---
_id: '52217'
abstract:
- lang: eng
text: AbstractPolycarbonate (PC) is an amorphous
polymer that is an extremely robust material with a high tenacity, and thus suitable
for a lightweight construction with glass‐like transparency. Due to these advantageous
properties, PC is often used in industry for example in medical devices, automotive
headlamps, sporting equipment, electronics, and a variety of other products. PC
is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable
material models have to take into account the various resulting experimental effects.
For those reasons, we investigate PC specimens under uniaxial and biaxial loading
by using different stretch rates and loading scenarios. In addition to that, we
propose methods for optical measurement of local stretches to obtain the approximated
local true stress. In future work, the displacement fields and the resulting reaction
forces will be used for parameter identification of constitutive equations.
author:
- first_name: Ayoub
full_name: Hamdoun, Ayoub
last_name: Hamdoun
- first_name: Rolf
full_name: Mahnken, Rolf
id: '335'
last_name: Mahnken
citation:
ama: Hamdoun A, Mahnken R. Experimental investigations of uniaxial and biaxial cold
stretching within PC‐films and bars using optical measurements. PAMM. Published
online 2024. doi:10.1002/pamm.202300114
apa: Hamdoun, A., & Mahnken, R. (2024). Experimental investigations of uniaxial
and biaxial cold stretching within PC‐films and bars using optical measurements.
PAMM. https://doi.org/10.1002/pamm.202300114
bibtex: '@article{Hamdoun_Mahnken_2024, title={Experimental investigations of uniaxial
and biaxial cold stretching within PC‐films and bars using optical measurements},
DOI={10.1002/pamm.202300114},
journal={PAMM}, publisher={Wiley}, author={Hamdoun, Ayoub and Mahnken, Rolf},
year={2024} }'
chicago: Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial
and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.”
PAMM, 2024. https://doi.org/10.1002/pamm.202300114.
ieee: 'A. Hamdoun and R. Mahnken, “Experimental investigations of uniaxial and biaxial
cold stretching within PC‐films and bars using optical measurements,” PAMM,
2024, doi: 10.1002/pamm.202300114.'
mla: Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial
and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.”
PAMM, Wiley, 2024, doi:10.1002/pamm.202300114.
short: A. Hamdoun, R. Mahnken, PAMM (2024).
date_created: 2024-02-29T13:53:13Z
date_updated: 2024-02-29T13:58:38Z
department:
- _id: '9'
- _id: '154'
- _id: '321'
doi: 10.1002/pamm.202300114
keyword:
- Electrical and Electronic Engineering
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: PAMM
publication_identifier:
issn:
- 1617-7061
- 1617-7061
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Experimental investigations of uniaxial and biaxial cold stretching within
PC‐films and bars using optical measurements
type: journal_article
user_id: '335'
year: '2024'
...
---
_id: '52537'
author:
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Felix
full_name: Wiebicke, Felix
last_name: Wiebicke
- first_name: Ilja
full_name: Koch, Ilja
last_name: Koch
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Julian
full_name: Gilich, Julian
id: '44391'
last_name: Gilich
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Gröger B, Wiebicke F, Koch I, Gude M, Gilich J, Meschut G. Experimentelle
und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen
im Fertigungsprozess. In: 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik.
; 2024.'
apa: 'Gröger, B., Wiebicke, F., Koch, I., Gude, M., Gilich, J., & Meschut, G.
(2024). Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen
Wärmeleitstoffen im Fertigungsprozess. 24. Kolloquium: Gemeinsame Forschung
in Der Klebtechnik. 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik,
Köln.'
bibtex: '@inproceedings{Gröger_Wiebicke_Koch_Gude_Gilich_Meschut_2024, title={Experimentelle
und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen
im Fertigungsprozess}, booktitle={24. Kolloquium: Gemeinsame Forschung in der
Klebtechnik}, author={Gröger, Benjamin and Wiebicke, Felix and Koch, Ilja and
Gude, Maik and Gilich, Julian and Meschut, Gerson}, year={2024} }'
chicago: 'Gröger, Benjamin, Felix Wiebicke, Ilja Koch, Maik Gude, Julian Gilich,
and Gerson Meschut. “Experimentelle Und Numerische Analyse Des Fließverhaltens
von Hochviskosen Wärmeleitstoffen Im Fertigungsprozess.” In 24. Kolloquium:
Gemeinsame Forschung in Der Klebtechnik, 2024.'
ieee: 'B. Gröger, F. Wiebicke, I. Koch, M. Gude, J. Gilich, and G. Meschut, “Experimentelle
und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen
im Fertigungsprozess,” presented at the 24. Kolloquium: Gemeinsame Forschung in
der Klebtechnik, Köln, 2024.'
mla: 'Gröger, Benjamin, et al. “Experimentelle Und Numerische Analyse Des Fließverhaltens
von Hochviskosen Wärmeleitstoffen Im Fertigungsprozess.” 24. Kolloquium: Gemeinsame
Forschung in Der Klebtechnik, 2024.'
short: 'B. Gröger, F. Wiebicke, I. Koch, M. Gude, J. Gilich, G. Meschut, in: 24.
Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2024.'
conference:
end_date: 2024-02-28
location: Köln
name: '24. Kolloquium: Gemeinsame Forschung in der Klebtechnik'
start_date: 2024-02-27
date_created: 2024-03-13T14:42:08Z
date_updated: 2024-03-13T14:44:56Z
department:
- _id: '157'
language:
- iso: eng
publication: '24. Kolloquium: Gemeinsame Forschung in der Klebtechnik'
status: public
title: Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen
Wärmeleitstoffen im Fertigungsprozess
type: conference_abstract
user_id: '44391'
year: '2024'
...
---
_id: '52504'
author:
- first_name: Patrick
full_name: Franke, Patrick
id: '93922'
last_name: Franke
citation:
ama: 'Franke P. Experimentelle Untersuchung und Modellierung des flüssigseitigen
Stofftransports in Anstaupackungen. In: ; 2024.'
apa: Franke, P. (2024). Experimentelle Untersuchung und Modellierung des flüssigseitigen
Stofftransports in Anstaupackungen.
bibtex: '@inproceedings{Franke_2024, place={Konferenz DECHEMA/VDI - Fluidverfahrenstechnik
2024 an der Ruhr-Universität Bochum}, title={Experimentelle Untersuchung und Modellierung
des flüssigseitigen Stofftransports in Anstaupackungen}, author={Franke, Patrick},
year={2024} }'
chicago: Franke, Patrick. “Experimentelle Untersuchung Und Modellierung Des Flüssigseitigen
Stofftransports in Anstaupackungen.” Konferenz DECHEMA/VDI - Fluidverfahrenstechnik
2024 an der Ruhr-Universität Bochum, 2024.
ieee: P. Franke, “Experimentelle Untersuchung und Modellierung des flüssigseitigen
Stofftransports in Anstaupackungen,” 2024.
mla: Franke, Patrick. Experimentelle Untersuchung Und Modellierung Des Flüssigseitigen
Stofftransports in Anstaupackungen. 2024.
short: 'P. Franke, in: Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der
Ruhr-Universität Bochum, 2024.'
date_created: 2024-03-12T09:21:06Z
date_updated: 2024-03-12T12:36:29Z
language:
- iso: eng
place: Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der Ruhr-Universität
Bochum
status: public
title: Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports
in Anstaupackungen
type: conference_abstract
user_id: '93922'
year: '2024'
...
---
_id: '48632'
abstract:
- lang: eng
text: Digital Servitization is one of the significant trends affecting the manufacturing
industry. Companies try to tackle challenges regarding their differentiation and
profitability using digital services. One specific type of digital services are
smart services, which are digital services built on data from smart products.
Introducing these kinds of offerings into the portfolio of manufacturing companies
is not trivial. Moreover, they require conscious action to align all relevant
capabilities to realize the respective business goals. However, what capabilities
are generally relevant for smart services remains opaque. We conducted a systematic
literature review to identify them and extended the results through an interview
study. Our analysis results in 78 capabilities clustered among 12 principles and
six dimensions. These results provide significant support for the smart service
transformation of manufacturing companies and for structuring the research field
of smart services.
author:
- first_name: Christian
full_name: Koldewey, Christian
id: '43136'
last_name: Koldewey
orcid: https://orcid.org/0000-0001-7992-6399
- first_name: Timm
full_name: Fichtler, Timm
id: '66731'
last_name: Fichtler
orcid: https://orcid.org/0000-0001-6034-4399
- first_name: Michel
full_name: Scholtysik, Michel
id: '50562'
last_name: Scholtysik
- first_name: Jan
full_name: Biehler, Jan
last_name: Biehler
- first_name: Nick
full_name: Schreiner, Nick
last_name: Schreiner
- first_name: Franziska
full_name: Sommer, Franziska
last_name: Sommer
- first_name: Maximilian
full_name: Schacht, Maximilian
last_name: Schacht
- first_name: Jonas
full_name: Kaufmann, Jonas
last_name: Kaufmann
- first_name: Martin
full_name: Rabe, Martin
last_name: Rabe
- first_name: Joachim
full_name: Sedlmeier, Joachim
last_name: Sedlmeier
- first_name: Roman
full_name: Dumitrescu, Roman
id: '16190'
last_name: Dumitrescu
citation:
ama: 'Koldewey C, Fichtler T, Scholtysik M, et al. Exploring Capabilities for the
Smart Service Transformation in Manufacturing: Insights from Theory and Practice.
In: ; 2024.'
apa: 'Koldewey, C., Fichtler, T., Scholtysik, M., Biehler, J., Schreiner, N., Sommer,
F., Schacht, M., Kaufmann, J., Rabe, M., Sedlmeier, J., & Dumitrescu, R. (2024).
Exploring Capabilities for the Smart Service Transformation in Manufacturing:
Insights from Theory and Practice. Hawaii International Conference on System
Sciences, Hawaii.'
bibtex: '@inproceedings{Koldewey_Fichtler_Scholtysik_Biehler_Schreiner_Sommer_Schacht_Kaufmann_Rabe_Sedlmeier_et
al._2024, title={Exploring Capabilities for the Smart Service Transformation in
Manufacturing: Insights from Theory and Practice}, author={Koldewey, Christian
and Fichtler, Timm and Scholtysik, Michel and Biehler, Jan and Schreiner, Nick
and Sommer, Franziska and Schacht, Maximilian and Kaufmann, Jonas and Rabe, Martin
and Sedlmeier, Joachim and et al.}, year={2024} }'
chicago: 'Koldewey, Christian, Timm Fichtler, Michel Scholtysik, Jan Biehler, Nick
Schreiner, Franziska Sommer, Maximilian Schacht, et al. “Exploring Capabilities
for the Smart Service Transformation in Manufacturing: Insights from Theory and
Practice,” 2024.'
ieee: 'C. Koldewey et al., “Exploring Capabilities for the Smart Service
Transformation in Manufacturing: Insights from Theory and Practice,” presented
at the Hawaii International Conference on System Sciences, Hawaii, 2024.'
mla: 'Koldewey, Christian, et al. Exploring Capabilities for the Smart Service
Transformation in Manufacturing: Insights from Theory and Practice. 2024.'
short: 'C. Koldewey, T. Fichtler, M. Scholtysik, J. Biehler, N. Schreiner, F. Sommer,
M. Schacht, J. Kaufmann, M. Rabe, J. Sedlmeier, R. Dumitrescu, in: 2024.'
conference:
end_date: 2024-01-06
location: Hawaii
name: Hawaii International Conference on System Sciences
start_date: 2024-01-03
date_created: 2023-11-06T15:31:32Z
date_updated: 2023-11-06T15:40:33Z
department:
- _id: '563'
- _id: '241'
keyword:
- Digital Servitization
- Transformation
- Capabilities
- Maturity
- Smart Services
language:
- iso: eng
status: public
title: 'Exploring Capabilities for the Smart Service Transformation in Manufacturing:
Insights from Theory and Practice'
type: conference
user_id: '66731'
year: '2024'
...
---
_id: '51160'
abstract:
- lang: eng
text: "We rigorously derive novel and sharp finite-data error bounds for highly\r\nsample-efficient
Extended Dynamic Mode Decomposition (EDMD) for both i.i.d. and\r\nergodic sampling.
In particular, we show all results in a very general setting\r\nremoving most
of the typically imposed assumptions such that, among others,\r\ndiscrete- and
continuous-time stochastic processes as well as nonlinear partial\r\ndifferential
equations are contained in the considered system class. Besides\r\nshowing an
exponential rate for i.i.d. sampling, we prove, to the best of our\r\nknowledge,
the first superlinear convergence rates for ergodic sampling of\r\ndeterministic
systems. We verify sharpness of the derived error bounds by\r\nconducting numerical
simulations for highly-complex applications from molecular\r\ndynamics and chaotic
flame propagation."
author:
- first_name: Friedrich M.
full_name: Philipp, Friedrich M.
last_name: Philipp
- first_name: Manuel
full_name: Schaller, Manuel
last_name: Schaller
- first_name: Septimus
full_name: Boshoff, Septimus
last_name: Boshoff
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
- first_name: Feliks
full_name: Nüske, Feliks
last_name: Nüske
- first_name: Karl
full_name: Worthmann, Karl
last_name: Worthmann
citation:
ama: 'Philipp FM, Schaller M, Boshoff S, Peitz S, Nüske F, Worthmann K. Extended
Dynamic Mode Decomposition: Sharp bounds on the sample efficiency. arXiv:240202494.
Published online 2024.'
apa: 'Philipp, F. M., Schaller, M., Boshoff, S., Peitz, S., Nüske, F., & Worthmann,
K. (2024). Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency.
In arXiv:2402.02494.'
bibtex: '@article{Philipp_Schaller_Boshoff_Peitz_Nüske_Worthmann_2024, title={Extended
Dynamic Mode Decomposition: Sharp bounds on the sample efficiency}, journal={arXiv:2402.02494},
author={Philipp, Friedrich M. and Schaller, Manuel and Boshoff, Septimus and Peitz,
Sebastian and Nüske, Feliks and Worthmann, Karl}, year={2024} }'
chicago: 'Philipp, Friedrich M., Manuel Schaller, Septimus Boshoff, Sebastian Peitz,
Feliks Nüske, and Karl Worthmann. “Extended Dynamic Mode Decomposition: Sharp
Bounds on the Sample Efficiency.” ArXiv:2402.02494, 2024.'
ieee: 'F. M. Philipp, M. Schaller, S. Boshoff, S. Peitz, F. Nüske, and K. Worthmann,
“Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency,”
arXiv:2402.02494. 2024.'
mla: 'Philipp, Friedrich M., et al. “Extended Dynamic Mode Decomposition: Sharp
Bounds on the Sample Efficiency.” ArXiv:2402.02494, 2024.'
short: F.M. Philipp, M. Schaller, S. Boshoff, S. Peitz, F. Nüske, K. Worthmann,
ArXiv:2402.02494 (2024).
date_created: 2024-02-06T08:52:21Z
date_updated: 2024-02-06T08:52:44Z
department:
- _id: '655'
external_id:
arxiv:
- '2402.02494'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2402.02494.pdf
oa: '1'
publication: arXiv:2402.02494
status: public
title: 'Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency'
type: preprint
user_id: '47427'
year: '2024'
...
---
_id: '50841'
article_type: original
author:
- first_name: 'Giordano '
full_name: 'Moretto, Giordano '
last_name: Moretto
- first_name: 'Nicolas '
full_name: 'Schnell, Nicolas '
last_name: Schnell
- first_name: 'Jonathan '
full_name: 'Frey, Jonathan '
last_name: Frey
- first_name: Yasin
full_name: Karakaya, Yasin
id: '95069'
last_name: Karakaya
- first_name: Alois
full_name: Amstutz, Alois
last_name: Amstutz
- first_name: Moritz
full_name: Diehl, Moritz
last_name: Diehl
- first_name: Tina
full_name: Kasper, Tina
id: '94562'
last_name: Kasper
orcid: '0000-0003-3993-5316 '
- first_name: Christopher
full_name: Onder, Christopher
last_name: Onder
citation:
ama: Moretto G, Schnell N, Frey J, et al. Fast model-based calibration of multiple
injections for a CI engine using nonlinear optimal control. Control Engineering
Practice. 2024;145:105848. doi:10.1016/j.conengprac.2024.105848
apa: Moretto, G., Schnell, N., Frey, J., Karakaya, Y., Amstutz, A., Diehl, M., Kasper,
T., & Onder, C. (2024). Fast model-based calibration of multiple injections
for a CI engine using nonlinear optimal control. Control Engineering Practice,
145, 105848. https://doi.org/10.1016/j.conengprac.2024.105848
bibtex: '@article{Moretto_Schnell_Frey_Karakaya_Amstutz_Diehl_Kasper_Onder_2024,
title={Fast model-based calibration of multiple injections for a CI engine using
nonlinear optimal control}, volume={145}, DOI={10.1016/j.conengprac.2024.105848},
journal={Control Engineering Practice}, author={Moretto, Giordano and Schnell,
Nicolas and Frey, Jonathan and Karakaya, Yasin and Amstutz, Alois and Diehl,
Moritz and Kasper, Tina and Onder, Christopher}, year={2024}, pages={105848} }'
chicago: 'Moretto, Giordano , Nicolas Schnell, Jonathan Frey, Yasin Karakaya,
Alois Amstutz, Moritz Diehl, Tina Kasper, and Christopher Onder. “Fast Model-Based
Calibration of Multiple Injections for a CI Engine Using Nonlinear Optimal Control.”
Control Engineering Practice 145 (2024): 105848. https://doi.org/10.1016/j.conengprac.2024.105848.'
ieee: 'G. Moretto et al., “Fast model-based calibration of multiple injections
for a CI engine using nonlinear optimal control,” Control Engineering Practice,
vol. 145, p. 105848, 2024, doi: 10.1016/j.conengprac.2024.105848.'
mla: Moretto, Giordano, et al. “Fast Model-Based Calibration of Multiple Injections
for a CI Engine Using Nonlinear Optimal Control.” Control Engineering Practice,
vol. 145, 2024, p. 105848, doi:10.1016/j.conengprac.2024.105848.
short: G. Moretto, N. Schnell, J. Frey, Y. Karakaya, A. Amstutz, M. Diehl, T. Kasper,
C. Onder, Control Engineering Practice 145 (2024) 105848.
date_created: 2024-01-25T16:23:36Z
date_updated: 2024-01-30T10:26:44Z
department:
- _id: '728'
doi: 10.1016/j.conengprac.2024.105848
intvolume: ' 145'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S096706612400008X
oa: '1'
page: '105848'
publication: Control Engineering Practice
publication_status: published
quality_controlled: '1'
status: public
title: Fast model-based calibration of multiple injections for a CI engine using nonlinear
optimal control
type: journal_article
user_id: '95069'
volume: 145
year: '2024'
...
---
_id: '46019'
abstract:
- lang: eng
text: We derive efficient algorithms to compute weakly Pareto optimal solutions
for smooth, convex and unconstrained multiobjective optimization problems in general
Hilbert spaces. To this end, we define a novel inertial gradient-like dynamical
system in the multiobjective setting, which trajectories converge weakly to Pareto
optimal solutions. Discretization of this system yields an inertial multiobjective
algorithm which generates sequences that converge weakly to Pareto optimal solutions.
We employ Nesterov acceleration to define an algorithm with an improved convergence
rate compared to the plain multiobjective steepest descent method (Algorithm 1).
A further improvement in terms of efficiency is achieved by avoiding the solution
of a quadratic subproblem to compute a common step direction for all objective
functions, which is usually required in first-order methods. Using a different
discretization of our inertial gradient-like dynamical system, we obtain an accelerated
multiobjective gradient method that does not require the solution of a subproblem
in each step (Algorithm 2). While this algorithm does not converge in general,
it yields good results on test problems while being faster than standard steepest
descent.
author:
- first_name: Konstantin
full_name: Sonntag, Konstantin
id: '56399'
last_name: Sonntag
orcid: https://orcid.org/0000-0003-3384-3496
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: 0000-0002-3389-793X
citation:
ama: Sonntag K, Peitz S. Fast Multiobjective Gradient Methods with Nesterov Acceleration
via Inertial Gradient-Like Systems. Journal of Optimization Theory and Applications.
Published online 2024. doi:10.1007/s10957-024-02389-3
apa: Sonntag, K., & Peitz, S. (2024). Fast Multiobjective Gradient Methods with
Nesterov Acceleration via Inertial Gradient-Like Systems. Journal of Optimization
Theory and Applications. https://doi.org/10.1007/s10957-024-02389-3
bibtex: '@article{Sonntag_Peitz_2024, title={Fast Multiobjective Gradient Methods
with Nesterov Acceleration via Inertial Gradient-Like Systems}, DOI={10.1007/s10957-024-02389-3},
journal={Journal of Optimization Theory and Applications}, publisher={Springer},
author={Sonntag, Konstantin and Peitz, Sebastian}, year={2024} }'
chicago: Sonntag, Konstantin, and Sebastian Peitz. “Fast Multiobjective Gradient
Methods with Nesterov Acceleration via Inertial Gradient-Like Systems.” Journal
of Optimization Theory and Applications, 2024. https://doi.org/10.1007/s10957-024-02389-3.
ieee: 'K. Sonntag and S. Peitz, “Fast Multiobjective Gradient Methods with Nesterov
Acceleration via Inertial Gradient-Like Systems,” Journal of Optimization Theory
and Applications, 2024, doi: 10.1007/s10957-024-02389-3.'
mla: Sonntag, Konstantin, and Sebastian Peitz. “Fast Multiobjective Gradient Methods
with Nesterov Acceleration via Inertial Gradient-Like Systems.” Journal of
Optimization Theory and Applications, Springer, 2024, doi:10.1007/s10957-024-02389-3.
short: K. Sonntag, S. Peitz, Journal of Optimization Theory and Applications (2024).
date_created: 2023-07-12T06:35:58Z
date_updated: 2024-02-21T10:13:33Z
department:
- _id: '101'
- _id: '655'
doi: 10.1007/s10957-024-02389-3
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/content/pdf/10.1007/s10957-024-02389-3.pdf
oa: '1'
publication: Journal of Optimization Theory and Applications
publication_status: published
publisher: Springer
status: public
title: Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial
Gradient-Like Systems
type: journal_article
user_id: '56399'
year: '2024'
...
---
_id: '52691'
abstract:
- lang: eng
text: "We prove Feynman-Kac formulas for the semigroups generated by selfadjoint\r\noperators
in a class containing Fr\\\"ohlich Hamiltonians known from solid state\r\nphysics.
The latter model multi-polarons, i.e., a fixed number of quantum\r\nmechanical
electrons moving in a polarizable crystal and interacting with the\r\nquantized
phonon field generated by the crystal's vibrational modes. Both the\r\nelectrons
and phonons can be confined to suitable open subsets of Euclidean\r\nspace. We
also include possibly very singular magnetic vector potentials and\r\nelectrostatic
potentials. Our Feynman-Kac formulas comprise Fock space\r\noperator-valued multiplicative
functionals and can be applied to every vector\r\nin the underlying Hilbert space.
In comparison to the renormalized Nelson\r\nmodel, for which analogous Feynman-Kac
formulas are known, the analysis of the\r\ncreation and annihilation terms in
the multiplicative functionals requires\r\nnovel ideas to overcome difficulties
caused by the phonon dispersion relation\r\nbeing constant. Getting these terms
under control and generalizing other\r\nconstruction steps so as to cover confined
systems are the main achievements of\r\nthis article."
author:
- first_name: Benjamin
full_name: Hinrichs, Benjamin
id: '99427'
last_name: Hinrichs
orcid: 0000-0001-9074-1205
- first_name: Oliver
full_name: Matte, Oliver
last_name: Matte
citation:
ama: Hinrichs B, Matte O. Feynman-Kac formulas for semigroups generated by multi-polaron
Hamiltonians in magnetic fields and on general domains. arXiv:240312147.
Published online 2024.
apa: Hinrichs, B., & Matte, O. (2024). Feynman-Kac formulas for semigroups generated
by multi-polaron Hamiltonians in magnetic fields and on general domains. In arXiv:2403.12147.
bibtex: '@article{Hinrichs_Matte_2024, title={Feynman-Kac formulas for semigroups
generated by multi-polaron Hamiltonians in magnetic fields and on general domains},
journal={arXiv:2403.12147}, author={Hinrichs, Benjamin and Matte, Oliver}, year={2024}
}'
chicago: Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formulas for Semigroups
Generated by Multi-Polaron Hamiltonians in Magnetic Fields and on General Domains.”
ArXiv:2403.12147, 2024.
ieee: B. Hinrichs and O. Matte, “Feynman-Kac formulas for semigroups generated by
multi-polaron Hamiltonians in magnetic fields and on general domains,” arXiv:2403.12147.
2024.
mla: Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formulas for Semigroups
Generated by Multi-Polaron Hamiltonians in Magnetic Fields and on General Domains.”
ArXiv:2403.12147, 2024.
short: B. Hinrichs, O. Matte, ArXiv:2403.12147 (2024).
date_created: 2024-03-20T14:56:05Z
date_updated: 2024-03-20T14:56:50Z
department:
- _id: '799'
external_id:
arxiv:
- '2403.12147'
language:
- iso: eng
publication: arXiv:2403.12147
status: public
title: Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians
in magnetic fields and on general domains
type: preprint
user_id: '99427'
year: '2024'
...
---
_id: '51764'
citation:
ama: Adelmann R, Matzner T, Miggelbrink M, Schulz C, eds. Filter – Medienwissenschaftliche
Symposien der DFG. MediaRep
apa: Adelmann, R., Matzner, T., Miggelbrink, M., & Schulz, C. (Eds.). (n.d.).
Filter – Medienwissenschaftliche Symposien der DFG. MediaRep.
bibtex: '@book{Adelmann_Matzner_Miggelbrink_Schulz, place={Marburg }, title={Filter
– Medienwissenschaftliche Symposien der DFG}, publisher={MediaRep} }'
chicago: 'Adelmann, Ralf , Tobias Matzner, Monique Miggelbrink, and Christian Schulz,
eds. Filter – Medienwissenschaftliche Symposien der DFG. Marburg : MediaRep,
n.d.'
ieee: 'R. Adelmann, T. Matzner, M. Miggelbrink, and C. Schulz, Eds., Filter –
Medienwissenschaftliche Symposien der DFG. Marburg : MediaRep.'
mla: Adelmann, Ralf, et al., editors. Filter – Medienwissenschaftliche Symposien
der DFG. MediaRep.
short: R. Adelmann, T. Matzner, M. Miggelbrink, C. Schulz, eds., Filter – Medienwissenschaftliche
Symposien der DFG, MediaRep, Marburg , n.d.
date_created: 2024-02-22T15:06:56Z
date_updated: 2024-02-23T07:31:25Z
department:
- _id: '757'
editor:
- first_name: 'Ralf '
full_name: 'Adelmann, Ralf '
last_name: Adelmann
- first_name: Tobias
full_name: Matzner, Tobias
last_name: Matzner
- first_name: 'Monique '
full_name: 'Miggelbrink, Monique '
last_name: Miggelbrink
- first_name: 'Christian '
full_name: 'Schulz, Christian '
last_name: Schulz
language:
- iso: ger
place: 'Marburg '
publication_status: inpress
publisher: MediaRep
status: public
title: Filter – Medienwissenschaftliche Symposien der DFG
type: book_editor
user_id: '72684'
year: '2024'
...
---
_id: '52328'
abstract:
- lang: ger
text: In der Professionalisierung von Lehrkräften ist die Selbst-reflexion eine
wesentliche Voraussetzung, da sie zentral für die Weiterentwicklung der eigenen
Kompetenzen ist. Daraus ergibt sich die Notwendigkeit, bereits in der ersten Phase
der Lehrkräftebildung die Selbstreflexion und die Weiterentwicklungsorientierung
zu fördern. Hierzu sind auf Grund des sozialen Settings gezielte reflexionsorientierte
Workshops chancenreich. Um die Effekte von reflexionsorientierten Workshops und
dabei den Zusammenhang zwischen der Selbst-reflexion und der Weiterentwicklungsorientierung
zu überprüfen, wurden anhand einer Stichprobe von N = 646 Lehramtsstudierenden
die Entwicklung der Selbst-reflexion und Weiterentwicklungsorientierung beim Besuch
von Workshops zu überfachlichen Kompetenzen untersucht. Die Datenerhebung erfolgte
vor, direkt nach und erneut vier bis sechs Wochen nach den reflexionsorientierten
Workshops mittels eines Fragebogens. Durch Varianzanalysen können in Bezug auf
die Selbst-reflexion direkt nach den Workshops signifikante Effekte sowie eine
konstante Ausprägung vier bis sechs Wochen später nachgewiesen werden. Weiterhin
konnte ein signifikanter Anstieg bei der Weiterentwicklungsorientierung über die
drei Messzeitpunkte verzeichnet werden. Ebenso zeigte sich ein positiver Effekt
der Selbstreflexion auf den Anstieg der Weiterentwicklungsorientierung.
author:
- first_name: Sabrina M
full_name: Kleine, Sabrina M
last_name: Kleine
- first_name: Sylvia
full_name: Sohlau, Sylvia
last_name: Sohlau
- first_name: Andreas
full_name: Seifert, Andreas
id: '693'
last_name: Seifert
- first_name: Heike M.
full_name: Buhl, Heike M.
id: '27152'
last_name: Buhl
citation:
ama: Kleine SM, Sohlau S, Seifert A, Buhl HM. Förderung der Selbstreflexion und
Weiterentwicklungsorientierung durch reflexionsorientierte Workshops im Lehramtsstudium.
Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung
und Diskussion. 2024;7(1). doi:10.11576/HLZ-6392
apa: Kleine, S. M., Sohlau, S., Seifert, A., & Buhl, H. M. (2024). Förderung
der Selbstreflexion und Weiterentwicklungsorientierung durch reflexionsorientierte
Workshops im Lehramtsstudium. Herausforderung Lehrer*innenbildung - Zeitschrift
zur Konzeption, Gestaltung und Diskussion, 7(1). https://doi.org/10.11576/HLZ-6392
bibtex: '@article{Kleine_Sohlau_Seifert_Buhl_2024, title={Förderung der Selbstreflexion
und Weiterentwicklungsorientierung durch reflexionsorientierte Workshops im Lehramtsstudium},
volume={7}, DOI={10.11576/HLZ-6392},
number={1}, journal={Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption,
Gestaltung und Diskussion}, author={Kleine, Sabrina M and Sohlau, Sylvia and Seifert,
Andreas and Buhl, Heike M.}, year={2024} }'
chicago: Kleine, Sabrina M, Sylvia Sohlau, Andreas Seifert, and Heike M. Buhl. “Förderung
der Selbstreflexion und Weiterentwicklungsorientierung durch reflexionsorientierte
Workshops im Lehramtsstudium.” Herausforderung Lehrer*innenbildung - Zeitschrift
zur Konzeption, Gestaltung und Diskussion 7, no. 1 (2024). https://doi.org/10.11576/HLZ-6392.
ieee: 'S. M. Kleine, S. Sohlau, A. Seifert, and H. M. Buhl, “Förderung der Selbstreflexion
und Weiterentwicklungsorientierung durch reflexionsorientierte Workshops im Lehramtsstudium,”
Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung
und Diskussion, vol. 7, no. 1, 2024, doi: 10.11576/HLZ-6392.'
mla: Kleine, Sabrina M., et al. “Förderung der Selbstreflexion und Weiterentwicklungsorientierung
durch reflexionsorientierte Workshops im Lehramtsstudium.” Herausforderung
Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung und Diskussion,
vol. 7, no. 1, 2024, doi:10.11576/HLZ-6392.
short: S.M. Kleine, S. Sohlau, A. Seifert, H.M. Buhl, Herausforderung Lehrer*innenbildung
- Zeitschrift zur Konzeption, Gestaltung und Diskussion 7 (2024).
date_created: 2024-03-06T09:26:12Z
date_updated: 2024-03-06T09:31:43Z
doi: 10.11576/HLZ-6392
intvolume: ' 7'
issue: '1'
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://www.herausforderung-lehrerinnenbildung.de/index.php/hlz/article/view/6392/6311
oa: '1'
publication: Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung
und Diskussion
publication_status: published
quality_controlled: '1'
status: public
title: Förderung der Selbstreflexion und Weiterentwicklungsorientierung durch reflexionsorientierte
Workshops im Lehramtsstudium
type: journal_article
user_id: '66133'
volume: 7
year: '2024'
...