---
_id: '24017'
abstract:
- lang: eng
  text: In developing complex technical systems, requirements are subject to continuous
    change. Systematic and holistic change impact analysis and proactive measures
    are required for reducing the number of requirement changes and their negative
    impact. There is no method to analyse the holistic impact of a requirement change
    in the context of developing complex technical systems. Holistic analysis requires
    to consider the local effects of requirement changes as well as effects from change
    propagation. To develop an approach for holistic change propagation and impact
    analysis, twelve performance goals are defined. Those are derived from a state
    of research analysis as well as an industry workshop. A three-step method is proposed.
    Firstly, requirement dependencies that cause change propagation are detected.
    Secondly, critical requirements are automatically identified based on a Page Rank
    algorithm. Thirdly, change impact of critical requirements is analysed based on
    a guideline. Validation proves that ten goals are fulfilled and two are partly
    fulfilled. The method addresses major shortcomings of preceding research and enables
    sound decision making for development engineers both before a change occurs and
    during decision process on a change request. This helps to reduce negative change
    impact in development projects and the risk of project failure.
author:
- first_name: Iris
  full_name: Gräßler, Iris
  id: '47565'
  last_name: Gräßler
  orcid: 0000-0001-5765-971X
- first_name: Christian
  full_name: Oleff, Christian
  id: '41188'
  last_name: Oleff
- first_name: Daniel
  full_name: Preuß, Daniel
  id: '40253'
  last_name: Preuß
citation:
  ama: 'Gräßler I, Oleff C, Preuß D. Holistic change propagation and impact analysis
    in requirements management. In: Wagner B, Wilson J, eds. ; 2021.'
  apa: Gräßler, I., Oleff, C., &#38; Preuß, D. (2021). <i>Holistic change propagation
    and impact analysis in requirements management</i> (B. Wagner &#38; J. Wilson,
    Eds.).
  bibtex: '@inproceedings{Gräßler_Oleff_Preuß_2021, title={Holistic change propagation
    and impact analysis in requirements management}, author={Gräßler, Iris and Oleff,
    Christian and Preuß, Daniel}, editor={Wagner, Beverly and Wilson, Juliette}, year={2021}
    }'
  chicago: Gräßler, Iris, Christian Oleff, and Daniel Preuß. “Holistic Change Propagation
    and Impact Analysis in Requirements Management.” edited by Beverly Wagner and
    Juliette Wilson, 2021.
  ieee: I. Gräßler, C. Oleff, and D. Preuß, “Holistic change propagation and impact
    analysis in requirements management,” Strathclyde/Glasgow, 2021.
  mla: Gräßler, Iris, et al. <i>Holistic Change Propagation and Impact Analysis in
    Requirements Management</i>. Edited by Beverly Wagner and Juliette Wilson, 2021.
  short: 'I. Gräßler, C. Oleff, D. Preuß, in: B. Wagner, J. Wilson (Eds.), 2021.'
conference:
  end_date: 2021-07-08
  location: Strathclyde/Glasgow
  name: R&D Management Conference
  start_date: 2021-07-07
date_created: 2021-09-09T11:49:38Z
date_updated: 2022-11-11T12:20:12Z
ddc:
- '620'
department:
- _id: '152'
editor:
- first_name: Beverly
  full_name: Wagner, Beverly
  last_name: Wagner
- first_name: Juliette
  full_name: Wilson, Juliette
  last_name: Wilson
file:
- access_level: open_access
  content_type: application/pdf
  creator: dpreuss
  date_created: 2022-04-19T07:59:22Z
  date_updated: 2022-11-11T12:20:11Z
  file_id: '30912'
  file_name: RD_2021_HolisticChangePropagation_ShortCompetitivePaper_graessler.pdf
  file_size: 571976
  relation: main_file
file_date_updated: 2022-11-11T12:20:11Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
status: public
title: Holistic change propagation and impact analysis in requirements management
type: conference
user_id: '40253'
year: '2021'
...
---
_id: '26645'
author:
- first_name: Jan
  full_name: Bobolz, Jan
  id: '27207'
  last_name: Bobolz
- first_name: Fabian
  full_name: Eidens, Fabian
  id: '25078'
  last_name: Eidens
- first_name: Raphael
  full_name: Heitjohann, Raphael
  last_name: Heitjohann
- first_name: Jeremy
  full_name: Fell, Jeremy
  last_name: Fell
citation:
  ama: 'Bobolz J, Eidens F, Heitjohann R, Fell J. Cryptimeleon: A Library for Fast
    Prototyping of Privacy-Preserving Cryptographic Schemes. Published online 2021.'
  apa: 'Bobolz, J., Eidens, F., Heitjohann, R., &#38; Fell, J. (2021). <i>Cryptimeleon:
    A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes</i>.
    IACR eprint.'
  bibtex: '@article{Bobolz_Eidens_Heitjohann_Fell_2021, title={Cryptimeleon: A Library
    for Fast Prototyping of Privacy-Preserving Cryptographic Schemes}, publisher={IACR
    eprint}, author={Bobolz, Jan and Eidens, Fabian and Heitjohann, Raphael and Fell,
    Jeremy}, year={2021} }'
  chicago: 'Bobolz, Jan, Fabian Eidens, Raphael Heitjohann, and Jeremy Fell. “Cryptimeleon:
    A Library for Fast Prototyping of Privacy-Preserving Cryptographic Schemes.” IACR
    eprint, 2021.'
  ieee: 'J. Bobolz, F. Eidens, R. Heitjohann, and J. Fell, “Cryptimeleon: A Library
    for Fast Prototyping of Privacy-Preserving Cryptographic Schemes.” IACR eprint,
    2021.'
  mla: 'Bobolz, Jan, et al. <i>Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving
    Cryptographic Schemes</i>. IACR eprint, 2021.'
  short: J. Bobolz, F. Eidens, R. Heitjohann, J. Fell, (2021).
date_created: 2021-10-21T07:51:32Z
date_updated: 2022-11-18T09:38:42Z
department:
- _id: '64'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2021/961
oa: '1'
project:
- _id: '4'
  name: SFB 901 - Project Area C
- _id: '82'
  name: SFB 901 - Project Area T
- _id: '84'
  name: SFB 901 -Subproject T2
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '13'
  name: 'SFB 901 - C1: SFB 901 - Subproject C1'
publisher: IACR eprint
status: public
title: 'Cryptimeleon: A Library for Fast Prototyping of Privacy-Preserving Cryptographic
  Schemes'
type: preprint
user_id: '477'
year: '2021'
...
---
_id: '28196'
abstract:
- lang: eng
  text: We show that narrow trenches in a high-contrast silicon-photonics slab can
    act as lossless power dividers for semi-guided waves. Reflectance and transmittance
    can be easily configured by selecting the trench width. At sufficiently high angles
    of incidence, the devices are lossless, apart from material attenuation and scattering
    due to surface roughness. We numerically simulate a series of devices within the
    full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as
    well as for excitation by focused Gaussian wave bundles. Straightforward cascading
    of the trenches leads to concepts for 1×M-power dividers and a polarization beam
    splitter.
author:
- first_name: Manfred
  full_name: Hammer, Manfred
  id: '48077'
  last_name: Hammer
  orcid: 0000-0002-6331-9348
- first_name: Lena
  full_name: Ebers, Lena
  id: '40428'
  last_name: Ebers
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
citation:
  ama: Hammer M, Ebers L, Förstner J. Configurable lossless broadband beam splitters
    for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>. 2021;4(12):3081.
    doi:<a href="https://doi.org/10.1364/osac.437549">10.1364/osac.437549</a>
  apa: Hammer, M., Ebers, L., &#38; Förstner, J. (2021). Configurable lossless broadband
    beam splitters for semi-guided waves in integrated silicon photonics. <i>OSA Continuum</i>,
    <i>4</i>(12), 3081. <a href="https://doi.org/10.1364/osac.437549">https://doi.org/10.1364/osac.437549</a>
  bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband
    beam splitters for semi-guided waves in integrated silicon photonics}, volume={4},
    DOI={<a href="https://doi.org/10.1364/osac.437549">10.1364/osac.437549</a>}, number={12},
    journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner,
    Jens}, year={2021}, pages={3081} }'
  chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless
    Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.”
    <i>OSA Continuum</i> 4, no. 12 (2021): 3081. <a href="https://doi.org/10.1364/osac.437549">https://doi.org/10.1364/osac.437549</a>.'
  ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam
    splitters for semi-guided waves in integrated silicon photonics,” <i>OSA Continuum</i>,
    vol. 4, no. 12, p. 3081, 2021, doi: <a href="https://doi.org/10.1364/osac.437549">10.1364/osac.437549</a>.'
  mla: Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for
    Semi-Guided Waves in Integrated Silicon Photonics.” <i>OSA Continuum</i>, vol.
    4, no. 12, 2021, p. 3081, doi:<a href="https://doi.org/10.1364/osac.437549">10.1364/osac.437549</a>.
  short: M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081.
date_created: 2021-11-30T20:04:57Z
date_updated: 2022-11-18T09:58:03Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/osac.437549
file:
- access_level: open_access
  content_type: application/pdf
  creator: fossie
  date_created: 2021-11-30T20:07:53Z
  date_updated: 2021-11-30T20:19:15Z
  file_id: '28197'
  file_name: 2021-11 Hammer - OSA Continuum - Trenches.pdf
  file_size: 6618403
  relation: main_file
file_date_updated: 2021-11-30T20:19:15Z
has_accepted_license: '1'
intvolume: '         4'
issue: '12'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '3081'
project:
- _id: '53'
  name: TRR 142
- _id: '56'
  name: TRR 142 - Project Area C
publication: OSA Continuum
publication_identifier:
  issn:
  - 2578-7519
publication_status: published
status: public
title: Configurable lossless broadband beam splitters for semi-guided waves in integrated
  silicon photonics
type: journal_article
user_id: '477'
volume: 4
year: '2021'
...
---
_id: '33854'
abstract:
- lang: eng
  text: "Macrodiversity is a key technique to increase the capacity of mobile networks.
    It can be realized using coordinated multipoint (CoMP), simultaneously connecting
    users to multiple overlapping cells. Selecting which users to serve by how many
    and which cells is NP-hard but needs to happen continuously in real time as users
    move and channel state changes. Existing approaches often require strict assumptions
    about or perfect knowledge of the underlying radio system, its resource allocation
    scheme, or user movements, none of which is readily available in practice.\r\n\r\nInstead,
    we propose three novel self-learning and self-adapting approaches using model-free
    deep reinforcement learning (DRL): DeepCoMP, DD-CoMP, and D3-CoMP. DeepCoMP leverages
    central observations and control of all users to select cells almost optimally.
    DD-CoMP and D3-CoMP use multi-agent DRL, which allows distributed, robust, and
    highly scalable coordination. All three approaches learn from experience and self-adapt
    to varying scenarios, reaching 2x higher Quality of Experience than other approaches.
    They have very few built-in assumptions and do not need prior system knowledge,
    making them more robust to change and better applicable in practice than existing
    approaches."
author:
- first_name: Stefan Balthasar
  full_name: Schneider, Stefan Balthasar
  id: '35343'
  last_name: Schneider
  orcid: 0000-0001-8210-4011
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
- first_name: Ramin
  full_name: Khalili, Ramin
  last_name: Khalili
- first_name: Artur
  full_name: Hecker, Artur
  last_name: Hecker
citation:
  ama: 'Schneider SB, Karl H, Khalili R, Hecker A. <i>DeepCoMP: Coordinated Multipoint
    Using Multi-Agent Deep Reinforcement Learning</i>.; 2021.'
  apa: 'Schneider, S. B., Karl, H., Khalili, R., &#38; Hecker, A. (2021). <i>DeepCoMP:
    Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>.'
  bibtex: '@book{Schneider_Karl_Khalili_Hecker_2021, title={DeepCoMP: Coordinated
    Multipoint Using Multi-Agent Deep Reinforcement Learning}, author={Schneider,
    Stefan Balthasar and Karl, Holger and Khalili, Ramin and Hecker, Artur}, year={2021}
    }'
  chicago: 'Schneider, Stefan Balthasar, Holger Karl, Ramin Khalili, and Artur Hecker.
    <i>DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning</i>,
    2021.'
  ieee: 'S. B. Schneider, H. Karl, R. Khalili, and A. Hecker, <i>DeepCoMP: Coordinated
    Multipoint Using Multi-Agent Deep Reinforcement Learning</i>. 2021.'
  mla: 'Schneider, Stefan Balthasar, et al. <i>DeepCoMP: Coordinated Multipoint Using
    Multi-Agent Deep Reinforcement Learning</i>. 2021.'
  short: 'S.B. Schneider, H. Karl, R. Khalili, A. Hecker, DeepCoMP: Coordinated Multipoint
    Using Multi-Agent Deep Reinforcement Learning, 2021.'
date_created: 2022-10-20T16:44:19Z
date_updated: 2022-11-18T09:59:27Z
ddc:
- '004'
department:
- _id: '75'
file:
- access_level: open_access
  content_type: application/pdf
  creator: stschn
  date_created: 2022-10-20T16:41:10Z
  date_updated: 2022-10-20T16:41:10Z
  file_id: '33855'
  file_name: preprint.pdf
  file_size: 2521656
  relation: main_file
file_date_updated: 2022-10-20T16:41:10Z
has_accepted_license: '1'
keyword:
- mobility management
- coordinated multipoint
- CoMP
- cell selection
- resource management
- reinforcement learning
- multi agent
- MARL
- self-learning
- self-adaptation
- QoE
language:
- iso: eng
oa: '1'
project:
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '1'
  name: 'SFB 901: SFB 901'
status: public
title: 'DeepCoMP: Coordinated Multipoint Using Multi-Agent Deep Reinforcement Learning'
type: working_paper
user_id: '477'
year: '2021'
...
---
_id: '21265'
abstract:
- lang: eng
  text: <jats:p>Fast-growing energy demand of the world makes the researchers focus
    on finding new energy sources or optimizing already-developed approaches. For
    an efficient use of solar and wind energy in an energy system, correct design
    and sizing of a power system is of high importance and improving or optimizing
    the process of data obtaining for this purpose leads to higher performance and
    lower cost per unit of energy. It is essential to have the most precise possible
    estimation of solar and wind energy potential and other local weather parameters
    in order to fully feed the demand and avoid extra costs. There are various methods
    for obtaining local data, such as local measurements, official organizational
    data, satellite obtained, and reanalysis data. In this paper, the Modern-Era Retrospective
    analysis for Research and Applications dataset version 2 (MERRA-2) dataset provided
    by NASA is introduced and its performance is evaluated by comparison to various
    locally measured datasets offered by meteorological institutions such as Meteonorm
    and Deutscher Wetterdienst (DWD, or Germany’s National Meteorological Service)
    around the world. After comparison, correlation coefficients from 0.95 to 0.99
    are observed for monthly global horizontal irradiance values. In the case of air
    temperature, correlation coefficients of 0.99 and for wind speed from 0.81 to
    0.99 are observed. High correlation with ground measurements and relatively low
    errors are confirmed, especially for irradiance and temperature values, that makes
    MERRA-2 a valuable dataset, considering its world coverage and availability.</jats:p>
article_number: '882'
article_type: original
author:
- first_name: Arash
  full_name: Khatibi, Arash
  id: '43538'
  last_name: Khatibi
- first_name: Stefan
  full_name: Krauter, Stefan
  id: '28836'
  last_name: Krauter
  orcid: 0000-0002-3594-260X
citation:
  ama: Khatibi A, Krauter S. Validation and Performance of Satellite Meteorological
    Dataset MERRA-2 for Solar and Wind Applications. <i>Energies</i>. 2021;14(4).
    doi:<a href="https://doi.org/10.3390/en14040882">10.3390/en14040882</a>
  apa: Khatibi, A., &#38; Krauter, S. (2021). Validation and Performance of Satellite
    Meteorological Dataset MERRA-2 for Solar and Wind Applications. <i>Energies</i>,
    <i>14</i>(4), Article 882. <a href="https://doi.org/10.3390/en14040882">https://doi.org/10.3390/en14040882</a>
  bibtex: '@article{Khatibi_Krauter_2021, title={Validation and Performance of Satellite
    Meteorological Dataset MERRA-2 for Solar and Wind Applications}, volume={14},
    DOI={<a href="https://doi.org/10.3390/en14040882">10.3390/en14040882</a>}, number={4882},
    journal={Energies}, publisher={MDPI}, author={Khatibi, Arash and Krauter, Stefan},
    year={2021} }'
  chicago: Khatibi, Arash, and Stefan Krauter. “Validation and Performance of Satellite
    Meteorological Dataset MERRA-2 for Solar and Wind Applications.” <i>Energies</i>
    14, no. 4 (2021). <a href="https://doi.org/10.3390/en14040882">https://doi.org/10.3390/en14040882</a>.
  ieee: 'A. Khatibi and S. Krauter, “Validation and Performance of Satellite Meteorological
    Dataset MERRA-2 for Solar and Wind Applications,” <i>Energies</i>, vol. 14, no.
    4, Art. no. 882, 2021, doi: <a href="https://doi.org/10.3390/en14040882">10.3390/en14040882</a>.'
  mla: Khatibi, Arash, and Stefan Krauter. “Validation and Performance of Satellite
    Meteorological Dataset MERRA-2 for Solar and Wind Applications.” <i>Energies</i>,
    vol. 14, no. 4, 882, MDPI, 2021, doi:<a href="https://doi.org/10.3390/en14040882">10.3390/en14040882</a>.
  short: A. Khatibi, S. Krauter, Energies 14 (2021).
date_created: 2021-02-23T10:18:05Z
date_updated: 2022-01-06T13:37:34Z
ddc:
- '620'
department:
- _id: '53'
doi: 10.3390/en14040882
file:
- access_level: closed
  content_type: application/pdf
  creator: krauter
  date_created: 2022-01-06T13:33:09Z
  date_updated: 2022-01-06T13:33:09Z
  file_id: '29177'
  file_name: energies-14-00882 Khatibi Krauter MERRA 2.pdf
  file_size: 3837152
  relation: main_file
  success: 1
file_date_updated: 2022-01-06T13:33:09Z
has_accepted_license: '1'
intvolume: '        14'
issue: '4'
keyword:
- Solar irradiance
- MERRA 2
- Meteonorm
- DWD
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/1996-1073/14/4/882/htm
oa: '1'
publication: Energies
publication_identifier:
  issn:
  - 1996-1073
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: Validation and Performance of Satellite Meteorological Dataset MERRA-2 for
  Solar and Wind Applications
type: journal_article
user_id: '28836'
volume: 14
year: '2021'
...
---
_id: '26987'
abstract:
- lang: eng
  text: Optical metasurfaces are perfect candidates for the phase and amplitude modulation
    of light, featuring an excellent basis for holographic applications. In this work,
    we present a dual amplitude holographic scheme based on the photon sieve principle,
    which is then combined with a phase hologram by utilizing the Pancharatnam–Berry
    phase. We demonstrate that two types of apertures, rectangular and square shapes
    in a gold film filled with silicon nanoantennas are sufficient to create two amplitude
    holograms at two different wavelengths in the visible, multiplexed with an additional
    phase-only hologram. The nanoantennas are tailored to adjust the spectral transmittance
    of the apertures, enabling the wavelength sensitivity. The phase-only hologram
    is implemented by utilizing the anisotropic rectangular structure. Interestingly,
    such three holograms have quantitative mathematical correlations with each other.
    Thus, the flexibility of polarization and wavelength channels can be utilized
    with custom-tailored features to achieve such amplitude and phase holography simultaneously
    without sacrificing any space-bandwidth product. The present scheme has the potential
    to store different pieces of information which can be displayed separately by
    switching the wavelength or the polarization state of the reading light beam.
author:
- first_name: Daniel
  full_name: Frese, Daniel
  last_name: Frese
- first_name: Basudeb
  full_name: Sain, Basudeb
  last_name: Sain
- first_name: Hongqiang
  full_name: Zhou, Hongqiang
  last_name: Zhou
- first_name: Yongtian
  full_name: Wang, Yongtian
  last_name: Wang
- first_name: Lingling
  full_name: Huang, Lingling
  last_name: Huang
- first_name: Thomas
  full_name: Zentgraf, Thomas
  id: '30525'
  last_name: Zentgraf
  orcid: 0000-0002-8662-1101
citation:
  ama: Frese D, Sain B, Zhou H, Wang Y, Huang L, Zentgraf T. A wavelength and polarization
    selective photon sieve for holographic applications. <i>Nanophotonics</i>. 2021;10(18):4543-4550.
    doi:<a href="https://doi.org/10.1515/nanoph-2021-0440">10.1515/nanoph-2021-0440</a>
  apa: Frese, D., Sain, B., Zhou, H., Wang, Y., Huang, L., &#38; Zentgraf, T. (2021).
    A wavelength and polarization selective photon sieve for holographic applications.
    <i>Nanophotonics</i>, <i>10</i>(18), 4543–4550. <a href="https://doi.org/10.1515/nanoph-2021-0440">https://doi.org/10.1515/nanoph-2021-0440</a>
  bibtex: '@article{Frese_Sain_Zhou_Wang_Huang_Zentgraf_2021, title={A wavelength
    and polarization selective photon sieve for holographic applications}, volume={10},
    DOI={<a href="https://doi.org/10.1515/nanoph-2021-0440">10.1515/nanoph-2021-0440</a>},
    number={18}, journal={Nanophotonics}, publisher={De Gruyter}, author={Frese, Daniel
    and Sain, Basudeb and Zhou, Hongqiang and Wang, Yongtian and Huang, Lingling and
    Zentgraf, Thomas}, year={2021}, pages={4543–4550} }'
  chicago: 'Frese, Daniel, Basudeb Sain, Hongqiang Zhou, Yongtian Wang, Lingling Huang,
    and Thomas Zentgraf. “A Wavelength and Polarization Selective Photon Sieve for
    Holographic Applications.” <i>Nanophotonics</i> 10, no. 18 (2021): 4543–50. <a
    href="https://doi.org/10.1515/nanoph-2021-0440">https://doi.org/10.1515/nanoph-2021-0440</a>.'
  ieee: 'D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, and T. Zentgraf, “A wavelength
    and polarization selective photon sieve for holographic applications,” <i>Nanophotonics</i>,
    vol. 10, no. 18, pp. 4543–4550, 2021, doi: <a href="https://doi.org/10.1515/nanoph-2021-0440">10.1515/nanoph-2021-0440</a>.'
  mla: Frese, Daniel, et al. “A Wavelength and Polarization Selective Photon Sieve
    for Holographic Applications.” <i>Nanophotonics</i>, vol. 10, no. 18, De Gruyter,
    2021, pp. 4543–50, doi:<a href="https://doi.org/10.1515/nanoph-2021-0440">10.1515/nanoph-2021-0440</a>.
  short: D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, T. Zentgraf, Nanophotonics
    10 (2021) 4543–4550.
date_created: 2021-10-28T07:15:52Z
date_updated: 2022-01-20T07:33:16Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1515/nanoph-2021-0440
funded_apc: '1'
intvolume: '        10'
issue: '18'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0440/html
oa: '1'
page: 4543-4550
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '65'
  name: TRR 142 - Subproject A8
publication: Nanophotonics
publication_identifier:
  issn:
  - 2192-8614
  - 2192-8606
publication_status: published
publisher: De Gruyter
quality_controlled: '1'
status: public
title: A wavelength and polarization selective photon sieve for holographic applications
type: journal_article
user_id: '30525'
volume: 10
year: '2021'
...
---
_id: '16294'
abstract:
- lang: eng
  text: "Model predictive control is a prominent approach to construct a feedback\r\ncontrol
    loop for dynamical systems. Due to real-time constraints, the major\r\nchallenge
    in MPC is to solve model-based optimal control problems in a very\r\nshort amount
    of time. For linear-quadratic problems, Bemporad et al. have\r\nproposed an explicit
    formulation where the underlying optimization problems are\r\nsolved a priori
    in an offline phase. In this article, we present an extension\r\nof this concept
    in two significant ways. We consider nonlinear problems and -\r\nmore importantly
    - problems with multiple conflicting objective functions. In\r\nthe offline phase,
    we build a library of Pareto optimal solutions from which we\r\nthen obtain a
    valid compromise solution in the online phase according to a\r\ndecision maker's
    preference. Since the standard multi-parametric programming\r\napproach is no
    longer valid in this situation, we instead use interpolation\r\nbetween different
    entries of the library. To reduce the number of problems that\r\nhave to be solved
    in the offline phase, we exploit symmetries in the dynamical\r\nsystem and the
    corresponding multiobjective optimal control problem. The\r\nresults are verified
    using two different examples from autonomous driving."
author:
- first_name: Sina
  full_name: Ober-Blöbaum, Sina
  id: '16494'
  last_name: Ober-Blöbaum
- first_name: Sebastian
  full_name: Peitz, Sebastian
  id: '47427'
  last_name: Peitz
  orcid: https://orcid.org/0000-0002-3389-793X
citation:
  ama: Ober-Blöbaum S, Peitz S. Explicit multiobjective model predictive control for
    nonlinear systems  with symmetries. <i>International Journal of Robust and Nonlinear
    Control</i>. 2021;31(2):380-403. doi:<a href="https://doi.org/10.1002/rnc.5281">10.1002/rnc.5281</a>
  apa: Ober-Blöbaum, S., &#38; Peitz, S. (2021). Explicit multiobjective model predictive
    control for nonlinear systems  with symmetries. <i>International Journal of Robust
    and Nonlinear Control</i>, <i>31(2)</i>, 380–403. <a href="https://doi.org/10.1002/rnc.5281">https://doi.org/10.1002/rnc.5281</a>
  bibtex: '@article{Ober-Blöbaum_Peitz_2021, title={Explicit multiobjective model
    predictive control for nonlinear systems  with symmetries}, volume={31(2)}, DOI={<a
    href="https://doi.org/10.1002/rnc.5281">10.1002/rnc.5281</a>}, journal={International
    Journal of Robust and Nonlinear Control}, author={Ober-Blöbaum, Sina and Peitz,
    Sebastian}, year={2021}, pages={380–403} }'
  chicago: 'Ober-Blöbaum, Sina, and Sebastian Peitz. “Explicit Multiobjective Model
    Predictive Control for Nonlinear Systems  with Symmetries.” <i>International Journal
    of Robust and Nonlinear Control</i> 31(2) (2021): 380–403. <a href="https://doi.org/10.1002/rnc.5281">https://doi.org/10.1002/rnc.5281</a>.'
  ieee: 'S. Ober-Blöbaum and S. Peitz, “Explicit multiobjective model predictive control
    for nonlinear systems  with symmetries,” <i>International Journal of Robust and
    Nonlinear Control</i>, vol. 31(2), pp. 380–403, 2021, doi: <a href="https://doi.org/10.1002/rnc.5281">10.1002/rnc.5281</a>.'
  mla: Ober-Blöbaum, Sina, and Sebastian Peitz. “Explicit Multiobjective Model Predictive
    Control for Nonlinear Systems  with Symmetries.” <i>International Journal of Robust
    and Nonlinear Control</i>, vol. 31(2), 2021, pp. 380–403, doi:<a href="https://doi.org/10.1002/rnc.5281">10.1002/rnc.5281</a>.
  short: S. Ober-Blöbaum, S. Peitz, International Journal of Robust and Nonlinear
    Control 31(2) (2021) 380–403.
date_created: 2020-03-13T12:44:36Z
date_updated: 2022-01-24T13:27:50Z
department:
- _id: '101'
doi: 10.1002/rnc.5281
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://onlinelibrary.wiley.com/doi/epdf/10.1002/rnc.5281
oa: '1'
page: 380-403
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: International Journal of Robust and Nonlinear Control
status: public
title: Explicit multiobjective model predictive control for nonlinear systems  with
  symmetries
type: journal_article
user_id: '15694'
volume: 31(2)
year: '2021'
...
---
_id: '29549'
abstract:
- lang: ger
  text: 'Als Griechenland 1830 seine Unabhängigkeit erlangte, war das Land wirtschaftlich
    wenig entwickelt und von der Industrialisierung noch kaum berührt. Kredite für
    die Gründung oder den Ausbau von Unternehmen waren auf Grund des Kapitalmangels
    entweder unmöglich oder extrem teuer – ein für die wirtschaftliche Entwicklung
    ernst zu nehmendes Hemmnis. Das Land brauchte zur wirtschaftlichen Entwicklung
    also Investitionen aus dem Ausland. Jedoch hielten sich die europäischen Banken
    und Anleger mit solchen Investitionen vor den 1870er Jahren zurück. Warum diese
    Scheu der Kapitalanleger vor Griechenland, obwohl sie anderswo keineswegs vor
    risikoreichen Investitionen zurückschreckten, wenn nur entsprechend hohe Erträge
    lockten? Dieser Frage möchte der Beitrag anhand eines Beispiels nachgehen: der
    bayerisch-französischen Bankiersfamilie von Eichthal, die in den 1830er Jahren
    enge Geschäftsbeziehungen nach Griechenland aufbaute und zeitweilig sehr interessiert
    an Investitionen war – bevor das Bankhaus sich von diesen Plänen schließlich unverrichteter
    Dinge wieder abwandte. Das kulturelle Interesse an Griechenland überdauerte dagegen
    bis in die 1880er Jahre. Die Eichthals eignen sich hervorragend, um paradigmatisch
    zu untersuchen, auf welcher Grundlage und wie europäische Bankiers ihre Investitionsentscheidungen
    für oder gegen Griechenland trafen.'
author:
- first_name: Korinna
  full_name: Schönhärl, Korinna
  id: '89037'
  last_name: Schönhärl
  orcid: 0000-0002-7967-3261
citation:
  ama: Schönhärl K. <i>Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830</i>.; 2021.
  apa: Schönhärl, K. (2021). <i>Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830</i>.
  bibtex: '@book{Schönhärl_2021, title={Finanzielle Netze. Die bayerisch–französische
    Familienbank von Eichthal und ihre Investitionspläne in Griechenland in den 1830er
    Jahren/ Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και
    τα επενδυτικά σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830}, author={Schönhärl,
    Korinna}, year={2021} }'
  chicago: Schönhärl, Korinna. <i>Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830</i>, 2021.
  ieee: K. Schönhärl, <i>Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830</i>. 2021.
  mla: Schönhärl, Korinna. <i>Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830</i>. 2021.
  short: K. Schönhärl, Finanzielle Netze. Die bayerisch–französische Familienbank
    von Eichthal und ihre Investitionspläne in Griechenland in den 1830er Jahren/
    Οικονομικά δίκτυα. Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά
    σχέδιά της στην Ελλάδα κατά τη δεκαετία του 1830, 2021.
date_created: 2022-01-27T09:24:24Z
date_updated: 2022-01-27T09:24:46Z
department:
- _id: '445'
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://comdeg.eu/compendium/essay/103206/
oa: '1'
status: public
title: Finanzielle Netze. Die bayerisch–französische Familienbank von Eichthal und
  ihre Investitionspläne in Griechenland in den 1830er Jahren/ Οικονομικά δίκτυα.
  Η βαυαρογαλλική οικογενειακή τράπεζα των Άιχταλ και τα επενδυτικά σχέδιά της στην
  Ελλάδα κατά τη δεκαετία του 1830
type: misc
user_id: '89037'
year: '2021'
...
---
_id: '22764'
abstract:
- lang: eng
  text: Robotics applications process large amounts of data in real-time and require
    compute platforms that provide high performance and energy-efficiency. FPGAs are
    well-suited for many of these applications, but there is a reluctance in the robotics
    community to use hardware acceleration due to increased design complexity and
    a lack of consistent programming models across the software/hardware boundary.
    In this paper we present ReconROS, a framework that integrates the widely-used
    robot operating system (ROS) with ReconOS, which features multithreaded programming
    of hardware and software threads for reconfigurable computers. This unique combination
    gives ROS2 developers the flexibility to transparently accelerate parts of their
    robotics applications in hardware. We elaborate on the architecture and the design
    flow for ReconROS and report on a set of experiments that underline the feasibility
    and flexibility of our approach.
author:
- first_name: Christian
  full_name: Lienen, Christian
  id: '60323'
  last_name: Lienen
- first_name: Marco
  full_name: Platzner, Marco
  id: '398'
  last_name: Platzner
citation:
  ama: Lienen C, Platzner M. Design of Distributed Reconfigurable Robotics Systems
    with ReconROS. <i>arXiv:210707208</i>. Published online 2021.
  apa: Lienen, C., &#38; Platzner, M. (2021). Design of Distributed Reconfigurable
    Robotics Systems with ReconROS. In <i>arXiv:2107.07208</i>.
  bibtex: '@article{Lienen_Platzner_2021, title={Design of Distributed Reconfigurable
    Robotics Systems with ReconROS}, journal={arXiv:2107.07208}, author={Lienen, Christian
    and Platzner, Marco}, year={2021} }'
  chicago: Lienen, Christian, and Marco Platzner. “Design of Distributed Reconfigurable
    Robotics Systems with ReconROS.” <i>ArXiv:2107.07208</i>, 2021.
  ieee: C. Lienen and M. Platzner, “Design of Distributed Reconfigurable Robotics
    Systems with ReconROS,” <i>arXiv:2107.07208</i>. 2021.
  mla: Lienen, Christian, and Marco Platzner. “Design of Distributed Reconfigurable
    Robotics Systems with ReconROS.” <i>ArXiv:2107.07208</i>, 2021.
  short: C. Lienen, M. Platzner, ArXiv:2107.07208 (2021).
date_created: 2021-07-16T05:38:56Z
date_updated: 2022-01-28T08:30:24Z
department:
- _id: '78'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2107.07208
oa: '1'
page: '19'
publication: arXiv:2107.07208
status: public
title: Design of Distributed Reconfigurable Robotics Systems with ReconROS
type: preprint
user_id: '60323'
year: '2021'
...
---
_id: '25880'
author:
- first_name: Tim
  full_name: Hetkämper, Tim
  id: '38123'
  last_name: Hetkämper
- first_name: Dmitrij
  full_name: Dreiling, Dmitrij
  id: '32616'
  last_name: Dreiling
- first_name: Leander
  full_name: Claes, Leander
  id: '11829'
  last_name: Claes
  orcid: 0000-0002-4393-268X
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Hetkämper T, Dreiling D, Claes L, Henning B. Tomographie des Schallfelds von
    Ultraschallwandlern mittels Schlierentechnik. In: <i>Fortschritte der Akustik
    - DAGA 2021</i>. ; 2021.'
  apa: Hetkämper, T., Dreiling, D., Claes, L., &#38; Henning, B. (2021). Tomographie
    des Schallfelds von Ultraschallwandlern mittels Schlierentechnik. <i>Fortschritte
    der Akustik - DAGA 2021</i>. DAGA 2021 - 47. Jahrestagung für Akustik.
  bibtex: '@inproceedings{Hetkämper_Dreiling_Claes_Henning_2021, title={Tomographie
    des Schallfelds von Ultraschallwandlern mittels Schlierentechnik}, booktitle={Fortschritte
    der Akustik - DAGA 2021}, author={Hetkämper, Tim and Dreiling, Dmitrij and Claes,
    Leander and Henning, Bernd}, year={2021} }'
  chicago: Hetkämper, Tim, Dmitrij Dreiling, Leander Claes, and Bernd Henning. “Tomographie
    des Schallfelds von Ultraschallwandlern mittels Schlierentechnik.” In <i>Fortschritte
    der Akustik - DAGA 2021</i>, 2021.
  ieee: T. Hetkämper, D. Dreiling, L. Claes, and B. Henning, “Tomographie des Schallfelds
    von Ultraschallwandlern mittels Schlierentechnik,” presented at the DAGA 2021
    - 47. Jahrestagung für Akustik, 2021.
  mla: Hetkämper, Tim, et al. “Tomographie des Schallfelds von Ultraschallwandlern
    mittels Schlierentechnik.” <i>Fortschritte der Akustik - DAGA 2021</i>, 2021.
  short: 'T. Hetkämper, D. Dreiling, L. Claes, B. Henning, in: Fortschritte der Akustik
    - DAGA 2021, 2021.'
conference:
  name: DAGA 2021 - 47. Jahrestagung für Akustik
date_created: 2021-10-08T08:08:17Z
date_updated: 2022-05-12T15:29:26Z
ddc:
- '620'
department:
- _id: '49'
file:
- access_level: open_access
  content_type: application/pdf
  creator: timh1
  date_created: 2022-05-12T15:28:52Z
  date_updated: 2022-05-12T15:28:52Z
  file_id: '31240'
  file_name: Tomographie des Schallfelds von Ultraschallwandlern mittels Schlierentechnik.pdf
  file_size: 870692
  relation: main_file
file_date_updated: 2022-05-12T15:28:52Z
has_accepted_license: '1'
language:
- iso: ger
oa: '1'
publication: Fortschritte der Akustik - DAGA 2021
publication_status: published
status: public
title: Tomographie des Schallfelds von Ultraschallwandlern mittels Schlierentechnik
type: conference
user_id: '38123'
year: '2021'
...
---
_id: '31385'
author:
- first_name: Max
  full_name: Hoffmann, Max
  id: '32202'
  last_name: Hoffmann
citation:
  ama: 'Hoffmann M. Rezension: Hendrik Kasten und Denis Vogel: Grundlagen der ebenen
    Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie. <i>Mathematische
    Semesterberichte</i>. 2021;68:295–297. doi:<a href="https://doi.org/10.1007/s00591-021-00299-3">10.1007/s00591-021-00299-3</a>'
  apa: 'Hoffmann, M. (2021). Rezension: Hendrik Kasten und Denis Vogel: Grundlagen
    der ebenen Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie.
    In <i>Mathematische Semesterberichte</i> (Vol. 68, pp. 295–297). <a href="https://doi.org/10.1007/s00591-021-00299-3">https://doi.org/10.1007/s00591-021-00299-3</a>'
  bibtex: '@article{Hoffmann_2021, title={Rezension: Hendrik Kasten und Denis Vogel:
    Grundlagen der ebenen Geometrie – Eine zugängliche aber exakte Einführung in die
    ebene Geometrie}, volume={68}, DOI={<a href="https://doi.org/10.1007/s00591-021-00299-3">10.1007/s00591-021-00299-3</a>},
    journal={Mathematische Semesterberichte}, author={Hoffmann, Max}, year={2021},
    pages={295–297} }'
  chicago: 'Hoffmann, Max. “Rezension: Hendrik Kasten und Denis Vogel: Grundlagen
    der ebenen Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie.”
    <i>Mathematische Semesterberichte</i>, 2021. <a href="https://doi.org/10.1007/s00591-021-00299-3">https://doi.org/10.1007/s00591-021-00299-3</a>.'
  ieee: 'M. Hoffmann, “Rezension: Hendrik Kasten und Denis Vogel: Grundlagen der ebenen
    Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie,” <i>Mathematische
    Semesterberichte</i>, vol. 68. pp. 295–297, 2021, doi: <a href="https://doi.org/10.1007/s00591-021-00299-3">10.1007/s00591-021-00299-3</a>.'
  mla: 'Hoffmann, Max. “Rezension: Hendrik Kasten und Denis Vogel: Grundlagen der
    ebenen Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie.”
    <i>Mathematische Semesterberichte</i>, vol. 68, 2021, pp. 295–297, doi:<a href="https://doi.org/10.1007/s00591-021-00299-3">10.1007/s00591-021-00299-3</a>.'
  short: M. Hoffmann, Mathematische Semesterberichte 68 (2021) 295–297.
date_created: 2022-05-22T15:20:46Z
date_updated: 2022-05-22T15:58:33Z
department:
- _id: '97'
doi: 10.1007/s00591-021-00299-3
intvolume: '        68'
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://link.springer.com/article/10.1007/s00591-021-00299-3
oa: '1'
page: 295–297
publication: Mathematische Semesterberichte
publication_status: published
status: public
title: 'Rezension: Hendrik Kasten und Denis Vogel: Grundlagen der ebenen Geometrie
  – Eine zugängliche aber exakte Einführung in die ebene Geometrie'
type: review
user_id: '32202'
volume: 68
year: '2021'
...
---
_id: '24955'
article_type: original
author:
- first_name: David
  full_name: Woitkowski, David
  last_name: Woitkowski
- first_name: Leonie
  full_name: Rochell, Leonie
  last_name: Rochell
- first_name: Anna
  full_name: Bauer, Anna
  id: '24755'
  last_name: Bauer
  orcid: 0000-0002-1742-3099
citation:
  ama: Woitkowski D, Rochell L, Bauer A. German university students’ views of nature
    of science in the introductory phase. <i>Physical Review Physics Education Research</i>.
    Published online 2021. doi:<a href="https://doi.org/10.1103/physrevphyseducres.17.010118">10.1103/physrevphyseducres.17.010118</a>
  apa: Woitkowski, D., Rochell, L., &#38; Bauer, A. (2021). German university students’
    views of nature of science in the introductory phase. <i>Physical Review Physics
    Education Research</i>. <a href="https://doi.org/10.1103/physrevphyseducres.17.010118">https://doi.org/10.1103/physrevphyseducres.17.010118</a>
  bibtex: '@article{Woitkowski_Rochell_Bauer_2021, title={German university students’
    views of nature of science in the introductory phase}, DOI={<a href="https://doi.org/10.1103/physrevphyseducres.17.010118">10.1103/physrevphyseducres.17.010118</a>},
    journal={Physical Review Physics Education Research}, author={Woitkowski, David
    and Rochell, Leonie and Bauer, Anna}, year={2021} }'
  chicago: Woitkowski, David, Leonie Rochell, and Anna Bauer. “German University Students’
    Views of Nature of Science in the Introductory Phase.” <i>Physical Review Physics
    Education Research</i>, 2021. <a href="https://doi.org/10.1103/physrevphyseducres.17.010118">https://doi.org/10.1103/physrevphyseducres.17.010118</a>.
  ieee: 'D. Woitkowski, L. Rochell, and A. Bauer, “German university students’ views
    of nature of science in the introductory phase,” <i>Physical Review Physics Education
    Research</i>, 2021, doi: <a href="https://doi.org/10.1103/physrevphyseducres.17.010118">10.1103/physrevphyseducres.17.010118</a>.'
  mla: Woitkowski, David, et al. “German University Students’ Views of Nature of Science
    in the Introductory Phase.” <i>Physical Review Physics Education Research</i>,
    2021, doi:<a href="https://doi.org/10.1103/physrevphyseducres.17.010118">10.1103/physrevphyseducres.17.010118</a>.
  short: D. Woitkowski, L. Rochell, A. Bauer, Physical Review Physics Education Research
    (2021).
date_created: 2021-09-23T13:08:05Z
date_updated: 2022-05-27T14:04:20Z
department:
- _id: '299'
- _id: '651'
doi: 10.1103/physrevphyseducres.17.010118
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://journals.aps.org/prper/abstract/10.1103/PhysRevPhysEducRes.17.010118
oa: '1'
publication: Physical Review Physics Education Research
publication_identifier:
  issn:
  - 2469-9896
publication_status: published
quality_controlled: '1'
status: public
title: German university students’ views of nature of science in the introductory
  phase
type: journal_article
user_id: '24755'
year: '2021'
...
---
_id: '21726'
author:
- first_name: Marcel
  full_name: Triebus, Marcel
  id: '66036'
  last_name: Triebus
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: 'Triebus M, Tröster T. HyOpt - Optimization-Based Development of Hybrid Materials.
    In: <i>9th NRW Nano Conference - Innovations in Materials and Applications</i>.
    ; 2021.'
  apa: Triebus, M., &#38; Tröster, T. (2021). HyOpt - Optimization-Based Development
    of Hybrid Materials. <i>9th NRW Nano Conference - Innovations in Materials and
    Applications</i>. 9th NRW Nano Conference - Innovations in Materials and Applications,
    Web.
  bibtex: '@inproceedings{Triebus_Tröster_2021, title={HyOpt - Optimization-Based
    Development of Hybrid Materials}, booktitle={9th NRW Nano Conference - Innovations
    in Materials and Applications}, author={Triebus, Marcel and Tröster, Thomas},
    year={2021} }'
  chicago: Triebus, Marcel, and Thomas Tröster. “HyOpt - Optimization-Based Development
    of Hybrid Materials.” In <i>9th NRW Nano Conference - Innovations in Materials
    and Applications</i>, 2021.
  ieee: M. Triebus and T. Tröster, “HyOpt - Optimization-Based Development of Hybrid
    Materials,” presented at the 9th NRW Nano Conference - Innovations in Materials
    and Applications, Web, 2021.
  mla: Triebus, Marcel, and Thomas Tröster. “HyOpt - Optimization-Based Development
    of Hybrid Materials.” <i>9th NRW Nano Conference - Innovations in Materials and
    Applications</i>, 2021.
  short: 'M. Triebus, T. Tröster, in: 9th NRW Nano Conference - Innovations in Materials
    and Applications, 2021.'
conference:
  end_date: 2021-04-23
  location: Web
  name: 9th NRW Nano Conference - Innovations in Materials and Applications
  start_date: 2021-04-21
date_created: 2021-04-23T13:05:47Z
date_updated: 2022-08-17T08:07:39Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.researchgate.net/publication/351224925_HyOpt_-_Optimization-Based_Development_of_Hybrid_Materials
oa: '1'
publication: 9th NRW Nano Conference - Innovations in Materials and Applications
status: public
title: HyOpt - Optimization-Based Development of Hybrid Materials
type: conference_abstract
user_id: '66036'
year: '2021'
...
---
_id: '28988'
author:
- first_name: Jonas
  full_name: Kirchhoff, Jonas
  id: '39928'
  last_name: Kirchhoff
citation:
  ama: 'Kirchhoff J. Providing Decision Makers with Tailored Decision Support Systems.
    In: <i>The 1st Early Career Researchers Workshop Co-Located with ECSS 2021</i>.
    ; 2021.'
  apa: Kirchhoff, J. (2021). Providing Decision Makers with Tailored Decision Support
    Systems. <i>The 1st Early Career Researchers Workshop Co-Located with ECSS 2021</i>.
    17th European Computer Science Summit (ECSS 2021), Madrid.
  bibtex: '@inproceedings{Kirchhoff_2021, title={Providing Decision Makers with Tailored
    Decision Support Systems}, booktitle={The 1st Early Career Researchers Workshop
    Co-Located with ECSS 2021}, author={Kirchhoff, Jonas}, year={2021} }'
  chicago: Kirchhoff, Jonas. “Providing Decision Makers with Tailored Decision Support
    Systems.” In <i>The 1st Early Career Researchers Workshop Co-Located with ECSS
    2021</i>, 2021.
  ieee: J. Kirchhoff, “Providing Decision Makers with Tailored Decision Support Systems,”
    presented at the 17th European Computer Science Summit (ECSS 2021), Madrid, 2021.
  mla: Kirchhoff, Jonas. “Providing Decision Makers with Tailored Decision Support
    Systems.” <i>The 1st Early Career Researchers Workshop Co-Located with ECSS 2021</i>,
    2021.
  short: 'J. Kirchhoff, in: The 1st Early Career Researchers Workshop Co-Located with
    ECSS 2021, 2021.'
conference:
  end_date: 2021-10-27
  location: Madrid
  name: 17th European Computer Science Summit (ECSS 2021)
  start_date: 2021-10-25
date_created: 2021-12-15T16:12:22Z
date_updated: 2022-08-22T11:32:12Z
department:
- _id: '534'
- _id: '66'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.informatics-europe.org/images/ECSS/ECSS2022/members-spotlight/Proceedings-Early-Career-Researchers-Workshop-ECSS2021.pdf#page=37
oa: '1'
publication: The 1st Early Career Researchers Workshop Co-Located with ECSS 2021
status: public
title: Providing Decision Makers with Tailored Decision Support Systems
type: conference
user_id: '39928'
year: '2021'
...
---
_id: '32560'
abstract:
- lang: eng
  text: "Several methods are available to answer questions regarding similarity and
    accuracy,\r\neach of which has specific properties and limitations. This study
    focuses on the\r\nLatent Congruence Model (LCM; Cheung, 2009), because of its
    capacity to deal\r\nwith cross-informant measurement invariance issues. Until
    now, no cross-national\r\napplications of LCM are present in the literature, perhaps
    because of the difficulty\r\nto deal with both cross-national and cross-informant
    measurement issues implied by\r\nthose models. This study presents a step-by-step
    procedure to apply LCM to dyadic\r\ncross-national research designs controlling
    for both cross-national and cross-informant\r\nmeasurement invariance. An illustrative
    example on parent–child support exchanges in\r\nItaly and Germany is provided.
    Findings help to show the different possible scenarios\r\nof partial invariance,
    and a discussion related to how to deal with those scenarios is\r\nprovided. Future
    perspectives in the study of parent–child similarity and accuracy in\r\ncross-national
    research will be discussed."
article_number: '672383'
author:
- first_name: Semira
  full_name: Tagliabue, Semira
  last_name: Tagliabue
- first_name: Michela
  full_name: Zambelli, Michela
  last_name: Zambelli
- first_name: Angela
  full_name: Sorgente, Angela
  last_name: Sorgente
- first_name: Sabrina
  full_name: Sommer, Sabrina
  last_name: Sommer
- first_name: Christian
  full_name: Hoellger, Christian
  last_name: Hoellger
- first_name: Heike M.
  full_name: Buhl, Heike M.
  id: '27152'
  last_name: Buhl
- first_name: Margherita
  full_name: Lanz, Margherita
  last_name: Lanz
citation:
  ama: 'Tagliabue S, Zambelli M, Sorgente A, et al. Latent Congruence Model to Investigate
    Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National
    and Cross-Informant Measurement (Non)Invariance. <i>Frontiers in Psychology</i>.
    2021;12. doi:<a href="https://doi.org/10.3389/fpsyg.2021.672383">10.3389/fpsyg.2021.672383</a>'
  apa: 'Tagliabue, S., Zambelli, M., Sorgente, A., Sommer, S., Hoellger, C., Buhl,
    H. M., &#38; Lanz, M. (2021). Latent Congruence Model to Investigate Similarity
    and Accuracy in Family Members’ Perception: The Challenge of Cross-National and
    Cross-Informant Measurement (Non)Invariance. <i>Frontiers in Psychology</i>, <i>12</i>,
    Article 672383. <a href="https://doi.org/10.3389/fpsyg.2021.672383">https://doi.org/10.3389/fpsyg.2021.672383</a>'
  bibtex: '@article{Tagliabue_Zambelli_Sorgente_Sommer_Hoellger_Buhl_Lanz_2021, title={Latent
    Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception:
    The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance},
    volume={12}, DOI={<a href="https://doi.org/10.3389/fpsyg.2021.672383">10.3389/fpsyg.2021.672383</a>},
    number={672383}, journal={Frontiers in Psychology}, publisher={Frontiers Media
    SA}, author={Tagliabue, Semira and Zambelli, Michela and Sorgente, Angela and
    Sommer, Sabrina and Hoellger, Christian and Buhl, Heike M. and Lanz, Margherita},
    year={2021} }'
  chicago: 'Tagliabue, Semira, Michela Zambelli, Angela Sorgente, Sabrina Sommer,
    Christian Hoellger, Heike M. Buhl, and Margherita Lanz. “Latent Congruence Model
    to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge
    of Cross-National and Cross-Informant Measurement (Non)Invariance.” <i>Frontiers
    in Psychology</i> 12 (2021). <a href="https://doi.org/10.3389/fpsyg.2021.672383">https://doi.org/10.3389/fpsyg.2021.672383</a>.'
  ieee: 'S. Tagliabue <i>et al.</i>, “Latent Congruence Model to Investigate Similarity
    and Accuracy in Family Members’ Perception: The Challenge of Cross-National and
    Cross-Informant Measurement (Non)Invariance,” <i>Frontiers in Psychology</i>,
    vol. 12, Art. no. 672383, 2021, doi: <a href="https://doi.org/10.3389/fpsyg.2021.672383">10.3389/fpsyg.2021.672383</a>.'
  mla: 'Tagliabue, Semira, et al. “Latent Congruence Model to Investigate Similarity
    and Accuracy in Family Members’ Perception: The Challenge of Cross-National and
    Cross-Informant Measurement (Non)Invariance.” <i>Frontiers in Psychology</i>,
    vol. 12, 672383, Frontiers Media SA, 2021, doi:<a href="https://doi.org/10.3389/fpsyg.2021.672383">10.3389/fpsyg.2021.672383</a>.'
  short: S. Tagliabue, M. Zambelli, A. Sorgente, S. Sommer, C. Hoellger, H.M. Buhl,
    M. Lanz, Frontiers in Psychology 12 (2021).
date_created: 2022-08-03T05:59:20Z
date_updated: 2022-08-29T06:38:34Z
department:
- _id: '427'
doi: 10.3389/fpsyg.2021.672383
intvolume: '        12'
keyword:
- latent congruence model
- measurement invariance
- similarity
- accuracy
- cross-national
- cross-informant
- parent-child relationship
- support exchanges
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.frontiersin.org/articles/10.3389/fpsyg.2021.672383/pdf
oa: '1'
publication: Frontiers in Psychology
publication_identifier:
  issn:
  - 1664-1078
publication_status: published
publisher: Frontiers Media SA
status: public
title: 'Latent Congruence Model to Investigate Similarity and Accuracy in Family Members''
  Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance'
type: journal_article
user_id: '42165'
volume: 12
year: '2021'
...
---
_id: '21502'
abstract:
- lang: ger
  text: Die vollständige Beschreibung fluiddynamischer und akustischer Vorgänge setzt
    voraus, dass die Eigenschaften des Fluids hinlänglich bekannt sind.Während Fluidkenngrößen,
    wie etwa die Schallgeschwindigkeit oder die Scherviskosität, für viele Flüssigkeiten
    über weite Bereiche des thermodynamischen Zustandsraums bekannt sind, existieren
    für die Volumenviskosität nur eine geringe Anzahl Messdaten.In dieser Arbeit wird
    daher ein Messverfahren zur selektiven Bestimmung der Volumenviskosität von Flüssigkeiten,
    basierend auf der Absorption von Ultraschallwellen, entwickelt und realisiert.Schwerpunkte
    bilden dabei der simulationsgestützte Entwurf von Algorithmen zur Auswertung der
    Messsignale sowie die Analyse und Weiterentwicklung einer Messanordnung, basierend
    auf dem Puls-Echo-Verfahren. Neben der Absorption im Fluid treten dabei weitere
    Effekte (zum Beispiel Beugung oder unvollständige Reflexion) auf, die das akustische
    Signal schwächen oder anderweitig beeinflussen. Die Entwicklung von Verfahren
    zur Trennung dieser Effekte von der akustischen Absorption bildet daher einen
    weiteren Schwerpunkt dieser Arbeit.Abschließend wird die Volumenviskosität aus
    der gemessenen akustischen Absorption für unterschiedliche Fluide in verschiedenen
    thermodynamischen Zuständen unter Zuhilfenahme anderer bekannter Fluidkenngrößen
    bestimmt sowie eine Unsicherheitsbetrachtung durchgeführt.
- lang: eng
  text: The prerequisite for a complete description of fluid dynamic and acoustic
    processes is that all properties of the fluid are known.While fluid parameters
    such as the speed of sound or the shear viscosity are known for many liquids over
    a wide range of thermodynamic states, only limited measurement data exist for
    the bulk viscosity.In this thesis, a measurement method for the selective determination
    of the bulk viscosity of liquids, based on the absorption of ultrasonic waves,
    is developed and implemented.The focus is on the simulation-driven design of algorithms
    for processing the measurement signals as well as the analysis and further development
    of a measurement set-up based on the pulse-echo method.In addition to absorption
    in the fluid, there are other effects (for example diffraction or incomplete reflection)
    that weaken or otherwise influence the acoustic signal.Therefore, the development
    of procedures to separate these effects from acoustic absorption is another focus
    of this work.The bulk viscosity is determined from the measured acoustic absorption
    for different fluids in different thermodynamic states. An uncertainty analysis
    of the measured quantities concludes this thesis.
author:
- first_name: Leander
  full_name: Claes, Leander
  id: '11829'
  last_name: Claes
  orcid: 0000-0002-4393-268X
citation:
  ama: Claes L. <i>Messverfahren für die akustische Absorption in reinen Fluiden zur
    Bestimmung der Volumenviskosität</i>. Universiät Paderborn; 2021. doi:<a href="https://doi.org/10.17619/UNIPB/1-1104">10.17619/UNIPB/1-1104</a>
  apa: Claes, L. (2021). <i>Messverfahren für die akustische Absorption in reinen
    Fluiden zur Bestimmung der Volumenviskosität</i>. Universiät Paderborn. <a href="https://doi.org/10.17619/UNIPB/1-1104">https://doi.org/10.17619/UNIPB/1-1104</a>
  bibtex: '@book{Claes_2021, title={Messverfahren für die akustische Absorption in
    reinen Fluiden zur Bestimmung der Volumenviskosität}, DOI={<a href="https://doi.org/10.17619/UNIPB/1-1104">10.17619/UNIPB/1-1104</a>},
    publisher={Universiät Paderborn}, author={Claes, Leander}, year={2021} }'
  chicago: Claes, Leander. <i>Messverfahren für die akustische Absorption in reinen
    Fluiden zur Bestimmung der Volumenviskosität</i>. Universiät Paderborn, 2021.
    <a href="https://doi.org/10.17619/UNIPB/1-1104">https://doi.org/10.17619/UNIPB/1-1104</a>.
  ieee: L. Claes, <i>Messverfahren für die akustische Absorption in reinen Fluiden
    zur Bestimmung der Volumenviskosität</i>. Universiät Paderborn, 2021.
  mla: Claes, Leander. <i>Messverfahren für die akustische Absorption in reinen Fluiden
    zur Bestimmung der Volumenviskosität</i>. Universiät Paderborn, 2021, doi:<a href="https://doi.org/10.17619/UNIPB/1-1104">10.17619/UNIPB/1-1104</a>.
  short: L. Claes, Messverfahren für die akustische Absorption in reinen Fluiden zur
    Bestimmung der Volumenviskosität, Universiät Paderborn, 2021.
date_created: 2021-03-15T13:56:04Z
date_updated: 2022-09-06T07:08:31Z
department:
- _id: '49'
doi: 10.17619/UNIPB/1-1104
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://digital.ub.uni-paderborn.de/doi/10.17619/UNIPB/1-1104
oa: '1'
page: '223'
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publisher: Universiät Paderborn
status: public
supervisor:
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
- first_name: Jadran
  full_name: Vrabec, Jadran
  last_name: Vrabec
title: Messverfahren für die akustische Absorption in reinen Fluiden zur Bestimmung
  der Volumenviskosität
type: dissertation
user_id: '11829'
year: '2021'
...
---
_id: '33278'
abstract:
- lang: eng
  text: The kinetic Brownian motion on the sphere bundle of a Riemannian manifold
    M is a stochastic process that models a random perturbation of the geodesic flow.
    If M is an orientable compact constantly curved surface, we show that in the limit
    of infinitely large perturbation the L2-spectrum of the infinitesimal generator
    of a time-rescaled version of the process converges to the Laplace spectrum of
    the base manifold.
author:
- first_name: Martin
  full_name: Kolb, Martin
  id: '48880'
  last_name: Kolb
- first_name: Tobias
  full_name: Weich, Tobias
  last_name: Weich
- first_name: Lasse
  full_name: Wolf, Lasse
  last_name: Wolf
citation:
  ama: Kolb M, Weich T, Wolf L. Spectral Asymptotics for Kinetic Brownian Motion on
    Surfaces of Constant Curvature. <i>Annales Henri Poincaré </i>. 2021;23(4):1283-1296.
  apa: Kolb, M., Weich, T., &#38; Wolf, L. (2021). Spectral Asymptotics for Kinetic
    Brownian Motion on Surfaces of Constant Curvature. <i>Annales Henri Poincaré </i>,
    <i>23</i>(4), 1283–1296.
  bibtex: '@article{Kolb_Weich_Wolf_2021, title={Spectral Asymptotics for Kinetic
    Brownian Motion on Surfaces of Constant Curvature}, volume={23}, number={4}, journal={Annales
    Henri Poincaré }, publisher={Springer Science + Business Media}, author={Kolb,
    Martin and Weich, Tobias and Wolf, Lasse}, year={2021}, pages={1283–1296} }'
  chicago: 'Kolb, Martin, Tobias Weich, and Lasse Wolf. “Spectral Asymptotics for
    Kinetic Brownian Motion on Surfaces of Constant Curvature.” <i>Annales Henri Poincaré
    </i> 23, no. 4 (2021): 1283–96.'
  ieee: M. Kolb, T. Weich, and L. Wolf, “Spectral Asymptotics for Kinetic Brownian
    Motion on Surfaces of Constant Curvature,” <i>Annales Henri Poincaré </i>, vol.
    23, no. 4, pp. 1283–1296, 2021.
  mla: Kolb, Martin, et al. “Spectral Asymptotics for Kinetic Brownian Motion on Surfaces
    of Constant Curvature.” <i>Annales Henri Poincaré </i>, vol. 23, no. 4, Springer
    Science + Business Media, 2021, pp. 1283–96.
  short: M. Kolb, T. Weich, L. Wolf, Annales Henri Poincaré  23 (2021) 1283–1296.
date_created: 2022-09-07T07:05:33Z
date_updated: 2022-09-08T06:06:13Z
department:
- _id: '96'
intvolume: '        23'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://link.springer.com/article/10.1007/s00023-021-01121-5
oa: '1'
page: 1283-1296
publication: 'Annales Henri Poincaré '
publication_status: published
publisher: Springer Science + Business Media
related_material:
  link:
  - relation: contains
    url: https://link.springer.com/article/10.1007/s00023-021-01121-5
status: public
title: Spectral Asymptotics for Kinetic Brownian Motion on Surfaces of Constant Curvature
type: journal_article
user_id: '85821'
volume: 23
year: '2021'
...
---
_id: '33372'
abstract:
- lang: eng
  text: '<jats:p>Academics may actively respond to the expectations of the academic
    status market, which have largely been shaped by the World University Rankings
    (WURs). This study empirically examines how academics’ citation patterns have
    changed in response to the rise of an “evaluation environment” in academia. We
    regard the WURs to be a macro-level trigger for cementing a bibliometric-based
    evaluation environment in academia. Our analyses of citation patterns in papers
    published in two higher education journals explicitly considered three distinct
    periods: the pre-WURs (1990–2003), the period of WURs implementation (2004–2010),
    and the period of adaption to WURs (2011–2017). We applied the nonparametric Kaplan–Meier
    method to compare first-citation speeds of papers published across the three periods.
    We found that not only has first-citation speed become faster, but first-citation
    probability has also increased following the emergence of the WURs. Applying Cox
    proportional hazard models to first-citation probabilities, we identified journal
    impact factors and third-party funding as factors influencing first-citation probability,
    while other author- and paper-related factors showed limited effects. We also
    found that the general effects of different factors on first-citation speeds have
    changed with the emergence of the WURs. The findings expand our understanding
    of the citation patterns of academics in the rise of WURs and provide practical
    grounds for research policy as well as higher education policy.</jats:p>'
article_number: '9515'
article_type: original
author:
- first_name: Soo Jeung
  full_name: Lee, Soo Jeung
  last_name: Lee
- first_name: Christian
  full_name: Schneijderberg, Christian
  last_name: Schneijderberg
- first_name: Yangson
  full_name: Kim, Yangson
  last_name: Kim
- first_name: Isabel
  full_name: Steinhardt, Isabel
  id: '90339'
  last_name: Steinhardt
  orcid: https://orcid.org/0000-0002-2590-6189
citation:
  ama: Lee SJ, Schneijderberg C, Kim Y, Steinhardt I. Have Academics’ Citation Patterns
    Changed in Response to the Rise of World University Rankings? A Test Using First-Citation
    Speeds. <i>Sustainability</i>. 2021;13(17). doi:<a href="https://doi.org/10.3390/su13179515">10.3390/su13179515</a>
  apa: Lee, S. J., Schneijderberg, C., Kim, Y., &#38; Steinhardt, I. (2021). Have
    Academics’ Citation Patterns Changed in Response to the Rise of World University
    Rankings? A Test Using First-Citation Speeds. <i>Sustainability</i>, <i>13</i>(17),
    Article 9515. <a href="https://doi.org/10.3390/su13179515">https://doi.org/10.3390/su13179515</a>
  bibtex: '@article{Lee_Schneijderberg_Kim_Steinhardt_2021, title={Have Academics’
    Citation Patterns Changed in Response to the Rise of World University Rankings?
    A Test Using First-Citation Speeds}, volume={13}, DOI={<a href="https://doi.org/10.3390/su13179515">10.3390/su13179515</a>},
    number={179515}, journal={Sustainability}, publisher={MDPI AG}, author={Lee, Soo
    Jeung and Schneijderberg, Christian and Kim, Yangson and Steinhardt, Isabel},
    year={2021} }'
  chicago: Lee, Soo Jeung, Christian Schneijderberg, Yangson Kim, and Isabel Steinhardt.
    “Have Academics’ Citation Patterns Changed in Response to the Rise of World University
    Rankings? A Test Using First-Citation Speeds.” <i>Sustainability</i> 13, no. 17
    (2021). <a href="https://doi.org/10.3390/su13179515">https://doi.org/10.3390/su13179515</a>.
  ieee: 'S. J. Lee, C. Schneijderberg, Y. Kim, and I. Steinhardt, “Have Academics’
    Citation Patterns Changed in Response to the Rise of World University Rankings?
    A Test Using First-Citation Speeds,” <i>Sustainability</i>, vol. 13, no. 17, Art.
    no. 9515, 2021, doi: <a href="https://doi.org/10.3390/su13179515">10.3390/su13179515</a>.'
  mla: Lee, Soo Jeung, et al. “Have Academics’ Citation Patterns Changed in Response
    to the Rise of World University Rankings? A Test Using First-Citation Speeds.”
    <i>Sustainability</i>, vol. 13, no. 17, 9515, MDPI AG, 2021, doi:<a href="https://doi.org/10.3390/su13179515">10.3390/su13179515</a>.
  short: S.J. Lee, C. Schneijderberg, Y. Kim, I. Steinhardt, Sustainability 13 (2021).
date_created: 2022-09-15T08:27:56Z
date_updated: 2022-09-15T08:37:41Z
ddc:
- '300'
department:
- _id: '121'
doi: 10.3390/su13179515
extern: '1'
file:
- access_level: closed
  content_type: application/pdf
  creator: isste
  date_created: 2022-09-15T08:36:50Z
  date_updated: 2022-09-15T08:36:50Z
  file_id: '33375'
  file_name: Lee et al. 2021 Academic Citations.pdf
  file_size: 2407463
  relation: main_file
  success: 1
file_date_updated: 2022-09-15T08:36:50Z
has_accepted_license: '1'
intvolume: '        13'
issue: '17'
keyword:
- world university rankings
- citation
- first-citation speed
- Minerva
- Studies in Higher Education
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/2071-1050/13/17/9515
oa: '1'
publication: Sustainability
publication_identifier:
  issn:
  - 2071-1050
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Have Academics’ Citation Patterns Changed in Response to the Rise of World
  University Rankings? A Test Using First-Citation Speeds
type: journal_article
user_id: '90339'
volume: 13
year: '2021'
...
---
_id: '29292'
author:
- first_name: Robert
  full_name: Feldhans, Robert
  last_name: Feldhans
- first_name: Adrian
  full_name: Wilke, Adrian
  id: '9101'
  last_name: Wilke
  orcid: 0000-0002-6575-807X
- first_name: Stefan
  full_name: Heindorf, Stefan
  id: '11871'
  last_name: Heindorf
  orcid: 0000-0002-4525-6865
- first_name: Mohammad Hossein
  full_name: Shaker, Mohammad Hossein
  last_name: Shaker
- first_name: Barbara
  full_name: Hammer, Barbara
  last_name: Hammer
- first_name: Axel-Cyrille
  full_name: Ngonga Ngomo, Axel-Cyrille
  id: '65716'
  last_name: Ngonga Ngomo
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
citation:
  ama: 'Feldhans R, Wilke A, Heindorf S, et al. Drift Detection in Text Data with
    Document Embeddings. In: <i>Intelligent Data Engineering and Automated Learning
    – IDEAL 2021</i>. Springer International Publishing; 2021. doi:<a href="https://doi.org/10.1007/978-3-030-91608-4_11">10.1007/978-3-030-91608-4_11</a>'
  apa: Feldhans, R., Wilke, A., Heindorf, S., Shaker, M. H., Hammer, B., Ngonga Ngomo,
    A.-C., &#38; Hüllermeier, E. (2021). Drift Detection in Text Data with Document
    Embeddings. In <i>Intelligent Data Engineering and Automated Learning – IDEAL
    2021</i>. Springer International Publishing. <a href="https://doi.org/10.1007/978-3-030-91608-4_11">https://doi.org/10.1007/978-3-030-91608-4_11</a>
  bibtex: '@inbook{Feldhans_Wilke_Heindorf_Shaker_Hammer_Ngonga Ngomo_Hüllermeier_2021,
    place={Cham}, title={Drift Detection in Text Data with Document Embeddings}, DOI={<a
    href="https://doi.org/10.1007/978-3-030-91608-4_11">10.1007/978-3-030-91608-4_11</a>},
    booktitle={Intelligent Data Engineering and Automated Learning – IDEAL 2021},
    publisher={Springer International Publishing}, author={Feldhans, Robert and Wilke,
    Adrian and Heindorf, Stefan and Shaker, Mohammad Hossein and Hammer, Barbara and
    Ngonga Ngomo, Axel-Cyrille and Hüllermeier, Eyke}, year={2021} }'
  chicago: 'Feldhans, Robert, Adrian Wilke, Stefan Heindorf, Mohammad Hossein Shaker,
    Barbara Hammer, Axel-Cyrille Ngonga Ngomo, and Eyke Hüllermeier. “Drift Detection
    in Text Data with Document Embeddings.” In <i>Intelligent Data Engineering and
    Automated Learning – IDEAL 2021</i>. Cham: Springer International Publishing,
    2021. <a href="https://doi.org/10.1007/978-3-030-91608-4_11">https://doi.org/10.1007/978-3-030-91608-4_11</a>.'
  ieee: 'R. Feldhans <i>et al.</i>, “Drift Detection in Text Data with Document Embeddings,”
    in <i>Intelligent Data Engineering and Automated Learning – IDEAL 2021</i>, Cham:
    Springer International Publishing, 2021.'
  mla: Feldhans, Robert, et al. “Drift Detection in Text Data with Document Embeddings.”
    <i>Intelligent Data Engineering and Automated Learning – IDEAL 2021</i>, Springer
    International Publishing, 2021, doi:<a href="https://doi.org/10.1007/978-3-030-91608-4_11">10.1007/978-3-030-91608-4_11</a>.
  short: 'R. Feldhans, A. Wilke, S. Heindorf, M.H. Shaker, B. Hammer, A.-C. Ngonga
    Ngomo, E. Hüllermeier, in: Intelligent Data Engineering and Automated Learning
    – IDEAL 2021, Springer International Publishing, Cham, 2021.'
date_created: 2022-01-12T10:27:23Z
date_updated: 2022-10-15T19:54:20Z
department:
- _id: '574'
doi: 10.1007/978-3-030-91608-4_11
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://papers.dice-research.org/2021/IDEAL2021_DriftDetectionEmbeddings/Drift-Detection-in-Text-Data-with-Document-Embeddings-public.pdf
oa: '1'
place: Cham
publication: Intelligent Data Engineering and Automated Learning – IDEAL 2021
publication_identifier:
  isbn:
  - '9783030916077'
  - '9783030916084'
  issn:
  - 0302-9743
  - 1611-3349
publication_status: published
publisher: Springer International Publishing
related_material:
  link:
  - relation: confirmation
    url: https://link.springer.com/chapter/10.1007/978-3-030-91608-4_11
status: public
title: Drift Detection in Text Data with Document Embeddings
type: book_chapter
user_id: '11871'
year: '2021'
...
---
_id: '29287'
abstract:
- lang: eng
  text: "Knowledge graph embedding research has mainly focused on the two smallest\r\nnormed
    division algebras, $\\mathbb{R}$ and $\\mathbb{C}$. Recent results suggest\r\nthat
    trilinear products of quaternion-valued embeddings can be a more effective\r\nmeans
    to tackle link prediction. In addition, models based on convolutions on\r\nreal-valued
    embeddings often yield state-of-the-art results for link\r\nprediction. In this
    paper, we investigate a composition of convolution\r\noperations with hypercomplex
    multiplications. We propose the four approaches\r\nQMult, OMult, ConvQ and ConvO
    to tackle the link prediction problem. QMult and\r\nOMult can be considered as
    quaternion and octonion extensions of previous\r\nstate-of-the-art approaches,
    including DistMult and ComplEx. ConvQ and ConvO\r\nbuild upon QMult and OMult
    by including convolution operations in a way\r\ninspired by the residual learning
    framework. We evaluated our approaches on\r\nseven link prediction datasets including
    WN18RR, FB15K-237 and YAGO3-10.\r\nExperimental results suggest that the benefits
    of learning hypercomplex-valued\r\nvector representations become more apparent
    as the size and complexity of the\r\nknowledge graph grows. ConvO outperforms
    state-of-the-art approaches on\r\nFB15K-237 in MRR, Hit@1 and Hit@3, while QMult,
    OMult, ConvQ and ConvO\r\noutperform state-of-the-approaches on YAGO3-10 in all
    metrics. Results also\r\nsuggest that link prediction performances can be further
    improved via\r\nprediction averaging. To foster reproducible research, we provide
    an\r\nopen-source implementation of approaches, including training and evaluation\r\nscripts
    as well as pretrained models."
author:
- first_name: Caglar
  full_name: Demir, Caglar
  id: '43817'
  last_name: Demir
- first_name: Diego
  full_name: Moussallem, Diego
  id: '71635'
  last_name: Moussallem
- first_name: Stefan
  full_name: Heindorf, Stefan
  id: '11871'
  last_name: Heindorf
  orcid: 0000-0002-4525-6865
- first_name: Axel-Cyrille
  full_name: Ngonga Ngomo, Axel-Cyrille
  id: '65716'
  last_name: Ngonga Ngomo
citation:
  ama: 'Demir C, Moussallem D, Heindorf S, Ngonga Ngomo A-C. Convolutional Hypercomplex
    Embeddings for Link Prediction. In: <i>The 13th Asian Conference on Machine Learning,
    ACML 2021</i>. ; 2021.'
  apa: Demir, C., Moussallem, D., Heindorf, S., &#38; Ngonga Ngomo, A.-C. (2021).
    Convolutional Hypercomplex Embeddings for Link Prediction. <i>The 13th Asian Conference
    on Machine Learning, ACML 2021</i>.
  bibtex: '@inproceedings{Demir_Moussallem_Heindorf_Ngonga Ngomo_2021, title={Convolutional
    Hypercomplex Embeddings for Link Prediction}, booktitle={The 13th Asian Conference
    on Machine Learning, ACML 2021}, author={Demir, Caglar and Moussallem, Diego and
    Heindorf, Stefan and Ngonga Ngomo, Axel-Cyrille}, year={2021} }'
  chicago: Demir, Caglar, Diego Moussallem, Stefan Heindorf, and Axel-Cyrille Ngonga
    Ngomo. “Convolutional Hypercomplex Embeddings for Link Prediction.” In <i>The
    13th Asian Conference on Machine Learning, ACML 2021</i>, 2021.
  ieee: C. Demir, D. Moussallem, S. Heindorf, and A.-C. Ngonga Ngomo, “Convolutional
    Hypercomplex Embeddings for Link Prediction,” 2021.
  mla: Demir, Caglar, et al. “Convolutional Hypercomplex Embeddings for Link Prediction.”
    <i>The 13th Asian Conference on Machine Learning, ACML 2021</i>, 2021.
  short: 'C. Demir, D. Moussallem, S. Heindorf, A.-C. Ngonga Ngomo, in: The 13th Asian
    Conference on Machine Learning, ACML 2021, 2021.'
date_created: 2022-01-12T10:21:10Z
date_updated: 2022-10-17T15:06:40Z
department:
- _id: '574'
external_id:
  arxiv:
  - '2106.15230'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://papers.dice-research.org/2021/ACML2021_HyperConv/public.pdf
oa: '1'
publication: The 13th Asian Conference on Machine Learning, ACML 2021
status: public
title: Convolutional Hypercomplex Embeddings for Link Prediction
type: conference
user_id: '11871'
year: '2021'
...
