation with transferred pre-damage from the process simulation. ' author: - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Johannes full_name: Friedlein, Johannes last_name: Friedlein - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Julia full_name: Mergheim, Julia last_name: Mergheim - first_name: Paul full_name: Steinmann, Paul last_name: Steinmann - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Bielak CR, Böhnke M, Friedlein J, et al. Numerical analysis of failure modeling in clinching process chain simulation. In: Materials Research Proceedings. Materials Research Forum LLC; 2023. doi:10.21741/9781644902417-33' apa: Bielak, C. R., Böhnke, M., Friedlein, J., Bobbert, M., Mergheim, J., Steinmann, P., & Meschut, G. (2023). Numerical analysis of failure modeling in clinching process chain simulation. Materials Research Proceedings. SHEMET 2023. https://doi.org/10.21741/9781644902417-33 bibtex: '@inproceedings{Bielak_Böhnke_Friedlein_Bobbert_Mergheim_Steinmann_Meschut_2023, title={Numerical analysis of failure modeling in clinching process chain simulation}, DOI={10.21741/9781644902417-33}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Bielak, Christian Roman and Böhnke, Max and Friedlein, Johannes and Bobbert, Mathias and Mergheim, Julia and Steinmann, Paul and Meschut, Gerson}, year={2023} }' chicago: Bielak, Christian Roman, Max Böhnke, Johannes Friedlein, Mathias Bobbert, Julia Mergheim, Paul Steinmann, and Gerson Meschut. “Numerical Analysis of Failure Modeling in Clinching Process Chain Simulation.” In Materials Research Proceedings. Materials Research Forum LLC, 2023. https://doi.org/10.21741/9781644902417-33. ieee: 'C. R. Bielak et al., “Numerical analysis of failure modeling in clinching process chain simulation,” presented at the SHEMET 2023, 2023, doi: 10.21741/9781644902417-33.' mla: Bielak, Christian Roman, et al. “Numerical Analysis of Failure Modeling in Clinching Process Chain Simulation.” Materials Research Proceedings, Materials Research Forum LLC, 2023, doi:10.21741/9781644902417-33. short: 'C.R. Bielak, M. Böhnke, J. Friedlein, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.' conference: name: SHEMET 2023 date_created: 2023-03-23T08:13:30Z date_updated: 2026-05-12T13:27:10Z department: - _id: '157' doi: 10.21741/9781644902417-33 language: - iso: eng project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '139' name: 'TRR 285 – A05: TRR 285 - Subproject A05' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Numerical analysis of failure modeling in clinching process chain simulation type: conference user_id: '7850' year: '2023' ...