---
_id: '4951'
abstract:
- lang: eng
text: Despite the rapid growth and potential of technology-based services, managers'
greatest challenges are gaining customer acceptance and increasing usage of these
new innovative services. In the B2C field, studies of self-service technology
show that perceived risk is an important factor influencing the use of service
technology. Though prior research explores different risk types that emerge in
consumer settings, risk perception in the B2B setting lacks a detailed examination
of different risk types influencing technology-based service adoption. Data from
49 qualitative interviews with providers and customers in two different B2B industries
inform this study. The findings emphasize the importance of functional and financial
risks in a B2B context and show that business customers' personal and psychological
fears hinder their use of technology-based services. Results highlight differences
in risk perception and evaluation between customers and providers.
article_type: original
author:
- first_name: Stefanie
full_name: Paluch, Stefanie
last_name: Paluch
- first_name: Nancy
full_name: Wünderlich, Nancy
id: '36392'
last_name: Wünderlich
citation:
ama: Paluch S, Wünderlich N. Contrasting Risk Perceptions of Technology-Based Service
Innovations in Inter-Organizational Settings. Journal of business Research.
2016;69(7):2424--2431.
apa: Paluch, S., & Wünderlich, N. (2016). Contrasting Risk Perceptions of Technology-Based
Service Innovations in Inter-Organizational Settings. Journal of Business Research,
69(7), 2424--2431.
bibtex: '@article{Paluch_Wünderlich_2016, title={Contrasting Risk Perceptions of
Technology-Based Service Innovations in Inter-Organizational Settings.}, volume={69},
number={7}, journal={Journal of business Research}, publisher={Elsevier}, author={Paluch,
Stefanie and Wünderlich, Nancy}, year={2016}, pages={2424--2431} }'
chicago: 'Paluch, Stefanie, and Nancy Wünderlich. “Contrasting Risk Perceptions
of Technology-Based Service Innovations in Inter-Organizational Settings.” Journal
of Business Research 69, no. 7 (2016): 2424--2431.'
ieee: S. Paluch and N. Wünderlich, “Contrasting Risk Perceptions of Technology-Based
Service Innovations in Inter-Organizational Settings.,” Journal of business
Research, vol. 69, no. 7, pp. 2424--2431, 2016.
mla: Paluch, Stefanie, and Nancy Wünderlich. “Contrasting Risk Perceptions of Technology-Based
Service Innovations in Inter-Organizational Settings.” Journal of Business
Research, vol. 69, no. 7, Elsevier, 2016, pp. 2424--2431.
short: S. Paluch, N. Wünderlich, Journal of Business Research 69 (2016) 2424--2431.
date_created: 2018-10-26T10:20:07Z
date_updated: 2022-01-06T07:01:30Z
department:
- _id: '178'
- _id: '181'
intvolume: ' 69'
issue: '7'
keyword:
- Risk perception
- Technology-based service innovations
- Business-to-business context
- Interview study
- Risk categories
- Smart service
language:
- iso: eng
page: 2424--2431
publication: Journal of business Research
publication_status: published
publisher: Elsevier
status: public
title: Contrasting Risk Perceptions of Technology-Based Service Innovations in Inter-Organizational
Settings.
type: journal_article
user_id: '37741'
volume: 69
year: '2016'
...
---
_id: '5588'
abstract:
- lang: eng
text: The protection of information technology (IT) has become and is predicted
to remain a key economic challenge for organizations. While research on IT security
investment is fast growing, it lacks a theoretical basis for structuring research,
explaining economic-technological phenomena and guide future research. We address
this shortcoming by suggesting a new theoretical model emerging from a multi-theoretical
perspective adopt-ing the Resource-Based View and the Organizational Learning
Theory. The joint appli-cation of these theories allows to conceptualize in one
theoretical model the organiza-tional learning effects that occur when the protection
of organizational resources through IT security countermeasures develops over
time. We use this model of IT security invest-ments to synthesize findings of
a large body of literature and to derive research gaps. We also discuss managerial
implications of (closing) these gaps by providing practical ex-amples.
author:
- first_name: Eva
full_name: Weishäupl, Eva
last_name: Weishäupl
- first_name: Emrah
full_name: Yasasin, Emrah
last_name: Yasasin
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Weishäupl E, Yasasin E, Schryen G. A Multi-Theoretical Literature Review on
Information Security Investments using the Resource-Based View and the Organizational
Learning Theory. In: International Conference on Information Systems. ;
2015.'
apa: Weishäupl, E., Yasasin, E., & Schryen, G. (2015). A Multi-Theoretical Literature
Review on Information Security Investments using the Resource-Based View and the
Organizational Learning Theory. In International Conference on Information
Systems.
bibtex: '@inproceedings{Weishäupl_Yasasin_Schryen_2015, title={A Multi-Theoretical
Literature Review on Information Security Investments using the Resource-Based
View and the Organizational Learning Theory}, booktitle={International Conference
on Information Systems}, author={Weishäupl, Eva and Yasasin, Emrah and Schryen,
Guido}, year={2015} }'
chicago: Weishäupl, Eva, Emrah Yasasin, and Guido Schryen. “A Multi-Theoretical
Literature Review on Information Security Investments Using the Resource-Based
View and the Organizational Learning Theory.” In International Conference on
Information Systems, 2015.
ieee: E. Weishäupl, E. Yasasin, and G. Schryen, “A Multi-Theoretical Literature
Review on Information Security Investments using the Resource-Based View and the
Organizational Learning Theory,” in International Conference on Information
Systems, 2015.
mla: Weishäupl, Eva, et al. “A Multi-Theoretical Literature Review on Information
Security Investments Using the Resource-Based View and the Organizational Learning
Theory.” International Conference on Information Systems, 2015.
short: 'E. Weishäupl, E. Yasasin, G. Schryen, in: International Conference on Information
Systems, 2015.'
date_created: 2018-11-14T11:25:38Z
date_updated: 2022-01-06T07:02:03Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-07T11:45:31Z
date_updated: 2018-12-13T15:09:32Z
file_id: '6038'
file_name: ICIS PROCEEDINGS PAPER - Security Investments.pdf
file_size: 958019
relation: main_file
file_date_updated: 2018-12-13T15:09:32Z
has_accepted_license: '1'
keyword:
- Information Security
- Investment
- Literature review
- Resource-based View
- Organi-zational Learning Theory
- Multi-theoretical Perspective
language:
- iso: eng
oa: '1'
publication: International Conference on Information Systems
status: public
title: A Multi-Theoretical Literature Review on Information Security Investments using
the Resource-Based View and the Organizational Learning Theory
type: conference
user_id: '61579'
year: '2015'
...
---
_id: '48838'
abstract:
- lang: eng
text: 'The majority of algorithms can be controlled or adjusted by parameters. Their
values can substantially affect the algorithms’ performance. Since the manual
exploration of the parameter space is tedious – even for few parameters – several
automatic procedures for parameter tuning have been proposed. Recent approaches
also take into account some characteristic properties of the problem instances,
frequently termed instance features. Our contribution is the proposal of a novel
concept for feature-based algorithm parameter tuning, which applies an approximating
surrogate model for learning the continuous feature-parameter mapping. To accomplish
this, we learn a joint model of the algorithm performance based on both the algorithm
parameters and the instance features. The required data is gathered using a recently
proposed acquisition function for model refinement in surrogate-based optimization:
the profile expected improvement. This function provides an avenue for maximizing
the information required for the feature-parameter mapping, i.e., the mapping
from instance features to the corresponding optimal algorithm parameters. The
approach is validated by applying the tuner to exemplary evolutionary algorithms
and problems, for which theoretically grounded or heuristically determined feature-parameter
mappings are available.'
author:
- first_name: Jakob
full_name: Bossek, Jakob
id: '102979'
last_name: Bossek
orcid: 0000-0002-4121-4668
- first_name: Bernd
full_name: Bischl, Bernd
last_name: Bischl
- first_name: Tobias
full_name: Wagner, Tobias
last_name: Wagner
- first_name: Günter
full_name: Rudolph, Günter
last_name: Rudolph
citation:
ama: 'Bossek J, Bischl B, Wagner T, Rudolph G. Learning Feature-Parameter Mappings
for Parameter Tuning via the Profile Expected Improvement. In: Proceedings
of the Genetic and Evolutionary Computation Conference. GECCO ’15. Association
for Computing Machinery; 2015:1319–1326. doi:10.1145/2739480.2754673'
apa: Bossek, J., Bischl, B., Wagner, T., & Rudolph, G. (2015). Learning Feature-Parameter
Mappings for Parameter Tuning via the Profile Expected Improvement. Proceedings
of the Genetic and Evolutionary Computation Conference, 1319–1326. https://doi.org/10.1145/2739480.2754673
bibtex: '@inproceedings{Bossek_Bischl_Wagner_Rudolph_2015, place={New York, NY,
USA}, series={GECCO ’15}, title={Learning Feature-Parameter Mappings for Parameter
Tuning via the Profile Expected Improvement}, DOI={10.1145/2739480.2754673},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference},
publisher={Association for Computing Machinery}, author={Bossek, Jakob and Bischl,
Bernd and Wagner, Tobias and Rudolph, Günter}, year={2015}, pages={1319–1326},
collection={GECCO ’15} }'
chicago: 'Bossek, Jakob, Bernd Bischl, Tobias Wagner, and Günter Rudolph. “Learning
Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.”
In Proceedings of the Genetic and Evolutionary Computation Conference,
1319–1326. GECCO ’15. New York, NY, USA: Association for Computing Machinery,
2015. https://doi.org/10.1145/2739480.2754673.'
ieee: 'J. Bossek, B. Bischl, T. Wagner, and G. Rudolph, “Learning Feature-Parameter
Mappings for Parameter Tuning via the Profile Expected Improvement,” in Proceedings
of the Genetic and Evolutionary Computation Conference, 2015, pp. 1319–1326,
doi: 10.1145/2739480.2754673.'
mla: Bossek, Jakob, et al. “Learning Feature-Parameter Mappings for Parameter Tuning
via the Profile Expected Improvement.” Proceedings of the Genetic and Evolutionary
Computation Conference, Association for Computing Machinery, 2015, pp. 1319–1326,
doi:10.1145/2739480.2754673.
short: 'J. Bossek, B. Bischl, T. Wagner, G. Rudolph, in: Proceedings of the Genetic
and Evolutionary Computation Conference, Association for Computing Machinery,
New York, NY, USA, 2015, pp. 1319–1326.'
date_created: 2023-11-14T15:58:51Z
date_updated: 2023-12-13T10:40:30Z
department:
- _id: '819'
doi: 10.1145/2739480.2754673
extern: '1'
keyword:
- evolutionary algorithms
- model-based optimization
- parameter tuning
language:
- iso: eng
page: 1319–1326
place: New York, NY, USA
publication: Proceedings of the Genetic and Evolutionary Computation Conference
publication_identifier:
isbn:
- 978-1-4503-3472-3
publication_status: published
publisher: Association for Computing Machinery
series_title: GECCO ’15
status: public
title: Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected
Improvement
type: conference
user_id: '102979'
year: '2015'
...
---
_id: '4035'
abstract:
- lang: eng
text: We examine whether the mandated introduction of International Financial Reporting
Standards (IFRS) is associated with the propensity to access the public rather
than private debt market and the cost of debt. We use a global sample of public
bonds and private loans and find that mandatory IFRS adopters are more likely,
post-IFRS, to issue bonds than to borrow privately. We also find that mandatory
IFRS adopters pay lower bond yield spreads, but not lower loan spreads, after
the mandate. These findings are consistent with debt providers responding positively
to financial reporting of higher quality and comparability, but only when there
is a greater reliance on publicly available financial statements than private
communication. Lastly, we document that the observed debt market benefits are
concentrated in countries with larger differences between domestic GAAP and IFRS
and are present even for EU countries that did not experience concurrent financial
reporting enforcement or other institutional reforms. Overall, our study documents
positive economic consequences around the mandated IFRS adoption for corporate
debt financing and, in particular, for bond financing.
author:
- first_name: Annita
full_name: Florou, Annita
last_name: Florou
- first_name: Urska
full_name: Kosi, Urska
id: '54068'
last_name: Kosi
citation:
ama: Florou A, Kosi U. Does mandatory IFRS adoption facilitate debt financing? Review
of Accounting Studies. 2015;20(4):1407-1456. doi:10.1007/s11142
apa: Florou, A., & Kosi, U. (2015). Does mandatory IFRS adoption facilitate
debt financing? Review of Accounting Studies, 20(4), 1407–1456.
https://doi.org/10.1007/s11142
bibtex: '@article{Florou_Kosi_2015, title={Does mandatory IFRS adoption facilitate
debt financing?}, volume={20}, DOI={10.1007/s11142},
number={4}, journal={Review of Accounting Studies}, author={Florou, Annita and
Kosi, Urska}, year={2015}, pages={1407–1456} }'
chicago: 'Florou, Annita, and Urska Kosi. “Does Mandatory IFRS Adoption Facilitate
Debt Financing?” Review of Accounting Studies 20, no. 4 (2015): 1407–56.
https://doi.org/10.1007/s11142.'
ieee: 'A. Florou and U. Kosi, “Does mandatory IFRS adoption facilitate debt financing?,”
Review of Accounting Studies, vol. 20, no. 4, pp. 1407–1456, 2015, doi:
10.1007/s11142.'
mla: Florou, Annita, and Urska Kosi. “Does Mandatory IFRS Adoption Facilitate Debt
Financing?” Review of Accounting Studies, vol. 20, no. 4, 2015, pp. 1407–56,
doi:10.1007/s11142.
short: A. Florou, U. Kosi, Review of Accounting Studies 20 (2015) 1407–1456.
date_created: 2018-08-22T07:47:41Z
date_updated: 2023-01-24T15:32:37Z
department:
- _id: '551'
- _id: '635'
- _id: '186'
doi: 10.1007/s11142
extern: '1'
intvolume: ' 20'
issue: '4'
jel:
- G15
- K22
- M41
- M48
keyword:
- Accounting regulation
- IFRS
- Accounting quality
- Public and private debt markets
- Cost of debt
language:
- iso: eng
page: 1407-1456
publication: Review of Accounting Studies
publication_identifier:
eissn:
- 1573-7136
publication_status: published
status: public
title: Does mandatory IFRS adoption facilitate debt financing?
type: journal_article
user_id: '54068'
volume: 20
year: '2015'
...
---
_id: '4476'
abstract:
- lang: ger
text: 'Auseinandersetzungen über Forschungsmethodologien haben in den Bildungswissenschaften
lange Tradition. Sie werden häufig unversöhnlich und mit Profilierung der Gegensätze
geführt. Für uns hängt die Sinnhaftigkeit einer Forschungskonzeption von der Problemstellung
und dem Erkenntnisinteresse ab. Dies gilt auch für Design-Based Research (DBR).
Dieser Ansatz entstand als Reaktion auf die Kritik an mangelnder praktischer Anwendung
von Befunden aus der empirisch-analytischen Lehr-Lernforschung. Als Ergebnis werden
Theorien angestrebt, die für die Praxis einen Nutzen bieten und zugleich über
die Anwendung in einer singulären Situation hinausgehen. Wir wollen folgenden
Fragen nachgehen: Wo liegen die Gemeinsamkeiten, wo die Spezifika von DBR gegenüber
bestehenden Methodologien? Wie wird der Generalisierungsanspruch von Theorien
innerhalb von DBR verstanden und umgesetzt? Für welche Erkenntnisinteressen eignet
sich DBR? Welche Methoden sind für DBR sinnvoll und können wie angewendet werden?'
author:
- first_name: Taiga
full_name: Brahm, Taiga
last_name: Brahm
- first_name: Tobias
full_name: Jenert, Tobias
id: '71994'
last_name: Jenert
orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
ama: 'Brahm T, Jenert T. Wie kann über DBR die wissenschaftliche und praktische
Relevanz der Forschung gesichert werden? In: Humboldt-Universität; 2014.'
apa: 'Brahm, T., & Jenert, T. (2014). Wie kann über DBR die wissenschaftliche
und praktische Relevanz der Forschung gesichert werden? Presented at the 24. Kongress
der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE), Berlin: Humboldt-Universität.'
bibtex: '@inproceedings{Brahm_Jenert_2014, title={Wie kann über DBR die wissenschaftliche
und praktische Relevanz der Forschung gesichert werden?}, publisher={Humboldt-Universität},
author={Brahm, Taiga and Jenert, Tobias}, year={2014} }'
chicago: Brahm, Taiga, and Tobias Jenert. “Wie Kann Über DBR Die Wissenschaftliche
Und Praktische Relevanz Der Forschung Gesichert Werden?” Humboldt-Universität,
2014.
ieee: T. Brahm and T. Jenert, “Wie kann über DBR die wissenschaftliche und praktische
Relevanz der Forschung gesichert werden?,” presented at the 24. Kongress der Deutschen
Gesellschaft für Erziehungswissenschaft (DGfE), Berlin, 2014.
mla: Brahm, Taiga, and Tobias Jenert. Wie Kann Über DBR Die Wissenschaftliche
Und Praktische Relevanz Der Forschung Gesichert Werden? Humboldt-Universität,
2014.
short: 'T. Brahm, T. Jenert, in: Humboldt-Universität, 2014.'
conference:
end_date: 2014-03-12
location: Berlin
name: 24. Kongress der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE)
start_date: 2014-03-09
date_created: 2018-09-19T08:14:35Z
date_updated: 2022-01-06T07:01:06Z
department:
- _id: '208'
- _id: '282'
extern: '1'
keyword:
- design-based research
- gestatlungsbasierte Forschung
- Erziehungswissenschaft
- Design
- Mixed Methods
publisher: Humboldt-Universität
status: public
title: Wie kann über DBR die wissenschaftliche und praktische Relevanz der Forschung
gesichert werden?
type: conference
user_id: '51057'
year: '2014'
...
---
_id: '11861'
abstract:
- lang: eng
text: 'In this contribution we present a theoretical and experimental investigation
into the effects of reverberation and noise on features in the logarithmic mel
power spectral domain, an intermediate stage in the computation of the mel frequency
cepstral coefficients, prevalent in automatic speech recognition (ASR). Gaining
insight into the complex interaction between clean speech, noise, and noisy reverberant
speech features is essential for any ASR system to be robust against noise and
reverberation present in distant microphone input signals. The findings are gathered
in a probabilistic formulation of an observation model which may be used in model-based
feature compensation schemes. The proposed observation model extends previous
models in three major directions: First, the contribution of additive background
noise to the observation error is explicitly taken into account. Second, an energy
compensation constant is introduced which ensures an unbiased estimate of the
reverberant speech features, and, third, a recursive variant of the observation
model is developed resulting in reduced computational complexity when used in
model-based feature compensation. The experimental section is used to evaluate
the accuracy of the model and to describe how its parameters can be determined
from test data.'
author:
- first_name: Volker
full_name: Leutnant, Volker
last_name: Leutnant
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Leutnant V, Krueger A, Haeb-Umbach R. A New Observation Model in the Logarithmic
Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.
IEEE/ACM Transactions on Audio, Speech, and Language Processing. 2014;22(1):95-109.
doi:10.1109/TASLP.2013.2285480
apa: Leutnant, V., Krueger, A., & Haeb-Umbach, R. (2014). A New Observation
Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition
of Noisy Reverberant Speech. IEEE/ACM Transactions on Audio, Speech, and Language
Processing, 22(1), 95–109. https://doi.org/10.1109/TASLP.2013.2285480
bibtex: '@article{Leutnant_Krueger_Haeb-Umbach_2014, title={A New Observation Model
in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of
Noisy Reverberant Speech}, volume={22}, DOI={10.1109/TASLP.2013.2285480},
number={1}, journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing},
author={Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2014},
pages={95–109} }'
chicago: 'Leutnant, Volker, Alexander Krueger, and Reinhold Haeb-Umbach. “A New
Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic
Recognition of Noisy Reverberant Speech.” IEEE/ACM Transactions on Audio, Speech,
and Language Processing 22, no. 1 (2014): 95–109. https://doi.org/10.1109/TASLP.2013.2285480.'
ieee: V. Leutnant, A. Krueger, and R. Haeb-Umbach, “A New Observation Model in the
Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant
Speech,” IEEE/ACM Transactions on Audio, Speech, and Language Processing,
vol. 22, no. 1, pp. 95–109, 2014.
mla: Leutnant, Volker, et al. “A New Observation Model in the Logarithmic Mel Power
Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.” IEEE/ACM
Transactions on Audio, Speech, and Language Processing, vol. 22, no. 1, 2014,
pp. 95–109, doi:10.1109/TASLP.2013.2285480.
short: V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE/ACM Transactions on Audio,
Speech, and Language Processing 22 (2014) 95–109.
date_created: 2019-07-12T05:29:41Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASLP.2013.2285480
intvolume: ' 22'
issue: '1'
keyword:
- computational complexity
- reverberation
- speech recognition
- automatic speech recognition
- background noise
- clean speech
- computational complexity
- energy compensation
- logarithmic mel power spectral domain
- mel frequency cepstral coefficients
- microphone input signals
- model-based feature compensation schemes
- noisy reverberant speech automatic recognition
- noisy reverberant speech features
- reverberation
- Atmospheric modeling
- Computational modeling
- Noise
- Noise measurement
- Reverberation
- Speech
- Vectors
- Model-based feature compensation
- observation model for reverberant and noisy speech
- recursive observation model
- robust automatic speech recognition
language:
- iso: eng
page: 95-109
publication: IEEE/ACM Transactions on Audio, Speech, and Language Processing
publication_identifier:
issn:
- 2329-9290
status: public
title: A New Observation Model in the Logarithmic Mel Power Spectral Domain for the
Automatic Recognition of Noisy Reverberant Speech
type: journal_article
user_id: '44006'
volume: 22
year: '2014'
...
---
_id: '4425'
abstract:
- lang: ger
text: Designbasierte Forschung zielt darauf, praktische Problemstellungen zu lösen
und gleichzeitig wissenschaftliche Theorien (weiter) zu entwickeln. Dabei durchläuft
designbasierte Forschung in der Regel die Phasen der Problemdefinition, der Entwicklung
eines didaktischen Designs, der zyklischen Design-Implementation sowie der Evaluation
und Reflexion in enger Kooperation von Wissenschaft und Praxis. Inwieweit es mittels
designbasierter Forschung gelingen kann, wissenschaftliche Gültigkeit und praktische
Relevanz von Forschung gleichermassen zu steigern, wird im Beitrag anhand des
Konzepts multipler Signifikanzen erörtert. Dabei wird diskutiert, wie die Gestaltung
der Kooperation von Forschenden und Praktikern/-innen dazu beitragen kann, die
praktische, statistische, klinische und wirtschaftliche Signifikanz des designbasierten
Forschungsprozesses sicherzustellen.
author:
- first_name: Taiga
full_name: Brahm, Taiga
last_name: Brahm
- first_name: Tobias
full_name: Jenert, Tobias
id: '71994'
last_name: Jenert
orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
ama: 'Brahm T, Jenert T. Wissenschafts-Praxis-Kooperation in designbasierter Forschung:
Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer Relevanz.
Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B). 2014;(Band
27):45-62.'
apa: 'Brahm, T., & Jenert, T. (2014). Wissenschafts-Praxis-Kooperation in designbasierter
Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer
Relevanz. Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte (ZBW-B),
Band 27, 45–62.'
bibtex: '@article{Brahm_Jenert_2014, title={Wissenschafts-Praxis-Kooperation in
designbasierter Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit
und praktischer Relevanz}, number={Band 27}, journal={Zeitschrift für Berufs-und
Wirtschaftspädagogik-Beihefte (ZBW-B)}, publisher={Steiner}, author={Brahm, Taiga
and Jenert, Tobias}, year={2014}, pages={45–62} }'
chicago: 'Brahm, Taiga, and Tobias Jenert. “Wissenschafts-Praxis-Kooperation in
Designbasierter Forschung: Im Spannungsfeld Zwischen Wissenschaftlicher Gültigkeit
Und Praktischer Relevanz.” Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte
(ZBW-B), no. Band 27 (2014): 45–62.'
ieee: 'T. Brahm and T. Jenert, “Wissenschafts-Praxis-Kooperation in designbasierter
Forschung: Im Spannungsfeld zwischen wissenschaftlicher Gültigkeit und praktischer
Relevanz,” Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B),
no. Band 27, pp. 45–62, 2014.'
mla: 'Brahm, Taiga, and Tobias Jenert. “Wissenschafts-Praxis-Kooperation in Designbasierter
Forschung: Im Spannungsfeld Zwischen Wissenschaftlicher Gültigkeit Und Praktischer
Relevanz.” Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte (ZBW-B),
no. Band 27, Steiner, 2014, pp. 45–62.'
short: T. Brahm, T. Jenert, Zeitschrift Für Berufs-Und Wirtschaftspädagogik-Beihefte
(ZBW-B) (2014) 45–62.
date_created: 2018-09-18T09:13:31Z
date_updated: 2024-03-21T14:43:48Z
department:
- _id: '208'
- _id: '282'
extern: '1'
issue: Band 27
keyword:
- Design-based research
- design research
- validity
- significance
- Bildungsforschung
- designbasierte Forschung
- Wissenschafts-Praxis-Kommunikation
language:
- iso: eng
page: 45-62
publication: Zeitschrift für Berufs-und Wirtschaftspädagogik-Beihefte (ZBW-B)
publication_identifier:
issn:
- 0172-2875
publisher: Steiner
quality_controlled: '1'
status: public
title: 'Wissenschafts-Praxis-Kooperation in designbasierter Forschung: Im Spannungsfeld
zwischen wissenschaftlicher Gültigkeit und praktischer Relevanz'
type: journal_article
user_id: '71994'
year: '2014'
...
---
_id: '20863'
abstract:
- lang: eng
text: This article examines and extends research on the relation between the capital
asset pricing model market beta, accounting risk measures and macroeconomic risk
factors. We employ a beta decomposition approach that nests competing models with
different business risk proxies and allows to frame cross-model comparison. Because
model tests require estimated independent variables resulting in measurement error,
we empirically estimate three comparable model specifications with instrumental
variable estimators and for the first time provide thorough instrument diagnostics
in this setting. Correcting for the heretofore neglected weak instruments problem
we find that growth risk (i.e., the risk of firm sales variations that are inconsistent
with the market wide trends), is the business risk that explains cross-sectional
variations in market beta best.
article_type: original
author:
- first_name: Tobias
full_name: Schlueter, Tobias
last_name: Schlueter
- first_name: Sönke
full_name: Sievers, Sönke
id: '46447'
last_name: Sievers
citation:
ama: 'Schlueter T, Sievers S. Determinants of market beta: the impacts of firm-specific
accounting figures and market conditions. Review of Quantitative Finance and
Accounting (VHB-JOURQUAL 3 Ranking B). 2013;(3):535-570. doi:10.1007/s11156-013-0352-1'
apa: 'Schlueter, T., & Sievers, S. (2013). Determinants of market beta: the
impacts of firm-specific accounting figures and market conditions. Review of
Quantitative Finance and Accounting (VHB-JOURQUAL 3 Ranking B), (3), 535–570.
https://doi.org/10.1007/s11156-013-0352-1'
bibtex: '@article{Schlueter_Sievers_2013, title={Determinants of market beta: the
impacts of firm-specific accounting figures and market conditions}, DOI={10.1007/s11156-013-0352-1},
number={3}, journal={Review of Quantitative Finance and Accounting (VHB-JOURQUAL
3 Ranking B)}, author={Schlueter, Tobias and Sievers, Sönke}, year={2013}, pages={535–570}
}'
chicago: 'Schlueter, Tobias, and Sönke Sievers. “Determinants of Market Beta: The
Impacts of Firm-Specific Accounting Figures and Market Conditions.” Review
of Quantitative Finance and Accounting (VHB-JOURQUAL 3 Ranking B), no. 3 (2013):
535–70. https://doi.org/10.1007/s11156-013-0352-1.'
ieee: 'T. Schlueter and S. Sievers, “Determinants of market beta: the impacts of
firm-specific accounting figures and market conditions,” Review of Quantitative
Finance and Accounting (VHB-JOURQUAL 3 Ranking B), no. 3, pp. 535–570, 2013.'
mla: 'Schlueter, Tobias, and Sönke Sievers. “Determinants of Market Beta: The Impacts
of Firm-Specific Accounting Figures and Market Conditions.” Review of Quantitative
Finance and Accounting (VHB-JOURQUAL 3 Ranking B), no. 3, 2013, pp. 535–70,
doi:10.1007/s11156-013-0352-1.'
short: T. Schlueter, S. Sievers, Review of Quantitative Finance and Accounting (VHB-JOURQUAL
3 Ranking B) (2013) 535–570.
date_created: 2021-01-05T09:28:36Z
date_updated: 2022-01-06T06:54:41Z
department:
- _id: '275'
doi: 10.1007/s11156-013-0352-1
extern: '1'
issue: '3'
jel:
- C36
- G11
- G12
keyword:
- CAPM
- Cost of capital
- Accounting beta
- Intrinsic business risk
- Growth risk
- Instrumental variables
language:
- iso: eng
main_file_link:
- url: https://link.springer.com/article/10.1007/s11156-013-0352-1
page: 535-570
publication: Review of Quantitative Finance and Accounting (VHB-JOURQUAL 3 Ranking
B)
publication_identifier:
issn:
- 0924-865X
- 1573-7179
publication_status: published
quality_controlled: '1'
status: public
title: 'Determinants of market beta: the impacts of firm-specific accounting figures
and market conditions'
type: journal_article
user_id: '46447'
year: '2013'
...
---
_id: '5108'
abstract:
- lang: eng
text: 'This study integrates the government in the context of company valuation.
Our framework allows to analyze and to quantify the risk-sharing effects and conflicts
of interest between the government and the shareholders when firms follow different
financial policies. We provide novel evidence that firms with fixed future levels
of debt might invest more than socially desirable. Economically, this happens
if the gain in tax-shields is big enough to outweigh the loss in the unlevered
firm value. Our findings have implications for the practice of investment subsidy
programs provided by the government to avoid fostering investments beyond the
socially optimal level. '
article_type: original
author:
- first_name: Daniel
full_name: Kreutzmann, Daniel
last_name: Kreutzmann
- first_name: Sönke
full_name: Sievers, Sönke
id: '46447'
last_name: Sievers
- first_name: Christian
full_name: Mueller, Christian
last_name: Mueller
citation:
ama: Kreutzmann D, Sievers S, Mueller C. Investment distortions and the value of
the government’s tax claim. Applied Financial Economics (VHB-JOURQUAL 3 Ranking
C). 2013;23(11):977-989. doi:10.1080/09603107.2013.786161
apa: Kreutzmann, D., Sievers, S., & Mueller, C. (2013). Investment distortions
and the value of the government’s tax claim. Applied Financial Economics (VHB-JOURQUAL
3 Ranking C), 23(11), 977–989. https://doi.org/10.1080/09603107.2013.786161
bibtex: '@article{Kreutzmann_Sievers_Mueller_2013, title={Investment distortions
and the value of the government’s tax claim}, volume={23}, DOI={10.1080/09603107.2013.786161},
number={11}, journal={Applied Financial Economics (VHB-JOURQUAL 3 Ranking C)},
publisher={Taylor \& Francis}, author={Kreutzmann, Daniel and Sievers, Sönke
and Mueller, Christian}, year={2013}, pages={977–989} }'
chicago: 'Kreutzmann, Daniel, Sönke Sievers, and Christian Mueller. “Investment
Distortions and the Value of the Government’s Tax Claim.” Applied Financial
Economics (VHB-JOURQUAL 3 Ranking C) 23, no. 11 (2013): 977–89. https://doi.org/10.1080/09603107.2013.786161.'
ieee: D. Kreutzmann, S. Sievers, and C. Mueller, “Investment distortions and the
value of the government’s tax claim,” Applied Financial Economics (VHB-JOURQUAL
3 Ranking C), vol. 23, no. 11, pp. 977–989, 2013.
mla: Kreutzmann, Daniel, et al. “Investment Distortions and the Value of the Government’s
Tax Claim.” Applied Financial Economics (VHB-JOURQUAL 3 Ranking C), vol.
23, no. 11, Taylor \& Francis, 2013, pp. 977–89, doi:10.1080/09603107.2013.786161.
short: D. Kreutzmann, S. Sievers, C. Mueller, Applied Financial Economics (VHB-JOURQUAL
3 Ranking C) 23 (2013) 977–989.
date_created: 2018-10-31T07:50:58Z
date_updated: 2022-01-06T07:01:38Z
department:
- _id: '275'
doi: 10.1080/09603107.2013.786161
extern: '1'
intvolume: ' 23'
issue: '11'
jel:
- G31
- G32
- H21
- H25
keyword:
- corporate tax claim
- company valuation
- optimal investment
- cost of capital
language:
- iso: eng
main_file_link:
- url: https://www.tandfonline.com/doi/full/10.1080/09603107.2013.786161#.VE5YmBZwmAd
page: 977-989
publication: Applied Financial Economics (VHB-JOURQUAL 3 Ranking C)
publication_status: published
publisher: Taylor \& Francis
status: public
title: Investment distortions and the value of the government's tax claim
type: journal_article
user_id: '46447'
volume: 23
year: '2013'
...
---
_id: '10620'
author:
- first_name: Jahanzeb
full_name: Anwer, Jahanzeb
last_name: Anwer
- first_name: Sebastian
full_name: Meisner, Sebastian
last_name: Meisner
- first_name: Marco
full_name: Platzner, Marco
id: '398'
last_name: Platzner
citation:
ama: 'Anwer J, Meisner S, Platzner M. Dynamic reliability management: Reconfiguring
reliability-levels of hardware designs at runtime. In: Reconfigurable Computing
and FPGAs (ReConFig), 2013 International Conference On. ; 2013:1-6. doi:10.1109/ReConFig.2013.6732280'
apa: 'Anwer, J., Meisner, S., & Platzner, M. (2013). Dynamic reliability management:
Reconfiguring reliability-levels of hardware designs at runtime. In Reconfigurable
Computing and FPGAs (ReConFig), 2013 International Conference on (pp. 1–6).
https://doi.org/10.1109/ReConFig.2013.6732280'
bibtex: '@inproceedings{Anwer_Meisner_Platzner_2013, title={Dynamic reliability
management: Reconfiguring reliability-levels of hardware designs at runtime},
DOI={10.1109/ReConFig.2013.6732280},
booktitle={Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
on}, author={Anwer, Jahanzeb and Meisner, Sebastian and Platzner, Marco}, year={2013},
pages={1–6} }'
chicago: 'Anwer, Jahanzeb, Sebastian Meisner, and Marco Platzner. “Dynamic Reliability
Management: Reconfiguring Reliability-Levels of Hardware Designs at Runtime.”
In Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
On, 1–6, 2013. https://doi.org/10.1109/ReConFig.2013.6732280.'
ieee: 'J. Anwer, S. Meisner, and M. Platzner, “Dynamic reliability management: Reconfiguring
reliability-levels of hardware designs at runtime,” in Reconfigurable Computing
and FPGAs (ReConFig), 2013 International Conference on, 2013, pp. 1–6.'
mla: 'Anwer, Jahanzeb, et al. “Dynamic Reliability Management: Reconfiguring Reliability-Levels
of Hardware Designs at Runtime.” Reconfigurable Computing and FPGAs (ReConFig),
2013 International Conference On, 2013, pp. 1–6, doi:10.1109/ReConFig.2013.6732280.'
short: 'J. Anwer, S. Meisner, M. Platzner, in: Reconfigurable Computing and FPGAs
(ReConFig), 2013 International Conference On, 2013, pp. 1–6.'
date_created: 2019-07-10T09:32:57Z
date_updated: 2022-01-06T06:50:48Z
department:
- _id: '78'
doi: 10.1109/ReConFig.2013.6732280
keyword:
- fault tolerant computing
- field programmable gate arrays
- logic design
- reliability
- BYU-LANL tool
- DRM tool flow
- FPGA based hardware designs
- avionic application
- device technologies
- dynamic reliability management
- fault-tolerant operation
- hardware designs
- reconfiguring reliability levels
- space applications
- Field programmable gate arrays
- Hardware
- Redundancy
- Reliability engineering
- Runtime
- Tunneling magnetoresistance
language:
- iso: eng
page: 1-6
publication: Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference
on
status: public
title: 'Dynamic reliability management: Reconfiguring reliability-levels of hardware
designs at runtime'
type: conference
user_id: '3118'
year: '2013'
...
---
_id: '11740'
abstract:
- lang: eng
text: In this contribution we derive the Maximum A-Posteriori (MAP) estimates of
the parameters of a Gaussian Mixture Model (GMM) in the presence of noisy observations.
We assume the distortion to be white Gaussian noise of known mean and variance.
An approximate conjugate prior of the GMM parameters is derived allowing for a
computationally efficient implementation in a sequential estimation framework.
Simulations on artificially generated data demonstrate the superiority of the
proposed method compared to the Maximum Likelihood technique and to the ordinary
MAP approach, whose estimates are corrected by the known statistics of the distortion
in a straightforward manner.
author:
- first_name: Aleksej
full_name: Chinaev, Aleksej
last_name: Chinaev
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Chinaev A, Haeb-Umbach R. MAP-based Estimation of the Parameters of a Gaussian
Mixture Model in the Presence of Noisy Observations. In: 38th International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2013). ; 2013:3352-3356.
doi:10.1109/ICASSP.2013.6638279'
apa: Chinaev, A., & Haeb-Umbach, R. (2013). MAP-based Estimation of the Parameters
of a Gaussian Mixture Model in the Presence of Noisy Observations. In 38th
International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013)
(pp. 3352–3356). https://doi.org/10.1109/ICASSP.2013.6638279
bibtex: '@inproceedings{Chinaev_Haeb-Umbach_2013, title={MAP-based Estimation of
the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations},
DOI={10.1109/ICASSP.2013.6638279},
booktitle={38th International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2013)}, author={Chinaev, Aleksej and Haeb-Umbach, Reinhold}, year={2013},
pages={3352–3356} }'
chicago: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “MAP-Based Estimation of the
Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations.”
In 38th International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2013), 3352–56, 2013. https://doi.org/10.1109/ICASSP.2013.6638279.
ieee: A. Chinaev and R. Haeb-Umbach, “MAP-based Estimation of the Parameters of
a Gaussian Mixture Model in the Presence of Noisy Observations,” in 38th International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013,
pp. 3352–3356.
mla: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “MAP-Based Estimation of the Parameters
of a Gaussian Mixture Model in the Presence of Noisy Observations.” 38th International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013,
pp. 3352–56, doi:10.1109/ICASSP.2013.6638279.
short: 'A. Chinaev, R. Haeb-Umbach, in: 38th International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2013), 2013, pp. 3352–3356.'
date_created: 2019-07-12T05:27:20Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
doi: 10.1109/ICASSP.2013.6638279
keyword:
- Gaussian noise
- maximum likelihood estimation
- parameter estimation
- GMM parameter
- Gaussian mixture model
- MAP estimation
- Map-based estimation
- maximum a-posteriori estimation
- maximum likelihood technique
- noisy observation
- sequential estimation framework
- white Gaussian noise
- Additive noise
- Gaussian mixture model
- Maximum likelihood estimation
- Noise measurement
- Gaussian mixture model
- Maximum a posteriori estimation
- Maximum likelihood estimation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2013/ChHa13.pdf
oa: '1'
page: 3352-3356
publication: 38th International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2013)
publication_identifier:
issn:
- 1520-6149
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2013/ChHa13_Poster.pdf
status: public
title: MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence
of Noisy Observations
type: conference
user_id: '44006'
year: '2013'
...
---
_id: '11862'
abstract:
- lang: eng
text: In this contribution we extend a previously proposed Bayesian approach for
the enhancement of reverberant logarithmic mel power spectral coefficients for
robust automatic speech recognition to the additional compensation of background
noise. A recently proposed observation model is employed whose time-variant observation
error statistics are obtained as a side product of the inference of the a posteriori
probability density function of the clean speech feature vectors. Further a reduction
of the computational effort and the memory requirements are achieved by using
a recursive formulation of the observation model. The performance of the proposed
algorithms is first experimentally studied on a connected digits recognition task
with artificially created noisy reverberant data. It is shown that the use of
the time-variant observation error model leads to a significant error rate reduction
at low signal-to-noise ratios compared to a time-invariant model. Further experiments
were conducted on a 5000 word task recorded in a reverberant and noisy environment.
A significant word error rate reduction was obtained demonstrating the effectiveness
of the approach on real-world data.
author:
- first_name: Volker
full_name: Leutnant, Volker
last_name: Leutnant
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Leutnant V, Krueger A, Haeb-Umbach R. Bayesian Feature Enhancement for Reverberation
and Noise Robust Speech Recognition. IEEE Transactions on Audio, Speech, and
Language Processing. 2013;21(8):1640-1652. doi:10.1109/TASL.2013.2258013
apa: Leutnant, V., Krueger, A., & Haeb-Umbach, R. (2013). Bayesian Feature Enhancement
for Reverberation and Noise Robust Speech Recognition. IEEE Transactions on
Audio, Speech, and Language Processing, 21(8), 1640–1652. https://doi.org/10.1109/TASL.2013.2258013
bibtex: '@article{Leutnant_Krueger_Haeb-Umbach_2013, title={Bayesian Feature Enhancement
for Reverberation and Noise Robust Speech Recognition}, volume={21}, DOI={10.1109/TASL.2013.2258013},
number={8}, journal={IEEE Transactions on Audio, Speech, and Language Processing},
author={Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2013},
pages={1640–1652} }'
chicago: 'Leutnant, Volker, Alexander Krueger, and Reinhold Haeb-Umbach. “Bayesian
Feature Enhancement for Reverberation and Noise Robust Speech Recognition.” IEEE
Transactions on Audio, Speech, and Language Processing 21, no. 8 (2013): 1640–52.
https://doi.org/10.1109/TASL.2013.2258013.'
ieee: V. Leutnant, A. Krueger, and R. Haeb-Umbach, “Bayesian Feature Enhancement
for Reverberation and Noise Robust Speech Recognition,” IEEE Transactions on
Audio, Speech, and Language Processing, vol. 21, no. 8, pp. 1640–1652, 2013.
mla: Leutnant, Volker, et al. “Bayesian Feature Enhancement for Reverberation and
Noise Robust Speech Recognition.” IEEE Transactions on Audio, Speech, and Language
Processing, vol. 21, no. 8, 2013, pp. 1640–52, doi:10.1109/TASL.2013.2258013.
short: V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech,
and Language Processing 21 (2013) 1640–1652.
date_created: 2019-07-12T05:29:42Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASL.2013.2258013
intvolume: ' 21'
issue: '8'
keyword:
- Bayes methods
- compensation
- error statistics
- reverberation
- speech recognition
- Bayesian feature enhancement
- background noise
- clean speech feature vectors
- compensation
- connected digits recognition task
- error statistics
- memory requirements
- noisy reverberant data
- posteriori probability density function
- recursive formulation
- reverberant logarithmic mel power spectral coefficients
- robust automatic speech recognition
- signal-to-noise ratios
- time-variant observation
- word error rate reduction
- Robust automatic speech recognition
- model-based Bayesian feature enhancement
- observation model for reverberant and noisy speech
- recursive observation model
language:
- iso: eng
page: 1640-1652
publication: IEEE Transactions on Audio, Speech, and Language Processing
status: public
title: Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition
type: journal_article
user_id: '44006'
volume: 21
year: '2013'
...
---
_id: '11818'
abstract:
- lang: eng
text: In this paper we present a system for indoor navigation based on received
signal strength index information of Wireless-LAN access points and relative position
estimates. The relative position information is gathered from inertial smartphone
sensors using a step detection and an orientation estimate. Our map data is hosted
on a server employing a map renderer and a SQL database. The database includes
a complete multilevel office building, within which the user can navigate. During
navigation, the client retrieves the position estimate from the server, together
with the corresponding map tiles to visualize the user's position on the smartphone
display.
author:
- first_name: Manh Kha
full_name: Hoang, Manh Kha
last_name: Hoang
- first_name: Sarah
full_name: Schmitz, Sarah
last_name: Schmitz
- first_name: Christian
full_name: Drueke, Christian
last_name: Drueke
- first_name: Dang Hai Tran
full_name: Vu, Dang Hai Tran
last_name: Vu
- first_name: Joerg
full_name: Schmalenstroeer, Joerg
id: '460'
last_name: Schmalenstroeer
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Hoang MK, Schmitz S, Drueke C, Vu DHT, Schmalenstroeer J, Haeb-Umbach R. Server
based indoor navigation using RSSI and inertial sensor information. In: Positioning
Navigation and Communication (WPNC), 2013 10th Workshop On. ; 2013:1-6. doi:10.1109/WPNC.2013.6533263'
apa: Hoang, M. K., Schmitz, S., Drueke, C., Vu, D. H. T., Schmalenstroeer, J., &
Haeb-Umbach, R. (2013). Server based indoor navigation using RSSI and inertial
sensor information. Positioning Navigation and Communication (WPNC), 2013 10th
Workshop On, 1–6. https://doi.org/10.1109/WPNC.2013.6533263
bibtex: '@inproceedings{Hoang_Schmitz_Drueke_Vu_Schmalenstroeer_Haeb-Umbach_2013,
title={Server based indoor navigation using RSSI and inertial sensor information},
DOI={10.1109/WPNC.2013.6533263},
booktitle={Positioning Navigation and Communication (WPNC), 2013 10th Workshop
on}, author={Hoang, Manh Kha and Schmitz, Sarah and Drueke, Christian and Vu,
Dang Hai Tran and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2013},
pages={1–6} }'
chicago: Hoang, Manh Kha, Sarah Schmitz, Christian Drueke, Dang Hai Tran Vu, Joerg
Schmalenstroeer, and Reinhold Haeb-Umbach. “Server Based Indoor Navigation Using
RSSI and Inertial Sensor Information.” In Positioning Navigation and Communication
(WPNC), 2013 10th Workshop On, 1–6, 2013. https://doi.org/10.1109/WPNC.2013.6533263.
ieee: 'M. K. Hoang, S. Schmitz, C. Drueke, D. H. T. Vu, J. Schmalenstroeer, and
R. Haeb-Umbach, “Server based indoor navigation using RSSI and inertial sensor
information,” in Positioning Navigation and Communication (WPNC), 2013 10th
Workshop on, 2013, pp. 1–6, doi: 10.1109/WPNC.2013.6533263.'
mla: Hoang, Manh Kha, et al. “Server Based Indoor Navigation Using RSSI and Inertial
Sensor Information.” Positioning Navigation and Communication (WPNC), 2013
10th Workshop On, 2013, pp. 1–6, doi:10.1109/WPNC.2013.6533263.
short: 'M.K. Hoang, S. Schmitz, C. Drueke, D.H.T. Vu, J. Schmalenstroeer, R. Haeb-Umbach,
in: Positioning Navigation and Communication (WPNC), 2013 10th Workshop On, 2013,
pp. 1–6.'
date_created: 2019-07-12T05:28:51Z
date_updated: 2023-10-26T08:09:36Z
department:
- _id: '54'
doi: 10.1109/WPNC.2013.6533263
keyword:
- SQL
- navigation
- smart phones
- wireless LAN
- RSSI
- SQL database
- complete multilevel office building
- inertial sensor information
- inertial smartphone sensors
- map renderer
- received signal strength index information
- relative position estimates
- server based indoor navigation
- step detection
- wireless-LAN access points
- Smartphone
- fingerprint
- indoor navigation
- map tile
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2013/HoScDrTrScHa2013.pdf
oa: '1'
page: 1-6
publication: Positioning Navigation and Communication (WPNC), 2013 10th Workshop on
quality_controlled: '1'
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2013/HoScDrTrScHa2013_Poster.pdf
status: public
title: Server based indoor navigation using RSSI and inertial sensor information
type: conference
user_id: '460'
year: '2013'
...
---
_id: '37109'
abstract:
- lang: eng
text: This study examines the effect of audit on private firms’ cost of debt. We
use a sample of 1,949 small private firms operating in the period 2006-2010 with
optional financial statement audit. High quality data allows us to construct a
more precise interest rate measure than existing studies employ. After controlling
for obvious sources of demand for voluntary audits (ownership complexity, subsidiary
status, bank relations), we find a robust central result that voluntary audits
increase rather than decrease the cost of debt financing, contrary to several
existing studies. This finding indicates that voluntary audits are generally treated
as “adopting a label” and penalised by creditors, regardless of the perceived
auditor quality as a result of the lemon problem in the audit market. Even Big-4
audits increase the cost of debt, likely as a result due to the lemon problem
in the audit market, although the increase is smaller than for non-Big-4 audits.
The results are sensitive to the estimation method used (OLS, Heckman’s two-step,
PSM) and (sub-)sample selection. We show that disregarding the underlying assumptions
of these estimation methods may lead to incorrect inferences. Additional analyses
show that audited firms’ reported earnings are less informative about future operating
performance than earnings of their unaudited counterparts. Our results also indicate
that results are sensitive to cost of debt definition and this might have affected
the results reported in the existing literature.
author:
- first_name: Urska
full_name: Kosi, Urska
id: '54068'
last_name: Kosi
- first_name: Jerney
full_name: Koren, Jerney
last_name: Koren
- first_name: Aljosa
full_name: Valentincic, Aljosa
last_name: Valentincic
citation:
ama: 'Kosi U, Koren J, Valentincic A. Does Financial Statement Audit Reduce the
Cost of Debt of Private Firms? In: ; 2013.'
apa: Kosi, U., Koren, J., & Valentincic, A. (2013). Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms? 36th Annual Congress of European
Accounting Association, Paris, France.
bibtex: '@inproceedings{Kosi_Koren_Valentincic_2013, title={Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms?}, author={Kosi, Urska and Koren,
Jerney and Valentincic, Aljosa}, year={2013} }'
chicago: Kosi, Urska, Jerney Koren, and Aljosa Valentincic. “Does Financial Statement
Audit Reduce the Cost of Debt of Private Firms?,” 2013.
ieee: U. Kosi, J. Koren, and A. Valentincic, “Does Financial Statement Audit Reduce
the Cost of Debt of Private Firms?,” presented at the 36th Annual Congress of
European Accounting Association, Paris, France, 2013.
mla: Kosi, Urska, et al. Does Financial Statement Audit Reduce the Cost of Debt
of Private Firms? 2013.
short: 'U. Kosi, J. Koren, A. Valentincic, in: 2013.'
conference:
end_date: 2013-05-05
location: Paris, France
name: 36th Annual Congress of European Accounting Association
start_date: 2013-05-02
date_created: 2023-01-17T13:25:30Z
date_updated: 2023-01-17T13:51:24Z
department:
- _id: '635'
- _id: '186'
- _id: '551'
extern: '1'
keyword:
- private firms
- voluntary audit
- cost of debt
- self-selection bias
- lemon problem
language:
- iso: eng
main_file_link:
- url: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2373987
status: public
title: Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?
type: conference
user_id: '88603'
year: '2013'
...
---
_id: '9783'
abstract:
- lang: eng
text: To optimize the ultrasound irradiation for cavitation based ultrasound applications
like sonochemistry or ultrasound cleaning, the correlation between cavitation
intensity and the resulting effect on the process is of interest. Furthermore,
changing conditions like temperature and pressure result in varying acoustic properties
of the liquid. That might necessitate an adaption of the ultrasound irradiation.
To detect such changes during operation, process monitoring is desired. Labor
intensive processes, that might be carried out for several hours, also require
process monitoring to increase their reliability by detection of changes or malfunctions
during operation. In some applications cavitation detection and monitoring can
be achieved by the application of sensors in the sound field. Though the application
of sensors is possible, this necessitates modifications on the system and the
sensor might disturb the sound field. In other applications harsh, process conditions
prohibit the application of sensors in the sound field. Therefore alternative
techniques for cavitation detection and monitoring are desired. The applicability
of an external microphone and a self-sensing ultrasound transducer for cavitation
detection were experimentally investigated. Both methods were found to be suitable
and easily applicable.
author:
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: 'Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation
detection / monitoring in sonochemical reactors. In: Ultrasonics Symposium
(IUS), 2012 IEEE International. ; 2012:1141-1144. doi:10.1109/ULTSYM.2012.0284'
apa: Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., & Morita, T. (2012). Non-perturbing
cavitation detection / monitoring in sonochemical reactors. In Ultrasonics
Symposium (IUS), 2012 IEEE International (pp. 1141–1144). https://doi.org/10.1109/ULTSYM.2012.0284
bibtex: '@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing
cavitation detection / monitoring in sonochemical reactors}, DOI={10.1109/ULTSYM.2012.0284},
booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann,
Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi},
year={2012}, pages={1141–1144} }'
chicago: Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi
Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.”
In Ultrasonics Symposium (IUS), 2012 IEEE International, 1141–44, 2012.
https://doi.org/10.1109/ULTSYM.2012.0284.
ieee: P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing
cavitation detection / monitoring in sonochemical reactors,” in Ultrasonics
Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.
mla: Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in
Sonochemical Reactors.” Ultrasonics Symposium (IUS), 2012 IEEE International,
2012, pp. 1141–44, doi:10.1109/ULTSYM.2012.0284.
short: 'P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics
Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.'
date_created: 2019-05-13T13:18:49Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2012.0284
keyword:
- cavitation
- chemical reactors
- microphones
- process monitoring
- reliability
- ultrasonic applications
- ultrasonic waves
- acoustic properties
- cavitation based ultrasound applications
- cavitation intensity
- change detection reliability
- external microphone
- malfunction detection reliability
- nonperturbing cavitation detection
- nonperturbing cavitation monitoring
- process monitoring
- self-sensing ultrasound transducer
- sonochemical reactors
- sonochemistry
- ultrasound cleaning
- ultrasound irradiation
- Acoustics
- Liquids
- Monitoring
- Sensors
- Sonar equipment
- Transducers
- Ultrasonic imaging
language:
- iso: eng
page: 1141-1144
publication: Ultrasonics Symposium (IUS), 2012 IEEE International
publication_identifier:
issn:
- 1948-5719
quality_controlled: '1'
status: public
title: Non-perturbing cavitation detection / monitoring in sonochemical reactors
type: conference
user_id: '55222'
year: '2012'
...
---
_id: '36994'
abstract:
- lang: eng
text: This paper proposes a quality driven, simulation based approach to functional
design verification, which applies mainly to IP-level HDL designs with well specified
test instruction format and is evaluated on a soft microprocessor core MB-LITE
[5]. The approach utilizes mutation analysis as the quality metric to steer an
automated simulation data generation process. It leads to a simulation flow with
two phases towards an enhanced mutation analysis result. First in a random simulation
phase, an in-loop heuristics is deployed and adjusts dynamically the test probability
distribution so as to improve the coverage efficiency. Next, for each remaining
hard-to-kill mutant, a search heuristics on test input space is developed to iteratively
locate a target test, using a specific objective cost function for the goal of
killing HDL mutant. The effectiveness of this integrated two-phase simulation
flow is demonstrated by the results with the MB-LITE microprocessor IP.
author:
- first_name: 'Tao '
full_name: 'Xie, Tao '
last_name: Xie
- first_name: Wolfgang
full_name: Müller, Wolfgang
id: '16243'
last_name: Müller
- first_name: Florian
full_name: Letombe, Florian
last_name: Letombe
citation:
ama: 'Xie T, Müller W, Letombe F. Mutation-Analysis Driven Functional Verification
of a Soft Microprocessor. In: Proceedings of SOCC2012. IEEE; 2012. doi:10.1109/SOCC.2012.6398362'
apa: Xie, T., Müller, W., & Letombe, F. (2012). Mutation-Analysis Driven Functional
Verification of a Soft Microprocessor. Proceedings of SOCC2012. https://doi.org/10.1109/SOCC.2012.6398362
bibtex: '@inproceedings{Xie_Müller_Letombe_2012, place={ Niagara Falls, NY, USA
}, title={Mutation-Analysis Driven Functional Verification of a Soft Microprocessor},
DOI={10.1109/SOCC.2012.6398362},
booktitle={Proceedings of SOCC2012}, publisher={IEEE}, author={Xie, Tao and Müller,
Wolfgang and Letombe, Florian}, year={2012} }'
chicago: 'Xie, Tao , Wolfgang Müller, and Florian Letombe. “Mutation-Analysis Driven
Functional Verification of a Soft Microprocessor.” In Proceedings of SOCC2012. Niagara
Falls, NY, USA : IEEE, 2012. https://doi.org/10.1109/SOCC.2012.6398362.'
ieee: 'T. Xie, W. Müller, and F. Letombe, “Mutation-Analysis Driven Functional Verification
of a Soft Microprocessor,” 2012, doi: 10.1109/SOCC.2012.6398362.'
mla: Xie, Tao, et al. “Mutation-Analysis Driven Functional Verification of a Soft
Microprocessor.” Proceedings of SOCC2012, IEEE, 2012, doi:10.1109/SOCC.2012.6398362.
short: 'T. Xie, W. Müller, F. Letombe, in: Proceedings of SOCC2012, IEEE, Niagara
Falls, NY, USA , 2012.'
date_created: 2023-01-17T08:46:14Z
date_updated: 2023-01-17T08:46:29Z
department:
- _id: '672'
doi: 10.1109/SOCC.2012.6398362
keyword:
- Analytical models
- Hardware design languages
- Microprocessors
- Cost function
- Data models
- Search problems
- IP networks
language:
- iso: eng
place: ' Niagara Falls, NY, USA '
publication: Proceedings of SOCC2012
publication_identifier:
eisbn:
- 978-1-4673-1295-0
publisher: IEEE
status: public
title: Mutation-Analysis Driven Functional Verification of a Soft Microprocessor
type: conference
user_id: '5786'
year: '2012'
...
---
_id: '11845'
abstract:
- lang: eng
text: The paper proposes a modification of the standard maximum a posteriori (MAP)
method for the estimation of the parameters of a Gaussian process for cases where
the process is superposed by additive Gaussian observation errors of known variance.
Simulations on artificially generated data demonstrate the superiority of the
proposed method. While reducing to the ordinary MAP approach in the absence of
observation noise, the improvement becomes the more pronounced the larger the
variance of the observation noise. The method is further extended to track the
parameters in case of non-stationary Gaussian processes.
author:
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Krueger A, Haeb-Umbach R. MAP-based estimation of the parameters of non-stationary
Gaussian processes from noisy observations. In: IEEE International Conference
on Acoustics, Speech and Signal Processing (ICASSP 2011). ; 2011:3596-3599.
doi:10.1109/ICASSP.2011.5946256'
apa: Krueger, A., & Haeb-Umbach, R. (2011). MAP-based estimation of the parameters
of non-stationary Gaussian processes from noisy observations. In IEEE International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2011) (pp. 3596–3599).
https://doi.org/10.1109/ICASSP.2011.5946256
bibtex: '@inproceedings{Krueger_Haeb-Umbach_2011, title={MAP-based estimation of
the parameters of non-stationary Gaussian processes from noisy observations},
DOI={10.1109/ICASSP.2011.5946256},
booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2011)}, author={Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2011},
pages={3596–3599} }'
chicago: Krueger, Alexander, and Reinhold Haeb-Umbach. “MAP-Based Estimation of
the Parameters of Non-Stationary Gaussian Processes from Noisy Observations.”
In IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2011), 3596–99, 2011. https://doi.org/10.1109/ICASSP.2011.5946256.
ieee: A. Krueger and R. Haeb-Umbach, “MAP-based estimation of the parameters of
non-stationary Gaussian processes from noisy observations,” in IEEE International
Conference on Acoustics, Speech and Signal Processing (ICASSP 2011), 2011,
pp. 3596–3599.
mla: Krueger, Alexander, and Reinhold Haeb-Umbach. “MAP-Based Estimation of the
Parameters of Non-Stationary Gaussian Processes from Noisy Observations.” IEEE
International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011),
2011, pp. 3596–99, doi:10.1109/ICASSP.2011.5946256.
short: 'A. Krueger, R. Haeb-Umbach, in: IEEE International Conference on Acoustics,
Speech and Signal Processing (ICASSP 2011), 2011, pp. 3596–3599.'
date_created: 2019-07-12T05:29:22Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/ICASSP.2011.5946256
keyword:
- Gaussian processes
- MAP-based estimation
- maximum a posteriori method
- maximum likelihood estimation
- nonstationary Gaussian processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2011/KrHa11.pdf
oa: '1'
page: 3596-3599
publication: IEEE International Conference on Acoustics, Speech and Signal Processing
(ICASSP 2011)
status: public
title: MAP-based estimation of the parameters of non-stationary Gaussian processes
from noisy observations
type: conference
user_id: '44006'
year: '2011'
...
---
_id: '11850'
abstract:
- lang: eng
text: In this paper, we present a novel blocking matrix and fixed beamformer design
for a generalized sidelobe canceler for speech enhancement in a reverberant enclosure.
They are based on a new method for estimating the acoustical transfer function
ratios in the presence of stationary noise. The estimation method relies on solving
a generalized eigenvalue problem in each frequency bin. An adaptive eigenvector
tracking utilizing the power iteration method is employed and shown to achieve
a high convergence speed. Simulation results demonstrate that the proposed beamformer
leads to better noise and interference reduction and reduced speech distortions
compared to other blocking matrix designs from the literature.
author:
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- 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: Krueger A, Warsitz E, Haeb-Umbach R. Speech Enhancement With a GSC-Like Structure
Employing Eigenvector-Based Transfer Function Ratios Estimation. IEEE Transactions
on Audio, Speech, and Language Processing. 2011;19(1):206-219. doi:10.1109/TASL.2010.2047324
apa: Krueger, A., Warsitz, E., & Haeb-Umbach, R. (2011). Speech Enhancement
With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios
Estimation. IEEE Transactions on Audio, Speech, and Language Processing,
19(1), 206–219. https://doi.org/10.1109/TASL.2010.2047324
bibtex: '@article{Krueger_Warsitz_Haeb-Umbach_2011, title={Speech Enhancement With
a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios Estimation},
volume={19}, DOI={10.1109/TASL.2010.2047324},
number={1}, journal={IEEE Transactions on Audio, Speech, and Language Processing},
author={Krueger, Alexander and Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2011},
pages={206–219} }'
chicago: 'Krueger, Alexander, Ernst Warsitz, and Reinhold Haeb-Umbach. “Speech Enhancement
With a GSC-Like Structure Employing Eigenvector-Based Transfer Function Ratios
Estimation.” IEEE Transactions on Audio, Speech, and Language Processing
19, no. 1 (2011): 206–19. https://doi.org/10.1109/TASL.2010.2047324.'
ieee: A. Krueger, E. Warsitz, and R. Haeb-Umbach, “Speech Enhancement With a GSC-Like
Structure Employing Eigenvector-Based Transfer Function Ratios Estimation,” IEEE
Transactions on Audio, Speech, and Language Processing, vol. 19, no. 1, pp.
206–219, 2011.
mla: Krueger, Alexander, et al. “Speech Enhancement With a GSC-Like Structure Employing
Eigenvector-Based Transfer Function Ratios Estimation.” IEEE Transactions on
Audio, Speech, and Language Processing, vol. 19, no. 1, 2011, pp. 206–19,
doi:10.1109/TASL.2010.2047324.
short: A. Krueger, E. Warsitz, R. Haeb-Umbach, IEEE Transactions on Audio, Speech,
and Language Processing 19 (2011) 206–219.
date_created: 2019-07-12T05:29:28Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASL.2010.2047324
intvolume: ' 19'
issue: '1'
keyword:
- acoustical transfer function ratio
- adaptive eigenvector tracking
- array signal processing
- beamformer design
- blocking matrix
- eigenvalues and eigenfunctions
- eigenvector-based transfer function ratios estimation
- generalized sidelobe canceler
- interference reduction
- iterative methods
- power iteration method
- reduced speech distortions
- reverberant enclosure
- reverberation
- speech enhancement
- stationary noise
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2011/KrWaHa11.pdf
oa: '1'
page: 206-219
publication: IEEE Transactions on Audio, Speech, and Language Processing
status: public
title: Speech Enhancement With a GSC-Like Structure Employing Eigenvector-Based Transfer
Function Ratios Estimation
type: journal_article
user_id: '44006'
volume: 19
year: '2011'
...
---
_id: '37002'
abstract:
- lang: eng
text: HDL-mutation based fault injection and analysis is considered as an important
coverage metric for measuring the quality of design simulation processes [20,
3, 1, 2]. In this work, we try to solve the problem of automatic simulation data
generation targeting HDL mutation faults. We follow a search based approach and
eliminate the need for symbolic execution and mathematical constraint solving
from existing work. An objective cost function is defined on the test input space
and serves the guidance of search for fault-detecting test data. This is done
by first mapping the simulation traces under a test onto a control and data flow
graph structure which is extracted from the design. Then the progress of fault
detection can be measured quantitatively on this graph to be the cost value. By
minimizing this cost we approach the target test data. The effectiveness of the
cost function is investigated under an example neighborhood search scheme. Case
study with a floating point arithmetic IP design has shown that the cost function
is able to guide effectively the search procedure towards a fault-detecting test.
The cost calculation time as the search overhead was also observed to be minor
compared to the actual design simulation time.
author:
- first_name: Tao
full_name: Xie, Tao
last_name: Xie
- first_name: Wolfgang
full_name: Müller, Wolfgang
id: '16243'
last_name: Müller
- first_name: Florian
full_name: Letombe, Florian
last_name: Letombe
citation:
ama: 'Xie T, Müller W, Letombe F. HDL-Mutation Based Simulation Data Generation
by Propagation Guided Search. In: Proceedings of Euromicro DSD 2011. IEEE;
2011. doi:10.1109/DSD.2011.83'
apa: Xie, T., Müller, W., & Letombe, F. (2011). HDL-Mutation Based Simulation
Data Generation by Propagation Guided Search. Proceedings of Euromicro DSD
2011. https://doi.org/10.1109/DSD.2011.83
bibtex: '@inproceedings{Xie_Müller_Letombe_2011, place={Oulu, Finnland}, title={HDL-Mutation
Based Simulation Data Generation by Propagation Guided Search}, DOI={10.1109/DSD.2011.83},
booktitle={Proceedings of Euromicro DSD 2011}, publisher={IEEE}, author={Xie,
Tao and Müller, Wolfgang and Letombe, Florian}, year={2011} }'
chicago: 'Xie, Tao, Wolfgang Müller, and Florian Letombe. “HDL-Mutation Based Simulation
Data Generation by Propagation Guided Search.” In Proceedings of Euromicro
DSD 2011. Oulu, Finnland: IEEE, 2011. https://doi.org/10.1109/DSD.2011.83.'
ieee: 'T. Xie, W. Müller, and F. Letombe, “HDL-Mutation Based Simulation Data Generation
by Propagation Guided Search,” 2011, doi: 10.1109/DSD.2011.83.'
mla: Xie, Tao, et al. “HDL-Mutation Based Simulation Data Generation by Propagation
Guided Search.” Proceedings of Euromicro DSD 2011, IEEE, 2011, doi:10.1109/DSD.2011.83.
short: 'T. Xie, W. Müller, F. Letombe, in: Proceedings of Euromicro DSD 2011, IEEE,
Oulu, Finnland, 2011.'
date_created: 2023-01-17T09:02:48Z
date_updated: 2025-02-26T14:44:15Z
department:
- _id: '672'
doi: 10.1109/DSD.2011.83
keyword:
- Hardware design languages
- Cost function
- Computational modeling
- Fault detection
- Data models
- Analytical models
- Testing
language:
- iso: eng
place: Oulu, Finnland
publication: Proceedings of Euromicro DSD 2011
publication_identifier:
isbn:
- 978-1-4577-1048-3
publisher: IEEE
status: public
title: HDL-Mutation Based Simulation Data Generation by Propagation Guided Search
type: conference
user_id: '5786'
year: '2011'
...
---
_id: '11846'
abstract:
- lang: eng
text: In this paper, we present a new technique for automatic speech recognition
(ASR) in reverberant environments. Our approach is aimed at the enhancement of
the logarithmic Mel power spectrum, which is computed at an intermediate stage
to obtain the widely used Mel frequency cepstral coefficients (MFCCs). Given the
reverberant logarithmic Mel power spectral coefficients (LMPSCs), a minimum mean
square error estimate of the clean LMPSCs is computed by carrying out Bayesian
inference. We employ switching linear dynamical models as an a priori model for
the dynamics of the clean LMPSCs. Further, we derive a stochastic observation
model which relates the clean to the reverberant LMPSCs through a simplified model
of the room impulse response (RIR). This model requires only two parameters, namely
RIR energy and reverberation time, which can be estimated from the captured microphone
signal. The performance of the proposed enhancement technique is studied on the
AURORA5 database and compared to that of constrained maximum-likelihood linear
regression (CMLLR). It is shown by experimental results that our approach significantly
outperforms CMLLR and that up to 80\% of the errors caused by the reverberation
are recovered. In addition to the fact that the approach is compatible with the
standard MFCC feature vectors, it leaves the ASR back-end unchanged. It is of
moderate computational complexity and suitable for real time applications.
author:
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Krueger A, Haeb-Umbach R. Model-Based Feature Enhancement for Reverberant Speech
Recognition. IEEE Transactions on Audio, Speech, and Language Processing.
2010;18(7):1692-1707. doi:10.1109/TASL.2010.2049684
apa: Krueger, A., & Haeb-Umbach, R. (2010). Model-Based Feature Enhancement
for Reverberant Speech Recognition. IEEE Transactions on Audio, Speech, and
Language Processing, 18(7), 1692–1707. https://doi.org/10.1109/TASL.2010.2049684
bibtex: '@article{Krueger_Haeb-Umbach_2010, title={Model-Based Feature Enhancement
for Reverberant Speech Recognition}, volume={18}, DOI={10.1109/TASL.2010.2049684},
number={7}, journal={IEEE Transactions on Audio, Speech, and Language Processing},
author={Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2010}, pages={1692–1707}
}'
chicago: 'Krueger, Alexander, and Reinhold Haeb-Umbach. “Model-Based Feature Enhancement
for Reverberant Speech Recognition.” IEEE Transactions on Audio, Speech, and
Language Processing 18, no. 7 (2010): 1692–1707. https://doi.org/10.1109/TASL.2010.2049684.'
ieee: A. Krueger and R. Haeb-Umbach, “Model-Based Feature Enhancement for Reverberant
Speech Recognition,” IEEE Transactions on Audio, Speech, and Language Processing,
vol. 18, no. 7, pp. 1692–1707, 2010.
mla: Krueger, Alexander, and Reinhold Haeb-Umbach. “Model-Based Feature Enhancement
for Reverberant Speech Recognition.” IEEE Transactions on Audio, Speech, and
Language Processing, vol. 18, no. 7, 2010, pp. 1692–707, doi:10.1109/TASL.2010.2049684.
short: A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language
Processing 18 (2010) 1692–1707.
date_created: 2019-07-12T05:29:23Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
doi: 10.1109/TASL.2010.2049684
intvolume: ' 18'
issue: '7'
keyword:
- ASR
- AURORA5 database
- automatic speech recognition
- Bayesian inference
- belief networks
- CMLLR
- computational complexity
- constrained maximum likelihood linear regression
- least mean squares methods
- LMPSC computation
- logarithmic Mel power spectrum
- maximum likelihood estimation
- Mel frequency cepstral coefficients
- MFCC feature vectors
- microphone signal
- minimum mean square error estimation
- model-based feature enhancement
- regression analysis
- reverberant speech recognition
- reverberation
- RIR energy
- room impulse response
- speech recognition
- stochastic observation model
- stochastic processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2010/KrHa10.pdf
oa: '1'
page: 1692-1707
publication: IEEE Transactions on Audio, Speech, and Language Processing
status: public
title: Model-Based Feature Enhancement for Reverberant Speech Recognition
type: journal_article
user_id: '44006'
volume: 18
year: '2010'
...