---
_id: '44315'
abstract:
- lang: eng
  text: <jats:p>Abstract. Climate change, rare resources and industrial transformation
    processes lead to a rising demand of multi-complex lightweight forming parts,
    especially in aerospace and automotive sectors. In these industries, flow forming
    is often used to produce cylindrical forming parts by reducing the wall thickness
    of tubular semifinished parts, e.g. for the production of hydraulic cylinders
    or gear shafts. The complexity and functionality of flow forming workpieces could
    be significantly increased by locally graded microstructure and geometry structures.
    This enables customized complex hardness distributions at wear surfaces or magnetic
    QR codes for a unique, tamper-proof product identification. The production of
    those complex, 2D (axial and angular) graded forming parts currently depicts a
    great challenge for the process and requires new solutions and strategies. Hence,
    this paper proposes a novel control strategy that includes online measurements
    from an absolute encoder to determine the angular workpiece position. Workpieces
    of AISI 304L stainless steel with 2D-graded structures are successfully manufactured
    using this new strategy and analyzed regarding the possible accuracy and resolution
    of the gradation. At this point, a dependency of the gradations on the sensor
    and actuator dynamics, accuracy and geometry could be noted. It is further evaluated
    how the control strategy could be extended by an observer-based closed-loop property
    control approach to enhance the accuracy of the suggested strategy. </jats:p>
author:
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Julian
  full_name: Rozo Vasquez, Julian
  last_name: Rozo Vasquez
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
citation:
  ama: 'Kersting L, Arian B, Rozo Vasquez J, Trächtler A, Homberg W, Walther F. Control
    strategy for angular gradations by means of the flow forming process. In: <i>Materials
    Research Proceedings</i>. Materials Research Forum LLC; 2023. doi:<a href="https://doi.org/10.21741/9781644902479-220">10.21741/9781644902479-220</a>'
  apa: Kersting, L., Arian, B., Rozo Vasquez, J., Trächtler, A., Homberg, W., &#38;
    Walther, F. (2023). Control strategy for angular gradations by means of the flow
    forming process. <i>Materials Research Proceedings</i>. <a href="https://doi.org/10.21741/9781644902479-220">https://doi.org/10.21741/9781644902479-220</a>
  bibtex: '@inproceedings{Kersting_Arian_Rozo Vasquez_Trächtler_Homberg_Walther_2023,
    title={Control strategy for angular gradations by means of the flow forming process},
    DOI={<a href="https://doi.org/10.21741/9781644902479-220">10.21741/9781644902479-220</a>},
    booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
    LLC}, author={Kersting, Lukas and Arian, Bahman and Rozo Vasquez, Julian and Trächtler,
    Ansgar and Homberg, Werner and Walther, Frank}, year={2023} }'
  chicago: Kersting, Lukas, Bahman Arian, Julian Rozo Vasquez, Ansgar Trächtler, Werner
    Homberg, and Frank Walther. “Control Strategy for Angular Gradations by Means
    of the Flow Forming Process.” In <i>Materials Research Proceedings</i>. Materials
    Research Forum LLC, 2023. <a href="https://doi.org/10.21741/9781644902479-220">https://doi.org/10.21741/9781644902479-220</a>.
  ieee: 'L. Kersting, B. Arian, J. Rozo Vasquez, A. Trächtler, W. Homberg, and F.
    Walther, “Control strategy for angular gradations by means of the flow forming
    process,” 2023, doi: <a href="https://doi.org/10.21741/9781644902479-220">10.21741/9781644902479-220</a>.'
  mla: Kersting, Lukas, et al. “Control Strategy for Angular Gradations by Means of
    the Flow Forming Process.” <i>Materials Research Proceedings</i>, Materials Research
    Forum LLC, 2023, doi:<a href="https://doi.org/10.21741/9781644902479-220">10.21741/9781644902479-220</a>.
  short: 'L. Kersting, B. Arian, J. Rozo Vasquez, A. Trächtler, W. Homberg, F. Walther,
    in: Materials Research Proceedings, Materials Research Forum LLC, 2023.'
date_created: 2023-05-02T09:46:20Z
date_updated: 2023-09-25T10:09:06Z
department:
- _id: '156'
- _id: '241'
- _id: '153'
doi: 10.21741/9781644902479-220
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
  issn:
  - 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Control strategy for angular gradations by means of the flow forming process
type: conference
user_id: '552'
year: '2023'
...
---
_id: '44318'
author:
- first_name: Julian
  full_name: Rozo Vasquez, Julian
  last_name: Rozo Vasquez
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
citation:
  ama: Rozo Vasquez J, Arian B, Kersting L, Walther F, Homberg W, Trächtler A. Detection
    of phase transformation during plastic deformation of metastable austenitic steel
    AISI 304L by means of X-ray diffraction pattern analysis. <i>Metals</i>. Published
    online 2023.
  apa: Rozo Vasquez, J., Arian, B., Kersting, L., Walther, F., Homberg, W., &#38;
    Trächtler, A. (2023). Detection of phase transformation during plastic deformation
    of metastable austenitic steel AISI 304L by means of X-ray diffraction pattern
    analysis. <i>Metals</i>.
  bibtex: '@article{Rozo Vasquez_Arian_Kersting_Walther_Homberg_Trächtler_2023, title={Detection
    of phase transformation during plastic deformation of metastable austenitic steel
    AISI 304L by means of X-ray diffraction pattern analysis}, journal={Metals}, author={Rozo
    Vasquez, Julian and Arian, Bahman and Kersting, Lukas and Walther, Frank and Homberg,
    Werner and Trächtler, Ansgar}, year={2023} }'
  chicago: Rozo Vasquez, Julian, Bahman Arian, Lukas Kersting, Frank Walther, Werner
    Homberg, and Ansgar Trächtler. “Detection of Phase Transformation during Plastic
    Deformation of Metastable Austenitic Steel AISI 304L by Means of X-Ray Diffraction
    Pattern Analysis.” <i>Metals</i>, 2023.
  ieee: J. Rozo Vasquez, B. Arian, L. Kersting, F. Walther, W. Homberg, and A. Trächtler,
    “Detection of phase transformation during plastic deformation of metastable austenitic
    steel AISI 304L by means of X-ray diffraction pattern analysis,” <i>Metals</i>,
    2023.
  mla: Rozo Vasquez, Julian, et al. “Detection of Phase Transformation during Plastic
    Deformation of Metastable Austenitic Steel AISI 304L by Means of X-Ray Diffraction
    Pattern Analysis.” <i>Metals</i>, 2023.
  short: J. Rozo Vasquez, B. Arian, L. Kersting, F. Walther, W. Homberg, A. Trächtler,
    Metals (2023).
date_created: 2023-05-02T10:07:29Z
date_updated: 2023-09-25T10:10:05Z
department:
- _id: '156'
- _id: '241'
- _id: '153'
language:
- iso: eng
publication: Metals
quality_controlled: '1'
status: public
title: Detection of phase transformation during plastic deformation of metastable
  austenitic steel AISI 304L by means of X-ray diffraction pattern analysis
type: journal_article
user_id: '552'
year: '2023'
...
---
_id: '47450'
author:
- first_name: Sara
  full_name: Rezat, Sara
  id: '58338'
  last_name: Rezat
citation:
  ama: 'Rezat S. Konstruktionen in der prozedurenorientierten Schreibdidaktik. In:
    von Heynitz M, Steinmetz, Michael, eds. <i>Die Konstruktion stärken: Ein Handlungsfeld
    der Deutschdidaktik neu betrachtet</i>. Peter Lang; 2023:65-79.'
  apa: 'Rezat, S. (2023). Konstruktionen in der prozedurenorientierten Schreibdidaktik.
    In M. von Heynitz &#38; Steinmetz, Michael (Eds.), <i>Die Konstruktion stärken:
    Ein Handlungsfeld der Deutschdidaktik neu betrachtet</i> (pp. 65–79). Peter Lang.'
  bibtex: '@inbook{Rezat_2023, place={Berlin }, title={Konstruktionen in der prozedurenorientierten
    Schreibdidaktik.}, booktitle={Die Konstruktion stärken: Ein Handlungsfeld der
    Deutschdidaktik neu betrachtet}, publisher={Peter Lang}, author={Rezat, Sara},
    editor={von Heynitz, Martina and Steinmetz, Michael}, year={2023}, pages={65–79}
    }'
  chicago: 'Rezat, Sara. “Konstruktionen in der prozedurenorientierten Schreibdidaktik.”
    In <i>Die Konstruktion stärken: Ein Handlungsfeld der Deutschdidaktik neu betrachtet</i>,
    edited by Martina von Heynitz and Steinmetz, Michael, 65–79. Berlin : Peter Lang,
    2023.'
  ieee: 'S. Rezat, “Konstruktionen in der prozedurenorientierten Schreibdidaktik.,”
    in <i>Die Konstruktion stärken: Ein Handlungsfeld der Deutschdidaktik neu betrachtet</i>,
    M. von Heynitz and Steinmetz, Michael, Eds. Berlin : Peter Lang, 2023, pp. 65–79.'
  mla: 'Rezat, Sara. “Konstruktionen in der prozedurenorientierten Schreibdidaktik.”
    <i>Die Konstruktion stärken: Ein Handlungsfeld der Deutschdidaktik neu betrachtet</i>,
    edited by Martina von Heynitz and Steinmetz, Michael, Peter Lang, 2023, pp. 65–79.'
  short: 'S. Rezat, in: M. von Heynitz, Steinmetz, Michael (Eds.), Die Konstruktion
    stärken: Ein Handlungsfeld der Deutschdidaktik neu betrachtet, Peter Lang, Berlin
    , 2023, pp. 65–79.'
corporate_editor:
- Steinmetz, Michael
date_created: 2023-09-26T14:35:07Z
date_updated: 2023-09-26T14:37:19Z
editor:
- first_name: Martina
  full_name: von Heynitz, Martina
  last_name: von Heynitz
language:
- iso: ger
page: 65-79
place: 'Berlin '
publication: 'Die Konstruktion stärken: Ein Handlungsfeld der Deutschdidaktik neu
  betrachtet'
publication_status: published
publisher: Peter Lang
quality_controlled: '1'
status: public
title: Konstruktionen in der prozedurenorientierten Schreibdidaktik.
type: book_chapter
user_id: '58338'
year: '2023'
...
---
_id: '46067'
abstract:
- lang: eng
  text: '<p>The study investigates two different ways of guiding the addressee of
    an explanation - an explainee, through action demonstration: contrastive and non-contrastive.
    Their effect was tested on attention to specific action elements (goal) as well
    as on event memory. In an eye-tracking experiment, participants were shown different
    motion videos that were either contrastive or non-contrastive with respect to
    the segments of movement presentation. Given that everyday action demonstration
    is often multimodal, the stimuli were created with re- spect to their visual and
    verbal presentation. For visual presentation, a video combined two movements in
    a contrastive (e.g., Up-motion following a Down-motion) or non-contrastive way
    (e.g., two Up-motions following each other). For verbal presentation, each video
    was combined with a sequence of instruction descriptions in the form of negative
    (i.e., contrastive) or assertive (i.e., non-contrastive) guidance. It was found
    that a) attention to the event goal increased for this condition in the later
    time window, and b) participants’ recall of the event was facilitated when a visually
    contrastive motion was combined with a verbal contrast.</p>'
author:
- first_name: Amit
  full_name: Singh, Amit
  id: '91018'
  last_name: Singh
  orcid: 0000-0002-7789-1521
- first_name: Katharina J.
  full_name: Rohlfing, Katharina J.
  id: '50352'
  last_name: Rohlfing
citation:
  ama: 'Singh A, Rohlfing KJ. Contrastiveness in the context of action demonstration:
    an eye-tracking study on its effects on action perception and action recall. In:
    <i>Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)</i>.
    Cognitive Science Society; 2023.'
  apa: 'Singh, A., &#38; Rohlfing, K. J. (2023). Contrastiveness in the context of
    action demonstration: an eye-tracking study on its effects on action perception
    and action recall. <i>Proceedings of the Annual Meeting of the Cognitive Science
    Society 45 (45)</i>. 45th Annual Conference of the Cognitive Science Society,
    Sydney.'
  bibtex: '@inproceedings{Singh_Rohlfing_2023, place={Sydney, Australia}, title={Contrastiveness
    in the context of action demonstration: an eye-tracking study on its effects on
    action perception and action recall}, booktitle={Proceedings of the Annual Meeting
    of the Cognitive Science Society 45 (45)}, publisher={Cognitive Science Society},
    author={Singh, Amit and Rohlfing, Katharina J.}, year={2023} }'
  chicago: 'Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context
    of Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception
    and Action Recall.” In <i>Proceedings of the Annual Meeting of the Cognitive Science
    Society 45 (45)</i>. Sydney, Australia: Cognitive Science Society, 2023.'
  ieee: 'A. Singh and K. J. Rohlfing, “Contrastiveness in the context of action demonstration:
    an eye-tracking study on its effects on action perception and action recall,”
    presented at the 45th Annual Conference of the Cognitive Science Society, Sydney,
    2023.'
  mla: 'Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context of
    Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception
    and Action Recall.” <i>Proceedings of the Annual Meeting of the Cognitive Science
    Society 45 (45)</i>, Cognitive Science Society, 2023.'
  short: 'A. Singh, K.J. Rohlfing, in: Proceedings of the Annual Meeting of the Cognitive
    Science Society 45 (45), Cognitive Science Society, Sydney, Australia, 2023.'
conference:
  location: Sydney
  name: 45th Annual Conference of the Cognitive Science Society
date_created: 2023-07-15T12:16:42Z
date_updated: 2023-09-27T13:51:42Z
department:
- _id: '749'
- _id: '660'
keyword:
- Attention
- negation
- contrastive  guidance
- eye-movements
- action understanding
- event representation
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://escholarship.org/uc/item/2w94t4cv
oa: '1'
place: Sydney, Australia
popular_science: '1'
project:
- _id: '115'
  grant_number: '438445824'
  name: 'TRR 318 - A05: TRR 318 - Echtzeitmessung der Aufmerksamkeit im Mensch-Roboter-Erklärdialog
    (Teilprojekt A05)'
publication: Proceedings of the Annual Meeting of the Cognitive Science Society 45
  (45)
publication_status: published
publisher: Cognitive Science Society
quality_controlled: '1'
related_material:
  record:
  - id: '46067'
    relation: contains
    status: public
status: public
title: 'Contrastiveness in the context of action demonstration: an eye-tracking study
  on its effects on action perception and action recall'
type: conference
user_id: '91018'
year: '2023'
...
---
_id: '42784'
author:
- first_name: Martina
  full_name: Homt, Martina
  id: '11674'
  last_name: Homt
- first_name: Janis
  full_name: Wehde, Janis
  id: '82257'
  last_name: Wehde
  orcid: https://orcid.org/0009-0008-0720-7828
- first_name: Bea
  full_name: Bloh, Bea
  id: '69910'
  last_name: Bloh
citation:
  ama: 'Homt M, Wehde J, Bloh B. Motivationsprofile zum Erwerb pädagogischen Wissens
    im Lehramtsstudium. In: ; 2023.'
  apa: Homt, M., Wehde, J., &#38; Bloh, B. (2023). <i>Motivationsprofile zum Erwerb
    pädagogischen Wissens im Lehramtsstudium</i>. Jahrestagung der Gesellschaft für
    Empirische Bildungsforschung (GEBF), Essen.
  bibtex: '@inproceedings{Homt_Wehde_Bloh_2023, title={Motivationsprofile zum Erwerb
    pädagogischen Wissens im Lehramtsstudium}, author={Homt, Martina and Wehde, Janis
    and Bloh, Bea}, year={2023} }'
  chicago: Homt, Martina, Janis Wehde, and Bea Bloh. “Motivationsprofile Zum Erwerb
    Pädagogischen Wissens Im Lehramtsstudium,” 2023.
  ieee: M. Homt, J. Wehde, and B. Bloh, “Motivationsprofile zum Erwerb pädagogischen
    Wissens im Lehramtsstudium,” presented at the Jahrestagung der Gesellschaft für
    Empirische Bildungsforschung (GEBF), Essen, 2023.
  mla: Homt, Martina, et al. <i>Motivationsprofile Zum Erwerb Pädagogischen Wissens
    Im Lehramtsstudium</i>. 2023.
  short: 'M. Homt, J. Wehde, B. Bloh, in: 2023.'
conference:
  end_date: 2023-03-02
  location: Essen
  name: Jahrestagung der Gesellschaft für Empirische Bildungsforschung (GEBF)
  start_date: 2023-02-28
date_created: 2023-03-06T16:22:40Z
date_updated: 2024-09-14T09:48:10Z
department:
- _id: '36'
- _id: '456'
language:
- iso: eng
quality_controlled: '1'
status: public
title: Motivationsprofile zum Erwerb pädagogischen Wissens im Lehramtsstudium
type: conference
user_id: '82257'
year: '2023'
...
---
_id: '48676'
abstract:
- lang: ger
  text: "Die charakteristische Verbzweitstellung des Deutschen und die sogenannte
    Satzklammer führen bei der Sprachproduktion vieler Lernender zu klassischen Fehlern
    und Frustration. Die Herausforderung für den fremdsprachlichen A1-/A2-Unterricht
    besteht darin, das Phänomen der Verbstellung didaktisch so zu reduzieren, dass
    der Gegenstand zwar nicht unzulässig vereinfacht wird, die DaF-Lernenden aber
    ein leicht handhabbares Modell für die Sprachproduktion zur Verfügung haben, das
    sie auch ohne umfassende linguistische Vorkenntnisse nutzen können. Im vorliegenden
    Beitrag werden wir zeigen, wie eine Vermittlung dieses grammatischen Inhalts durch
    Metaphorisierung und Visualisierung gelingen kann. Dazu untersuchen wir gängige
    Metaphern, die in Lehrmaterial für A1-/A2-Niveau zur Einführung der Verbzweitstellung
    und der Klammerstruktur verwendet werden, und geben einen Überblick über die dort
    eingesetzten Visualisierungen, deren didaktischen Nutzen wir anhand eines von
    uns erstellten Kriterienkatalogs analysieren. Hierzu fassen wir syntaktische Modelle
    wie das Feldermodell, die Dependenz- und die Valenztheorie im\r\nKontext unseres
    Interesses zusammen. Ziel unserer Untersuchung ist es, brauchbare und ausbaufähige
    Modelle zu identifizieren."
article_type: original
author:
- first_name: Theresa
  full_name: Lentfort, Theresa
  id: '102760'
  last_name: Lentfort
- first_name: Silke
  full_name: Mentchen, Silke
  last_name: Mentchen
citation:
  ama: 'Lentfort T, Mentchen S. Show me the verb: Visualisierung von Wortstellungsregeln
    im DaF-Unterricht für die Grundstufe. <i>GfL</i>. 2023;(2):72-97.'
  apa: 'Lentfort, T., &#38; Mentchen, S. (2023). Show me the verb: Visualisierung
    von Wortstellungsregeln im DaF-Unterricht für die Grundstufe. <i>GfL</i>, <i>2</i>,
    72–97.'
  bibtex: '@article{Lentfort_Mentchen_2023, title={Show me the verb: Visualisierung
    von Wortstellungsregeln im DaF-Unterricht für die Grundstufe}, number={2}, journal={GfL},
    author={Lentfort, Theresa and Mentchen, Silke}, year={2023}, pages={72–97} }'
  chicago: 'Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung
    von Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” <i>GfL</i>, no.
    2 (2023): 72–97.'
  ieee: 'T. Lentfort and S. Mentchen, “Show me the verb: Visualisierung von Wortstellungsregeln
    im DaF-Unterricht für die Grundstufe,” <i>GfL</i>, no. 2, pp. 72–97, 2023.'
  mla: 'Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung von
    Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” <i>GfL</i>, no. 2,
    2023, pp. 72–97.'
  short: T. Lentfort, S. Mentchen, GfL (2023) 72–97.
date_created: 2023-11-07T16:28:21Z
date_updated: 2024-10-14T07:51:15Z
issue: '2'
keyword:
- A1-/A2-Unterricht
- Verbstellung
- Satzklammer
- Metapher
- Visualisierung
- Lerntheorie
- Kognitive Linguistik
- Lehrmaterial
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: http://gfl-journal.de/wp-content/uploads/2024/07/20230206-Lentfort-Mentchen.pdf
oa: '1'
page: 72 - 97
publication: GfL
publication_status: published
quality_controlled: '1'
status: public
title: 'Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht
  für die Grundstufe'
type: journal_article
user_id: '102760'
year: '2023'
...
---
_id: '34171'
abstract:
- lang: eng
  text: State estimation when only a partial model of a considered system is available
    remains a major challenge in many engineering fields. This work proposes a joint,
    square-root unscented Kalman filter to estimate states and model uncertainties
    simultaneously by linear combinations of physics-motivated library functions.
    Using a sparsity promoting approach, a selection of those linear combinations
    is chosen and thus an interpretable model can be extracted. Results indicate a
    small estimation error compared to a traditional square-root unscented Kalman
    filter and exhibit the enhancement of physically meaningful models.
author:
- first_name: Ricarda-Samantha
  full_name: Götte, Ricarda-Samantha
  id: '43992'
  last_name: Götte
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
citation:
  ama: 'Götte R-S, Timmermann J. Estimating States and Model Uncertainties Jointly
    by a Sparsity Promoting UKF. In: <i>12th IFAC Symposium on Nonlinear Control Systems
    (NOLCOS 2022)</i>. Vol 56. ; 2023:85-90. doi:<a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>'
  apa: Götte, R.-S., &#38; Timmermann, J. (2023). Estimating States and Model Uncertainties
    Jointly by a Sparsity Promoting UKF. <i>12th IFAC Symposium on Nonlinear Control
    Systems (NOLCOS 2022)</i>, <i>56</i>(1), 85–90. <a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>
  bibtex: '@inproceedings{Götte_Timmermann_2023, title={Estimating States and Model
    Uncertainties Jointly by a Sparsity Promoting UKF}, volume={56}, DOI={<a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>},
    number={1}, booktitle={12th IFAC Symposium on Nonlinear Control Systems (NOLCOS
    2022)}, author={Götte, Ricarda-Samantha and Timmermann, Julia}, year={2023}, pages={85–90}
    }'
  chicago: Götte, Ricarda-Samantha, and Julia Timmermann. “Estimating States and Model
    Uncertainties Jointly by a Sparsity Promoting UKF.” In <i>12th IFAC Symposium
    on Nonlinear Control Systems (NOLCOS 2022)</i>, 56:85–90, 2023. <a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>.
  ieee: 'R.-S. Götte and J. Timmermann, “Estimating States and Model Uncertainties
    Jointly by a Sparsity Promoting UKF,” in <i>12th IFAC Symposium on Nonlinear Control
    Systems (NOLCOS 2022)</i>, Canberra, Australien, 2023, vol. 56, no. 1, pp. 85–90,
    doi: <a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>.'
  mla: Götte, Ricarda-Samantha, and Julia Timmermann. “Estimating States and Model
    Uncertainties Jointly by a Sparsity Promoting UKF.” <i>12th IFAC Symposium on
    Nonlinear Control Systems (NOLCOS 2022)</i>, vol. 56, no. 1, 2023, pp. 85–90,
    doi:<a href="https://doi.org/10.1016/j.ifacol.2023.02.015">https://doi.org/10.1016/j.ifacol.2023.02.015</a>.
  short: 'R.-S. Götte, J. Timmermann, in: 12th IFAC Symposium on Nonlinear Control
    Systems (NOLCOS 2022), 2023, pp. 85–90.'
conference:
  end_date: 2023-01-06
  location: Canberra, Australien
  name: 12th IFAC Symposium on Nonlinear Control Systems NOLCOS 2022
  start_date: 2023-01-04
date_created: 2022-12-01T07:17:00Z
date_updated: 2024-11-13T08:43:05Z
department:
- _id: '153'
- _id: '880'
doi: https://doi.org/10.1016/j.ifacol.2023.02.015
intvolume: '        56'
issue: '1'
keyword:
- joint estimation
- unscented transform
- Kalman filter
- sparsity
- data-driven
- compressed sensing
language:
- iso: eng
page: 85-90
publication: 12th IFAC Symposium on Nonlinear Control Systems (NOLCOS 2022)
quality_controlled: '1'
status: public
title: Estimating States and Model Uncertainties Jointly by a Sparsity Promoting UKF
type: conference
user_id: '43992'
volume: 56
year: '2023'
...
---
_id: '44326'
abstract:
- lang: eng
  text: "Low-quality models that miss relevant dynamics lead to major challenges in
    modelbased\r\nstate estimation. We address this issue by simultaneously estimating
    the system’s states\r\nand its model inaccuracies by a square root unscented Kalman
    filter (SRUKF). Concretely,\r\nwe augment the state with the parameter vector
    of a linear combination containing suitable\r\nfunctions that approximate the
    lacking dynamics. Presuming that only a few dynamical terms\r\nare relevant, the
    parameter vector is claimed to be sparse. In Bayesian setting, properties like\r\nsparsity
    are expressed by a prior distribution. One common choice for sparsity is a Laplace\r\ndistribution.
    However, due to disadvantages of a Laplacian prior in regards to the SRUKF,\r\nthe
    regularized horseshoe distribution, a Gaussian that approximately features sparsity,
    is\r\napplied instead. Results exhibit small estimation errors with model improvements
    detected by\r\nan automated model reduction technique."
author:
- first_name: Ricarda-Samantha
  full_name: Götte, Ricarda-Samantha
  id: '43992'
  last_name: Götte
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
citation:
  ama: 'Götte R-S, Timmermann J. Approximating a Laplacian Prior for Joint State and
    Model Estimation within an UKF. In: <i>IFAC-PapersOnLine</i>. Vol 56. ; 2023:869-874.'
  apa: Götte, R.-S., &#38; Timmermann, J. (2023). Approximating a Laplacian Prior
    for Joint State and Model Estimation within an UKF. <i>IFAC-PapersOnLine</i>,
    <i>56</i>(2), 869–874.
  bibtex: '@inproceedings{Götte_Timmermann_2023, title={Approximating a Laplacian
    Prior for Joint State and Model Estimation within an UKF}, volume={56}, number={2},
    booktitle={IFAC-PapersOnLine}, author={Götte, Ricarda-Samantha and Timmermann,
    Julia}, year={2023}, pages={869–874} }'
  chicago: Götte, Ricarda-Samantha, and Julia Timmermann. “Approximating a Laplacian
    Prior for Joint State and Model Estimation within an UKF.” In <i>IFAC-PapersOnLine</i>,
    56:869–74, 2023.
  ieee: R.-S. Götte and J. Timmermann, “Approximating a Laplacian Prior for Joint
    State and Model Estimation within an UKF,” in <i>IFAC-PapersOnLine</i>, Yokohama,
    Japan, 2023, vol. 56, no. 2, pp. 869–874.
  mla: Götte, Ricarda-Samantha, and Julia Timmermann. “Approximating a Laplacian Prior
    for Joint State and Model Estimation within an UKF.” <i>IFAC-PapersOnLine</i>,
    vol. 56, no. 2, 2023, pp. 869–74.
  short: 'R.-S. Götte, J. Timmermann, in: IFAC-PapersOnLine, 2023, pp. 869–874.'
conference:
  end_date: 2023-07-14
  location: Yokohama, Japan
  name: 22nd IFAC World Congress
  start_date: 2023-07-09
date_created: 2023-05-02T15:16:43Z
date_updated: 2024-11-13T08:42:37Z
department:
- _id: '153'
- _id: '880'
intvolume: '        56'
issue: '2'
keyword:
- joint estimation
- unscented Kalman filter
- sparsity
- Laplacian prior
- regularized horseshoe
- principal component analysis
language:
- iso: eng
page: 869-874
publication: IFAC-PapersOnLine
quality_controlled: '1'
status: public
title: Approximating a Laplacian Prior for Joint State and Model Estimation within
  an UKF
type: conference
user_id: '43992'
volume: 56
year: '2023'
...
---
_id: '48482'
author:
- first_name: Ricarda-Samantha
  full_name: Götte, Ricarda-Samantha
  id: '43992'
  last_name: Götte
- first_name: Jo Noel
  full_name: Klusmann, Jo Noel
  last_name: Klusmann
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
citation:
  ama: 'Götte R-S, Klusmann JN, Timmermann J. Data-driven identification of disturbances
    using a sliding mode observer. In: <i>Proceedings - 33. Workshop Computational
    Intelligence: Berlin, 23.-24. November 2023</i>. ; 2023:113-123. doi:<a href="https://doi.org/10.5445/KSP/1000162754">10.5445/KSP/1000162754</a>'
  apa: 'Götte, R.-S., Klusmann, J. N., &#38; Timmermann, J. (2023). Data-driven identification
    of disturbances using a sliding mode observer. <i>Proceedings - 33. Workshop Computational
    Intelligence: Berlin, 23.-24. November 2023</i>, 113–123. <a href="https://doi.org/10.5445/KSP/1000162754">https://doi.org/10.5445/KSP/1000162754</a>'
  bibtex: '@inproceedings{Götte_Klusmann_Timmermann_2023, title={Data-driven identification
    of disturbances using a sliding mode observer}, DOI={<a href="https://doi.org/10.5445/KSP/1000162754">10.5445/KSP/1000162754</a>},
    booktitle={Proceedings - 33. Workshop Computational Intelligence: Berlin, 23.-24.
    November 2023}, author={Götte, Ricarda-Samantha and Klusmann, Jo Noel and Timmermann,
    Julia}, year={2023}, pages={113–123} }'
  chicago: 'Götte, Ricarda-Samantha, Jo Noel Klusmann, and Julia Timmermann. “Data-Driven
    Identification of Disturbances Using a Sliding Mode Observer.” In <i>Proceedings
    - 33. Workshop Computational Intelligence: Berlin, 23.-24. November 2023</i>,
    113–23, 2023. <a href="https://doi.org/10.5445/KSP/1000162754">https://doi.org/10.5445/KSP/1000162754</a>.'
  ieee: 'R.-S. Götte, J. N. Klusmann, and J. Timmermann, “Data-driven identification
    of disturbances using a sliding mode observer,” in <i>Proceedings - 33. Workshop
    Computational Intelligence: Berlin, 23.-24. November 2023</i>, Berlin, Germany,
    2023, pp. 113–123, doi: <a href="https://doi.org/10.5445/KSP/1000162754">10.5445/KSP/1000162754</a>.'
  mla: 'Götte, Ricarda-Samantha, et al. “Data-Driven Identification of Disturbances
    Using a Sliding Mode Observer.” <i>Proceedings - 33. Workshop Computational Intelligence:
    Berlin, 23.-24. November 2023</i>, 2023, pp. 113–23, doi:<a href="https://doi.org/10.5445/KSP/1000162754">10.5445/KSP/1000162754</a>.'
  short: 'R.-S. Götte, J.N. Klusmann, J. Timmermann, in: Proceedings - 33. Workshop
    Computational Intelligence: Berlin, 23.-24. November 2023, 2023, pp. 113–123.'
conference:
  end_date: 2023-11-24
  location: Berlin, Germany
  name: 33. Workshop Computational Intelligence
  start_date: 2023-11-23
date_created: 2023-10-26T08:11:25Z
date_updated: 2024-11-13T08:42:53Z
department:
- _id: '153'
- _id: '880'
doi: 10.5445/KSP/1000162754
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.ksp.kit.edu/site/books/e/10.5445/KSP/1000162754/
oa: '1'
page: 113-123
publication: 'Proceedings - 33. Workshop Computational Intelligence: Berlin, 23.-24.
  November 2023'
quality_controlled: '1'
status: public
title: Data-driven identification of disturbances using a sliding mode observer
type: conference
user_id: '43992'
year: '2023'
...
---
_id: '48476'
author:
- first_name: Michael
  full_name: Hesse, Michael
  id: '29222'
  last_name: Hesse
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
citation:
  ama: 'Hesse M, Timmermann J, Trächtler A. Hybrid Optimal Control for Dynamical Systems
    using Gaussian Process Regression and Unscented Transform<sup>*</sup>. In: <i>2023
    European Control Conference (ECC)</i>. IEEE; 2023. doi:<a href="https://doi.org/10.23919/ecc57647.2023.10178368">10.23919/ecc57647.2023.10178368</a>'
  apa: Hesse, M., Timmermann, J., &#38; Trächtler, A. (2023). Hybrid Optimal Control
    for Dynamical Systems using Gaussian Process Regression and Unscented Transform<sup>*</sup>.
    <i>2023 European Control Conference (ECC)</i>. <a href="https://doi.org/10.23919/ecc57647.2023.10178368">https://doi.org/10.23919/ecc57647.2023.10178368</a>
  bibtex: '@inproceedings{Hesse_Timmermann_Trächtler_2023, title={Hybrid Optimal Control
    for Dynamical Systems using Gaussian Process Regression and Unscented Transform<sup>*</sup>},
    DOI={<a href="https://doi.org/10.23919/ecc57647.2023.10178368">10.23919/ecc57647.2023.10178368</a>},
    booktitle={2023 European Control Conference (ECC)}, publisher={IEEE}, author={Hesse,
    Michael and Timmermann, Julia and Trächtler, Ansgar}, year={2023} }'
  chicago: Hesse, Michael, Julia Timmermann, and Ansgar Trächtler. “Hybrid Optimal
    Control for Dynamical Systems Using Gaussian Process Regression and Unscented
    Transform<sup>*</sup>.” In <i>2023 European Control Conference (ECC)</i>. IEEE,
    2023. <a href="https://doi.org/10.23919/ecc57647.2023.10178368">https://doi.org/10.23919/ecc57647.2023.10178368</a>.
  ieee: 'M. Hesse, J. Timmermann, and A. Trächtler, “Hybrid Optimal Control for Dynamical
    Systems using Gaussian Process Regression and Unscented Transform<sup>*</sup>,”
    2023, doi: <a href="https://doi.org/10.23919/ecc57647.2023.10178368">10.23919/ecc57647.2023.10178368</a>.'
  mla: Hesse, Michael, et al. “Hybrid Optimal Control for Dynamical Systems Using
    Gaussian Process Regression and Unscented Transform<sup>*</sup>.” <i>2023 European
    Control Conference (ECC)</i>, IEEE, 2023, doi:<a href="https://doi.org/10.23919/ecc57647.2023.10178368">10.23919/ecc57647.2023.10178368</a>.
  short: 'M. Hesse, J. Timmermann, A. Trächtler, in: 2023 European Control Conference
    (ECC), IEEE, 2023.'
date_created: 2023-10-25T13:56:34Z
date_updated: 2024-11-13T08:43:40Z
department:
- _id: '153'
- _id: '880'
doi: 10.23919/ecc57647.2023.10178368
language:
- iso: eng
publication: 2023 European Control Conference (ECC)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Hybrid Optimal Control for Dynamical Systems using Gaussian Process Regression
  and Unscented Transform<sup>*</sup>
type: conference
user_id: '82875'
year: '2023'
...
---
_id: '50070'
author:
- first_name: Annika
  full_name: Junker, Annika
  id: '41470'
  last_name: Junker
  orcid: 0009-0002-6475-2503
- first_name: Keno Egon Friedrich
  full_name: Pape, Keno Egon Friedrich
  id: '52024'
  last_name: Pape
- first_name: Julia
  full_name: Timmermann, Julia
  id: '15402'
  last_name: Timmermann
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
citation:
  ama: Junker A, Pape KEF, Timmermann J, Trächtler A. Adaptive Koopman-Based Models
    for Holistic Controller and Observer Design. <i>IFAC-PapersOnLine</i>. 2023;56(3):625-630.
    doi:<a href="https://doi.org/10.1016/j.ifacol.2023.12.094">10.1016/j.ifacol.2023.12.094</a>
  apa: Junker, A., Pape, K. E. F., Timmermann, J., &#38; Trächtler, A. (2023). Adaptive
    Koopman-Based Models for Holistic Controller and Observer Design. <i>IFAC-PapersOnLine</i>,
    <i>56</i>(3), 625–630. <a href="https://doi.org/10.1016/j.ifacol.2023.12.094">https://doi.org/10.1016/j.ifacol.2023.12.094</a>
  bibtex: '@article{Junker_Pape_Timmermann_Trächtler_2023, title={Adaptive Koopman-Based
    Models for Holistic Controller and Observer Design}, volume={56}, DOI={<a href="https://doi.org/10.1016/j.ifacol.2023.12.094">10.1016/j.ifacol.2023.12.094</a>},
    number={3}, journal={IFAC-PapersOnLine}, publisher={Elsevier BV}, author={Junker,
    Annika and Pape, Keno Egon Friedrich and Timmermann, Julia and Trächtler, Ansgar},
    year={2023}, pages={625–630} }'
  chicago: 'Junker, Annika, Keno Egon Friedrich Pape, Julia Timmermann, and Ansgar
    Trächtler. “Adaptive Koopman-Based Models for Holistic Controller and Observer
    Design.” <i>IFAC-PapersOnLine</i> 56, no. 3 (2023): 625–30. <a href="https://doi.org/10.1016/j.ifacol.2023.12.094">https://doi.org/10.1016/j.ifacol.2023.12.094</a>.'
  ieee: 'A. Junker, K. E. F. Pape, J. Timmermann, and A. Trächtler, “Adaptive Koopman-Based
    Models for Holistic Controller and Observer Design,” <i>IFAC-PapersOnLine</i>,
    vol. 56, no. 3, pp. 625–630, 2023, doi: <a href="https://doi.org/10.1016/j.ifacol.2023.12.094">10.1016/j.ifacol.2023.12.094</a>.'
  mla: Junker, Annika, et al. “Adaptive Koopman-Based Models for Holistic Controller
    and Observer Design.” <i>IFAC-PapersOnLine</i>, vol. 56, no. 3, Elsevier BV, 2023,
    pp. 625–30, doi:<a href="https://doi.org/10.1016/j.ifacol.2023.12.094">10.1016/j.ifacol.2023.12.094</a>.
  short: A. Junker, K.E.F. Pape, J. Timmermann, A. Trächtler, IFAC-PapersOnLine 56
    (2023) 625–630.
date_created: 2023-12-25T11:55:19Z
date_updated: 2024-11-13T12:28:18Z
department:
- _id: '153'
- _id: '880'
doi: 10.1016/j.ifacol.2023.12.094
intvolume: '        56'
issue: '3'
keyword:
- General Medicine
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.ifacol.2023.12.094
oa: '1'
page: 625-630
project:
- _id: '690'
  name: 'DART: Datengetriebene Methoden in der Regelungstechnik'
publication: IFAC-PapersOnLine
publication_identifier:
  issn:
  - 2405-8963
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Adaptive Koopman-Based Models for Holistic Controller and Observer Design
type: journal_article
user_id: '41470'
volume: 56
year: '2023'
...
---
_id: '40607'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>Teachers’ in-depth diagnostic thinking
    has been shown to be crucial for student-centered teaching as they need to perceive
    and interpret students’ understanding for well-informed decision-making on adaptive
    teaching practices. The paper presents a content-related approach to analyzing
    diagnostic thinking processes with respect to the mathematical knowledge elements
    that prospective teachers identify as students’ resources and obstacles. Prospective
    teachers’ challenge is that some relevant knowledge elements first have to be
    unpacked, because compact concepts (such as the place value concept) or procedures
    (such as for multi-digit multiplication) comprise several smaller knowledge elements
    (such as the positional property) that have to be made explicit for students to
    foster their learning processes adequately. Our study examines what knowledge
    elements prospective teachers perceive and interpret in a transcript vignettes
    on multi-digit multiplication (of decimal and natural numbers) and its underlying
    basic arithmetic concepts (place value understanding and meaning of multiplication)
    in written diagnostic judgments on students’ resources and obstacles (<jats:italic>N</jats:italic> = 196).
    A comparative design within the vignette is used to investigate how far the process
    of perceiving can be supported by thematic cues. The analysis reveals that those
    knowledge elements cued in the vignette by being already unpacked and explicitly
    addressed are perceived and interpreted more often (but with lower correctness)
    than those that are uncued and therefore have to be unpacked by the prospective
    teachers themselves. This confirms the need to prepare prospective teachers for
    unpacking mathematical concepts themselves.</jats:p>
author:
- first_name: Jennifer
  full_name: Dröse, Jennifer
  last_name: Dröse
- first_name: Susanne
  full_name: Prediger, Susanne
  last_name: Prediger
citation:
  ama: 'Dröse J, Prediger S. Prospective Teachers’ Diagnostic Thinking on Students’
    Understanding of Multi-Digit Multiplication: A Content-Related Analysis on Unpacking
    of Knowledge Elements. <i>Journal für Mathematik-Didaktik</i>. Published online
    2023. doi:<a href="https://doi.org/10.1007/s13138-022-00214-w">10.1007/s13138-022-00214-w</a>'
  apa: 'Dröse, J., &#38; Prediger, S. (2023). Prospective Teachers’ Diagnostic Thinking
    on Students’ Understanding of Multi-Digit Multiplication: A Content-Related Analysis
    on Unpacking of Knowledge Elements. <i>Journal Für Mathematik-Didaktik</i>. <a
    href="https://doi.org/10.1007/s13138-022-00214-w">https://doi.org/10.1007/s13138-022-00214-w</a>'
  bibtex: '@article{Dröse_Prediger_2023, title={Prospective Teachers’ Diagnostic Thinking
    on Students’ Understanding of Multi-Digit Multiplication: A Content-Related Analysis
    on Unpacking of Knowledge Elements}, DOI={<a href="https://doi.org/10.1007/s13138-022-00214-w">10.1007/s13138-022-00214-w</a>},
    journal={Journal für Mathematik-Didaktik}, publisher={Springer Science and Business
    Media LLC}, author={Dröse, Jennifer and Prediger, Susanne}, year={2023} }'
  chicago: 'Dröse, Jennifer, and Susanne Prediger. “Prospective Teachers’ Diagnostic
    Thinking on Students’ Understanding of Multi-Digit Multiplication: A Content-Related
    Analysis on Unpacking of Knowledge Elements.” <i>Journal Für Mathematik-Didaktik</i>,
    2023. <a href="https://doi.org/10.1007/s13138-022-00214-w">https://doi.org/10.1007/s13138-022-00214-w</a>.'
  ieee: 'J. Dröse and S. Prediger, “Prospective Teachers’ Diagnostic Thinking on Students’
    Understanding of Multi-Digit Multiplication: A Content-Related Analysis on Unpacking
    of Knowledge Elements,” <i>Journal für Mathematik-Didaktik</i>, 2023, doi: <a
    href="https://doi.org/10.1007/s13138-022-00214-w">10.1007/s13138-022-00214-w</a>.'
  mla: 'Dröse, Jennifer, and Susanne Prediger. “Prospective Teachers’ Diagnostic Thinking
    on Students’ Understanding of Multi-Digit Multiplication: A Content-Related Analysis
    on Unpacking of Knowledge Elements.” <i>Journal Für Mathematik-Didaktik</i>, Springer
    Science and Business Media LLC, 2023, doi:<a href="https://doi.org/10.1007/s13138-022-00214-w">10.1007/s13138-022-00214-w</a>.'
  short: J. Dröse, S. Prediger, Journal Für Mathematik-Didaktik (2023).
date_created: 2023-01-27T18:47:24Z
date_updated: 2025-01-15T08:36:09Z
department:
- _id: '98'
doi: 10.1007/s13138-022-00214-w
keyword:
- Education
- General Mathematics
language:
- iso: eng
publication: Journal für Mathematik-Didaktik
publication_identifier:
  issn:
  - 0173-5322
  - 1869-2699
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: 'Prospective Teachers’ Diagnostic Thinking on Students’ Understanding of Multi-Digit
  Multiplication: A Content-Related Analysis on Unpacking of Knowledge Elements'
type: journal_article
user_id: '85820'
year: '2023'
...
---
_id: '45374'
author:
- first_name: S.
  full_name: Prediger, S.
  last_name: Prediger
- first_name: Jennifer
  full_name: Dröse, Jennifer
  id: '85820'
  last_name: Dröse
- first_name: R.
  full_name: Stahnke, R.
  last_name: Stahnke
- first_name: C.
  full_name: Ademmer, C.
  last_name: Ademmer
citation:
  ama: 'Prediger S, Dröse J, Stahnke R, Ademmer C. Teacher expertise for fostering
    at-risk students’ understanding of basic concepts: conceptual model and evidence
    for growth. <i>Journal of Mathematics Teacher Education</i>. Published online
    2023. doi:<a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>'
  apa: 'Prediger, S., Dröse, J., Stahnke, R., &#38; Ademmer, C. (2023). Teacher expertise
    for fostering at-risk students’ understanding of basic concepts: conceptual model
    and evidence for growth. <i>Journal of Mathematics Teacher Education</i>. <a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>'
  bibtex: '@article{Prediger_Dröse_Stahnke_Ademmer_2023, title={Teacher expertise
    for fostering at-risk students’ understanding of basic concepts: conceptual model
    and evidence for growth}, DOI={<a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>},
    journal={Journal of Mathematics Teacher Education}, author={Prediger, S. and Dröse,
    Jennifer and Stahnke, R. and Ademmer, C.}, year={2023} }'
  chicago: 'Prediger, S., Jennifer Dröse, R. Stahnke, and C. Ademmer. “Teacher Expertise
    for Fostering At-Risk Students’ Understanding of Basic Concepts: Conceptual Model
    and Evidence for Growth.” <i>Journal of Mathematics Teacher Education</i>, 2023.
    <a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>.'
  ieee: 'S. Prediger, J. Dröse, R. Stahnke, and C. Ademmer, “Teacher expertise for
    fostering at-risk students’ understanding of basic concepts: conceptual model
    and evidence for growth,” <i>Journal of Mathematics Teacher Education</i>, 2023,
    doi: <a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>.'
  mla: 'Prediger, S., et al. “Teacher Expertise for Fostering At-Risk Students’ Understanding
    of Basic Concepts: Conceptual Model and Evidence for Growth.” <i>Journal of Mathematics
    Teacher Education</i>, 2023, doi:<a href="https://doi.org/10.1007/s10857-022-09538-3">https://doi.org/10.1007/s10857-022-09538-3</a>.'
  short: S. Prediger, J. Dröse, R. Stahnke, C. Ademmer, Journal of Mathematics Teacher
    Education (2023).
date_created: 2023-05-31T06:27:51Z
date_updated: 2025-01-15T08:34:36Z
department:
- _id: '98'
doi: https://doi.org/10.1007/s10857-022-09538-3
language:
- iso: eng
publication: Journal of Mathematics Teacher Education
quality_controlled: '1'
status: public
title: 'Teacher expertise for fostering at-risk students’ understanding of basic concepts:
  conceptual model and evidence for growth'
type: journal_article
user_id: '85820'
year: '2023'
...
---
_id: '35831'
abstract:
- lang: ger
  text: "Videografien eigenen Unterrichts sind ein mögliches methodisches Werkzeug
    zur Förderung der professionellen Kompetenz angehender Lehrkräfte, das allerdings
    innerhalb der Lehramtsausbildung noch nicht breit implementiert\r\nist. Ein möglicher
    Grund hierfür könnte neben organisatorischen Herausforderungen auch in einer geringen
    Akzeptanz von Eigenvideografien durch Lehramtsstudierende liegen. Um besser abschätzen
    zu können, mit welchen Voraussetzungen affektiv-emotionaler Art bei einer breiteren
    Implementierung im Lehramtsstudium gerechnet werden kann, wurden N = 938 Lehramtsstudierende
    im Masterstudium an der Universität Paderborn zu ihren Emotionen und Bereitschaften
    zur Arbeit mit Eigenvideografien befragt. Dabei wurde auch erfasst, wie sich diese
    je nach bestehenden\r\nErfahrungen zur Arbeit mit Videografien unterscheiden.
    In den Ergebnissen zeigen sich kaum affektiv-emotionale Reaktionen zur Eigenvideografie,
    und wenn, vor allem Gefühle der Unsicherheit. Zu beachten ist, dass zwar bei gut
    der Hälfte der Studierenden eine eher hohe generelle Bereitschaft zur Eigenvideografie
    besteht, eine konkrete Intention bzw. eine konkrete Volition zur Videografie aber
    geringer ist. Die ca. 10 % der Studierenden mit Eigenvideografieerfahrung im Studium
    zeigen erwartungsgemäß höhere Bereitschaften, aber unerwartet keine signifikant
    positiveren Emotionen. Insgesamt verdeutlichen die Ergebnisse, dass bzgl. der
    Akzeptanz der Studierenden ein höheres Potenzial zur Implementation von Eigenvideografien
    im Studium vorliegt, als aktuell ausgeschöpft wird."
article_type: original
author:
- first_name: Christoph
  full_name: Vogelsang, Christoph
  id: '4245'
  last_name: Vogelsang
  orcid: 0000-0002-5804-1855
- first_name: Pascal
  full_name: Pollmeier, Pascal
  id: '44191'
  last_name: Pollmeier
- first_name: Theresa
  full_name: Gockeln, Theresa
  last_name: Gockeln
- first_name: Tim
  full_name: Rogge, Tim
  last_name: Rogge
citation:
  ama: Vogelsang C, Pollmeier P, Gockeln T, Rogge T. Zu unangenehm, zu viel Aufwand
    oder keine Möglichkeit? – Emotionen und Bereitschaft von Lehramtsstudierenden
    zur Videografie eigenen Unterrichts. <i>Zeitschrift für Bildungsforschung</i>.
    2023;13:7-31. doi:<a href="https://doi.org/10.1007/s35834-022-00378-y">10.1007/s35834-022-00378-y</a>
  apa: Vogelsang, C., Pollmeier, P., Gockeln, T., &#38; Rogge, T. (2023). Zu unangenehm,
    zu viel Aufwand oder keine Möglichkeit? – Emotionen und Bereitschaft von Lehramtsstudierenden
    zur Videografie eigenen Unterrichts. <i>Zeitschrift für Bildungsforschung</i>,
    <i>13</i>, 7–31. <a href="https://doi.org/10.1007/s35834-022-00378-y">https://doi.org/10.1007/s35834-022-00378-y</a>
  bibtex: '@article{Vogelsang_Pollmeier_Gockeln_Rogge_2023, title={Zu unangenehm,
    zu viel Aufwand oder keine Möglichkeit? – Emotionen und Bereitschaft von Lehramtsstudierenden
    zur Videografie eigenen Unterrichts}, volume={13}, DOI={<a href="https://doi.org/10.1007/s35834-022-00378-y">10.1007/s35834-022-00378-y</a>},
    journal={Zeitschrift für Bildungsforschung}, publisher={Springer}, author={Vogelsang,
    Christoph and Pollmeier, Pascal and Gockeln, Theresa and Rogge, Tim}, year={2023},
    pages={7–31} }'
  chicago: 'Vogelsang, Christoph, Pascal Pollmeier, Theresa Gockeln, and Tim Rogge.
    “Zu unangenehm, zu viel Aufwand oder keine Möglichkeit? – Emotionen und Bereitschaft
    von Lehramtsstudierenden zur Videografie eigenen Unterrichts.” <i>Zeitschrift
    für Bildungsforschung</i> 13 (2023): 7–31. <a href="https://doi.org/10.1007/s35834-022-00378-y">https://doi.org/10.1007/s35834-022-00378-y</a>.'
  ieee: 'C. Vogelsang, P. Pollmeier, T. Gockeln, and T. Rogge, “Zu unangenehm, zu
    viel Aufwand oder keine Möglichkeit? – Emotionen und Bereitschaft von Lehramtsstudierenden
    zur Videografie eigenen Unterrichts,” <i>Zeitschrift für Bildungsforschung</i>,
    vol. 13, pp. 7–31, 2023, doi: <a href="https://doi.org/10.1007/s35834-022-00378-y">10.1007/s35834-022-00378-y</a>.'
  mla: Vogelsang, Christoph, et al. “Zu unangenehm, zu viel Aufwand oder keine Möglichkeit?
    – Emotionen und Bereitschaft von Lehramtsstudierenden zur Videografie eigenen
    Unterrichts.” <i>Zeitschrift für Bildungsforschung</i>, vol. 13, Springer, 2023,
    pp. 7–31, doi:<a href="https://doi.org/10.1007/s35834-022-00378-y">10.1007/s35834-022-00378-y</a>.
  short: C. Vogelsang, P. Pollmeier, T. Gockeln, T. Rogge, Zeitschrift für Bildungsforschung
    13 (2023) 7–31.
date_created: 2023-01-10T13:06:03Z
date_updated: 2025-01-17T11:33:44Z
department:
- _id: '33'
- _id: '386'
- _id: '586'
doi: 10.1007/s35834-022-00378-y
intvolume: '        13'
keyword:
- Lehrerbildung
- Videografie
- Praxissemester
- Emotionen
- Akzeptanz
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://link.springer.com/article/10.1007/s35834-022-00378-y#citeas
oa: '1'
page: 7-31
publication: Zeitschrift für Bildungsforschung
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Zu unangenehm, zu viel Aufwand oder keine Möglichkeit? – Emotionen und Bereitschaft
  von Lehramtsstudierenden zur Videografie eigenen Unterrichts
type: journal_article
user_id: '44191'
volume: 13
year: '2023'
...
---
_id: '52614'
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: Mathias
  full_name: Bobbert, Mathias
  id: '7850'
  last_name: Bobbert
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Bielak CR, Böhnke M, Bobbert M, Meschut G. Numerical Investigation of the
    Coupled Friction Behavior in the Clinching Process Chain. In: <i>Lecture Notes
    in Mechanical Engineering</i>. Springer Nature Switzerland; 2023. doi:<a href="https://doi.org/10.1007/978-3-031-41341-4_15">10.1007/978-3-031-41341-4_15</a>'
  apa: Bielak, C. R., Böhnke, M., Bobbert, M., &#38; Meschut, G. (2023). Numerical
    Investigation of the Coupled Friction Behavior in the Clinching Process Chain.
    In <i>Lecture Notes in Mechanical Engineering</i>. Springer Nature Switzerland.
    <a href="https://doi.org/10.1007/978-3-031-41341-4_15">https://doi.org/10.1007/978-3-031-41341-4_15</a>
  bibtex: '@inbook{Bielak_Böhnke_Bobbert_Meschut_2023, place={Cham}, title={Numerical
    Investigation of the Coupled Friction Behavior in the Clinching Process Chain},
    DOI={<a href="https://doi.org/10.1007/978-3-031-41341-4_15">10.1007/978-3-031-41341-4_15</a>},
    booktitle={Lecture Notes in Mechanical Engineering}, publisher={Springer Nature
    Switzerland}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias
    and Meschut, Gerson}, year={2023} }'
  chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut.
    “Numerical Investigation of the Coupled Friction Behavior in the Clinching Process
    Chain.” In <i>Lecture Notes in Mechanical Engineering</i>. Cham: Springer Nature
    Switzerland, 2023. <a href="https://doi.org/10.1007/978-3-031-41341-4_15">https://doi.org/10.1007/978-3-031-41341-4_15</a>.'
  ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Numerical Investigation
    of the Coupled Friction Behavior in the Clinching Process Chain,” in <i>Lecture
    Notes in Mechanical Engineering</i>, Cham: Springer Nature Switzerland, 2023.'
  mla: Bielak, Christian Roman, et al. “Numerical Investigation of the Coupled Friction
    Behavior in the Clinching Process Chain.” <i>Lecture Notes in Mechanical Engineering</i>,
    Springer Nature Switzerland, 2023, doi:<a href="https://doi.org/10.1007/978-3-031-41341-4_15">10.1007/978-3-031-41341-4_15</a>.
  short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Lecture Notes in Mechanical
    Engineering, Springer Nature Switzerland, Cham, 2023.'
date_created: 2024-03-18T11:56:52Z
date_updated: 2025-01-28T08:55:05Z
department:
- _id: '157'
doi: 10.1007/978-3-031-41341-4_15
language:
- iso: eng
place: Cham
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '131'
  name: 'TRR 285 - A: TRR 285 - Project Area A'
publication: Lecture Notes in Mechanical Engineering
publication_identifier:
  isbn:
  - '9783031413407'
  - '9783031413414'
  issn:
  - 2195-4356
  - 2195-4364
publication_status: published
publisher: Springer Nature Switzerland
quality_controlled: '1'
status: public
title: Numerical Investigation of the Coupled Friction Behavior in the Clinching Process
  Chain
type: book_chapter
user_id: '45779'
year: '2023'
...
---
_id: '54795'
author:
- first_name: Jens
  full_name: Hälterlein, Jens
  id: '94837'
  last_name: Hälterlein
citation:
  ama: Hälterlein J. Conflicting Values in Epidemiological Modelling, Simulation and
    Dashboard-Design. A Contribution to the Analysis of the Epistemisation of Pandemic
    Politics. <i>Digital Culture &#38; Society</i>. 2023;9(2):161-179.
  apa: Hälterlein, J. (2023). Conflicting Values in Epidemiological Modelling, Simulation
    and Dashboard-Design. A Contribution to the Analysis of the Epistemisation of
    Pandemic Politics. <i>Digital Culture &#38; Society</i>, <i>9</i>(2), 161–179.
  bibtex: '@article{Hälterlein_2023, title={Conflicting Values in Epidemiological
    Modelling, Simulation and Dashboard-Design. A Contribution to the Analysis of
    the Epistemisation of Pandemic Politics}, volume={9}, number={2}, journal={Digital
    Culture &#38; Society}, author={Hälterlein, Jens}, year={2023}, pages={161–179}
    }'
  chicago: 'Hälterlein, Jens. “Conflicting Values in Epidemiological Modelling, Simulation
    and Dashboard-Design. A Contribution to the Analysis of the Epistemisation of
    Pandemic Politics.” <i>Digital Culture &#38; Society</i> 9, no. 2 (2023): 161–79.'
  ieee: J. Hälterlein, “Conflicting Values in Epidemiological Modelling, Simulation
    and Dashboard-Design. A Contribution to the Analysis of the Epistemisation of
    Pandemic Politics,” <i>Digital Culture &#38; Society</i>, vol. 9, no. 2, pp. 161–179,
    2023.
  mla: Hälterlein, Jens. “Conflicting Values in Epidemiological Modelling, Simulation
    and Dashboard-Design. A Contribution to the Analysis of the Epistemisation of
    Pandemic Politics.” <i>Digital Culture &#38; Society</i>, vol. 9, no. 2, 2023,
    pp. 161–79.
  short: J. Hälterlein, Digital Culture &#38; Society 9 (2023) 161–179.
date_created: 2024-06-17T18:44:43Z
date_updated: 2025-01-29T14:46:17Z
department:
- _id: '36'
- _id: '11'
intvolume: '         9'
issue: '2'
language:
- iso: eng
page: 161-179
publication: Digital Culture & Society
publication_status: published
quality_controlled: '1'
status: public
title: Conflicting Values in Epidemiological Modelling, Simulation and Dashboard-Design.
  A Contribution to the Analysis of the Epistemisation of Pandemic Politics
type: journal_article
user_id: '94837'
volume: 9
year: '2023'
...
---
_id: '58404'
abstract:
- lang: eng
  text: Der Artikel untersucht die kulturtheoretische Grundlage eines literaturwissenschaftlichen
    Zugangs zu Weltliteratur. Dabei setzt er sich mit Theorien des Inter- und Transkulturellem
    auseinander und macht mit dem methodischen Zugriff des "Doppeltblickens" einen
    Vorschlag, wie eine interkulturelle Methode vor dem Hintergrund eines komplexen
    Kulturbegriffs ohne Essentialisierungen gelingen kann.
author:
- first_name: Swen
  full_name: Schulte Eickholt, Swen
  id: '7117'
  last_name: Schulte Eickholt
citation:
  ama: 'Schulte Eickholt S. National, global oder irgendwo dazwischen? Methodische
    Zugänge zur (neuen) Weltliteratur aus germanistischer Perspektive. In: Schulte
    Eickholt S, Hofmann M, eds. <i>Der Neue Weltengarten 2022. Jahrbuch für Literatur
    und Interkulturalität</i>. Wehrhahn; 2023:43-76.'
  apa: Schulte Eickholt, S. (2023). National, global oder irgendwo dazwischen? Methodische
    Zugänge zur (neuen) Weltliteratur aus germanistischer Perspektive. In S. Schulte
    Eickholt &#38; M. Hofmann (Eds.), <i>Der Neue Weltengarten 2022. Jahrbuch für
    Literatur und Interkulturalität</i> (pp. 43–76). Wehrhahn.
  bibtex: '@inbook{Schulte Eickholt_2023, place={Hannover}, title={National, global
    oder irgendwo dazwischen? Methodische Zugänge zur (neuen) Weltliteratur aus germanistischer
    Perspektive}, booktitle={Der Neue Weltengarten 2022. Jahrbuch für Literatur und
    Interkulturalität}, publisher={Wehrhahn}, author={Schulte Eickholt, Swen}, editor={Schulte
    Eickholt, Swen and Hofmann, Michael }, year={2023}, pages={43–76} }'
  chicago: 'Schulte Eickholt, Swen. “National, global oder irgendwo dazwischen? Methodische
    Zugänge zur (neuen) Weltliteratur aus germanistischer Perspektive.” In <i>Der
    Neue Weltengarten 2022. Jahrbuch für Literatur und Interkulturalität</i>, edited
    by Swen Schulte Eickholt and Michael  Hofmann, 43–76. Hannover: Wehrhahn, 2023.'
  ieee: 'S. Schulte Eickholt, “National, global oder irgendwo dazwischen? Methodische
    Zugänge zur (neuen) Weltliteratur aus germanistischer Perspektive,” in <i>Der
    Neue Weltengarten 2022. Jahrbuch für Literatur und Interkulturalität</i>, S. Schulte
    Eickholt and M. Hofmann, Eds. Hannover: Wehrhahn, 2023, pp. 43–76.'
  mla: Schulte Eickholt, Swen. “National, global oder irgendwo dazwischen? Methodische
    Zugänge zur (neuen) Weltliteratur aus germanistischer Perspektive.” <i>Der Neue
    Weltengarten 2022. Jahrbuch für Literatur und Interkulturalität</i>, edited by
    Swen Schulte Eickholt and Michael  Hofmann, Wehrhahn, 2023, pp. 43–76.
  short: 'S. Schulte Eickholt, in: S. Schulte Eickholt, M. Hofmann (Eds.), Der Neue
    Weltengarten 2022. Jahrbuch für Literatur und Interkulturalität, Wehrhahn, Hannover,
    2023, pp. 43–76.'
date_created: 2025-01-30T09:52:55Z
date_updated: 2025-01-30T09:53:23Z
department:
- _id: '465'
- _id: '737'
- _id: '866'
- _id: '5'
editor:
- first_name: Swen
  full_name: Schulte Eickholt, Swen
  last_name: Schulte Eickholt
- first_name: 'Michael '
  full_name: 'Hofmann, Michael '
  last_name: Hofmann
language:
- iso: ger
page: 43-76
place: Hannover
publication: Der Neue Weltengarten 2022. Jahrbuch für Literatur und Interkulturalität
publication_identifier:
  isbn:
  - 978-3-86525-983-7
publication_status: published
publisher: Wehrhahn
quality_controlled: '1'
status: public
title: National, global oder irgendwo dazwischen? Methodische Zugänge zur (neuen)
  Weltliteratur aus germanistischer Perspektive
type: book_chapter
user_id: '7117'
year: '2023'
...
---
_id: '46494'
abstract:
- lang: eng
  text: To improve the mechanical performance and to address current shortcomings
    of adhesive bonds such as bond degradation due to aging, a pulsed laser surface
    pretreatment of the metal surfaces of aluminum AW 6082-T6 joints with epoxy adhesive
    E320 is investigated. The surface treatment of the specimens resulted in increased
    single-lap shear (SLS) strengths before and after hydrothermal aging in 80°C hot
    water compared to nonpretreated reference specimens. In order to reveal the correlations
    of laser parameters, resulting surface morphologies and the SLS strength, differently
    laser pretreated surfaces were characterized at the micro- and nanoscale using
    optical and scanning electron microscopies. The surface enlargement was quantified
    with a digital image analysis of cross-sections prepared from the joint interfaces.
    An analysis of variances (ANOVA) of the SLS results indicated that the laser parameters
    power and pulse frequency were most critical for obtaining high SLS strengths.
    Pretreated joint surfaces with a high micro- and nano-surface enlargement and
    deep solidification structures provide high SLS strengths of up to 50 MPa and
    almost negligible aging losses of merely 4%. Undercut structures on the pretreated
    surfaces were found to be beneficial for the mechanical and aging properties when
    only limited micro- and nanostructuring was applied.
article_type: original
author:
- first_name: Jonathan
  full_name: Freund, Jonathan
  last_name: Freund
- first_name: Miriam
  full_name: Löbbecke, Miriam
  last_name: Löbbecke
- first_name: Alexander
  full_name: Delp, Alexander
  last_name: Delp
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
- first_name: Shuang
  full_name: Wu, Shuang
  id: '48039'
  last_name: Wu
  orcid: 0000-0001-8645-9952
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
- first_name: Jan
  full_name: Haubrich, Jan
  last_name: Haubrich
citation:
  ama: Freund J, Löbbecke M, Delp A, et al. Relationship between laser-generated micro-
    and nanostructures and the long-term stability of bonded epoxy-aluminum joints.
    <i>The Journal of Adhesion</i>. Published online 2023:1-31. doi:<a href="https://doi.org/10.1080/00218464.2023.2223475">10.1080/00218464.2023.2223475</a>
  apa: Freund, J., Löbbecke, M., Delp, A., Walther, F., Wu, S., Tröster, T., &#38;
    Haubrich, J. (2023). Relationship between laser-generated micro- and nanostructures
    and the long-term stability of bonded epoxy-aluminum joints. <i>The Journal of
    Adhesion</i>, 1–31. <a href="https://doi.org/10.1080/00218464.2023.2223475">https://doi.org/10.1080/00218464.2023.2223475</a>
  bibtex: '@article{Freund_Löbbecke_Delp_Walther_Wu_Tröster_Haubrich_2023, title={Relationship
    between laser-generated micro- and nanostructures and the long-term stability
    of bonded epoxy-aluminum joints}, DOI={<a href="https://doi.org/10.1080/00218464.2023.2223475">10.1080/00218464.2023.2223475</a>},
    journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Freund,
    Jonathan and Löbbecke, Miriam and Delp, Alexander and Walther, Frank and Wu, Shuang
    and Tröster, Thomas and Haubrich, Jan}, year={2023}, pages={1–31} }'
  chicago: Freund, Jonathan, Miriam Löbbecke, Alexander Delp, Frank Walther, Shuang
    Wu, Thomas Tröster, and Jan Haubrich. “Relationship between Laser-Generated Micro-
    and Nanostructures and the Long-Term Stability of Bonded Epoxy-Aluminum Joints.”
    <i>The Journal of Adhesion</i>, 2023, 1–31. <a href="https://doi.org/10.1080/00218464.2023.2223475">https://doi.org/10.1080/00218464.2023.2223475</a>.
  ieee: 'J. Freund <i>et al.</i>, “Relationship between laser-generated micro- and
    nanostructures and the long-term stability of bonded epoxy-aluminum joints,” <i>The
    Journal of Adhesion</i>, pp. 1–31, 2023, doi: <a href="https://doi.org/10.1080/00218464.2023.2223475">10.1080/00218464.2023.2223475</a>.'
  mla: Freund, Jonathan, et al. “Relationship between Laser-Generated Micro- and Nanostructures
    and the Long-Term Stability of Bonded Epoxy-Aluminum Joints.” <i>The Journal of
    Adhesion</i>, Informa UK Limited, 2023, pp. 1–31, doi:<a href="https://doi.org/10.1080/00218464.2023.2223475">10.1080/00218464.2023.2223475</a>.
  short: J. Freund, M. Löbbecke, A. Delp, F. Walther, S. Wu, T. Tröster, J. Haubrich,
    The Journal of Adhesion (2023) 1–31.
date_created: 2023-08-15T10:22:38Z
date_updated: 2025-01-30T12:35:30Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.1080/00218464.2023.2223475
keyword:
- Materials Chemistry
- Surfaces
- Coatings and Films
- Surfaces and Interfaces
- Mechanics of Materials
- General Chemistry
language:
- iso: eng
page: 1-31
publication: The Journal of Adhesion
publication_identifier:
  issn:
  - 0021-8464
  - 1545-5823
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: Relationship between laser-generated micro- and nanostructures and the long-term
  stability of bonded epoxy-aluminum joints
type: journal_article
user_id: '48039'
year: '2023'
...
---
_id: '55760'
abstract:
- lang: eng
  text: The transferability of structure–property relationships for laser-pretreated
    metal adhesive joints to laser-pretreated metal–carbon-fiber-reinforced plastic
    (CFRP) bonds was investigated. Single-lap shear tests were performed on hybrid
    AW 6082-T6–CFRP specimens pretreated with the same pulsed laser surface parameter
    sets on the metal surface as previously tested, AW 6082-T6–E320 metal adhesive
    joints. The fracture surfaces were characterized to determine the type of failure
    and elucidate differences and commonalities in the link between surface structures
    and single-lap shear strengths. Digital image analyses of the hybrid specimens’
    fractured surfaces were used to quantify remaining CFRP fragments on the metallic
    joint side. The results indicate that high surface enlargements and the presence
    of undercut structures lead to single-lap shear strengths exceeding 40 MPa and
    35 MPa for unaged and aged hybrid specimens, respectively. Whereas for the metal–polymer
    joints, the trend from high strength to weakly bonded specimens is largely continuous
    with the degree of surface structuring, hybrid metal–CFRP joints exhibit a drastic
    drop in joint performance after aging if the laser-generated surface structures
    are less pronounced with low surface enlargements and crater depths. Surface features
    and hydrothermal aging determine whether the specimens fail cohesively or adhesively.</jats:p>
article_number: '427'
article_type: original
author:
- first_name: Jonathan
  full_name: Freund, Jonathan
  last_name: Freund
- first_name: Isabel
  full_name: Lützenkirchen, Isabel
  last_name: Lützenkirchen
- first_name: Miriam
  full_name: Löbbecke, Miriam
  last_name: Löbbecke
- first_name: Alexander
  full_name: Delp, Alexander
  last_name: Delp
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
- first_name: Shuang
  full_name: Wu, Shuang
  id: '48039'
  last_name: Wu
  orcid: 0000-0001-8645-9952
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
- first_name: Jan
  full_name: Haubrich, Jan
  last_name: Haubrich
citation:
  ama: Freund J, Lützenkirchen I, Löbbecke M, et al. Transferability of the Structure–Property
    Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid
    Joints. <i>Journal of Composites Science</i>. 2023;7(10). doi:<a href="https://doi.org/10.3390/jcs7100427">10.3390/jcs7100427</a>
  apa: Freund, J., Lützenkirchen, I., Löbbecke, M., Delp, A., Walther, F., Wu, S.,
    Tröster, T., &#38; Haubrich, J. (2023). Transferability of the Structure–Property
    Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid
    Joints. <i>Journal of Composites Science</i>, <i>7</i>(10), Article 427. <a href="https://doi.org/10.3390/jcs7100427">https://doi.org/10.3390/jcs7100427</a>
  bibtex: '@article{Freund_Lützenkirchen_Löbbecke_Delp_Walther_Wu_Tröster_Haubrich_2023,
    title={Transferability of the Structure–Property Relationships from Laser-Pretreated
    Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints}, volume={7}, DOI={<a href="https://doi.org/10.3390/jcs7100427">10.3390/jcs7100427</a>},
    number={10427}, journal={Journal of Composites Science}, publisher={MDPI AG},
    author={Freund, Jonathan and Lützenkirchen, Isabel and Löbbecke, Miriam and Delp,
    Alexander and Walther, Frank and Wu, Shuang and Tröster, Thomas and Haubrich,
    Jan}, year={2023} }'
  chicago: Freund, Jonathan, Isabel Lützenkirchen, Miriam Löbbecke, Alexander Delp,
    Frank Walther, Shuang Wu, Thomas Tröster, and Jan Haubrich. “Transferability of
    the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints
    to Aluminum–CFRP Hybrid Joints.” <i>Journal of Composites Science</i> 7, no. 10
    (2023). <a href="https://doi.org/10.3390/jcs7100427">https://doi.org/10.3390/jcs7100427</a>.
  ieee: 'J. Freund <i>et al.</i>, “Transferability of the Structure–Property Relationships
    from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints,” <i>Journal
    of Composites Science</i>, vol. 7, no. 10, Art. no. 427, 2023, doi: <a href="https://doi.org/10.3390/jcs7100427">10.3390/jcs7100427</a>.'
  mla: Freund, Jonathan, et al. “Transferability of the Structure–Property Relationships
    from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints.” <i>Journal
    of Composites Science</i>, vol. 7, no. 10, 427, MDPI AG, 2023, doi:<a href="https://doi.org/10.3390/jcs7100427">10.3390/jcs7100427</a>.
  short: J. Freund, I. Lützenkirchen, M. Löbbecke, A. Delp, F. Walther, S. Wu, T.
    Tröster, J. Haubrich, Journal of Composites Science 7 (2023).
date_created: 2024-08-26T10:45:05Z
date_updated: 2025-01-30T12:31:55Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.3390/jcs7100427
intvolume: '         7'
issue: '10'
language:
- iso: eng
publication: Journal of Composites Science
publication_identifier:
  issn:
  - 2504-477X
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Transferability of the Structure–Property Relationships from Laser-Pretreated
  Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints
type: journal_article
user_id: '48039'
volume: 7
year: '2023'
...
---
_id: '46495'
abstract:
- lang: eng
  text: A parameter investigation for manufacturing a hybrid system through the prepreg
    pressing process was carried out within the scope of this work to achieve optimal
    adhesion properties. The hybrid specimen comprises an aluminium sheet of alloy
    EN AW 6082 in T6 condition and a thermoset Carbon Fibre Reinforced Plastics prepreg.
    The prepreg pressing process allows the curing reaction of epoxy resin and the
    joining process to occur simultaneously to avoid an additional bonding process
    step. The surface of the aluminium sheet was pretreated in advance using a pulsed
    Nd:YAG laser to enhance the bonding properties. In the first step, the shear edge
    tests investigated the adhesion properties achieved with different consolidation
    (temperature, time and pressure) and laser parameters. Then, 3-point bending tests
    were carried out to investigate the influence of the consolidation parameters
    on the mechanical properties of the Carbon Fibre Reinforced Plastics-laminate.
    In this way, the optimal parameter sets for manufacturing hybrid structures were
    determined.
article_type: original
author:
- first_name: Shuang
  full_name: Wu, Shuang
  id: '48039'
  last_name: Wu
  orcid: 0000-0001-8645-9952
- first_name: Alexander
  full_name: Delp, Alexander
  last_name: Delp
- first_name: Jonathan
  full_name: Freund, Jonathan
  last_name: Freund
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
- first_name: Jan
  full_name: Haubrich, Jan
  last_name: Haubrich
- first_name: Miriam
  full_name: Löbbecke, Miriam
  last_name: Löbbecke
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: Wu S, Delp A, Freund J, et al. Adhesion properties of the hybrid system made
    of laser-structured aluminium EN AW 6082 and CFRP by co-bonding-pressing process.
    <i>The Journal of Adhesion</i>. Published online 2023:1-29. doi:<a href="https://doi.org/10.1080/00218464.2023.2245758">10.1080/00218464.2023.2245758</a>
  apa: Wu, S., Delp, A., Freund, J., Walther, F., Haubrich, J., Löbbecke, M., &#38;
    Tröster, T. (2023). Adhesion properties of the hybrid system made of laser-structured
    aluminium EN AW 6082 and CFRP by co-bonding-pressing process. <i>The Journal of
    Adhesion</i>, 1–29. <a href="https://doi.org/10.1080/00218464.2023.2245758">https://doi.org/10.1080/00218464.2023.2245758</a>
  bibtex: '@article{Wu_Delp_Freund_Walther_Haubrich_Löbbecke_Tröster_2023, title={Adhesion
    properties of the hybrid system made of laser-structured aluminium EN AW 6082
    and CFRP by co-bonding-pressing process}, DOI={<a href="https://doi.org/10.1080/00218464.2023.2245758">10.1080/00218464.2023.2245758</a>},
    journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Wu,
    Shuang and Delp, Alexander and Freund, Jonathan and Walther, Frank and Haubrich,
    Jan and Löbbecke, Miriam and Tröster, Thomas}, year={2023}, pages={1–29} }'
  chicago: Wu, Shuang, Alexander Delp, Jonathan Freund, Frank Walther, Jan Haubrich,
    Miriam Löbbecke, and Thomas Tröster. “Adhesion Properties of the Hybrid System
    Made of Laser-Structured Aluminium EN AW 6082 and CFRP by Co-Bonding-Pressing
    Process.” <i>The Journal of Adhesion</i>, 2023, 1–29. <a href="https://doi.org/10.1080/00218464.2023.2245758">https://doi.org/10.1080/00218464.2023.2245758</a>.
  ieee: 'S. Wu <i>et al.</i>, “Adhesion properties of the hybrid system made of laser-structured
    aluminium EN AW 6082 and CFRP by co-bonding-pressing process,” <i>The Journal
    of Adhesion</i>, pp. 1–29, 2023, doi: <a href="https://doi.org/10.1080/00218464.2023.2245758">10.1080/00218464.2023.2245758</a>.'
  mla: Wu, Shuang, et al. “Adhesion Properties of the Hybrid System Made of Laser-Structured
    Aluminium EN AW 6082 and CFRP by Co-Bonding-Pressing Process.” <i>The Journal
    of Adhesion</i>, Informa UK Limited, 2023, pp. 1–29, doi:<a href="https://doi.org/10.1080/00218464.2023.2245758">10.1080/00218464.2023.2245758</a>.
  short: S. Wu, A. Delp, J. Freund, F. Walther, J. Haubrich, M. Löbbecke, T. Tröster,
    The Journal of Adhesion (2023) 1–29.
date_created: 2023-08-15T10:26:00Z
date_updated: 2025-01-30T12:33:42Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.1080/00218464.2023.2245758
keyword:
- Materials Chemistry
- Surfaces
- Coatings and Films
- Surfaces and Interfaces
- Mechanics of Materials
- General Chemistry
language:
- iso: eng
page: 1-29
publication: The Journal of Adhesion
publication_identifier:
  issn:
  - 0021-8464
  - 1545-5823
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: Adhesion properties of the hybrid system made of laser-structured aluminium
  EN AW 6082 and CFRP by co-bonding-pressing process
type: journal_article
user_id: '48039'
year: '2023'
...
