---
_id: '65239'
author:
- first_name: Jonas Dirk Rudolf Helmut
  full_name: Petzke, Jonas Dirk Rudolf Helmut
  id: '57512'
  last_name: Petzke
- first_name: Dennis
  full_name: Kleinschmidt, Dennis
  id: '40516'
  last_name: Kleinschmidt
- first_name: Florian
  full_name: Brüning, Florian
  id: '72920'
  last_name: Brüning
citation:
  ama: 'Petzke JDRH, Kleinschmidt D, Brüning F. Thermo-Chemical Devulcanization of
    Sulfur-cured Styrene-Butadiene Rubber (SBR) Using Diphenyldisulfide (DPDS). In:
    <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-Abstract Book</i>.
    ; 2025:185–186.'
  apa: Petzke, J. D. R. H., Kleinschmidt, D., &#38; Brüning, F. (2025). Thermo-Chemical
    Devulcanization of Sulfur-cured Styrene-Butadiene Rubber (SBR) Using Diphenyldisulfide
    (DPDS). In <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract
    book</i> (pp. 185–186).
  bibtex: '@inbook{Petzke_Kleinschmidt_Brüning_2025, title={Thermo-Chemical Devulcanization
    of Sulfur-cured Styrene-Butadiene Rubber (SBR) Using Diphenyldisulfide (DPDS)},
    booktitle={International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract
    book}, author={Petzke, Jonas Dirk Rudolf Helmut and Kleinschmidt, Dennis and Brüning,
    Florian}, year={2025}, pages={185–186} }'
  chicago: Petzke, Jonas Dirk Rudolf Helmut, Dennis Kleinschmidt, and Florian Brüning.
    “Thermo-Chemical Devulcanization of Sulfur-Cured Styrene-Butadiene Rubber (SBR)
    Using Diphenyldisulfide (DPDS).” In <i>International Rubber Conference (IRC) 2025,
    Bangkok, BITEC; e-Abstract Book</i>, 185–186, 2025.
  ieee: J. D. R. H. Petzke, D. Kleinschmidt, and F. Brüning, “Thermo-Chemical Devulcanization
    of Sulfur-cured Styrene-Butadiene Rubber (SBR) Using Diphenyldisulfide (DPDS),”
    in <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract book</i>,
    2025, pp. 185–186.
  mla: Petzke, Jonas Dirk Rudolf Helmut, et al. “Thermo-Chemical Devulcanization of
    Sulfur-Cured Styrene-Butadiene Rubber (SBR) Using Diphenyldisulfide (DPDS).” <i>International
    Rubber Conference (IRC) 2025, Bangkok, BITEC; e-Abstract Book</i>, 2025, pp. 185–186.
  short: 'J.D.R.H. Petzke, D. Kleinschmidt, F. Brüning, in: International Rubber Conference
    (IRC) 2025, Bangkok, BITEC; e-Abstract Book, 2025, pp. 185–186.'
date_created: 2026-03-30T13:58:30Z
date_updated: 2026-03-30T14:03:05Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
keyword:
- Devulkanisation
- Kautschuk
- Recycling
language:
- iso: eng
page: 185–186
publication: International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract
  book
quality_controlled: '1'
status: public
title: Thermo-Chemical Devulcanization of Sulfur-cured Styrene-Butadiene Rubber (SBR)
  Using Diphenyldisulfide (DPDS)
type: book_chapter
user_id: '59363'
year: '2025'
...
---
_id: '65241'
author:
- first_name: Timm
  full_name: Rempel, Timm
  id: '63257'
  last_name: Rempel
- first_name: Florian
  full_name: Brüning, Florian
  id: '72920'
  last_name: Brüning
citation:
  ama: Rempel T, Brüning F. Investigations into the specific throughput stability
    of conical feed zones over the rotation speed during the direct processing of
    polypropylene regrind. <i>ANTEC</i>. Published online 2025.
  apa: Rempel, T., &#38; Brüning, F. (2025). Investigations into the specific throughput
    stability of conical feed zones over the rotation speed during the direct processing
    of polypropylene regrind. <i>ANTEC</i>.
  bibtex: '@article{Rempel_Brüning_2025, title={Investigations into the specific throughput
    stability of conical feed zones over the rotation speed during the direct processing
    of polypropylene regrind}, journal={ANTEC}, author={Rempel, Timm and Brüning,
    Florian}, year={2025} }'
  chicago: Rempel, Timm, and Florian Brüning. “Investigations into the Specific Throughput
    Stability of Conical Feed Zones over the Rotation Speed during the Direct Processing
    of Polypropylene Regrind.” <i>ANTEC</i>, 2025.
  ieee: T. Rempel and F. Brüning, “Investigations into the specific throughput stability
    of conical feed zones over the rotation speed during the direct processing of
    polypropylene regrind,” <i>ANTEC</i>, 2025.
  mla: Rempel, Timm, and Florian Brüning. “Investigations into the Specific Throughput
    Stability of Conical Feed Zones over the Rotation Speed during the Direct Processing
    of Polypropylene Regrind.” <i>ANTEC</i>, 2025.
  short: T. Rempel, F. Brüning, ANTEC (2025).
date_created: 2026-03-30T13:58:31Z
date_updated: 2026-03-30T14:03:45Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
language:
- iso: eng
publication: ANTEC
status: public
title: Investigations into the specific throughput stability of conical feed zones
  over the rotation speed during the direct processing of polypropylene regrind
type: journal_article
user_id: '59363'
year: '2025'
...
---
_id: '65245'
author:
- first_name: Jonas Dirk Rudolf Helmut
  full_name: Petzke, Jonas Dirk Rudolf Helmut
  id: '57512'
  last_name: Petzke
citation:
  ama: 'Petzke JDRH. Devulcanization behavior of SBR-based GTR compounds. In: ; 2025.'
  apa: Petzke, J. D. R. H. (2025). <i>Devulcanization behavior of SBR-based GTR compounds</i>.
  bibtex: '@inproceedings{Petzke_2025, title={Devulcanization behavior of SBR-based
    GTR compounds}, author={Petzke, Jonas Dirk Rudolf Helmut}, year={2025} }'
  chicago: Petzke, Jonas Dirk Rudolf Helmut. “Devulcanization Behavior of SBR-Based
    GTR Compounds,” 2025.
  ieee: J. D. R. H. Petzke, “Devulcanization behavior of SBR-based GTR compounds,”
    2025.
  mla: Petzke, Jonas Dirk Rudolf Helmut. <i>Devulcanization Behavior of SBR-Based
    GTR Compounds</i>. 2025.
  short: 'J.D.R.H. Petzke, in: 2025.'
date_created: 2026-03-30T14:32:24Z
date_updated: 2026-03-30T14:32:32Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
language:
- iso: eng
status: public
title: Devulcanization behavior of SBR-based GTR compounds
type: conference
user_id: '59363'
year: '2025'
...
---
_id: '63753'
author:
- first_name: Julia
  full_name: Diederich, Julia
  id: '13796'
  last_name: Diederich
citation:
  ama: 'Diederich J. Rezension von: Julia Peuke: Was bleibt - die DDR aus der Perspektive
    von Kindern: eine qualitative Studie zum historisch-politischen Lernen im Sachunterricht,
    Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html.
    Published online 2025.'
  apa: 'Diederich, J. (2025). <i>Rezension von: Julia Peuke: Was bleibt - die DDR
    aus der Perspektive von Kindern: eine qualitative Studie zum historisch-politischen
    Lernen im Sachunterricht, Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html</i>.'
  bibtex: '@article{Diederich_2025, place={Sehepunkte 25 (2025), Nr. 7/8 [15.07.2025]},
    title={Rezension von: Julia Peuke: Was bleibt - die DDR aus der Perspektive von
    Kindern: eine qualitative Studie zum historisch-politischen Lernen im Sachunterricht,
    Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html},
    author={Diederich, Julia}, year={2025} }'
  chicago: 'Diederich, Julia. “Rezension von: Julia Peuke: Was bleibt - die DDR aus
    der Perspektive von Kindern: eine qualitative Studie zum historisch-politischen
    Lernen im Sachunterricht, Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html.”
    Sehepunkte 25 (2025), Nr. 7/8 [15.07.2025], 2025.'
  ieee: 'J. Diederich, “Rezension von: Julia Peuke: Was bleibt - die DDR aus der Perspektive
    von Kindern: eine qualitative Studie zum historisch-politischen Lernen im Sachunterricht,
    Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html.”
    Sehepunkte 25 (2025), Nr. 7/8 [15.07.2025], 2025.'
  mla: 'Diederich, Julia. <i>Rezension von: Julia Peuke: Was bleibt - die DDR aus
    der Perspektive von Kindern: eine qualitative Studie zum historisch-politischen
    Lernen im Sachunterricht, Heidelberg: Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html</i>.
    2025.'
  short: J. Diederich, (2025).
date_created: 2026-01-27T10:31:38Z
date_updated: 2026-03-31T06:59:55Z
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://www.sehepunkte.de/2025/07/39871.html
oa: '1'
place: Sehepunkte 25 (2025), Nr. 7/8 [15.07.2025]
publication_status: published
status: public
title: 'Rezension von: Julia Peuke: Was bleibt - die DDR aus der Perspektive von Kindern:
  eine qualitative Studie zum historisch-politischen Lernen im Sachunterricht, Heidelberg:
  Springer-Verlag 2024, in: URL: https://www.sehepunkte.de/2025/07/39871.html'
type: review
user_id: '13796'
year: '2025'
...
---
_id: '65259'
author:
- first_name: Nils Tobias
  full_name: Böer, Nils Tobias
  id: '52000'
  last_name: Böer
  orcid: 0000-0002-0236-7282
- first_name: Iris
  full_name: Güldenpenning, Iris
  id: '52931'
  last_name: Güldenpenning
  orcid: 0000-0003-0549-5543
- first_name: Matthias
  full_name: Weigelt, Matthias
  id: '36388'
  last_name: Weigelt
citation:
  ama: 'Böer NT, Güldenpenning I, Weigelt M. Differences of producing head fakes with
    and without a social partner. In: Lê-Hoa Võ M, Fiebach C, Shing YL, Sammler D,
    Windmann S, Kaiser J, eds. <i>67th Conference of Experimental Psychologists</i>.
    ; 2025:132.'
  apa: Böer, N. T., Güldenpenning, I., &#38; Weigelt, M. (2025). Differences of producing
    head fakes with and without a social partner. In M. Lê-Hoa Võ, C. Fiebach, Y.
    L. Shing, D. Sammler, S. Windmann, &#38; J. Kaiser (Eds.), <i>67th Conference
    of Experimental Psychologists</i> (p. 132).
  bibtex: '@inproceedings{Böer_Güldenpenning_Weigelt_2025, title={Differences of producing
    head fakes with and without a social partner}, booktitle={67th Conference of Experimental
    Psychologists}, author={Böer, Nils Tobias and Güldenpenning, Iris and Weigelt,
    Matthias}, editor={Lê-Hoa Võ, Melissa and Fiebach, Christian and Shing, Yee Lee
    and Sammler, Daniela and Windmann, Sabine and Kaiser, Jochen}, year={2025}, pages={132}
    }'
  chicago: Böer, Nils Tobias, Iris Güldenpenning, and Matthias Weigelt. “Differences
    of Producing Head Fakes with and without a Social Partner.” In <i>67th Conference
    of Experimental Psychologists</i>, edited by Melissa Lê-Hoa Võ, Christian Fiebach,
    Yee Lee Shing, Daniela Sammler, Sabine Windmann, and Jochen Kaiser, 132, 2025.
  ieee: N. T. Böer, I. Güldenpenning, and M. Weigelt, “Differences of producing head
    fakes with and without a social partner,” in <i>67th Conference of Experimental
    Psychologists</i>, Frankfurt am Main, 2025, p. 132.
  mla: Böer, Nils Tobias, et al. “Differences of Producing Head Fakes with and without
    a Social Partner.” <i>67th Conference of Experimental Psychologists</i>, edited
    by Melissa Lê-Hoa Võ et al., 2025, p. 132.
  short: 'N.T. Böer, I. Güldenpenning, M. Weigelt, in: M. Lê-Hoa Võ, C. Fiebach, Y.L.
    Shing, D. Sammler, S. Windmann, J. Kaiser (Eds.), 67th Conference of Experimental
    Psychologists, 2025, p. 132.'
conference:
  end_date: 2025-03-12
  location: Frankfurt am Main
  name: 67th Conference of Experimental Psychologists
  start_date: 2025-03-10
date_created: 2026-03-31T11:08:48Z
date_updated: 2026-03-31T11:09:06Z
ddc:
- '150'
department:
- _id: '17'
- _id: '266'
editor:
- first_name: Melissa
  full_name: Lê-Hoa Võ, Melissa
  last_name: Lê-Hoa Võ
- first_name: Christian
  full_name: Fiebach, Christian
  last_name: Fiebach
- first_name: Yee Lee
  full_name: Shing, Yee Lee
  last_name: Shing
- first_name: Daniela
  full_name: Sammler, Daniela
  last_name: Sammler
- first_name: Sabine
  full_name: Windmann, Sabine
  last_name: Windmann
- first_name: Jochen
  full_name: Kaiser, Jochen
  last_name: Kaiser
file:
- access_level: closed
  content_type: application/pdf
  creator: nboeer
  date_created: 2026-03-31T11:07:45Z
  date_updated: 2026-03-31T11:07:45Z
  file_id: '65260'
  file_name: TeaP_Böer 2025_Abstract.pdf
  file_size: 3357246
  relation: main_file
  success: 1
file_date_updated: 2026-03-31T11:07:45Z
has_accepted_license: '1'
keyword:
- deception
- action preparation
- perception
- movement planning
- sport psychology
language:
- iso: eng
page: '132'
publication: 67th Conference of Experimental Psychologists
publication_status: published
status: public
title: Differences of producing head fakes with and without a social partner
type: conference_abstract
user_id: '52000'
year: '2025'
...
---
_id: '59896'
abstract:
- lang: eng
  text: We present an electronic-photonic co-designed Mach-Zehnder modulator with
    linear segment drivers in a photonic SOI-CMOS technology with an EO 3-dB bandwidth
    of ≥ 27 GHz and data transmission up to 64 Gbit/s without pre-emphasis.
author:
- first_name: Christian
  full_name: Kress, Christian
  id: '13256'
  last_name: Kress
  orcid: 0000-0002-4403-2237
- first_name: Tobias
  full_name: Schwabe, Tobias
  id: '39217'
  last_name: Schwabe
- first_name: Martin Miroslavov
  full_name: Mihaylov, Martin Miroslavov
  id: '42449'
  last_name: Mihaylov
- first_name: J. Christoph
  full_name: Scheytt, J. Christoph
  id: '37144'
  last_name: Scheytt
  orcid: '0000-0002-5950-6618 '
citation:
  ama: Kress C, Schwabe T, Mihaylov MM, Scheytt JC. High-Speed Mach-Zehnder Modulator
    with Linear Segmented On-Chip Drivers in Photonic 45nm SOI-CMOS Technology .
  apa: 'Kress, C., Schwabe, T., Mihaylov, M. M., &#38; Scheytt, J. C. (n.d.). <i>High-Speed
    Mach-Zehnder Modulator with Linear Segmented On-Chip Drivers in Photonic 45nm
    SOI-CMOS Technology </i>. CLEO: Conference on Lasers and Electro-Optics, Long
    Beach, CA, USA.'
  bibtex: '@inproceedings{Kress_Schwabe_Mihaylov_Scheytt, title={High-Speed Mach-Zehnder
    Modulator with Linear Segmented On-Chip Drivers in Photonic 45nm SOI-CMOS Technology
    }, author={Kress, Christian and Schwabe, Tobias and Mihaylov, Martin Miroslavov
    and Scheytt, J. Christoph} }'
  chicago: Kress, Christian, Tobias Schwabe, Martin Miroslavov Mihaylov, and J. Christoph
    Scheytt. “High-Speed Mach-Zehnder Modulator with Linear Segmented On-Chip Drivers
    in Photonic 45nm SOI-CMOS Technology ,” n.d.
  ieee: 'C. Kress, T. Schwabe, M. M. Mihaylov, and J. C. Scheytt, “High-Speed Mach-Zehnder
    Modulator with Linear Segmented On-Chip Drivers in Photonic 45nm SOI-CMOS Technology
    ,” presented at the CLEO: Conference on Lasers and Electro-Optics, Long Beach,
    CA, USA.'
  mla: Kress, Christian, et al. <i>High-Speed Mach-Zehnder Modulator with Linear Segmented
    On-Chip Drivers in Photonic 45nm SOI-CMOS Technology </i>.
  short: 'C. Kress, T. Schwabe, M.M. Mihaylov, J.C. Scheytt, in: n.d.'
conference:
  end_date: 2025-05-09
  location: Long Beach, CA, USA
  name: 'CLEO: Conference on Lasers and Electro-Optics'
  start_date: 2025-05-04
date_created: 2025-05-14T11:08:07Z
date_updated: 2026-03-31T09:06:49Z
department:
- _id: '58'
- _id: '623'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://ieeexplore.ieee.org/document/11190539
oa: '1'
project:
- _id: '175'
  name: 'TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen
    Modulatoren auf Basis von CMOS und LNOI (C11*)'
- _id: '302'
  name: 'PONyDAC: SPP 2111 - PONyDAC II - Präziser Optischer Nyquist-Puls-Synthesizer
    DAC'
publication_status: accepted
status: public
title: 'High-Speed Mach-Zehnder Modulator with Linear Segmented On-Chip Drivers in
  Photonic 45nm SOI-CMOS Technology '
type: conference
user_id: '13256'
year: '2025'
...
---
_id: '53413'
abstract:
- lang: eng
  text: "For negatively curved symmetric spaces it is known that the poles of the\r\nscattering
    matrices defined via the standard intertwining operators for the\r\nspherical
    principal representations of the isometry group are either given as\r\npoles of
    the intertwining operators or as quantum resonances, i.e. poles of the\r\nmeromorphically
    continued resolvents of the Laplace-Beltrami operator. We\r\nextend this result
    to classical locally symmetric spaces of negative curvature\r\nwith convex-cocompact
    fundamental group using results of Bunke and Olbrich. The\r\nmethod of proof forces
    us to exclude the spectral parameters corresponding to\r\nsingular Poisson transforms."
article_type: original
author:
- first_name: Benjamin
  full_name: Delarue, Benjamin
  id: '70575'
  last_name: Delarue
- first_name: Joachim
  full_name: Hilgert, Joachim
  id: '220'
  last_name: Hilgert
citation:
  ama: Delarue B, Hilgert J. Quantum resonances and scattering poles of classical
    rank one locally  symmetric spaces. <i>Journal of Lie Theory</i>. 35((4)):787--804.
  apa: Delarue, B., &#38; Hilgert, J. (n.d.). Quantum resonances and scattering poles
    of classical rank one locally  symmetric spaces. <i>Journal of Lie Theory</i>,
    <i>35</i>((4)), 787--804.
  bibtex: '@article{Delarue_Hilgert, title={Quantum resonances and scattering poles
    of classical rank one locally  symmetric spaces}, volume={35}, number={(4)}, journal={Journal
    of Lie Theory}, author={Delarue, Benjamin and Hilgert, Joachim}, pages={787--804}
    }'
  chicago: 'Delarue, Benjamin, and Joachim Hilgert. “Quantum Resonances and Scattering
    Poles of Classical Rank One Locally  Symmetric Spaces.” <i>Journal of Lie Theory</i>
    35, no. (4) (n.d.): 787--804.'
  ieee: B. Delarue and J. Hilgert, “Quantum resonances and scattering poles of classical
    rank one locally  symmetric spaces,” <i>Journal of Lie Theory</i>, vol. 35, no.
    (4), pp. 787--804.
  mla: Delarue, Benjamin, and Joachim Hilgert. “Quantum Resonances and Scattering
    Poles of Classical Rank One Locally  Symmetric Spaces.” <i>Journal of Lie Theory</i>,
    vol. 35, no. (4), pp. 787--804.
  short: B. Delarue, J. Hilgert, Journal of Lie Theory 35 (n.d.) 787--804.
date_created: 2024-04-11T12:31:18Z
date_updated: 2026-03-31T09:07:17Z
department:
- _id: '548'
intvolume: '        35'
issue: (4)
language:
- iso: eng
page: 787--804
publication: Journal of Lie Theory
publication_identifier:
  issn:
  - 0949-5932
publication_status: inpress
status: public
title: Quantum resonances and scattering poles of classical rank one locally  symmetric
  spaces
type: journal_article
user_id: '220'
volume: 35
year: '2025'
...
---
_id: '65262'
author:
- first_name: Tabea
  full_name: Brucks , Tabea
  last_name: 'Brucks '
- first_name: Heike M.
  full_name: Buhl, Heike M.
  id: '27152'
  last_name: Buhl
citation:
  ama: 'Brucks  T, Buhl HM. Digitale Ressourcen im Psychologieunterricht. In: Scharlau
    I, Bender E, Patrzek J, Schreiber C, eds. <i>Psychologiedidaktik an Allgemeinbildenden
    Und Beruflichen Schulen. Ein Lehrbuch Mit Unterrichtsmaterialien</i>. Springer;
    2025:201-228.'
  apa: Brucks , T., &#38; Buhl, H. M. (2025). Digitale Ressourcen im Psychologieunterricht.
    In I. Scharlau, E. Bender, J. Patrzek, &#38; C. Schreiber (Eds.), <i>Psychologiedidaktik
    an allgemeinbildenden und beruflichen Schulen. Ein Lehrbuch mit Unterrichtsmaterialien</i>
    (pp. 201–228). Springer.
  bibtex: '@inbook{Brucks _Buhl_2025, place={Berlin}, title={Digitale Ressourcen im
    Psychologieunterricht}, booktitle={Psychologiedidaktik an allgemeinbildenden und
    beruflichen Schulen. Ein Lehrbuch mit Unterrichtsmaterialien}, publisher={Springer},
    author={Brucks , Tabea and Buhl, Heike M.}, editor={Scharlau, Ingrid and Bender,
    Elena and Patrzek, Justine and Schreiber, Christine}, year={2025}, pages={201–228}
    }'
  chicago: 'Brucks , Tabea, and Heike M. Buhl. “Digitale Ressourcen Im Psychologieunterricht.”
    In <i>Psychologiedidaktik an Allgemeinbildenden Und Beruflichen Schulen. Ein Lehrbuch
    Mit Unterrichtsmaterialien</i>, edited by Ingrid Scharlau, Elena Bender, Justine
    Patrzek, and Christine Schreiber, 201–28. Berlin: Springer, 2025.'
  ieee: 'T. Brucks  and H. M. Buhl, “Digitale Ressourcen im Psychologieunterricht,”
    in <i>Psychologiedidaktik an allgemeinbildenden und beruflichen Schulen. Ein Lehrbuch
    mit Unterrichtsmaterialien</i>, I. Scharlau, E. Bender, J. Patrzek, and C. Schreiber,
    Eds. Berlin: Springer, 2025, pp. 201–228.'
  mla: Brucks , Tabea, and Heike M. Buhl. “Digitale Ressourcen Im Psychologieunterricht.”
    <i>Psychologiedidaktik an Allgemeinbildenden Und Beruflichen Schulen. Ein Lehrbuch
    Mit Unterrichtsmaterialien</i>, edited by Ingrid Scharlau et al., Springer, 2025,
    pp. 201–28.
  short: 'T. Brucks , H.M. Buhl, in: I. Scharlau, E. Bender, J. Patrzek, C. Schreiber
    (Eds.), Psychologiedidaktik an Allgemeinbildenden Und Beruflichen Schulen. Ein
    Lehrbuch Mit Unterrichtsmaterialien, Springer, Berlin, 2025, pp. 201–228.'
date_created: 2026-03-31T16:33:22Z
date_updated: 2026-03-31T16:34:51Z
department:
- _id: '427'
editor:
- first_name: Ingrid
  full_name: Scharlau, Ingrid
  last_name: Scharlau
- first_name: Elena
  full_name: Bender, Elena
  last_name: Bender
- first_name: Justine
  full_name: Patrzek, Justine
  last_name: Patrzek
- first_name: Christine
  full_name: Schreiber, Christine
  last_name: Schreiber
language:
- iso: eng
page: 201-228
place: Berlin
publication: Psychologiedidaktik an allgemeinbildenden und beruflichen Schulen. Ein
  Lehrbuch mit Unterrichtsmaterialien
publisher: Springer
status: public
title: Digitale Ressourcen im Psychologieunterricht
type: book_chapter
user_id: '90826'
year: '2025'
...
---
_id: '61118'
abstract:
- lang: eng
  text: Im Zuge der Digitalisierung erfahren maschinelles Lernen und datengetriebene
    Methoden derzeit eine große Aufmerksamkeit in Wissenschaft und Industrie. Es fehlt
    jedoch an Grundlagenwissen und Verständnis, wie die datengetriebenen Methoden
    der Informatik mit bewährten modellbasierten Ingenieursmethoden wie dem modellbasierten
    Entwurf in der Mechatronik und Methoden der Regelungstechnik sinnvoll kombiniert
    werden können, um hybride Modelle zu erhalten. Diese ingenieurwissenschaftlichen
    Methoden basieren auf physikalischen Verhaltensmodellen, die eine besonders verdichtete
    und interpretierbare Darstellung von Wissen darstellen und insbesondere kausale
    Zusammenhänge beschreiben. Für spezifische regelungstechnische Anwendungen gibt
    es umfangreiches Vorwissen in Form von bekannten Strukturen und Informationen,
    wie z.B. (Teil-)Modelle oder Parametersätze, die auch bei der Anwendung von Methoden
    wie dem maschinellen Lernen genutzt werden sollten. Eine solche sinnvolle systematische
    Verknüpfung ist wissenschaftlich, insbesondere im Hinblick auf die industrielle
    Anwendung, noch nicht ausreichend untersucht worden und sehr vielversprechend.
    In diesem Beitrag werden die Ergebnisse der Nachwuchsforschungsgruppe DART – Datengetriebene
    Methoden in der Regelungstechnik vorgestellt. Das Hauptziel war es, die synergetische
    Kombination von modell- und datengetriebenen Methoden für regelungstechnische
    Aufgaben zu erforschen und es werden alle wichtigen Forschungsergebnisse aber
    auch die verwendeten Grundprinzipien des maschinellen Lernens in diesem Beitrag
    dargestellt.
- lang: eng
  text: In the course of digitalization, machine learning and data-driven methods
    are currently receiving a great deal of attention in science and industry. However,
    there is a lack of basic knowledge and understanding of how data-driven methods
    in computer science can be meaningfully combined with proven model-based engineering
    methods such as model-based design in mechatronics and control engineering methods
    to obtain hybrid models. These engineering methods are based on physical models,
    which represent a particularly condensed and interpretable representation of knowledge
    and, in particular, describe causal relationships. For specific control engineering
    applications, there is extensive prior knowledge in the form of known structures
    and information, such as (partial) models or parameter sets, which should also
    be used when applying methods such as machine learning. Such a meaningful systematic
    connection has not yet been sufficiently investigated scientifically, especially
    with regard to industrial applications, and is very promising. This contribution
    presents the results of the DART junior research group – Data-driven methods in
    control engineering. The main objective was to investigate the synergistic combination
    of model- and data-driven methods for control engineering tasks, and all important
    research results as well as the basic principles of machine learning used are
    presented in this publication.
author:
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
- first_name: Ricarda-Samantha
  full_name: Götte, Ricarda-Samantha
  id: '43992'
  last_name: Götte
- first_name: Annika
  full_name: Junker, Annika
  id: '41470'
  last_name: Junker
  orcid: 0009-0002-6475-2503
- first_name: Michael
  full_name: Hesse, Michael
  id: '29222'
  last_name: Hesse
- first_name: Luis
  full_name: Schwarzer, Luis
  last_name: Schwarzer
citation:
  ama: Timmermann J, Götte R-S, Junker A, Hesse M, Schwarzer L. <i>DART - Datengetriebene
    Methoden in der Regelungstechnik</i>. Vol Band 430. 1. Auflage. HNI Verlagsschriftenreihe;
    2025. doi:<a href="https://doi.org/10.17619/UNIPB/1-2305">10.17619/UNIPB/1-2305</a>
  apa: 'Timmermann, J., Götte, R.-S., Junker, A., Hesse, M., &#38; Schwarzer, L. (2025).
    <i>DART - Datengetriebene Methoden in der Regelungstechnik: Vol. Band 430</i>
    (1. Auflage). HNI Verlagsschriftenreihe. <a href="https://doi.org/10.17619/UNIPB/1-2305">https://doi.org/10.17619/UNIPB/1-2305</a>'
  bibtex: '@book{Timmermann_Götte_Junker_Hesse_Schwarzer_2025, place={Paderborn},
    edition={1. Auflage}, title={DART - Datengetriebene Methoden in der Regelungstechnik},
    volume={Band 430}, DOI={<a href="https://doi.org/10.17619/UNIPB/1-2305">10.17619/UNIPB/1-2305</a>},
    publisher={HNI Verlagsschriftenreihe}, author={Timmermann, Julia and Götte, Ricarda-Samantha
    and Junker, Annika and Hesse, Michael and Schwarzer, Luis}, year={2025} }'
  chicago: 'Timmermann, Julia, Ricarda-Samantha Götte, Annika Junker, Michael Hesse,
    and Luis Schwarzer. <i>DART - Datengetriebene Methoden in der Regelungstechnik</i>.
    1. Auflage. Vol. Band 430. Paderborn: HNI Verlagsschriftenreihe, 2025. <a href="https://doi.org/10.17619/UNIPB/1-2305">https://doi.org/10.17619/UNIPB/1-2305</a>.'
  ieee: 'J. Timmermann, R.-S. Götte, A. Junker, M. Hesse, and L. Schwarzer, <i>DART
    - Datengetriebene Methoden in der Regelungstechnik</i>, 1. Auflage., vol. Band
    430. Paderborn: HNI Verlagsschriftenreihe, 2025.'
  mla: Timmermann, Julia, et al. <i>DART - Datengetriebene Methoden in der Regelungstechnik</i>.
    1. Auflage, vol. Band 430, HNI Verlagsschriftenreihe, 2025, doi:<a href="https://doi.org/10.17619/UNIPB/1-2305">10.17619/UNIPB/1-2305</a>.
  short: J. Timmermann, R.-S. Götte, A. Junker, M. Hesse, L. Schwarzer, DART - Datengetriebene
    Methoden in der Regelungstechnik, 1. Auflage, HNI Verlagsschriftenreihe, Paderborn,
    2025.
date_created: 2025-09-03T09:35:35Z
date_updated: 2026-04-01T06:14:00Z
department:
- _id: '880'
- _id: '153'
doi: 10.17619/UNIPB/1-2305
edition: 1. Auflage
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://digital.ub.uni-paderborn.de/doi/10.17619/UNIPB/1-2305
oa: '1'
place: Paderborn
publication_status: published
publisher: HNI Verlagsschriftenreihe
status: public
title: DART - Datengetriebene Methoden in der Regelungstechnik
type: book
user_id: '41470'
volume: Band 430
year: '2025'
...
---
_id: '65268'
abstract:
- lang: eng
  text: The increasing number of multi-unit hosts in peer-to-peer platforms such as
    Airbnb poses a significant challenge to single-unit hosts, who compete in a highly
    professionalized market where host-guest interactions have become increasingly
    anonymous. However, anonymity may undermine trust and affect eWOM, crucial elements
    for the performance of peer-to-peer platforms, as they heavily rely on mutual
    trust and positive eWOM to succeed. This study investigated the effects of the
    presence of hosts’ personal decorations and a local welcome gift on eWOM. Perceived
    anonymity and trust emerge as mediating mechanisms, such that the presence of
    personal decorations reduced the guest’s perception of anonymity towards the host,
    which subsequently increased guest’s trust and their intention to spread positive
    eWOM. The local welcome gift did not show any significant effects. These insights
    contribute to servicescape research and offer practical implications for single-unit
    hosts to differentiate their service experience from that of professional hosts.
author:
- first_name: Edna
  full_name: Ozuna, Edna
  last_name: Ozuna
citation:
  ama: 'Ozuna E. First impressions matter: Shaping the servicescape to address anonymity
    and trust in peer-to-peer sharing economy services. <i>Journal of Service Management
    Research</i>. 2025;9(1):2-18. doi:<a href="https://doi.org/10.5771/2511-8676-2025-1-2">10.5771/2511-8676-2025-1-2</a>'
  apa: 'Ozuna, E. (2025). First impressions matter: Shaping the servicescape to address
    anonymity and trust in peer-to-peer sharing economy services. <i>Journal of Service
    Management Research</i>, <i>9</i>(1), 2–18. <a href="https://doi.org/10.5771/2511-8676-2025-1-2">https://doi.org/10.5771/2511-8676-2025-1-2</a>'
  bibtex: '@article{Ozuna_2025, title={First impressions matter: Shaping the servicescape
    to address anonymity and trust in peer-to-peer sharing economy services}, volume={9},
    DOI={<a href="https://doi.org/10.5771/2511-8676-2025-1-2">10.5771/2511-8676-2025-1-2</a>},
    number={1}, journal={Journal of Service Management Research}, publisher={Nomos
    Verlag}, author={Ozuna, Edna}, year={2025}, pages={2–18} }'
  chicago: 'Ozuna, Edna. “First Impressions Matter: Shaping the Servicescape to Address
    Anonymity and Trust in Peer-to-Peer Sharing Economy Services.” <i>Journal of Service
    Management Research</i> 9, no. 1 (2025): 2–18. <a href="https://doi.org/10.5771/2511-8676-2025-1-2">https://doi.org/10.5771/2511-8676-2025-1-2</a>.'
  ieee: 'E. Ozuna, “First impressions matter: Shaping the servicescape to address
    anonymity and trust in peer-to-peer sharing economy services,” <i>Journal of Service
    Management Research</i>, vol. 9, no. 1, pp. 2–18, 2025, doi: <a href="https://doi.org/10.5771/2511-8676-2025-1-2">10.5771/2511-8676-2025-1-2</a>.'
  mla: 'Ozuna, Edna. “First Impressions Matter: Shaping the Servicescape to Address
    Anonymity and Trust in Peer-to-Peer Sharing Economy Services.” <i>Journal of Service
    Management Research</i>, vol. 9, no. 1, Nomos Verlag, 2025, pp. 2–18, doi:<a href="https://doi.org/10.5771/2511-8676-2025-1-2">10.5771/2511-8676-2025-1-2</a>.'
  short: E. Ozuna, Journal of Service Management Research 9 (2025) 2–18.
date_created: 2026-04-01T07:16:15Z
date_updated: 2026-04-01T07:27:21Z
doi: 10.5771/2511-8676-2025-1-2
intvolume: '         9'
issue: '1'
language:
- iso: eng
page: 2-18
publication: Journal of Service Management Research
publication_identifier:
  issn:
  - 2511-8676
publication_status: published
publisher: Nomos Verlag
status: public
title: 'First impressions matter: Shaping the servicescape to address anonymity and
  trust in peer-to-peer sharing economy services'
type: journal_article
user_id: '103813'
volume: 9
year: '2025'
...
---
_id: '60050'
abstract:
- lang: eng
  text: Reputation systems to rate companies’ performances remain largely unexplored
    inresearch and are scarcely used in business-to-business (B2B) practice. Such
    systemsare essential for businesses seeking trustworthy partners, as they help
    reduce infor-mation asymmetry, lower buyers’ transaction risks, and allow high-quality
    serviceproviders to justify premium pricing. Unlike traditional review-based systems
    in thebusiness-to-consumer (B2C) context, we propose a B2B reputation mechanism
    inwhich buyers commit to a rating payment before a transaction. Once the buyer
    final-izes the rating, this payment is executed and recorded on a blockchain as
    an immu-table, secure ledger. Our system mimics natural trust-building mechanisms
    with rat-ings that are (1) monetary-based, (2) stake-based, (3) non-aggregated,
    (4) involvecounter-ratings, (5) selectively sellable, (6) individually comparable,
    (7) stored ona blockchain, (8) and monitored by a third instance. This system
    provides a novelapproach to fostering trust in B2B transactions by reducing information
    asymme-try and transaction risk. We illustrate the mechanism’s application in
    the consultingsector. Our analysis has identified 23 institutional trust and distrust
    dimensions thatpromote establishing institutional trust through the proposed mechanism.
    Qualita-tive interviews suggest that, while complex and challenging to apply,
    this mecha-nism can foster trust in B2B transactions. Given the low maturity in
    the applicationdomain—rating professional business services with business reputation
    systems—and solution domain—using monetary stakes for ratings, this system stands
    as apotential invention.
article_type: original
author:
- first_name: Simon
  full_name: Hemmrich, Simon
  id: '83557'
  last_name: Hemmrich
- first_name: Volker
  full_name: Nissen, Volker
  last_name: Nissen
- first_name: Daniel
  full_name: Beverungen, Daniel
  id: '59677'
  last_name: Beverungen
- first_name: Josias Daniel Miño
  full_name: Pauls, Josias Daniel Miño
  last_name: Pauls
citation:
  ama: 'Hemmrich S, Nissen V, Beverungen D, Pauls JDM. Blockchain‑based reputation
    systemsfor business‑to‑business services: designing a reputation mechanism to
    reduce information asymmetry in professional consulting. <i>Information Systems
    and e-Business Management</i>. 2025;23(1). doi:<a href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>'
  apa: 'Hemmrich, S., Nissen, V., Beverungen, D., &#38; Pauls, J. D. M. (2025). Blockchain‑based
    reputation systemsfor business‑to‑business services: designing a reputation mechanism
    to reduce information asymmetry in professional consulting. <i>Information Systems
    and E-Business Management</i>, <i>23</i>(1). <a href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>'
  bibtex: '@article{Hemmrich_Nissen_Beverungen_Pauls_2025, title={Blockchain‑based
    reputation systemsfor business‑to‑business services: designing a reputation mechanism
    to reduce information asymmetry in professional consulting}, volume={23}, DOI={<a
    href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>},
    number={1}, journal={Information Systems and e-Business Management}, publisher={Springer},
    author={Hemmrich, Simon and Nissen, Volker and Beverungen, Daniel and Pauls, Josias
    Daniel Miño}, year={2025} }'
  chicago: 'Hemmrich, Simon, Volker Nissen, Daniel Beverungen, and Josias Daniel Miño
    Pauls. “Blockchain‑based Reputation Systemsfor Business‑to‑business Services:
    Designing a Reputation Mechanism to Reduce Information Asymmetry in Professional
    Consulting.” <i>Information Systems and E-Business Management</i> 23, no. 1 (2025).
    <a href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>.'
  ieee: 'S. Hemmrich, V. Nissen, D. Beverungen, and J. D. M. Pauls, “Blockchain‑based
    reputation systemsfor business‑to‑business services: designing a reputation mechanism
    to reduce information asymmetry in professional consulting,” <i>Information Systems
    and e-Business Management</i>, vol. 23, no. 1, 2025, doi: <a href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>.'
  mla: 'Hemmrich, Simon, et al. “Blockchain‑based Reputation Systemsfor Business‑to‑business
    Services: Designing a Reputation Mechanism to Reduce Information Asymmetry in
    Professional Consulting.” <i>Information Systems and E-Business Management</i>,
    vol. 23, no. 1, Springer, 2025, doi:<a href="https://doi.org/10.1007/s10257-025-00702-9">https://doi.org/10.1007/s10257-025-00702-9</a>.'
  short: S. Hemmrich, V. Nissen, D. Beverungen, J.D.M. Pauls, Information Systems
    and E-Business Management 23 (2025).
date_created: 2025-05-28T08:12:28Z
date_updated: 2026-04-02T04:32:13Z
ddc:
- '000'
department:
- _id: '195'
doi: https://doi.org/10.1007/s10257-025-00702-9
external_id:
  unknown:
  - https://doi.org/10.1007/s10257-025-00702-9
file:
- access_level: closed
  content_type: application/pdf
  creator: hemmrich
  date_created: 2025-05-28T08:05:18Z
  date_updated: 2025-05-28T08:05:18Z
  file_id: '60051'
  file_name: Hemmrich_et_al-2025-Information_Systems_and_e-Business_Management.pdf
  file_size: 1440251
  relation: main_file
  success: 1
file_date_updated: 2025-05-28T08:05:18Z
has_accepted_license: '1'
intvolume: '        23'
issue: '1'
jel:
- D81
- D82
- L86
- L10
- M30
keyword:
- Information asymmetry
- Trust
- Reputation system
- Monetary rating
- Blockchain
- Consulting
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://link.springer.com/epdf/10.1007/s10257-025-00702-9?sharing_token=fOiWqZx_ScKFAKjxu5UqWPe4RwlQNchNByi7wbcMAY6mjxpZFPB3OtpVT0rAZf9eEBt3_qXIVcZ67l3R9JVYasmuCsIimzE-xfP0N5Rimun248j0jFOnL1eBu4rypKSDFnbmR3kJ5xx-HLnCXvPvQPwpm09qOkS9GSNsiG-du60%3D
oa: '1'
publication: Information Systems and e-Business Management
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: 'Blockchain‑based reputation systemsfor business‑to‑business services: designing
  a reputation mechanism to reduce information asymmetry in professional consulting'
type: journal_article
user_id: '83557'
volume: 23
year: '2025'
...
---
_id: '65309'
author:
- first_name: Simon
  full_name: Hemmrich, Simon
  id: '83557'
  last_name: Hemmrich
citation:
  ama: 'Hemmrich S. <i>A Design Theory for Blockchain-Based Reputation Systems : Trust
    and Coordination in B2B Markets</i>. Universität Paderborn; 2025. doi:<a href="https://doi.org/10.17619/UNIPB/1-2414">https://doi.org/10.17619/UNIPB/1-2414</a>'
  apa: 'Hemmrich, S. (2025). <i>A Design Theory for Blockchain-Based Reputation Systems :
    Trust and Coordination in B2B Markets</i>. Universität Paderborn. <a href="https://doi.org/10.17619/UNIPB/1-2414">https://doi.org/10.17619/UNIPB/1-2414</a>'
  bibtex: '@book{Hemmrich_2025, place={Paderborn}, title={A Design Theory for Blockchain-Based
    Reputation Systems : Trust and Coordination in B2B Markets}, DOI={<a href="https://doi.org/10.17619/UNIPB/1-2414">https://doi.org/10.17619/UNIPB/1-2414</a>},
    publisher={Universität Paderborn}, author={Hemmrich, Simon}, year={2025} }'
  chicago: 'Hemmrich, Simon. <i>A Design Theory for Blockchain-Based Reputation Systems :
    Trust and Coordination in B2B Markets</i>. Paderborn: Universität Paderborn, 2025.
    <a href="https://doi.org/10.17619/UNIPB/1-2414">https://doi.org/10.17619/UNIPB/1-2414</a>.'
  ieee: 'S. Hemmrich, <i>A Design Theory for Blockchain-Based Reputation Systems :
    Trust and Coordination in B2B Markets</i>. Paderborn: Universität Paderborn, 2025.'
  mla: 'Hemmrich, Simon. <i>A Design Theory for Blockchain-Based Reputation Systems :
    Trust and Coordination in B2B Markets</i>. Universität Paderborn, 2025, doi:<a
    href="https://doi.org/10.17619/UNIPB/1-2414">https://doi.org/10.17619/UNIPB/1-2414</a>.'
  short: 'S. Hemmrich, A Design Theory for Blockchain-Based Reputation Systems : Trust
    and Coordination in B2B Markets, Universität Paderborn, Paderborn, 2025.'
date_created: 2026-04-02T03:52:09Z
date_updated: 2026-04-02T04:31:57Z
department:
- _id: '195'
doi: https://doi.org/10.17619/UNIPB/1-2414
jel:
- D8
keyword:
- Reputation Systems
- Rating systems
- monetary ratings
- incentive mechanism
- systems theory
- Market coordination
- advanced review system
language:
- iso: eng
page: '347'
place: Paderborn
publication_status: published
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Daniel
  full_name: Beverungen, Daniel
  last_name: Beverungen
- first_name: Dennis
  full_name: Kundisch, Dennis
  last_name: Kundisch
title: 'A Design Theory for Blockchain-Based Reputation Systems : Trust and Coordination
  in B2B Markets'
type: dissertation
user_id: '83557'
year: '2025'
...
---
_id: '64803'
abstract:
- lang: eng
  text: "Nowadays ultrasound technology is established in various fields of application
    like industrial production or medical technology. Besides high power ultrasound
    applications like ultrasonic cleaning and ultrasonic welding, which are often
    not strongly restricted regarding their weight, costs, and construction space,
    there are many applications in the low to medium power range like handheld surgical
    instruments, medical inhalers, or ultrasonic cutters. For the latter there is
    often a strong demand for low weight and construction space and low costs to be
    competitive in mass production. Another challenge that arises from the RoHS-directive
    [1] is, that new ultrasonic devices should avoid the use of lead-containing PZT-materials.
    Against this background there is a demand for lead-free, small and lightweight
    and cost-effective ultrasonic transducers.\r\nIn many of the above-mentioned applications,
    pre-stressed Bolted-Langevine-Transducers (BLT) based on lead-containing PZT-materials
    are established to generate ultrasonic vibrations. These are quite advantageous
    in many ways and can be built tailored to each application and even for high power
    of thousands of watts. But due to the required steps during their manufacturing
    process (machining parts, assembly, pre-stressing, frequency tuning, …), these
    transducers remain expensive. Furthermore, due to the operation in resonance,
    the construction space of these transducers is linked to their wavelength and
    cannot be reduced remarkably.\r\nFor these reasons, our aim is to present an innovative
    lead-free ultrasonic transducer for low to medium power applications, that is
    based on bending vibrations instead of longitudinal vibrations. This design enables
    to build very small transducers. Furthermore, due to their simple construction,
    these transducers can be built at low manufacturing costs and are well suited
    for industrial mass production. The use of lead-free piezoelectric materials makes
    this transducer design ready for future applications.\r\nIn our contribution we
    will present the model-based design of a lead-free 30 kHz bending transducer for
    applications up to 10 W. Furthermore, the comprehensive experimental analysis
    of this transducer-prototype in applications like mist generation or ultrasonic
    drilling will be presented. The results will be compared to a PZT-based bending
    transducer and a classical BLT to show the potential and limits of these kind
    of transducers and lead-free materials.\r\n"
author:
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Claus
  full_name: Scheidemann, Claus
  id: '38259'
  last_name: Scheidemann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Bornmann P, Littmann W, Scheidemann C, Hemsel T. Innovative lead-free ultrasonic
    bending transducers for low to medium power applications. In: ; 2025.'
  apa: Bornmann, P., Littmann, W., Scheidemann, C., &#38; Hemsel, T. (2025). <i>Innovative
    lead-free ultrasonic bending transducers for low to medium power applications</i>.
    International Congress on Ultrasonics (ICU), Paderborn, Germany.
  bibtex: '@inproceedings{Bornmann_Littmann_Scheidemann_Hemsel_2025, title={Innovative
    lead-free ultrasonic bending transducers for low to medium power applications},
    author={Bornmann, Peter and Littmann, Walter and Scheidemann, Claus and Hemsel,
    Tobias}, year={2025} }'
  chicago: Bornmann, Peter, Walter Littmann, Claus Scheidemann, and Tobias Hemsel.
    “Innovative Lead-Free Ultrasonic Bending Transducers for Low to Medium Power Applications,”
    2025.
  ieee: P. Bornmann, W. Littmann, C. Scheidemann, and T. Hemsel, “Innovative lead-free
    ultrasonic bending transducers for low to medium power applications,” presented
    at the International Congress on Ultrasonics (ICU), Paderborn, Germany, 2025.
  mla: Bornmann, Peter, et al. <i>Innovative Lead-Free Ultrasonic Bending Transducers
    for Low to Medium Power Applications</i>. 2025.
  short: 'P. Bornmann, W. Littmann, C. Scheidemann, T. Hemsel, in: 2025.'
conference:
  end_date: 2025-09-25
  location: Paderborn, Germany
  name: International Congress on Ultrasonics (ICU)
  start_date: 2025-09-21
date_created: 2026-03-02T11:35:33Z
date_updated: 2026-04-02T12:47:18Z
ddc:
- '620'
department:
- _id: '151'
file:
- access_level: closed
  content_type: application/pdf
  creator: hemsel
  date_created: 2026-04-02T12:46:09Z
  date_updated: 2026-04-02T12:46:09Z
  file_id: '65354'
  file_name: ICU_2025_Bornmann.pdf
  file_size: 1878995
  relation: main_file
  success: 1
file_date_updated: 2026-04-02T12:46:09Z
has_accepted_license: '1'
language:
- iso: eng
status: public
title: Innovative lead-free ultrasonic bending transducers for low to medium power
  applications
type: conference
user_id: '210'
year: '2025'
...
---
_id: '64802'
abstract:
- lang: eng
  text: Power ultrasonic actuators are used in various industrial, automotive and
    medical applications. Examples are ultrasonic welding of plastics or metal, surgery
    processes like cutting of tissue or bone, and the excitation of cavitation in
    liquids for ultrasonic cleaning. From a physical point of view, many of these
    processes are characterised by non-constant damping conditions for the ultrasonic
    actuators, since the systems need to be driven in unloaded as well as in high-loaded
    states. To get high power output, the piezoelectric actuators are usually driven
    in or near resonance at precisely defined vibration amplitudes. This is a quite
    complicated task  especially if cost or mass optimized PZT transducers are used
    or if lead-free piezoelectric ceramics are applied to replace lead-containing
    materials. In particular the sudden change between loading states is very challenging
    for electronic excitation and control. The present contribution gives insight
    into typical problems that may arise in context with sudden load-changes during
    operation, e.g. uncontrolled jumps in voltage and velocity amplitudes. Measurements
    on ultrasonic power actuators being abruptly immersed into water at high amplitude
    are discussed for illustration. Observations during spontaneous load-changes are
    explained, and it is shown that several problems may be defused by driving the
    actuators in antiresonance or using a particular driving point in-between resonance
    and antiresonance (“falling edge control”). The different control strategies are
    investigated always using just one single hardware.
author:
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Claus
  full_name: Scheidemann, Claus
  id: '38259'
  last_name: Scheidemann
citation:
  ama: 'Littmann W, Bornmann P, Hemsel T, Scheidemann C. Power ultrasonic actuators
    with suddenly changing loads: How to control the amplitudes in resonance,  antiresonance,
    or in-between. In: ; 2025.'
  apa: 'Littmann, W., Bornmann, P., Hemsel, T., &#38; Scheidemann, C. (2025). <i>Power
    ultrasonic actuators with suddenly changing loads: How to control the amplitudes
    in resonance,  antiresonance, or in-between</i>. International Conference on Ultrasonics
    (ICU), Paderborn, Germany.'
  bibtex: '@inproceedings{Littmann_Bornmann_Hemsel_Scheidemann_2025, title={Power
    ultrasonic actuators with suddenly changing loads: How to control the amplitudes
    in resonance,  antiresonance, or in-between}, author={Littmann, Walter and Bornmann,
    Peter and Hemsel, Tobias and Scheidemann, Claus}, year={2025} }'
  chicago: 'Littmann, Walter, Peter Bornmann, Tobias Hemsel, and Claus Scheidemann.
    “Power Ultrasonic Actuators with Suddenly Changing Loads: How to Control the Amplitudes
    in Resonance,  Antiresonance, or in-Between,” 2025.'
  ieee: 'W. Littmann, P. Bornmann, T. Hemsel, and C. Scheidemann, “Power ultrasonic
    actuators with suddenly changing loads: How to control the amplitudes in resonance, 
    antiresonance, or in-between,” presented at the International Conference on Ultrasonics
    (ICU), Paderborn, Germany, 2025.'
  mla: 'Littmann, Walter, et al. <i>Power Ultrasonic Actuators with Suddenly Changing
    Loads: How to Control the Amplitudes in Resonance,  Antiresonance, or in-Between</i>.
    2025.'
  short: 'W. Littmann, P. Bornmann, T. Hemsel, C. Scheidemann, in: 2025.'
conference:
  end_date: 2025-09-25
  location: Paderborn, Germany
  name: International Conference on Ultrasonics (ICU)
  start_date: 2025-09-21
date_created: 2026-03-02T11:19:46Z
date_updated: 2026-04-02T12:45:42Z
ddc:
- '620'
department:
- _id: '151'
file:
- access_level: closed
  content_type: application/pdf
  creator: hemsel
  date_created: 2026-04-02T12:41:08Z
  date_updated: 2026-04-02T12:41:08Z
  file_id: '65353'
  file_name: ICU_2025_Littmann.pdf
  file_size: 2522135
  relation: main_file
  success: 1
file_date_updated: 2026-04-02T12:41:08Z
has_accepted_license: '1'
language:
- iso: eng
status: public
title: 'Power ultrasonic actuators with suddenly changing loads: How to control the
  amplitudes in resonance,  antiresonance, or in-between'
type: conference
user_id: '210'
year: '2025'
...
---
_id: '65272'
citation:
  ama: Droß-Krüpe K, ed. <i>(mit K. Ruffing) Von Gerste, Göttern, Geld und Gesetzen.
    Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike</i>. Vol 2.; 2025.
  apa: Droß-Krüpe, K. (Ed.). (2025). <i>(mit K. Ruffing) Von Gerste, Göttern, Geld
    und Gesetzen. Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike</i>
    (Vol. 2).
  bibtex: '@book{Droß-Krüpe_2025, place={Baden-Baden}, series={Oeconomica}, title={(mit
    K. Ruffing) Von Gerste, Göttern, Geld und Gesetzen. Eine Kultur- und Wirtschaftsgeschichte
    von Bier in der Antike}, volume={2}, year={2025}, collection={Oeconomica} }'
  chicago: Droß-Krüpe, Kerstin, ed. <i>(mit K. Ruffing) Von Gerste, Göttern, Geld
    und Gesetzen. Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike</i>.
    Vol. 2. Oeconomica. Baden-Baden, 2025.
  ieee: K. Droß-Krüpe, Ed., <i>(mit K. Ruffing) Von Gerste, Göttern, Geld und Gesetzen.
    Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike</i>, vol. 2. Baden-Baden,
    2025.
  mla: Droß-Krüpe, Kerstin, editor. <i>(mit K. Ruffing) Von Gerste, Göttern, Geld
    und Gesetzen. Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike</i>.
    2025.
  short: K. Droß-Krüpe, ed., (mit K. Ruffing) Von Gerste, Göttern, Geld und Gesetzen.
    Eine Kultur- und Wirtschaftsgeschichte von Bier in der Antike, Baden-Baden, 2025.
date_created: 2026-04-01T10:18:15Z
date_updated: 2026-04-02T15:04:50Z
editor:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
extern: '1'
intvolume: '         2'
language:
- iso: ger
place: Baden-Baden
publication_status: published
series_title: Oeconomica
status: public
title: (mit K. Ruffing) Von Gerste, Göttern, Geld und Gesetzen. Eine Kultur- und Wirtschaftsgeschichte
  von Bier in der Antike
type: book_editor
user_id: '126800'
volume: 2
year: '2025'
...
---
_id: '65346'
author:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
citation:
  ama: 'Droß-Krüpe K. Semiramis. In: <i>The Oxford Classical Dictionary</i>. ; 2025.'
  apa: Droß-Krüpe, K. (2025). Semiramis. In <i>The Oxford Classical Dictionary</i>.
  bibtex: '@inbook{Droß-Krüpe_2025, place={Oxford}, title={Semiramis}, booktitle={The
    Oxford Classical Dictionary}, author={Droß-Krüpe, Kerstin}, year={2025} }'
  chicago: Droß-Krüpe, Kerstin. “Semiramis.” In <i>The Oxford Classical Dictionary</i>.
    Oxford, 2025.
  ieee: K. Droß-Krüpe, “Semiramis,” in <i>The Oxford Classical Dictionary</i>, Oxford,
    2025.
  mla: Droß-Krüpe, Kerstin. “Semiramis.” <i>The Oxford Classical Dictionary</i>, 2025.
  short: 'K. Droß-Krüpe, in: The Oxford Classical Dictionary, Oxford, 2025.'
date_created: 2026-04-02T09:58:37Z
date_updated: 2026-04-02T15:05:21Z
extern: '1'
language:
- iso: eng
main_file_link:
- url: ' https://doi.org/10.1093/acrefore/9780199381135.013.5805'
place: Oxford
publication: The Oxford Classical Dictionary
publication_status: published
status: public
title: Semiramis
type: encyclopedia_article
user_id: '126800'
year: '2025'
...
---
_id: '65345'
author:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
citation:
  ama: 'Droß-Krüpe K. Sardanapalus. In: <i>The Oxford Classical Dictionary</i>. ;
    2025.'
  apa: Droß-Krüpe, K. (2025). Sardanapalus. In <i>The Oxford Classical Dictionary</i>.
  bibtex: '@inbook{Droß-Krüpe_2025, place={Oxford}, title={Sardanapalus}, booktitle={The
    Oxford Classical Dictionary}, author={Droß-Krüpe, Kerstin}, year={2025} }'
  chicago: Droß-Krüpe, Kerstin. “Sardanapalus.” In <i>The Oxford Classical Dictionary</i>.
    Oxford, 2025.
  ieee: K. Droß-Krüpe, “Sardanapalus,” in <i>The Oxford Classical Dictionary</i>,
    Oxford, 2025.
  mla: Droß-Krüpe, Kerstin. “Sardanapalus.” <i>The Oxford Classical Dictionary</i>,
    2025.
  short: 'K. Droß-Krüpe, in: The Oxford Classical Dictionary, Oxford, 2025.'
date_created: 2026-04-02T09:55:08Z
date_updated: 2026-04-02T15:05:27Z
extern: '1'
language:
- iso: eng
main_file_link:
- url: ' https://doi.org/10.1093/acrefore/9780199381135.013.9107'
place: Oxford
publication: The Oxford Classical Dictionary
publication_status: published
status: public
title: Sardanapalus
type: encyclopedia_article
user_id: '126800'
year: '2025'
...
---
_id: '65288'
author:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
citation:
  ama: 'Droß-Krüpe K. Frauenbilder und -rollen. In: Degen J, ed. <i>Das achaimenidisch-persische
    Imperium</i>. Springer Companions Geschichte. ; 2025:339-347.'
  apa: Droß-Krüpe, K. (2025). Frauenbilder und -rollen. In J. Degen (Ed.), <i>Das
    achaimenidisch-persische Imperium</i> (pp. 339–347).
  bibtex: '@inbook{Droß-Krüpe_2025, place={Wiesbaden}, series={Springer Companions
    Geschichte}, title={Frauenbilder und -rollen}, booktitle={Das achaimenidisch-persische
    Imperium}, author={Droß-Krüpe, Kerstin}, editor={Degen, J.}, year={2025}, pages={339–347},
    collection={Springer Companions Geschichte} }'
  chicago: Droß-Krüpe, Kerstin. “Frauenbilder und -rollen.” In <i>Das achaimenidisch-persische
    Imperium</i>, edited by J. Degen, 339–47. Springer Companions Geschichte. Wiesbaden,
    2025.
  ieee: K. Droß-Krüpe, “Frauenbilder und -rollen,” in <i>Das achaimenidisch-persische
    Imperium</i>, J. Degen, Ed. Wiesbaden, 2025, pp. 339–347.
  mla: Droß-Krüpe, Kerstin. “Frauenbilder und -rollen.” <i>Das achaimenidisch-persische
    Imperium</i>, edited by J. Degen, 2025, pp. 339–47.
  short: 'K. Droß-Krüpe, in: J. Degen (Ed.), Das achaimenidisch-persische Imperium,
    Wiesbaden, 2025, pp. 339–347.'
date_created: 2026-04-01T13:00:06Z
date_updated: 2026-04-02T15:28:21Z
editor:
- first_name: J.
  full_name: Degen, J.
  last_name: Degen
extern: '1'
language:
- iso: ger
page: 339-347
place: Wiesbaden
publication: Das achaimenidisch-persische Imperium
publication_status: published
quality_controlled: '1'
series_title: Springer Companions Geschichte
status: public
title: Frauenbilder und -rollen
type: book_chapter
user_id: '125711'
year: '2025'
...
---
_id: '65287'
author:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
citation:
  ama: 'Droß-Krüpe K. Frauen als Gewalttäterinnen? Erste Überlegungen auf Basis von
    Petitionen aus dem griechisch-römischen Ägypten. In: Diemke-Horst J, Mörtz T,
    eds. <i>Kriegerinnen im Altertum</i>. Vol 14. IPHIS. Beiträge zur altertumswissenschaftlichen
    Genderforschung. ; 2025:67-81.'
  apa: Droß-Krüpe, K. (2025). Frauen als Gewalttäterinnen? Erste Überlegungen auf
    Basis von Petitionen aus dem griechisch-römischen Ägypten. In J. Diemke-Horst
    &#38; T. Mörtz (Eds.), <i>Kriegerinnen im Altertum</i> (Vol. 14, pp. 67–81).
  bibtex: '@inbook{Droß-Krüpe_2025, place={Trier}, series={IPHIS. Beiträge zur altertumswissenschaftlichen
    Genderforschung}, title={Frauen als Gewalttäterinnen? Erste Überlegungen auf Basis
    von Petitionen aus dem griechisch-römischen Ägypten}, volume={14}, booktitle={Kriegerinnen
    im Altertum}, author={Droß-Krüpe, Kerstin}, editor={Diemke-Horst, J. and Mörtz,
    T.}, year={2025}, pages={67–81}, collection={IPHIS. Beiträge zur altertumswissenschaftlichen
    Genderforschung} }'
  chicago: Droß-Krüpe, Kerstin. “Frauen als Gewalttäterinnen? Erste Überlegungen auf
    Basis von Petitionen aus dem griechisch-römischen Ägypten.” In <i>Kriegerinnen
    im Altertum</i>, edited by J. Diemke-Horst and T. Mörtz, 14:67–81. IPHIS. Beiträge
    zur altertumswissenschaftlichen Genderforschung. Trier, 2025.
  ieee: K. Droß-Krüpe, “Frauen als Gewalttäterinnen? Erste Überlegungen auf Basis
    von Petitionen aus dem griechisch-römischen Ägypten,” in <i>Kriegerinnen im Altertum</i>,
    vol. 14, J. Diemke-Horst and T. Mörtz, Eds. Trier, 2025, pp. 67–81.
  mla: Droß-Krüpe, Kerstin. “Frauen als Gewalttäterinnen? Erste Überlegungen auf Basis
    von Petitionen aus dem griechisch-römischen Ägypten.” <i>Kriegerinnen im Altertum</i>,
    edited by J. Diemke-Horst and T. Mörtz, vol. 14, 2025, pp. 67–81.
  short: 'K. Droß-Krüpe, in: J. Diemke-Horst, T. Mörtz (Eds.), Kriegerinnen im Altertum,
    Trier, 2025, pp. 67–81.'
date_created: 2026-04-01T12:57:23Z
date_updated: 2026-04-02T15:41:30Z
editor:
- first_name: J.
  full_name: Diemke-Horst, J.
  last_name: Diemke-Horst
- first_name: T.
  full_name: Mörtz, T.
  last_name: Mörtz
extern: '1'
intvolume: '        14'
language:
- iso: ger
page: 67-81
place: Trier
publication: Kriegerinnen im Altertum
publication_status: published
quality_controlled: '1'
series_title: IPHIS. Beiträge zur altertumswissenschaftlichen Genderforschung
status: public
title: Frauen als Gewalttäterinnen? Erste Überlegungen auf Basis von Petitionen aus
  dem griechisch-römischen Ägypten
type: book_chapter
user_id: '125711'
volume: 14
year: '2025'
...
---
_id: '65289'
author:
- first_name: Kerstin
  full_name: Droß-Krüpe, Kerstin
  id: '125711'
  last_name: Droß-Krüpe
citation:
  ama: 'Droß-Krüpe K. Atossa. In: Degen J, ed. <i>Das achaimenidisch-persische Imperium</i>.
    Springer Companions Geschichte. ; 2025:375-381.'
  apa: Droß-Krüpe, K. (2025). Atossa. In J. Degen (Ed.), <i>Das achaimenidisch-persische
    Imperium</i> (pp. 375–381).
  bibtex: '@inbook{Droß-Krüpe_2025, place={Wiesbaden}, series={Springer Companions
    Geschichte}, title={Atossa}, booktitle={Das achaimenidisch-persische Imperium},
    author={Droß-Krüpe, Kerstin}, editor={Degen, J.}, year={2025}, pages={375–381},
    collection={Springer Companions Geschichte} }'
  chicago: Droß-Krüpe, Kerstin. “Atossa.” In <i>Das achaimenidisch-persische Imperium</i>,
    edited by J. Degen, 375–81. Springer Companions Geschichte. Wiesbaden, 2025.
  ieee: K. Droß-Krüpe, “Atossa,” in <i>Das achaimenidisch-persische Imperium</i>,
    J. Degen, Ed. Wiesbaden, 2025, pp. 375–381.
  mla: Droß-Krüpe, Kerstin. “Atossa.” <i>Das achaimenidisch-persische Imperium</i>,
    edited by J. Degen, 2025, pp. 375–81.
  short: 'K. Droß-Krüpe, in: J. Degen (Ed.), Das achaimenidisch-persische Imperium,
    Wiesbaden, 2025, pp. 375–381.'
date_created: 2026-04-01T13:02:27Z
date_updated: 2026-04-02T15:41:07Z
editor:
- first_name: J.
  full_name: Degen, J.
  last_name: Degen
extern: '1'
language:
- iso: ger
page: 375-381
place: Wiesbaden
publication: Das achaimenidisch-persische Imperium
publication_status: published
quality_controlled: '1'
series_title: Springer Companions Geschichte
status: public
title: Atossa
type: book_chapter
user_id: '125711'
year: '2025'
...
