---
_id: '64062'
abstract:
- lang: eng
text: Abstract Novel SBA-15-supported heterogeneous catalysts are synthesized and
applied in the Mizoroki?Heck and the Suzuki?Miyaura cross-coupling reactions in
green solvents like PEG or water. The structural properties of the products after
each synthesis step are monitored by different analytics. The amount of amine/carboxyl
groups and vanillin/histidine methyl ester and thermal stability are determined
by TGA and elemental analysis, while ICP-OES delivered the amount of palladium
of the catalysts. The morphology is investigated by SEM and XPS and confirms the
presence of coordinated palladium in the zero-oxidation state. Gas adsorption
analysis is conducted, which indicates the presence of palladium clusters in one
of the two catalysts, which is underlined by BSE images combined with EDX. A detailed
13C ssNMR and DNP-enhanced 15N ssNMR spectral analysis is presented, which provides
ultimate proof of the successful syntheses of the catalysts. The coordination
of the palladium onto the carrier material is shown by combining the NMR spectral
results with the results of the other analytics. First catalytic tests show for
the Mizoroki?Heck reaction yields up to nearly 100% and for the Suzuki-Miyaura
up to 88% in the presence of PEG and water, respectively.
author:
- first_name: Till
full_name: Wissel, Till
last_name: Wissel
- first_name: Lorenz
full_name: Rösler, Lorenz
last_name: Rösler
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Mark V.
full_name: Höfler, Mark V.
last_name: Höfler
- first_name: Kevin
full_name: Herr, Kevin
last_name: Herr
- first_name: Marcos
full_name: Oliveira Jr., Marcos
last_name: Oliveira Jr.
- first_name: Vytautas
full_name: Klimavicius, Vytautas
last_name: Klimavicius
- first_name: Martin
full_name: Ebert, Martin
last_name: Ebert
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Markus
full_name: Hoffmann, Markus
last_name: Hoffmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
citation:
ama: 'Wissel T, Rösler L, Brodrecht M, et al. Novel Heterogeneous Pd Catalysts for
Cross-Coupling Reactions in Biocompatible Media: Structural Insights from Solid-State
NMR Techniques. ChemCatChem. 2024;17:e202401511. doi:10.1002/cctc.202401511'
apa: 'Wissel, T., Rösler, L., Brodrecht, M., Höfler, M. V., Herr, K., Oliveira Jr.,
M., Klimavicius, V., Ebert, M., Breitzke, H., Hoffmann, M., Buntkowsky, G., &
Gutmann, T. (2024). Novel Heterogeneous Pd Catalysts for Cross-Coupling Reactions
in Biocompatible Media: Structural Insights from Solid-State NMR Techniques. ChemCatChem,
17, e202401511. https://doi.org/10.1002/cctc.202401511'
bibtex: '@article{Wissel_Rösler_Brodrecht_Höfler_Herr_Oliveira Jr._Klimavicius_Ebert_Breitzke_Hoffmann_et
al._2024, title={Novel Heterogeneous Pd Catalysts for Cross-Coupling Reactions
in Biocompatible Media: Structural Insights from Solid-State NMR Techniques},
volume={17}, DOI={10.1002/cctc.202401511},
journal={ChemCatChem}, publisher={John Wiley & Sons, Ltd}, author={Wissel,
Till and Rösler, Lorenz and Brodrecht, Martin and Höfler, Mark V. and Herr, Kevin
and Oliveira Jr., Marcos and Klimavicius, Vytautas and Ebert, Martin and Breitzke,
Hergen and Hoffmann, Markus and et al.}, year={2024}, pages={e202401511} }'
chicago: 'Wissel, Till, Lorenz Rösler, Martin Brodrecht, Mark V. Höfler, Kevin Herr,
Marcos Oliveira Jr., Vytautas Klimavicius, et al. “Novel Heterogeneous Pd Catalysts
for Cross-Coupling Reactions in Biocompatible Media: Structural Insights from
Solid-State NMR Techniques.” ChemCatChem 17 (2024): e202401511. https://doi.org/10.1002/cctc.202401511.'
ieee: 'T. Wissel et al., “Novel Heterogeneous Pd Catalysts for Cross-Coupling
Reactions in Biocompatible Media: Structural Insights from Solid-State NMR Techniques,”
ChemCatChem, vol. 17, p. e202401511, 2024, doi: 10.1002/cctc.202401511.'
mla: 'Wissel, Till, et al. “Novel Heterogeneous Pd Catalysts for Cross-Coupling
Reactions in Biocompatible Media: Structural Insights from Solid-State NMR Techniques.”
ChemCatChem, vol. 17, John Wiley & Sons, Ltd, 2024, p. e202401511,
doi:10.1002/cctc.202401511.'
short: T. Wissel, L. Rösler, M. Brodrecht, M.V. Höfler, K. Herr, M. Oliveira Jr.,
V. Klimavicius, M. Ebert, H. Breitzke, M. Hoffmann, G. Buntkowsky, T. Gutmann,
ChemCatChem 17 (2024) e202401511.
date_created: 2026-02-07T16:18:53Z
date_updated: 2026-02-17T16:12:41Z
doi: 10.1002/cctc.202401511
extern: '1'
intvolume: ' 17'
keyword:
- SBA-15
- Heterogeneous catalyst
- Pd cross-coupling
- Polyethylene glycol
- Solid-state DNP NMR
language:
- iso: eng
page: e202401511
publication: ChemCatChem
publication_identifier:
issn:
- 1867-3880
publisher: John Wiley & Sons, Ltd
status: public
title: 'Novel Heterogeneous Pd Catalysts for Cross-Coupling Reactions in Biocompatible
Media: Structural Insights from Solid-State NMR Techniques'
type: journal_article
user_id: '100715'
volume: 17
year: '2024'
...
---
_id: '30291'
abstract:
- lang: eng
text: "The volume comprises a variety of research approaches that seek to explore
and understand employees’ learning and development through and for work. Working
life reveals challenges through technological, economic and societal development
that can only rudimentarily be addressed by formal education and training. Workplace
learning becomes more and more important for employees and enterprises to successfully
cope with these challenges.\r\nWorkplace learning is a steadily growing field
of educational research but it lacks so far a scholastic canon – there is rather
a diversity of research approaches. This volume reflects this diversity by bringing
together researchers from different countries and different theoretical backgrounds,
presenting their current research on topics that all are relevant for understanding
presages, processes and outcomes of workplace learning. Hence, this volume is
of relevance for researchers as well as practitioners in the field and policy
makers."
alternative_title:
- Insights from a Growing Field
citation:
ama: Harteis C, Gijbels D, Kyndt E, eds. Research Approaches on Workplace Learning.
Springer International Publishing; 2022. doi:10.1007/978-3-030-89582-2
apa: Harteis, C., Gijbels, D., & Kyndt, E. (Eds.). (2022). Research Approaches
on Workplace Learning. Springer International Publishing. https://doi.org/10.1007/978-3-030-89582-2
bibtex: '@book{Harteis_Gijbels_Kyndt_2022, place={Cham}, title={Research Approaches
on Workplace Learning}, DOI={10.1007/978-3-030-89582-2},
publisher={Springer International Publishing}, year={2022} }'
chicago: 'Harteis, Christian, David Gijbels, and Eva Kyndt, eds. Research Approaches
on Workplace Learning. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-030-89582-2.'
ieee: 'C. Harteis, D. Gijbels, and E. Kyndt, Eds., Research Approaches on Workplace
Learning. Cham: Springer International Publishing, 2022.'
mla: Harteis, Christian, et al., editors. Research Approaches on Workplace Learning.
Springer International Publishing, 2022, doi:10.1007/978-3-030-89582-2.
short: C. Harteis, D. Gijbels, E. Kyndt, eds., Research Approaches on Workplace
Learning, Springer International Publishing, Cham, 2022.
date_created: 2022-03-13T19:13:27Z
date_updated: 2022-03-13T19:14:34Z
department:
- _id: '452'
doi: 10.1007/978-3-030-89582-2
editor:
- first_name: Christian
full_name: Harteis, Christian
id: '27503'
last_name: Harteis
orcid: https://orcid.org/0000-0002-3570-7626
- first_name: David
full_name: Gijbels, David
last_name: Gijbels
- first_name: Eva
full_name: Kyndt, Eva
last_name: Kyndt
keyword:
- new generation of researchersthe team level of workplace learningindividual level
of workplace learningorganizational level of workplace learningsocietal level of
workplace learninginterdependent cross-level research approachesWork AgencyWork-life
perspectivesTeam learningTeam climateSocial influences on team learningKnowledge
construction in teamsLearning cultureAcknowledgement of competencesTechnology and
professional learningCreation of a learning eco-systemDiversity as a challenge for
organisationsHigher education as preparation for WPLSocial support in networks and
professional learningvocational and professional education
language:
- iso: eng
place: Cham
publication_identifier:
isbn:
- '9783030895815'
- '9783030895822'
issn:
- 2210-5549
- 2210-5557
publication_status: published
publisher: Springer International Publishing
related_material:
link:
- relation: other
url: https://link.springer.com/book/10.1007/978-3-030-89582-2#about
status: public
title: Research Approaches on Workplace Learning
type: book_editor
user_id: '50788'
year: '2022'
...
---
_id: '32309'
abstract:
- lang: eng
text: "Due to the increasing influences of a VUCA world, design thinking workshops
have been established as a standard technique to build solutions according to
uncertain customer needs. Concerning the ongoing pandemic and rising development
of solutions across organizations, more and more workshops were conducted online
with software support. However, existing software tools insufficiently address
the different workshop situations in terms of the process (i.e., fixed tasks to
conduct), the place (e.g., static online whiteboards), and people (i.e., synchronous
working of all stakeholders).\r\nTherefore, we propose a design science study
to develop a situation-specific software support that can be configured with flexible
development processes, different places, and task-related people. Based on practical
experience in existing research projects, we derive the initial design requirements
and map them to a set of design principles. Out of that, we design a concept with
its implementation as a software tool and point out open challenges. "
author:
- first_name: Sebastian
full_name: Gottschalk, Sebastian
id: '47208'
last_name: Gottschalk
- first_name: Enes
full_name: Yigitbas, Enes
id: '8447'
last_name: Yigitbas
orcid: 0000-0002-5967-833X
- first_name: Alexander
full_name: Nowosad, Alexander
last_name: Nowosad
- first_name: Gregor
full_name: Engels, Gregor
id: '107'
last_name: Engels
citation:
ama: 'Gottschalk S, Yigitbas E, Nowosad A, Engels G. Towards Situation-specific
Software Support for Cross-organizational Design Thinking Processes. In: Proceedings
of the 5th International Workshop on Software-Intensive Business (IWSiB’22) .
ACM; 2022.'
apa: Gottschalk, S., Yigitbas, E., Nowosad, A., & Engels, G. (2022). Towards
Situation-specific Software Support for Cross-organizational Design Thinking Processes.
Proceedings of the 5th International Workshop on Software-Intensive Business
(IWSiB’22) .
bibtex: '@inproceedings{Gottschalk_Yigitbas_Nowosad_Engels_2022, title={Towards
Situation-specific Software Support for Cross-organizational Design Thinking Processes},
booktitle={Proceedings of the 5th International Workshop on Software-intensive
Business (IWSiB’22) }, publisher={ACM}, author={Gottschalk, Sebastian and Yigitbas,
Enes and Nowosad, Alexander and Engels, Gregor}, year={2022} }'
chicago: Gottschalk, Sebastian, Enes Yigitbas, Alexander Nowosad, and Gregor Engels.
“Towards Situation-Specific Software Support for Cross-Organizational Design Thinking
Processes.” In Proceedings of the 5th International Workshop on Software-Intensive
Business (IWSiB’22) . ACM, 2022.
ieee: S. Gottschalk, E. Yigitbas, A. Nowosad, and G. Engels, “Towards Situation-specific
Software Support for Cross-organizational Design Thinking Processes,” 2022.
mla: Gottschalk, Sebastian, et al. “Towards Situation-Specific Software Support
for Cross-Organizational Design Thinking Processes.” Proceedings of the 5th
International Workshop on Software-Intensive Business (IWSiB’22) , ACM, 2022.
short: 'S. Gottschalk, E. Yigitbas, A. Nowosad, G. Engels, in: Proceedings of the
5th International Workshop on Software-Intensive Business (IWSiB’22) , ACM, 2022.'
date_created: 2022-07-01T08:14:16Z
date_updated: 2023-03-14T09:59:05Z
department:
- _id: '66'
- _id: '534'
keyword:
- design thinking
- situation-specific
- cross-organizational
- software support
language:
- iso: eng
project:
- _id: '1'
name: 'SFB 901: SFB 901'
- _id: '4'
name: 'SFB 901 - C: SFB 901 - Project Area C'
- _id: '17'
name: 'SFB 901 - C5: SFB 901 - Subproject C5'
publication: 'Proceedings of the 5th International Workshop on Software-intensive
Business (IWSiB''22) '
publisher: ACM
status: public
title: Towards Situation-specific Software Support for Cross-organizational Design
Thinking Processes
type: conference
user_id: '8447'
year: '2022'
...
---
_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. Frontiers in Psychology.
2021;12. doi:10.3389/fpsyg.2021.672383'
apa: 'Tagliabue, S., Zambelli, M., Sorgente, A., Sommer, S., Hoellger, C., Buhl,
H. M., & 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. Frontiers in Psychology, 12,
Article 672383. https://doi.org/10.3389/fpsyg.2021.672383'
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={10.3389/fpsyg.2021.672383},
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.” Frontiers
in Psychology 12 (2021). https://doi.org/10.3389/fpsyg.2021.672383.'
ieee: 'S. Tagliabue 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,” Frontiers in Psychology,
vol. 12, Art. no. 672383, 2021, doi: 10.3389/fpsyg.2021.672383.'
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.” Frontiers in Psychology,
vol. 12, 672383, Frontiers Media SA, 2021, doi:10.3389/fpsyg.2021.672383.'
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: '4561'
abstract:
- lang: eng
text: We exploit a unique sample of structured financial products (SFPs) to analyze
pricing and issuance dependencies among different types of such market‐linked
investment vehicles. Our study provides evidence of cross‐pricing between products
with complementary payoff profiles. Such dependencies may be explained by issuers’
efforts to generate order flow for products that supplement their current SFP
risk exposure. Additionally, we observe issuance patterns in line with the argument
that issuers exploit the complementarity payout profiles when bringing SFPs to
market. Our study emphasizes cross‐pricing from a perspective not previously considered
in the literature.
article_type: original
author:
- first_name: Matthias
full_name: Pelster, Matthias
id: '67265'
last_name: Pelster
orcid: ' https://orcid.org/0000-0001-5740-2420'
- first_name: Andrea
full_name: Schertler, Andrea
last_name: Schertler
citation:
ama: Pelster M, Schertler A. Pricing and issuance dependencies in SFP portfolios.
Journal of Futures Markets. 2019;39(3):342-365. doi:10.1002/fut.21978
apa: Pelster, M., & Schertler, A. (2019). Pricing and issuance dependencies
in SFP portfolios. Journal of Futures Markets, 39(3), 342–365. https://doi.org/10.1002/fut.21978
bibtex: '@article{Pelster_Schertler_2019, title={Pricing and issuance dependencies
in SFP portfolios}, volume={39}, DOI={10.1002/fut.21978},
number={3}, journal={Journal of Futures Markets}, author={Pelster, Matthias and
Schertler, Andrea}, year={2019}, pages={342–365} }'
chicago: 'Pelster, Matthias, and Andrea Schertler. “Pricing and Issuance Dependencies
in SFP Portfolios.” Journal of Futures Markets 39, no. 3 (2019): 342–65.
https://doi.org/10.1002/fut.21978.'
ieee: M. Pelster and A. Schertler, “Pricing and issuance dependencies in SFP portfolios,”
Journal of Futures Markets, vol. 39, no. 3, pp. 342–365, 2019.
mla: Pelster, Matthias, and Andrea Schertler. “Pricing and Issuance Dependencies
in SFP Portfolios.” Journal of Futures Markets, vol. 39, no. 3, 2019, pp.
342–65, doi:10.1002/fut.21978.
short: M. Pelster, A. Schertler, Journal of Futures Markets 39 (2019) 342–365.
date_created: 2018-10-01T11:45:28Z
date_updated: 2022-01-06T07:01:10Z
ddc:
- '330'
department:
- _id: '186'
- _id: '578'
doi: 10.1002/fut.21978
file:
- access_level: closed
content_type: application/pdf
creator: bange
date_created: 2019-02-06T13:06:50Z
date_updated: 2019-02-06T13:06:50Z
file_id: '7566'
file_name: Pelster 2019 SFP.pdf
file_size: 1658836
relation: main_file
success: 1
file_date_updated: 2019-02-06T13:06:50Z
has_accepted_license: '1'
intvolume: ' 39'
issue: '3'
jel:
- G12
- G13
- G14
- G24
keyword:
- cross‐pricing
- discount certificate
- hedging
- issuance decisions
- put warrants
- structured financial products
language:
- iso: eng
page: 342-365
publication: Journal of Futures Markets
publication_status: published
status: public
title: Pricing and issuance dependencies in SFP portfolios
type: journal_article
user_id: '21810'
volume: 39
year: '2019'
...
---
_id: '64053'
abstract:
- lang: eng
text: The utilization and preparation of functional hybrid films for optical sensing
applications and membranes is of utmost importance. In this work, we report the
convenient and scalable preparation of self-crosslinking particle-based films
derived by directed self-assembly of alkoxysilane-based cross-linkers as part
of a core-shell particle architecture. The synthesis of well-designed monodisperse
core-shell particles by emulsion polymerization is the basic prerequisite for
subsequent particle processing via the melt-shear organization technique. In more
detail, the core particles consist of polystyrene (PS) or poly(methyl methacrylate)
(PMMA), while the comparably soft particle shell consists of poly(ethyl acrylate)
(PEA) and different alkoxysilane-based poly(methacrylate)s. For hybrid film formation
and convenient self-cross-linking, different alkyl groups at the siloxane moieties
were investigated in detail by solid-state Magic-Angle Spinning Nuclear Magnetic
Resonance (MAS, NMR) spectroscopy revealing different crosslinking capabilities,
which strongly influence the properties of the core or shell particle films with
respect to transparency and iridescent reflection colors. Furthermore, solid-state
NMR spectroscopy and investigation of the thermal properties by differential scanning
calorimetry (DSC) measurements allow for insights into the cross-linking capabilities
prior to and after synthesis, as well as after the thermally and pressure-induced
processing steps. Subsequently, free-standing and self-crosslinked particle-based
films featuring excellent particle order are obtained by application of the melt-shear
organization technique, as shown by microscopy (TEM, SEM).
author:
- first_name: S.
full_name: Vowinkel, S.
last_name: Vowinkel
- first_name: S.
full_name: Paul, S.
last_name: Paul
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: M.
full_name: Gallei, M.
last_name: Gallei
citation:
ama: Vowinkel S, Paul S, Gutmann T, Gallei M. Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing. Nanomaterials.
2017;7(11):390. doi:10.3390/nano7110390
apa: Vowinkel, S., Paul, S., Gutmann, T., & Gallei, M. (2017). Free-Standing
and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.
Nanomaterials, 7(11), 390. https://doi.org/10.3390/nano7110390
bibtex: '@article{Vowinkel_Paul_Gutmann_Gallei_2017, title={Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing}, volume={7}, DOI={10.3390/nano7110390}, number={11},
journal={Nanomaterials}, author={Vowinkel, S. and Paul, S. and Gutmann, Torsten
and Gallei, M.}, year={2017}, pages={390} }'
chicago: 'Vowinkel, S., S. Paul, Torsten Gutmann, and M. Gallei. “Free-Standing
and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.”
Nanomaterials 7, no. 11 (2017): 390. https://doi.org/10.3390/nano7110390.'
ieee: 'S. Vowinkel, S. Paul, T. Gutmann, and M. Gallei, “Free-Standing and Self-Crosslinkable
Hybrid Films by Core-Shell Particle Design and Processing,” Nanomaterials,
vol. 7, no. 11, p. 390, 2017, doi: 10.3390/nano7110390.'
mla: Vowinkel, S., et al. “Free-Standing and Self-Crosslinkable Hybrid Films by
Core-Shell Particle Design and Processing.” Nanomaterials, vol. 7, no.
11, 2017, p. 390, doi:10.3390/nano7110390.
short: S. Vowinkel, S. Paul, T. Gutmann, M. Gallei, Nanomaterials 7 (2017) 390.
date_created: 2026-02-07T16:15:23Z
date_updated: 2026-02-17T16:12:54Z
doi: 10.3390/nano7110390
extern: '1'
intvolume: ' 7'
issue: '11'
keyword:
- Materials Science
- Science & Technology - Other Topics
- solid-state nmr
- spectroscopy
- catalysts
- colloidal crystals
- colloids
- cross-linking
- elastomeric opal films
- emulsion polymerization
- gamma-methacryloxypropyltrimethoxysilane
- hybrid films
- melt-shear organization
- nanoparticles
- particle
- photons
- polymers
- processing
- self-assembly
- transition
language:
- iso: eng
page: '390'
publication: Nanomaterials
publication_identifier:
issn:
- 2079-4991
status: public
title: Free-Standing and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design
and Processing
type: journal_article
user_id: '100715'
volume: 7
year: '2017'
...
---
_id: '63920'
abstract:
- lang: eng
text: Coordinatively unsaturated sites (CUS) present a key feature of alumina based
catalysts as they are believed to act as Lewis-acid sites in heterogeneously catalyzed
reactions. In the present study, the direct observation of active species on a
fluoride-doped aluminum oxide catalyst is demonstrated. This new fluoride-doped
aluminum oxide exhibits strong Lewis-acid sites and superior catalytic activity
as compared to gamma-Al2O3. To emphasize the labile state of Lewis-acid sites,
two distinctive states of the catalysts surface are addressed using H-1-Al-27
cross polarization (CP) MAS NMR. On the one hand, the highly dehydrated and active
state after calcination at 700 degrees C and on the other hand the rehydrated
and catalytically inactive surface (produced by contact to air) are probed. These
experiments revealed the presence of significant amounts of coordinatively unsaturated
sites in the form of 4-and 5-fold coordinated Al-sites on the highly dehydrated
surface. In contrast to this, the rehydrated sample exhibited a severely restructured
surface caused by the chemisorption of H2O which is ’constituted in a manner that
was proposed in earlier models for gamma-Al2O3 surfaces.
author:
- first_name: L.
full_name: Ahrem, L.
last_name: Ahrem
- first_name: G.
full_name: Scholz, G.
last_name: Scholz
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: B.
full_name: Calvo, B.
last_name: Calvo
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
- first_name: E.
full_name: Kemnitz, E.
last_name: Kemnitz
citation:
ama: Ahrem L, Scholz G, Gutmann T, Calvo B, Buntkowsky G, Kemnitz E. Direct Observation
of Coordinatively Unsaturated Sites on the Surface of a Fluoride-Doped Alumina
Catalyst. Journal of Physical Chemistry C. 2017;121(22):12206–12213. doi:10.1021/acs.jpcc.7b02535
apa: Ahrem, L., Scholz, G., Gutmann, T., Calvo, B., Buntkowsky, G., & Kemnitz,
E. (2017). Direct Observation of Coordinatively Unsaturated Sites on the Surface
of a Fluoride-Doped Alumina Catalyst. Journal of Physical Chemistry C,
121(22), 12206–12213. https://doi.org/10.1021/acs.jpcc.7b02535
bibtex: '@article{Ahrem_Scholz_Gutmann_Calvo_Buntkowsky_Kemnitz_2017, title={Direct
Observation of Coordinatively Unsaturated Sites on the Surface of a Fluoride-Doped
Alumina Catalyst}, volume={121}, DOI={10.1021/acs.jpcc.7b02535},
number={22}, journal={Journal of Physical Chemistry C}, author={Ahrem, L. and
Scholz, G. and Gutmann, Torsten and Calvo, B. and Buntkowsky, G. and Kemnitz,
E.}, year={2017}, pages={12206–12213} }'
chicago: 'Ahrem, L., G. Scholz, Torsten Gutmann, B. Calvo, G. Buntkowsky, and E.
Kemnitz. “Direct Observation of Coordinatively Unsaturated Sites on the Surface
of a Fluoride-Doped Alumina Catalyst.” Journal of Physical Chemistry C
121, no. 22 (2017): 12206–12213. https://doi.org/10.1021/acs.jpcc.7b02535.'
ieee: 'L. Ahrem, G. Scholz, T. Gutmann, B. Calvo, G. Buntkowsky, and E. Kemnitz,
“Direct Observation of Coordinatively Unsaturated Sites on the Surface of a Fluoride-Doped
Alumina Catalyst,” Journal of Physical Chemistry C, vol. 121, no. 22, pp.
12206–12213, 2017, doi: 10.1021/acs.jpcc.7b02535.'
mla: Ahrem, L., et al. “Direct Observation of Coordinatively Unsaturated Sites on
the Surface of a Fluoride-Doped Alumina Catalyst.” Journal of Physical Chemistry
C, vol. 121, no. 22, 2017, pp. 12206–12213, doi:10.1021/acs.jpcc.7b02535.
short: L. Ahrem, G. Scholz, T. Gutmann, B. Calvo, G. Buntkowsky, E. Kemnitz, Journal
of Physical Chemistry C 121 (2017) 12206–12213.
date_created: 2026-02-07T08:56:18Z
date_updated: 2026-02-17T16:19:24Z
doi: 10.1021/acs.jpcc.7b02535
extern: '1'
intvolume: ' 121'
issue: '22'
keyword:
- al-27 nmr
- characterization
- Chemistry
- cross-polarization
- dynamic nuclear-polarization
- eta-alumina
- gamma-alumina
- hydroxy fluorides
- ions
- Materials Science
- pentacoordinated al3+
- Science & Technology - Other Topics
- solid-state nmr
- spectroscopic
- structural insights
language:
- iso: eng
page: 12206–12213
publication: Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
status: public
title: Direct Observation of Coordinatively Unsaturated Sites on the Surface of a
Fluoride-Doped Alumina Catalyst
type: journal_article
user_id: '100715'
volume: 121
year: '2017'
...
---
_id: '5825'
abstract:
- lang: eng
text: Integrating apps on mobile devices into applications running on other devices
is usually difficult. For instance, using a messenger on a smartphone to share
a text written on a desktop computer often ends up in a cumbersome solution to
transfer the text, because many applications are not designed for such scenarios.
In this paper, we present an approach enabling the integration of apps running
on Android devices into applications running on other devices and even other platforms.
This is achieved by specifying adapters for Android apps, which map their services
to a platform-independent service interface. For this purpose, we have developed
a domain-specific language to ease the specification of such mappings. Our approach
is applicable without the need to modify the existing Android apps providing the
service. We analyzed its feasibility by implementing our approach and by specifying
mappings for several popular Android apps, e.g., phone book, camera, and file
explorer.
author:
- first_name: Dennis
full_name: Wolters, Dennis
id: '11308'
last_name: Wolters
- first_name: Jonas
full_name: Kirchhoff, Jonas
id: '39928'
last_name: Kirchhoff
- first_name: Christian
full_name: Gerth, Christian
last_name: Gerth
- first_name: Gregor
full_name: Engels, Gregor
id: '107'
last_name: Engels
citation:
ama: 'Wolters D, Kirchhoff J, Gerth C, Engels G. Cross-Device Integration of Android
Apps. In: Sheng QZ, Stroulia E, Tata S, Bhiri S, eds. Service-Oriented Computing.
Cham: Springer International Publishing; 2016:171-185. doi:10.1007/978-3-319-46295-0_11'
apa: 'Wolters, D., Kirchhoff, J., Gerth, C., & Engels, G. (2016). Cross-Device
Integration of Android Apps. In Q. Z. Sheng, E. Stroulia, S. Tata, & S. Bhiri
(Eds.), Service-Oriented Computing (pp. 171–185). Cham: Springer International
Publishing. https://doi.org/10.1007/978-3-319-46295-0_11'
bibtex: '@inproceedings{Wolters_Kirchhoff_Gerth_Engels_2016, place={Cham}, title={Cross-Device
Integration of Android Apps}, DOI={10.1007/978-3-319-46295-0_11},
booktitle={Service-Oriented Computing}, publisher={Springer International Publishing},
author={Wolters, Dennis and Kirchhoff, Jonas and Gerth, Christian and Engels,
Gregor}, editor={Sheng, Quan Z. and Stroulia, Eleni and Tata, Samir and Bhiri,
Sami Editors}, year={2016}, pages={171–185} }'
chicago: 'Wolters, Dennis, Jonas Kirchhoff, Christian Gerth, and Gregor Engels.
“Cross-Device Integration of Android Apps.” In Service-Oriented Computing,
edited by Quan Z. Sheng, Eleni Stroulia, Samir Tata, and Sami Bhiri, 171–85.
Cham: Springer International Publishing, 2016. https://doi.org/10.1007/978-3-319-46295-0_11.'
ieee: D. Wolters, J. Kirchhoff, C. Gerth, and G. Engels, “Cross-Device Integration
of Android Apps,” in Service-Oriented Computing, 2016, pp. 171–185.
mla: Wolters, Dennis, et al. “Cross-Device Integration of Android Apps.” Service-Oriented
Computing, edited by Quan Z. Sheng et al., Springer International Publishing,
2016, pp. 171–85, doi:10.1007/978-3-319-46295-0_11.
short: 'D. Wolters, J. Kirchhoff, C. Gerth, G. Engels, in: Q.Z. Sheng, E. Stroulia,
S. Tata, S. Bhiri (Eds.), Service-Oriented Computing, Springer International Publishing,
Cham, 2016, pp. 171–185.'
date_created: 2018-11-26T10:21:38Z
date_updated: 2022-01-06T07:02:43Z
department:
- _id: '66'
doi: 10.1007/978-3-319-46295-0_11
editor:
- first_name: 'Quan Z. '
full_name: 'Sheng, Quan Z. '
last_name: Sheng
- first_name: 'Eleni '
full_name: 'Stroulia, Eleni '
last_name: Stroulia
- first_name: 'Samir '
full_name: 'Tata, Samir '
last_name: Tata
- first_name: 'Sami '
full_name: 'Bhiri, Sami '
last_name: Bhiri
keyword:
- Cross-Device
- Integration
- Android
- Adapter
- DSL
language:
- iso: eng
page: 171-185
place: Cham
publication: Service-Oriented Computing
publication_identifier:
isbn:
- '9783319462943'
- '9783319462950'
issn:
- 0302-9743
- 1611-3349
publication_status: published
publisher: Springer International Publishing
status: public
title: Cross-Device Integration of Android Apps
type: conference
user_id: '39928'
year: '2016'
...
---
_id: '13304'
abstract:
- lang: eng
text: A primary problem in multimedia content production is the plethora of formats
and the resulting multiple point-to-point transformation processes in different
content formatting specifications. However, these content transformation processes
can be conceptually broken down into a limited set of abstract principles. This
allows a unified approach that theoretically enables the transformation of any
given input channel into any desired output. Based on this principle, the present
article introduces the concept of Generic Content Transformation and the related
project MOCCA, which develops the corresponding software implementation of generic
content transformation for a variety of input and output channels. To balance
technical similarities with specific properties of different media channels, we
suggest a combination of an XML-based structure (MocML) and a high level authoring
environment. Generic Content Transformation further allows for novel means of
accessing assets via compound search algorithms. In the second part we summarize
and discuss current results and experiences in three scenarios of media production,
including mobile media.
author:
- first_name: Michael
full_name: Herzog, Michael
last_name: Herzog
- first_name: Matthias
full_name: Trier, Matthias
id: '72744'
last_name: Trier
citation:
ama: Herzog M, Trier M. MEDIA ENGINEERING WITH A CONTENT HUB SYSTEM. GENERIC CONTENT
TRANSFORMATION FOR MOBILE MEDIA. International Journal of Computing. 2014;7(2):108-115.
apa: Herzog, M., & Trier, M. (2014). MEDIA ENGINEERING WITH A CONTENT HUB SYSTEM.
GENERIC CONTENT TRANSFORMATION FOR MOBILE MEDIA. International Journal of Computing,
7(2), 108–115.
bibtex: '@article{Herzog_Trier_2014, title={MEDIA ENGINEERING WITH A CONTENT HUB
SYSTEM. GENERIC CONTENT TRANSFORMATION FOR MOBILE MEDIA}, volume={7}, number={2},
journal={International Journal of Computing}, author={Herzog, Michael and Trier,
Matthias}, year={2014}, pages={108–115} }'
chicago: 'Herzog, Michael, and Matthias Trier. “MEDIA ENGINEERING WITH A CONTENT
HUB SYSTEM. GENERIC CONTENT TRANSFORMATION FOR MOBILE MEDIA.” International
Journal of Computing 7, no. 2 (2014): 108–15.'
ieee: M. Herzog and M. Trier, “MEDIA ENGINEERING WITH A CONTENT HUB SYSTEM. GENERIC
CONTENT TRANSFORMATION FOR MOBILE MEDIA,” International Journal of Computing,
vol. 7, no. 2, pp. 108–115, 2014.
mla: Herzog, Michael, and Matthias Trier. “MEDIA ENGINEERING WITH A CONTENT HUB
SYSTEM. GENERIC CONTENT TRANSFORMATION FOR MOBILE MEDIA.” International Journal
of Computing, vol. 7, no. 2, 2014, pp. 108–15.
short: M. Herzog, M. Trier, International Journal of Computing 7 (2014) 108–115.
date_created: 2019-09-19T10:01:17Z
date_updated: 2022-01-06T06:51:32Z
department:
- _id: '198'
intvolume: ' 7'
issue: '2'
keyword:
- Multimedia Authoring
- Mobile Content
- Cross Media Production
- Content Engineering
- Media Retrieval
language:
- iso: eng
page: 108-115
publication: International Journal of Computing
publication_identifier:
issn:
- 2312-5381
status: public
title: MEDIA ENGINEERING WITH A CONTENT HUB SYSTEM. GENERIC CONTENT TRANSFORMATION
FOR MOBILE MEDIA
type: journal_article
user_id: '62809'
volume: 7
year: '2014'
...
---
_id: '20870'
abstract:
- lang: eng
text: This study shows how venture capital investors can identify potential biases
in multi-year management forecasts before an investment decision and derive significantly
more accurate failure predictions. By advancing a cross-sectional projection method
developed by prior research and using firm-specific information in financial statements
and business plans, we derive benchmarks for management revenue forecasts. With
these benchmarks, we estimate forecast errors as an a priori measure of biased
expectations. Using this measure for our proprietary dataset on venture-backed
start-ups in Germany, we find evidence of substantial upward forecast biases.
We uncover that firms with large forecast errors fail significantly more often
than do less biased entrepreneurs in years following the investment. Overall,
our results highlight the implications of excessive optimism and overconfidence
in entrepreneurial environments and emphasize the relevance of accounting information
and business plans for venture capital investment decisions.
author:
- first_name: Sönke
full_name: Sievers, Sönke
id: '46447'
last_name: Sievers
- first_name: Christopher Frederik
full_name: Mokwa, Christopher Frederik
last_name: Mokwa
citation:
ama: Sievers S, Mokwa CF. The Relevance of Biases in Management Forecasts for
Failure Prediction in Venture Capital Investments.; 2012. doi:10.2139/ssrn.2100501
apa: Sievers, S., & Mokwa, C. F. (2012). The Relevance of Biases in Management
Forecasts for Failure Prediction in Venture Capital Investments. https://doi.org/10.2139/ssrn.2100501
bibtex: '@book{Sievers_Mokwa_2012, title={The Relevance of Biases in Management
Forecasts for Failure Prediction in Venture Capital Investments}, DOI={10.2139/ssrn.2100501},
author={Sievers, Sönke and Mokwa, Christopher Frederik}, year={2012} }'
chicago: Sievers, Sönke, and Christopher Frederik Mokwa. The Relevance of Biases
in Management Forecasts for Failure Prediction in Venture Capital Investments,
2012. https://doi.org/10.2139/ssrn.2100501.
ieee: S. Sievers and C. F. Mokwa, The Relevance of Biases in Management Forecasts
for Failure Prediction in Venture Capital Investments. 2012.
mla: Sievers, Sönke, and Christopher Frederik Mokwa. The Relevance of Biases
in Management Forecasts for Failure Prediction in Venture Capital Investments.
2012, doi:10.2139/ssrn.2100501.
short: S. Sievers, C.F. Mokwa, The Relevance of Biases in Management Forecasts for
Failure Prediction in Venture Capital Investments, 2012.
date_created: 2021-01-05T11:59:50Z
date_updated: 2022-01-06T06:54:41Z
department:
- _id: '275'
doi: 10.2139/ssrn.2100501
extern: '1'
jel:
- G24
- G32
- M13
- M41
keyword:
- Management forecast biases
- cross-sectional projection models
- venture-backed start-ups
- failure prediction
- overoptimism
- overconfidence
language:
- iso: eng
main_file_link:
- url: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2100501
page: '31'
publication_status: published
status: public
title: The Relevance of Biases in Management Forecasts for Failure Prediction in Venture
Capital Investments
type: working_paper
user_id: '46447'
year: '2012'
...
---
_id: '5196'
abstract:
- lang: eng
text: 'This study shows how venture capital investors can identify potential biases
in multi-year management forecasts before an investment decision and derive significantly
more accurate failure predictions. By advancing a cross-sectional projection method
developed by prior research and using firm-specific information in financial statements
and business plans, we derive benchmarks for management revenue forecasts. With
these benchmarks, we estimate forecast errors as an a priori measure of biased
expectations. Using this measure for our proprietary dataset on venture-backed
start-ups in Germany, we find evidence of substantial upward forecast biases.
We uncover that firms with large forecast errors fail significantly more often
than do less biased entrepreneurs in years following the investment. Overall,
our results highlight the implications of excessive optimism and overconfidence
in entrepreneurial environments and emphasize the relevance of accounting information
and business plans for venture capital investment decisions. '
author:
- first_name: Christopher Frederik
full_name: Mokwa, Christopher Frederik
last_name: Mokwa
- first_name: Sönke
full_name: Sievers, Sönke
last_name: Sievers
citation:
ama: Mokwa CF, Sievers S. The Relevance of Biases in Management Forecasts for Failure
Prediction in Venture Capital Investments. SSRN Electronic Journal. 2012.
doi:10.2139/ssrn.2100501
apa: Mokwa, C. F., & Sievers, S. (2012). The Relevance of Biases in Management
Forecasts for Failure Prediction in Venture Capital Investments. SSRN Electronic
Journal. https://doi.org/10.2139/ssrn.2100501
bibtex: '@article{Mokwa_Sievers_2012, title={The Relevance of Biases in Management
Forecasts for Failure Prediction in Venture Capital Investments}, DOI={10.2139/ssrn.2100501},
journal={SSRN Electronic Journal}, author={Mokwa, Christopher Frederik and Sievers,
Sönke}, year={2012} }'
chicago: Mokwa, Christopher Frederik, and Sönke Sievers. “The Relevance of Biases
in Management Forecasts for Failure Prediction in Venture Capital Investments.”
SSRN Electronic Journal, 2012. https://doi.org/10.2139/ssrn.2100501.
ieee: C. F. Mokwa and S. Sievers, “The Relevance of Biases in Management Forecasts
for Failure Prediction in Venture Capital Investments,” SSRN Electronic Journal,
2012.
mla: Mokwa, Christopher Frederik, and Sönke Sievers. “The Relevance of Biases in
Management Forecasts for Failure Prediction in Venture Capital Investments.” SSRN
Electronic Journal, 2012, doi:10.2139/ssrn.2100501.
short: C.F. Mokwa, S. Sievers, SSRN Electronic Journal (2012).
date_created: 2018-10-31T12:12:28Z
date_updated: 2022-01-06T07:01:43Z
department:
- _id: '275'
doi: 10.2139/ssrn.2100501
jel:
- G24
- G32
- M13
- M41
keyword:
- Management forecast biases
- cross-sectional projection models
- venture-backed start-ups
- failure prediction
- overoptimism
- overconfidence
language:
- iso: eng
publication: SSRN Electronic Journal
publication_status: published
status: public
title: The Relevance of Biases in Management Forecasts for Failure Prediction in Venture
Capital Investments
type: journal_article
user_id: '64756'
year: '2012'
...
---
_id: '11930'
abstract:
- lang: eng
text: For human-machine interfaces in distant-talking environments multichannel
signal processing is often employed to obtain an enhanced signal for subsequent
processing. In this paper we propose a novel adaptation algorithm for a filter-and-sum
beamformer to adjust the coefficients of FIR filters to changing acoustic room
impulses, e.g. due to speaker movement. A deterministic and a stochastic gradient
ascent algorithm are derived from a constrained optimization problem, which iteratively
estimates the eigenvector corresponding to the largest eigenvalue of the cross
power spectral density of the microphone signals. The method does not require
an explicit estimation of the speaker location. The experimental results show
fast adaptation and excellent robustness of the proposed algorithm.
author:
- first_name: Ernst
full_name: Warsitz, Ernst
last_name: Warsitz
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Warsitz E, Haeb-Umbach R. Acoustic filter-and-sum beamforming by adaptive
principal component analysis. In: IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2005). Vol 4. ; 2005:iv/797-iv/800 Vol.
4. doi:10.1109/ICASSP.2005.1416129'
apa: Warsitz, E., & Haeb-Umbach, R. (2005). Acoustic filter-and-sum beamforming
by adaptive principal component analysis. In IEEE International Conference
on Acoustics, Speech and Signal Processing (ICASSP 2005) (Vol. 4, p. iv/797-iv/800
Vol. 4). https://doi.org/10.1109/ICASSP.2005.1416129
bibtex: '@inproceedings{Warsitz_Haeb-Umbach_2005, title={Acoustic filter-and-sum
beamforming by adaptive principal component analysis}, volume={4}, DOI={10.1109/ICASSP.2005.1416129},
booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2005)}, author={Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2005},
pages={iv/797-iv/800 Vol. 4} }'
chicago: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Acoustic Filter-and-Sum Beamforming
by Adaptive Principal Component Analysis.” In IEEE International Conference
on Acoustics, Speech and Signal Processing (ICASSP 2005), 4:iv/797-iv/800
Vol. 4, 2005. https://doi.org/10.1109/ICASSP.2005.1416129.
ieee: E. Warsitz and R. Haeb-Umbach, “Acoustic filter-and-sum beamforming by adaptive
principal component analysis,” in IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2005), 2005, vol. 4, p. iv/797-iv/800
Vol. 4.
mla: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Acoustic Filter-and-Sum Beamforming
by Adaptive Principal Component Analysis.” IEEE International Conference on
Acoustics, Speech and Signal Processing (ICASSP 2005), vol. 4, 2005, p. iv/797-iv/800
Vol. 4, doi:10.1109/ICASSP.2005.1416129.
short: 'E. Warsitz, R. Haeb-Umbach, in: IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2005), 2005, p. iv/797-iv/800 Vol. 4.'
date_created: 2019-07-12T05:31:00Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
doi: 10.1109/ICASSP.2005.1416129
intvolume: ' 4'
keyword:
- acoustic filter-and-sum beamforming
- acoustic room impulses
- acoustic signal processing
- adaptive principal component analysis
- adaptive signal processing
- architectural acoustics
- constrained optimization problem
- cross power spectral density
- deterministic algorithm
- deterministic algorithms
- distant-talking environments
- eigenvalues and eigenfunctions
- eigenvector
- enhanced signal
- filter-and-sum beamformer
- FIR filter coefficients
- FIR filter coefficients
- FIR filters
- gradient methods
- human-machine interfaces
- iterative estimation
- iterative methods
- largest eigenvalue
- microphone signals
- multichannel signal processing
- optimisation
- principal component analysis
- spectral analysis
- stochastic gradient ascent algorithm
- stochastic processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2005/WaHa05.pdf
oa: '1'
page: iv/797-iv/800 Vol. 4
publication: IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2005)
status: public
title: Acoustic filter-and-sum beamforming by adaptive principal component analysis
type: conference
user_id: '44006'
volume: 4
year: '2005'
...
---
_id: '11931'
abstract:
- lang: eng
text: The paper is concerned with binaural signal processing for a bimodal human-robot
interface with hearing and vision. The two microphone signals are processed to
obtain an enhanced single-channel input signal for the subsequent speech recognizer
and to localize the acoustic source, an important information for establishing
a natural human-robot communication. We utilize a robust adaptive algorithm for
filter-and-sum beamforming (FSB) and extract speaker direction information from
the resulting FIR filter coefficients. Further, particle filtering is applied
which conducts a nonlinear Bayesian tracking of speaker movement. Good location
accuracy can be achieved even in highly reverberant environments. The results
obtained outperform the conventional generalized cross correlation (GCC) method.
author:
- first_name: Ernst
full_name: Warsitz, Ernst
last_name: Warsitz
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Warsitz E, Haeb-Umbach R. Robust speaker direction estimation with particle
filtering. In: IEEE Workshop on Multimedia Signal Processing (MMSP 2004).
; 2004:367-370. doi:10.1109/MMSP.2004.1436569'
apa: Warsitz, E., & Haeb-Umbach, R. (2004). Robust speaker direction estimation
with particle filtering. In IEEE Workshop on Multimedia Signal Processing (MMSP
2004) (pp. 367–370). https://doi.org/10.1109/MMSP.2004.1436569
bibtex: '@inproceedings{Warsitz_Haeb-Umbach_2004, title={Robust speaker direction
estimation with particle filtering}, DOI={10.1109/MMSP.2004.1436569},
booktitle={IEEE Workshop on Multimedia Signal Processing (MMSP 2004)}, author={Warsitz,
Ernst and Haeb-Umbach, Reinhold}, year={2004}, pages={367–370} }'
chicago: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Robust Speaker Direction Estimation
with Particle Filtering.” In IEEE Workshop on Multimedia Signal Processing
(MMSP 2004), 367–70, 2004. https://doi.org/10.1109/MMSP.2004.1436569.
ieee: E. Warsitz and R. Haeb-Umbach, “Robust speaker direction estimation with particle
filtering,” in IEEE Workshop on Multimedia Signal Processing (MMSP 2004),
2004, pp. 367–370.
mla: Warsitz, Ernst, and Reinhold Haeb-Umbach. “Robust Speaker Direction Estimation
with Particle Filtering.” IEEE Workshop on Multimedia Signal Processing (MMSP
2004), 2004, pp. 367–70, doi:10.1109/MMSP.2004.1436569.
short: 'E. Warsitz, R. Haeb-Umbach, in: IEEE Workshop on Multimedia Signal Processing
(MMSP 2004), 2004, pp. 367–370.'
date_created: 2019-07-12T05:31:01Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
doi: 10.1109/MMSP.2004.1436569
keyword:
- bimodal human-robot interface
- binaural signal processing
- enhanced single-channel input signal
- filter-and-sum beamforming
- filtering theory
- FIR filter coefficient
- generalized cross correlation method
- microphones
- microphone signal
- nonlinear Bayesian tracking
- particle filtering
- robust adaptive algorithm
- robust speaker direction estimation
- signal processing
- speech enhancement
- speech recognition
- speech recognizer
- user interfaces
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2004/WaHa04.pdf
oa: '1'
page: 367-370
publication: IEEE Workshop on Multimedia Signal Processing (MMSP 2004)
status: public
title: Robust speaker direction estimation with particle filtering
type: conference
user_id: '44006'
year: '2004'
...