---
_id: '65518'
abstract:
- lang: eng
text: "Abstract\r\n Optically
assisted digital-to-analog converters (DACs) using Nyquist pulse sequences (NPSs)
are presented and investigated. Therefore, NPSs are mathematically described and
analyzed. Based on this, the operating principle of a precise optical Nyquist
pulse synthesizer digital-to-analog converter (PONyDAC) is described. Possible
architectures of PONyDAC are derived and compared in terms of performance and
practicability. Moreover, the limits of PONyDAC systems and their superiority
over classical electronic DACs are discussed. Furthermore, discrete building-block
based implementations and monolithic implementations in electronic-photonic integrated
circuits (EPICs) are presented. To enable a practicable monolithic integration,
a shrinkage of the Mach-Zehnder modulators (MZMs) has been performed by applying
forward-biased phase shifters (FB-PSs). These FB-PSs are analyzed and modeled
to allow the precise and reliable design of PONyDAC systems with multiple MZMs.
Finally, data conversion and data transmission experiments are carried out to
demonstrate the systems functionality, quantify its performance, and prove their
superiority over purely electronic DACs."
author:
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
- first_name: Tobias
full_name: Schwabe, Tobias
id: '39217'
last_name: Schwabe
- first_name: Karanveer
full_name: Singh, Karanveer
last_name: Singh
- first_name: Christian
full_name: Kress, Christian
id: '13256'
last_name: Kress
orcid: 0000-0002-4403-2237
- first_name: Thomas
full_name: Schneider, Thomas
last_name: Schneider
citation:
ama: 'Scheytt JC, Schwabe T, Singh K, Kress C, Schneider T. Precise Optical Nyquist
Pulse Synthesizer Digital-to-Analog Converter. In: Scheytt JC, Kress C, Berroth
M, Pachnicke S, Witzens J, eds. Electronic-Photonic Integrated Systems for
Ultrafast Signal Processing. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-08340-1_4'
apa: Scheytt, J. C., Schwabe, T., Singh, K., Kress, C., & Schneider, T. (2026).
Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter. In J. C.
Scheytt, C. Kress, M. Berroth, S. Pachnicke, & J. Witzens (Eds.), Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland.
https://doi.org/10.1007/978-3-032-08340-1_4
bibtex: '@inbook{Scheytt_Schwabe_Singh_Kress_Schneider_2026, place={Cham}, title={Precise
Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter}, DOI={10.1007/978-3-032-08340-1_4},
booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing},
publisher={Springer Nature Switzerland}, author={Scheytt, J. Christoph and Schwabe,
Tobias and Singh, Karanveer and Kress, Christian and Schneider, Thomas}, editor={Scheytt,
J. Christoph and Kress, Christian and Berroth, Manfred and Pachnicke, Stephan
and Witzens, Jeremy}, year={2026} }'
chicago: 'Scheytt, J. Christoph, Tobias Schwabe, Karanveer Singh, Christian Kress,
and Thomas Schneider. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog
Converter.” In Electronic-Photonic Integrated Systems for Ultrafast Signal
Processing, edited by J. Christoph Scheytt, Christian Kress, Manfred Berroth,
Stephan Pachnicke, and Jeremy Witzens. Cham: Springer Nature Switzerland, 2026.
https://doi.org/10.1007/978-3-032-08340-1_4.'
ieee: 'J. C. Scheytt, T. Schwabe, K. Singh, C. Kress, and T. Schneider, “Precise
Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter,” in Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing, J. C. Scheytt, C. Kress,
M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham: Springer Nature Switzerland,
2026.'
mla: Scheytt, J. Christoph, et al. “Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog
Converter.” Electronic-Photonic Integrated Systems for Ultrafast Signal Processing,
edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1_4.
short: 'J.C. Scheytt, T. Schwabe, K. Singh, C. Kress, T. Schneider, in: J.C. Scheytt,
C. Kress, M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated
Systems for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-04-29T14:14:21Z
date_updated: 2026-04-29T14:28:40Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1_4
editor:
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
last_name: Scheytt
- first_name: Christian
full_name: Kress, Christian
last_name: Kress
- first_name: Manfred
full_name: Berroth, Manfred
last_name: Berroth
- first_name: Stephan
full_name: Pachnicke, Stephan
last_name: Pachnicke
- first_name: Jeremy
full_name: Witzens, Jeremy
last_name: Witzens
language:
- iso: eng
place: Cham
publication: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
publication_identifier:
isbn:
- '9783032083395'
- '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Precise Optical Nyquist Pulse Synthesizer Digital-to-Analog Converter
type: book_chapter
user_id: '13256'
year: '2026'
...
---
_id: '65256'
citation:
ama: Scheytt JC, Kress C, Berroth M, Pachnicke S, Witzens J, eds. Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland;
2026. doi:10.1007/978-3-032-08340-1
apa: Scheytt, J. C., Kress, C., Berroth, M., Pachnicke, S., & Witzens, J. (Eds.).
(2026). Electronic-Photonic Integrated Systems for Ultrafast Signal Processing.
Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-08340-1
bibtex: '@book{Scheytt_Kress_Berroth_Pachnicke_Witzens_2026, place={Cham}, title={Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing}, DOI={10.1007/978-3-032-08340-1},
publisher={Springer Nature Switzerland}, year={2026} }'
chicago: 'Scheytt, J. Christoph, Christian Kress, Manfred Berroth, Stephan Pachnicke,
and Jeremy Witzens, eds. Electronic-Photonic Integrated Systems for Ultrafast
Signal Processing. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-08340-1.'
ieee: 'J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds.,
Electronic-Photonic Integrated Systems for Ultrafast Signal Processing.
Cham: Springer Nature Switzerland, 2026.'
mla: Scheytt, J. Christoph, et al., editors. Electronic-Photonic Integrated Systems
for Ultrafast Signal Processing. Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1.
short: J.C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, J. Witzens, eds., Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing, Springer Nature Switzerland,
Cham, 2026.
date_created: 2026-03-31T09:02:20Z
date_updated: 2026-04-30T06:10:44Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1
editor:
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
- first_name: Christian
full_name: Kress, Christian
id: '13256'
last_name: Kress
orcid: 0000-0002-4403-2237
- first_name: Manfred
full_name: Berroth, Manfred
last_name: Berroth
- first_name: Stephan
full_name: Pachnicke, Stephan
last_name: Pachnicke
- first_name: Jeremy
full_name: Witzens, Jeremy
last_name: Witzens
language:
- iso: eng
place: Cham
publication_identifier:
isbn:
- '9783032083395'
- '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
type: book_editor
user_id: '13256'
year: '2026'
...
---
_id: '65554'
abstract:
- lang: eng
text: "Abstract\r\n \r\n An
algorithm for cutting solid objects in a topology‐controlled manner is presented.
Concretely, given a loop on the object boundary, a disk‐topology cut surface bounded
by the loop is constructed in the interior. In contrast to various previous approaches,
both disk topology and conformance to the prescribed loop are ensured by construction,
while supporting not only contractible but also incontractible loops on the boundaries
of manifold objects of higher genus and arbitrary non‐trivial topology. We describe
an implementation of this algorithm in the discrete setting, with triangle mesh
cut surfaces embedded in tetrahedral mesh objects. Making use of this novel cutting
algorithm, we describe a method for the reliable construction of bijective volumetric
maps between solid objects, demonstrating the algorithm's utility. This mapping
method overcomes restrictions of the state of the art to topological balls, extending
coverage to objects of arbitrary genus, specifically so‐called\r\n 1\r\n
\ ‐handlebodies.\r\n "
article_number: e70379
author:
- first_name: Steffen
full_name: Hinderink, Steffen
id: '116615'
last_name: Hinderink
- first_name: Marcel
full_name: Campen, Marcel
id: '114904'
last_name: Campen
orcid: 0000-0003-2340-3462
citation:
ama: 'Hinderink S, Campen M. DiskScissors: Cutting Arbitrary‐Topology Solids for
Bijective Mapping. Computer Graphics Forum. Published online 2026. doi:10.1111/cgf.70379'
apa: 'Hinderink, S., & Campen, M. (2026). DiskScissors: Cutting Arbitrary‐Topology
Solids for Bijective Mapping. Computer Graphics Forum, Article e70379.
https://doi.org/10.1111/cgf.70379'
bibtex: '@article{Hinderink_Campen_2026, title={DiskScissors: Cutting Arbitrary‐Topology
Solids for Bijective Mapping}, DOI={10.1111/cgf.70379},
number={e70379}, journal={Computer Graphics Forum}, publisher={Wiley}, author={Hinderink,
Steffen and Campen, Marcel}, year={2026} }'
chicago: 'Hinderink, Steffen, and Marcel Campen. “DiskScissors: Cutting Arbitrary‐Topology
Solids for Bijective Mapping.” Computer Graphics Forum, 2026. https://doi.org/10.1111/cgf.70379.'
ieee: 'S. Hinderink and M. Campen, “DiskScissors: Cutting Arbitrary‐Topology Solids
for Bijective Mapping,” Computer Graphics Forum, Art. no. e70379, 2026,
doi: 10.1111/cgf.70379.'
mla: 'Hinderink, Steffen, and Marcel Campen. “DiskScissors: Cutting Arbitrary‐Topology
Solids for Bijective Mapping.” Computer Graphics Forum, e70379, Wiley,
2026, doi:10.1111/cgf.70379.'
short: S. Hinderink, M. Campen, Computer Graphics Forum (2026).
date_created: 2026-05-05T08:15:52Z
date_updated: 2026-05-05T08:17:55Z
department:
- _id: '969'
doi: 10.1111/cgf.70379
language:
- iso: eng
publication: Computer Graphics Forum
publication_identifier:
issn:
- 0167-7055
- 1467-8659
publication_status: published
publisher: Wiley
status: public
title: 'DiskScissors: Cutting Arbitrary‐Topology Solids for Bijective Mapping'
type: journal_article
user_id: '117512'
year: '2026'
...
---
_id: '65567'
abstract:
- lang: eng
text: "We introduce the notion of contrastive ABox explanations to answer
questions of the type “Why is a an instance of C, but b is not?”. While there
are various approaches for explaining positive entailments (why is C(a) entailed
by the knowledge base) as well as missing entailments (why is C(b) not entailed)
in isolation, contrastive explanations consider both at the same time, which allows
them to focus on the relevant commonalities and differences between a and b. We
develop an appropriate notion of contrastive explanations for the special case
of ABox reasoning with description logic ontologies, and analyze the computational
complexity for different variants under different optimality criteria, considering
lightweight as well as more expressive description logics. We\r\nimplemented a
first method for computing one variant of contrastive explanations, and evaluated
it on generated problems for realistic knowledge bases."
author:
- first_name: Patrick
full_name: Koopmann, Patrick
last_name: Koopmann
- first_name: Yasir
full_name: Mahmood, Yasir
id: '99353'
last_name: Mahmood
- first_name: Axel-Cyrille
full_name: Ngonga Ngomo, Axel-Cyrille
id: '65716'
last_name: Ngonga Ngomo
- first_name: Balram
full_name: Tiwari, Balram
last_name: Tiwari
citation:
ama: 'Koopmann P, Mahmood Y, Ngonga Ngomo A-C, Tiwari B. Can You Tell the Difference?
Contrastive Explanations for ABox Entailments. In: Proceedings of the AAAI
Conference on Artificial Intelligence. Vol 40. Association for the Advancement
of Artificial Intelligence (AAAI); 2026:19189-19197. doi:10.1609/aaai.v40i23.38993'
apa: Koopmann, P., Mahmood, Y., Ngonga Ngomo, A.-C., & Tiwari, B. (2026). Can
You Tell the Difference? Contrastive Explanations for ABox Entailments. Proceedings
of the AAAI Conference on Artificial Intelligence, 40(23), 19189–19197.
https://doi.org/10.1609/aaai.v40i23.38993
bibtex: '@inproceedings{Koopmann_Mahmood_Ngonga Ngomo_Tiwari_2026, title={Can You
Tell the Difference? Contrastive Explanations for ABox Entailments}, volume={40},
DOI={10.1609/aaai.v40i23.38993},
number={23}, booktitle={Proceedings of the AAAI Conference on Artificial Intelligence},
publisher={Association for the Advancement of Artificial Intelligence (AAAI)},
author={Koopmann, Patrick and Mahmood, Yasir and Ngonga Ngomo, Axel-Cyrille and
Tiwari, Balram}, year={2026}, pages={19189–19197} }'
chicago: Koopmann, Patrick, Yasir Mahmood, Axel-Cyrille Ngonga Ngomo, and Balram
Tiwari. “Can You Tell the Difference? Contrastive Explanations for ABox Entailments.”
In Proceedings of the AAAI Conference on Artificial Intelligence, 40:19189–97.
Association for the Advancement of Artificial Intelligence (AAAI), 2026. https://doi.org/10.1609/aaai.v40i23.38993.
ieee: 'P. Koopmann, Y. Mahmood, A.-C. Ngonga Ngomo, and B. Tiwari, “Can You Tell
the Difference? Contrastive Explanations for ABox Entailments,” in Proceedings
of the AAAI Conference on Artificial Intelligence, 2026, vol. 40, no. 23,
pp. 19189–19197, doi: 10.1609/aaai.v40i23.38993.'
mla: Koopmann, Patrick, et al. “Can You Tell the Difference? Contrastive Explanations
for ABox Entailments.” Proceedings of the AAAI Conference on Artificial Intelligence,
vol. 40, no. 23, Association for the Advancement of Artificial Intelligence (AAAI),
2026, pp. 19189–97, doi:10.1609/aaai.v40i23.38993.
short: 'P. Koopmann, Y. Mahmood, A.-C. Ngonga Ngomo, B. Tiwari, in: Proceedings
of the AAAI Conference on Artificial Intelligence, Association for the Advancement
of Artificial Intelligence (AAAI), 2026, pp. 19189–19197.'
date_created: 2026-05-05T15:15:49Z
date_updated: 2026-05-05T15:22:12Z
department:
- _id: '574'
doi: 10.1609/aaai.v40i23.38993
intvolume: ' 40'
issue: '23'
language:
- iso: eng
page: 19189-19197
project:
- _id: '117'
name: TRR 318 - Project Area C
publication: Proceedings of the AAAI Conference on Artificial Intelligence
publication_identifier:
issn:
- 2374-3468
- 2159-5399
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence (AAAI)
status: public
title: Can You Tell the Difference? Contrastive Explanations for ABox Entailments
type: conference
user_id: '99353'
volume: 40
year: '2026'
...
---
_id: '61759'
abstract:
- lang: eng
text: 'Intersection distribution and non-hitting index are concepts introduced recently
by Li and Pott as a new way to view the behaviour of a collection of finite field
polynomials. With both an algebraic interpretation via the intersection of a polynomial
with a set of lines, and a geometric interpretation via a (q+1)-set possessing
an internal nucleus, the concepts have proved their usefulness as a new way to
view various long-standing problems, and have applications in areas such as Kakeya
sets. In this paper, by exploiting connections with diverse areas including the
theory of algebraic curves, cyclotomy and the enumeration of irreducible polynomials,
we establish new results and resolve various Open Problems of Li and Pott. We
prove geometric results which shed new light on the relationship between intersection
distribution and projective equivalence of polynomials, and algebraic results
which describe and characterise the degree of Sf - the index of the largest non-zero
entry in the intersection distribution of f. We provide new insights into the
non-hitting spectrum, and show the limitations of the non-hitting index as a tool
for characterisation. Finally, the benefits provided by the connections to other
areas are evidenced in two short new proofs of the cubic case. '
article_number: '102828'
article_type: original
author:
- first_name: Lukas-André Dominik
full_name: Klawuhn, Lukas-André Dominik
id: '91965'
last_name: Klawuhn
orcid: 0009-0009-7736-4885
- first_name: Sophie
full_name: Huczynska, Sophie
last_name: Huczynska
- first_name: Maura
full_name: Paterson, Maura
last_name: Paterson
citation:
ama: 'Klawuhn L-AD, Huczynska S, Paterson M. The Intersection Distribution: New
Results and Perspectives. Finite Fields and Their Applications. 2026;114.
doi:10.1016/j.ffa.2026.102828'
apa: 'Klawuhn, L.-A. D., Huczynska, S., & Paterson, M. (2026). The Intersection
Distribution: New Results and Perspectives. Finite Fields and Their Applications,
114, Article 102828. https://doi.org/10.1016/j.ffa.2026.102828'
bibtex: '@article{Klawuhn_Huczynska_Paterson_2026, title={The Intersection Distribution:
New Results and Perspectives}, volume={114}, DOI={10.1016/j.ffa.2026.102828},
number={102828}, journal={Finite Fields and Their Applications}, publisher={Elsevier},
author={Klawuhn, Lukas-André Dominik and Huczynska, Sophie and Paterson, Maura},
year={2026} }'
chicago: 'Klawuhn, Lukas-André Dominik, Sophie Huczynska, and Maura Paterson. “The
Intersection Distribution: New Results and Perspectives.” Finite Fields and
Their Applications 114 (2026). https://doi.org/10.1016/j.ffa.2026.102828.'
ieee: 'L.-A. D. Klawuhn, S. Huczynska, and M. Paterson, “The Intersection Distribution:
New Results and Perspectives,” Finite Fields and Their Applications, vol.
114, Art. no. 102828, 2026, doi: 10.1016/j.ffa.2026.102828.'
mla: 'Klawuhn, Lukas-André Dominik, et al. “The Intersection Distribution: New Results
and Perspectives.” Finite Fields and Their Applications, vol. 114, 102828,
Elsevier, 2026, doi:10.1016/j.ffa.2026.102828.'
short: L.-A.D. Klawuhn, S. Huczynska, M. Paterson, Finite Fields and Their Applications
114 (2026).
date_created: 2025-10-08T14:52:20Z
date_updated: 2026-05-06T15:08:06Z
department:
- _id: '100'
doi: 10.1016/j.ffa.2026.102828
intvolume: ' 114'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S1071579726000390
oa: '1'
publication: Finite Fields and Their Applications
publisher: Elsevier
status: public
title: 'The Intersection Distribution: New Results and Perspectives'
type: journal_article
user_id: '91965'
volume: 114
year: '2026'
...
---
_id: '65586'
author:
- first_name: Henning
full_name: Zeipert, Henning
id: '32580'
last_name: Zeipert
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Zeipert H, Claes L, Hölscher J, Wippermann M, Henning B. An Approach for the
Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation
Using Guided Acoustic Waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte
Der Akustik - DAGA 2026. ; 2026:1566–1569. doi:10.71568/DAGA2026.043'
apa: Zeipert, H., Claes, L., Hölscher, J., Wippermann, M., & Henning, B. (2026).
An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for
the Material Characterisation Using Guided Acoustic Waves. In Deutsche Gesellschaft
für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2026 (pp. 1566–1569).
https://doi.org/10.71568/DAGA2026.043
bibtex: '@inproceedings{Zeipert_Claes_Hölscher_Wippermann_Henning_2026, place={Dresden},
title={An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems
for the Material Characterisation Using Guided Acoustic Waves}, DOI={10.71568/DAGA2026.043},
booktitle={Fortschritte der Akustik - DAGA 2026}, author={Zeipert, Henning and
Claes, Leander and Hölscher, Jonas and Wippermann, Mareen and Henning, Bernd},
editor={Deutsche Gesellschaft für Akustik e.V.}, year={2026}, pages={1566–1569}
}'
chicago: Zeipert, Henning, Leander Claes, Jonas Hölscher, Mareen Wippermann, and
Bernd Henning. “An Approach for the Efficient Solution of Eigenvalue-Based Inverse
Problems for the Material Characterisation Using Guided Acoustic Waves.” In Fortschritte
Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V.,
1566–1569. Dresden, 2026. https://doi.org/10.71568/DAGA2026.043.
ieee: 'H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, and B. Henning, “An Approach
for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material
Characterisation Using Guided Acoustic Waves,” in Fortschritte der Akustik
- DAGA 2026, 2026, pp. 1566–1569, doi: 10.71568/DAGA2026.043.'
mla: Zeipert, Henning, et al. “An Approach for the Efficient Solution of Eigenvalue-Based
Inverse Problems for the Material Characterisation Using Guided Acoustic Waves.”
Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für
Akustik e.V., 2026, pp. 1566–1569, doi:10.71568/DAGA2026.043.
short: 'H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, B. Henning, in: Deutsche
Gesellschaft für Akustik e.V. (Ed.), Fortschritte Der Akustik - DAGA 2026, Dresden,
2026, pp. 1566–1569.'
corporate_editor:
- Deutsche Gesellschaft für Akustik e.V.
date_created: 2026-05-08T12:29:43Z
date_updated: 2026-05-08T12:32:54Z
department:
- _id: '49'
doi: 10.71568/DAGA2026.043
language:
- iso: eng
page: 1566–1569
place: Dresden
project:
- _id: '105'
name: Vermiedene Kreuzungen von Lamb-Wellenmoden in mehrlagigen Strukturen
publication: Fortschritte der Akustik - DAGA 2026
status: public
title: An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems
for the Material Characterisation Using Guided Acoustic Waves
type: conference
user_id: '11829'
year: '2026'
...
---
_id: '65587'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: 'Claes L. Simultaneous measurement of bulk and shear viscosity using guided
acoustic waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte
Der Akustik - DAGA 2026. ; 2026:1089–1092. doi:10.71568/DAGA2026.006'
apa: Claes, L. (2026). Simultaneous measurement of bulk and shear viscosity using
guided acoustic waves. In Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte
der Akustik - DAGA 2026 (pp. 1089–1092). https://doi.org/10.71568/DAGA2026.006
bibtex: '@inproceedings{Claes_2026, place={Dresden}, title={Simultaneous measurement
of bulk and shear viscosity using guided acoustic waves}, DOI={10.71568/DAGA2026.006},
booktitle={Fortschritte der Akustik - DAGA 2026}, author={Claes, Leander}, editor={Deutsche
Gesellschaft für Akustik e.V.}, year={2026}, pages={1089–1092} }'
chicago: Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using
Guided Acoustic Waves.” In Fortschritte Der Akustik - DAGA 2026, edited
by Deutsche Gesellschaft für Akustik e.V., 1089–1092. Dresden, 2026. https://doi.org/10.71568/DAGA2026.006.
ieee: 'L. Claes, “Simultaneous measurement of bulk and shear viscosity using guided
acoustic waves,” in Fortschritte der Akustik - DAGA 2026, 2026, pp. 1089–1092,
doi: 10.71568/DAGA2026.006.'
mla: Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using
Guided Acoustic Waves.” Fortschritte Der Akustik - DAGA 2026, edited by
Deutsche Gesellschaft für Akustik e.V., 2026, pp. 1089–1092, doi:10.71568/DAGA2026.006.
short: 'L. Claes, in: Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte
Der Akustik - DAGA 2026, Dresden, 2026, pp. 1089–1092.'
corporate_editor:
- Deutsche Gesellschaft für Akustik e.V.
date_created: 2026-05-08T12:30:37Z
date_updated: 2026-05-08T12:33:01Z
department:
- _id: '49'
doi: 10.71568/DAGA2026.006
language:
- iso: eng
page: 1089–1092
place: Dresden
publication: Fortschritte der Akustik - DAGA 2026
status: public
title: Simultaneous measurement of bulk and shear viscosity using guided acoustic
waves
type: conference
user_id: '11829'
year: '2026'
...
---
_id: '65521'
abstract:
- lang: eng
text: We present recent progress made towards ultra-broadband photonically assisted
analog-to-digital converters, that leverage both the low jitter of best-of-class
mode-locked lasers as well as the capability of optics to break down broadband
signals into multiple lower speed tributaries that can be better handled by electronics.
We review in particular our work on both time- and frequency-domain approaches
and give an outlook on how these architectures can be extended to include further
signal processing tasks such as equalization. Optically triggered track-and-hold
amplifiers are reported with an equivalent jitter below 80 fs rms in a signal
frequency range from 20 GHz to 70 GHz. Frequency-domain architectures implementing
optical arbitrary waveform measurement up to signal bandwidths of 610 GHz are
also shown. Finally, an architecture allowing the deserialization and equalization
of PAM4 signals is introduced and modeled for operation in 400 Gb/s links.
author:
- first_name: Jeremy
full_name: Witzens, Jeremy
last_name: Witzens
- first_name: Daniel
full_name: Drayss, Daniel
last_name: Drayss
- first_name: Dengyang
full_name: Fang, Dengyang
last_name: Fang
- first_name: Alvaro
full_name: Moscoso Mártir, Alvaro
last_name: Moscoso Mártir
- first_name: Juliana
full_name: Müller, Juliana
last_name: Müller
- first_name: Maxim
full_name: Weizel, Maxim
id: '44271'
last_name: Weizel
orcid: 0000-0003-2699-9839
- first_name: Andrea
full_name: Zazzi, Andrea
last_name: Zazzi
- first_name: Wolfgang
full_name: Freude, Wolfgang
last_name: Freude
- first_name: Christian
full_name: Koos, Christian
last_name: Koos
- first_name: Sebastian
full_name: Randel, Sebastian
last_name: Randel
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
citation:
ama: 'Witzens J, Drayss D, Fang D, et al. Ultra-Broadband Photonically Assisted
Analog-to-Digital-Converters. In: Scheytt JC, Kress C, Berroth M, Pachnicke S,
Witzens J, eds. Electronic-Photonic Integrated Systems for Ultrafast Signal
Processing. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-08340-1_3'
apa: Witzens, J., Drayss, D., Fang, D., Moscoso Mártir, A., Müller, J., Weizel,
M., Zazzi, A., Freude, W., Koos, C., Randel, S., & Scheytt, J. C. (2026).
Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters. In J. C. Scheytt,
C. Kress, M. Berroth, S. Pachnicke, & J. Witzens (Eds.), Electronic-Photonic
Integrated Systems for Ultrafast Signal Processing. Springer Nature Switzerland.
https://doi.org/10.1007/978-3-032-08340-1_3
bibtex: '@inbook{Witzens_Drayss_Fang_Moscoso Mártir_Müller_Weizel_Zazzi_Freude_Koos_Randel_et
al._2026, place={Cham}, title={Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters},
DOI={10.1007/978-3-032-08340-1_3},
booktitle={Electronic-Photonic Integrated Systems for Ultrafast Signal Processing},
publisher={Springer Nature Switzerland}, author={Witzens, Jeremy and Drayss, Daniel
and Fang, Dengyang and Moscoso Mártir, Alvaro and Müller, Juliana and Weizel,
Maxim and Zazzi, Andrea and Freude, Wolfgang and Koos, Christian and Randel, Sebastian
and et al.}, editor={Scheytt, J. Christoph and Kress, Christian and Berroth, Manfred
and Pachnicke, Stephan and Witzens, Jeremy}, year={2026} }'
chicago: 'Witzens, Jeremy, Daniel Drayss, Dengyang Fang, Alvaro Moscoso Mártir,
Juliana Müller, Maxim Weizel, Andrea Zazzi, et al. “Ultra-Broadband Photonically
Assisted Analog-to-Digital-Converters.” In Electronic-Photonic Integrated Systems
for Ultrafast Signal Processing, edited by J. Christoph Scheytt, Christian
Kress, Manfred Berroth, Stephan Pachnicke, and Jeremy Witzens. Cham: Springer
Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-08340-1_3.'
ieee: 'J. Witzens et al., “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters,”
in Electronic-Photonic Integrated Systems for Ultrafast Signal Processing,
J. C. Scheytt, C. Kress, M. Berroth, S. Pachnicke, and J. Witzens, Eds. Cham:
Springer Nature Switzerland, 2026.'
mla: Witzens, Jeremy, et al. “Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters.”
Electronic-Photonic Integrated Systems for Ultrafast Signal Processing,
edited by J. Christoph Scheytt et al., Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-08340-1_3.
short: 'J. Witzens, D. Drayss, D. Fang, A. Moscoso Mártir, J. Müller, M. Weizel,
A. Zazzi, W. Freude, C. Koos, S. Randel, J.C. Scheytt, in: J.C. Scheytt, C. Kress,
M. Berroth, S. Pachnicke, J. Witzens (Eds.), Electronic-Photonic Integrated Systems
for Ultrafast Signal Processing, Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-04-30T06:07:38Z
date_updated: 2026-05-11T07:56:04Z
department:
- _id: '58'
- _id: '623'
doi: 10.1007/978-3-032-08340-1_3
editor:
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
last_name: Scheytt
- first_name: Christian
full_name: Kress, Christian
last_name: Kress
- first_name: Manfred
full_name: Berroth, Manfred
last_name: Berroth
- first_name: Stephan
full_name: Pachnicke, Stephan
last_name: Pachnicke
- first_name: Jeremy
full_name: Witzens, Jeremy
last_name: Witzens
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/978-3-032-08340-1.pdf
oa: '1'
place: Cham
project:
- _id: '303'
name: 'SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler
(PACE) - Phase 2'
publication: Electronic-Photonic Integrated Systems for Ultrafast Signal Processing
publication_identifier:
isbn:
- '9783032083395'
- '9783032083401'
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Ultra-Broadband Photonically Assisted Analog-to-Digital-Converters
type: book_chapter
user_id: '44271'
year: '2026'
...
---
_id: '65600'
abstract:
- lang: eng
text: Integrated photonic-assisted signal processing has multiple applications such
as signal amplification, multiplexing, and high-Q filtering in optical communication
systems, optical sensing systems, and also microwave photonics. We will review
recent works on integrated photonic-assisted signal processing for sinc-shaped
Nyquist pulse generation, high-bandwidth Nyquist signal detection with low bandwidth
devices, arbitrary waveform generation and measurement, and on-chip photonic frequency
decoding. However, in such photonic integrated circuits (PICs), the photonic components
are placed very close to each other on the chip, resulting in thermal crosstalk
which degrades the system performance. Air-filled oxide and deep trench designs
have proven to be very effective in mitigating the thermal crosstalk for various
frequently deployed photonic devices like Mach-Zehnder modulators (MZMs), ring
resonators, optical switches, and photodetectors designed on a standard silicon-on-insulator
(SOI) platform. In this chapter, we will additionally review the basics of optical
signal processing and some results for such trench-enhanced thermal crosstalk
resilient circuits.
author:
- first_name: Souvaraj
full_name: De, Souvaraj
last_name: De
- first_name: Younus
full_name: Mandalawi, Younus
last_name: Mandalawi
- first_name: Ranjan
full_name: Das, Ranjan
last_name: Das
- first_name: Maxim
full_name: Weizel, Maxim
id: '44271'
last_name: Weizel
orcid: 0000-0003-2699-9839
citation:
ama: 'De S, Mandalawi Y, Das R, Weizel M. Integrated Photonic-Assisted Signal Processing
and Thermal Crosstalk. In: Metrology for THz Communications. Springer Nature
Switzerland; 2026. doi:10.1007/978-3-032-01986-8_20'
apa: De, S., Mandalawi, Y., Das, R., & Weizel, M. (2026). Integrated Photonic-Assisted
Signal Processing and Thermal Crosstalk. In Metrology for THz Communications.
Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-01986-8_20
bibtex: '@inbook{De_Mandalawi_Das_Weizel_2026, place={Cham}, title={Integrated Photonic-Assisted
Signal Processing and Thermal Crosstalk}, DOI={10.1007/978-3-032-01986-8_20},
booktitle={Metrology for THz Communications}, publisher={Springer Nature Switzerland},
author={De, Souvaraj and Mandalawi, Younus and Das, Ranjan and Weizel, Maxim},
year={2026} }'
chicago: 'De, Souvaraj, Younus Mandalawi, Ranjan Das, and Maxim Weizel. “Integrated
Photonic-Assisted Signal Processing and Thermal Crosstalk.” In Metrology for
THz Communications. Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-01986-8_20.'
ieee: 'S. De, Y. Mandalawi, R. Das, and M. Weizel, “Integrated Photonic-Assisted
Signal Processing and Thermal Crosstalk,” in Metrology for THz Communications,
Cham: Springer Nature Switzerland, 2026.'
mla: De, Souvaraj, et al. “Integrated Photonic-Assisted Signal Processing and Thermal
Crosstalk.” Metrology for THz Communications, Springer Nature Switzerland,
2026, doi:10.1007/978-3-032-01986-8_20.
short: 'S. De, Y. Mandalawi, R. Das, M. Weizel, in: Metrology for THz Communications,
Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-05-11T07:38:38Z
date_updated: 2026-05-11T07:54:32Z
department:
- _id: '58'
doi: 10.1007/978-3-032-01986-8_20
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/978-3-032-01986-8.pdf
oa: '1'
place: Cham
project:
- _id: '298'
name: 'FOR 2863: Metrologie für die THz Kommunikation (Meteracom)'
- _id: '308'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP: Ultrabreitbandige Abtastung'
- _id: '313'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP C3: Skalierbares THz
Transceiver Impairment Modell'
publication: Metrology for THz Communications
publication_identifier:
isbn:
- '9783032019851'
- '9783032019868'
issn:
- 0342-4111
- 1556-1534
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Integrated Photonic-Assisted Signal Processing and Thermal Crosstalk
type: book_chapter
user_id: '44271'
year: '2026'
...
---
_id: '65601'
abstract:
- lang: eng
text: High-speed ADCs operating in the tens of gigahertz up to potentially terahertz
range are largely constrained by the jitter in their clock sources. By incorporating
photonically assisted samplers that exploit the ultralow jitter of specific mode-locked
lasers (MLLs) as analogue ADC frontends, the performance limits of data converters
can be pushed to achieve unprecedented levels of accuracy. Continuous advancements
in electronic-photonic integration (silicon photonics) are clearing the path for
integrating these systems on a chip scale, thereby leading to increased scalability,
as well as reduced cost and power consumption.
author:
- first_name: Maxim
full_name: Weizel, Maxim
id: '44271'
last_name: Weizel
orcid: 0000-0003-2699-9839
- first_name: Meysam
full_name: Bahmanian, Meysam
id: '69233'
last_name: Bahmanian
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
citation:
ama: 'Weizel M, Bahmanian M, Scheytt JC. Integrated Photonically Assisted Samplers.
In: Metrology for THz Communications. Springer Nature Switzerland; 2026.
doi:10.1007/978-3-032-01986-8_29'
apa: Weizel, M., Bahmanian, M., & Scheytt, J. C. (2026). Integrated Photonically
Assisted Samplers. In Metrology for THz Communications. Springer Nature
Switzerland. https://doi.org/10.1007/978-3-032-01986-8_29
bibtex: '@inbook{Weizel_Bahmanian_Scheytt_2026, place={Cham}, title={Integrated
Photonically Assisted Samplers}, DOI={10.1007/978-3-032-01986-8_29},
booktitle={Metrology for THz Communications}, publisher={Springer Nature Switzerland},
author={Weizel, Maxim and Bahmanian, Meysam and Scheytt, J. Christoph}, year={2026}
}'
chicago: 'Weizel, Maxim, Meysam Bahmanian, and J. Christoph Scheytt. “Integrated
Photonically Assisted Samplers.” In Metrology for THz Communications. Cham:
Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-01986-8_29.'
ieee: 'M. Weizel, M. Bahmanian, and J. C. Scheytt, “Integrated Photonically Assisted
Samplers,” in Metrology for THz Communications, Cham: Springer Nature Switzerland,
2026.'
mla: Weizel, Maxim, et al. “Integrated Photonically Assisted Samplers.” Metrology
for THz Communications, Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-01986-8_29.
short: 'M. Weizel, M. Bahmanian, J.C. Scheytt, in: Metrology for THz Communications,
Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-05-11T07:51:04Z
date_updated: 2026-05-11T07:58:06Z
department:
- _id: '58'
doi: 10.1007/978-3-032-01986-8_29
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/978-3-032-01986-8.pdf
oa: '1'
place: Cham
project:
- _id: '298'
name: 'FOR 2863: Metrologie für die THz Kommunikation (Meteracom)'
- _id: '308'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP: Ultrabreitbandige Abtastung'
- _id: '313'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP C3: Skalierbares THz
Transceiver Impairment Modell'
publication: Metrology for THz Communications
publication_identifier:
isbn:
- '9783032019851'
- '9783032019868'
issn:
- 0342-4111
- 1556-1534
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Integrated Photonically Assisted Samplers
type: book_chapter
user_id: '44271'
year: '2026'
...
---
_id: '65602'
abstract:
- lang: eng
text: This chapter explores the crucial role of simulation and modelling of electronic
and photonic components for terahertz (THz) systems. THz-related challenges already
begin with setting up the signal generation and sampling parameters and continue
with the realistic modelling of the electronic and photonic building blocks. Hereby,
photonic components require not only the modelling of the optical signal propagation
but also the modelling of the electronic interface in the THz regime. Furthermore,
when advancing to the simulation of systems like fully integrated electronic transmit
and receive frontends or photonically assisted analogue-to-digital converters
(ADCs), it is up to the designer to find a suitable level of abstraction. Size,
complexity, and available computational power versus accuracy must be taken into
consideration and prioritized against each other.
author:
- first_name: Dominik
full_name: Wrana, Dominik
last_name: Wrana
- first_name: Maxim
full_name: Weizel, Maxim
last_name: Weizel
- first_name: Simon
full_name: Haussmann, Simon
last_name: Haussmann
- first_name: Meysam
full_name: Bahmanian, Meysam
last_name: Bahmanian
- first_name: Ingmar
full_name: Kallfass, Ingmar
last_name: Kallfass
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
last_name: Scheytt
citation:
ama: 'Wrana D, Weizel M, Haussmann S, Bahmanian M, Kallfass I, Scheytt JC. Simulation
and Modelling of Electronic and Photonic Components. In: Metrology for THz
Communications. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-01986-8_36'
apa: Wrana, D., Weizel, M., Haussmann, S., Bahmanian, M., Kallfass, I., & Scheytt,
J. C. (2026). Simulation and Modelling of Electronic and Photonic Components.
In Metrology for THz Communications. Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-01986-8_36
bibtex: '@inbook{Wrana_Weizel_Haussmann_Bahmanian_Kallfass_Scheytt_2026, place={Cham},
title={Simulation and Modelling of Electronic and Photonic Components}, DOI={10.1007/978-3-032-01986-8_36},
booktitle={Metrology for THz Communications}, publisher={Springer Nature Switzerland},
author={Wrana, Dominik and Weizel, Maxim and Haussmann, Simon and Bahmanian, Meysam
and Kallfass, Ingmar and Scheytt, J. Christoph}, year={2026} }'
chicago: 'Wrana, Dominik, Maxim Weizel, Simon Haussmann, Meysam Bahmanian, Ingmar
Kallfass, and J. Christoph Scheytt. “Simulation and Modelling of Electronic and
Photonic Components.” In Metrology for THz Communications. Cham: Springer
Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-01986-8_36.'
ieee: 'D. Wrana, M. Weizel, S. Haussmann, M. Bahmanian, I. Kallfass, and J. C. Scheytt,
“Simulation and Modelling of Electronic and Photonic Components,” in Metrology
for THz Communications, Cham: Springer Nature Switzerland, 2026.'
mla: Wrana, Dominik, et al. “Simulation and Modelling of Electronic and Photonic
Components.” Metrology for THz Communications, Springer Nature Switzerland,
2026, doi:10.1007/978-3-032-01986-8_36.
short: 'D. Wrana, M. Weizel, S. Haussmann, M. Bahmanian, I. Kallfass, J.C. Scheytt,
in: Metrology for THz Communications, Springer Nature Switzerland, Cham, 2026.'
date_created: 2026-05-11T07:58:34Z
date_updated: 2026-05-11T09:28:52Z
department:
- _id: '58'
doi: 10.1007/978-3-032-01986-8_36
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/978-3-032-01986-8.pdf
oa: '1'
place: Cham
project:
- _id: '298'
name: 'FOR 2863: Metrologie für die THz Kommunikation (Meteracom)'
- _id: '308'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP: Ultrabreitbandige Abtastung'
- _id: '313'
name: 'FOR 2863: Metrologie für die THz Kommunikation, TP C3: Skalierbares THz
Transceiver Impairment Modell'
publication: Metrology for THz Communications
publication_identifier:
isbn:
- '9783032019851'
- '9783032019868'
issn:
- 0342-4111
- 1556-1534
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: Simulation and Modelling of Electronic and Photonic Components
type: book_chapter
user_id: '44271'
year: '2026'
...
---
_id: '65625'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Michael B. K.
full_name: Siegmund, Michael B. K.
last_name: Siegmund
- 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, Hölscher J, Siegmund MBK, Claes L, Henning B. Experimental and
Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric
Systems. In: ; 2026.'
apa: Friesen, O., Hölscher, J., Siegmund, M. B. K., Claes, L., & Henning, B.
(2026). Experimental and Numerical Investigation of Jump Phenomena in the Frequency
Response of Piezoelectric Systems.
bibtex: '@inproceedings{Friesen_Hölscher_Siegmund_Claes_Henning_2026, place={96th
Annual Meeting of the International Association of Applied Mathematics and Mechanics
(GAMM)}, title={Experimental and Numerical Investigation of Jump Phenomena in
the Frequency Response of Piezoelectric Systems}, author={Friesen, Olga and Hölscher,
Jonas and Siegmund, Michael B. K. and Claes, Leander and Henning, Bernd}, year={2026}
}'
chicago: Friesen, Olga, Jonas Hölscher, Michael B. K. Siegmund, Leander Claes, and
Bernd Henning. “Experimental and Numerical Investigation of Jump Phenomena in
the Frequency Response of Piezoelectric Systems.” 96th Annual Meeting of the International
Association of Applied Mathematics and Mechanics (GAMM), 2026.
ieee: O. Friesen, J. Hölscher, M. B. K. Siegmund, L. Claes, and B. Henning, “Experimental
and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric
Systems,” 2026.
mla: Friesen, Olga, et al. Experimental and Numerical Investigation of Jump Phenomena
in the Frequency Response of Piezoelectric Systems. 2026.
short: 'O. Friesen, J. Hölscher, M.B.K. Siegmund, L. Claes, B. Henning, in: 96th
Annual Meeting of the International Association of Applied Mathematics and Mechanics
(GAMM), 2026.'
date_created: 2026-05-13T14:24:34Z
date_updated: 2026-05-13T14:25:54Z
department:
- _id: '49'
language:
- iso: eng
place: 96th Annual Meeting of the International Association of Applied Mathematics
and Mechanics (GAMM)
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Experimental and Numerical Investigation of Jump Phenomena in the Frequency
Response of Piezoelectric Systems
type: conference_abstract
user_id: '44026'
year: '2026'
...
---
_id: '65606'
abstract:
- lang: eng
text: Sound capture by microphone arrays opens the possibility to exploit spatial,
in addition to spectral, information for diarization and signal enhancement, two
important tasks in meeting transcription. However, there is no one-to-one mapping
of positions in space to speakers if speakers move. Here, we address this by proposing
a novel joint spatial and spectral mixture model, whose two submodels are loosely
coupled by modeling the relationship between speaker and position index probabilistically.
Thus, spatial and spectral information can be jointly exploited, while at the
same time allowing for speakers speaking from different positions. Experiments
on the LibriCSS data set with simulated speaker position changes show great improvements
over tightly coupled subsystems.
author:
- first_name: Adrian Tobias
full_name: Meise, Adrian Tobias
id: '79268'
last_name: Meise
- first_name: Tobias
full_name: Cord-Landwehr, Tobias
id: '44393'
last_name: Cord-Landwehr
- first_name: Christoph
full_name: Boeddeker, Christoph
id: '40767'
last_name: Boeddeker
- first_name: Marc
full_name: Delcroix, Marc
last_name: Delcroix
- first_name: Tomohiro
full_name: Nakatani, Tomohiro
last_name: Nakatani
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Meise AT, Cord-Landwehr T, Boeddeker C, Delcroix M, Nakatani T, Haeb-Umbach
R. Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
and Enhancement of Meetings in Dynamic Environments. In: ICASSP 2026 - 2026
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).
IEEE; 2026. doi:10.1109/icassp55912.2026.11463540'
apa: Meise, A. T., Cord-Landwehr, T., Boeddeker, C., Delcroix, M., Nakatani, T.,
& Haeb-Umbach, R. (2026). Loose Coupling of Spectral and Spatial Models for
Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.
ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and Signal
Processing (ICASSP). 2026 IEEE International Conference on Acoustics, Speech
and Signal Processing (ICASSP) , Barcelona. https://doi.org/10.1109/icassp55912.2026.11463540
bibtex: '@inproceedings{Meise_Cord-Landwehr_Boeddeker_Delcroix_Nakatani_Haeb-Umbach_2026,
title={Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
and Enhancement of Meetings in Dynamic Environments}, DOI={10.1109/icassp55912.2026.11463540},
booktitle={ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech
and Signal Processing (ICASSP)}, publisher={IEEE}, author={Meise, Adrian Tobias
and Cord-Landwehr, Tobias and Boeddeker, Christoph and Delcroix, Marc and Nakatani,
Tomohiro and Haeb-Umbach, Reinhold}, year={2026} }'
chicago: Meise, Adrian Tobias, Tobias Cord-Landwehr, Christoph Boeddeker, Marc Delcroix,
Tomohiro Nakatani, and Reinhold Haeb-Umbach. “Loose Coupling of Spectral and Spatial
Models for Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.”
In ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and
Signal Processing (ICASSP). IEEE, 2026. https://doi.org/10.1109/icassp55912.2026.11463540.
ieee: 'A. T. Meise, T. Cord-Landwehr, C. Boeddeker, M. Delcroix, T. Nakatani, and
R. Haeb-Umbach, “Loose Coupling of Spectral and Spatial Models for Multi-Channel
Diarization and Enhancement of Meetings in Dynamic Environments,” presented at
the 2026 IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP) , Barcelona, 2026, doi: 10.1109/icassp55912.2026.11463540.'
mla: Meise, Adrian Tobias, et al. “Loose Coupling of Spectral and Spatial Models
for Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.”
ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and Signal
Processing (ICASSP), IEEE, 2026, doi:10.1109/icassp55912.2026.11463540.
short: 'A.T. Meise, T. Cord-Landwehr, C. Boeddeker, M. Delcroix, T. Nakatani, R.
Haeb-Umbach, in: ICASSP 2026 - 2026 IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP), IEEE, 2026.'
conference:
location: Barcelona
name: ' 2026 IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP) '
date_created: 2026-05-11T14:20:48Z
date_updated: 2026-05-15T08:17:25Z
department:
- _id: '54'
- _id: '1063'
doi: 10.1109/icassp55912.2026.11463540
external_id:
arxiv:
- https://arxiv.org/abs/2601.16077
keyword:
- mixture models
- meeting processing
- diarization
- source separation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2601.16077
oa: '1'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech
and Signal Processing (ICASSP)
publisher: IEEE
status: public
title: Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
and Enhancement of Meetings in Dynamic Environments
type: conference
user_id: '79268'
year: '2026'
...
---
_id: '57866'
abstract:
- lang: eng
text: "The theory of Total Function NP (TFNP) and its subclasses says that, even
if\r\none is promised an efficiently verifiable proof exists for a problem, finding\r\nthis
proof can be intractable. Despite the success of the theory at showing\r\nintractability
of problems such as computing Brouwer fixed points and Nash\r\nequilibria, subclasses
of TFNP remain arguably few and far between. In this\r\nwork, we define two new
subclasses of TFNP borne of the study of complex\r\npolynomial systems: Multi-homogeneous
Systems (MHS) and Sparse Fundamental\r\nTheorem of Algebra (SFTA). The first of
these is based on B\\'ezout's theorem\r\nfrom algebraic geometry, marking the
first TFNP subclass based on an algebraic\r\ngeometric principle. At the heart
of our study is the computational problem\r\nknown as Quantum SAT (QSAT) with
a System of Distinct Representatives (SDR),\r\nfirst studied by [Laumann, L\\\"auchli,
Moessner, Scardicchio, and Sondhi 2010].\r\nAmong other results, we show that
QSAT with SDR is MHS-complete, thus giving\r\nnot only the first link between
quantum complexity theory and TFNP, but also\r\nthe first TFNP problem whose classical
variant (SAT with SDR) is easy but whose\r\nquantum variant is hard. We also show
how to embed the roots of a sparse,\r\nhigh-degree, univariate polynomial into
QSAT with SDR, obtaining that SFTA is\r\ncontained in a zero-error version of
MHS. We conjecture this construction also\r\nworks in the low-error setting, which
would imply SFTA is contained in MHS."
author:
- first_name: Marco
full_name: Aldi, Marco
last_name: Aldi
- first_name: Sevag
full_name: Gharibian, Sevag
id: '71541'
last_name: Gharibian
orcid: 0000-0002-9992-3379
- first_name: Dorian
full_name: Rudolph, Dorian
id: '57863'
last_name: Rudolph
citation:
ama: 'Aldi M, Gharibian S, Rudolph D. An unholy trinity: TFNP, polynomial systems,
and the quantum satisfiability problem. In: 17th Innovations in Theoretical
Computer Science Conference (ITCS 2026). Vol 362. ; 2026:7:1-7:24.'
apa: 'Aldi, M., Gharibian, S., & Rudolph, D. (2026). An unholy trinity: TFNP,
polynomial systems, and the quantum satisfiability problem. 17th Innovations
in Theoretical Computer Science Conference (ITCS 2026), 362, 7:1-7:24.'
bibtex: '@inproceedings{Aldi_Gharibian_Rudolph_2026, title={An unholy trinity: TFNP,
polynomial systems, and the quantum satisfiability problem}, volume={362}, booktitle={17th
Innovations in Theoretical Computer Science Conference (ITCS 2026)}, author={Aldi,
Marco and Gharibian, Sevag and Rudolph, Dorian}, year={2026}, pages={7:1-7:24}
}'
chicago: 'Aldi, Marco, Sevag Gharibian, and Dorian Rudolph. “An Unholy Trinity:
TFNP, Polynomial Systems, and the Quantum Satisfiability Problem.” In 17th
Innovations in Theoretical Computer Science Conference (ITCS 2026), 362:7:1-7:24,
2026.'
ieee: 'M. Aldi, S. Gharibian, and D. Rudolph, “An unholy trinity: TFNP, polynomial
systems, and the quantum satisfiability problem,” in 17th Innovations in Theoretical
Computer Science Conference (ITCS 2026), 2026, vol. 362, p. 7:1-7:24.'
mla: 'Aldi, Marco, et al. “An Unholy Trinity: TFNP, Polynomial Systems, and the
Quantum Satisfiability Problem.” 17th Innovations in Theoretical Computer
Science Conference (ITCS 2026), vol. 362, 2026, p. 7:1-7:24.'
short: 'M. Aldi, S. Gharibian, D. Rudolph, in: 17th Innovations in Theoretical Computer
Science Conference (ITCS 2026), 2026, p. 7:1-7:24.'
date_created: 2024-12-30T13:55:27Z
date_updated: 2026-05-15T08:40:28Z
department:
- _id: '7'
- _id: '623'
external_id:
arxiv:
- '2412.19623'
intvolume: ' 362'
language:
- iso: eng
page: 7:1-7:24
publication: 17th Innovations in Theoretical Computer Science Conference (ITCS 2026)
publication_status: published
status: public
title: 'An unholy trinity: TFNP, polynomial systems, and the quantum satisfiability
problem'
type: conference
user_id: '71541'
volume: 362
year: '2026'
...
---
_id: '65631'
abstract:
- lang: eng
text: "Abstract\r\n \r\n Mathematics
textbooks used to be the key resource for students’ self-regulated learning of
mathematics. Primarily due to the digitalization of society, students have potentially
greater access to a wider range of resources such as internet search engines,
learning platforms, educational videos, and Generative AI. This study investigates
the role of the mathematics textbook in comparison to other resources within students’
self-regulated learning practices. Data were collected via a survey of 1101 German
secondary students, representing three school types (\r\n Gymnasium\r\n
\ ,\r\n Gesamtschule\r\n
\ ,\r\n Realschule\r\n
\ ) and three grade levels (6, 9, and upper secondary). The
questionnaire assessed the frequency of resource use in and outside class, reasons
and purposes of use, and resource-based strategies when facing learning challenges
outside class. Results show that the printed mathematics textbook is the most
frequently used resource both in class and outside class. The textbook remains
the most relevant resource for key purposes, such as an aid for doing homework
and preparing for tests and exams. However, its dominance diminishes with age:
in upper secondary school, students increasingly rely on self-created notes, and
online resources. Correlation analyses reveal moderate to strong links between
in-class and out-of-class use, suggesting an association between resource use
and classroom culture. The findings underscore the textbook’s enduring centrality
as a foundational, trusted resource within a dynamic and increasingly diverse
learning environment. This study calls for pedagogical approaches that integrate
textbooks more intentionally within broader resource systems, supporting students’
agency and strategic resource selection in an era of digital abundance.\r\n "
article_type: original
author:
- first_name: Lea
full_name: Stallmeister, Lea
id: '63369'
last_name: Stallmeister
- first_name: Sebastian
full_name: Rezat, Sebastian
id: '31132'
last_name: Rezat
citation:
ama: Stallmeister L, Rezat S. The role of the mathematics textbook in times of resource
diversity. Educational Studies in Mathematics. Published online 2026. doi:10.1007/s10649-026-10511-7
apa: Stallmeister, L., & Rezat, S. (2026). The role of the mathematics textbook
in times of resource diversity. Educational Studies in Mathematics. https://doi.org/10.1007/s10649-026-10511-7
bibtex: '@article{Stallmeister_Rezat_2026, title={The role of the mathematics textbook
in times of resource diversity}, DOI={10.1007/s10649-026-10511-7},
journal={Educational Studies in Mathematics}, publisher={Springer Science and
Business Media LLC}, author={Stallmeister, Lea and Rezat, Sebastian}, year={2026}
}'
chicago: Stallmeister, Lea, and Sebastian Rezat. “The Role of the Mathematics Textbook
in Times of Resource Diversity.” Educational Studies in Mathematics, 2026.
https://doi.org/10.1007/s10649-026-10511-7.
ieee: 'L. Stallmeister and S. Rezat, “The role of the mathematics textbook in times
of resource diversity,” Educational Studies in Mathematics, 2026, doi:
10.1007/s10649-026-10511-7.'
mla: Stallmeister, Lea, and Sebastian Rezat. “The Role of the Mathematics Textbook
in Times of Resource Diversity.” Educational Studies in Mathematics, Springer
Science and Business Media LLC, 2026, doi:10.1007/s10649-026-10511-7.
short: L. Stallmeister, S. Rezat, Educational Studies in Mathematics (2026).
date_created: 2026-05-17T14:32:31Z
date_updated: 2026-05-17T14:40:54Z
ddc:
- '370'
department:
- _id: '360'
doi: 10.1007/s10649-026-10511-7
keyword:
- mathematics
- textbooks
- userstudy
- resources
- digital resources
- students
- secondary eduction
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10649-026-10511-7
oa: '1'
publication: Educational Studies in Mathematics
publication_identifier:
issn:
- 0013-1954
- 1573-0816
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: The role of the mathematics textbook in times of resource diversity
type: journal_article
user_id: '31132'
year: '2026'
...
---
_id: '65242'
abstract:
- lang: eng
text: With the growing demand for lightweight solutions to reduce emissions, especially
in the transportation, automotive and aerospace sectors, recyclable, continuous
fiber-reinforced plastic composite laminates with a thermoplastic matrix are of
rising interest. To achieve their maximum mechanical properties, the fiber-matrix
adhesion (FMA) is critical. In this work, continuous fiber-reinforced thermoplastic
laminates (CFRTPL) with a polypropylene (PP) matrix and twill woven glass fiber
fabrics are produced by film stacking. The films used contain different amounts
of maleic-anhydride-grafted PP (MA-g-PP) as a coupling agent to produce CFRTPL
of different mechanical strengths. To analyze the FMA, the CFRTPL are subjected
to Charpy-impact and tensile tests. Additionally, single fiber pull-out tests
(SFPT) are conducted to further investigate the effect of MA-g-PP on the FMA.
The results of the SFPT show an improvement in apparent interfacial shear strength
(AIFSS) when the MA-g-PP content is increased, which can be attributed to an increase
in FMA. However, the research shows that MA-g-PP has a low impact on the mechanical
properties if the force is applied parallel to the warp and weft threads during
tensile testing and the results of the Charpy-impact testing suffer from embrittlement
of the matrix material. Subsequently, the results of this study are compared to
three-point flexural tests conducted in a previous study. It can be concluded
that tensile and impact tests are not suited to investigate FMA on a macroscopic
scale, while SFPT and flexural tests provide a better alternative.
author:
- first_name: Elmar
full_name: Moritzer, Elmar
id: '20531'
last_name: Moritzer
- first_name: Philipp
full_name: Brandes, Philipp
id: '70091'
last_name: Brandes
orcid: 0009-0005-9707-0885
- first_name: Maurice
full_name: Wittler, Maurice
id: '76071'
last_name: Wittler
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Markus
full_name: Haag, Markus
last_name: Haag
- first_name: Thomas
full_name: Gries, Thomas
last_name: Gries
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: Moritzer E, Brandes P, Wittler M, et al. Fiber-matrix adhesion in glass fiber
reinforced thermoplastic composite laminates and its effect on mechanical properties.
International Polymer Processing. Published online 2026. doi:10.1515/ipp-2025-0077
apa: Moritzer, E., Brandes, P., Wittler, M., Claes, L., Wippermann, M., Haag, M.,
Gries, T., & Henning, B. (2026). Fiber-matrix adhesion in glass fiber reinforced
thermoplastic composite laminates and its effect on mechanical properties. International
Polymer Processing. https://doi.org/10.1515/ipp-2025-0077
bibtex: '@article{Moritzer_Brandes_Wittler_Claes_Wippermann_Haag_Gries_Henning_2026,
title={Fiber-matrix adhesion in glass fiber reinforced thermoplastic composite
laminates and its effect on mechanical properties}, DOI={10.1515/ipp-2025-0077},
journal={International Polymer Processing}, publisher={Walter de Gruyter GmbH},
author={Moritzer, Elmar and Brandes, Philipp and Wittler, Maurice and Claes, Leander
and Wippermann, Mareen and Haag, Markus and Gries, Thomas and Henning, Bernd},
year={2026} }'
chicago: Moritzer, Elmar, Philipp Brandes, Maurice Wittler, Leander Claes, Mareen
Wippermann, Markus Haag, Thomas Gries, and Bernd Henning. “Fiber-Matrix Adhesion
in Glass Fiber Reinforced Thermoplastic Composite Laminates and Its Effect on
Mechanical Properties.” International Polymer Processing, 2026. https://doi.org/10.1515/ipp-2025-0077.
ieee: 'E. Moritzer et al., “Fiber-matrix adhesion in glass fiber reinforced
thermoplastic composite laminates and its effect on mechanical properties,” International
Polymer Processing, 2026, doi: 10.1515/ipp-2025-0077.'
mla: Moritzer, Elmar, et al. “Fiber-Matrix Adhesion in Glass Fiber Reinforced Thermoplastic
Composite Laminates and Its Effect on Mechanical Properties.” International
Polymer Processing, Walter de Gruyter GmbH, 2026, doi:10.1515/ipp-2025-0077.
short: E. Moritzer, P. Brandes, M. Wittler, L. Claes, M. Wippermann, M. Haag, T.
Gries, B. Henning, International Polymer Processing (2026).
date_created: 2026-03-30T14:14:33Z
date_updated: 2026-05-18T13:06:11Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
- _id: '34'
- _id: '49'
doi: 10.1515/ipp-2025-0077
language:
- iso: eng
project:
- _id: '157'
grant_number: '495847374'
name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer
Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen
sowie deren realitätsnahe Modellierung'
publication: International Polymer Processing
publication_identifier:
issn:
- 0930-777X
- 2195-8602
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Fiber-matrix adhesion in glass fiber reinforced thermoplastic composite laminates
and its effect on mechanical properties
type: journal_article
user_id: '11829'
year: '2026'
...
---
_id: '65630'
abstract:
- lang: eng
text: 'Mathematics textbooks used to be the key resource for students’ self-regulated
learning of mathematics. Primarily due to the digitalization of society, students
have potentially greater access to a wider range of resources such as internet
search engines, learning platforms, educational videos, and Generative AI. This
study investigates the role of the mathematics textbook in comparison to other
resources within students’ self-regulated learning practices. Data were collected
via a survey of 1101 German secondary students, representing three school types
(Gymnasium, Gesamtschule, Realschule) and three grade levels (6, 9, and upper
secondary). The questionnaire assessed the frequency of resource use in and outside
class, reasons and purposes of use, and resource-based strategies when facing
learning challenges outside class. Results show that the printed mathematics textbook
is the most frequently used resource both in class and outside class. The textbook
remains the most relevant resource for key purposes, such as an aid for doing
homework and preparing for tests and exams. However, its dominance diminishes
with age: in upper secondary school, students increasingly rely on self-created
notes, and online resources. Correlation analyses reveal moderate to strong links
between in-class and out-of-class use, suggesting an association between resource
use and classroom culture. The findings underscore the textbook’s enduring centrality
as a foundational, trusted resource within a dynamic and increasingly diverse
learning environment. This study calls for pedagogical approaches that integrate
textbooks more intentionally within broader resource systems, supporting students’
agency and strategic resource selection in an era of digital abundance.'
author:
- first_name: Lea
full_name: Stallmeister, Lea
last_name: Stallmeister
- first_name: Sebastian
full_name: Rezat, Sebastian
last_name: Rezat
citation:
ama: Stallmeister L, Rezat S. The role of the mathematics textbook in times of resource
diversity. Educational Studies in Mathematics. Published online 2026. doi:10.1007/s10649-026-10511-7
apa: Stallmeister, L., & Rezat, S. (2026). The role of the mathematics textbook
in times of resource diversity. Educational Studies in Mathematics. https://doi.org/10.1007/s10649-026-10511-7
bibtex: '@article{Stallmeister_Rezat_2026, title={The role of the mathematics textbook
in times of resource diversity}, DOI={10.1007/s10649-026-10511-7},
journal={Educational Studies in Mathematics}, publisher={Springer}, author={Stallmeister,
Lea and Rezat, Sebastian}, year={2026} }'
chicago: Stallmeister, Lea, and Sebastian Rezat. “The Role of the Mathematics Textbook
in Times of Resource Diversity.” Educational Studies in Mathematics, 2026.
https://doi.org/10.1007/s10649-026-10511-7.
ieee: 'L. Stallmeister and S. Rezat, “The role of the mathematics textbook in times
of resource diversity,” Educational Studies in Mathematics, 2026, doi:
10.1007/s10649-026-10511-7.'
mla: Stallmeister, Lea, and Sebastian Rezat. “The Role of the Mathematics Textbook
in Times of Resource Diversity.” Educational Studies in Mathematics, Springer,
2026, doi:10.1007/s10649-026-10511-7.
short: L. Stallmeister, S. Rezat, Educational Studies in Mathematics (2026).
date_created: 2026-05-16T14:27:57Z
date_updated: 2026-05-16T14:33:38Z
department:
- _id: '98'
doi: 10.1007/s10649-026-10511-7
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10649-026-10511-7
oa: '1'
publication: Educational Studies in Mathematics
publication_status: published
publisher: Springer
status: public
title: The role of the mathematics textbook in times of resource diversity
type: journal_article
user_id: '63369'
year: '2026'
...
---
_id: '65645'
abstract:
- lang: eng
text: Curriculum material is often designed to address content-specific
intended learning goals. However, research indicates that teachers’ personal goals
may cause misalignments between their implementation of curriculum material and
its intended learning goals. This study aims to investigate misalignments between
teachers’ implementation of curriculum material and its intended learning goals
and to which extent they are caused by teachers’ personal goals. To reach this
aim, a qualitative study was conducted to examine how eight vocational school
teachers implemented the learning activity “How many?” suggested for the initial
training of early childhood educators on the topic of set perception and determination
of cardinality. Each participant provided a lesson plan and self-recorded lesson
video on the topic of set perception and determination of cardinality. In addition,
participants were interviewed on how they used the provided curriculum material
for designing their lessons and their potential reasons to adapt or omit “How
many?”. To evaluate their lesson design’s alignment with the activity’s intended
learning goals, the participants' lesson plans were analyzed using qualitative
content analysis. Triangulation of the findings with the interview data revealed
that only one participant fully adopted the intended learning goals as her own
and implemented the activity completely in line with its intended learning goals.
Meanwhile, the remaining participants’ personal goals, such as reducing math anxiety,
seemed to cause misalignments regarding the intended learning goals. The study's
results detail further constraints and affordances to the alignment between teachers’
lesson designs and learning goals intended by curriculum material. It is followed
that it is central to support teachers in adopting intended learning goals as
their personal goals. Otherwise, teachers’ classroom implementation of curriculum
material may not suffice to reach desired outcomes.
article_number: em0883
author:
- first_name: Alix
full_name: Richter, Alix
id: '93186'
last_name: Richter
- first_name: Julia
full_name: Bruns, Julia
id: '72183'
last_name: Bruns
orcid: https://orcid.org/0000-0002-6604-5864
citation:
ama: Richter A, Bruns J. All a question of the goal? Re-tracing (mis)alignments
between teachers’ implementations of curriculum material and intended learning
goals in the context of early childhood educator training in Germany. International
Electronic Journal of Mathematics Education. 2026;21(2). doi:10.29333/iejme/18564
apa: Richter, A., & Bruns, J. (2026). All a question of the goal? Re-tracing
(mis)alignments between teachers’ implementations of curriculum material and intended
learning goals in the context of early childhood educator training in Germany.
International Electronic Journal of Mathematics Education, 21(2),
Article em0883. https://doi.org/10.29333/iejme/18564
bibtex: '@article{Richter_Bruns_2026, title={All a question of the goal? Re-tracing
(mis)alignments between teachers’ implementations of curriculum material and intended
learning goals in the context of early childhood educator training in Germany},
volume={21}, DOI={10.29333/iejme/18564},
number={2em0883}, journal={International Electronic Journal of Mathematics Education},
publisher={Modestum Ltd}, author={Richter, Alix and Bruns, Julia}, year={2026}
}'
chicago: Richter, Alix, and Julia Bruns. “All a Question of the Goal? Re-Tracing
(Mis)Alignments between Teachers’ Implementations of Curriculum Material and Intended
Learning Goals in the Context of Early Childhood Educator Training in Germany.”
International Electronic Journal of Mathematics Education 21, no. 2 (2026).
https://doi.org/10.29333/iejme/18564.
ieee: 'A. Richter and J. Bruns, “All a question of the goal? Re-tracing (mis)alignments
between teachers’ implementations of curriculum material and intended learning
goals in the context of early childhood educator training in Germany,” International
Electronic Journal of Mathematics Education, vol. 21, no. 2, Art. no. em0883,
2026, doi: 10.29333/iejme/18564.'
mla: Richter, Alix, and Julia Bruns. “All a Question of the Goal? Re-Tracing (Mis)Alignments
between Teachers’ Implementations of Curriculum Material and Intended Learning
Goals in the Context of Early Childhood Educator Training in Germany.” International
Electronic Journal of Mathematics Education, vol. 21, no. 2, em0883, Modestum
Ltd, 2026, doi:10.29333/iejme/18564.
short: A. Richter, J. Bruns, International Electronic Journal of Mathematics Education
21 (2026).
date_created: 2026-05-19T13:52:04Z
date_updated: 2026-05-19T14:00:34Z
department:
- _id: '611'
doi: 10.29333/iejme/18564
intvolume: ' 21'
issue: '2'
language:
- iso: eng
publication: International Electronic Journal of Mathematics Education
publication_identifier:
issn:
- 1306-3030
publication_status: published
publisher: Modestum Ltd
status: public
title: All a question of the goal? Re-tracing (mis)alignments between teachers’ implementations
of curriculum material and intended learning goals in the context of early childhood
educator training in Germany
type: journal_article
user_id: '72183'
volume: 21
year: '2026'
...
---
_id: '65013'
author:
- first_name: Marvin
full_name: Illian, Marvin
id: '44169'
last_name: Illian
orcid: 0009-0007-2992-8346
- first_name: Ramin
full_name: Khalili, Ramin
last_name: Khalili
- first_name: Antonio
full_name: A. de A. Rocha, Antonio
last_name: A. de A. Rocha
- first_name: Lin
full_name: Wang, Lin
id: '102868'
last_name: Wang
orcid: 0000-0001-7181-6128
citation:
ama: 'Illian M, Khalili R, A. de A. Rocha A, Wang L. Cells on Autopilot: Adaptive
Cell (Re)Selection via Reinforcement Learning. In: 2026 24th International
Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
(WiOpt). IFIP; 2026.'
apa: 'Illian, M., Khalili, R., A. de A. Rocha, A., & Wang, L. (2026). Cells
on Autopilot: Adaptive Cell (Re)Selection via Reinforcement Learning. 2026
24th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and
Wireless Networks (WiOpt).'
bibtex: '@inproceedings{Illian_Khalili_A. de A. Rocha_Wang_2026, title={Cells on
Autopilot: Adaptive Cell (Re)Selection via Reinforcement Learning}, booktitle={2026
24th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and
Wireless Networks (WiOpt)}, publisher={IFIP}, author={Illian, Marvin and Khalili,
Ramin and A. de A. Rocha, Antonio and Wang, Lin}, year={2026} }'
chicago: 'Illian, Marvin, Ramin Khalili, Antonio A. de A. Rocha, and Lin Wang. “Cells
on Autopilot: Adaptive Cell (Re)Selection via Reinforcement Learning.” In 2026
24th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and
Wireless Networks (WiOpt). IFIP, 2026.'
ieee: 'M. Illian, R. Khalili, A. A. de A. Rocha, and L. Wang, “Cells on Autopilot:
Adaptive Cell (Re)Selection via Reinforcement Learning,” 2026.'
mla: 'Illian, Marvin, et al. “Cells on Autopilot: Adaptive Cell (Re)Selection via
Reinforcement Learning.” 2026 24th International Symposium on Modeling and
Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), IFIP, 2026.'
short: 'M. Illian, R. Khalili, A. A. de A. Rocha, L. Wang, in: 2026 24th International
Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
(WiOpt), IFIP, 2026.'
date_created: 2026-03-16T14:46:45Z
date_updated: 2026-05-20T08:45:27Z
department:
- _id: '75'
language:
- iso: eng
publication: 2026 24th International Symposium on Modeling and Optimization in Mobile,
Ad Hoc, and Wireless Networks (WiOpt)
publisher: IFIP
quality_controlled: '1'
status: public
title: 'Cells on Autopilot: Adaptive Cell (Re)Selection via Reinforcement Learning'
type: conference
user_id: '44169'
year: '2026'
...
---
_id: '65665'
article_number: '101930'
author:
- first_name: Mehdi
full_name: Ahmadi, Mehdi
id: '98967'
last_name: Ahmadi
- first_name: Florian
full_name: Schlosser, Florian
id: '88614'
last_name: Schlosser
- first_name: Denis
full_name: Divkovic, Denis
id: '89059'
last_name: Divkovic
- first_name: Henning
full_name: Meschede, Henning
last_name: Meschede
citation:
ama: 'Ahmadi M, Schlosser F, Divkovic D, Meschede H. Cost-effective and low-carbon
cooling strategies for data centers integrated into wind turbine towers. Energy
Conversion and Management: X. 2026;31. doi:10.1016/j.ecmx.2026.101930'
apa: 'Ahmadi, M., Schlosser, F., Divkovic, D., & Meschede, H. (2026). Cost-effective
and low-carbon cooling strategies for data centers integrated into wind turbine
towers. Energy Conversion and Management: X, 31, Article 101930.
https://doi.org/10.1016/j.ecmx.2026.101930'
bibtex: '@article{Ahmadi_Schlosser_Divkovic_Meschede_2026, title={Cost-effective
and low-carbon cooling strategies for data centers integrated into wind turbine
towers}, volume={31}, DOI={10.1016/j.ecmx.2026.101930},
number={101930}, journal={Energy Conversion and Management: X}, publisher={Elsevier
BV}, author={Ahmadi, Mehdi and Schlosser, Florian and Divkovic, Denis and Meschede,
Henning}, year={2026} }'
chicago: 'Ahmadi, Mehdi, Florian Schlosser, Denis Divkovic, and Henning Meschede.
“Cost-Effective and Low-Carbon Cooling Strategies for Data Centers Integrated
into Wind Turbine Towers.” Energy Conversion and Management: X 31 (2026).
https://doi.org/10.1016/j.ecmx.2026.101930.'
ieee: 'M. Ahmadi, F. Schlosser, D. Divkovic, and H. Meschede, “Cost-effective and
low-carbon cooling strategies for data centers integrated into wind turbine towers,”
Energy Conversion and Management: X, vol. 31, Art. no. 101930, 2026, doi:
10.1016/j.ecmx.2026.101930.'
mla: 'Ahmadi, Mehdi, et al. “Cost-Effective and Low-Carbon Cooling Strategies for
Data Centers Integrated into Wind Turbine Towers.” Energy Conversion and Management:
X, vol. 31, 101930, Elsevier BV, 2026, doi:10.1016/j.ecmx.2026.101930.'
short: 'M. Ahmadi, F. Schlosser, D. Divkovic, H. Meschede, Energy Conversion and
Management: X 31 (2026).'
date_created: 2026-05-20T13:18:46Z
date_updated: 2026-05-20T13:33:48Z
department:
- _id: '644'
doi: 10.1016/j.ecmx.2026.101930
intvolume: ' 31'
language:
- iso: eng
project:
- _id: '449'
name: 'ESN4NW: Energieoptimierte Supercomputer-Netzwerke durch die Nutzung von Windenergie'
publication: 'Energy Conversion and Management: X'
publication_identifier:
issn:
- 2590-1745
publication_status: published
publisher: Elsevier BV
status: public
title: Cost-effective and low-carbon cooling strategies for data centers integrated
into wind turbine towers
type: journal_article
user_id: '98967'
volume: 31
year: '2026'
...