---
_id: '62000'
article_type: original
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Lars
full_name: Meihost, Lars
id: '24769'
last_name: Meihost
citation:
ama: Claes L, Koch K, Friesen O, Meihost L. Machine Learning-Supported Inverse Measurement
Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters.
Acta Acustica. 2025;9(65). doi:10.1051/aacus/2025044
apa: Claes, L., Koch, K., Friesen, O., & Meihost, L. (2025). Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters. Acta Acustica, 9(65). https://doi.org/10.1051/aacus/2025044
bibtex: '@article{Claes_Koch_Friesen_Meihost_2025, title={Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters}, volume={9}, DOI={10.1051/aacus/2025044},
number={65}, journal={Acta Acustica}, publisher={EDP Sciences}, author={Claes,
Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}, year={2025} }'
chicago: Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. “Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters.” Acta Acustica 9, no. 65 (2025). https://doi.org/10.1051/aacus/2025044.
ieee: 'L. Claes, K. Koch, O. Friesen, and L. Meihost, “Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters,” Acta Acustica, vol. 9, no. 65, 2025, doi: 10.1051/aacus/2025044.'
mla: Claes, Leander, et al. “Machine Learning-Supported Inverse Measurement Procedure
for Broadband, Temperature Dependent Piezoelectric Material Parameters.” Acta
Acustica, vol. 9, no. 65, EDP Sciences, 2025, doi:10.1051/aacus/2025044.
short: L. Claes, K. Koch, O. Friesen, L. Meihost, Acta Acustica 9 (2025).
date_created: 2025-10-27T08:20:53Z
date_updated: 2026-01-05T08:00:05Z
department:
- _id: '49'
doi: 10.1051/aacus/2025044
intvolume: ' 9'
issue: '65'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://acta-acustica.edpsciences.org/articles/aacus/abs/2025/01/aacus250049/aacus250049.html
oa: '1'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Acta Acustica
publication_identifier:
issn:
- 2681-4617
publication_status: published
publisher: EDP Sciences
status: public
title: Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature
Dependent Piezoelectric Material Parameters
type: journal_article
user_id: '11829'
volume: 9
year: '2025'
...
---
_id: '54837'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Johannes
full_name: Lankeit, Johannes
last_name: Lankeit
- first_name: Michael
full_name: Winkler, Michael
id: '31496'
last_name: Winkler
citation:
ama: 'Claes L, Lankeit J, Winkler M. A model for heat generation by acoustic waves
in piezoelectric materials: Global large-data solutions. Mathematical Models
and Methods in Applied Sciences. 2025;35(11):2465-2512. doi:10.1142/s0218202525500447'
apa: 'Claes, L., Lankeit, J., & Winkler, M. (2025). A model for heat generation
by acoustic waves in piezoelectric materials: Global large-data solutions. Mathematical
Models and Methods in Applied Sciences, 35(11), 2465–2512. https://doi.org/10.1142/s0218202525500447'
bibtex: '@article{Claes_Lankeit_Winkler_2025, title={A model for heat generation
by acoustic waves in piezoelectric materials: Global large-data solutions}, volume={35},
DOI={10.1142/s0218202525500447},
number={11}, journal={Mathematical Models and Methods in Applied Sciences}, publisher={World
Scientific Pub Co Pte Ltd}, author={Claes, Leander and Lankeit, Johannes and Winkler,
Michael}, year={2025}, pages={2465–2512} }'
chicago: 'Claes, Leander, Johannes Lankeit, and Michael Winkler. “A Model for Heat
Generation by Acoustic Waves in Piezoelectric Materials: Global Large-Data Solutions.”
Mathematical Models and Methods in Applied Sciences 35, no. 11 (2025):
2465–2512. https://doi.org/10.1142/s0218202525500447.'
ieee: 'L. Claes, J. Lankeit, and M. Winkler, “A model for heat generation by acoustic
waves in piezoelectric materials: Global large-data solutions,” Mathematical
Models and Methods in Applied Sciences, vol. 35, no. 11, pp. 2465–2512, 2025,
doi: 10.1142/s0218202525500447.'
mla: 'Claes, Leander, et al. “A Model for Heat Generation by Acoustic Waves in Piezoelectric
Materials: Global Large-Data Solutions.” Mathematical Models and Methods in
Applied Sciences, vol. 35, no. 11, World Scientific Pub Co Pte Ltd, 2025,
pp. 2465–512, doi:10.1142/s0218202525500447.'
short: L. Claes, J. Lankeit, M. Winkler, Mathematical Models and Methods in Applied
Sciences 35 (2025) 2465–2512.
date_created: 2024-06-20T13:43:42Z
date_updated: 2026-01-05T07:59:41Z
department:
- _id: '90'
- _id: '49'
doi: 10.1142/s0218202525500447
external_id:
arxiv:
- '2411.14900'
intvolume: ' 35'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2411.14900
oa: '1'
page: 2465-2512
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Mathematical Models and Methods in Applied Sciences
publication_identifier:
issn:
- 1793-6314
publisher: World Scientific Pub Co Pte Ltd
status: public
title: 'A model for heat generation by acoustic waves in piezoelectric materials:
Global large-data solutions'
type: journal_article
user_id: '11829'
volume: 35
year: '2025'
...
---
_id: '59689'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Lars
full_name: Meihost, Lars
id: '24769'
last_name: Meihost
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Friesen O, Meihost L, Koch K, Claes L, Henning B. Estimation of piezoelectric
material parameters under varying electric field conditions. In: ; 2025. doi:10.71568/DASDAGA2025.078'
apa: Friesen, O., Meihost, L., Koch, K., Claes, L., & Henning, B. (2025). Estimation
of piezoelectric material parameters under varying electric field conditions.
DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen. https://doi.org/10.71568/DASDAGA2025.078
bibtex: '@inproceedings{Friesen_Meihost_Koch_Claes_Henning_2025, title={Estimation
of piezoelectric material parameters under varying electric field conditions},
DOI={10.71568/DASDAGA2025.078},
author={Friesen, Olga and Meihost, Lars and Koch, Kevin and Claes, Leander and
Henning, Bernd}, year={2025} }'
chicago: Friesen, Olga, Lars Meihost, Kevin Koch, Leander Claes, and Bernd Henning.
“Estimation of Piezoelectric Material Parameters under Varying Electric Field
Conditions,” 2025. https://doi.org/10.71568/DASDAGA2025.078.
ieee: 'O. Friesen, L. Meihost, K. Koch, L. Claes, and B. Henning, “Estimation of
piezoelectric material parameters under varying electric field conditions,” presented
at the DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, 2025, doi:
10.71568/DASDAGA2025.078.'
mla: Friesen, Olga, et al. Estimation of Piezoelectric Material Parameters under
Varying Electric Field Conditions. 2025, doi:10.71568/DASDAGA2025.078.
short: 'O. Friesen, L. Meihost, K. Koch, L. Claes, B. Henning, in: 2025.'
conference:
end_date: 2025-03-20
location: Copenhagen
name: DAS | DAGA 2025 - 51st Annual Meeting on Acoustics
start_date: 2025-03-17
date_created: 2025-04-25T08:51:32Z
date_updated: 2026-01-05T08:02:20Z
department:
- _id: '49'
doi: 10.71568/DASDAGA2025.078
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Estimation of piezoelectric material parameters under varying electric field
conditions
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '59056'
author:
- first_name: Karl
full_name: Seeger, Karl
last_name: Seeger
- first_name: Matteo
full_name: Genovese, Matteo
last_name: Genovese
- first_name: Alexander
full_name: Schlüter, Alexander
id: '103302'
last_name: Schlüter
orcid: 0000-0002-2569-1624
- first_name: Christina
full_name: Kockel, Christina
last_name: Kockel
- first_name: Orlando
full_name: Corigliano, Orlando
last_name: Corigliano
- first_name: Edith Benjamina
full_name: Díaz Canales, Edith Benjamina
id: '105704'
last_name: Díaz Canales
orcid: 0009-0007-2748-0074
- first_name: Aaron
full_name: Praktiknjo, Aaron
last_name: Praktiknjo
- first_name: Petronilla
full_name: Fragiacomo, Petronilla
last_name: Fragiacomo
citation:
ama: 'Seeger K, Genovese M, Schlüter A, et al. Techno-economic analysis of hydrogen
and green fuels supply scenarios assessing three import routes: Canada, Chile,
and Algeria to Germany. International Journal of Hydrogen Energy. 2025;116:558-576.
doi:10.1016/j.ijhydene.2025.02.379'
apa: 'Seeger, K., Genovese, M., Schlüter, A., Kockel, C., Corigliano, O., Díaz Canales,
E. B., Praktiknjo, A., & Fragiacomo, P. (2025). Techno-economic analysis of
hydrogen and green fuels supply scenarios assessing three import routes: Canada,
Chile, and Algeria to Germany. International Journal of Hydrogen Energy,
116, 558–576. https://doi.org/10.1016/j.ijhydene.2025.02.379'
bibtex: '@article{Seeger_Genovese_Schlüter_Kockel_Corigliano_Díaz Canales_Praktiknjo_Fragiacomo_2025,
title={Techno-economic analysis of hydrogen and green fuels supply scenarios assessing
three import routes: Canada, Chile, and Algeria to Germany}, volume={116}, DOI={10.1016/j.ijhydene.2025.02.379},
journal={International Journal of Hydrogen Energy}, publisher={Elsevier BV}, author={Seeger,
Karl and Genovese, Matteo and Schlüter, Alexander and Kockel, Christina and Corigliano,
Orlando and Díaz Canales, Edith Benjamina and Praktiknjo, Aaron and Fragiacomo,
Petronilla}, year={2025}, pages={558–576} }'
chicago: 'Seeger, Karl, Matteo Genovese, Alexander Schlüter, Christina Kockel, Orlando
Corigliano, Edith Benjamina Díaz Canales, Aaron Praktiknjo, and Petronilla Fragiacomo.
“Techno-Economic Analysis of Hydrogen and Green Fuels Supply Scenarios Assessing
Three Import Routes: Canada, Chile, and Algeria to Germany.” International
Journal of Hydrogen Energy 116 (2025): 558–76. https://doi.org/10.1016/j.ijhydene.2025.02.379.'
ieee: 'K. Seeger et al., “Techno-economic analysis of hydrogen and green
fuels supply scenarios assessing three import routes: Canada, Chile, and Algeria
to Germany,” International Journal of Hydrogen Energy, vol. 116, pp. 558–576,
2025, doi: 10.1016/j.ijhydene.2025.02.379.'
mla: 'Seeger, Karl, et al. “Techno-Economic Analysis of Hydrogen and Green Fuels
Supply Scenarios Assessing Three Import Routes: Canada, Chile, and Algeria to
Germany.” International Journal of Hydrogen Energy, vol. 116, Elsevier
BV, 2025, pp. 558–76, doi:10.1016/j.ijhydene.2025.02.379.'
short: K. Seeger, M. Genovese, A. Schlüter, C. Kockel, O. Corigliano, E.B. Díaz
Canales, A. Praktiknjo, P. Fragiacomo, International Journal of Hydrogen Energy
116 (2025) 558–576.
date_created: 2025-03-18T08:57:46Z
date_updated: 2026-01-06T08:01:01Z
department:
- _id: '876'
- _id: '9'
- _id: '393'
- _id: '321'
doi: 10.1016/j.ijhydene.2025.02.379
intvolume: ' 116'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.ijhydene.2025.02.379
oa: '1'
page: 558-576
publication: International Journal of Hydrogen Energy
publication_identifier:
issn:
- 0360-3199
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'Techno-economic analysis of hydrogen and green fuels supply scenarios assessing
three import routes: Canada, Chile, and Algeria to Germany'
type: journal_article
user_id: '103302'
volume: 116
year: '2025'
...
---
_id: '60837'
abstract:
- lang: eng
text: "In light of growing demands for resource efficiency and sustainability in
vehicle engineering, the environmentally compatible separation of structural adhesive
joints is gaining increasing relevance. This study presents a comparative analysis
of two physically based debonding methods: the established hot-air process and
a cryogenic cold process based on liquid nitrogen (LN2). The primary objective
is to assess the ecological impact and process-related sustainability of both
approaches.\r\nExperimental investigations were conducted on a component-representative
triple-sheet structure that simulates common automotive flange joints. Thermal
input was applied either by convective heating using a hot air gun or by direct
cooling through a contact-based LN2 tool. The resulting temperature profiles were
recorded using spatially distributed thermocouples. Subsequently, the outer panel
was selectively debonded to replicate a repair scenario, and the mechanical integrity
of the remaining adhesive joint was evaluated through Mode I testing of L-shaped
specimens. Process data served as input for an Life Cycle Assessment (LCA) according
to DIN EN ISO 14040.\r\nThe cryogenic method achieved a 40% reduction in carbon
footprint compared to the hot-air process (0.337 kg vs. 0.559 kg CO2-equivalents),
primarily due to its shorter process time and more efficient heat transfer. While
the hot-air method’s impact is mainly driven by electrical energy use, that of
the cold method stems from cryogenic media consumption. Notwithstanding certain
disadvantages in specific impact categories, the LN2-based process exhibits a
superior overall ecological performance and signifies a promising solution for
repair- and recycling-oriented adhesive separation in structural vehicle applications."
article_number: '100332'
article_type: original
author:
- first_name: Alex
full_name: Jordan, Alex
id: '62451'
last_name: Jordan
orcid: 0009-0007-9546-6071
- first_name: Lucas
full_name: Hermelingmeier, Lucas
id: '58649'
last_name: Hermelingmeier
- first_name: Julian
full_name: Gilich, Julian
id: '44391'
last_name: Gilich
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Marco Sebastian
full_name: De Santis, Marco Sebastian
id: '52239'
last_name: De Santis
- first_name: Alexander
full_name: Schlüter, Alexander
id: '103302'
last_name: Schlüter
orcid: 0000-0002-2569-1624
citation:
ama: Jordan A, Hermelingmeier L, Gilich J, Meschut G, De Santis MS, Schlüter A.
Comparison of the economic efficiency and sustainability of two debonding processes
for structurally bonded sills. Journal of Advanced Joining Processes. 2025;12.
doi:10.1016/j.jajp.2025.100332
apa: Jordan, A., Hermelingmeier, L., Gilich, J., Meschut, G., De Santis, M. S.,
& Schlüter, A. (2025). Comparison of the economic efficiency and sustainability
of two debonding processes for structurally bonded sills. Journal of Advanced
Joining Processes, 12, Article 100332. https://doi.org/10.1016/j.jajp.2025.100332
bibtex: '@article{Jordan_Hermelingmeier_Gilich_Meschut_De Santis_Schlüter_2025,
title={Comparison of the economic efficiency and sustainability of two debonding
processes for structurally bonded sills}, volume={12}, DOI={10.1016/j.jajp.2025.100332},
number={100332}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier},
author={Jordan, Alex and Hermelingmeier, Lucas and Gilich, Julian and Meschut,
Gerson and De Santis, Marco Sebastian and Schlüter, Alexander}, year={2025} }'
chicago: Jordan, Alex, Lucas Hermelingmeier, Julian Gilich, Gerson Meschut, Marco
Sebastian De Santis, and Alexander Schlüter. “Comparison of the Economic Efficiency
and Sustainability of Two Debonding Processes for Structurally Bonded Sills.”
Journal of Advanced Joining Processes 12 (2025). https://doi.org/10.1016/j.jajp.2025.100332.
ieee: 'A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M. S. De Santis, and
A. Schlüter, “Comparison of the economic efficiency and sustainability of two
debonding processes for structurally bonded sills,” Journal of Advanced Joining
Processes, vol. 12, Art. no. 100332, 2025, doi: 10.1016/j.jajp.2025.100332.'
mla: Jordan, Alex, et al. “Comparison of the Economic Efficiency and Sustainability
of Two Debonding Processes for Structurally Bonded Sills.” Journal of Advanced
Joining Processes, vol. 12, 100332, Elsevier, 2025, doi:10.1016/j.jajp.2025.100332.
short: A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M.S. De Santis, A. Schlüter,
Journal of Advanced Joining Processes 12 (2025).
date_created: 2025-07-30T11:04:28Z
date_updated: 2026-01-06T08:22:54Z
department:
- _id: '157'
- _id: '876'
- _id: '321'
- _id: '9'
doi: 10.1016/j.jajp.2025.100332
intvolume: ' 12'
keyword:
- Sustainable debonding
- Structural adhesives
- Sustainable joining technologies
- Life Cycle Assessment (LCA)
- Automotive repair process
- Economically efficient debonding
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S2666330925000536?via%3Dihub
oa: '1'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Comparison of the economic efficiency and sustainability of two debonding processes
for structurally bonded sills
type: journal_article
user_id: '103302'
volume: 12
year: '2025'
...
---
_id: '63209'
abstract:
- lang: ger
text: 'Die DFG-Projekte AddFeRo-PM (406108415) und AddFeRo-SR (465089065) untersuchten
die Potenziale des LB-PBF/M-Verfahrens zur Herstellung von Rotoren für unterschiedliche
elektrische Maschinen. Im interdisziplinären Ansatz wurden Materialentwicklung
und mechanische sowie elektromagnetische Optimierung verbunden. Im Projekt „AddFeRo-PM“
wurde der Rotor einer permanentmagneterregten Synchron- maschine (PMSM) untersucht.
FeSi erwies sich als geeignete Legierung, konnte aber wegen Spannungsrissen nur
bis zu 3 % Siliziumanteil (kurz: FeSi3) verarbeitet werden. Mechanische und elektromagnetische
Untersuchungen ermöglichten eine 3D-Optimierung der Rotorgeometrie und -struktur.
Der Demonstrator wurde additiv gefertigt und zeigt Leicht-baupotenziale sowie
reduzierte Drehmomentwelligkeit. Im Folgeprojekt „AddFeRo-SR“ kam eine Hochtemperatur-Bauraumheizung
(HTBH) zum Einsatz, die FeSi mit 6,5 % Siliziumanteil verarbeitbar machte, welches
bessere elektro- magnetische Eigenschaften bietet. Sie wurde bei einer Synchron-Reluktanzmaschine
(SynRM) getestet. Eine hybride Rotorfertigung erwies sich jedoch aufgrund von
HTBH-Einschränkungen als ungeeignet, weshalb eine einteilige Fertigung mit FeSi3
umgesetzt wurde. Experimente bestätigten vergleichbare Betriebsergebnisse zur
konventionellen Fertigung bei reduzierter Rotormasse. Zusätzlich wurde eine Methodik
entwickelt, um additive Verfahren als Ergänzung zur konventionellen Fertigung
zu integrieren. Beide Projekte zeigen das Potenzial additiver Fertigung für Leichtbau
und Wirkungsgradsteigerung im Elektromaschinenbau und bieten wertvolle Grundlagen
für industrielle Anwendungen.'
author:
- first_name: Michael
full_name: Haase, Michael
id: '35970'
last_name: Haase
- first_name: Marius
full_name: Behrendt, Marius
last_name: Behrendt
- first_name: Florian
full_name: Hengsbach, Florian
id: '14073'
last_name: Hengsbach
- first_name: Vinay
full_name: Kunnathully Sathees Kumar, Vinay
id: '60979'
last_name: Kunnathully Sathees Kumar
- first_name: Sebastian
full_name: Magerkohl, Sebastian
id: '28520'
last_name: Magerkohl
- first_name: Balázs
full_name: Magyar, Balázs
id: '97759'
last_name: Magyar
- first_name: Bernd
full_name: Ponick, Bernd
last_name: Ponick
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
- first_name: Detmar
full_name: Zimmer, Detmar
id: '604'
last_name: Zimmer
citation:
ama: 'Haase M, Behrendt M, Hengsbach F, et al. Additive Fertigung im Elektromaschinenbau:
Erforschung von Potentialen der additiven Fertigung in Rotoren permanentmagneterregter
Synchronmaschinen. Technische Informationsbibliothek; 2025. doi:10.34657/26753'
apa: 'Haase, M., Behrendt, M., Hengsbach, F., Kunnathully Sathees Kumar, V., Magerkohl,
S., Magyar, B., Ponick, B., Schaper, M., & Zimmer, D. (2025). Additive
Fertigung im Elektromaschinenbau: Erforschung von Potentialen der additiven Fertigung
in Rotoren permanentmagneterregter Synchronmaschinen. Technische Informationsbibliothek.
https://doi.org/10.34657/26753'
bibtex: '@book{Haase_Behrendt_Hengsbach_Kunnathully Sathees Kumar_Magerkohl_Magyar_Ponick_Schaper_Zimmer_2025,
place={Hannover}, title={Additive Fertigung im Elektromaschinenbau: Erforschung
von Potentialen der additiven Fertigung in Rotoren permanentmagneterregter Synchronmaschinen},
DOI={10.34657/26753}, publisher={Technische
Informationsbibliothek}, author={Haase, Michael and Behrendt, Marius and Hengsbach,
Florian and Kunnathully Sathees Kumar, Vinay and Magerkohl, Sebastian and Magyar,
Balázs and Ponick, Bernd and Schaper, Mirko and Zimmer, Detmar}, year={2025} }'
chicago: 'Haase, Michael, Marius Behrendt, Florian Hengsbach, Vinay Kunnathully
Sathees Kumar, Sebastian Magerkohl, Balázs Magyar, Bernd Ponick, Mirko Schaper,
and Detmar Zimmer. Additive Fertigung im Elektromaschinenbau: Erforschung von
Potentialen der additiven Fertigung in Rotoren permanentmagneterregter Synchronmaschinen.
Hannover: Technische Informationsbibliothek, 2025. https://doi.org/10.34657/26753.'
ieee: 'M. Haase et al., Additive Fertigung im Elektromaschinenbau: Erforschung
von Potentialen der additiven Fertigung in Rotoren permanentmagneterregter Synchronmaschinen.
Hannover: Technische Informationsbibliothek, 2025.'
mla: 'Haase, Michael, et al. Additive Fertigung im Elektromaschinenbau: Erforschung
von Potentialen der additiven Fertigung in Rotoren permanentmagneterregter Synchronmaschinen.
Technische Informationsbibliothek, 2025, doi:10.34657/26753.'
short: 'M. Haase, M. Behrendt, F. Hengsbach, V. Kunnathully Sathees Kumar, S. Magerkohl,
B. Magyar, B. Ponick, M. Schaper, D. Zimmer, Additive Fertigung im Elektromaschinenbau:
Erforschung von Potentialen der additiven Fertigung in Rotoren permanentmagneterregter
Synchronmaschinen, Technische Informationsbibliothek, Hannover, 2025.'
date_created: 2025-12-18T12:14:12Z
date_updated: 2026-01-06T08:09:33Z
department:
- _id: '146'
- _id: '158'
doi: 10.34657/26753
has_accepted_license: '1'
keyword:
- Additive Fertigung
- Elektromotor
- Leichtbau
- Synchronmotor
- DFG
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://oa.tib.eu/renate/bitstreams/9121e5bb-d113-4cfe-8fc6-610465afcd66/download
oa: '1'
place: Hannover
publication_status: published
publisher: Technische Informationsbibliothek
status: public
title: 'Additive Fertigung im Elektromaschinenbau: Erforschung von Potentialen der
additiven Fertigung in Rotoren permanentmagneterregter Synchronmaschinen'
type: report
user_id: '97759'
year: '2025'
...
---
_id: '61753'
abstract:
- lang: eng
text: This paper presents LOLA, a massively multilingual large language model trained
on more than 160 languages using a sparse Mixture-of-Experts Transformer architecture.
Our architectural and implementation choices address the challenge of harnessing
linguistic diversity while maintaining efficiency and avoiding the common pitfalls
of multilinguality. Our analysis of the evaluation results shows competitive performance
in natural language generation and understanding tasks. Additionally, we demonstrate
how the learned expert-routing mechanism exploits implicit phylogenetic linguistic
patterns to potentially alleviate the curse of multilinguality. We provide an
in-depth look at the training process, an analysis of the datasets, and a balanced
exploration of the model{’}s strengths and limitations. As an open-source model,
LOLA promotes reproducibility and serves as a robust foundation for future research.
Our findings enable the development of compute-efficient multilingual models with
strong, scalable performance across languages.
author:
- first_name: Nikit
full_name: Srivastava, Nikit
id: '70066'
last_name: Srivastava
orcid: 0009-0004-5164-4911
- first_name: Denis
full_name: Kuchelev, Denis
id: '70842'
last_name: Kuchelev
- first_name: Tatiana
full_name: Moteu Ngoli, Tatiana
id: '99174'
last_name: Moteu Ngoli
- first_name: Kshitij
full_name: Shetty, Kshitij
last_name: Shetty
- first_name: Michael
full_name: Röder, Michael
id: '67199'
last_name: Röder
orcid: https://orcid.org/0000-0002-8609-8277
- first_name: Hamada Mohamed Abdelsamee
full_name: Zahera, Hamada Mohamed Abdelsamee
id: '72768'
last_name: Zahera
orcid: 0000-0003-0215-1278
- first_name: Diego
full_name: Moussallem, Diego
id: '71635'
last_name: Moussallem
- first_name: Axel-Cyrille
full_name: Ngonga Ngomo, Axel-Cyrille
id: '65716'
last_name: Ngonga Ngomo
citation:
ama: 'Srivastava N, Kuchelev D, Moteu Ngoli T, et al. LOLA – An Open-Source Massively
Multilingual Large Language Model. In: Rambow O, Wanner L, Apidianaki M, Al-Khalifa
H, Eugenio BD, Schockaert S, eds. Proceedings of the 31st International Conference
on Computational Linguistics. Association for Computational Linguistics; 2025:6420–6446.'
apa: Srivastava, N., Kuchelev, D., Moteu Ngoli, T., Shetty, K., Röder, M., Zahera,
H. M. A., Moussallem, D., & Ngonga Ngomo, A.-C. (2025). LOLA – An Open-Source
Massively Multilingual Large Language Model. In O. Rambow, L. Wanner, M. Apidianaki,
H. Al-Khalifa, B. D. Eugenio, & S. Schockaert (Eds.), Proceedings of the
31st International Conference on Computational Linguistics (pp. 6420–6446).
Association for Computational Linguistics.
bibtex: '@inproceedings{Srivastava_Kuchelev_Moteu Ngoli_Shetty_Röder_Zahera_Moussallem_Ngonga
Ngomo_2025, place={Abu Dhabi, UAE}, title={LOLA – An Open-Source Massively Multilingual
Large Language Model}, booktitle={Proceedings of the 31st International Conference
on Computational Linguistics}, publisher={Association for Computational Linguistics},
author={Srivastava, Nikit and Kuchelev, Denis and Moteu Ngoli, Tatiana and Shetty,
Kshitij and Röder, Michael and Zahera, Hamada Mohamed Abdelsamee and Moussallem,
Diego and Ngonga Ngomo, Axel-Cyrille}, editor={Rambow, Owen and Wanner, Leo and
Apidianaki, Marianna and Al-Khalifa, Hend and Eugenio, Barbara Di and Schockaert,
Steven}, year={2025}, pages={6420–6446} }'
chicago: 'Srivastava, Nikit, Denis Kuchelev, Tatiana Moteu Ngoli, Kshitij Shetty,
Michael Röder, Hamada Mohamed Abdelsamee Zahera, Diego Moussallem, and Axel-Cyrille
Ngonga Ngomo. “LOLA – An Open-Source Massively Multilingual Large Language Model.”
In Proceedings of the 31st International Conference on Computational Linguistics,
edited by Owen Rambow, Leo Wanner, Marianna Apidianaki, Hend Al-Khalifa, Barbara
Di Eugenio, and Steven Schockaert, 6420–6446. Abu Dhabi, UAE: Association for
Computational Linguistics, 2025.'
ieee: N. Srivastava et al., “LOLA – An Open-Source Massively Multilingual
Large Language Model,” in Proceedings of the 31st International Conference
on Computational Linguistics, 2025, pp. 6420–6446.
mla: Srivastava, Nikit, et al. “LOLA – An Open-Source Massively Multilingual Large
Language Model.” Proceedings of the 31st International Conference on Computational
Linguistics, edited by Owen Rambow et al., Association for Computational Linguistics,
2025, pp. 6420–6446.
short: 'N. Srivastava, D. Kuchelev, T. Moteu Ngoli, K. Shetty, M. Röder, H.M.A.
Zahera, D. Moussallem, A.-C. Ngonga Ngomo, in: O. Rambow, L. Wanner, M. Apidianaki,
H. Al-Khalifa, B.D. Eugenio, S. Schockaert (Eds.), Proceedings of the 31st International
Conference on Computational Linguistics, Association for Computational Linguistics,
Abu Dhabi, UAE, 2025, pp. 6420–6446.'
date_created: 2025-10-08T11:02:30Z
date_updated: 2026-01-06T10:11:37Z
editor:
- first_name: Owen
full_name: Rambow, Owen
last_name: Rambow
- first_name: Leo
full_name: Wanner, Leo
last_name: Wanner
- first_name: Marianna
full_name: Apidianaki, Marianna
last_name: Apidianaki
- first_name: Hend
full_name: Al-Khalifa, Hend
last_name: Al-Khalifa
- first_name: Barbara Di
full_name: Eugenio, Barbara Di
last_name: Eugenio
- first_name: Steven
full_name: Schockaert, Steven
last_name: Schockaert
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://aclanthology.org/2025.coling-main.428.pdf
oa: '1'
page: 6420–6446
place: Abu Dhabi, UAE
publication: Proceedings of the 31st International Conference on Computational Linguistics
publisher: Association for Computational Linguistics
status: public
title: LOLA – An Open-Source Massively Multilingual Large Language Model
type: conference
user_id: '70066'
year: '2025'
...
---
_id: '63091'
abstract:
- lang: eng
text: We present the design and characterization of a guided-wave, bright, and highly
frequency non-degenerate parametric down-conversion (PDC) source in thin-film
lithium niobate. The source generates photon pairs with wavelengths of 815 nm
and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths.
We confirm the high quality of the generated single photons by determining a value
for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3).
Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which
is two orders of magnitude higher than sources based on weakly guiding waveguides.
The shape of the PDC spectrum and the strong agreement between the effective and
nominal bandwidth highlight our high fabrication quality of periodically poled
waveguides. The good agreement between the measured and simulated spectral characteristics
of our source demonstrates our excellent understanding of the PDC process. Our
result is a valuable step towards practical and scalable quantum communication
networks as well as photonic quantum computing.
article_number: '52729'
article_type: original
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Werner
full_name: Ridder, Werner
id: '63574'
last_name: Ridder
- first_name: Christian
full_name: Golla, Christian
id: '40420'
last_name: Golla
- first_name: Ronja
full_name: Köthemann, Ronja
last_name: Köthemann
- first_name: Bernhard
full_name: Reineke, Bernhard
id: '29821'
last_name: Reineke
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source
based on thin-film lithium niobate for bridging visible and telecom wavelengths.
Optics Express. 2025;33(25). doi:10.1364/oe.571605
apa: Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R.,
Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium
niobate for bridging visible and telecom wavelengths. Optics Express, 33(25),
Article 52729. https://doi.org/10.1364/oe.571605
bibtex: '@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et
al._2025, title={Ultrabright, two-color photon pair source based on thin-film
lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={10.1364/oe.571605}, number={2552729},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel,
Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian
and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin
and Eigner, Christof and et al.}, year={2025} }'
chicago: Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla,
Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair
Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.”
Optics Express 33, no. 25 (2025). https://doi.org/10.1364/oe.571605.
ieee: 'S. Babel et al., “Ultrabright, two-color photon pair source based
on thin-film lithium niobate for bridging visible and telecom wavelengths,” Optics
Express, vol. 33, no. 25, Art. no. 52729, 2025, doi: 10.1364/oe.571605.'
mla: Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film
Lithium Niobate for Bridging Visible and Telecom Wavelengths.” Optics Express,
vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:10.1364/oe.571605.
short: S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke,
H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33
(2025).
date_created: 2025-12-15T07:20:36Z
date_updated: 2026-01-07T11:28:35Z
department:
- _id: '288'
- _id: '623'
doi: 10.1364/oe.571605
intvolume: ' 33'
issue: '25'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729
oa: '1'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Ultrabright, two-color photon pair source based on thin-film lithium niobate
for bridging visible and telecom wavelengths
type: journal_article
user_id: '63231'
volume: 33
year: '2025'
...
---
_id: '62713'
abstract:
- lang: eng
text: Periodically poled thin-film lithium niobate (TFLN) crystals are the fundamental
building block for highly-efficient quantum light sources and frequency converters.
The efficiency of these devices is strongly dependent on the interaction length
between the light and the nonlinear material, scaling quadratically with this
parameter. Nevertheless, the fabrication of long, continuously poled areas in
TFLN remains challenging, the length of continuously poled areas rarely exceeds
10 mm. In this work, we demonstrate a significant progress in this field achieving
the periodic poling of continuous poled areas of 70 mm length with a 3 μm poling
period and a close to 50 % duty cycle. We compare two poling electrode design
approaches to fabricate long, continuous poled areas. The first approach involves
the poling of a single, continuous 70 mm long electrode. The second utilize a
segmented approach including the poling of more than 20 individual sections forming
together a 70 mm long poling area with no stitching errors. While the continuous
electrode allows for faster fabrication, the segmented approach allows to individually
optimize the poling resulting in less duty cycle variation. A detailed analysis
of the periodic poling results reveals that the results of both are consistent
with previously reported poling outcomes for shorter devices. Thus, we demonstrate
wafer-scale periodic poling exceeding chiplet-size without any loss in the periodic
poling quality. Our work presents a key step towards highly-efficient, narrow-bandwidth
and low-pump power nonlinear optical devices.
article_type: original
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Noah
full_name: Spiegelberg, Noah
last_name: Spiegelberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Spiegelberg N, Rüsing M, Eigner C, Padberg L, Silberhorn C. Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate. Nanophotonics. 2025;14:4761. doi:10.1515/nanoph-2025-0461
apa: Bollmers, L., Spiegelberg, N., Rüsing, M., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Segmented finger electrodes to optimize ultra-long continuous wafer-scale
periodic poling in thin-film lithium niobate. Nanophotonics, 14,
4761. https://doi.org/10.1515/nanoph-2025-0461
bibtex: '@article{Bollmers_Spiegelberg_Rüsing_Eigner_Padberg_Silberhorn_2025, title={Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate}, volume={14}, DOI={10.1515/nanoph-2025-0461},
journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Bollmers,
Laura and Spiegelberg, Noah and Rüsing, Michael and Eigner, Christof and Padberg,
Laura and Silberhorn, Christine}, year={2025}, pages={4761} }'
chicago: 'Bollmers, Laura, Noah Spiegelberg, Michael Rüsing, Christof Eigner, Laura
Padberg, and Christine Silberhorn. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics
14 (2025): 4761. https://doi.org/10.1515/nanoph-2025-0461.'
ieee: 'L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, and C. Silberhorn,
“Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate,” Nanophotonics, vol. 14, p. 4761,
2025, doi: 10.1515/nanoph-2025-0461.'
mla: Bollmers, Laura, et al. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics,
vol. 14, Walter de Gruyter GmbH, 2025, p. 4761, doi:10.1515/nanoph-2025-0461.
short: L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, C. Silberhorn,
Nanophotonics 14 (2025) 4761.
date_created: 2025-12-01T08:45:07Z
date_updated: 2026-01-07T12:06:29Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
doi: 10.1515/nanoph-2025-0461
intvolume: ' 14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1515/nanoph-2025-0461
oa: '1'
page: '4761'
publication: Nanophotonics
publication_identifier:
issn:
- 2192-8606
- 2192-8614
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate
type: journal_article
user_id: '22501'
volume: 14
year: '2025'
...
---
_id: '63524'
abstract:
- lang: eng
text: Recommendation systems are essential for delivering personalized content across
e-commerce and streaming services. However, traditional methods often fail in
cold-start scenarios where new items lack prior interactions. Recent advances
in large language models (LLMs) offer a promising alternative. In this paper,
we adopt the retrieve-and-recommend framework and propose to fine-tune the LLM
jointly on warm-and cold-start next-item recommendation tasks, thus, mitigating
the need for separate models for both item types. We computationally compare zero-shot
prompting, in-context learning, and fine-tuning using the same LLM backbone, and
benchmark them against strong PLM-based baselines. Our findings provide practical
insights into the trade-offs between accuracy and computational cost of these
methods for next-item recommendation. To enhance reproducibility, we release the
source code under https://github. com/HayaHalimeh/LLMs-For-Next-Item-Recommendation.git.
author:
- first_name: Haya
full_name: Halimeh, Haya
id: '87673'
last_name: Halimeh
- first_name: Florian
full_name: Freese, Florian
last_name: Freese
- first_name: Oliver
full_name: Müller, Oliver
last_name: Müller
citation:
ama: 'Halimeh H, Freese F, Müller O. LLMs For Warm and Cold Next-Item Recommendation:
A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning.
In: International Conference on Information Systems Development. University
of Gdansk, Department of Business Informatics & University of Belgrade, Faculty
of Organizational Sciences; 2025. doi:10.62036/isd.2025.68'
apa: 'Halimeh, H., Freese, F., & Müller, O. (2025). LLMs For Warm and Cold Next-Item
Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning
and Fine-Tuning. International Conference on Information Systems Development.
https://doi.org/10.62036/isd.2025.68'
bibtex: '@inproceedings{Halimeh_Freese_Müller_2025, title={LLMs For Warm and Cold
Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context
Learning and Fine-Tuning}, DOI={10.62036/isd.2025.68},
booktitle={International Conference on Information Systems Development}, publisher={University
of Gdansk, Department of Business Informatics & University of Belgrade, Faculty
of Organizational Sciences}, author={Halimeh, Haya and Freese, Florian and Müller,
Oliver}, year={2025} }'
chicago: 'Halimeh, Haya, Florian Freese, and Oliver Müller. “LLMs For Warm and Cold
Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context
Learning and Fine-Tuning.” In International Conference on Information Systems
Development. University of Gdansk, Department of Business Informatics &
University of Belgrade, Faculty of Organizational Sciences, 2025. https://doi.org/10.62036/isd.2025.68.'
ieee: 'H. Halimeh, F. Freese, and O. Müller, “LLMs For Warm and Cold Next-Item Recommendation:
A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning,”
2025, doi: 10.62036/isd.2025.68.'
mla: 'Halimeh, Haya, et al. “LLMs For Warm and Cold Next-Item Recommendation: A
Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning.”
International Conference on Information Systems Development, University
of Gdansk, Department of Business Informatics & University of Belgrade, Faculty
of Organizational Sciences, 2025, doi:10.62036/isd.2025.68.'
short: 'H. Halimeh, F. Freese, O. Müller, in: International Conference on Information
Systems Development, University of Gdansk, Department of Business Informatics
& University of Belgrade, Faculty of Organizational Sciences, 2025.'
date_created: 2026-01-07T13:36:53Z
date_updated: 2026-01-07T13:47:43Z
department:
- _id: '195'
- _id: '196'
doi: 10.62036/isd.2025.68
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: International Conference on Information Systems Development
publication_identifier:
issn:
- 2938-5202
publication_status: published
publisher: University of Gdansk, Department of Business Informatics & University of
Belgrade, Faculty of Organizational Sciences
status: public
title: 'LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across
Zero-Shot Prompting, In-Context Learning and Fine-Tuning'
type: conference
user_id: '87673'
year: '2025'
...
---
_id: '63523'
abstract:
- lang: eng
text: 'Data spaces have become a strategic pillar of Europe''s digital agenda, enabling
sovereign, legally compliant data sharing within decentralized ecosystems. As
data space initiatives evolve, personalized recommendations are increasingly recognized
as key use cases. However, traditional recommendation approaches typically rely
on centralized aggregation of user behavior data-directly conflicting with the
core ethos of data spaces: sovereignty, privacy, and trust. Federated recommendation
systems offer a promising alternative by training models locally and exchanging
only intermediate parameters to build a global model. Despite this potential,
the integration of federated recommendation techniques and data space architectures
remains largely underexplored in research and practice. This paper addresses this
gap by designing and evaluating a prototype of a federated recommendation system
specifically tailored for data spaces and compliant with their underlying infrastructure.
Our findings highlight the viability of developing privacy-preserving, collaborative
recommendation systems within data spaces, and contribute to the broader adoption
of AI across these emerging ecosystems.'
author:
- first_name: Haya
full_name: Halimeh, Haya
id: '87673'
last_name: Halimeh
- first_name: Philipp
full_name: zur Heiden, Philipp
id: '64394'
last_name: zur Heiden
citation:
ama: 'Halimeh H, zur Heiden P. Preserving Sovereignty and Privacy for Personalization:
Designing a Federated Recommendation System for Data Spaces. In: 2025 27th
International Conference on Business Informatics (CBI). IEEE; 2025. doi:10.1109/cbi68102.2025.00019'
apa: 'Halimeh, H., & zur Heiden, P. (2025). Preserving Sovereignty and Privacy
for Personalization: Designing a Federated Recommendation System for Data Spaces.
2025 27th International Conference on Business Informatics (CBI). https://doi.org/10.1109/cbi68102.2025.00019'
bibtex: '@inproceedings{Halimeh_zur Heiden_2025, title={Preserving Sovereignty and
Privacy for Personalization: Designing a Federated Recommendation System for Data
Spaces}, DOI={10.1109/cbi68102.2025.00019},
booktitle={2025 27th International Conference on Business Informatics (CBI)},
publisher={IEEE}, author={Halimeh, Haya and zur Heiden, Philipp}, year={2025}
}'
chicago: 'Halimeh, Haya, and Philipp zur Heiden. “Preserving Sovereignty and Privacy
for Personalization: Designing a Federated Recommendation System for Data Spaces.”
In 2025 27th International Conference on Business Informatics (CBI). IEEE,
2025. https://doi.org/10.1109/cbi68102.2025.00019.'
ieee: 'H. Halimeh and P. zur Heiden, “Preserving Sovereignty and Privacy for Personalization:
Designing a Federated Recommendation System for Data Spaces,” 2025, doi: 10.1109/cbi68102.2025.00019.'
mla: 'Halimeh, Haya, and Philipp zur Heiden. “Preserving Sovereignty and Privacy
for Personalization: Designing a Federated Recommendation System for Data Spaces.”
2025 27th International Conference on Business Informatics (CBI), IEEE,
2025, doi:10.1109/cbi68102.2025.00019.'
short: 'H. Halimeh, P. zur Heiden, in: 2025 27th International Conference on Business
Informatics (CBI), IEEE, 2025.'
date_created: 2026-01-07T13:34:02Z
date_updated: 2026-01-07T13:49:45Z
department:
- _id: '195'
- _id: '196'
doi: 10.1109/cbi68102.2025.00019
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: 2025 27th International Conference on Business Informatics (CBI)
publication_status: published
publisher: IEEE
status: public
title: 'Preserving Sovereignty and Privacy for Personalization: Designing a Federated
Recommendation System for Data Spaces'
type: conference
user_id: '87673'
year: '2025'
...
---
_id: '63525'
abstract:
- lang: eng
text: "Recommender systems (RS) can support sustainable development by steering
users toward more sustainable choices. Sustainability-aware explanations represent
one avenue for contributing to this goal by foregrounding the environmental and
social aspects of the recommended products or services. This paper advances the
line of research on sustainability-aware explanations by integrating nudging mechanisms
into their design and by evaluating their effectiveness through a randomized between-subjects
online vignette experiment across two item domains (). Our findings offer actionable
design guidelines for building RS that foster sustainability-aware decision making
and enrich the empirical foundation for impact-oriented research on explanation
in RS.\r\n"
author:
- first_name: Haya
full_name: Halimeh, Haya
id: '87673'
last_name: Halimeh
- first_name: Oliver
full_name: Müller, Oliver
id: '72849'
last_name: Müller
citation:
ama: 'Halimeh H, Müller O. Towards Greener Choices: Decision Information Nudging
for Sustainability-Aware Recommender Explanations. In: ; 2025. doi:10.1007/978-3-032-13342-7'
apa: 'Halimeh, H., & Müller, O. (2025). Towards Greener Choices: Decision
Information Nudging for Sustainability-Aware Recommender Explanations. The
Second International Workshop on Recommender Systems for Sustainability and Social
Good, RecSoGood 2025, Prague, Czech Republic. https://doi.org/10.1007/978-3-032-13342-7'
bibtex: '@inproceedings{Halimeh_Müller_2025, title={Towards Greener Choices: Decision
Information Nudging for Sustainability-Aware Recommender Explanations}, DOI={10.1007/978-3-032-13342-7},
author={Halimeh, Haya and Müller, Oliver}, year={2025} }'
chicago: 'Halimeh, Haya, and Oliver Müller. “Towards Greener Choices: Decision Information
Nudging for Sustainability-Aware Recommender Explanations,” 2025. https://doi.org/10.1007/978-3-032-13342-7.'
ieee: 'H. Halimeh and O. Müller, “Towards Greener Choices: Decision Information
Nudging for Sustainability-Aware Recommender Explanations,” presented at the The
Second International Workshop on Recommender Systems for Sustainability and Social
Good, RecSoGood 2025, Prague, Czech Republic, 2025, doi: 10.1007/978-3-032-13342-7.'
mla: 'Halimeh, Haya, and Oliver Müller. Towards Greener Choices: Decision Information
Nudging for Sustainability-Aware Recommender Explanations. 2025, doi:10.1007/978-3-032-13342-7.'
short: 'H. Halimeh, O. Müller, in: 2025.'
conference:
location: Prague, Czech Republic
name: ' The Second International Workshop on Recommender Systems for Sustainability
and Social Good, RecSoGood 2025'
start_date: 2025-09-26
date_created: 2026-01-07T13:40:05Z
date_updated: 2026-01-07T13:46:50Z
department:
- _id: '195'
- _id: '196'
doi: 10.1007/978-3-032-13342-7
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/book/10.1007/978-3-032-13342-7
oa: '1'
status: public
title: 'Towards Greener Choices: Decision Information Nudging for Sustainability-Aware
Recommender Explanations'
type: conference
user_id: '87673'
year: '2025'
...
---
_id: '63527'
author:
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
- first_name: Julien
full_name: Jahneke, Julien
last_name: Jahneke
- first_name: Oliver
full_name: Reimer, Oliver
last_name: Reimer
- first_name: Stefan
full_name: Abrams, Stefan
last_name: Abrams
- first_name: Fabian
full_name: Sion, Fabian
last_name: Sion
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Sebastian
full_name: Schubert, Sebastian
last_name: Schubert
- first_name: Harald
full_name: Pfifer, Harald
last_name: Pfifer
citation:
ama: 'Henkenjohann M, Nolte U, Jahneke J, et al. Dynamic Wind Tunnel Testing of
an INDI-Based Flight Controller for a Tiltrotor-VTOL. In: AIAA SCITECH 2025
Forum. American Institute of Aeronautics and Astronautics; 2025. doi:10.2514/6.2025-2083'
apa: Henkenjohann, M., Nolte, U., Jahneke, J., Reimer, O., Abrams, S., Sion, F.,
Henke, C., Trächtler, A., Schubert, S., & Pfifer, H. (2025). Dynamic Wind
Tunnel Testing of an INDI-Based Flight Controller for a Tiltrotor-VTOL. AIAA
SCITECH 2025 Forum. https://doi.org/10.2514/6.2025-2083
bibtex: '@inproceedings{Henkenjohann_Nolte_Jahneke_Reimer_Abrams_Sion_Henke_Trächtler_Schubert_Pfifer_2025,
title={Dynamic Wind Tunnel Testing of an INDI-Based Flight Controller for a Tiltrotor-VTOL},
DOI={10.2514/6.2025-2083}, booktitle={AIAA
SCITECH 2025 Forum}, publisher={American Institute of Aeronautics and Astronautics},
author={Henkenjohann, Mark and Nolte, Udo and Jahneke, Julien and Reimer, Oliver
and Abrams, Stefan and Sion, Fabian and Henke, Christian and Trächtler, Ansgar
and Schubert, Sebastian and Pfifer, Harald}, year={2025} }'
chicago: Henkenjohann, Mark, Udo Nolte, Julien Jahneke, Oliver Reimer, Stefan Abrams,
Fabian Sion, Christian Henke, Ansgar Trächtler, Sebastian Schubert, and Harald
Pfifer. “Dynamic Wind Tunnel Testing of an INDI-Based Flight Controller for a
Tiltrotor-VTOL.” In AIAA SCITECH 2025 Forum. American Institute of Aeronautics
and Astronautics, 2025. https://doi.org/10.2514/6.2025-2083.
ieee: 'M. Henkenjohann et al., “Dynamic Wind Tunnel Testing of an INDI-Based
Flight Controller for a Tiltrotor-VTOL,” 2025, doi: 10.2514/6.2025-2083.'
mla: Henkenjohann, Mark, et al. “Dynamic Wind Tunnel Testing of an INDI-Based Flight
Controller for a Tiltrotor-VTOL.” AIAA SCITECH 2025 Forum, American Institute
of Aeronautics and Astronautics, 2025, doi:10.2514/6.2025-2083.
short: 'M. Henkenjohann, U. Nolte, J. Jahneke, O. Reimer, S. Abrams, F. Sion, C.
Henke, A. Trächtler, S. Schubert, H. Pfifer, in: AIAA SCITECH 2025 Forum, American
Institute of Aeronautics and Astronautics, 2025.'
date_created: 2026-01-07T15:43:24Z
date_updated: 2026-01-07T15:45:27Z
department:
- _id: '153'
- _id: '241'
doi: 10.2514/6.2025-2083
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arc.aiaa.org/doi/10.2514/6.2025-2083
oa: '1'
publication: AIAA SCITECH 2025 Forum
publication_status: published
publisher: American Institute of Aeronautics and Astronautics
status: public
title: Dynamic Wind Tunnel Testing of an INDI-Based Flight Controller for a Tiltrotor-VTOL
type: conference
user_id: '82875'
year: '2025'
...
---
_id: '63528'
author:
- first_name: Fabian
full_name: Reiling, Fabian
last_name: Reiling
- first_name: Maximilian
full_name: Bause, Maximilian
last_name: Bause
- first_name: Stefan
full_name: Gröger, Stefan
last_name: Gröger
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Steven
full_name: Koppert, Steven
last_name: Koppert
- first_name: Ansgar
full_name: Trächtler, Ansgar
last_name: Trächtler
citation:
ama: 'Reiling F, Bause M, Gröger S, Henke C, Koppert S, Trächtler A. Development
of a Learning-Based Control System for Robot-Assisted Grinding of Rubber Roller.
In: 2025 11th International Conference on Automation, Robotics, and Applications
(ICARA). IEEE; 2025. doi:10.1109/icara64554.2025.10977606'
apa: Reiling, F., Bause, M., Gröger, S., Henke, C., Koppert, S., & Trächtler,
A. (2025). Development of a Learning-Based Control System for Robot-Assisted Grinding
of Rubber Roller. 2025 11th International Conference on Automation, Robotics,
and Applications (ICARA). https://doi.org/10.1109/icara64554.2025.10977606
bibtex: '@inproceedings{Reiling_Bause_Gröger_Henke_Koppert_Trächtler_2025, title={Development
of a Learning-Based Control System for Robot-Assisted Grinding of Rubber Roller},
DOI={10.1109/icara64554.2025.10977606},
booktitle={2025 11th International Conference on Automation, Robotics, and Applications
(ICARA)}, publisher={IEEE}, author={Reiling, Fabian and Bause, Maximilian and
Gröger, Stefan and Henke, Christian and Koppert, Steven and Trächtler, Ansgar},
year={2025} }'
chicago: Reiling, Fabian, Maximilian Bause, Stefan Gröger, Christian Henke, Steven
Koppert, and Ansgar Trächtler. “Development of a Learning-Based Control System
for Robot-Assisted Grinding of Rubber Roller.” In 2025 11th International Conference
on Automation, Robotics, and Applications (ICARA). IEEE, 2025. https://doi.org/10.1109/icara64554.2025.10977606.
ieee: 'F. Reiling, M. Bause, S. Gröger, C. Henke, S. Koppert, and A. Trächtler,
“Development of a Learning-Based Control System for Robot-Assisted Grinding of
Rubber Roller,” 2025, doi: 10.1109/icara64554.2025.10977606.'
mla: Reiling, Fabian, et al. “Development of a Learning-Based Control System for
Robot-Assisted Grinding of Rubber Roller.” 2025 11th International Conference
on Automation, Robotics, and Applications (ICARA), IEEE, 2025, doi:10.1109/icara64554.2025.10977606.
short: 'F. Reiling, M. Bause, S. Gröger, C. Henke, S. Koppert, A. Trächtler, in:
2025 11th International Conference on Automation, Robotics, and Applications (ICARA),
IEEE, 2025.'
date_created: 2026-01-07T15:46:06Z
date_updated: 2026-01-07T15:46:51Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/icara64554.2025.10977606
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://ieeexplore.ieee.org/document/10977606
oa: '1'
publication: 2025 11th International Conference on Automation, Robotics, and Applications
(ICARA)
publication_status: published
publisher: IEEE
status: public
title: Development of a Learning-Based Control System for Robot-Assisted Grinding
of Rubber Roller
type: conference
user_id: '82875'
year: '2025'
...
---
_id: '46047'
abstract:
- lang: eng
text: This study examines the impact of tax certainty through advance tax rulings
(ATRs) on firms' risky investments under cash flow and tax uncertainty. Both firms
and governments have expressed growing concern about increasing tax uncertainty,
due to frequent tax reforms and the difficulty in applying ambiguous tax laws
and anticipating audit outcomes. One remedy is the provision of ATRs, which offer
upfront clarification of tax issues to reduce tax uncertainty and increase risk-taking.
We analyze how these uncertainties, along with different tax rates, loss offset
provisions, and ATR fees affect investment strategies. Our results suggest, first,
that ATRs encourage riskier investments, particularly in tax regimes with generous
loss offsets. We identify optimal ranges of ATR fees that benefit firms and tax
authorities. Second, we show that it may be beneficial to design ATRs with a low
or negative fee. Third, our study reveals a U-shaped relationship between firms'
risk aversion and their willingness to pay for tax certainty, with willingness
being higher for firms at low or high levels of risk aversion. In contrast, moderately
risk-averse firms are only willing to accept low fees. Overall, our results highlight
the importance of low-cost tax certainty combined with generous loss offset provisions
to encourage risky investments.
author:
- first_name: An
full_name: Chen, An
last_name: Chen
- first_name: Peter
full_name: Hieber, Peter
last_name: Hieber
- first_name: Caren
full_name: Sureth-Sloane, Caren
id: '530'
last_name: Sureth-Sloane
orcid: ' 0000-0002-8183-5901'
citation:
ama: Chen A, Hieber P, Sureth-Sloane C. How Much to Pay for Tax Certainty? The
Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty.;
2025. doi:10.1007/s10797-025-09930-8
apa: Chen, A., Hieber, P., & Sureth-Sloane, C. (2025). How Much to Pay for
Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss
Offset and Tax Uncertainty. https://doi.org/10.1007/s10797-025-09930-8
bibtex: '@book{Chen_Hieber_Sureth-Sloane_2025, title={How Much to Pay for Tax Certainty?
The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax
Uncertainty}, DOI={10.1007/s10797-025-09930-8},
author={Chen, An and Hieber, Peter and Sureth-Sloane, Caren}, year={2025} }'
chicago: Chen, An, Peter Hieber, and Caren Sureth-Sloane. How Much to Pay for
Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss
Offset and Tax Uncertainty, 2025. https://doi.org/10.1007/s10797-025-09930-8.
ieee: A. Chen, P. Hieber, and C. Sureth-Sloane, How Much to Pay for Tax Certainty?
The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax
Uncertainty. 2025.
mla: Chen, An, et al. How Much to Pay for Tax Certainty? The Role of Advance
Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty. 2025,
doi:10.1007/s10797-025-09930-8.
short: A. Chen, P. Hieber, C. Sureth-Sloane, How Much to Pay for Tax Certainty?
The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax
Uncertainty, 2025.
date_created: 2023-07-13T12:03:15Z
date_updated: 2026-01-12T12:24:11Z
department:
- _id: '187'
doi: 10.1007/s10797-025-09930-8
jel:
- G11
- H25
- M41
- M42
- M48
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10797-025-09930-8
oa: '1'
publication_status: published
status: public
title: How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky
Investment under Loss Offset and Tax Uncertainty
type: working_paper
user_id: '96670'
year: '2025'
...
---
_id: '63556'
author:
- first_name: Rolf
full_name: Biehler, Rolf
id: '16274'
last_name: Biehler
- first_name: Joachim
full_name: Engel, Joachim
last_name: Engel
- first_name: Daniel
full_name: Frischemeier, Daniel
last_name: Frischemeier
- first_name: Susanne
full_name: Podworny, Susanne
last_name: Podworny
citation:
ama: 'Biehler R, Engel J, Frischemeier D, Podworny S. Civic Statistical Literacy:
Konzept und praxisnahe Umsetzung am Beispiel des Klimawandels. mathematica
didactica. 2025;48(2). doi:10.18716/ojs/md/2025.2297'
apa: 'Biehler, R., Engel, J., Frischemeier, D., & Podworny, S. (2025). Civic
Statistical Literacy: Konzept und praxisnahe Umsetzung am Beispiel des Klimawandels.
mathematica didactica, 48(2). https://doi.org/10.18716/ojs/md/2025.2297'
bibtex: '@article{Biehler_Engel_Frischemeier_Podworny_2025, title={Civic Statistical
Literacy: Konzept und praxisnahe Umsetzung am Beispiel des Klimawandels}, volume={48},
DOI={10.18716/ojs/md/2025.2297},
number={2}, journal={mathematica didactica}, author={Biehler, Rolf and Engel,
Joachim and Frischemeier, Daniel and Podworny, Susanne}, year={2025} }'
chicago: 'Biehler, Rolf, Joachim Engel, Daniel Frischemeier, and Susanne Podworny.
“Civic Statistical Literacy: Konzept und praxisnahe Umsetzung am Beispiel des
Klimawandels.” mathematica didactica 48, no. 2 (2025). https://doi.org/10.18716/ojs/md/2025.2297.'
ieee: 'R. Biehler, J. Engel, D. Frischemeier, and S. Podworny, “Civic Statistical
Literacy: Konzept und praxisnahe Umsetzung am Beispiel des Klimawandels,” mathematica
didactica, vol. 48, no. 2, 2025, doi: 10.18716/ojs/md/2025.2297.'
mla: 'Biehler, Rolf, et al. “Civic Statistical Literacy: Konzept und praxisnahe
Umsetzung am Beispiel des Klimawandels.” mathematica didactica, vol. 48,
no. 2, 2025, doi:10.18716/ojs/md/2025.2297.'
short: R. Biehler, J. Engel, D. Frischemeier, S. Podworny, mathematica didactica
48 (2025).
date_created: 2026-01-12T11:23:57Z
date_updated: 2026-01-12T11:26:40Z
department:
- _id: '363'
doi: 10.18716/ojs/md/2025.2297
intvolume: ' 48'
issue: '2'
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://journals.ub.uni-koeln.de/index.php/mathematica_didactica/article/view/2297
oa: '1'
publication: mathematica didactica
status: public
title: 'Civic Statistical Literacy: Konzept und praxisnahe Umsetzung am Beispiel des
Klimawandels'
type: journal_article
user_id: '37888'
volume: 48
year: '2025'
...
---
_id: '63565'
author:
- first_name: Daghan Yüksel
full_name: Piskin, Daghan Yüksel
id: '76790'
last_name: Piskin
orcid: 000-0002-3358-4669
- first_name: Helen Martha
full_name: Müller, Helen Martha
id: '40188'
last_name: Müller
- first_name: Nina
full_name: Nina Skjæret-Maroni, Nina
last_name: Nina Skjæret-Maroni
- first_name: Beatrix
full_name: Vereijken, Beatrix
last_name: Vereijken
- first_name: Jochen
full_name: Baumeister, Jochen
id: '46'
last_name: Baumeister
orcid: 0000-0003-2683-5826
citation:
ama: 'Piskin DY, Müller HM, Nina Skjæret-Maroni N, Vereijken B, Baumeister J. Exergaming
Rejuvenates Resting-State Brain Complexity and Modulates Adaptability During Gameplay
in Older Adults: An EEG Multiscale Entropy Study. In: ; 2025.'
apa: 'Piskin, D. Y., Müller, H. M., Nina Skjæret-Maroni, N., Vereijken, B., &
Baumeister, J. (2025). Exergaming Rejuvenates Resting-State Brain Complexity
and Modulates Adaptability During Gameplay in Older Adults: An EEG Multiscale
Entropy Study. International Congress of Human in Motion, Piran, Slowenien.'
bibtex: '@inproceedings{Piskin_Müller_Nina Skjæret-Maroni_Vereijken_Baumeister_2025,
title={Exergaming Rejuvenates Resting-State Brain Complexity and Modulates Adaptability
During Gameplay in Older Adults: An EEG Multiscale Entropy Study}, author={Piskin,
Daghan Yüksel and Müller, Helen Martha and Nina Skjæret-Maroni, Nina and Vereijken,
Beatrix and Baumeister, Jochen}, year={2025} }'
chicago: 'Piskin, Daghan Yüksel, Helen Martha Müller, Nina Nina Skjæret-Maroni,
Beatrix Vereijken, and Jochen Baumeister. “Exergaming Rejuvenates Resting-State
Brain Complexity and Modulates Adaptability During Gameplay in Older Adults: An
EEG Multiscale Entropy Study,” 2025.'
ieee: 'D. Y. Piskin, H. M. Müller, N. Nina Skjæret-Maroni, B. Vereijken, and J.
Baumeister, “Exergaming Rejuvenates Resting-State Brain Complexity and Modulates
Adaptability During Gameplay in Older Adults: An EEG Multiscale Entropy Study,”
presented at the International Congress of Human in Motion, Piran, Slowenien,
2025.'
mla: 'Piskin, Daghan Yüksel, et al. Exergaming Rejuvenates Resting-State Brain
Complexity and Modulates Adaptability During Gameplay in Older Adults: An EEG
Multiscale Entropy Study. 2025.'
short: 'D.Y. Piskin, H.M. Müller, N. Nina Skjæret-Maroni, B. Vereijken, J. Baumeister,
in: 2025.'
conference:
end_date: 2025-10-01
location: Piran, Slowenien
name: International Congress of Human in Motion
start_date: 2025-09-28
date_created: 2026-01-12T13:42:35Z
date_updated: 2026-01-12T13:42:45Z
department:
- _id: '172'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://ichm.zrs-kp.si/wp-content/uploads/sites/3/2025/11/Zbornik-ICHM-2025_ONLINE.pdf
oa: '1'
status: public
title: 'Exergaming Rejuvenates Resting-State Brain Complexity and Modulates Adaptability
During Gameplay in Older Adults: An EEG Multiscale Entropy Study'
type: conference_abstract
user_id: '76790'
year: '2025'
...
---
_id: '63564'
author:
- first_name: Daghan Yüksel
full_name: Piskin, Daghan Yüksel
id: '76790'
last_name: Piskin
orcid: 000-0002-3358-4669
- first_name: Gjergji
full_name: Cobani, Gjergji
last_name: Cobani
- first_name: Tim
full_name: Lehmann, Tim
id: '41584'
last_name: Lehmann
- first_name: Daniel
full_name: Büchel, Daniel
id: '41088'
last_name: Büchel
- first_name: Jochen
full_name: Baumeister, Jochen
id: '46'
last_name: Baumeister
orcid: 0000-0003-2683-5826
citation:
ama: 'Piskin DY, Cobani G, Lehmann T, Büchel D, Baumeister J. Skilled passing in
football may regress following an anterior cruciate ligament injury as a result
of cortical changes: preliminary EEG evidence. In: ; 2025.'
apa: 'Piskin, D. Y., Cobani, G., Lehmann, T., Büchel, D., & Baumeister, J. (2025).
Skilled passing in football may regress following an anterior cruciate ligament
injury as a result of cortical changes: preliminary EEG evidence. European
Congress of Sport Science , Rimini.'
bibtex: '@inproceedings{Piskin_Cobani_Lehmann_Büchel_Baumeister_2025, title={Skilled
passing in football may regress following an anterior cruciate ligament injury
as a result of cortical changes: preliminary EEG evidence}, author={Piskin, Daghan
Yüksel and Cobani, Gjergji and Lehmann, Tim and Büchel, Daniel and Baumeister,
Jochen}, year={2025} }'
chicago: 'Piskin, Daghan Yüksel, Gjergji Cobani, Tim Lehmann, Daniel Büchel, and
Jochen Baumeister. “Skilled Passing in Football May Regress Following an Anterior
Cruciate Ligament Injury as a Result of Cortical Changes: Preliminary EEG Evidence,”
2025.'
ieee: 'D. Y. Piskin, G. Cobani, T. Lehmann, D. Büchel, and J. Baumeister, “Skilled
passing in football may regress following an anterior cruciate ligament injury
as a result of cortical changes: preliminary EEG evidence,” presented at the European
Congress of Sport Science , Rimini, 2025.'
mla: 'Piskin, Daghan Yüksel, et al. Skilled Passing in Football May Regress Following
an Anterior Cruciate Ligament Injury as a Result of Cortical Changes: Preliminary
EEG Evidence. 2025.'
short: 'D.Y. Piskin, G. Cobani, T. Lehmann, D. Büchel, J. Baumeister, in: 2025.'
conference:
end_date: 2025-07-04
location: Rimini
name: 'European Congress of Sport Science '
start_date: 2025-07-01
date_created: 2026-01-12T13:37:31Z
date_updated: 2026-01-12T13:39:02Z
department:
- _id: '172'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ecss.mobi/DATA/CONGRESSES/RIMINI_2025/DOCUMENTS/BOA/RIMINI_BOA_WEB.pdf
oa: '1'
status: public
title: 'Skilled passing in football may regress following an anterior cruciate ligament
injury as a result of cortical changes: preliminary EEG evidence'
type: conference_abstract
user_id: '76790'
year: '2025'
...
---
_id: '56298'
abstract:
- lang: eng
text: "In the general pattern formation (GPF) problem, a swarm of simple autonomous,\r\ndisoriented
robots must form a given pattern. The robots' simplicity imply a\r\nstrong limitation:
When the initial configuration is rotationally symmetric,\r\nonly patterns with
a similar symmetry can be formed [Yamashita, Suzyuki; TCS\r\n2010]. The only known
algorithm to form large patterns with limited visibility\r\nand without memory
requires the robots to start in a near-gathering (a swarm of\r\nconstant diameter)
[Hahn et al.; SAND 2024]. However, not only do we not know\r\nany near-gathering
algorithm guaranteed to preserve symmetry but most natural\r\ngathering strategies
trivially increase symmetries [Castenow et al.; OPODIS\r\n2022].\r\n Thus, we
study near-gathering without changing the swarm's rotational\r\nsymmetry for disoriented,
oblivious robots with limited visibility (the\r\nOBLOT-model, see [Flocchini et
al.; 2019]). We introduce a technique based on\r\nthe theory of dynamical systems
to analyze how a given algorithm affects\r\nsymmetry and provide sufficient conditions
for symmetry preservation. Until\r\nnow, it was unknown whether the considered
OBLOT-model allows for any\r\nnon-trivial algorithm that always preserves symmetry.
Our first result shows\r\nthat a variant of Go-to-the-Average always preserves
symmetry but may sometimes\r\nlead to multiple, unconnected near-gathering clusters.
Our second result is a\r\nsymmetry-preserving near-gathering algorithm that works
on swarms with a convex\r\nboundary (the outer boundary of the unit disc graph)
and without holes (circles\r\nof diameter 1 inside the boundary without any robots)."
author:
- first_name: Raphael
full_name: Gerlach, Raphael
id: '32655'
last_name: Gerlach
orcid: 0009-0002-4750-2051
- first_name: Sören
full_name: von der Gracht, Sören
id: '97359'
last_name: von der Gracht
orcid: 0000-0002-8054-2058
- first_name: Christopher
full_name: Hahn, Christopher
last_name: Hahn
- first_name: Jonas
full_name: Harbig, Jonas
id: '47213'
last_name: Harbig
- first_name: Peter
full_name: Kling, Peter
last_name: Kling
citation:
ama: 'Gerlach R, von der Gracht S, Hahn C, Harbig J, Kling P. Symmetry Preservation
in Swarms of Oblivious Robots with Limited Visibility. In: Bonomi S, Galletta
L, Rivière Etienne, Schiavoni Valerio, eds. 28th International Conference
on Principles of Distributed Systems (OPODIS 2024). Vol 324. Leibniz International
Proceedings in Informatics (LIPIcs). Schloss Dagstuhl -- Leibniz-Zentrum für Informatik;
2025. doi:10.4230/LIPIcs.OPODIS.2024.13'
apa: Gerlach, R., von der Gracht, S., Hahn, C., Harbig, J., & Kling, P. (2025).
Symmetry Preservation in Swarms of Oblivious Robots with Limited Visibility.
In S. Bonomi, L. Galletta, Etienne Rivière, & Valerio Schiavoni (Eds.),
28th International Conference on Principles of Distributed Systems (OPODIS
2024) (Vol. 324). Schloss Dagstuhl -- Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.OPODIS.2024.13
bibtex: '@inproceedings{Gerlach_von der Gracht_Hahn_Harbig_Kling_2025, series={Leibniz
International Proceedings in Informatics (LIPIcs)}, title={Symmetry Preservation
in Swarms of Oblivious Robots with Limited Visibility}, volume={324}, DOI={10.4230/LIPIcs.OPODIS.2024.13},
booktitle={28th International Conference on Principles of Distributed Systems
(OPODIS 2024)}, publisher={Schloss Dagstuhl -- Leibniz-Zentrum für Informatik},
author={Gerlach, Raphael and von der Gracht, Sören and Hahn, Christopher and Harbig,
Jonas and Kling, Peter}, editor={Bonomi, Silvia and Galletta, Letterio and Rivière, Etienne
and Schiavoni, Valerio}, year={2025}, collection={Leibniz International Proceedings
in Informatics (LIPIcs)} }'
chicago: Gerlach, Raphael, Sören von der Gracht, Christopher Hahn, Jonas Harbig,
and Peter Kling. “Symmetry Preservation in Swarms of Oblivious Robots with Limited
Visibility.” In 28th International Conference on Principles of Distributed
Systems (OPODIS 2024), edited by Silvia Bonomi, Letterio Galletta, Etienne
Rivière, and Valerio Schiavoni, Vol. 324. Leibniz International Proceedings in
Informatics (LIPIcs). Schloss Dagstuhl -- Leibniz-Zentrum für Informatik, 2025.
https://doi.org/10.4230/LIPIcs.OPODIS.2024.13.
ieee: 'R. Gerlach, S. von der Gracht, C. Hahn, J. Harbig, and P. Kling, “Symmetry
Preservation in Swarms of Oblivious Robots with Limited Visibility,” in 28th
International Conference on Principles of Distributed Systems (OPODIS 2024),
Lucca, Italy, 2025, vol. 324, doi: 10.4230/LIPIcs.OPODIS.2024.13.'
mla: Gerlach, Raphael, et al. “Symmetry Preservation in Swarms of Oblivious Robots
with Limited Visibility.” 28th International Conference on Principles of Distributed
Systems (OPODIS 2024), edited by Silvia Bonomi et al., vol. 324, Schloss Dagstuhl
-- Leibniz-Zentrum für Informatik, 2025, doi:10.4230/LIPIcs.OPODIS.2024.13.
short: 'R. Gerlach, S. von der Gracht, C. Hahn, J. Harbig, P. Kling, in: S. Bonomi,
L. Galletta, Etienne Rivière, Valerio Schiavoni (Eds.), 28th International Conference
on Principles of Distributed Systems (OPODIS 2024), Schloss Dagstuhl -- Leibniz-Zentrum
für Informatik, 2025.'
conference:
end_date: 2024-12-13
location: Lucca, Italy
name: 28th International Conference on Principles of Distributed Systems (OPODIS
2024)
start_date: 2024-12-11
date_created: 2024-10-01T13:29:43Z
date_updated: 2025-01-09T11:39:19Z
department:
- _id: '101'
doi: 10.4230/LIPIcs.OPODIS.2024.13
editor:
- first_name: Silvia
full_name: Bonomi, Silvia
last_name: Bonomi
- first_name: Letterio
full_name: Galletta, Letterio
last_name: Galletta
- first_name: ' Etienne'
full_name: Rivière, Etienne
last_name: Rivière
- first_name: ' Valerio'
full_name: Schiavoni, Valerio
last_name: Schiavoni
external_id:
arxiv:
- '2409.19277'
intvolume: ' 324'
keyword:
- Swarm Algorithm
- Swarm Robots
- Distributed Algorithm
- Pattern Formation
- Limited Visibility
- Oblivious
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2409.19277
oa: '1'
project:
- _id: '106'
grant_number: '453112019'
name: 'Algorithmen für Schwarmrobotik: Verteiltes Rechnen trifft Dynamische Systeme'
publication: 28th International Conference on Principles of Distributed Systems (OPODIS
2024)
publication_identifier:
isbn:
- 978-3-95977-360-7
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl -- Leibniz-Zentrum für Informatik
series_title: Leibniz International Proceedings in Informatics (LIPIcs)
status: public
title: Symmetry Preservation in Swarms of Oblivious Robots with Limited Visibility
type: conference
user_id: '97359'
volume: 324
year: '2025'
...
---
_id: '58544'
abstract:
- lang: eng
text: 'We introduce a new classification of multimode states with a fixed number
of photons. This classification is based on the factorizability of homogeneous
multivariate polynomials and is invariant under unitary transformations. The classes
physically correspond to field excitations in terms of single and multiple photons,
each of which being in an arbitrary irreducible superposition of quantized modes.
We further show how the transitions between classes are rendered possible by photon
addition, photon subtraction, and photon-projection nonlinearities. We explicitly
put forward a design for a multilayer interferometer in which the states for different
classes can be generated with state-of-the-art experimental techniques. Limitations
of the proposed designs are analyzed using the introduced classification, providing
a benchmark for the robustness of certain states and classes. '
author:
- first_name: Denis
full_name: Kopylov, Denis
id: '98502'
last_name: Kopylov
- first_name: Christian
full_name: Offen, Christian
id: '85279'
last_name: Offen
orcid: 0000-0002-5940-8057
- first_name: Laura
full_name: Ares, Laura
last_name: Ares
- first_name: Boris Edgar
full_name: Wembe Moafo, Boris Edgar
id: '95394'
last_name: Wembe Moafo
- first_name: Sina
full_name: Ober-Blöbaum, Sina
id: '16494'
last_name: Ober-Blöbaum
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Polina
full_name: Sharapova, Polina
id: '60286'
last_name: Sharapova
- first_name: Jan
full_name: Sperling, Jan
id: '75127'
last_name: Sperling
orcid: 0000-0002-5844-3205
citation:
ama: Kopylov D, Offen C, Ares L, et al. Multiphoton, multimode state classification
for nonlinear optical circuits .
apa: Kopylov, D., Offen, C., Ares, L., Wembe Moafo, B. E., Ober-Blöbaum, S., Meier,
T., Sharapova, P., & Sperling, J. (n.d.). Multiphoton, multimode state
classification for nonlinear optical circuits .
bibtex: '@article{Kopylov_Offen_Ares_Wembe Moafo_Ober-Blöbaum_Meier_Sharapova_Sperling,
title={Multiphoton, multimode state classification for nonlinear optical circuits
}, author={Kopylov, Denis and Offen, Christian and Ares, Laura and Wembe Moafo,
Boris Edgar and Ober-Blöbaum, Sina and Meier, Torsten and Sharapova, Polina and
Sperling, Jan} }'
chicago: Kopylov, Denis, Christian Offen, Laura Ares, Boris Edgar Wembe Moafo, Sina
Ober-Blöbaum, Torsten Meier, Polina Sharapova, and Jan Sperling. “Multiphoton,
Multimode State Classification for Nonlinear Optical Circuits ,” n.d.
ieee: D. Kopylov et al., “Multiphoton, multimode state classification for
nonlinear optical circuits .” .
mla: Kopylov, Denis, et al. Multiphoton, Multimode State Classification for Nonlinear
Optical Circuits .
short: D. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier,
P. Sharapova, J. Sperling, (n.d.).
date_created: 2025-02-10T08:26:45Z
date_updated: 2025-02-10T08:36:12Z
department:
- _id: '623'
- _id: '15'
- _id: '636'
external_id:
arxiv:
- '2502.05123'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2502.05123
oa: '1'
publication_status: submitted
status: public
title: 'Multiphoton, multimode state classification for nonlinear optical circuits '
type: preprint
user_id: '85279'
year: '2025'
...