---
_id: '64220'
author:
- first_name: Jan-Philipp
  full_name: Disselkamp, Jan-Philipp
  last_name: Disselkamp
- first_name: Tobias
  full_name: Seidenberg, Tobias
  last_name: Seidenberg
- first_name: Jonas
  full_name: Lick, Jonas
  last_name: Lick
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: 'Disselkamp J-P, Seidenberg T, Lick J, Dumitrescu R. 24 Reasons for the Failure
    of Integrative and Integrated Product and Production System Development Methods.
    In: <i>2025 IEEE International Conference on Recent Advances in Systems Science
    and Engineering (RASSE)</i>. IEEE; 2025. doi:<a href="https://doi.org/10.1109/rasse64831.2025.11315397">10.1109/rasse64831.2025.11315397</a>'
  apa: Disselkamp, J.-P., Seidenberg, T., Lick, J., &#38; Dumitrescu, R. (2025). 24
    Reasons for the Failure of Integrative and Integrated Product and Production System
    Development Methods. <i>2025 IEEE International Conference on Recent Advances
    in Systems Science and Engineering (RASSE)</i>. <a href="https://doi.org/10.1109/rasse64831.2025.11315397">https://doi.org/10.1109/rasse64831.2025.11315397</a>
  bibtex: '@inproceedings{Disselkamp_Seidenberg_Lick_Dumitrescu_2025, title={24 Reasons
    for the Failure of Integrative and Integrated Product and Production System Development
    Methods}, DOI={<a href="https://doi.org/10.1109/rasse64831.2025.11315397">10.1109/rasse64831.2025.11315397</a>},
    booktitle={2025 IEEE International Conference on Recent Advances in Systems Science
    and Engineering (RASSE)}, publisher={IEEE}, author={Disselkamp, Jan-Philipp and
    Seidenberg, Tobias and Lick, Jonas and Dumitrescu, Roman}, year={2025} }'
  chicago: Disselkamp, Jan-Philipp, Tobias Seidenberg, Jonas Lick, and Roman Dumitrescu.
    “24 Reasons for the Failure of Integrative and Integrated Product and Production
    System Development Methods.” In <i>2025 IEEE International Conference on Recent
    Advances in Systems Science and Engineering (RASSE)</i>. IEEE, 2025. <a href="https://doi.org/10.1109/rasse64831.2025.11315397">https://doi.org/10.1109/rasse64831.2025.11315397</a>.
  ieee: 'J.-P. Disselkamp, T. Seidenberg, J. Lick, and R. Dumitrescu, “24 Reasons
    for the Failure of Integrative and Integrated Product and Production System Development
    Methods,” 2025, doi: <a href="https://doi.org/10.1109/rasse64831.2025.11315397">10.1109/rasse64831.2025.11315397</a>.'
  mla: Disselkamp, Jan-Philipp, et al. “24 Reasons for the Failure of Integrative
    and Integrated Product and Production System Development Methods.” <i>2025 IEEE
    International Conference on Recent Advances in Systems Science and Engineering
    (RASSE)</i>, IEEE, 2025, doi:<a href="https://doi.org/10.1109/rasse64831.2025.11315397">10.1109/rasse64831.2025.11315397</a>.
  short: 'J.-P. Disselkamp, T. Seidenberg, J. Lick, R. Dumitrescu, in: 2025 IEEE International
    Conference on Recent Advances in Systems Science and Engineering (RASSE), IEEE,
    2025.'
date_created: 2026-02-19T08:54:26Z
date_updated: 2026-02-19T09:00:40Z
department:
- _id: '563'
doi: 10.1109/rasse64831.2025.11315397
language:
- iso: eng
publication: 2025 IEEE International Conference on Recent Advances in Systems Science
  and Engineering (RASSE)
publication_status: published
publisher: IEEE
status: public
title: 24 Reasons for the Failure of Integrative and Integrated Product and Production
  System Development Methods
type: conference
user_id: '15782'
year: '2025'
...
---
_id: '64222'
author:
- first_name: Patrick
  full_name: Ködding, Patrick
  last_name: Ködding
- first_name: Christian
  full_name: Koldewey, Christian
  id: '43136'
  last_name: Koldewey
  orcid: https://orcid.org/0000-0001-7992-6399
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: Ködding P, Koldewey C, Dumitrescu R. Tailoring scenario projects with method
    and tool building blocks. <i>IEEE Engineering Management Review</i>. Published
    online 2025:1-9. doi:<a href="https://doi.org/10.1109/emr.2025.3646110">10.1109/emr.2025.3646110</a>
  apa: Ködding, P., Koldewey, C., &#38; Dumitrescu, R. (2025). Tailoring scenario
    projects with method and tool building blocks. <i>IEEE Engineering Management
    Review</i>, 1–9. <a href="https://doi.org/10.1109/emr.2025.3646110">https://doi.org/10.1109/emr.2025.3646110</a>
  bibtex: '@article{Ködding_Koldewey_Dumitrescu_2025, title={Tailoring scenario projects
    with method and tool building blocks}, DOI={<a href="https://doi.org/10.1109/emr.2025.3646110">10.1109/emr.2025.3646110</a>},
    journal={IEEE Engineering Management Review}, publisher={Institute of Electrical
    and Electronics Engineers (IEEE)}, author={Ködding, Patrick and Koldewey, Christian
    and Dumitrescu, Roman}, year={2025}, pages={1–9} }'
  chicago: Ködding, Patrick, Christian Koldewey, and Roman Dumitrescu. “Tailoring
    Scenario Projects with Method and Tool Building Blocks.” <i>IEEE Engineering Management
    Review</i>, 2025, 1–9. <a href="https://doi.org/10.1109/emr.2025.3646110">https://doi.org/10.1109/emr.2025.3646110</a>.
  ieee: 'P. Ködding, C. Koldewey, and R. Dumitrescu, “Tailoring scenario projects
    with method and tool building blocks,” <i>IEEE Engineering Management Review</i>,
    pp. 1–9, 2025, doi: <a href="https://doi.org/10.1109/emr.2025.3646110">10.1109/emr.2025.3646110</a>.'
  mla: Ködding, Patrick, et al. “Tailoring Scenario Projects with Method and Tool
    Building Blocks.” <i>IEEE Engineering Management Review</i>, Institute of Electrical
    and Electronics Engineers (IEEE), 2025, pp. 1–9, doi:<a href="https://doi.org/10.1109/emr.2025.3646110">10.1109/emr.2025.3646110</a>.
  short: P. Ködding, C. Koldewey, R. Dumitrescu, IEEE Engineering Management Review
    (2025) 1–9.
date_created: 2026-02-19T08:57:25Z
date_updated: 2026-02-19T09:00:33Z
department:
- _id: '563'
doi: 10.1109/emr.2025.3646110
language:
- iso: eng
page: 1-9
publication: IEEE Engineering Management Review
publication_identifier:
  issn:
  - 0360-8581
  - 1937-4178
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: Tailoring scenario projects with method and tool building blocks
type: journal_article
user_id: '15782'
year: '2025'
...
---
_id: '64229'
abstract:
- lang: eng
  text: <jats:title>ABSTRACT:</jats:title><jats:p>This paper presents the MBSE-Graph-RAG
    framework to address key challenges in Model-Based Systems Engineering (MBSE).
    Traditional MBSE tools suffer from usability barriers, limited accessibility,
    and integration challenges. By combining knowledge graphs with Retrieval-Augmented
    Generation (RAG), the proposed framework enables AI-Augmented engineering through
    natural language interactions and automated system architecture generation. A
    systematic literature review establishes a solid research foundation, identifying
    gaps in AI-assisted MBSE. Key contributions include a structured MBSE-Graph interface,
    improved usability via Large Language Models (LLMs), and automated graph construction
    aligned with SysML. A proof-of-concept demonstrates the potential of this approach
    to enhance MBSE by reducing complexity, improving data accessibility, and supporting
    engineering collaboration.</jats:p>
author:
- first_name: Fabian
  full_name: Hanke, Fabian
  last_name: Hanke
- first_name: 'Isaac '
  full_name: 'Mpidi Bita, Isaac '
  last_name: Mpidi Bita
- first_name: 'Oliver '
  full_name: 'von Heißen, Oliver '
  last_name: von Heißen
- first_name: Julian
  full_name: Weller, Julian
  last_name: Weller
- first_name: Aschot
  full_name: Hovemann, Aschot
  last_name: Hovemann
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: 'Hanke F, Mpidi Bita I, von Heißen O, Weller J, Hovemann A, Dumitrescu R. AI-augmented
    systems engineering: conceptual application of retrieval-augmented generation
    for model-based systems engineering graph. In: <i>Proceedings of the Design Society</i>.
    Vol 5. Cambridge University Press (CUP); 2025:439-448. doi:<a href="https://doi.org/10.1017/pds.2025.10058">10.1017/pds.2025.10058</a>'
  apa: 'Hanke, F., Mpidi Bita, I., von Heißen, O., Weller, J., Hovemann, A., &#38;
    Dumitrescu, R. (2025). AI-augmented systems engineering: conceptual application
    of retrieval-augmented generation for model-based systems engineering graph. <i>Proceedings
    of the Design Society</i>, <i>5</i>, 439–448. <a href="https://doi.org/10.1017/pds.2025.10058">https://doi.org/10.1017/pds.2025.10058</a>'
  bibtex: '@inproceedings{Hanke_Mpidi Bita_von Heißen_Weller_Hovemann_Dumitrescu_2025,
    title={AI-augmented systems engineering: conceptual application of retrieval-augmented
    generation for model-based systems engineering graph}, volume={5}, DOI={<a href="https://doi.org/10.1017/pds.2025.10058">10.1017/pds.2025.10058</a>},
    booktitle={Proceedings of the Design Society}, publisher={Cambridge University
    Press (CUP)}, author={Hanke, Fabian and Mpidi Bita, Isaac  and von Heißen, Oliver  and
    Weller, Julian and Hovemann, Aschot and Dumitrescu, Roman}, year={2025}, pages={439–448}
    }'
  chicago: 'Hanke, Fabian, Isaac  Mpidi Bita, Oliver  von Heißen, Julian Weller, Aschot
    Hovemann, and Roman Dumitrescu. “AI-Augmented Systems Engineering: Conceptual
    Application of Retrieval-Augmented Generation for Model-Based Systems Engineering
    Graph.” In <i>Proceedings of the Design Society</i>, 5:439–48. Cambridge University
    Press (CUP), 2025. <a href="https://doi.org/10.1017/pds.2025.10058">https://doi.org/10.1017/pds.2025.10058</a>.'
  ieee: 'F. Hanke, I. Mpidi Bita, O. von Heißen, J. Weller, A. Hovemann, and R. Dumitrescu,
    “AI-augmented systems engineering: conceptual application of retrieval-augmented
    generation for model-based systems engineering graph,” in <i>Proceedings of the
    Design Society</i>, 2025, vol. 5, pp. 439–448, doi: <a href="https://doi.org/10.1017/pds.2025.10058">10.1017/pds.2025.10058</a>.'
  mla: 'Hanke, Fabian, et al. “AI-Augmented Systems Engineering: Conceptual Application
    of Retrieval-Augmented Generation for Model-Based Systems Engineering Graph.”
    <i>Proceedings of the Design Society</i>, vol. 5, Cambridge University Press (CUP),
    2025, pp. 439–48, doi:<a href="https://doi.org/10.1017/pds.2025.10058">10.1017/pds.2025.10058</a>.'
  short: 'F. Hanke, I. Mpidi Bita, O. von Heißen, J. Weller, A. Hovemann, R. Dumitrescu,
    in: Proceedings of the Design Society, Cambridge University Press (CUP), 2025,
    pp. 439–448.'
date_created: 2026-02-19T09:13:22Z
date_updated: 2026-02-19T09:15:00Z
department:
- _id: '563'
doi: 10.1017/pds.2025.10058
intvolume: '         5'
language:
- iso: eng
page: 439-448
publication: Proceedings of the Design Society
publication_identifier:
  issn:
  - 2732-527X
publication_status: published
publisher: Cambridge University Press (CUP)
status: public
title: 'AI-augmented systems engineering: conceptual application of retrieval-augmented
  generation for model-based systems engineering graph'
type: conference
user_id: '15782'
volume: 5
year: '2025'
...
---
_id: '64253'
abstract:
- lang: eng
  text: <jats:p>This paper presents a comprehensive design framework for Enterprise
    Architecture aimed at facilitating decision-driven analytics in smart factories.
    The motivation behind this research lies in challenges faced by manufacturing
    companies, such as skilled labor shortages and increasing global competition,
    alongside the imperative for sustainable production. This journal provides a novel
    approach for designing and documenting prescriptive analytics use cases in manufacturing
    environments. The framework addresses the need for effective integration of advanced
    data analytics and prescriptive analytics solutions within existing production
    environments, thereby enhancing operational efficiency and decision-making processes.
    A Design Science Research approach is used to iteratively derive a framework based
    on stakeholder needs and activities along the prescriptive analytics use case
    development cycle. The resulting framework is demonstrated and evaluated in an
    IoT Factory setup in a research facility. From a practical perspective, the framework
    supports manufacturing companies in systematically designing prescriptive analytics
    use cases. From a research perspective, it contributes to the body of knowledge
    on Enterprise Architecture Management (EAM) by operationalizing the design of
    prescriptive analytics use cases in manufacturing contexts. The main contributions
    of this study include the development of a framework that supports the planning,
    design, and integration of prescriptive analytics use cases. This framework fosters
    interdisciplinary collaboration and aids in managing the complexity of data-driven
    projects.</jats:p>
article_number: '4271'
author:
- first_name: Julian
  full_name: Weller, Julian
  last_name: Weller
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: 'Weller J, Dumitrescu R. Decision-Driven Analytics in Smart Factories: Enterprise
    Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>.
    2025;14(21). doi:<a href="https://doi.org/10.3390/electronics14214271">10.3390/electronics14214271</a>'
  apa: 'Weller, J., &#38; Dumitrescu, R. (2025). Decision-Driven Analytics in Smart
    Factories: Enterprise Architecture Framework for Use Case Specification and Engineering
    (FUSE). <i>Electronics</i>, <i>14</i>(21), Article 4271. <a href="https://doi.org/10.3390/electronics14214271">https://doi.org/10.3390/electronics14214271</a>'
  bibtex: '@article{Weller_Dumitrescu_2025, title={Decision-Driven Analytics in Smart
    Factories: Enterprise Architecture Framework for Use Case Specification and Engineering
    (FUSE)}, volume={14}, DOI={<a href="https://doi.org/10.3390/electronics14214271">10.3390/electronics14214271</a>},
    number={214271}, journal={Electronics}, publisher={MDPI AG}, author={Weller, Julian
    and Dumitrescu, Roman}, year={2025} }'
  chicago: 'Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart
    Factories: Enterprise Architecture Framework for Use Case Specification and Engineering
    (FUSE).” <i>Electronics</i> 14, no. 21 (2025). <a href="https://doi.org/10.3390/electronics14214271">https://doi.org/10.3390/electronics14214271</a>.'
  ieee: 'J. Weller and R. Dumitrescu, “Decision-Driven Analytics in Smart Factories:
    Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE),”
    <i>Electronics</i>, vol. 14, no. 21, Art. no. 4271, 2025, doi: <a href="https://doi.org/10.3390/electronics14214271">10.3390/electronics14214271</a>.'
  mla: 'Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart
    Factories: Enterprise Architecture Framework for Use Case Specification and Engineering
    (FUSE).” <i>Electronics</i>, vol. 14, no. 21, 4271, MDPI AG, 2025, doi:<a href="https://doi.org/10.3390/electronics14214271">10.3390/electronics14214271</a>.'
  short: J. Weller, R. Dumitrescu, Electronics 14 (2025).
date_created: 2026-02-19T10:08:21Z
date_updated: 2026-02-19T10:08:54Z
department:
- _id: '563'
doi: 10.3390/electronics14214271
intvolume: '        14'
issue: '21'
language:
- iso: eng
publication: Electronics
publication_identifier:
  issn:
  - 2079-9292
publication_status: published
publisher: MDPI AG
status: public
title: 'Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework
  for Use Case Specification and Engineering (FUSE)'
type: journal_article
user_id: '15782'
volume: 14
year: '2025'
...
---
_id: '64252'
abstract:
- lang: eng
  text: <jats:title>ABSTRACT:</jats:title><jats:p>The increasing complexity of modern
    product and production system development, driven by dynamic market demands, supply
    chain disruptions and economic pressures, poses significant challenges for companies.
    Existing methodologies often fall short due to their domain-specific focus, inconsistent
    terminology and lack of integration. To address these challenges, this paper presents
    a taxonomy for integrative product and production system development. The taxonomy
    systematically structures key elements, dependencies and processes to improve
    collaboration, decision-making and communication within organisations. Developed
    iteratively the taxonomy identifies ten core artefacts. It enables organisations
    to better plan improvements, synchronise development processes, and select appropriate
    methods and tools.</jats:p>
author:
- first_name: Jan-Philipp
  full_name: Disselkamp, Jan-Philipp
  last_name: Disselkamp
- first_name: Tobias
  full_name: Seidenberg, Tobias
  last_name: Seidenberg
- first_name: Svenja
  full_name: Westphal, Svenja
  last_name: Westphal
- first_name: Jonas
  full_name: Lick, Jonas
  last_name: Lick
- first_name: Lukas
  full_name: Ptock, Lukas
  last_name: Ptock
- first_name: Fabian
  full_name: Wyrwich, Fabian
  last_name: Wyrwich
- first_name: Aschot
  full_name: Hovemann, Aschot
  last_name: Hovemann
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: 'Disselkamp J-P, Seidenberg T, Westphal S, et al. Integrative and Integrated
    product and production system development: a taxonomy for managing dependencies
    and processes. In: <i>Proceedings of the Design Society</i>. Vol 5. Cambridge
    University Press (CUP); 2025:2121-2130. doi:<a href="https://doi.org/10.1017/pds.2025.10226">10.1017/pds.2025.10226</a>'
  apa: 'Disselkamp, J.-P., Seidenberg, T., Westphal, S., Lick, J., Ptock, L., Wyrwich,
    F., Hovemann, A., &#38; Dumitrescu, R. (2025). Integrative and Integrated product
    and production system development: a taxonomy for managing dependencies and processes.
    <i>Proceedings of the Design Society</i>, <i>5</i>, 2121–2130. <a href="https://doi.org/10.1017/pds.2025.10226">https://doi.org/10.1017/pds.2025.10226</a>'
  bibtex: '@inproceedings{Disselkamp_Seidenberg_Westphal_Lick_Ptock_Wyrwich_Hovemann_Dumitrescu_2025,
    title={Integrative and Integrated product and production system development: a
    taxonomy for managing dependencies and processes}, volume={5}, DOI={<a href="https://doi.org/10.1017/pds.2025.10226">10.1017/pds.2025.10226</a>},
    booktitle={Proceedings of the Design Society}, publisher={Cambridge University
    Press (CUP)}, author={Disselkamp, Jan-Philipp and Seidenberg, Tobias and Westphal,
    Svenja and Lick, Jonas and Ptock, Lukas and Wyrwich, Fabian and Hovemann, Aschot
    and Dumitrescu, Roman}, year={2025}, pages={2121–2130} }'
  chicago: 'Disselkamp, Jan-Philipp, Tobias Seidenberg, Svenja Westphal, Jonas Lick,
    Lukas Ptock, Fabian Wyrwich, Aschot Hovemann, and Roman Dumitrescu. “Integrative
    and Integrated Product and Production System Development: A Taxonomy for Managing
    Dependencies and Processes.” In <i>Proceedings of the Design Society</i>, 5:2121–30.
    Cambridge University Press (CUP), 2025. <a href="https://doi.org/10.1017/pds.2025.10226">https://doi.org/10.1017/pds.2025.10226</a>.'
  ieee: 'J.-P. Disselkamp <i>et al.</i>, “Integrative and Integrated product and production
    system development: a taxonomy for managing dependencies and processes,” in <i>Proceedings
    of the Design Society</i>, 2025, vol. 5, pp. 2121–2130, doi: <a href="https://doi.org/10.1017/pds.2025.10226">10.1017/pds.2025.10226</a>.'
  mla: 'Disselkamp, Jan-Philipp, et al. “Integrative and Integrated Product and Production
    System Development: A Taxonomy for Managing Dependencies and Processes.” <i>Proceedings
    of the Design Society</i>, vol. 5, Cambridge University Press (CUP), 2025, pp.
    2121–30, doi:<a href="https://doi.org/10.1017/pds.2025.10226">10.1017/pds.2025.10226</a>.'
  short: 'J.-P. Disselkamp, T. Seidenberg, S. Westphal, J. Lick, L. Ptock, F. Wyrwich,
    A. Hovemann, R. Dumitrescu, in: Proceedings of the Design Society, Cambridge University
    Press (CUP), 2025, pp. 2121–2130.'
date_created: 2026-02-19T10:03:40Z
date_updated: 2026-02-19T10:04:32Z
department:
- _id: '563'
doi: 10.1017/pds.2025.10226
intvolume: '         5'
language:
- iso: eng
page: 2121-2130
publication: Proceedings of the Design Society
publication_identifier:
  issn:
  - 2732-527X
publication_status: published
publisher: Cambridge University Press (CUP)
status: public
title: 'Integrative and Integrated product and production system development: a taxonomy
  for managing dependencies and processes'
type: conference
user_id: '15782'
volume: 5
year: '2025'
...
---
_id: '59517'
author:
- first_name: Jonas
  full_name: Lick, Jonas
  last_name: Lick
- first_name: Fiona
  full_name: Kattenstroth, Fiona
  last_name: Kattenstroth
- first_name: Malte
  full_name: Trienens, Malte
  last_name: Trienens
- first_name: Jan-Philipp
  full_name: Disselkamp, Jan-Philipp
  last_name: Disselkamp
- first_name: Arno
  full_name: Kühn, Arno
  last_name: Kühn
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: 'Lick J, Kattenstroth F, Trienens M, Disselkamp J-P, Kühn A, Dumitrescu R.
    Guidance on a Digital Factory Twin: Proposal for a Reference Architecture. In:
    <i>2024 IEEE International Conference on Technology Management, Operations and
    Decisions (ICTMOD)</i>. IEEE; 2025. doi:<a href="https://doi.org/10.1109/ictmod63116.2024.10878221">10.1109/ictmod63116.2024.10878221</a>'
  apa: 'Lick, J., Kattenstroth, F., Trienens, M., Disselkamp, J.-P., Kühn, A., &#38;
    Dumitrescu, R. (2025). Guidance on a Digital Factory Twin: Proposal for a Reference
    Architecture. <i>2024 IEEE International Conference on Technology Management,
    Operations and Decisions (ICTMOD)</i>. <a href="https://doi.org/10.1109/ictmod63116.2024.10878221">https://doi.org/10.1109/ictmod63116.2024.10878221</a>'
  bibtex: '@inproceedings{Lick_Kattenstroth_Trienens_Disselkamp_Kühn_Dumitrescu_2025,
    title={Guidance on a Digital Factory Twin: Proposal for a Reference Architecture},
    DOI={<a href="https://doi.org/10.1109/ictmod63116.2024.10878221">10.1109/ictmod63116.2024.10878221</a>},
    booktitle={2024 IEEE International Conference on Technology Management, Operations
    and Decisions (ICTMOD)}, publisher={IEEE}, author={Lick, Jonas and Kattenstroth,
    Fiona and Trienens, Malte and Disselkamp, Jan-Philipp and Kühn, Arno and Dumitrescu,
    Roman}, year={2025} }'
  chicago: 'Lick, Jonas, Fiona Kattenstroth, Malte Trienens, Jan-Philipp Disselkamp,
    Arno Kühn, and Roman Dumitrescu. “Guidance on a Digital Factory Twin: Proposal
    for a Reference Architecture.” In <i>2024 IEEE International Conference on Technology
    Management, Operations and Decisions (ICTMOD)</i>. IEEE, 2025. <a href="https://doi.org/10.1109/ictmod63116.2024.10878221">https://doi.org/10.1109/ictmod63116.2024.10878221</a>.'
  ieee: 'J. Lick, F. Kattenstroth, M. Trienens, J.-P. Disselkamp, A. Kühn, and R.
    Dumitrescu, “Guidance on a Digital Factory Twin: Proposal for a Reference Architecture,”
    2025, doi: <a href="https://doi.org/10.1109/ictmod63116.2024.10878221">10.1109/ictmod63116.2024.10878221</a>.'
  mla: 'Lick, Jonas, et al. “Guidance on a Digital Factory Twin: Proposal for a Reference
    Architecture.” <i>2024 IEEE International Conference on Technology Management,
    Operations and Decisions (ICTMOD)</i>, IEEE, 2025, doi:<a href="https://doi.org/10.1109/ictmod63116.2024.10878221">10.1109/ictmod63116.2024.10878221</a>.'
  short: 'J. Lick, F. Kattenstroth, M. Trienens, J.-P. Disselkamp, A. Kühn, R. Dumitrescu,
    in: 2024 IEEE International Conference on Technology Management, Operations and
    Decisions (ICTMOD), IEEE, 2025.'
date_created: 2025-04-11T13:01:18Z
date_updated: 2026-02-19T10:18:11Z
department:
- _id: '563'
doi: 10.1109/ictmod63116.2024.10878221
language:
- iso: eng
publication: 2024 IEEE International Conference on Technology Management, Operations
  and Decisions (ICTMOD)
publication_status: published
publisher: IEEE
status: public
title: 'Guidance on a Digital Factory Twin: Proposal for a Reference Architecture'
type: conference
user_id: '15782'
year: '2025'
...
---
_id: '61121'
author:
- first_name: Volker
  full_name: Peckhaus, Volker
  id: '391'
  last_name: Peckhaus
citation:
  ama: Peckhaus V. Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung
    von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der
    Mathematik 18 (2024), 155–175. <i>zbMATH Open, Zbl 08058231</i>. Published online
    2025.
  apa: Peckhaus, V. (2025). Franke-Reddig, Julia, „Bernard Bolzano im Kontext der
    Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte
    und Philosophie der Mathematik 18 (2024), 155–175. In <i>zbMATH Open, Zbl. 08058231</i>.
  bibtex: '@article{Peckhaus_2025, title={Franke-Reddig, Julia, „Bernard Bolzano im
    Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge
    zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175}, journal={zbMATH
    Open, Zbl. 08058231}, author={Peckhaus, Volker}, year={2025} }'
  chicago: Peckhaus, Volker. “Franke-Reddig, Julia, „Bernard Bolzano Im Kontext Der
    Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge Zur Geschichte
    Und Philosophie Der Mathematik 18 (2024), 155–175.” <i>ZbMATH Open, Zbl. 08058231</i>,
    2025.
  ieee: V. Peckhaus, “Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung
    von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der
    Mathematik 18 (2024), 155–175,” <i>zbMATH Open, Zbl. 08058231</i>. 2025.
  mla: Peckhaus, Volker. “Franke-Reddig, Julia, „Bernard Bolzano Im Kontext Der Logikgeschichtsschreibung
    von Heinrich Scholz“, SieB. Siegener Beiträge Zur Geschichte Und Philosophie Der
    Mathematik 18 (2024), 155–175.” <i>ZbMATH Open, Zbl. 08058231</i>, 2025.
  short: V. Peckhaus, ZbMATH Open, Zbl. 08058231 (2025).
date_created: 2025-09-03T13:56:07Z
date_updated: 2026-02-19T10:10:27Z
department:
- _id: '520'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://zbmath.org/8058231
oa: '1'
publication: zbMATH Open, Zbl. 08058231
status: public
title: Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung
  von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der
  Mathematik 18 (2024), 155–175
type: review
user_id: '14972'
year: '2025'
...
---
_id: '64254'
author:
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
- first_name: Oliver
  full_name: Riedel, Oliver
  last_name: Riedel
- first_name: Michael
  full_name: Henke, Michael
  last_name: Henke
- first_name: Joachim
  full_name: Metternich, Joachim
  last_name: Metternich
- first_name: Steffen
  full_name: Ihlenfeldt, Steffen
  last_name: Ihlenfeldt
- first_name: Christian
  full_name: Koldewey, Christian
  id: '43136'
  last_name: Koldewey
  orcid: https://orcid.org/0000-0001-7992-6399
citation:
  ama: 'Dumitrescu R, Riedel O, Henke M, Metternich J, Ihlenfeldt S, Koldewey C. Gaia-X
    in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X.
    In: <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der
    Förderlinie InGAIA-X</i>. VDI Verlag; 2025. doi:<a href="https://doi.org/10.51202/9783186204165-i">10.51202/9783186204165-i</a>'
  apa: Dumitrescu, R., Riedel, O., Henke, M., Metternich, J., Ihlenfeldt, S., &#38;
    Koldewey, C. (2025). Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse
    aus der Förderlinie InGAIA-X. In <i>Gaia-X in industriellen Wertschöpfungsnetzwerken
    – Erkenntnisse aus der Förderlinie InGAIA-X</i>. VDI Verlag. <a href="https://doi.org/10.51202/9783186204165-i">https://doi.org/10.51202/9783186204165-i</a>
  bibtex: '@inbook{Dumitrescu_Riedel_Henke_Metternich_Ihlenfeldt_Koldewey_2025, title={Gaia-X
    in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X},
    DOI={<a href="https://doi.org/10.51202/9783186204165-i">10.51202/9783186204165-i</a>},
    booktitle={Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus
    der Förderlinie InGAIA-X}, publisher={VDI Verlag}, author={Dumitrescu, Roman and
    Riedel, Oliver and Henke, Michael and Metternich, Joachim and Ihlenfeldt, Steffen
    and Koldewey, Christian}, year={2025} }'
  chicago: Dumitrescu, Roman, Oliver Riedel, Michael Henke, Joachim Metternich, Steffen
    Ihlenfeldt, and Christian Koldewey. “Gaia-X in Industriellen Wertschöpfungsnetzwerken
    – Erkenntnisse Aus Der Förderlinie InGAIA-X.” In <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken
    – Erkenntnisse Aus Der Förderlinie InGAIA-X</i>. VDI Verlag, 2025. <a href="https://doi.org/10.51202/9783186204165-i">https://doi.org/10.51202/9783186204165-i</a>.
  ieee: R. Dumitrescu, O. Riedel, M. Henke, J. Metternich, S. Ihlenfeldt, and C. Koldewey,
    “Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie
    InGAIA-X,” in <i>Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse
    aus der Förderlinie InGAIA-X</i>, VDI Verlag, 2025.
  mla: Dumitrescu, Roman, et al. “Gaia-X in Industriellen Wertschöpfungsnetzwerken
    – Erkenntnisse Aus Der Förderlinie InGAIA-X.” <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken
    – Erkenntnisse Aus Der Förderlinie InGAIA-X</i>, VDI Verlag, 2025, doi:<a href="https://doi.org/10.51202/9783186204165-i">10.51202/9783186204165-i</a>.
  short: 'R. Dumitrescu, O. Riedel, M. Henke, J. Metternich, S. Ihlenfeldt, C. Koldewey,
    in: Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie
    InGAIA-X, VDI Verlag, 2025.'
date_created: 2026-02-19T10:16:30Z
date_updated: 2026-02-19T10:38:04Z
department:
- _id: '563'
doi: 10.51202/9783186204165-i
language:
- iso: eng
publication: Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der
  Förderlinie InGAIA-X
publication_identifier:
  isbn:
  - '9783186204165'
publication_status: published
publisher: VDI Verlag
status: public
title: Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie
  InGAIA-X
type: book_chapter
user_id: '15782'
year: '2025'
...
---
_id: '64256'
author:
- first_name: Anja
  full_name: Rasor, Anja
  id: '34415'
  last_name: Rasor
- first_name: Christian
  full_name: Koldewey, Christian
  id: '43136'
  last_name: Koldewey
  orcid: https://orcid.org/0000-0001-7992-6399
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
citation:
  ama: Rasor A, Koldewey C, Dumitrescu R. Mit digitalen Hebeln zur Kreislaufwirtschaft.
    <i>Nachhaltige Industrie</i>. 2025;6(2):40-43. doi:<a href="https://doi.org/10.1007/s43462-025-1406-x">10.1007/s43462-025-1406-x</a>
  apa: Rasor, A., Koldewey, C., &#38; Dumitrescu, R. (2025). Mit digitalen Hebeln
    zur Kreislaufwirtschaft. <i>Nachhaltige Industrie</i>, <i>6</i>(2), 40–43. <a
    href="https://doi.org/10.1007/s43462-025-1406-x">https://doi.org/10.1007/s43462-025-1406-x</a>
  bibtex: '@article{Rasor_Koldewey_Dumitrescu_2025, title={Mit digitalen Hebeln zur
    Kreislaufwirtschaft}, volume={6}, DOI={<a href="https://doi.org/10.1007/s43462-025-1406-x">10.1007/s43462-025-1406-x</a>},
    number={2}, journal={Nachhaltige Industrie}, publisher={Springer Science and Business
    Media LLC}, author={Rasor, Anja and Koldewey, Christian and Dumitrescu, Roman},
    year={2025}, pages={40–43} }'
  chicago: 'Rasor, Anja, Christian Koldewey, and Roman Dumitrescu. “Mit digitalen
    Hebeln zur Kreislaufwirtschaft.” <i>Nachhaltige Industrie</i> 6, no. 2 (2025):
    40–43. <a href="https://doi.org/10.1007/s43462-025-1406-x">https://doi.org/10.1007/s43462-025-1406-x</a>.'
  ieee: 'A. Rasor, C. Koldewey, and R. Dumitrescu, “Mit digitalen Hebeln zur Kreislaufwirtschaft,”
    <i>Nachhaltige Industrie</i>, vol. 6, no. 2, pp. 40–43, 2025, doi: <a href="https://doi.org/10.1007/s43462-025-1406-x">10.1007/s43462-025-1406-x</a>.'
  mla: Rasor, Anja, et al. “Mit digitalen Hebeln zur Kreislaufwirtschaft.” <i>Nachhaltige
    Industrie</i>, vol. 6, no. 2, Springer Science and Business Media LLC, 2025, pp.
    40–43, doi:<a href="https://doi.org/10.1007/s43462-025-1406-x">10.1007/s43462-025-1406-x</a>.
  short: A. Rasor, C. Koldewey, R. Dumitrescu, Nachhaltige Industrie 6 (2025) 40–43.
date_created: 2026-02-19T10:23:05Z
date_updated: 2026-02-19T10:25:05Z
department:
- _id: '563'
doi: 10.1007/s43462-025-1406-x
intvolume: '         6'
issue: '2'
language:
- iso: ger
page: 40-43
publication: Nachhaltige Industrie
publication_identifier:
  issn:
  - 2662-7493
  - 2662-7507
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Mit digitalen Hebeln zur Kreislaufwirtschaft
type: journal_article
user_id: '15782'
volume: 6
year: '2025'
...
---
_id: '64257'
citation:
  ama: Dumitrescu R, Hölzle K, eds. <i>Vorausschau Und Technologieplanung - 19. Symposium
    Für Vorausschau Und Technologieplanung</i>. Verlagsschriftenreihe des Heinz Nixdorf
    Instituts; 2025. doi:<a href="https://doi.org/10.17619/UNIPB/1-2467">10.17619/UNIPB/1-2467</a>
  apa: Dumitrescu, R., &#38; Hölzle, K. (Eds.). (2025). <i>Vorausschau und Technologieplanung
    - 19. Symposium für Vorausschau und Technologieplanung</i>. Verlagsschriftenreihe
    des Heinz Nixdorf Instituts. <a href="https://doi.org/10.17619/UNIPB/1-2467">https://doi.org/10.17619/UNIPB/1-2467</a>
  bibtex: '@book{Dumitrescu_Hölzle_2025, place={Paderborn}, title={Vorausschau und
    Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung}, DOI={<a
    href="https://doi.org/10.17619/UNIPB/1-2467">10.17619/UNIPB/1-2467</a>}, publisher={Verlagsschriftenreihe
    des Heinz Nixdorf Instituts}, year={2025} }'
  chicago: 'Dumitrescu, Roman, and Katharina Hölzle, eds. <i>Vorausschau Und Technologieplanung
    - 19. Symposium Für Vorausschau Und Technologieplanung</i>. Paderborn: Verlagsschriftenreihe
    des Heinz Nixdorf Instituts, 2025. <a href="https://doi.org/10.17619/UNIPB/1-2467">https://doi.org/10.17619/UNIPB/1-2467</a>.'
  ieee: 'R. Dumitrescu and K. Hölzle, Eds., <i>Vorausschau und Technologieplanung
    - 19. Symposium für Vorausschau und Technologieplanung</i>. Paderborn: Verlagsschriftenreihe
    des Heinz Nixdorf Instituts, 2025.'
  mla: Dumitrescu, Roman, and Katharina Hölzle, editors. <i>Vorausschau Und Technologieplanung
    - 19. Symposium Für Vorausschau Und Technologieplanung</i>. Verlagsschriftenreihe
    des Heinz Nixdorf Instituts, 2025, doi:<a href="https://doi.org/10.17619/UNIPB/1-2467">10.17619/UNIPB/1-2467</a>.
  short: R. Dumitrescu, K. Hölzle, eds., Vorausschau Und Technologieplanung - 19.
    Symposium Für Vorausschau Und Technologieplanung, Verlagsschriftenreihe des Heinz
    Nixdorf Instituts, Paderborn, 2025.
date_created: 2026-02-19T10:36:46Z
date_updated: 2026-02-19T10:37:27Z
department:
- _id: '563'
doi: 10.17619/UNIPB/1-2467
editor:
- first_name: Roman
  full_name: Dumitrescu, Roman
  id: '16190'
  last_name: Dumitrescu
- first_name: Katharina
  full_name: Hölzle, Katharina
  last_name: Hölzle
language:
- iso: eng
place: Paderborn
publisher: Verlagsschriftenreihe des Heinz Nixdorf Instituts
status: public
title: Vorausschau und Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung
type: conference_editor
user_id: '15782'
year: '2025'
...
---
_id: '64267'
abstract:
- lang: eng
  text: "Let $\\mathbb{H}^n$ be the $n$-dimensional real hyperbolic space, $Δ$ its
    nonnegative Laplace--Beltrami operator whose bottom of the spectrum we denote
    by $λ_{0}$, and $σ\\in (0,1)$.\r\n  The aim of this paper is twofold. On the one
    hand, we determine the Fujita exponent for the fractional heat equation \\[\\partial_{t}
    u + Δ^σu = e^{βt}|u|^{γ-1}u,\\] by proving that nontrivial positive global solutions
    exist if and only if $γ\\geq 1 + β/ λ_{0}^σ$. On the other hand, we prove the
    existence of non-negative, bounded and finite energy solutions of the semilinear
    fractional elliptic equation \\[\r\n  Δ^σ v - λ^σ v - v^γ=0 \\] for $0\\leq λ\\leq
    λ_{0}$ and $1<γ< \\frac{n+2σ}{n-2σ}$. The two problems are known to be connected
    and the latter, aside from its independent interest, is actually instrumental
    to the former.\r\n  \\smallskip\r\n  At the core of our results stands a novel
    fractional Poincaré-type inequality expressed in terms of a new scale of $L^{2}$
    fractional Sobolev spaces, which sharpens those known so far, and which holds
    more generally on Riemannian symmetric spaces of non-compact type. We also establish
    an associated Rellich--Kondrachov-like compact embedding theorem for radial functions,
    along with other related properties."
author:
- first_name: Tommaso
  full_name: Bruno, Tommaso
  last_name: Bruno
- first_name: Effie
  full_name: Papageorgiou, Effie
  last_name: Papageorgiou
citation:
  ama: Bruno T, Papageorgiou E. Blow-up exponents and a semilinear elliptic equation
    for the fractional Laplacian on hyperbolic spaces. <i>arXiv:250912349</i>. Published
    online 2025.
  apa: Bruno, T., &#38; Papageorgiou, E. (2025). Blow-up exponents and a semilinear
    elliptic equation for the fractional Laplacian on hyperbolic spaces. In <i>arXiv:2509.12349</i>.
  bibtex: '@article{Bruno_Papageorgiou_2025, title={Blow-up exponents and a semilinear
    elliptic equation for the fractional Laplacian on hyperbolic spaces}, journal={arXiv:2509.12349},
    author={Bruno, Tommaso and Papageorgiou, Effie}, year={2025} }'
  chicago: Bruno, Tommaso, and Effie Papageorgiou. “Blow-up Exponents and a Semilinear
    Elliptic Equation for the Fractional Laplacian on Hyperbolic Spaces.” <i>ArXiv:2509.12349</i>,
    2025.
  ieee: T. Bruno and E. Papageorgiou, “Blow-up exponents and a semilinear elliptic
    equation for the fractional Laplacian on hyperbolic spaces,” <i>arXiv:2509.12349</i>.
    2025.
  mla: Bruno, Tommaso, and Effie Papageorgiou. “Blow-up Exponents and a Semilinear
    Elliptic Equation for the Fractional Laplacian on Hyperbolic Spaces.” <i>ArXiv:2509.12349</i>,
    2025.
  short: T. Bruno, E. Papageorgiou, ArXiv:2509.12349 (2025).
date_created: 2026-02-19T11:42:22Z
date_updated: 2026-02-19T11:43:16Z
external_id:
  arxiv:
  - '2509.12349'
language:
- iso: eng
project:
- _id: '357'
  name: 'TRR 358: Ganzzahlige Strukturen in Geometrie und Darstellungstheorie'
publication: arXiv:2509.12349
status: public
title: Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian
  on hyperbolic spaces
type: preprint
user_id: '100325'
year: '2025'
...
---
_id: '64266'
abstract:
- lang: eng
  text: We study the large-time asymptotic behavior of solutions to the discrete-time
    heat equation, i.e., caloric functions, on affine buildings, including those without
    transitive group actions. For each $p \in [1, \infty]$, we introduce a notion
    of a $p$-mass function and prove that caloric functions with initial data belonging
    to certain weighted-$\ell^1$ spaces or to the radial $\ell^1$ class, asymptotically
    decouple as the product of this mass function and the heat kernel. These results
    extend classical analogues from Euclidean spaces and symmetric spaces of non-compact
    type to the non-Archimedean setting, and remain valid even for exotic buildings
    beyond the Bruhat--Tits framework. We characterize the spatial concentration of
    heat kernels in $p$-norms and describe the geometry of associated critical regions.
    Our results highlight substantial differences in the asymptotic regimes depending
    on the value of $p$, and clarify the interplay between volume growth and heat
    diffusion.
author:
- first_name: Effie
  full_name: Papageorgiou, Effie
  last_name: Papageorgiou
- first_name: Bartosz
  full_name: Trojan, Bartosz
  last_name: Trojan
citation:
  ama: Papageorgiou E, Trojan B. Mass Functions and Asymptotic Behavior of Caloric
    Functions on Affine Buildings. <i>arXiv:250617042</i>. Published online 2025.
  apa: Papageorgiou, E., &#38; Trojan, B. (2025). Mass Functions and Asymptotic Behavior
    of Caloric Functions on Affine Buildings. In <i>arXiv:2506.17042</i>.
  bibtex: '@article{Papageorgiou_Trojan_2025, title={Mass Functions and Asymptotic
    Behavior of Caloric Functions on Affine Buildings}, journal={arXiv:2506.17042},
    author={Papageorgiou, Effie and Trojan, Bartosz}, year={2025} }'
  chicago: Papageorgiou, Effie, and Bartosz Trojan. “Mass Functions and Asymptotic
    Behavior of Caloric Functions on Affine Buildings.” <i>ArXiv:2506.17042</i>, 2025.
  ieee: E. Papageorgiou and B. Trojan, “Mass Functions and Asymptotic Behavior of
    Caloric Functions on Affine Buildings,” <i>arXiv:2506.17042</i>. 2025.
  mla: Papageorgiou, Effie, and Bartosz Trojan. “Mass Functions and Asymptotic Behavior
    of Caloric Functions on Affine Buildings.” <i>ArXiv:2506.17042</i>, 2025.
  short: E. Papageorgiou, B. Trojan, ArXiv:2506.17042 (2025).
date_created: 2026-02-19T11:41:25Z
date_updated: 2026-02-19T11:43:53Z
external_id:
  arxiv:
  - '2506.17042'
language:
- iso: eng
project:
- _id: '357'
  name: 'TRR 358: Ganzzahlige Strukturen in Geometrie und Darstellungstheorie'
publication: arXiv:2506.17042
status: public
title: Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings
type: preprint
user_id: '100325'
year: '2025'
...
---
_id: '61932'
abstract:
- lang: eng
  text: <jats:p>Substantial improvements in the performance of optical interconnects
    based on multi-mode fibers are required to support emerging single-channel data
    transmission rates of 200 Gb/s and 400 Gb/s. Future optical components must combine
    very high modulation bandwidths—supporting signaling at 100 Gbaud and 200 Gbaud—with
    reduced spectral width to mitigate chromatic-dispersion-induced pulse broadening
    and increased brightness to further restrict flux-confining area in multi-mode
    fibers and thereby increase the effective modal bandwidth (EMB). A particularly
    promising route to improved performance within standard oxide-confined VCSEL technology
    is the introduction of multiple isolated or optically coupled oxide-confined apertures,
    which we refer to collectively as multi-aperture (MA) VCSEL arrays. We show that
    properly designed MA VCSELs exhibit narrow emission spectra, narrow far-field
    profiles and extended intrinsic modulation bandwidths, enabling longer-reach data
    transmission over both multi-mode (MMF) and single-mode fibers (SMF). One approach
    uses optically isolated apertures with lateral dimensions of approximately 2–3
    µm arranged with a pitch of 10–12 µm or less. Such devices demonstrate relaxation
    oscillation frequencies of around 30 GHz in continuous-wave operation and intrinsic
    modulation bandwidths approaching 50 GHz. Compared with a conventional single-aperture
    VCSELs of equivalent oxide-confined area, MA designs can reduce the spectral width
    (root mean square values &lt; 0.15 nm), lower series resistance (≈50 Ω) and limit
    junction overheating through more efficient multi-spot heat dissipation at the
    same total current. As each aperture lases in a single transverse mode, these
    devices exhibit narrow far-field patterns. In combination with well-defined spacing
    between emitting spots, they permit tailored restricted launch conditions in MMFs,
    enhancing effective modal bandwidth. In another MA approach, the apertures are
    optically coupled such that self-injection locking (SIL) leads to lasing in a
    single supermode. One may regard one of the supermodes as acting as a master mode
    controlling the other one. Streak-camera studies reveal post-pulse oscillations
    in the SIL regime at frequencies up to 100 GHz. MA VCSELs enable a favorable combination
    of wavelength chirp and chromatic dispersion, extending transmission distances
    over MMFs beyond those expected for zero-chirp sources and supporting transfer
    bandwidths up to 60 GHz over kilometer-length SMF links.</jats:p>
article_number: '1037'
author:
- first_name: Nikolay N.
  full_name: Ledentsov, Nikolay N.
  last_name: Ledentsov
- first_name: Nikolay
  full_name: Ledentsov, Nikolay
  last_name: Ledentsov
- first_name: Vitaly A.
  full_name: Shchukin, Vitaly A.
  last_name: Shchukin
- first_name: Alexander N.
  full_name: Ledentsov, Alexander N.
  last_name: Ledentsov
- first_name: Oleg Yu.
  full_name: Makarov, Oleg Yu.
  last_name: Makarov
- first_name: Ilya E.
  full_name: Titkov, Ilya E.
  last_name: Titkov
- first_name: Markus
  full_name: Lindemann, Markus
  last_name: Lindemann
- first_name: Thomas
  full_name: de Adelsburg Ettmayer, Thomas
  last_name: de Adelsburg Ettmayer
- first_name: Nils Christopher
  full_name: Gerhardt, Nils Christopher
  id: '115298'
  last_name: Gerhardt
  orcid: 0009-0002-5538-231X
- first_name: Martin R.
  full_name: Hofmann, Martin R.
  last_name: Hofmann
- first_name: Xin
  full_name: Chen, Xin
  last_name: Chen
- first_name: Jason E.
  full_name: Hurley, Jason E.
  last_name: Hurley
- first_name: Hao
  full_name: Dong, Hao
  last_name: Dong
- first_name: Ming-Jun
  full_name: Li, Ming-Jun
  last_name: Li
citation:
  ama: 'Ledentsov NN, Ledentsov N, Shchukin VA, et al. VCSELs: Influence of Design
    on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers. <i>Photonics</i>.
    2025;12(10). doi:<a href="https://doi.org/10.3390/photonics12101037">10.3390/photonics12101037</a>'
  apa: 'Ledentsov, N. N., Ledentsov, N., Shchukin, V. A., Ledentsov, A. N., Makarov,
    O. Yu., Titkov, I. E., Lindemann, M., de Adelsburg Ettmayer, T., Gerhardt, N.
    C., Hofmann, M. R., Chen, X., Hurley, J. E., Dong, H., &#38; Li, M.-J. (2025).
    VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode
    and Single-Mode Fibers. <i>Photonics</i>, <i>12</i>(10), Article 1037. <a href="https://doi.org/10.3390/photonics12101037">https://doi.org/10.3390/photonics12101037</a>'
  bibtex: '@article{Ledentsov_Ledentsov_Shchukin_Ledentsov_Makarov_Titkov_Lindemann_de
    Adelsburg Ettmayer_Gerhardt_Hofmann_et al._2025, title={VCSELs: Influence of Design
    on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers},
    volume={12}, DOI={<a href="https://doi.org/10.3390/photonics12101037">10.3390/photonics12101037</a>},
    number={101037}, journal={Photonics}, publisher={MDPI AG}, author={Ledentsov,
    Nikolay N. and Ledentsov, Nikolay and Shchukin, Vitaly A. and Ledentsov, Alexander
    N. and Makarov, Oleg Yu. and Titkov, Ilya E. and Lindemann, Markus and de Adelsburg
    Ettmayer, Thomas and Gerhardt, Nils Christopher and Hofmann, Martin R. and et
    al.}, year={2025} }'
  chicago: 'Ledentsov, Nikolay N., Nikolay Ledentsov, Vitaly A. Shchukin, Alexander
    N. Ledentsov, Oleg Yu. Makarov, Ilya E. Titkov, Markus Lindemann, et al. “VCSELs:
    Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode
    Fibers.” <i>Photonics</i> 12, no. 10 (2025). <a href="https://doi.org/10.3390/photonics12101037">https://doi.org/10.3390/photonics12101037</a>.'
  ieee: 'N. N. Ledentsov <i>et al.</i>, “VCSELs: Influence of Design on Performance
    and Data Transmission over Multi-Mode and Single-Mode Fibers,” <i>Photonics</i>,
    vol. 12, no. 10, Art. no. 1037, 2025, doi: <a href="https://doi.org/10.3390/photonics12101037">10.3390/photonics12101037</a>.'
  mla: 'Ledentsov, Nikolay N., et al. “VCSELs: Influence of Design on Performance
    and Data Transmission over Multi-Mode and Single-Mode Fibers.” <i>Photonics</i>,
    vol. 12, no. 10, 1037, MDPI AG, 2025, doi:<a href="https://doi.org/10.3390/photonics12101037">10.3390/photonics12101037</a>.'
  short: N.N. Ledentsov, N. Ledentsov, V.A. Shchukin, A.N. Ledentsov, O.Yu. Makarov,
    I.E. Titkov, M. Lindemann, T. de Adelsburg Ettmayer, N.C. Gerhardt, M.R. Hofmann,
    X. Chen, J.E. Hurley, H. Dong, M.-J. Li, Photonics 12 (2025).
date_created: 2025-10-23T10:59:59Z
date_updated: 2026-02-19T12:39:12Z
department:
- _id: '977'
doi: 10.3390/photonics12101037
intvolume: '        12'
issue: '10'
language:
- iso: eng
publication: Photonics
publication_identifier:
  issn:
  - 2304-6732
publication_status: published
publisher: MDPI AG
status: public
title: 'VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode
  and Single-Mode Fibers'
type: journal_article
user_id: '15911'
volume: 12
year: '2025'
...
---
_id: '61931'
abstract:
- lang: eng
  text: <jats:p>Recent research revealed that single-mode vertical-cavity surface-emitting
    lasers under spin injection (spin-VCSELs) have the potential to revolutionize
    laser technology for short-haul optical communications. While previous studies
    have focused solely on single-mode operation, this study introduces multimode
    spin-VCSELs. We experimentally demonstrate the existence of multi-resonant polarization
    dynamics when spin is injected, a phenomenon previously unobserved. The development
    opens the door to significantly faster and more efficient optical communication
    systems by harnessing the collective behavior of multiple laser modes. Furthermore,
    we lay the groundwork for understanding multimode operation through the extension
    of the single-mode spin–flip model, which forms the basis for present and future
    analyses of multimode spin-laser operation. This work is an important step toward
    realizing the full potential of spin-VCSELs and, thus, enables significantly improved
    performance of spin-VCSEL-based optical networks in the future.</jats:p>
article_number: '106120'
author:
- first_name: Uliana
  full_name: Diiankova, Uliana
  last_name: Diiankova
- first_name: Mariusz
  full_name: Drong, Mariusz
  last_name: Drong
- first_name: Tobias
  full_name: Pusch, Tobias
  last_name: Pusch
- first_name: Rainer
  full_name: Michalzik, Rainer
  last_name: Michalzik
- first_name: Markus
  full_name: Lindemann, Markus
  last_name: Lindemann
- first_name: Nils Christopher
  full_name: Gerhardt, Nils Christopher
  id: '115298'
  last_name: Gerhardt
  orcid: 0009-0002-5538-231X
- first_name: Martin R.
  full_name: Hofmann, Martin R.
  last_name: Hofmann
citation:
  ama: Diiankova U, Drong M, Pusch T, et al. Multimode vertical-cavity surface-emitting
    lasers under spin injection. <i>APL Photonics</i>. 2025;10(10). doi:<a href="https://doi.org/10.1063/5.0286998">10.1063/5.0286998</a>
  apa: Diiankova, U., Drong, M., Pusch, T., Michalzik, R., Lindemann, M., Gerhardt,
    N. C., &#38; Hofmann, M. R. (2025). Multimode vertical-cavity surface-emitting
    lasers under spin injection. <i>APL Photonics</i>, <i>10</i>(10), Article 106120.
    <a href="https://doi.org/10.1063/5.0286998">https://doi.org/10.1063/5.0286998</a>
  bibtex: '@article{Diiankova_Drong_Pusch_Michalzik_Lindemann_Gerhardt_Hofmann_2025,
    title={Multimode vertical-cavity surface-emitting lasers under spin injection},
    volume={10}, DOI={<a href="https://doi.org/10.1063/5.0286998">10.1063/5.0286998</a>},
    number={10106120}, journal={APL Photonics}, publisher={AIP Publishing}, author={Diiankova,
    Uliana and Drong, Mariusz and Pusch, Tobias and Michalzik, Rainer and Lindemann,
    Markus and Gerhardt, Nils Christopher and Hofmann, Martin R.}, year={2025} }'
  chicago: Diiankova, Uliana, Mariusz Drong, Tobias Pusch, Rainer Michalzik, Markus
    Lindemann, Nils Christopher Gerhardt, and Martin R. Hofmann. “Multimode Vertical-Cavity
    Surface-Emitting Lasers under Spin Injection.” <i>APL Photonics</i> 10, no. 10
    (2025). <a href="https://doi.org/10.1063/5.0286998">https://doi.org/10.1063/5.0286998</a>.
  ieee: 'U. Diiankova <i>et al.</i>, “Multimode vertical-cavity surface-emitting lasers
    under spin injection,” <i>APL Photonics</i>, vol. 10, no. 10, Art. no. 106120,
    2025, doi: <a href="https://doi.org/10.1063/5.0286998">10.1063/5.0286998</a>.'
  mla: Diiankova, Uliana, et al. “Multimode Vertical-Cavity Surface-Emitting Lasers
    under Spin Injection.” <i>APL Photonics</i>, vol. 10, no. 10, 106120, AIP Publishing,
    2025, doi:<a href="https://doi.org/10.1063/5.0286998">10.1063/5.0286998</a>.
  short: U. Diiankova, M. Drong, T. Pusch, R. Michalzik, M. Lindemann, N.C. Gerhardt,
    M.R. Hofmann, APL Photonics 10 (2025).
date_created: 2025-10-23T10:52:59Z
date_updated: 2026-02-19T12:39:00Z
department:
- _id: '977'
doi: 10.1063/5.0286998
intvolume: '        10'
issue: '10'
language:
- iso: eng
publication: APL Photonics
publication_identifier:
  issn:
  - 2378-0967
publication_status: published
publisher: AIP Publishing
status: public
title: Multimode vertical-cavity surface-emitting lasers under spin injection
type: journal_article
user_id: '15911'
volume: 10
year: '2025'
...
---
_id: '56717'
abstract:
- lang: eng
  text: "We establish a multiresolution analysis on the space $\\text{Herm}(n)$ of\r\n$n\\times
    n$ complex Hermitian matrices which is adapted to invariance under\r\nconjugation
    by the unitary group $U(n).$ The orbits under this action are\r\nparametrized
    by the possible ordered spectra of Hermitian matrices, which\r\nconstitute a closed
    Weyl chamber of type $A_{n-1}$ in $\\mathbb R^n.$ The space\r\n$L^2(\\text{Herm}(n))^{U(n)}$
    of radial, i.e. $U(n)$-invariant $L^2$-functions\r\non $\\text{Herm}(n)$ is naturally
    identified with a certain weighted $L^2$-space\r\non this chamber.\r\n  The scale
    spaces of our multiresolution analysis are obtained by usual dyadic\r\ndilations
    as well as generalized translations of a scaling function, where the\r\ngeneralized
    translation is a hypergroup translation which respects the radial\r\ngeometry.
    We provide a concise criterion to characterize orthonormal wavelet\r\nbases and
    show that such bases always exist. They provide natural orthonormal\r\nbases of
    the space $L^2(\\text{Herm}(n))^{U(n)}.$\r\n  Furthermore, we show how to obtain
    radial scaling functions from classical\r\nscaling functions on $\\mathbb R^{n}$.
    Finally, generalizations related to the\r\nCartan decompositions for general compact
    Lie groups are indicated."
article_type: original
author:
- first_name: Lukas
  full_name: Langen, Lukas
  id: '73664'
  last_name: Langen
- first_name: Margit
  full_name: Rösler, Margit
  id: '37390'
  last_name: Rösler
citation:
  ama: Langen L, Rösler M. Multiresolution analysis on spectra of hermitian matrices.
    <i>Indagationes Mathematicae</i>. 2025;36(6):1671-1694.
  apa: Langen, L., &#38; Rösler, M. (2025). Multiresolution analysis on spectra of
    hermitian matrices. <i>Indagationes Mathematicae</i>, <i>36</i>(6), 1671–1694.
  bibtex: '@article{Langen_Rösler_2025, title={Multiresolution analysis on spectra
    of hermitian matrices}, volume={36}, number={6}, journal={Indagationes Mathematicae},
    publisher={Elsevier}, author={Langen, Lukas and Rösler, Margit}, year={2025},
    pages={1671–1694} }'
  chicago: 'Langen, Lukas, and Margit Rösler. “Multiresolution Analysis on Spectra
    of Hermitian Matrices.” <i>Indagationes Mathematicae</i> 36, no. 6 (2025): 1671–94.'
  ieee: L. Langen and M. Rösler, “Multiresolution analysis on spectra of hermitian
    matrices,” <i>Indagationes Mathematicae</i>, vol. 36, no. 6, pp. 1671–1694, 2025.
  mla: Langen, Lukas, and Margit Rösler. “Multiresolution Analysis on Spectra of Hermitian
    Matrices.” <i>Indagationes Mathematicae</i>, vol. 36, no. 6, Elsevier, 2025, pp.
    1671–94.
  short: L. Langen, M. Rösler, Indagationes Mathematicae 36 (2025) 1671–1694.
date_created: 2024-10-22T09:31:19Z
date_updated: 2026-02-19T14:16:43Z
ddc:
- '510'
department:
- _id: '555'
external_id:
  arxiv:
  - '2410.10364'
file:
- access_level: closed
  content_type: application/pdf
  creator: llangen
  date_created: 2026-02-19T14:14:39Z
  date_updated: 2026-02-19T14:14:39Z
  file_id: '64288'
  file_name: MSA_hermitsch_published.pdf
  file_size: 443262
  relation: main_file
  success: 1
file_date_updated: 2026-02-19T14:14:39Z
has_accepted_license: '1'
intvolume: '        36'
issue: '6'
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.1016/j.indag.2025.03.009
page: 1671-1694
project:
- _id: '357'
  name: TRR 358 - Ganzzahlige Strukturen in Geometrie und Darstellungstheorie
publication: Indagationes Mathematicae
publication_status: published
publisher: Elsevier
related_material:
  link:
  - relation: research_paper
    url: https://arxiv.org/abs/2410.10364
status: public
title: Multiresolution analysis on spectra of hermitian matrices
type: journal_article
user_id: '73664'
volume: 36
year: '2025'
...
---
_id: '64287'
abstract:
- lang: eng
  text: The Casselman-Wallach theorem is a foundational result in the theory of representations
    of real reductive groups connecting algebraic representations to topological representations.
    We provide a quantitative version of this theorem. For that we introduce the notion
    of {\it Sobolev gap} for a Harish-Chandra module. This is a new invariant whose
    finiteness is highly non-trivial. We determine the Sobolev gap for representations
    in the unitary dual of the group $\SL(2,\R)$ and establish uniform finiteness
    results in general for representations of the discrete series and the minimal
    principal series. We use these notions to reformulate and extend classical results
    of Bernstein and Reznikov concerning automorphic functionals with respect to cocompact
    lattices. In particular, we prove an abstract convexity bound which applies to
    automorphic functionals with respect to general lattices in $\SL(2,\R)$ and is
    independent of the type of unitarizable irreducible Harish-Chandra module. Finally,
    we offer an extensive list of open problems.
author:
- first_name: Joseph
  full_name: Bernstein, Joseph
  last_name: Bernstein
- first_name: Pritam
  full_name: Ganguly, Pritam
  last_name: Ganguly
- first_name: Bernhard
  full_name: Krötz, Bernhard
  last_name: Krötz
- first_name: Job
  full_name: Kuit, Job
  last_name: Kuit
- first_name: Eitan
  full_name: Sayag, Eitan
  last_name: Sayag
citation:
  ama: Bernstein J, Ganguly P, Krötz B, Kuit J, Sayag E. On norms on Harish-Chandra
    modules.
  apa: Bernstein, J., Ganguly, P., Krötz, B., Kuit, J., &#38; Sayag, E. (n.d.). <i>On
    norms on Harish-Chandra modules</i>.
  bibtex: '@article{Bernstein_Ganguly_Krötz_Kuit_Sayag, title={On norms on Harish-Chandra
    modules}, author={Bernstein, Joseph and Ganguly, Pritam and Krötz, Bernhard and
    Kuit, Job and Sayag, Eitan} }'
  chicago: Bernstein, Joseph, Pritam Ganguly, Bernhard Krötz, Job Kuit, and Eitan
    Sayag. “On Norms on Harish-Chandra Modules,” n.d.
  ieee: J. Bernstein, P. Ganguly, B. Krötz, J. Kuit, and E. Sayag, “On norms on Harish-Chandra
    modules.” .
  mla: Bernstein, Joseph, et al. <i>On Norms on Harish-Chandra Modules</i>.
  short: J. Bernstein, P. Ganguly, B. Krötz, J. Kuit, E. Sayag, (n.d.).
date_created: 2026-02-19T13:48:26Z
date_updated: 2026-02-19T13:49:37Z
language:
- iso: eng
publication_status: submitted
status: public
title: On norms on Harish-Chandra modules
type: preprint
user_id: '52730'
year: '2025'
...
---
_id: '64289'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n          <jats:p>Motivated by asymptotic
    symmetry groups in general relativity, we consider projective unitary representations
    <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\overline{\\rho
    }$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mover>\r\n                    <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n
    \                 </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula> of the Lie group <jats:inline-formula>\r\n
    \             <jats:alternatives>\r\n                <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)$$</jats:tex-math>\r\n
    \               <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n
    \                       <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n
    \                       <mml:mspace/>\r\n                      </mml:mrow>\r\n
    \                     <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n
    \                   <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n
    \                     <mml:mi>M</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                   </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula> of compactly
    supported diffeomorphisms of a smooth manifold <jats:italic>M</jats:italic> that
    satisfy a so-called generalized positive energy condition. In particular, this
    captures representations that are in a suitable sense compatible with a KMS state
    on the von Neumann algebra generated by <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$\\overline{\\rho }$$</jats:tex-math>\r\n                <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mover>\r\n
    \                   <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n
    \                 </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula>. We show that if <jats:italic>M</jats:italic>
    is connected and <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$\\dim (M) &gt; 1$$</jats:tex-math>\r\n                <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n
    \                   <mml:mo>dim</mml:mo>\r\n                    <mml:mo>(</mml:mo>\r\n
    \                   <mml:mi>M</mml:mi>\r\n                    <mml:mo>)</mml:mo>\r\n
    \                   <mml:mo>&gt;</mml:mo>\r\n                    <mml:mn>1</mml:mn>\r\n
    \                 </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula>, then any such representation is necessarily
    trivial on the identity component <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)_0$$</jats:tex-math>\r\n
    \               <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n
    \                       <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n
    \                       <mml:mspace/>\r\n                      </mml:mrow>\r\n
    \                     <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n
    \                   <mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n
    \                       <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n
    \                     </mml:mrow>\r\n                      <mml:mn>0</mml:mn>\r\n
    \                   </mml:msub>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula>. As an
    intermediate step towards this result, we determine the continuous second Lie
    algebra cohomology <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$H^2_\\textrm{ct}(\\mathcal {X}_c(M), \\mathbb
    {R})$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msubsup>\r\n                      <mml:mi>H</mml:mi>\r\n
    \                     <mml:mtext>ct</mml:mtext>\r\n                      <mml:mn>2</mml:mn>\r\n
    \                   </mml:msubsup>\r\n                    <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n
    \                     <mml:msub>\r\n                        <mml:mi>X</mml:mi>\r\n
    \                       <mml:mi>c</mml:mi>\r\n                      </mml:msub>\r\n
    \                     <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n
    \                       <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n
    \                     </mml:mrow>\r\n                      <mml:mo>,</mml:mo>\r\n
    \                     <mml:mi>R</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                   </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula> of the
    Lie algebra of compactly supported vector fields. This is subtly different from
    Gelfand–Fuks cohomology in view of the compact support condition.</jats:p>"
article_number: '45'
author:
- first_name: Bas
  full_name: Janssens, Bas
  last_name: Janssens
- first_name: Milan
  full_name: Niestijl, Milan
  last_name: Niestijl
citation:
  ama: Janssens B, Niestijl M. Generalized Positive Energy Representations of the
    Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical
    Physics</i>. 2025;406(2). doi:<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>
  apa: Janssens, B., &#38; Niestijl, M. (2025). Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical
    Physics</i>, <i>406</i>(2), Article 45. <a href="https://doi.org/10.1007/s00220-024-05226-w">https://doi.org/10.1007/s00220-024-05226-w</a>
  bibtex: '@article{Janssens_Niestijl_2025, title={Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms}, volume={406}, DOI={<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>},
    number={245}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Janssens, Bas and Niestijl, Milan}, year={2025}
    }'
  chicago: Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical
    Physics</i> 406, no. 2 (2025). <a href="https://doi.org/10.1007/s00220-024-05226-w">https://doi.org/10.1007/s00220-024-05226-w</a>.
  ieee: 'B. Janssens and M. Niestijl, “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms,” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 2, Art. no. 45, 2025, doi: <a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>.'
  mla: Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 2, 45, Springer Science and Business Media LLC, 2025,
    doi:<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>.
  short: B. Janssens, M. Niestijl, Communications in Mathematical Physics 406 (2025).
date_created: 2026-02-20T09:33:11Z
date_updated: 2026-02-20T09:41:41Z
department:
- _id: '93'
doi: 10.1007/s00220-024-05226-w
intvolume: '       406'
issue: '2'
language:
- iso: eng
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Generalized Positive Energy Representations of the Group of Compactly Supported
  Diffeomorphisms
type: journal_article
user_id: '104095'
volume: 406
year: '2025'
...
---
_id: '62172'
author:
- first_name: Stephan Matthias
  full_name: Kokew, Stephan Matthias
  id: '111362'
  last_name: Kokew
  orcid: 0009-0005-6980-2727
citation:
  ama: Kokew SM. <i>Ressourcen für Resilienz in islamischer Tradition. Theologische,
    ethische und mystische Perspektiven</i>. Vol 2/2025. Aschendorff; 2025:88-89.
  apa: Kokew, S. M. (2025). <i>Ressourcen für Resilienz in islamischer Tradition.
    Theologische, ethische und mystische Perspektiven</i> (Vol. 2/2025, pp. 88–89).
    Aschendorff.
  bibtex: '@book{Kokew_2025, place={Münster}, series={CIBEDO-BEITRÄGE}, title={Ressourcen
    für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven},
    volume={2/2025}, publisher={Aschendorff}, author={Kokew, Stephan Matthias}, year={2025},
    pages={88–89}, collection={CIBEDO-BEITRÄGE} }'
  chicago: 'Kokew, Stephan Matthias. <i>Ressourcen für Resilienz in islamischer Tradition.
    Theologische, ethische und mystische Perspektiven</i>. Vol. 2/2025. CIBEDO-BEITRÄGE.
    Münster: Aschendorff, 2025.'
  ieee: 'S. M. Kokew, <i>Ressourcen für Resilienz in islamischer Tradition. Theologische,
    ethische und mystische Perspektiven</i>, vol. 2/2025. Münster: Aschendorff, 2025,
    pp. 88–89.'
  mla: Kokew, Stephan Matthias. <i>Ressourcen für Resilienz in islamischer Tradition.
    Theologische, ethische und mystische Perspektiven</i>. Aschendorff, 2025, pp.
    88–89.
  short: S.M. Kokew, Ressourcen für Resilienz in islamischer Tradition. Theologische,
    ethische und mystische Perspektiven, Aschendorff, Münster, 2025.
date_created: 2025-11-12T21:25:04Z
date_updated: 2026-02-19T18:51:47Z
department:
- _id: '469'
language:
- iso: ger
page: 88-89
place: Münster
publication_identifier:
  issn:
  - 1864-9483
publication_status: published
publisher: Aschendorff
series_title: CIBEDO-BEITRÄGE
status: public
title: Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und
  mystische Perspektiven
type: report
user_id: '111362'
volume: 2/2025
year: '2025'
...
---
_id: '59910'
abstract:
- lang: eng
  text: <jats:p>The connection between inconsistent databases and Dung’s abstract
    argumentation framework has recently drawn growing interest. Specifically, an
    inconsistent database, involving certain types of integrity constraints such as
    functional and inclusion dependencies, can be viewed as an argumentation framework
    in Dung’s setting. Nevertheless, no prior work has explored the exact expressive
    power of Dung’s theory of argumentation when compared to inconsistent databases
    and integrity constraints. In this paper, we close this gap by arguing that an
    argumentation framework can also be viewed as an inconsistent database. We first
    establish a connection between subset-repairs for databases and extensions for
    AFs considering conflict-free, naive, admissible, and preferred semantics. Further,
    we define a new family of attribute-based repairs based on the principle of maximal
    content preservation. The effectiveness of these repairs is then highlighted by
    connecting them to stable, semi-stable, and stage semantics. Our main contributions
    include translating an argumentation framework into a database together with integrity
    constraints. Moreover, this translation can be achieved in polynomial time, which
    is essential in transferring complexity results between the two formalisms.</jats:p>
author:
- first_name: Yasir
  full_name: Mahmood, Yasir
  id: '99353'
  last_name: Mahmood
- first_name: Markus
  full_name: Hecher, Markus
  last_name: Hecher
- first_name: Axel-Cyrille
  full_name: Ngonga Ngomo, Axel-Cyrille
  id: '65716'
  last_name: Ngonga Ngomo
citation:
  ama: 'Mahmood Y, Hecher M, Ngonga Ngomo A-C. Dung’s Argumentation Framework: Unveiling
    the Expressive Power with Inconsistent Databases. In: <i>Proceedings of the AAAI
    Conference on Artificial Intelligence</i>. Vol 39. Association for the Advancement
    of Artificial Intelligence (AAAI); 2025:15058-15066. doi:<a href="https://doi.org/10.1609/aaai.v39i14.33651">10.1609/aaai.v39i14.33651</a>'
  apa: 'Mahmood, Y., Hecher, M., &#38; Ngonga Ngomo, A.-C. (2025). Dung’s Argumentation
    Framework: Unveiling the Expressive Power with Inconsistent Databases. <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>, <i>39</i>(14), 15058–15066.
    <a href="https://doi.org/10.1609/aaai.v39i14.33651">https://doi.org/10.1609/aaai.v39i14.33651</a>'
  bibtex: '@inproceedings{Mahmood_Hecher_Ngonga Ngomo_2025, title={Dung’s Argumentation
    Framework: Unveiling the Expressive Power with Inconsistent Databases}, volume={39},
    DOI={<a href="https://doi.org/10.1609/aaai.v39i14.33651">10.1609/aaai.v39i14.33651</a>},
    number={14}, booktitle={Proceedings of the AAAI Conference on Artificial Intelligence},
    publisher={Association for the Advancement of Artificial Intelligence (AAAI)},
    author={Mahmood, Yasir and Hecher, Markus and Ngonga Ngomo, Axel-Cyrille}, year={2025},
    pages={15058–15066} }'
  chicago: 'Mahmood, Yasir, Markus Hecher, and Axel-Cyrille Ngonga Ngomo. “Dung’s
    Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases.”
    In <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>, 39:15058–66.
    Association for the Advancement of Artificial Intelligence (AAAI), 2025. <a href="https://doi.org/10.1609/aaai.v39i14.33651">https://doi.org/10.1609/aaai.v39i14.33651</a>.'
  ieee: 'Y. Mahmood, M. Hecher, and A.-C. Ngonga Ngomo, “Dung’s Argumentation Framework:
    Unveiling the Expressive Power with Inconsistent Databases,” in <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>, 2025, vol. 39, no. 14,
    pp. 15058–15066, doi: <a href="https://doi.org/10.1609/aaai.v39i14.33651">10.1609/aaai.v39i14.33651</a>.'
  mla: 'Mahmood, Yasir, et al. “Dung’s Argumentation Framework: Unveiling the Expressive
    Power with Inconsistent Databases.” <i>Proceedings of the AAAI Conference on Artificial
    Intelligence</i>, vol. 39, no. 14, Association for the Advancement of Artificial
    Intelligence (AAAI), 2025, pp. 15058–66, doi:<a href="https://doi.org/10.1609/aaai.v39i14.33651">10.1609/aaai.v39i14.33651</a>.'
  short: 'Y. Mahmood, M. Hecher, A.-C. Ngonga Ngomo, in: Proceedings of the AAAI Conference
    on Artificial Intelligence, Association for the Advancement of Artificial Intelligence
    (AAAI), 2025, pp. 15058–15066.'
date_created: 2025-05-15T11:05:36Z
date_updated: 2026-02-20T10:07:00Z
department:
- _id: '574'
doi: 10.1609/aaai.v39i14.33651
intvolume: '        39'
issue: '14'
language:
- iso: eng
page: 15058-15066
project:
- _id: '121'
  name: 'TRR 318; TP B01: Ein dialogbasierter Ansatz zur Erklärung von Modellen des
    maschinellen Lernens'
publication: Proceedings of the AAAI Conference on Artificial Intelligence
publication_identifier:
  issn:
  - 2374-3468
  - 2159-5399
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence (AAAI)
status: public
title: 'Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent
  Databases'
type: conference
user_id: '99353'
volume: 39
year: '2025'
...
---
_id: '63181'
abstract:
- lang: eng
  text: "<jats:sec>\r\n                    <jats:title>Purpose</jats:title>\r\n                    <jats:p>This
    study aims to explore the current state of generative artificial intelligence
    (genAI) in the workplace and discuss a potential digital divide in relation to
    genAI.</jats:p>\r\n                  </jats:sec>\r\n                  <jats:sec>\r\n
    \                   <jats:title>Design/methodology/approach</jats:title>\r\n                    <jats:p>Using
    a quantitative approach, we study career-relevant predictors – family socio-economic
    status, education and work characteristics – and their relationship with different
    indicators of digital divide – access, genAI use, attitude toward AI and perceived
    AI literacy. To test our hypothesis, we used logistic and linear regression analyses.
    Additionally, latent profile analysis was conducted to identify patterns regarding
    work characteristics within the sample.</jats:p>\r\n                  </jats:sec>\r\n
    \                 <jats:sec>\r\n                    <jats:title>Findings</jats:title>\r\n
    \                   <jats:p>Among the 1,341 participants, 326 individuals were
    genAI users. Our results show that higher family socio-economic status, education
    and enriched and demanding work can be linked to a more positive attitude toward
    AI and higher perceived AI literacy. In the case of access and frequency of use,
    the results were mixed.</jats:p>\r\n                  </jats:sec>\r\n                  <jats:sec>\r\n
    \                   <jats:title>Originality/value</jats:title>\r\n                    <jats:p>Our
    findings offer a novel contribution by examining a potentially upcoming digital
    divide in the case of genAI. We focus on how the career adaptation of the workforce
    might develop in the age of genAI. Importantly, we highlight that not all individuals
    may have an equal opportunity to adapt to genAI, which could hinder their future
    career development and reinforce patterns of inequality. Future research should
    address how to promote inclusivity and consider individual differences in adapting
    to genAI.</jats:p>\r\n                  </jats:sec>"
author:
- first_name: Katharina
  full_name: Neufeld, Katharina
  last_name: Neufeld
- first_name: Sandra
  full_name: Ohly, Sandra
  last_name: Ohly
- first_name: Didem
  full_name: Sedefoglu-Ulucak, Didem
  last_name: Sedefoglu-Ulucak
- first_name: Isabel
  full_name: Steinhardt, Isabel
  id: '90339'
  last_name: Steinhardt
  orcid: https://orcid.org/0000-0002-2590-6189
- first_name: Sylvi
  full_name: Mauermeister, Sylvi
  id: '98032'
  last_name: Mauermeister
citation:
  ama: Neufeld K, Ohly S, Sedefoglu-Ulucak D, Steinhardt I, Mauermeister S. Analyzing
    the role of family socio-economic status, education and work characteristics in
    times of generative artificial intelligence and digital divide. <i>Career Development
    International</i>. Published online 2025:1-19. doi:<a href="https://doi.org/10.1108/cdi-10-2024-0442">10.1108/cdi-10-2024-0442</a>
  apa: Neufeld, K., Ohly, S., Sedefoglu-Ulucak, D., Steinhardt, I., &#38; Mauermeister,
    S. (2025). Analyzing the role of family socio-economic status, education and work
    characteristics in times of generative artificial intelligence and digital divide.
    <i>Career Development International</i>, 1–19. <a href="https://doi.org/10.1108/cdi-10-2024-0442">https://doi.org/10.1108/cdi-10-2024-0442</a>
  bibtex: '@article{Neufeld_Ohly_Sedefoglu-Ulucak_Steinhardt_Mauermeister_2025, title={Analyzing
    the role of family socio-economic status, education and work characteristics in
    times of generative artificial intelligence and digital divide}, DOI={<a href="https://doi.org/10.1108/cdi-10-2024-0442">10.1108/cdi-10-2024-0442</a>},
    journal={Career Development International}, publisher={Emerald}, author={Neufeld,
    Katharina and Ohly, Sandra and Sedefoglu-Ulucak, Didem and Steinhardt, Isabel
    and Mauermeister, Sylvi}, year={2025}, pages={1–19} }'
  chicago: Neufeld, Katharina, Sandra Ohly, Didem Sedefoglu-Ulucak, Isabel Steinhardt,
    and Sylvi Mauermeister. “Analyzing the Role of Family Socio-Economic Status, Education
    and Work Characteristics in Times of Generative Artificial Intelligence and Digital
    Divide.” <i>Career Development International</i>, 2025, 1–19. <a href="https://doi.org/10.1108/cdi-10-2024-0442">https://doi.org/10.1108/cdi-10-2024-0442</a>.
  ieee: 'K. Neufeld, S. Ohly, D. Sedefoglu-Ulucak, I. Steinhardt, and S. Mauermeister,
    “Analyzing the role of family socio-economic status, education and work characteristics
    in times of generative artificial intelligence and digital divide,” <i>Career
    Development International</i>, pp. 1–19, 2025, doi: <a href="https://doi.org/10.1108/cdi-10-2024-0442">10.1108/cdi-10-2024-0442</a>.'
  mla: Neufeld, Katharina, et al. “Analyzing the Role of Family Socio-Economic Status,
    Education and Work Characteristics in Times of Generative Artificial Intelligence
    and Digital Divide.” <i>Career Development International</i>, Emerald, 2025, pp.
    1–19, doi:<a href="https://doi.org/10.1108/cdi-10-2024-0442">10.1108/cdi-10-2024-0442</a>.
  short: K. Neufeld, S. Ohly, D. Sedefoglu-Ulucak, I. Steinhardt, S. Mauermeister,
    Career Development International (2025) 1–19.
date_created: 2025-12-17T09:07:27Z
date_updated: 2026-02-20T11:21:28Z
ddc:
- '300'
department:
- _id: '121'
doi: 10.1108/cdi-10-2024-0442
file:
- access_level: closed
  content_type: application/pdf
  creator: isste
  date_created: 2025-12-17T09:10:18Z
  date_updated: 2025-12-17T09:10:18Z
  file_id: '63182'
  file_name: 2025 Neufeld et al. DD Family Career.pdf
  file_size: 718834
  relation: main_file
  success: 1
file_date_updated: 2025-12-17T09:10:18Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.emerald.com/cdi/article/doi/10.1108/CDI-10-2024-0442/1310335
oa: '1'
page: 1-19
publication: Career Development International
publication_identifier:
  issn:
  - 1362-0436
  - 1758-6003
publication_status: published
publisher: Emerald
quality_controlled: '1'
status: public
title: Analyzing the role of family socio-economic status, education and work characteristics
  in times of generative artificial intelligence and digital divide
type: journal_article
user_id: '90339'
year: '2025'
...