---
_id: '29240'
abstract:
- lang: eng
text: "The principle of least action is one of the most fundamental physical principle.
It says that among all possible motions connecting two points in a phase space,
the system will exhibit those motions which extremise an action functional. Many
qualitative features of dynamical systems, such as the presence of conservation
laws and energy balance equations, are related to the existence of an action functional.
Incorporating variational structure into learning algorithms for dynamical systems
is, therefore, crucial in order to make sure that the learned model shares important
features with the exact physical system. In this paper we show how to incorporate
variational principles into trajectory predictions of learned dynamical systems.
The novelty of this work is that (1) our technique relies only on discrete position
data of observed trajectories. Velocities or conjugate momenta do not need to
be observed or approximated and no prior knowledge about the form of the variational
principle is assumed. Instead, they are recovered using backward error analysis.
(2) Moreover, our technique compensates discretisation errors when trajectories
are computed from the learned system. This is important when moderate to large
step-sizes are used and high accuracy is required. For this,\r\nwe introduce and
rigorously analyse the concept of inverse modified Lagrangians by developing an
inverse version of variational backward error analysis. (3) Finally, we introduce
a method to perform system identification from position observations only, based
on variational backward error analysis."
article_type: original
author:
- first_name: Sina
full_name: Ober-Blöbaum, Sina
id: '16494'
last_name: Ober-Blöbaum
- first_name: Christian
full_name: Offen, Christian
id: '85279'
last_name: Offen
orcid: 0000-0002-5940-8057
citation:
ama: Ober-Blöbaum S, Offen C. Variational Learning of Euler–Lagrange Dynamics from
Data. Journal of Computational and Applied Mathematics. 2023;421:114780.
doi:10.1016/j.cam.2022.114780
apa: Ober-Blöbaum, S., & Offen, C. (2023). Variational Learning of Euler–Lagrange
Dynamics from Data. Journal of Computational and Applied Mathematics, 421,
114780. https://doi.org/10.1016/j.cam.2022.114780
bibtex: '@article{Ober-Blöbaum_Offen_2023, title={Variational Learning of Euler–Lagrange
Dynamics from Data}, volume={421}, DOI={10.1016/j.cam.2022.114780},
journal={Journal of Computational and Applied Mathematics}, publisher={Elsevier},
author={Ober-Blöbaum, Sina and Offen, Christian}, year={2023}, pages={114780}
}'
chicago: 'Ober-Blöbaum, Sina, and Christian Offen. “Variational Learning of Euler–Lagrange
Dynamics from Data.” Journal of Computational and Applied Mathematics 421
(2023): 114780. https://doi.org/10.1016/j.cam.2022.114780.'
ieee: 'S. Ober-Blöbaum and C. Offen, “Variational Learning of Euler–Lagrange Dynamics
from Data,” Journal of Computational and Applied Mathematics, vol. 421,
p. 114780, 2023, doi: 10.1016/j.cam.2022.114780.'
mla: Ober-Blöbaum, Sina, and Christian Offen. “Variational Learning of Euler–Lagrange
Dynamics from Data.” Journal of Computational and Applied Mathematics,
vol. 421, Elsevier, 2023, p. 114780, doi:10.1016/j.cam.2022.114780.
short: S. Ober-Blöbaum, C. Offen, Journal of Computational and Applied Mathematics
421 (2023) 114780.
date_created: 2022-01-11T13:24:00Z
date_updated: 2023-08-10T08:42:39Z
ddc:
- '510'
department:
- _id: '636'
doi: 10.1016/j.cam.2022.114780
external_id:
arxiv:
- '2112.12619'
file:
- access_level: open_access
content_type: application/pdf
creator: coffen
date_created: 2022-06-28T15:25:50Z
date_updated: 2022-06-28T15:25:50Z
description: |-
The principle of least action is one of the most fundamental physical principle. It says that among all possible motions
connecting two points in a phase space, the system will exhibit those motions which extremise an action functional.
Many qualitative features of dynamical systems, such as the presence of conservation laws and energy balance equa-
tions, are related to the existence of an action functional. Incorporating variational structure into learning algorithms
for dynamical systems is, therefore, crucial in order to make sure that the learned model shares important features
with the exact physical system. In this paper we show how to incorporate variational principles into trajectory predic-
tions of learned dynamical systems. The novelty of this work is that (1) our technique relies only on discrete position
data of observed trajectories. Velocities or conjugate momenta do not need to be observed or approximated and no
prior knowledge about the form of the variational principle is assumed. Instead, they are recovered using backward
error analysis. (2) Moreover, our technique compensates discretisation errors when trajectories are computed from the
learned system. This is important when moderate to large step-sizes are used and high accuracy is required. For this,
we introduce and rigorously analyse the concept of inverse modified Lagrangians by developing an inverse version of
variational backward error analysis. (3) Finally, we introduce a method to perform system identification from position
observations only, based on variational backward error analysis.
file_id: '32274'
file_name: ShadowLagrangian_revision1_journal_style_arxiv.pdf
file_size: 3640770
relation: main_file
title: Variational Learning of Euler–Lagrange Dynamics from Data
file_date_updated: 2022-06-28T15:25:50Z
has_accepted_license: '1'
intvolume: ' 421'
keyword:
- Lagrangian learning
- variational backward error analysis
- modified Lagrangian
- variational integrators
- physics informed learning
language:
- iso: eng
oa: '1'
page: '114780'
publication: Journal of Computational and Applied Mathematics
publication_identifier:
issn:
- 0377-0427
publication_status: epub_ahead
publisher: Elsevier
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/Christian-Offen/LagrangianShadowIntegration
status: public
title: Variational Learning of Euler–Lagrange Dynamics from Data
type: journal_article
user_id: '85279'
volume: 421
year: '2023'
...
---
_id: '29236'
abstract:
- lang: eng
text: The numerical solution of an ordinary differential equation can be interpreted
as the exact solution of a nearby modified equation. Investigating the behaviour
of numerical solutions by analysing the modified equation is known as backward
error analysis. If the original and modified equation share structural properties,
then the exact and approximate solution share geometric features such as the existence
of conserved quantities. Conjugate symplectic methods preserve a modified symplectic
form and a modified Hamiltonian when applied to a Hamiltonian system. We show
how a blended version of variational and symplectic techniques can be used to
compute modified symplectic and Hamiltonian structures. In contrast to other approaches,
our backward error analysis method does not rely on an ansatz but computes the
structures systematically, provided that a variational formulation of the method
is known. The technique is illustrated on the example of symmetric linear multistep
methods with matrix coefficients.
article_type: original
author:
- first_name: Robert
full_name: McLachlan, Robert
last_name: McLachlan
- first_name: Christian
full_name: Offen, Christian
id: '85279'
last_name: Offen
orcid: 0000-0002-5940-8057
citation:
ama: McLachlan R, Offen C. Backward error analysis for conjugate symplectic methods.
Journal of Geometric Mechanics. 2023;15(1):98-115. doi:10.3934/jgm.2023005
apa: McLachlan, R., & Offen, C. (2023). Backward error analysis for conjugate
symplectic methods. Journal of Geometric Mechanics, 15(1), 98–115.
https://doi.org/10.3934/jgm.2023005
bibtex: '@article{McLachlan_Offen_2023, title={Backward error analysis for conjugate
symplectic methods}, volume={15}, DOI={10.3934/jgm.2023005},
number={1}, journal={Journal of Geometric Mechanics}, publisher={AIMS Press},
author={McLachlan, Robert and Offen, Christian}, year={2023}, pages={98–115} }'
chicago: 'McLachlan, Robert, and Christian Offen. “Backward Error Analysis for Conjugate
Symplectic Methods.” Journal of Geometric Mechanics 15, no. 1 (2023): 98–115.
https://doi.org/10.3934/jgm.2023005.'
ieee: 'R. McLachlan and C. Offen, “Backward error analysis for conjugate symplectic
methods,” Journal of Geometric Mechanics, vol. 15, no. 1, pp. 98–115, 2023,
doi: 10.3934/jgm.2023005.'
mla: McLachlan, Robert, and Christian Offen. “Backward Error Analysis for Conjugate
Symplectic Methods.” Journal of Geometric Mechanics, vol. 15, no. 1, AIMS
Press, 2023, pp. 98–115, doi:10.3934/jgm.2023005.
short: R. McLachlan, C. Offen, Journal of Geometric Mechanics 15 (2023) 98–115.
date_created: 2022-01-11T12:48:39Z
date_updated: 2023-08-10T08:40:30Z
ddc:
- '510'
department:
- _id: '636'
doi: 10.3934/jgm.2023005
external_id:
arxiv:
- '2201.03911'
file:
- access_level: open_access
content_type: application/pdf
creator: coffen
date_created: 2022-08-12T16:48:59Z
date_updated: 2022-08-12T16:48:59Z
description: The numerical solution of an ordinary differential equation can be
interpreted as the exact solution of a nearby modified equation. Investigating
the behaviour of numerical solutions by analysing the modified equation is known
as backward error analysis. If the original and modified equation share structural
properties, then the exact and approximate solution share geometric features such
as the existence of conserved quantities. Conjugate symplectic methods preserve
a modified symplectic form and a modified Hamiltonian when applied to a Hamiltonian
system. We show how a blended version of variational and symplectic techniques
can be used to compute modified symplectic and Hamiltonian structures. In contrast
to other approaches, our backward error analysis method does not rely on an ansatz
but computes the structures systematically, provided that a variational formulation
of the method is known. The technique is illustrated on the example of symmetric
linear multistep methods with matrix coefficients.
file_id: '32801'
file_name: BEA_MultiStep_Matrix.pdf
file_size: 827030
relation: main_file
title: Backward error analysis for conjugate symplectic methods
file_date_updated: 2022-08-12T16:48:59Z
has_accepted_license: '1'
intvolume: ' 15'
issue: '1'
keyword:
- variational integrators
- backward error analysis
- Euler--Lagrange equations
- multistep methods
- conjugate symplectic methods
language:
- iso: eng
oa: '1'
page: 98-115
publication: Journal of Geometric Mechanics
publication_status: published
publisher: AIMS Press
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/Christian-Offen/BEAConjugateSymplectic
status: public
title: Backward error analysis for conjugate symplectic methods
type: journal_article
user_id: '85279'
volume: 15
year: '2023'
...
---
_id: '37654'
abstract:
- lang: eng
text: "Recently, Hamiltonian neural networks (HNN) have been introduced to incorporate
prior physical knowledge when\r\nlearning the dynamical equations of Hamiltonian
systems. Hereby, the symplectic system structure is preserved despite\r\nthe data-driven
modeling approach. However, preserving symmetries requires additional attention.
In this research, we\r\nenhance the HNN with a Lie algebra framework to detect
and embed symmetries in the neural network. This approach\r\nallows to simultaneously
learn the symmetry group action and the total energy of the system. As illustrating
examples,\r\na pendulum on a cart and a two-body problem from astrodynamics are
considered."
article_number: '063115'
article_type: original
author:
- first_name: Eva
full_name: Dierkes, Eva
last_name: Dierkes
- first_name: Christian
full_name: Offen, Christian
id: '85279'
last_name: Offen
orcid: 0000-0002-5940-8057
- first_name: Sina
full_name: Ober-Blöbaum, Sina
id: '16494'
last_name: Ober-Blöbaum
- first_name: Kathrin
full_name: Flaßkamp, Kathrin
last_name: Flaßkamp
citation:
ama: Dierkes E, Offen C, Ober-Blöbaum S, Flaßkamp K. Hamiltonian Neural Networks
with Automatic Symmetry Detection. Chaos. 2023;33(6). doi:10.1063/5.0142969
apa: Dierkes, E., Offen, C., Ober-Blöbaum, S., & Flaßkamp, K. (2023). Hamiltonian
Neural Networks with Automatic Symmetry Detection. Chaos, 33(6),
Article 063115. https://doi.org/10.1063/5.0142969
bibtex: '@article{Dierkes_Offen_Ober-Blöbaum_Flaßkamp_2023, title={Hamiltonian Neural
Networks with Automatic Symmetry Detection}, volume={33}, DOI={10.1063/5.0142969},
number={6063115}, journal={Chaos}, publisher={AIP Publishing}, author={Dierkes,
Eva and Offen, Christian and Ober-Blöbaum, Sina and Flaßkamp, Kathrin}, year={2023}
}'
chicago: Dierkes, Eva, Christian Offen, Sina Ober-Blöbaum, and Kathrin Flaßkamp.
“Hamiltonian Neural Networks with Automatic Symmetry Detection.” Chaos
33, no. 6 (2023). https://doi.org/10.1063/5.0142969.
ieee: 'E. Dierkes, C. Offen, S. Ober-Blöbaum, and K. Flaßkamp, “Hamiltonian Neural
Networks with Automatic Symmetry Detection,” Chaos, vol. 33, no. 6, Art.
no. 063115, 2023, doi: 10.1063/5.0142969.'
mla: Dierkes, Eva, et al. “Hamiltonian Neural Networks with Automatic Symmetry Detection.”
Chaos, vol. 33, no. 6, 063115, AIP Publishing, 2023, doi:10.1063/5.0142969.
short: E. Dierkes, C. Offen, S. Ober-Blöbaum, K. Flaßkamp, Chaos 33 (2023).
date_created: 2023-01-20T09:10:06Z
date_updated: 2023-08-10T08:37:01Z
ddc:
- '510'
department:
- _id: '636'
doi: 10.1063/5.0142969
external_id:
arxiv:
- '2301.07928'
file:
- access_level: open_access
content_type: application/pdf
creator: coffen
date_created: 2023-04-26T16:20:56Z
date_updated: 2023-04-26T16:20:56Z
description: |-
Incorporating physical system knowledge into data-driven
system identification has been shown to be beneficial. The
approach presented in this article combines learning of an
energy-conserving model from data with detecting a Lie
group representation of the unknown system symmetry.
The proposed approach can improve the learned model
and reveal underlying symmetry simultaneously.
file_id: '44205'
file_name: JournalPaper_main.pdf
file_size: 5200111
relation: main_file
title: Hamiltonian Neural Networks with Automatic Symmetry Detection
file_date_updated: 2023-04-26T16:20:56Z
has_accepted_license: '1'
intvolume: ' 33'
issue: '6'
language:
- iso: eng
oa: '1'
publication: Chaos
publication_identifier:
issn:
- 1054-1500
publication_status: published
publisher: AIP Publishing
related_material:
link:
- description: GitHub
relation: software
url: https://github.com/eva-dierkes/HNN_withSymmetries
status: public
title: Hamiltonian Neural Networks with Automatic Symmetry Detection
type: journal_article
user_id: '85279'
volume: 33
year: '2023'
...
---
_id: '46482'
abstract:
- lang: eng
text: "Ever increasing demands on the performance of microchips are leading to ever
more complex semiconductor technologies with ever shrinking feature sizes. Complex
applications with high demands on safety and reliability, such as autonomous driving,
are simultaneously driving the requirements for test and diagnosis of VLSI circuits.
Throughout the life cycle of a microchip, uncertainties occur that affect its
timing behavior. For example, weak circuit structures, aging effects, or process
variations can lead to a change in the timing behavior of the circuit. While these
uncertainties do not necessarily lead to a change of the functional behavior,
they can lead to a reliability problem.\r\nWith modular and hybrid compaction
two test instruments are presented in this work that can be used for X-tolerant
test response compaction in the built-in Faster-than-At-Speed Test (FAST) which
is used to detect uncertainties in VLSI circuits. One challenge for test response
compaction during FAST is the high and varying X-rate at the outputs of the circuit
under test. By dividing the circuit outputs into test groups and separately compacting
these test groups using stochastic compactors, the modular compaction is able
to handle these high and varying X-rates.\r\nTo deal with uncertainties on logic
interconnects, a method for distinguishing crosstalk and process variation is
presented. In current semiconductor technologies, the number of parasitic coupling
capacitances between logic interconnects is growing. These coupling capacitances
can lead to crosstalk, which causes increased current flow in the logic interconnects,
which in turn can lead to increased electromigration. In the presented method,
delay maps describing the timing behavior of the circuit outputs at different
operating points are used to train artificial neural networks which classify the
tested circuits into fault-free and faulty."
- lang: ger
text: "Immer größere Anforderungen an die Leistungsfähigkeit von Mikrochips führen
zu Halbleitertechnologien mit immer kleiner werdenden Strukturgrößen. Anwendungen
mit hohen Ansprüchen an Sicherheit und Zuverlässigkeit, wie z.B. das autonome
Fahren, treiben gleichzeitig die Anforderungen an den Test hochintegrierter Schaltungen
an. Während des gesamten Lebenszyklus eines Mikrochips kommt es zu Unsicherheiten
im Zeitverhalten. So können z.B. schwache Schaltungsstrukturen, Alterungseffekte
oder Prozessvariationen zu einer Veränderung des Zeitverhaltens führen. Während
diese Unsicherheiten nicht zu einer Veränderung des funktionalen Verhaltens führen
müssen, können sie jedoch zu einem Zuverlässigkeitsproblem führen.\r\nMit der
modularen und der hybriden Kompaktierung werden in dieser Arbeit zwei Testinstrumente
vorgestellt, die für die X-tolerante Testantwortkompaktierung im eingebauten Hochgeschwindigkeitstest
verwendet werden können. Eine Herausforderung für die Testantwortkompaktierung
während des Hochgeschwindigkeitstests ist die hohe und variierende X-Rate an den
Ausgängen der zu testenden Schaltung. Durch die Einteilung der Schaltungsausgänge
in Prüfgruppen und die separierte Kompaktierung der Prüfgruppen mithilfe von stochastischen
Kompaktierern, können die vorgestellten Verfahren diese hohen und variierenden
X-Raten verarbeiten.\r\nFür den Umgang mit Unsicherheiten auf Verbindungsleitungen
der Logik-Schaltung wird ein Verfahren zur Unterscheidung von Übersprechen und
Prozessvariation vorgestellt. In aktuellen Halbleitertechnologien kommt es vermehrt
zu parasitären Koppelkapazitäten zwischen den Verbindungsleitungen. In dem vorgestellten
Verfahren werden künstliche neuronale Netze trainiert, um die Schaltungen in fehlerfrei
und fehlerhaft zu klassifizieren."
author:
- first_name: Alexander
full_name: Sprenger, Alexander
id: '22707'
last_name: Sprenger
orcid: 0000-0002-0775-7677
citation:
ama: Sprenger A. Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten
in Logikblöcken hochintegrierter Schaltungen. Universität Paderborn; 2023.
doi:10.17619/UNIPB/1-1787
apa: Sprenger, A. (2023). Testinstrumente und Testdatenanalyse zur Verarbeitung
von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen. Universität
Paderborn. https://doi.org/10.17619/UNIPB/1-1787
bibtex: '@book{Sprenger_2023, place={Paderborn}, title={Testinstrumente und Testdatenanalyse
zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen},
DOI={10.17619/UNIPB/1-1787},
publisher={Universität Paderborn}, author={Sprenger, Alexander}, year={2023} }'
chicago: 'Sprenger, Alexander. Testinstrumente und Testdatenanalyse zur Verarbeitung
von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen. Paderborn:
Universität Paderborn, 2023. https://doi.org/10.17619/UNIPB/1-1787.'
ieee: 'A. Sprenger, Testinstrumente und Testdatenanalyse zur Verarbeitung von
Unsicherheiten in Logikblöcken hochintegrierter Schaltungen. Paderborn: Universität
Paderborn, 2023.'
mla: Sprenger, Alexander. Testinstrumente und Testdatenanalyse zur Verarbeitung
von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen. Universität
Paderborn, 2023, doi:10.17619/UNIPB/1-1787.
short: A. Sprenger, Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten
in Logikblöcken hochintegrierter Schaltungen, Universität Paderborn, Paderborn,
2023.
date_created: 2023-08-12T09:10:38Z
date_updated: 2023-08-12T09:13:18Z
department:
- _id: '48'
doi: 10.17619/UNIPB/1-1787
extern: '1'
keyword:
- Testantwortkompaktierung
- Prozessvariation
- Silicon Lifecycle Management
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://nbn-resolving.org/urn:nbn:de:hbz:466:2-45493
oa: '1'
page: xi, 160
place: Paderborn
publication_status: published
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Sybille
full_name: Hellebrand, Sybille
id: '209'
last_name: Hellebrand
orcid: 0000-0002-3717-3939
- first_name: Marco
full_name: Platzner, Marco
id: '398'
last_name: Platzner
title: Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in
Logikblöcken hochintegrierter Schaltungen
type: dissertation
user_id: '22707'
year: '2023'
...
---
_id: '46579'
abstract:
- lang: eng
text: "The Koopman operator has become an essential tool for data-driven analysis,
prediction and control of complex systems, the main reason being the enormous
potential of identifying linear function space representations of nonlinear\r\ndynamics
from measurements. Until now, the situation where for large-scale systems, we
(i) only have access to partial observations (i.e., measurements, as is very common
for experimental data) or (ii) deliberately perform coarse\r\ngraining (for efficiency
reasons) has not been treated to its full extent. In this paper, we address the
pitfall associated with this situation, that the classical EDMD algorithm does
not automatically provide a Koopman operator approximation for the underlying
system if we do not carefully select the number of observables. Moreover, we show
that symmetries in the system dynamics can be carried over to the Koopman operator,
which allows us to massively increase the model efficiency. We also briefly draw
a connection to domain decomposition techniques for partial differential equations
and present numerical evidence using the Kuramoto--Sivashinsky equation."
author:
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
- first_name: Hans
full_name: Harder, Hans
id: '98879'
last_name: Harder
- first_name: Feliks
full_name: Nüske, Feliks
last_name: Nüske
- first_name: Friedrich
full_name: Philipp, Friedrich
last_name: Philipp
- first_name: Manuel
full_name: Schaller, Manuel
last_name: Schaller
- first_name: Karl
full_name: Worthmann, Karl
last_name: Worthmann
citation:
ama: Peitz S, Harder H, Nüske F, Philipp F, Schaller M, Worthmann K. Partial observations,
coarse graining and equivariance in Koopman operator theory for large-scale dynamical
systems. arXiv:230715325. Published online 2023.
apa: Peitz, S., Harder, H., Nüske, F., Philipp, F., Schaller, M., & Worthmann,
K. (2023). Partial observations, coarse graining and equivariance in Koopman
operator theory for large-scale dynamical systems. In arXiv:2307.15325.
bibtex: '@article{Peitz_Harder_Nüske_Philipp_Schaller_Worthmann_2023, title={Partial
observations, coarse graining and equivariance in Koopman operator theory for
large-scale dynamical systems}, journal={arXiv:2307.15325}, author={Peitz, Sebastian
and Harder, Hans and Nüske, Feliks and Philipp, Friedrich and Schaller, Manuel
and Worthmann, Karl}, year={2023} }'
chicago: Peitz, Sebastian, Hans Harder, Feliks Nüske, Friedrich Philipp, Manuel
Schaller, and Karl Worthmann. “Partial Observations, Coarse Graining and Equivariance
in Koopman Operator Theory for Large-Scale Dynamical Systems.” ArXiv:2307.15325,
2023.
ieee: S. Peitz, H. Harder, F. Nüske, F. Philipp, M. Schaller, and K. Worthmann,
“Partial observations, coarse graining and equivariance in Koopman operator theory
for large-scale dynamical systems,” arXiv:2307.15325. 2023.
mla: Peitz, Sebastian, et al. “Partial Observations, Coarse Graining and Equivariance
in Koopman Operator Theory for Large-Scale Dynamical Systems.” ArXiv:2307.15325,
2023.
short: S. Peitz, H. Harder, F. Nüske, F. Philipp, M. Schaller, K. Worthmann, ArXiv:2307.15325
(2023).
date_created: 2023-08-21T05:52:24Z
date_updated: 2023-08-21T05:53:35Z
department:
- _id: '655'
external_id:
arxiv:
- '2307.15325'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2307.15325
oa: '1'
publication: arXiv:2307.15325
status: public
title: Partial observations, coarse graining and equivariance in Koopman operator
theory for large-scale dynamical systems
type: preprint
user_id: '47427'
year: '2023'
...
---
_id: '45602'
article_number: '100152'
author:
- first_name: Yasin
full_name: Karakaya, Yasin
id: '95069'
last_name: Karakaya
- first_name: H.
full_name: Somnitz, H.
last_name: Somnitz
- first_name: A.
full_name: Hermsen, A.
last_name: Hermsen
- first_name: Munko
full_name: Gonchikzhapov, Munko
id: '94996'
last_name: Gonchikzhapov
orcid: https://orcid.org/0000-0002-7773-047X
- first_name: Tina
full_name: Kasper, Tina
id: '94562'
last_name: Kasper
orcid: '0000-0003-3993-5316 '
citation:
ama: Karakaya Y, Somnitz H, Hermsen A, Gonchikzhapov M, Kasper T. Revisiting the
initial reaction rates for TMS combustion and a new evidence for metastable silica
nanoparticles in the gas-phase synthesis. Applications in Energy and Combustion
Science. 2023;14. doi:10.1016/j.jaecs.2023.100152
apa: Karakaya, Y., Somnitz, H., Hermsen, A., Gonchikzhapov, M., & Kasper, T.
(2023). Revisiting the initial reaction rates for TMS combustion and a new evidence
for metastable silica nanoparticles in the gas-phase synthesis. Applications
in Energy and Combustion Science, 14, Article 100152. https://doi.org/10.1016/j.jaecs.2023.100152
bibtex: '@article{Karakaya_Somnitz_Hermsen_Gonchikzhapov_Kasper_2023, title={Revisiting
the initial reaction rates for TMS combustion and a new evidence for metastable
silica nanoparticles in the gas-phase synthesis}, volume={14}, DOI={10.1016/j.jaecs.2023.100152},
number={100152}, journal={Applications in Energy and Combustion Science}, publisher={Elsevier
BV}, author={Karakaya, Yasin and Somnitz, H. and Hermsen, A. and Gonchikzhapov,
Munko and Kasper, Tina}, year={2023} }'
chicago: Karakaya, Yasin, H. Somnitz, A. Hermsen, Munko Gonchikzhapov, and Tina
Kasper. “Revisiting the Initial Reaction Rates for TMS Combustion and a New Evidence
for Metastable Silica Nanoparticles in the Gas-Phase Synthesis.” Applications
in Energy and Combustion Science 14 (2023). https://doi.org/10.1016/j.jaecs.2023.100152.
ieee: 'Y. Karakaya, H. Somnitz, A. Hermsen, M. Gonchikzhapov, and T. Kasper, “Revisiting
the initial reaction rates for TMS combustion and a new evidence for metastable
silica nanoparticles in the gas-phase synthesis,” Applications in Energy and
Combustion Science, vol. 14, Art. no. 100152, 2023, doi: 10.1016/j.jaecs.2023.100152.'
mla: Karakaya, Yasin, et al. “Revisiting the Initial Reaction Rates for TMS Combustion
and a New Evidence for Metastable Silica Nanoparticles in the Gas-Phase Synthesis.”
Applications in Energy and Combustion Science, vol. 14, 100152, Elsevier
BV, 2023, doi:10.1016/j.jaecs.2023.100152.
short: Y. Karakaya, H. Somnitz, A. Hermsen, M. Gonchikzhapov, T. Kasper, Applications
in Energy and Combustion Science 14 (2023).
date_created: 2023-06-13T18:32:33Z
date_updated: 2023-08-22T20:03:29Z
department:
- _id: '728'
doi: 10.1016/j.jaecs.2023.100152
intvolume: ' 14'
keyword:
- Metastable particles
- Nanomaterials
- Quartz-crystal-microbalance
- Molecular-beam mass spectrometry
- Tetramethylsilane
- Reaction kinetics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S2666352X23000419
oa: '1'
publication: Applications in Energy and Combustion Science
publication_identifier:
issn:
- 2666-352X
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Revisiting the initial reaction rates for TMS combustion and a new evidence
for metastable silica nanoparticles in the gas-phase synthesis
type: journal_article
user_id: '94996'
volume: 14
year: '2023'
...
---
_id: '23428'
abstract:
- lang: eng
text: "The Koopman operator has become an essential tool for data-driven approximation
of dynamical (control) systems in recent years, e.g., via extended dynamic mode
decomposition. Despite its popularity, convergence results and, in particular,
error bounds are still quite scarce. In this paper, we derive probabilistic bounds
for the approximation error and the prediction error depending on the number of
training data points; for both ordinary and stochastic differential equations.
Moreover, we extend our analysis to nonlinear control-affine systems using either
ergodic trajectories or i.i.d.\r\nsamples. Here, we exploit the linearity of the
Koopman generator to obtain a bilinear system and, thus, circumvent the curse
of dimensionality since we do not autonomize the system by augmenting the state
by the control inputs. To the\r\nbest of our knowledge, this is the first finite-data
error analysis in the stochastic and/or control setting. Finally, we demonstrate
the effectiveness of the proposed approach by comparing it with state-of-the-art
techniques showing its superiority whenever state and control are coupled."
article_number: '14'
author:
- first_name: Feliks
full_name: Nüske, Feliks
id: '81513'
last_name: Nüske
orcid: 0000-0003-2444-7889
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
- first_name: Friedrich
full_name: Philipp, Friedrich
last_name: Philipp
- first_name: Manuel
full_name: Schaller, Manuel
last_name: Schaller
- first_name: Karl
full_name: Worthmann, Karl
last_name: Worthmann
citation:
ama: Nüske F, Peitz S, Philipp F, Schaller M, Worthmann K. Finite-data error bounds
for Koopman-based prediction and control. Journal of Nonlinear Science.
2023;33. doi:10.1007/s00332-022-09862-1
apa: Nüske, F., Peitz, S., Philipp, F., Schaller, M., & Worthmann, K. (2023).
Finite-data error bounds for Koopman-based prediction and control. Journal
of Nonlinear Science, 33, Article 14. https://doi.org/10.1007/s00332-022-09862-1
bibtex: '@article{Nüske_Peitz_Philipp_Schaller_Worthmann_2023, title={Finite-data
error bounds for Koopman-based prediction and control}, volume={33}, DOI={10.1007/s00332-022-09862-1},
number={14}, journal={Journal of Nonlinear Science}, author={Nüske, Feliks and
Peitz, Sebastian and Philipp, Friedrich and Schaller, Manuel and Worthmann, Karl},
year={2023} }'
chicago: Nüske, Feliks, Sebastian Peitz, Friedrich Philipp, Manuel Schaller, and
Karl Worthmann. “Finite-Data Error Bounds for Koopman-Based Prediction and Control.”
Journal of Nonlinear Science 33 (2023). https://doi.org/10.1007/s00332-022-09862-1.
ieee: 'F. Nüske, S. Peitz, F. Philipp, M. Schaller, and K. Worthmann, “Finite-data
error bounds for Koopman-based prediction and control,” Journal of Nonlinear
Science, vol. 33, Art. no. 14, 2023, doi: 10.1007/s00332-022-09862-1.'
mla: Nüske, Feliks, et al. “Finite-Data Error Bounds for Koopman-Based Prediction
and Control.” Journal of Nonlinear Science, vol. 33, 14, 2023, doi:10.1007/s00332-022-09862-1.
short: F. Nüske, S. Peitz, F. Philipp, M. Schaller, K. Worthmann, Journal of Nonlinear
Science 33 (2023).
date_created: 2021-08-17T12:25:09Z
date_updated: 2023-08-24T07:50:12Z
department:
- _id: '101'
- _id: '655'
doi: 10.1007/s00332-022-09862-1
intvolume: ' 33'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/s00332-022-09862-1.pdf
oa: '1'
publication: Journal of Nonlinear Science
publication_status: published
status: public
title: Finite-data error bounds for Koopman-based prediction and control
type: journal_article
user_id: '47427'
volume: 33
year: '2023'
...
---
_id: '46637'
article_number: '100174'
author:
- first_name: Munko
full_name: Gonchikzhapov, Munko
id: '94996'
last_name: Gonchikzhapov
orcid: https://orcid.org/0000-0002-7773-047X
- first_name: Tina
full_name: Kasper, Tina
id: '94562'
last_name: Kasper
orcid: '0000-0003-3993-5316 '
citation:
ama: Gonchikzhapov M, Kasper T. Thermal and chemical structure of ethanol and 2-ethylhexanoic
acid/ethanol SpraySyn flames. Applications in Energy and Combustion Science.
2023;15. doi:10.1016/j.jaecs.2023.100174
apa: Gonchikzhapov, M., & Kasper, T. (2023). Thermal and chemical structure
of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames. Applications in
Energy and Combustion Science, 15, Article 100174. https://doi.org/10.1016/j.jaecs.2023.100174
bibtex: '@article{Gonchikzhapov_Kasper_2023, title={Thermal and chemical structure
of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames}, volume={15}, DOI={10.1016/j.jaecs.2023.100174},
number={100174}, journal={Applications in Energy and Combustion Science}, publisher={Elsevier
BV}, author={Gonchikzhapov, Munko and Kasper, Tina}, year={2023} }'
chicago: Gonchikzhapov, Munko, and Tina Kasper. “Thermal and Chemical Structure
of Ethanol and 2-Ethylhexanoic Acid/Ethanol SpraySyn Flames.” Applications
in Energy and Combustion Science 15 (2023). https://doi.org/10.1016/j.jaecs.2023.100174.
ieee: 'M. Gonchikzhapov and T. Kasper, “Thermal and chemical structure of ethanol
and 2-ethylhexanoic acid/ethanol SpraySyn flames,” Applications in Energy and
Combustion Science, vol. 15, Art. no. 100174, 2023, doi: 10.1016/j.jaecs.2023.100174.'
mla: Gonchikzhapov, Munko, and Tina Kasper. “Thermal and Chemical Structure of Ethanol
and 2-Ethylhexanoic Acid/Ethanol SpraySyn Flames.” Applications in Energy and
Combustion Science, vol. 15, 100174, Elsevier BV, 2023, doi:10.1016/j.jaecs.2023.100174.
short: M. Gonchikzhapov, T. Kasper, Applications in Energy and Combustion Science
15 (2023).
date_created: 2023-08-22T13:26:37Z
date_updated: 2023-08-24T08:55:26Z
department:
- _id: '43'
doi: 10.1016/j.jaecs.2023.100174
intvolume: ' 15'
keyword:
- Nanoparticle synthesis
- Flame spray pyrolysis
- SpraySyn burner
- Flame structure
- Species distribution
- Temperature distribution
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S2666352X23000638
oa: '1'
publication: Applications in Energy and Combustion Science
publication_identifier:
issn:
- 2666-352X
publication_status: published
publisher: Elsevier BV
status: public
title: Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol
SpraySyn flames
type: journal_article
user_id: '94996'
volume: 15
year: '2023'
...
---
_id: '46784'
article_number: '5616'
author:
- first_name: Oliver
full_name: Wallscheid, Oliver
id: '11291'
last_name: Wallscheid
orcid: https://orcid.org/0000-0001-9362-8777
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
- first_name: Jan
full_name: Stenner, Jan
id: '65520'
last_name: Stenner
- first_name: Daniel
full_name: Weber, Daniel
id: '24041'
last_name: Weber
orcid: 0000-0003-3367-5998
- first_name: Septimus
full_name: Boshoff, Septimus
last_name: Boshoff
- first_name: Marvin
full_name: Meyer, Marvin
last_name: Meyer
- first_name: Vikas
full_name: Chidananda, Vikas
last_name: Chidananda
- first_name: Oliver
full_name: Schweins, Oliver
last_name: Schweins
citation:
ama: Wallscheid O, Peitz S, Stenner J, et al. ElectricGrid.jl - A Julia-based modeling
and simulationtool for power electronics-driven electric energy grids. Journal
of Open Source Software. 2023;8(89). doi:10.21105/joss.05616
apa: Wallscheid, O., Peitz, S., Stenner, J., Weber, D., Boshoff, S., Meyer, M.,
Chidananda, V., & Schweins, O. (2023). ElectricGrid.jl - A Julia-based modeling
and simulationtool for power electronics-driven electric energy grids. Journal
of Open Source Software, 8(89), Article 5616. https://doi.org/10.21105/joss.05616
bibtex: '@article{Wallscheid_Peitz_Stenner_Weber_Boshoff_Meyer_Chidananda_Schweins_2023,
title={ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven
electric energy grids}, volume={8}, DOI={10.21105/joss.05616},
number={895616}, journal={Journal of Open Source Software}, publisher={The Open
Journal}, author={Wallscheid, Oliver and Peitz, Sebastian and Stenner, Jan and
Weber, Daniel and Boshoff, Septimus and Meyer, Marvin and Chidananda, Vikas and
Schweins, Oliver}, year={2023} }'
chicago: Wallscheid, Oliver, Sebastian Peitz, Jan Stenner, Daniel Weber, Septimus
Boshoff, Marvin Meyer, Vikas Chidananda, and Oliver Schweins. “ElectricGrid.Jl
- A Julia-Based Modeling and Simulationtool for Power Electronics-Driven Electric
Energy Grids.” Journal of Open Source Software 8, no. 89 (2023). https://doi.org/10.21105/joss.05616.
ieee: 'O. Wallscheid et al., “ElectricGrid.jl - A Julia-based modeling and
simulationtool for power electronics-driven electric energy grids,” Journal
of Open Source Software, vol. 8, no. 89, Art. no. 5616, 2023, doi: 10.21105/joss.05616.'
mla: Wallscheid, Oliver, et al. “ElectricGrid.Jl - A Julia-Based Modeling and Simulationtool
for Power Electronics-Driven Electric Energy Grids.” Journal of Open Source
Software, vol. 8, no. 89, 5616, The Open Journal, 2023, doi:10.21105/joss.05616.
short: O. Wallscheid, S. Peitz, J. Stenner, D. Weber, S. Boshoff, M. Meyer, V. Chidananda,
O. Schweins, Journal of Open Source Software 8 (2023).
date_created: 2023-09-04T11:05:03Z
date_updated: 2023-09-04T11:06:06Z
department:
- _id: '655'
- _id: '52'
doi: 10.21105/joss.05616
intvolume: ' 8'
issue: '89'
keyword:
- General Earth and Planetary Sciences
- General Environmental Science
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://joss.theoj.org/papers/10.21105/joss.05616
oa: '1'
publication: Journal of Open Source Software
publication_identifier:
issn:
- 2475-9066
publication_status: published
publisher: The Open Journal
status: public
title: ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven
electric energy grids
type: journal_article
user_id: '47427'
volume: 8
year: '2023'
...
---
_id: '46186'
author:
- first_name: Lukas
full_name: Höper, Lukas
id: '58041'
last_name: Höper
- first_name: Carsten
full_name: Schulte, Carsten
id: '60311'
last_name: Schulte
citation:
ama: Höper L, Schulte C. Paradigmenwechsel vom klassischen zum datengetriebenen
Problemlösen im Informatikunterricht. MNU journal. 2023;76(4):314-320.
apa: Höper, L., & Schulte, C. (2023). Paradigmenwechsel vom klassischen zum
datengetriebenen Problemlösen im Informatikunterricht. MNU journal, 76(4),
314–320.
bibtex: '@article{Höper_Schulte_2023, title={Paradigmenwechsel vom klassischen zum
datengetriebenen Problemlösen im Informatikunterricht}, volume={76}, number={4},
journal={MNU journal}, publisher={Verlag Klaus Seeberger}, author={Höper, Lukas
and Schulte, Carsten}, year={2023}, pages={314–320} }'
chicago: 'Höper, Lukas, and Carsten Schulte. “Paradigmenwechsel vom klassischen
zum datengetriebenen Problemlösen im Informatikunterricht.” MNU journal
76, no. 4 (2023): 314–20.'
ieee: L. Höper and C. Schulte, “Paradigmenwechsel vom klassischen zum datengetriebenen
Problemlösen im Informatikunterricht,” MNU journal, vol. 76, no. 4, pp.
314–320, 2023.
mla: Höper, Lukas, and Carsten Schulte. “Paradigmenwechsel vom klassischen zum datengetriebenen
Problemlösen im Informatikunterricht.” MNU journal, vol. 76, no. 4, Verlag
Klaus Seeberger, 2023, pp. 314–20.
short: L. Höper, C. Schulte, MNU journal 76 (2023) 314–320.
date_created: 2023-07-28T05:58:37Z
date_updated: 2023-09-06T14:12:35Z
ddc:
- '370'
department:
- _id: '67'
file:
- access_level: open_access
content_type: application/pdf
creator: hoeper
date_created: 2023-07-28T05:56:19Z
date_updated: 2023-09-06T14:10:52Z
file_id: '46187'
file_name: MNU_journal_04_314-320.pdf
file_size: 615313
relation: main_file
file_date_updated: 2023-09-06T14:10:52Z
has_accepted_license: '1'
intvolume: ' 76'
issue: '4'
language:
- iso: ger
oa: '1'
page: 314-320
publication: MNU journal
publication_identifier:
issn:
- 0025-5866
publisher: Verlag Klaus Seeberger
related_material:
link:
- relation: other
url: https://www.mnu.de/zeitschriften/795-mnu-heft-2023-04
status: public
title: Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht
type: journal_article
user_id: '58041'
volume: 76
year: '2023'
...
---
_id: '35014'
author:
- first_name: Johannes
full_name: Blömer, Johannes
id: '23'
last_name: Blömer
- first_name: Jan
full_name: Bobolz, Jan
id: '27207'
last_name: Bobolz
- first_name: Henrik
full_name: Bröcher, Henrik
id: '41047'
last_name: Bröcher
citation:
ama: 'Blömer J, Bobolz J, Bröcher H. On the impossibility of surviving (iterated)
deletion of weakly dominated strategies in rational MPC. In: ; 2023.'
apa: Blömer, J., Bobolz, J., & Bröcher, H. (2023). On the impossibility of
surviving (iterated) deletion of weakly dominated strategies in rational MPC.
TCC 2023, Taipeh, Taiwan.
bibtex: '@inproceedings{Blömer_Bobolz_Bröcher_2023, title={On the impossibility
of surviving (iterated) deletion of weakly dominated strategies in rational MPC},
author={Blömer, Johannes and Bobolz, Jan and Bröcher, Henrik}, year={2023} }'
chicago: Blömer, Johannes, Jan Bobolz, and Henrik Bröcher. “On the Impossibility
of Surviving (Iterated) Deletion of Weakly Dominated Strategies in Rational MPC,”
2023.
ieee: J. Blömer, J. Bobolz, and H. Bröcher, “On the impossibility of surviving (iterated)
deletion of weakly dominated strategies in rational MPC,” presented at the TCC
2023, Taipeh, Taiwan, 2023.
mla: Blömer, Johannes, et al. On the Impossibility of Surviving (Iterated) Deletion
of Weakly Dominated Strategies in Rational MPC. 2023.
short: 'J. Blömer, J. Bobolz, H. Bröcher, in: 2023.'
conference:
end_date: 2023-12-02
location: Taipeh, Taiwan
name: TCC 2023
start_date: 2023-11-29
date_created: 2022-12-28T16:02:11Z
date_updated: 2023-09-07T10:01:00Z
department:
- _id: '34'
- _id: '64'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2022/1762
oa: '1'
project:
- _id: '1'
grant_number: '160364472'
name: 'SFB 901: SFB 901'
- _id: '4'
name: 'SFB 901 - C: SFB 901 - Project Area C'
- _id: '13'
name: 'SFB 901 - C1: SFB 901 - Subproject C1'
status: public
title: On the impossibility of surviving (iterated) deletion of weakly dominated strategies
in rational MPC
type: conference
user_id: '41047'
year: '2023'
...
---
_id: '43458'
author:
- first_name: Johannes
full_name: Blömer, Johannes
id: '23'
last_name: Blömer
- first_name: Jan
full_name: Bobolz, Jan
id: '27207'
last_name: Bobolz
- first_name: Laurens Alexander
full_name: Porzenheim, Laurens Alexander
id: '47434'
last_name: Porzenheim
citation:
ama: 'Blömer J, Bobolz J, Porzenheim LA. A Generic Construction of an Anonymous
Reputation System and Instantiations from Lattices. In: ; 2023.'
apa: Blömer, J., Bobolz, J., & Porzenheim, L. A. (2023). A Generic Construction
of an Anonymous Reputation System and Instantiations from Lattices. Asiacrypt
2023, Guangzhou, China.
bibtex: '@inproceedings{Blömer_Bobolz_Porzenheim_2023, title={A Generic Construction
of an Anonymous Reputation System and Instantiations from Lattices}, author={Blömer,
Johannes and Bobolz, Jan and Porzenheim, Laurens Alexander}, year={2023} }'
chicago: Blömer, Johannes, Jan Bobolz, and Laurens Alexander Porzenheim. “A Generic
Construction of an Anonymous Reputation System and Instantiations from Lattices,”
2023.
ieee: J. Blömer, J. Bobolz, and L. A. Porzenheim, “A Generic Construction of an
Anonymous Reputation System and Instantiations from Lattices,” presented at the
Asiacrypt 2023, Guangzhou, China, 2023.
mla: Blömer, Johannes, et al. A Generic Construction of an Anonymous Reputation
System and Instantiations from Lattices. 2023.
short: 'J. Blömer, J. Bobolz, L.A. Porzenheim, in: 2023.'
conference:
end_date: 2023-12-08
location: Guangzhou, China
name: Asiacrypt 2023
start_date: 2023-12-04
date_created: 2023-04-12T08:18:41Z
date_updated: 2023-09-07T09:53:26Z
department:
- _id: '64'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2023/464
oa: '1'
project:
- _id: '1'
grant_number: '160364472'
name: 'SFB 901: SFB 901'
- _id: '13'
name: 'SFB 901 - C1: SFB 901 - Subproject C1'
- _id: '4'
name: 'SFB 901 - C: SFB 901 - Project Area C'
status: public
title: A Generic Construction of an Anonymous Reputation System and Instantiations
from Lattices
type: conference
user_id: '47434'
year: '2023'
...
---
_id: '46815'
abstract:
- lang: eng
text: In this work, the influence of the filler–matrix adhesion on the tensile properties
of laser-sintered parts built with Polyamide 613 filled with glass beads was investigated.
For this purpose, dry blends of glass beads with and without organosilane coupling
agents and polyamide powder were prepared and processed into tensile specimens
on an EOS P396 laser sintering system. The samples were tested both in the dry
state and after an accelerated conditioning in a climate chamber. Furthermore,
finite element method (FEM) simulations were performed to model the extreme cases
of optimum adhesion and no adhesion. By correlating the tensile tests with the
simulation results and by analyzing the fracture surfaces, it was shown that the
filler–matrix adhesion is sufficient in the dry state but is strongly degraded
by conditioning. Even the presence of various organosilane thin films could not
prevent a strong deterioration of the filler–matrix adhesion and the associated
deterioration of the mechanical properties. Since a comparison with an injection-molded
sample of the same polymer filler combination shows identical behavior after conditioning,
it is assumed that this problem is not limited to additively manufactured parts.
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Maren
full_name: Kosanke, Maren
last_name: Kosanke
- first_name: Dennis
full_name: Meinderink, Dennis
last_name: Meinderink
- first_name: Vanessa
full_name: Neßlinger, Vanessa
last_name: Neßlinger
- first_name: Guido
full_name: Grundmeier, Guido
id: '194'
last_name: Grundmeier
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: Kletetzka I, Kosanke M, Meinderink D, Neßlinger V, Grundmeier G, Schmid H-J.
Influence of the filler–matrix adhesion and the effects of conditioning on tensile
properties of laser-sintered parts built with polyamide–glass bead dry blends.
Progress in Additive Manufacturing. Published online 2023. doi:10.1007/s40964-023-00501-z
apa: Kletetzka, I., Kosanke, M., Meinderink, D., Neßlinger, V., Grundmeier, G.,
& Schmid, H.-J. (2023). Influence of the filler–matrix adhesion and the effects
of conditioning on tensile properties of laser-sintered parts built with polyamide–glass
bead dry blends. Progress in Additive Manufacturing. https://doi.org/10.1007/s40964-023-00501-z
bibtex: '@article{Kletetzka_Kosanke_Meinderink_Neßlinger_Grundmeier_Schmid_2023,
title={Influence of the filler–matrix adhesion and the effects of conditioning
on tensile properties of laser-sintered parts built with polyamide–glass bead
dry blends}, DOI={10.1007/s40964-023-00501-z},
journal={Progress in Additive Manufacturing}, publisher={Springer Science and
Business Media LLC}, author={Kletetzka, Ivo and Kosanke, Maren and Meinderink,
Dennis and Neßlinger, Vanessa and Grundmeier, Guido and Schmid, Hans-Joachim},
year={2023} }'
chicago: Kletetzka, Ivo, Maren Kosanke, Dennis Meinderink, Vanessa Neßlinger, Guido
Grundmeier, and Hans-Joachim Schmid. “Influence of the Filler–Matrix Adhesion
and the Effects of Conditioning on Tensile Properties of Laser-Sintered Parts
Built with Polyamide–Glass Bead Dry Blends.” Progress in Additive Manufacturing,
2023. https://doi.org/10.1007/s40964-023-00501-z.
ieee: 'I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, and
H.-J. Schmid, “Influence of the filler–matrix adhesion and the effects of conditioning
on tensile properties of laser-sintered parts built with polyamide–glass bead
dry blends,” Progress in Additive Manufacturing, 2023, doi: 10.1007/s40964-023-00501-z.'
mla: Kletetzka, Ivo, et al. “Influence of the Filler–Matrix Adhesion and the Effects
of Conditioning on Tensile Properties of Laser-Sintered Parts Built with Polyamide–Glass
Bead Dry Blends.” Progress in Additive Manufacturing, Springer Science
and Business Media LLC, 2023, doi:10.1007/s40964-023-00501-z.
short: I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, H.-J.
Schmid, Progress in Additive Manufacturing (2023).
date_created: 2023-09-06T06:49:38Z
date_updated: 2023-09-07T11:51:01Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: 10.1007/s40964-023-00501-z
keyword:
- Industrial and Manufacturing Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://rdcu.be/dlqzG
oa: '1'
publication: Progress in Additive Manufacturing
publication_identifier:
issn:
- 2363-9512
- 2363-9520
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Influence of the filler–matrix adhesion and the effects of conditioning on
tensile properties of laser-sintered parts built with polyamide–glass bead dry blends
type: journal_article
user_id: '50769'
year: '2023'
...
---
_id: '43049'
abstract:
- lang: eng
text: "Abstract\r\n In this work, the influence
of the filler matrix adhesion on the tensile properties of laser-sintered parts
built with Polyamide 613 filled with glass beads was investigated. For this purpose,
dry blends of glass beads with and without organosilane coupling agents and polyamide
powder were prepared and processed into tensile specimens on an EOS P396. The
samples were tested both in the dry state and after an accelerated conditioning
in a climate chamber. Furthermore, FEM simulations were performed to model the
limiting cases of optimum adhesion and no adhesion. By correlating the tensile
tests with the simulation results and by analyzing the fracture surfaces, it was
shown that the filler matrix adhesion is sufficient in the dry state but is strongly
degraded by conditioning. Even the presence of various organosilane thin films
could not prevent a strong deterioration of the filler-matrix adhesion and the
associated deterioration of the mechanical properties. Since a comparison with
an injection molded sample of the same polymer filler combination shows identical
behavior after conditioning, it is assumed that this problem is not limited to
additively manufactured parts."
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
last_name: Kletetzka
- first_name: Maren
full_name: Kosanke, Maren
last_name: Kosanke
- first_name: Dennis
full_name: Meinderink, Dennis
last_name: Meinderink
- first_name: Vanessa
full_name: Neßlinger, Vanessa
last_name: Neßlinger
- first_name: Guido
full_name: Grundmeier, Guido
last_name: Grundmeier
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
last_name: Schmid
citation:
ama: Kletetzka I, Kosanke M, Meinderink D, Neßlinger V, Grundmeier G, Schmid H-J.
Influence of the filler matrix adhesion and the effects of conditioning on tensile
properties of laser sintered parts built with polyamide glass bead dry blends.
Published online 2023.
apa: Kletetzka, I., Kosanke, M., Meinderink, D., Neßlinger, V., Grundmeier, G.,
& Schmid, H.-J. (2023). Influence of the filler matrix adhesion and the
effects of conditioning on tensile properties of laser sintered parts built with
polyamide glass bead dry blends. Research Square Platform LLC.
bibtex: '@article{Kletetzka_Kosanke_Meinderink_Neßlinger_Grundmeier_Schmid_2023,
title={Influence of the filler matrix adhesion and the effects of conditioning
on tensile properties of laser sintered parts built with polyamide glass bead
dry blends}, publisher={Research Square Platform LLC}, author={Kletetzka, Ivo
and Kosanke, Maren and Meinderink, Dennis and Neßlinger, Vanessa and Grundmeier,
Guido and Schmid, Hans-Joachim}, year={2023} }'
chicago: Kletetzka, Ivo, Maren Kosanke, Dennis Meinderink, Vanessa Neßlinger, Guido
Grundmeier, and Hans-Joachim Schmid. “Influence of the Filler Matrix Adhesion
and the Effects of Conditioning on Tensile Properties of Laser Sintered Parts
Built with Polyamide Glass Bead Dry Blends.” Research Square Platform LLC, 2023.
ieee: I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, and
H.-J. Schmid, “Influence of the filler matrix adhesion and the effects of conditioning
on tensile properties of laser sintered parts built with polyamide glass bead
dry blends.” Research Square Platform LLC, 2023.
mla: Kletetzka, Ivo, et al. Influence of the Filler Matrix Adhesion and the Effects
of Conditioning on Tensile Properties of Laser Sintered Parts Built with Polyamide
Glass Bead Dry Blends. Research Square Platform LLC, 2023.
short: I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, H.-J.
Schmid, (2023).
date_created: 2023-03-20T09:13:23Z
date_updated: 2023-09-07T11:52:39Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researchsquare.com/article/rs-2664324/v1
oa: '1'
publication_status: published
publisher: Research Square Platform LLC
status: public
title: Influence of the filler matrix adhesion and the effects of conditioning on
tensile properties of laser sintered parts built with polyamide glass bead dry blends
type: preprint
user_id: '50769'
year: '2023'
...
---
_id: '43046'
abstract:
- lang: eng
text: In the laser sintering technology, the semi-crystalline polymer material is
exposed to elevated temperatures during processing, which leads to serious material
ageing for most materials. This has already been investigated intensively by various
authors. However, the ageing of the material at ambient temperatures during shelf
life has not been the focus so far. The need to analyse the shelf life can be
derived from an ecological and economic point of view. This work is focusing on
the shelf life of PA2200 (PA12). To reduce the potential influences of powder
production fluctuations, two different powder batches stored for 5.5 years and
6.5 years are investigated and compared to a reference powder produced 0.5 years
before these investigations. Multiple powder analyses and part characterisations
have been performed. A significant yellowing and molecular chain length reduction
can be derived from the measurement results. Whereas the influence on mechanical
part performance was minor, the parts built with the stored powders are more yellowish.
As it is most likely that this is due to the consumption of polyamide stabilisers,
it can be assumed that these parts will be subject to significantly faster ageing.
Therefore, it is still not recommended to use the stored powders for critical
parts or light intense and humid environments.
author:
- first_name: Sven Helge
full_name: Klippstein, Sven Helge
id: '71545'
last_name: Klippstein
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Ilknur
full_name: Sural, Ilknur
last_name: Sural
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: Klippstein SH, Kletetzka I, Sural I, Schmid H-J. Influence of a prolonged shelf
time on PA12 laser sintering powder and resulting part properties. The International
Journal of Advanced Manufacturing Technology . Published online 2023. doi:https://doi.org/10.1007/s00170-023-11243-1
apa: Klippstein, S. H., Kletetzka, I., Sural, I., & Schmid, H.-J. (2023). Influence
of a prolonged shelf time on PA12 laser sintering powder and resulting part properties.
The International Journal of Advanced Manufacturing Technology . https://doi.org/10.1007/s00170-023-11243-1
bibtex: '@article{Klippstein_Kletetzka_Sural_Schmid_2023, title={Influence of a
prolonged shelf time on PA12 laser sintering powder and resulting part properties},
DOI={https://doi.org/10.1007/s00170-023-11243-1},
journal={The International Journal of Advanced Manufacturing Technology }, publisher={Springer},
author={Klippstein, Sven Helge and Kletetzka, Ivo and Sural, Ilknur and Schmid,
Hans-Joachim}, year={2023} }'
chicago: Klippstein, Sven Helge, Ivo Kletetzka, Ilknur Sural, and Hans-Joachim Schmid.
“Influence of a Prolonged Shelf Time on PA12 Laser Sintering Powder and Resulting
Part Properties.” The International Journal of Advanced Manufacturing Technology
, 2023. https://doi.org/10.1007/s00170-023-11243-1.
ieee: 'S. H. Klippstein, I. Kletetzka, I. Sural, and H.-J. Schmid, “Influence of
a prolonged shelf time on PA12 laser sintering powder and resulting part properties,”
The International Journal of Advanced Manufacturing Technology , 2023,
doi: https://doi.org/10.1007/s00170-023-11243-1.'
mla: Klippstein, Sven Helge, et al. “Influence of a Prolonged Shelf Time on PA12
Laser Sintering Powder and Resulting Part Properties.” The International Journal
of Advanced Manufacturing Technology , Springer, 2023, doi:https://doi.org/10.1007/s00170-023-11243-1.
short: S.H. Klippstein, I. Kletetzka, I. Sural, H.-J. Schmid, The International
Journal of Advanced Manufacturing Technology (2023).
date_created: 2023-03-18T14:28:46Z
date_updated: 2023-09-07T11:57:59Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: https://doi.org/10.1007/s00170-023-11243-1
keyword:
- Selective laser sintering
- Shelf life
- Polyamide 12
- powder
- PA2200
- material ageing
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s00170-023-11243-1
oa: '1'
publication: 'The International Journal of Advanced Manufacturing Technology '
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Influence of a prolonged shelf time on PA12 laser sintering powder and resulting
part properties
type: journal_article
user_id: '50769'
year: '2023'
...
---
_id: '47155'
abstract:
- lang: eng
text: "»Über Geld spricht man nicht.« Diese Benimmregel erweist sich beim Blick
in die Ver-\r\ngangenheit als Illusion. Keineswegs war Geld grundsätzlich ein
Tabuthema zwischen-\r\nmenschlicher Kommunikation. Ganz im Gegenteil: Mit dem
Reden über Geld wird dieses\r\nmit Bedeutung aufgeladen. Die Autor*innen dieses
Themenheftes untersuch en Gelddis-\r\nkurse und die Zuschreibungen von Bedeutung
an Geld in der internationalen Geschichte."
article_type: original
author:
- first_name: Korinna
full_name: Schönhärl, Korinna
id: '89037'
last_name: Schönhärl
orcid: 0000-0002-7967-3261
- first_name: 'Frederike '
full_name: 'Schotters, Frederike '
last_name: Schotters
- first_name: Guido
full_name: Thiemeyer, Guido
last_name: Thiemeyer
citation:
ama: Schönhärl K, Schotters F, Thiemeyer G. Editorial. Werkstatt Geschichte.
2023;88.
apa: Schönhärl, K., Schotters, F., & Thiemeyer, G. (2023). Editorial. Werkstatt
Geschichte, 88.
bibtex: '@article{Schönhärl_Schotters_Thiemeyer_2023, title={Editorial}, volume={88},
journal={Werkstatt Geschichte}, author={Schönhärl, Korinna and Schotters, Frederike and
Thiemeyer, Guido}, year={2023} }'
chicago: Schönhärl, Korinna, Frederike Schotters, and Guido Thiemeyer. “Editorial.”
Werkstatt Geschichte 88 (2023).
ieee: K. Schönhärl, F. Schotters, and G. Thiemeyer, “Editorial,” Werkstatt Geschichte,
vol. 88, 2023.
mla: Schönhärl, Korinna, et al. “Editorial.” Werkstatt Geschichte, vol. 88,
2023.
short: K. Schönhärl, F. Schotters, G. Thiemeyer, Werkstatt Geschichte 88 (2023).
date_created: 2023-09-21T13:29:50Z
date_updated: 2023-09-21T13:30:14Z
ddc:
- '900'
department:
- _id: '445'
file:
- access_level: closed
content_type: application/pdf
creator: schoenha
date_created: 2023-09-21T13:25:41Z
date_updated: 2023-09-21T13:25:41Z
file_id: '47156'
file_name: Schönhärl Schotters Thiemeyer Editorial Reden über Geld.pdf
file_size: 275465
relation: main_file
success: 1
file_date_updated: 2023-09-21T13:25:41Z
has_accepted_license: '1'
intvolume: ' 88'
jel:
- N40
keyword:
- Financial History
- Discourse Analysis
- History of Money
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://werkstattgeschichte.de/wp-content/uploads/2023/09/WG88_009-014_EDITORIAL.pdf
oa: '1'
publication: Werkstatt Geschichte
publication_status: published
quality_controlled: '1'
status: public
title: Editorial
type: journal_article
user_id: '89037'
volume: 88
year: '2023'
...
---
_id: '46813'
abstract:
- lang: eng
text: Modelling of dynamic systems plays an important role in many engineering disciplines.
Two different approaches are physical modelling and data‐driven modelling, both
of which have their respective advantages and disadvantages. By combining these
two approaches, hybrid models can be created in which the respective disadvantages
are mitigated, with discrepancy models being a particular subclass. Here, the
basic system behaviour is described physically, that is, in the form of differential
equations. Inaccuracies resulting from insufficient modelling or numerics lead
to a discrepancy between the measurements and the model, which can be compensated
by a data‐driven error correction term. Since discrepancy methods still require
a large amount of measurement data, this paper investigates the extent to which
a single discrepancy model can be trained for a physical model with additional
parameter dependencies without the need for retraining. As an example, a damped
electromagnetic oscillating circuit is used. The physical model is realised by
a differential equation describing the electric current, considering only inductance
and capacitance; dissipation due to resistance is neglected. This creates a discrepancy
between measurement and model, which is corrected by a data‐driven model. In the
experiments, the inductance and the capacity are varied. It is found that the
same data‐driven model can only be used if additional parametric dependencies
in the data‐driven term are considered as well.
author:
- first_name: Meike Claudia
full_name: Wohlleben, Meike Claudia
id: '43991'
last_name: Wohlleben
orcid: 0009-0009-9767-7168
- first_name: Lars
full_name: Muth, Lars
id: '77313'
last_name: Muth
orcid: 0000-0002-2938-5616
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Wohlleben MC, Muth L, Peitz S, Sextro W. Transferability of a discrepancy
model for the dynamics of electromagnetic oscillating circuits. In: Proceedings
in Applied Mathematics and Mechanics. Wiley; 2023. doi:10.1002/pamm.202300039'
apa: Wohlleben, M. C., Muth, L., Peitz, S., & Sextro, W. (2023). Transferability
of a discrepancy model for the dynamics of electromagnetic oscillating circuits.
Proceedings in Applied Mathematics and Mechanics. https://doi.org/10.1002/pamm.202300039
bibtex: '@inproceedings{Wohlleben_Muth_Peitz_Sextro_2023, title={Transferability
of a discrepancy model for the dynamics of electromagnetic oscillating circuits},
DOI={10.1002/pamm.202300039},
booktitle={Proceedings in Applied Mathematics and Mechanics}, publisher={Wiley},
author={Wohlleben, Meike Claudia and Muth, Lars and Peitz, Sebastian and Sextro,
Walter}, year={2023} }'
chicago: Wohlleben, Meike Claudia, Lars Muth, Sebastian Peitz, and Walter Sextro.
“Transferability of a Discrepancy Model for the Dynamics of Electromagnetic Oscillating
Circuits.” In Proceedings in Applied Mathematics and Mechanics. Wiley,
2023. https://doi.org/10.1002/pamm.202300039.
ieee: 'M. C. Wohlleben, L. Muth, S. Peitz, and W. Sextro, “Transferability of a
discrepancy model for the dynamics of electromagnetic oscillating circuits,” 2023,
doi: 10.1002/pamm.202300039.'
mla: Wohlleben, Meike Claudia, et al. “Transferability of a Discrepancy Model for
the Dynamics of Electromagnetic Oscillating Circuits.” Proceedings in Applied
Mathematics and Mechanics, Wiley, 2023, doi:10.1002/pamm.202300039.
short: 'M.C. Wohlleben, L. Muth, S. Peitz, W. Sextro, in: Proceedings in Applied
Mathematics and Mechanics, Wiley, 2023.'
date_created: 2023-09-06T05:18:05Z
date_updated: 2023-09-21T14:47:20Z
department:
- _id: '655'
- _id: '151'
doi: 10.1002/pamm.202300039
keyword:
- Electrical and Electronic Engineering
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/epdf/10.1002/pamm.202300039
oa: '1'
publication: Proceedings in Applied Mathematics and Mechanics
publication_identifier:
issn:
- 1617-7061
- 1617-7061
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Transferability of a discrepancy model for the dynamics of electromagnetic
oscillating circuits
type: conference
user_id: '77313'
year: '2023'
...
---
_id: '46067'
abstract:
- lang: eng
text: 'The study investigates two different ways of guiding the addressee of
an explanation - an explainee, through action demonstration: contrastive and non-contrastive.
Their effect was tested on attention to specific action elements (goal) as well
as on event memory. In an eye-tracking experiment, participants were shown different
motion videos that were either contrastive or non-contrastive with respect to
the segments of movement presentation. Given that everyday action demonstration
is often multimodal, the stimuli were created with re- spect to their visual and
verbal presentation. For visual presentation, a video combined two movements in
a contrastive (e.g., Up-motion following a Down-motion) or non-contrastive way
(e.g., two Up-motions following each other). For verbal presentation, each video
was combined with a sequence of instruction descriptions in the form of negative
(i.e., contrastive) or assertive (i.e., non-contrastive) guidance. It was found
that a) attention to the event goal increased for this condition in the later
time window, and b) participants’ recall of the event was facilitated when a visually
contrastive motion was combined with a verbal contrast.
'
author:
- first_name: Amit
full_name: Singh, Amit
id: '91018'
last_name: Singh
orcid: 0000-0002-7789-1521
- first_name: Katharina J.
full_name: Rohlfing, Katharina J.
id: '50352'
last_name: Rohlfing
citation:
ama: 'Singh A, Rohlfing KJ. Contrastiveness in the context of action demonstration:
an eye-tracking study on its effects on action perception and action recall. In:
Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45).
Cognitive Science Society; 2023.'
apa: 'Singh, A., & Rohlfing, K. J. (2023). Contrastiveness in the context of
action demonstration: an eye-tracking study on its effects on action perception
and action recall. Proceedings of the Annual Meeting of the Cognitive Science
Society 45 (45). 45th Annual Conference of the Cognitive Science Society,
Sydney.'
bibtex: '@inproceedings{Singh_Rohlfing_2023, place={Sydney, Australia}, title={Contrastiveness
in the context of action demonstration: an eye-tracking study on its effects on
action perception and action recall}, booktitle={Proceedings of the Annual Meeting
of the Cognitive Science Society 45 (45)}, publisher={Cognitive Science Society},
author={Singh, Amit and Rohlfing, Katharina J.}, year={2023} }'
chicago: 'Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context
of Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception
and Action Recall.” In Proceedings of the Annual Meeting of the Cognitive Science
Society 45 (45). Sydney, Australia: Cognitive Science Society, 2023.'
ieee: 'A. Singh and K. J. Rohlfing, “Contrastiveness in the context of action demonstration:
an eye-tracking study on its effects on action perception and action recall,”
presented at the 45th Annual Conference of the Cognitive Science Society, Sydney,
2023.'
mla: 'Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context of
Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception
and Action Recall.” Proceedings of the Annual Meeting of the Cognitive Science
Society 45 (45), Cognitive Science Society, 2023.'
short: 'A. Singh, K.J. Rohlfing, in: Proceedings of the Annual Meeting of the Cognitive
Science Society 45 (45), Cognitive Science Society, Sydney, Australia, 2023.'
conference:
location: Sydney
name: 45th Annual Conference of the Cognitive Science Society
date_created: 2023-07-15T12:16:42Z
date_updated: 2023-09-27T13:51:42Z
department:
- _id: '749'
- _id: '660'
keyword:
- Attention
- negation
- contrastive guidance
- eye-movements
- action understanding
- event representation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://escholarship.org/uc/item/2w94t4cv
oa: '1'
place: Sydney, Australia
popular_science: '1'
project:
- _id: '115'
grant_number: '438445824'
name: 'TRR 318 - A05: TRR 318 - Echtzeitmessung der Aufmerksamkeit im Mensch-Roboter-Erklärdialog
(Teilprojekt A05)'
publication: Proceedings of the Annual Meeting of the Cognitive Science Society 45
(45)
publication_status: published
publisher: Cognitive Science Society
quality_controlled: '1'
related_material:
record:
- id: '46067'
relation: contains
status: public
status: public
title: 'Contrastiveness in the context of action demonstration: an eye-tracking study
on its effects on action perception and action recall'
type: conference
user_id: '91018'
year: '2023'
...
---
_id: '48676'
abstract:
- lang: ger
text: "Die charakteristische Verbzweitstellung des Deutschen und die sogenannte
Satzklammer führen bei der Sprachproduktion vieler Lernender zu klassischen Fehlern
und Frustration. Die Herausforderung für den fremdsprachlichen A1-/A2-Unterricht
besteht darin, das Phänomen der Verbstellung didaktisch so zu reduzieren, dass
der Gegenstand zwar nicht unzulässig vereinfacht wird, die DaF-Lernenden aber
ein leicht handhabbares Modell für die Sprachproduktion zur Verfügung haben, das
sie auch ohne umfassende linguistische Vorkenntnisse nutzen können. Im vorliegenden
Beitrag werden wir zeigen, wie eine Vermittlung dieses grammatischen Inhalts durch
Metaphorisierung und Visualisierung gelingen kann. Dazu untersuchen wir gängige
Metaphern, die in Lehrmaterial für A1-/A2-Niveau zur Einführung der Verbzweitstellung
und der Klammerstruktur verwendet werden, und geben einen Überblick über die dort
eingesetzten Visualisierungen, deren didaktischen Nutzen wir anhand eines von
uns erstellten Kriterienkatalogs analysieren. Hierzu fassen wir syntaktische Modelle
wie das Feldermodell, die Dependenz- und die Valenztheorie im\r\nKontext unseres
Interesses zusammen. Ziel unserer Untersuchung ist es, brauchbare und ausbaufähige
Modelle zu identifizieren."
article_type: original
author:
- first_name: Theresa
full_name: Lentfort, Theresa
id: '102760'
last_name: Lentfort
- first_name: Silke
full_name: Mentchen, Silke
last_name: Mentchen
citation:
ama: 'Lentfort T, Mentchen S. Show me the verb: Visualisierung von Wortstellungsregeln
im DaF-Unterricht für die Grundstufe. GfL. 2023;(2):72-97.'
apa: 'Lentfort, T., & Mentchen, S. (2023). Show me the verb: Visualisierung
von Wortstellungsregeln im DaF-Unterricht für die Grundstufe. GfL, 2,
72–97.'
bibtex: '@article{Lentfort_Mentchen_2023, title={Show me the verb: Visualisierung
von Wortstellungsregeln im DaF-Unterricht für die Grundstufe}, number={2}, journal={GfL},
author={Lentfort, Theresa and Mentchen, Silke}, year={2023}, pages={72–97} }'
chicago: 'Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung
von Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” GfL, no.
2 (2023): 72–97.'
ieee: 'T. Lentfort and S. Mentchen, “Show me the verb: Visualisierung von Wortstellungsregeln
im DaF-Unterricht für die Grundstufe,” GfL, no. 2, pp. 72–97, 2023.'
mla: 'Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung von
Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” GfL, no. 2,
2023, pp. 72–97.'
short: T. Lentfort, S. Mentchen, GfL (2023) 72–97.
date_created: 2023-11-07T16:28:21Z
date_updated: 2024-10-14T07:51:15Z
issue: '2'
keyword:
- A1-/A2-Unterricht
- Verbstellung
- Satzklammer
- Metapher
- Visualisierung
- Lerntheorie
- Kognitive Linguistik
- Lehrmaterial
language:
- iso: ger
main_file_link:
- open_access: '1'
url: http://gfl-journal.de/wp-content/uploads/2024/07/20230206-Lentfort-Mentchen.pdf
oa: '1'
page: 72 - 97
publication: GfL
publication_status: published
quality_controlled: '1'
status: public
title: 'Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht
für die Grundstufe'
type: journal_article
user_id: '102760'
year: '2023'
...
---
_id: '49955'
author:
- first_name: Marco
full_name: Silvestri, Marco
id: '47652'
last_name: Silvestri
citation:
ama: 'Silvestri M. Cities Made of Silver. The Impact of Migration Processes and
Architectural Theory on the Urban Planning of Early Modern Mining Towns. In: Mattos
Avolese C, ed. Motion: Migrations. Proceedings of the 35th World Congress
of Art History. ; 2023:1120-1140.'
apa: 'Silvestri, M. (2023). Cities Made of Silver. The Impact of Migration Processes
and Architectural Theory on the Urban Planning of Early Modern Mining Towns. In
C. Mattos Avolese (Ed.), Motion: Migrations. Proceedings of the 35th World
Congress of Art History (pp. 1120–1140).'
bibtex: '@inbook{Silvestri_2023, place={São Paulo}, title={Cities Made of Silver.
The Impact of Migration Processes and Architectural Theory on the Urban Planning
of Early Modern Mining Towns}, booktitle={Motion: Migrations. Proceedings of the
35th World Congress of Art History}, author={Silvestri, Marco}, editor={Mattos
Avolese , Claudia }, year={2023}, pages={1120–1140} }'
chicago: 'Silvestri, Marco. “Cities Made of Silver. The Impact of Migration Processes
and Architectural Theory on the Urban Planning of Early Modern Mining Towns.”
In Motion: Migrations. Proceedings of the 35th World Congress of Art History,
edited by Claudia Mattos Avolese , 1120–40. São Paulo, 2023.'
ieee: 'M. Silvestri, “Cities Made of Silver. The Impact of Migration Processes and
Architectural Theory on the Urban Planning of Early Modern Mining Towns,” in Motion:
Migrations. Proceedings of the 35th World Congress of Art History, C. Mattos
Avolese , Ed. São Paulo, 2023, pp. 1120–1140.'
mla: 'Silvestri, Marco. “Cities Made of Silver. The Impact of Migration Processes
and Architectural Theory on the Urban Planning of Early Modern Mining Towns.”
Motion: Migrations. Proceedings of the 35th World Congress of Art History,
edited by Claudia Mattos Avolese , 2023, pp. 1120–40.'
short: 'M. Silvestri, in: C. Mattos Avolese (Ed.), Motion: Migrations. Proceedings
of the 35th World Congress of Art History, São Paulo, 2023, pp. 1120–1140.'
date_created: 2023-12-20T14:54:32Z
date_updated: 2024-10-16T10:23:36Z
editor:
- first_name: 'Claudia '
full_name: 'Mattos Avolese , Claudia '
last_name: 'Mattos Avolese '
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://www.ciha.org/content/motion-migrations-proceedings-35th-world-congress-art-history
oa: '1'
page: 1120-1140
place: São Paulo
publication: 'Motion: Migrations. Proceedings of the 35th World Congress of Art History'
publication_identifier:
isbn:
- 978-85-93921-02-5
status: public
title: Cities Made of Silver. The Impact of Migration Processes and Architectural
Theory on the Urban Planning of Early Modern Mining Towns
type: book_chapter
user_id: '61731'
year: '2023'
...