---
_id: '63150'
author:
- first_name: Charley
full_name: Cummings, Charley
last_name: Cummings
- first_name: Sira
full_name: Gratz, Sira
last_name: Gratz
- first_name: Ellen
full_name: Kirkman, Ellen
last_name: Kirkman
- first_name: Janina Carmen
full_name: Letz, Janina Carmen
id: '121953'
last_name: Letz
orcid: 0000-0002-5497-8296
- first_name: J. Daisie
full_name: Rock, J. Daisie
last_name: Rock
- first_name: Špela
full_name: Špenko, Špela
last_name: Špenko
citation:
ama: Cummings C, Gratz S, Kirkman E, Letz JC, Rock JD, Špenko Š. An equivalence
linking CM-types $A_\infty$ and $D_\infty$. Published online 2025:1-9.
apa: Cummings, C., Gratz, S., Kirkman, E., Letz, J. C., Rock, J. D., & Špenko,
Š. (2025). An equivalence linking CM-types $A_\infty$ and $D_\infty$ (pp.
1–9).
bibtex: '@article{Cummings_Gratz_Kirkman_Letz_Rock_Špenko_2025, title={An equivalence
linking CM-types $A_\infty$ and $D_\infty$}, author={Cummings, Charley and Gratz,
Sira and Kirkman, Ellen and Letz, Janina Carmen and Rock, J. Daisie and Špenko,
Špela}, year={2025}, pages={1–9} }'
chicago: Cummings, Charley, Sira Gratz, Ellen Kirkman, Janina Carmen Letz, J. Daisie
Rock, and Špela Špenko. “An Equivalence Linking CM-Types $A_\infty$ and $D_\infty$,”
2025.
ieee: C. Cummings, S. Gratz, E. Kirkman, J. C. Letz, J. D. Rock, and Š. Špenko,
“An equivalence linking CM-types $A_\infty$ and $D_\infty$.” pp. 1–9, 2025.
mla: Cummings, Charley, et al. An Equivalence Linking CM-Types $A_\infty$ and
$D_\infty$. 2025, pp. 1–9.
short: C. Cummings, S. Gratz, E. Kirkman, J.C. Letz, J.D. Rock, Š. Špenko, (2025)
1–9.
date_created: 2025-12-16T14:38:59Z
date_updated: 2025-12-16T14:40:06Z
department:
- _id: '10'
language:
- iso: eng
page: 1-9
related_material:
link:
- relation: confirmation
url: https://arxiv.org/abs/2510.24642
status: public
title: An equivalence linking CM-types $A_\infty$ and $D_\infty$
type: preprint
user_id: '121953'
year: '2025'
...
---
_id: '63149'
author:
- first_name: Antonia
full_name: Kekkou, Antonia
last_name: Kekkou
- first_name: Janina Carmen
full_name: Letz, Janina Carmen
id: '121953'
last_name: Letz
orcid: 0000-0002-5497-8296
- first_name: Marc
full_name: Stephan, Marc
last_name: Stephan
citation:
ama: Kekkou A, Letz JC, Stephan M. Regular sequences for triangulated categories.
Published online 2025:1-37.
apa: Kekkou, A., Letz, J. C., & Stephan, M. (2025). Regular sequences for
triangulated categories (pp. 1–37).
bibtex: '@article{Kekkou_Letz_Stephan_2025, title={Regular sequences for triangulated
categories}, author={Kekkou, Antonia and Letz, Janina Carmen and Stephan, Marc},
year={2025}, pages={1–37} }'
chicago: Kekkou, Antonia, Janina Carmen Letz, and Marc Stephan. “Regular Sequences
for Triangulated Categories,” 2025.
ieee: A. Kekkou, J. C. Letz, and M. Stephan, “Regular sequences for triangulated
categories.” pp. 1–37, 2025.
mla: Kekkou, Antonia, et al. Regular Sequences for Triangulated Categories.
2025, pp. 1–37.
short: A. Kekkou, J.C. Letz, M. Stephan, (2025) 1–37.
date_created: 2025-12-16T14:38:56Z
date_updated: 2025-12-16T14:42:14Z
department:
- _id: '10'
extern: '1'
language:
- iso: eng
page: 1-37
related_material:
link:
- relation: confirmation
url: https://arxiv.org/abs/2509.09941
status: public
title: Regular sequences for triangulated categories
type: preprint
user_id: '121953'
year: '2025'
...
---
_id: '63148'
author:
- first_name: Janina Carmen
full_name: Letz, Janina Carmen
id: '121953'
last_name: Letz
orcid: 0000-0002-5497-8296
citation:
ama: Letz JC. The Rouquier dimension of the category of perfect complexes over a
regular ring. Published online 2025:1-7.
apa: Letz, J. C. (2025). The Rouquier dimension of the category of perfect complexes
over a regular ring (pp. 1–7).
bibtex: '@article{Letz_2025, title={The Rouquier dimension of the category of perfect
complexes over a regular ring}, author={Letz, Janina Carmen}, year={2025}, pages={1–7}
}'
chicago: Letz, Janina Carmen. “The Rouquier Dimension of the Category of Perfect
Complexes over a Regular Ring,” 2025.
ieee: J. C. Letz, “The Rouquier dimension of the category of perfect complexes over
a regular ring.” pp. 1–7, 2025.
mla: Letz, Janina Carmen. The Rouquier Dimension of the Category of Perfect Complexes
over a Regular Ring. 2025, pp. 1–7.
short: J.C. Letz, (2025) 1–7.
date_created: 2025-12-16T14:38:52Z
date_updated: 2025-12-16T14:47:53Z
department:
- _id: '10'
extern: '1'
language:
- iso: eng
page: 1-7
related_material:
link:
- relation: confirmation
url: https://arxiv.org/abs/2506.24038
status: public
title: The Rouquier dimension of the category of perfect complexes over a regular
ring
type: preprint
user_id: '121953'
year: '2025'
...
---
_id: '59507'
abstract:
- lang: eng
text: Differential equations posed on quadratic matrix Lie groups arise in the context
of classical mechanics and quantum dynamical systems. Lie group numerical integrators
preserve the constants of motions defining the Lie group. Thus, they respect important
physical laws of the dynamical system, such as unitarity and energy conservation
in the context of quantum dynamical systems, for instance. In this article we
develop a high-order commutator free Lie group integrator for non-autonomous differential
equations evolving on quadratic Lie groups. Instead of matrix exponentials, which
are expensive to evaluate and need to be approximated by appropriate rational
functions in order to preserve the Lie group structure, the proposed method is
obtained as a composition of Cayley transforms which naturally respect the structure
of quadratic Lie groups while being computationally efficient to evaluate. Unlike
Cayley-Magnus methods the method is also free from nested matrix commutators.
author:
- first_name: Boris Edgar
full_name: Wembe Moafo, Boris Edgar
id: '95394'
last_name: Wembe Moafo
- first_name: 'Cristian '
full_name: 'Offen, Cristian '
last_name: Offen
- first_name: Sofya
full_name: Maslovskaya, Sofya
id: '87909'
last_name: Maslovskaya
- first_name: Sina
full_name: Ober-Blöbaum, Sina
id: '16494'
last_name: Ober-Blöbaum
- first_name: Pranav
full_name: Singh, Pranav
last_name: Singh
citation:
ama: Wembe Moafo BE, Offen C, Maslovskaya S, Ober-Blöbaum S, Singh P. Commutator-free
Cayley methods. J Comput Appl Math. 477(15). doi:10.1016/j.cam.2025.117184
apa: Wembe Moafo, B. E., Offen, C., Maslovskaya, S., Ober-Blöbaum, S., & Singh,
P. (n.d.). Commutator-free Cayley methods. J. Comput. Appl. Math, 477(15).
https://doi.org/10.1016/j.cam.2025.117184
bibtex: '@article{Wembe Moafo_Offen_Maslovskaya_Ober-Blöbaum_Singh, title={Commutator-free
Cayley methods}, volume={477}, DOI={10.1016/j.cam.2025.117184},
number={15}, journal={J. Comput. Appl. Math}, author={Wembe Moafo, Boris Edgar
and Offen, Cristian and Maslovskaya, Sofya and Ober-Blöbaum, Sina and Singh,
Pranav} }'
chicago: Wembe Moafo, Boris Edgar, Cristian Offen, Sofya Maslovskaya, Sina Ober-Blöbaum,
and Pranav Singh. “Commutator-Free Cayley Methods.” J. Comput. Appl. Math
477, no. 15 (n.d.). https://doi.org/10.1016/j.cam.2025.117184.
ieee: 'B. E. Wembe Moafo, C. Offen, S. Maslovskaya, S. Ober-Blöbaum, and P. Singh,
“Commutator-free Cayley methods,” J. Comput. Appl. Math, vol. 477, no.
15, doi: 10.1016/j.cam.2025.117184.'
mla: Wembe Moafo, Boris Edgar, et al. “Commutator-Free Cayley Methods.” J. Comput.
Appl. Math, vol. 477, no. 15, doi:10.1016/j.cam.2025.117184.
short: B.E. Wembe Moafo, C. Offen, S. Maslovskaya, S. Ober-Blöbaum, P. Singh, J.
Comput. Appl. Math 477 (n.d.).
date_created: 2025-04-10T14:42:52Z
date_updated: 2025-12-16T15:17:27Z
department:
- _id: '94'
doi: 10.1016/j.cam.2025.117184
intvolume: ' 477'
issue: '15'
language:
- iso: eng
publication: J. Comput. Appl. Math
publication_status: submitted
status: public
title: Commutator-free Cayley methods
type: journal_article
user_id: '95394'
volume: 477
year: '2025'
...
---
_id: '63157'
abstract:
- lang: eng
text: Three-phase cascaded H-bridge converters (CHBs) in star configuration require
reliable current controllers to evenly charge the module DC-link capacitors. Conventionally,
a current control in dq-coordinates is utilized. At steady state, the resulting
calculated reference arm voltages are sinusoidal, have identical amplitudes and
show a phase shift of 120 degree to each other. For balanced grid inductors, the
resulting grid currents also have the same amplitude. However, own simulations
show that unbalanced grid inductors always lead to different grid current amplitudes
(4% difference in this case). As a result, the averaged charging module powers
differ and the peak DC-link capacitor voltage rises as well. In the first step,
an adaptation of an existing zero-sequence voltage injection is proposed. For
balanced grid inductors, it converges to the 3rd harmonic voltage injection which
can reduce the peak-to-peak DC-link voltage ripple up by to 50% and balances the
power between the phases. However, unbalanced grid inductors still lead to the
same unbalanced grid currents of 4%. Therefore, a new method with 4 integrators
based on linear regression is proposed to achieve sinusoidal grid currents for
unbalanced inductors. The proposed method has a similar transient dynamic as the
conventional dq control, but balances the grid currents nearly ideally. Simulation
results of a 1MW cascaded H bridge and a scaled-down prototype verify the proposed
method.
author:
- first_name: Roland
full_name: Unruh, Roland
id: '34289'
last_name: Unruh
- first_name: Joachim
full_name: Böcker, Joachim
id: '66'
last_name: Böcker
orcid: 0000-0002-8480-7295
- first_name: Frank
full_name: Schafmeister, Frank
id: '71291'
last_name: Schafmeister
citation:
ama: 'Unruh R, Böcker J, Schafmeister F. Three-Phase Instantaneous Current Controller
for Unbalanced Grid Inductors Without DQ Transform for Cascaded H-Bridge Converters.
In: 2025 Energy Conversion Congress &Amp; Expo Europe (ECCE Europe).
IEEE; 2025. doi:10.1109/ecce-europe62795.2025.11238538'
apa: Unruh, R., Böcker, J., & Schafmeister, F. (2025). Three-Phase Instantaneous
Current Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded
H-Bridge Converters. 2025 Energy Conversion Congress &Amp; Expo Europe
(ECCE Europe). 2025 Energy Conversion Congress & Expo Europe (ECCE Europe),
Birmingham, United Kingdom. https://doi.org/10.1109/ecce-europe62795.2025.11238538
bibtex: '@inproceedings{Unruh_Böcker_Schafmeister_2025, title={Three-Phase Instantaneous
Current Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded
H-Bridge Converters}, DOI={10.1109/ecce-europe62795.2025.11238538},
booktitle={2025 Energy Conversion Congress & Expo Europe (ECCE Europe)},
publisher={IEEE}, author={Unruh, Roland and Böcker, Joachim and Schafmeister,
Frank}, year={2025} }'
chicago: Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Three-Phase Instantaneous
Current Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded
H-Bridge Converters.” In 2025 Energy Conversion Congress &Amp; Expo
Europe (ECCE Europe). IEEE, 2025. https://doi.org/10.1109/ecce-europe62795.2025.11238538.
ieee: 'R. Unruh, J. Böcker, and F. Schafmeister, “Three-Phase Instantaneous Current
Controller for Unbalanced Grid Inductors Without DQ Transform for Cascaded H-Bridge
Converters,” presented at the 2025 Energy Conversion Congress & Expo Europe
(ECCE Europe), Birmingham, United Kingdom, 2025, doi: 10.1109/ecce-europe62795.2025.11238538.'
mla: Unruh, Roland, et al. “Three-Phase Instantaneous Current Controller for Unbalanced
Grid Inductors Without DQ Transform for Cascaded H-Bridge Converters.” 2025
Energy Conversion Congress &Amp; Expo Europe (ECCE Europe), IEEE,
2025, doi:10.1109/ecce-europe62795.2025.11238538.
short: 'R. Unruh, J. Böcker, F. Schafmeister, in: 2025 Energy Conversion Congress
&Amp; Expo Europe (ECCE Europe), IEEE, 2025.'
conference:
end_date: 2025-09-04
location: Birmingham, United Kingdom
name: 2025 Energy Conversion Congress & Expo Europe (ECCE Europe)
start_date: 2025-09-01
date_created: 2025-12-16T15:20:55Z
date_updated: 2025-12-16T15:25:38Z
department:
- _id: '52'
doi: 10.1109/ecce-europe62795.2025.11238538
keyword:
- Cascaded H-Bridge
- Current Control
- dq Transformation
- Linear Regression
- Unbalanced Inductors
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/document/11238538
publication: 2025 Energy Conversion Congress & Expo Europe (ECCE Europe)
publication_status: published
publisher: IEEE
status: public
title: Three-Phase Instantaneous Current Controller for Unbalanced Grid Inductors
Without DQ Transform for Cascaded H-Bridge Converters
type: conference
user_id: '34289'
year: '2025'
...
---
_id: '63187'
author:
- first_name: Arnott Jeffery Joel
full_name: Kidner, Arnott Jeffery Joel
id: '111755'
last_name: Kidner
- first_name: Eckhard
full_name: Steffen, Eckhard
id: '15548'
last_name: Steffen
orcid: 0000-0002-9808-7401
- first_name: Weiqiang
full_name: Yu, Weiqiang
id: '117508'
last_name: Yu
citation:
ama: Kidner AJJ, Steffen E, Yu W. Edge-coloring 4- and 5-regular projective planar
graphs with no Petersen-minor. arXiv:251214285. Published online 2025.
apa: Kidner, A. J. J., Steffen, E., & Yu, W. (2025). Edge-coloring 4- and 5-regular
projective planar graphs with no Petersen-minor. In arXiv:2512.14285.
bibtex: '@article{Kidner_Steffen_Yu_2025, title={Edge-coloring 4- and 5-regular
projective planar graphs with no Petersen-minor}, journal={arXiv:2512.14285},
author={Kidner, Arnott Jeffery Joel and Steffen, Eckhard and Yu, Weiqiang}, year={2025}
}'
chicago: Kidner, Arnott Jeffery Joel, Eckhard Steffen, and Weiqiang Yu. “Edge-Coloring
4- and 5-Regular Projective Planar Graphs with No Petersen-Minor.” ArXiv:2512.14285,
2025.
ieee: A. J. J. Kidner, E. Steffen, and W. Yu, “Edge-coloring 4- and 5-regular projective
planar graphs with no Petersen-minor,” arXiv:2512.14285. 2025.
mla: Kidner, Arnott Jeffery Joel, et al. “Edge-Coloring 4- and 5-Regular Projective
Planar Graphs with No Petersen-Minor.” ArXiv:2512.14285, 2025.
short: A.J.J. Kidner, E. Steffen, W. Yu, ArXiv:2512.14285 (2025).
date_created: 2025-12-17T14:40:23Z
date_updated: 2025-12-18T13:17:18Z
department:
- _id: '542'
external_id:
arxiv:
- '2512.14285'
language:
- iso: eng
publication: arXiv:2512.14285
status: public
title: Edge-coloring 4- and 5-regular projective planar graphs with no Petersen-minor
type: preprint
user_id: '15540'
year: '2025'
...
---
_id: '60746'
author:
- first_name: Darius
full_name: Jakobeit, Darius
last_name: Jakobeit
- first_name: Mario
full_name: Peña López, Mario
id: '82862'
last_name: Peña López
orcid: 0000-0001-5381-3660
- first_name: Maximilian
full_name: Schenke, Maximilian
id: '52638'
last_name: Schenke
orcid: 0000-0001-5427-9527
- first_name: Barnabas
full_name: Haucke-Korber, Barnabas
id: '93461'
last_name: Haucke-Korber
orcid: 0000-0003-0862-2069
- first_name: Oliver
full_name: Wallscheid, Oliver
id: '11291'
last_name: Wallscheid
orcid: https://orcid.org/0000-0001-9362-8777
citation:
ama: 'Jakobeit D, Peña López M, Schenke M, Haucke-Korber B, Wallscheid O. Structural
Optimization of Meta-Reinforcement Learning-based Finite-Control-Set Direct Torque
Control of Permanent Magnet Synchronous Motors. In: 2025 IEEE International
Electric Machines & Drives Conference (IEMDC). IEEE; 2025. doi:10.1109/iemdc60492.2025.11061179'
apa: Jakobeit, D., Peña López, M., Schenke, M., Haucke-Korber, B., & Wallscheid,
O. (2025). Structural Optimization of Meta-Reinforcement Learning-based Finite-Control-Set
Direct Torque Control of Permanent Magnet Synchronous Motors. 2025 IEEE International
Electric Machines & Drives Conference (IEMDC). https://doi.org/10.1109/iemdc60492.2025.11061179
bibtex: '@inproceedings{Jakobeit_Peña López_Schenke_Haucke-Korber_Wallscheid_2025,
title={Structural Optimization of Meta-Reinforcement Learning-based Finite-Control-Set
Direct Torque Control of Permanent Magnet Synchronous Motors}, DOI={10.1109/iemdc60492.2025.11061179},
booktitle={2025 IEEE International Electric Machines & Drives Conference (IEMDC)},
publisher={IEEE}, author={Jakobeit, Darius and Peña López, Mario and Schenke,
Maximilian and Haucke-Korber, Barnabas and Wallscheid, Oliver}, year={2025} }'
chicago: Jakobeit, Darius, Mario Peña López, Maximilian Schenke, Barnabas Haucke-Korber,
and Oliver Wallscheid. “Structural Optimization of Meta-Reinforcement Learning-Based
Finite-Control-Set Direct Torque Control of Permanent Magnet Synchronous Motors.”
In 2025 IEEE International Electric Machines & Drives Conference (IEMDC).
IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061179.
ieee: 'D. Jakobeit, M. Peña López, M. Schenke, B. Haucke-Korber, and O. Wallscheid,
“Structural Optimization of Meta-Reinforcement Learning-based Finite-Control-Set
Direct Torque Control of Permanent Magnet Synchronous Motors,” 2025, doi: 10.1109/iemdc60492.2025.11061179.'
mla: Jakobeit, Darius, et al. “Structural Optimization of Meta-Reinforcement Learning-Based
Finite-Control-Set Direct Torque Control of Permanent Magnet Synchronous Motors.”
2025 IEEE International Electric Machines & Drives Conference (IEMDC),
IEEE, 2025, doi:10.1109/iemdc60492.2025.11061179.
short: 'D. Jakobeit, M. Peña López, M. Schenke, B. Haucke-Korber, O. Wallscheid,
in: 2025 IEEE International Electric Machines & Drives Conference (IEMDC),
IEEE, 2025.'
date_created: 2025-07-25T12:26:51Z
date_updated: 2025-12-19T12:42:54Z
department:
- _id: '52'
doi: 10.1109/iemdc60492.2025.11061179
language:
- iso: eng
publication: 2025 IEEE International Electric Machines & Drives Conference (IEMDC)
publication_status: published
publisher: IEEE
status: public
title: Structural Optimization of Meta-Reinforcement Learning-based Finite-Control-Set
Direct Torque Control of Permanent Magnet Synchronous Motors
type: conference
user_id: '93461'
year: '2025'
...
---
_id: '60745'
author:
- first_name: Barnabas
full_name: Haucke-Korber, Barnabas
id: '93461'
last_name: Haucke-Korber
orcid: 0000-0003-0862-2069
- first_name: Nyi Nyi
full_name: Aung, Nyi Nyi
last_name: Aung
- first_name: Maximilian
full_name: Schenke, Maximilian
id: '52638'
last_name: Schenke
orcid: 0000-0001-5427-9527
- first_name: Mario
full_name: Peña López, Mario
id: '82862'
last_name: Peña López
orcid: 0000-0001-5381-3660
- first_name: Darius
full_name: Jakobeit, Darius
last_name: Jakobeit
- first_name: Oliver
full_name: Wallscheid, Oliver
id: '11291'
last_name: Wallscheid
orcid: https://orcid.org/0000-0001-9362-8777
citation:
ama: 'Haucke-Korber B, Aung NN, Schenke M, Peña López M, Jakobeit D, Wallscheid
O. Reinforcement Learning-based Direct Torque Control of Externally Excited Synchronous
Motors: a Proof of Concept. In: 2025 IEEE International Electric Machines &
Drives Conference (IEMDC). IEEE; 2025. doi:10.1109/iemdc60492.2025.11061093'
apa: 'Haucke-Korber, B., Aung, N. N., Schenke, M., Peña López, M., Jakobeit, D.,
& Wallscheid, O. (2025). Reinforcement Learning-based Direct Torque Control
of Externally Excited Synchronous Motors: a Proof of Concept. 2025 IEEE International
Electric Machines & Drives Conference (IEMDC). https://doi.org/10.1109/iemdc60492.2025.11061093'
bibtex: '@inproceedings{Haucke-Korber_Aung_Schenke_Peña López_Jakobeit_Wallscheid_2025,
title={Reinforcement Learning-based Direct Torque Control of Externally Excited
Synchronous Motors: a Proof of Concept}, DOI={10.1109/iemdc60492.2025.11061093},
booktitle={2025 IEEE International Electric Machines & Drives Conference (IEMDC)},
publisher={IEEE}, author={Haucke-Korber, Barnabas and Aung, Nyi Nyi and Schenke,
Maximilian and Peña López, Mario and Jakobeit, Darius and Wallscheid, Oliver},
year={2025} }'
chicago: 'Haucke-Korber, Barnabas, Nyi Nyi Aung, Maximilian Schenke, Mario Peña
López, Darius Jakobeit, and Oliver Wallscheid. “Reinforcement Learning-Based Direct
Torque Control of Externally Excited Synchronous Motors: A Proof of Concept.”
In 2025 IEEE International Electric Machines & Drives Conference (IEMDC).
IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061093.'
ieee: 'B. Haucke-Korber, N. N. Aung, M. Schenke, M. Peña López, D. Jakobeit, and
O. Wallscheid, “Reinforcement Learning-based Direct Torque Control of Externally
Excited Synchronous Motors: a Proof of Concept,” 2025, doi: 10.1109/iemdc60492.2025.11061093.'
mla: 'Haucke-Korber, Barnabas, et al. “Reinforcement Learning-Based Direct Torque
Control of Externally Excited Synchronous Motors: A Proof of Concept.” 2025
IEEE International Electric Machines & Drives Conference (IEMDC), IEEE,
2025, doi:10.1109/iemdc60492.2025.11061093.'
short: 'B. Haucke-Korber, N.N. Aung, M. Schenke, M. Peña López, D. Jakobeit, O.
Wallscheid, in: 2025 IEEE International Electric Machines & Drives Conference
(IEMDC), IEEE, 2025.'
date_created: 2025-07-25T12:26:35Z
date_updated: 2025-12-19T12:43:17Z
department:
- _id: '52'
doi: 10.1109/iemdc60492.2025.11061093
language:
- iso: eng
publication: 2025 IEEE International Electric Machines & Drives Conference (IEMDC)
publication_status: published
publisher: IEEE
status: public
title: 'Reinforcement Learning-based Direct Torque Control of Externally Excited Synchronous
Motors: a Proof of Concept'
type: conference
user_id: '93461'
year: '2025'
...
---
_id: '60744'
author:
- first_name: Mario
full_name: Peña López, Mario
id: '82862'
last_name: Peña López
orcid: 0000-0001-5381-3660
- first_name: Maximilian
full_name: Schenke, Maximilian
id: '52638'
last_name: Schenke
orcid: 0000-0001-5427-9527
- first_name: Darius
full_name: Jakobeit, Darius
last_name: Jakobeit
- first_name: Barnabas
full_name: Haucke-Korber, Barnabas
id: '93461'
last_name: Haucke-Korber
orcid: 0000-0003-0862-2069
- first_name: Oliver
full_name: Wallscheid, Oliver
id: '11291'
last_name: Wallscheid
orcid: https://orcid.org/0000-0001-9362-8777
citation:
ama: 'Peña López M, Schenke M, Jakobeit D, Haucke-Korber B, Wallscheid O. Reinforcement
Learning Control of Three-Level Converter Permanent Magnet Synchronous Machine
Drives. In: 2025 IEEE International Electric Machines & Drives Conference
(IEMDC). IEEE; 2025. doi:10.1109/iemdc60492.2025.11061032'
apa: Peña López, M., Schenke, M., Jakobeit, D., Haucke-Korber, B., & Wallscheid,
O. (2025). Reinforcement Learning Control of Three-Level Converter Permanent Magnet
Synchronous Machine Drives. 2025 IEEE International Electric Machines &
Drives Conference (IEMDC). https://doi.org/10.1109/iemdc60492.2025.11061032
bibtex: '@inproceedings{Peña López_Schenke_Jakobeit_Haucke-Korber_Wallscheid_2025,
title={Reinforcement Learning Control of Three-Level Converter Permanent Magnet
Synchronous Machine Drives}, DOI={10.1109/iemdc60492.2025.11061032},
booktitle={2025 IEEE International Electric Machines & Drives Conference (IEMDC)},
publisher={IEEE}, author={Peña López, Mario and Schenke, Maximilian and Jakobeit,
Darius and Haucke-Korber, Barnabas and Wallscheid, Oliver}, year={2025} }'
chicago: Peña López, Mario, Maximilian Schenke, Darius Jakobeit, Barnabas Haucke-Korber,
and Oliver Wallscheid. “Reinforcement Learning Control of Three-Level Converter
Permanent Magnet Synchronous Machine Drives.” In 2025 IEEE International Electric
Machines & Drives Conference (IEMDC). IEEE, 2025. https://doi.org/10.1109/iemdc60492.2025.11061032.
ieee: 'M. Peña López, M. Schenke, D. Jakobeit, B. Haucke-Korber, and O. Wallscheid,
“Reinforcement Learning Control of Three-Level Converter Permanent Magnet Synchronous
Machine Drives,” 2025, doi: 10.1109/iemdc60492.2025.11061032.'
mla: Peña López, Mario, et al. “Reinforcement Learning Control of Three-Level Converter
Permanent Magnet Synchronous Machine Drives.” 2025 IEEE International Electric
Machines & Drives Conference (IEMDC), IEEE, 2025, doi:10.1109/iemdc60492.2025.11061032.
short: 'M. Peña López, M. Schenke, D. Jakobeit, B. Haucke-Korber, O. Wallscheid,
in: 2025 IEEE International Electric Machines & Drives Conference (IEMDC),
IEEE, 2025.'
date_created: 2025-07-25T12:26:05Z
date_updated: 2025-12-19T12:43:37Z
department:
- _id: '52'
doi: 10.1109/iemdc60492.2025.11061032
language:
- iso: eng
publication: 2025 IEEE International Electric Machines & Drives Conference (IEMDC)
publication_status: published
publisher: IEEE
status: public
title: Reinforcement Learning Control of Three-Level Converter Permanent Magnet Synchronous
Machine Drives
type: conference
user_id: '93461'
year: '2025'
...
---
_id: '63384'
abstract:
- lang: eng
text: "Two fundamental ways to represent a group are as permutations and as matrices.
In this paper, we study linear representations of groups that intertwine with
a permutation representation. Recently, D'Alconzo and Di Scala investigated how
small the matrices in such a linear representation can be. The minimal dimension
of such a representation is the \\emph{linear dimension of the group action} and
this has applications in cryptography and cryptosystems.\r\n\r\nWe develop the
idea of linear dimension from an algebraic point of view by using the theory of
permutation modules. We give structural results about representations of minimal
dimension and investigate the implications of faithfulness, transitivity and primitivity
on the linear dimension. Furthermore, we compute the linear dimension of several
classes of finite primitive permutation groups. We also study wreath products,
allowing us to determine the linear dimension of imprimitive group actions. Finally,
we give the linear dimension of almost simple finite $2$-transitive groups, some
of which may be used for further applications in cryptography. Our results also
open up many new questions about linear representations of group actions."
author:
- first_name: Alice
full_name: Devillers, Alice
last_name: Devillers
- first_name: Michael
full_name: Giudici, Michael
last_name: Giudici
- first_name: Daniel R.
full_name: Hawtin, Daniel R.
last_name: Hawtin
- first_name: Lukas-André Dominik
full_name: Klawuhn, Lukas-André Dominik
id: '91965'
last_name: Klawuhn
orcid: 0009-0009-7736-4885
- first_name: Luke
full_name: Morgan, Luke
last_name: Morgan
citation:
ama: Devillers A, Giudici M, Hawtin DR, Klawuhn L-AD, Morgan L. Linear dimension
of group actions. Published online 2025.
apa: Devillers, A., Giudici, M., Hawtin, D. R., Klawuhn, L.-A. D., & Morgan,
L. (2025). Linear dimension of group actions.
bibtex: '@article{Devillers_Giudici_Hawtin_Klawuhn_Morgan_2025, title={Linear dimension
of group actions}, author={Devillers, Alice and Giudici, Michael and Hawtin, Daniel
R. and Klawuhn, Lukas-André Dominik and Morgan, Luke}, year={2025} }'
chicago: Devillers, Alice, Michael Giudici, Daniel R. Hawtin, Lukas-André Dominik
Klawuhn, and Luke Morgan. “Linear Dimension of Group Actions,” 2025.
ieee: A. Devillers, M. Giudici, D. R. Hawtin, L.-A. D. Klawuhn, and L. Morgan, “Linear
dimension of group actions.” 2025.
mla: Devillers, Alice, et al. Linear Dimension of Group Actions. 2025.
short: A. Devillers, M. Giudici, D.R. Hawtin, L.-A.D. Klawuhn, L. Morgan, (2025).
date_created: 2025-12-19T11:20:46Z
date_updated: 2025-12-19T11:23:41Z
department:
- _id: '100'
external_id:
arxiv:
- '2512.16079'
language:
- iso: eng
status: public
title: Linear dimension of group actions
type: preprint
user_id: '91965'
year: '2025'
...
---
_id: '63394'
abstract:
- lang: eng
text: We study the statistics of the number of real eigenvalues in the elliptic
deformation of the real Ginibre ensemble. As the matrix dimension grows, the law
of large numbers and the central limit theorem for the number of real eigenvalues
are well understood, but the probabilities of rare events remain largely unexplored.
Large deviation type results have been obtained only in extreme cases, when either
a vanishingly small proportion of eigenvalues are real or almost all eigenvalues
are real. Here, in both the strong and weak asymmetry regimes, we derive the probabilities
of rare events in the moderate-to-large deviation regime, thereby providing a
natural connection between the previously known regime of Gaussian fluctuations
and the large deviation regime. Our results are new even for the classical real
Ginibre ensemble.
author:
- first_name: Sung-Soo
full_name: Byun, Sung-Soo
last_name: Byun
- first_name: Jonas
full_name: Jalowy, Jonas
id: '113768'
last_name: Jalowy
orcid: 0000-0001-9624-2685
- first_name: Yong-Woo
full_name: Lee, Yong-Woo
last_name: Lee
- first_name: Grégory
full_name: Schehr, Grégory
last_name: Schehr
citation:
ama: Byun S-S, Jalowy J, Lee Y-W, Schehr G. Moderate-to-large deviation asymptotics
for real eigenvalues of the elliptic Ginibre matrices. arXiv:251109191.
Published online 2025.
apa: Byun, S.-S., Jalowy, J., Lee, Y.-W., & Schehr, G. (2025). Moderate-to-large
deviation asymptotics for real eigenvalues of the elliptic Ginibre matrices. In
arXiv:2511.09191.
bibtex: '@article{Byun_Jalowy_Lee_Schehr_2025, title={Moderate-to-large deviation
asymptotics for real eigenvalues of the elliptic Ginibre matrices}, journal={arXiv:2511.09191},
author={Byun, Sung-Soo and Jalowy, Jonas and Lee, Yong-Woo and Schehr, Grégory},
year={2025} }'
chicago: Byun, Sung-Soo, Jonas Jalowy, Yong-Woo Lee, and Grégory Schehr. “Moderate-to-Large
Deviation Asymptotics for Real Eigenvalues of the Elliptic Ginibre Matrices.”
ArXiv:2511.09191, 2025.
ieee: S.-S. Byun, J. Jalowy, Y.-W. Lee, and G. Schehr, “Moderate-to-large deviation
asymptotics for real eigenvalues of the elliptic Ginibre matrices,” arXiv:2511.09191.
2025.
mla: Byun, Sung-Soo, et al. “Moderate-to-Large Deviation Asymptotics for Real Eigenvalues
of the Elliptic Ginibre Matrices.” ArXiv:2511.09191, 2025.
short: S.-S. Byun, J. Jalowy, Y.-W. Lee, G. Schehr, ArXiv:2511.09191 (2025).
date_created: 2025-12-22T08:37:02Z
date_updated: 2025-12-22T08:37:35Z
department:
- _id: '94'
external_id:
arxiv:
- '2511.09191'
language:
- iso: eng
publication: arXiv:2511.09191
status: public
title: Moderate-to-large deviation asymptotics for real eigenvalues of the elliptic
Ginibre matrices
type: preprint
user_id: '113768'
year: '2025'
...
---
_id: '63393'
abstract:
- lang: eng
text: 'We study the evolution of zeros of high polynomial powers under the heat
flow. For any fixed polynomial $P(z)$, we prove that the empirical zero distribution
of its heat-evolved $n$-th power converges to a distribution on the complex plane
as $n$ tends to infinity. We describe this limit distribution $μ_t$ as a function
of the time parameter $t$ of the heat evolution: For small time, zeros start to
spread out in approximately semicircular distributions, then intricate curves
start to form and merge, until for large time, the zero distribution approaches
a widespread semicircle law through the initial center of mass. The Stieltjes
transform of the limit distribution $μ_t$ satisfies a self-consistent equation
and a Burgers'' equation. The present paper deals with general complex-rooted
polynomials for which, in contrast to the real-rooted case, no free-probabilistic
representation for $μ_t$ is available.'
author:
- first_name: Antonia
full_name: Höfert, Antonia
last_name: Höfert
- first_name: Jonas
full_name: Jalowy, Jonas
id: '113768'
last_name: Jalowy
orcid: 0000-0001-9624-2685
- first_name: Zakhar
full_name: Kabluchko, Zakhar
last_name: Kabluchko
citation:
ama: Höfert A, Jalowy J, Kabluchko Z. Zeros of polynomial powers under the heat
flow. arXiv:251217808. Published online 2025.
apa: Höfert, A., Jalowy, J., & Kabluchko, Z. (2025). Zeros of polynomial powers
under the heat flow. In arXiv:2512.17808.
bibtex: '@article{Höfert_Jalowy_Kabluchko_2025, title={Zeros of polynomial powers
under the heat flow}, journal={arXiv:2512.17808}, author={Höfert, Antonia and
Jalowy, Jonas and Kabluchko, Zakhar}, year={2025} }'
chicago: Höfert, Antonia, Jonas Jalowy, and Zakhar Kabluchko. “Zeros of Polynomial
Powers under the Heat Flow.” ArXiv:2512.17808, 2025.
ieee: A. Höfert, J. Jalowy, and Z. Kabluchko, “Zeros of polynomial powers under
the heat flow,” arXiv:2512.17808. 2025.
mla: Höfert, Antonia, et al. “Zeros of Polynomial Powers under the Heat Flow.” ArXiv:2512.17808,
2025.
short: A. Höfert, J. Jalowy, Z. Kabluchko, ArXiv:2512.17808 (2025).
date_created: 2025-12-22T08:36:24Z
date_updated: 2025-12-22T08:36:46Z
department:
- _id: '94'
external_id:
arxiv:
- '2512.17808'
language:
- iso: eng
publication: arXiv:2512.17808
status: public
title: Zeros of polynomial powers under the heat flow
type: preprint
user_id: '113768'
year: '2025'
...
---
_id: '63403'
abstract:
- lang: eng
text: "Stateful signatures like the NIST standardized signature schemes LMS and
XMSS provide an efficient and mature realization of post-quantum secure signature
schemes. They are recommended for long-term use cases like e.g. firmware signing.
However, stateful signature schemes require to properly manage a so-called state.
In stateful signature schemes like LMS and XMSS, signing keys consist of a set
of keys of a one-time signature scheme and it has to be guaranteed that each one-time
key is used only once. This is done by updating a state in each signature computation,
basically recording which one-time keys have already been used. While this is
straightforward in centralized systems, in distributed systems like secure enclaves
consisting of e.g. multiple hardware security modules (HSMs) with limited communication
keeping a distributed state that at any point in time is consistent among all
parties involved presents a challenge. This challenge is not addressed by the
current standardization processes. \r\nIn this paper we present a security model
for the distributed key management of post-quantum secure stateful signatures
like XMSS and LMS. We also present a simple, efficient, and easy to implement
protocol proven secure in this security model, i.e. the protocol guarantees at
any point in time a consistent state among the parties in a distributed system,
like a distributed security enclave. The security model is defined in the universal
composabilty (UC) framework by Ran Canetti by providing an ideal functionality
for the distributed key management for stateful signatures. Hence our protocol
remains secure even if arbitrarily composed with other instances of the same or
other protocols, a necessity for the security of distributed key management protocols.
Our main application are security enclaves consisting of HSMs, but the model and
the protocol can easily be adapted to other scenarios of distributed key management
of stateful signature schemes."
author:
- first_name: Johannes
full_name: Blömer, Johannes
id: '23'
last_name: Blömer
- first_name: Henrik
full_name: Bröcher, Henrik
id: '41047'
last_name: Bröcher
orcid: 0009-0008-3938-5485
- first_name: Volker
full_name: Krummel, Volker
last_name: Krummel
- first_name: Laurens Alexander
full_name: Porzenheim, Laurens Alexander
id: '47434'
last_name: Porzenheim
citation:
ama: Blömer J, Bröcher H, Krummel V, Porzenheim LA. Secure Distributed State Management
for Stateful Signatures with a Practical and Universally Composable Protocol.
apa: Blömer, J., Bröcher, H., Krummel, V., & Porzenheim, L. A. (n.d.). Secure
Distributed State Management for Stateful Signatures with a Practical and Universally
Composable Protocol.
bibtex: '@article{Blömer_Bröcher_Krummel_Porzenheim, title={Secure Distributed State
Management for Stateful Signatures with a Practical and Universally Composable
Protocol}, author={Blömer, Johannes and Bröcher, Henrik and Krummel, Volker and
Porzenheim, Laurens Alexander} }'
chicago: Blömer, Johannes, Henrik Bröcher, Volker Krummel, and Laurens Alexander
Porzenheim. “Secure Distributed State Management for Stateful Signatures with
a Practical and Universally Composable Protocol,” n.d.
ieee: J. Blömer, H. Bröcher, V. Krummel, and L. A. Porzenheim, “Secure Distributed
State Management for Stateful Signatures with a Practical and Universally Composable
Protocol.” .
mla: Blömer, Johannes, et al. Secure Distributed State Management for Stateful
Signatures with a Practical and Universally Composable Protocol.
short: J. Blömer, H. Bröcher, V. Krummel, L.A. Porzenheim, (n.d.).
date_created: 2025-12-22T21:23:22Z
date_updated: 2025-12-23T11:30:38Z
department:
- _id: '34'
- _id: '64'
keyword:
- distributed state
- hash-based signature
- stateful hash-based signature
- universal composability
- secure enclave
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2025/2278.pdf
oa: '1'
page: '22'
project:
- _id: '191'
name: 'PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform'
publication_status: submitted
status: public
title: Secure Distributed State Management for Stateful Signatures with a Practical
and Universally Composable Protocol
type: preprint
user_id: '41047'
year: '2025'
...
---
_id: '63434'
author:
- first_name: Max
full_name: Hoffmann, Max
last_name: Hoffmann
citation:
ama: 'Hoffmann M. Using scriptwriting as a response format for interface tasks:
Exemplary analyses in the context of symmetry. In: Bosch M, Bolondi G, Carreira
S, Michael G, Camilla S, eds. Proceedings of the Fourteenth Congress of the
European Society for Research in Mathematics Education (CERME14). ; 2025.'
apa: 'Hoffmann, M. (2025). Using scriptwriting as a response format for interface
tasks: Exemplary analyses in the context of symmetry. In M. Bosch, G. Bolondi,
S. Carreira, G. Michael, & S. Camilla (Eds.), Proceedings of the Fourteenth
Congress of the European Society for Research in Mathematics Education (CERME14).'
bibtex: '@inproceedings{Hoffmann_2025, title={Using scriptwriting as a response
format for interface tasks: Exemplary analyses in the context of symmetry}, booktitle={Proceedings
of the Fourteenth Congress of the European Society for Research in Mathematics
Education (CERME14)}, author={Hoffmann, Max}, editor={Bosch, Marianna and Bolondi,
Giorgio and Carreira, Susana and Michael, Gaidoschik and Camilla, Spagnolo}, year={2025}
}'
chicago: 'Hoffmann, Max. “Using Scriptwriting as a Response Format for Interface
Tasks: Exemplary Analyses in the Context of Symmetry.” In Proceedings of the
Fourteenth Congress of the European Society for Research in Mathematics Education
(CERME14), edited by Marianna Bosch, Giorgio Bolondi, Susana Carreira, Gaidoschik
Michael, and Spagnolo Camilla, 2025.'
ieee: 'M. Hoffmann, “Using scriptwriting as a response format for interface tasks:
Exemplary analyses in the context of symmetry,” in Proceedings of the Fourteenth
Congress of the European Society for Research in Mathematics Education (CERME14),
2025.'
mla: 'Hoffmann, Max. “Using Scriptwriting as a Response Format for Interface Tasks:
Exemplary Analyses in the Context of Symmetry.” Proceedings of the Fourteenth
Congress of the European Society for Research in Mathematics Education (CERME14),
edited by Marianna Bosch et al., 2025.'
short: 'M. Hoffmann, in: M. Bosch, G. Bolondi, S. Carreira, G. Michael, S. Camilla
(Eds.), Proceedings of the Fourteenth Congress of the European Society for Research
in Mathematics Education (CERME14), 2025.'
date_created: 2026-01-04T21:26:04Z
date_updated: 2026-01-04T21:29:36Z
department:
- _id: '97'
- _id: '643'
editor:
- first_name: Marianna
full_name: Bosch, Marianna
last_name: Bosch
- first_name: Giorgio
full_name: Bolondi, Giorgio
last_name: Bolondi
- first_name: Susana
full_name: Carreira, Susana
last_name: Carreira
- first_name: Gaidoschik
full_name: Michael, Gaidoschik
last_name: Michael
- first_name: Spagnolo
full_name: Camilla, Spagnolo
last_name: Camilla
keyword:
- hoffmann
- reviewed
- proceedings
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://hal.science/CERME14/hal-05237875v1
oa: '1'
publication: Proceedings of the Fourteenth Congress of the European Society for Research
in Mathematics Education (CERME14)
quality_controlled: '1'
status: public
title: 'Using scriptwriting as a response format for interface tasks: Exemplary analyses
in the context of symmetry'
type: conference
user_id: '32202'
year: '2025'
...
---
_id: '63433'
article_type: original
author:
- first_name: Max
full_name: Hoffmann, Max
id: '32202'
last_name: Hoffmann
orcid: 0000-0002-6964-7123
citation:
ama: Hoffmann M. Digitale Perspektiven auf das Heron-Verfahren. mathematik lehren.
2025;(253):39-44. doi:https://doi.org/10.5555/ml-253-2025_07
apa: Hoffmann, M. (2025). Digitale Perspektiven auf das Heron-Verfahren. mathematik
lehren, 253, 39–44. https://doi.org/10.5555/ml-253-2025_07
bibtex: '@article{Hoffmann_2025, title={Digitale Perspektiven auf das Heron-Verfahren},
DOI={https://doi.org/10.5555/ml-253-2025_07},
number={253}, journal={mathematik lehren}, author={Hoffmann, Max}, year={2025},
pages={39–44} }'
chicago: 'Hoffmann, Max. “Digitale Perspektiven auf das Heron-Verfahren.” mathematik
lehren, no. 253 (2025): 39–44. https://doi.org/10.5555/ml-253-2025_07.'
ieee: 'M. Hoffmann, “Digitale Perspektiven auf das Heron-Verfahren,” mathematik
lehren, no. 253, pp. 39–44, 2025, doi: https://doi.org/10.5555/ml-253-2025_07.'
mla: Hoffmann, Max. “Digitale Perspektiven auf das Heron-Verfahren.” mathematik
lehren, no. 253, 2025, pp. 39–44, doi:https://doi.org/10.5555/ml-253-2025_07.
short: M. Hoffmann, mathematik lehren (2025) 39–44.
date_created: 2026-01-04T17:37:54Z
date_updated: 2026-01-04T17:38:00Z
department:
- _id: '97'
- _id: '643'
doi: https://doi.org/10.5555/ml-253-2025_07
issue: '253'
language:
- iso: ger
page: 39-44
popular_science: '1'
publication: mathematik lehren
publication_status: published
status: public
title: Digitale Perspektiven auf das Heron-Verfahren
type: journal_article
user_id: '32202'
year: '2025'
...
---
_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: '62299'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Claus
full_name: Scheidemann, Claus
id: '38259'
last_name: Scheidemann
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Friesen O, Scheidemann C, Claes L, Hemsel T, Henning B. Sensitivity Analysis
and Material Parameter Estimation of a Pre-Stressed Langevin Transducer. In: 2025
International Congress on Ultrasonics. AMA Service GmbH; 2025:138–141. doi:10.5162/ultrasonic2025/a18-a4'
apa: Friesen, O., Scheidemann, C., Claes, L., Hemsel, T., & Henning, B. (2025).
Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin
Transducer. 2025 International Congress on Ultrasonics, 138–141. https://doi.org/10.5162/ultrasonic2025/a18-a4
bibtex: '@inproceedings{Friesen_Scheidemann_Claes_Hemsel_Henning_2025, place={Paderborn},
title={Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed
Langevin Transducer}, DOI={10.5162/ultrasonic2025/a18-a4},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Friesen, Olga and Scheidemann, Claus and Claes, Leander and Hemsel,
Tobias and Henning, Bernd}, year={2025}, pages={138–141} }'
chicago: 'Friesen, Olga, Claus Scheidemann, Leander Claes, Tobias Hemsel, and Bernd
Henning. “Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed
Langevin Transducer.” In 2025 International Congress on Ultrasonics, 138–141.
Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a4.'
ieee: 'O. Friesen, C. Scheidemann, L. Claes, T. Hemsel, and B. Henning, “Sensitivity
Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer,”
in 2025 International Congress on Ultrasonics, 2025, pp. 138–141, doi:
10.5162/ultrasonic2025/a18-a4.'
mla: Friesen, Olga, et al. “Sensitivity Analysis and Material Parameter Estimation
of a Pre-Stressed Langevin Transducer.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 138–141, doi:10.5162/ultrasonic2025/a18-a4.
short: 'O. Friesen, C. Scheidemann, L. Claes, T. Hemsel, B. Henning, in: 2025 International
Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 138–141.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-05T08:00:48Z
department:
- _id: '49'
- _id: '151'
doi: 10.5162/ultrasonic2025/a18-a4
language:
- iso: eng
page: 138–141
place: Paderborn
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: 2025 International Congress on Ultrasonics
publisher: AMA Service GmbH
status: public
title: Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin
Transducer
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '62298'
author:
- first_name: Raphael
full_name: Kuess, Raphael
last_name: Kuess
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
- first_name: Andrea
full_name: Walther, Andrea
last_name: Walther
citation:
ama: 'Kuess R, Friesen O, Henning B, Walther A. Identification of temperature-dependent
material parameter functions in piezoelectricity. In: 2025 International Congress
on Ultrasonics. AMA Service GmbH; 2025:134–137. doi:10.5162/ultrasonic2025/a18-a3'
apa: Kuess, R., Friesen, O., Henning, B., & Walther, A. (2025). Identification
of temperature-dependent material parameter functions in piezoelectricity. 2025
International Congress on Ultrasonics, 134–137. https://doi.org/10.5162/ultrasonic2025/a18-a3
bibtex: '@inproceedings{Kuess_Friesen_Henning_Walther_2025, place={Germany}, title={Identification
of temperature-dependent material parameter functions in piezoelectricity}, DOI={10.5162/ultrasonic2025/a18-a3},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Kuess, Raphael and Friesen, Olga and Henning, Bernd and Walther,
Andrea}, year={2025}, pages={134–137} }'
chicago: 'Kuess, Raphael, Olga Friesen, Bernd Henning, and Andrea Walther. “Identification
of Temperature-Dependent Material Parameter Functions in Piezoelectricity.” In
2025 International Congress on Ultrasonics, 134–137. Germany: AMA Service
GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a3.'
ieee: 'R. Kuess, O. Friesen, B. Henning, and A. Walther, “Identification of temperature-dependent
material parameter functions in piezoelectricity,” in 2025 International Congress
on Ultrasonics, 2025, pp. 134–137, doi: 10.5162/ultrasonic2025/a18-a3.'
mla: Kuess, Raphael, et al. “Identification of Temperature-Dependent Material Parameter
Functions in Piezoelectricity.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 134–137, doi:10.5162/ultrasonic2025/a18-a3.
short: 'R. Kuess, O. Friesen, B. Henning, A. Walther, in: 2025 International Congress
on Ultrasonics, AMA Service GmbH, Germany, 2025, pp. 134–137.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-05T08:01:47Z
department:
- _id: '49'
doi: 10.5162/ultrasonic2025/a18-a3
language:
- iso: eng
page: 134–137
place: Germany
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: 2025 International Congress on Ultrasonics
publisher: AMA Service GmbH
status: public
title: Identification of temperature-dependent material parameter functions in piezoelectricity
type: conference
user_id: '11829'
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'
...